Composite sheet for packaging, sleeve for packaging, container and method for manufacturing the same

Abstract

A packaging laminate, a packaging sleeve, a container and a method for manufacturing the same. The packaging laminate comprises a main fold line extending in a first direction, which divides the packaging laminate into a main body region and a peripheral region, and the main body region connects the peripheral region along a second direction intersecting the first direction. The peripheral region comprises a first folding pattern region comprising: a first fold line and a second fold line extending in the second direction and spaced apart from each other in the first direction; a first auxiliary fold line located on a side of the first fold line facing the second fold line and extending at least partially in the second direction; and a second auxiliary fold line located on a side of the second fold line facing away from the first fold line and extending at least partially in the second direction. In the first direction, a maximum distance between the first fold line and the first auxiliary fold line and a maximum distance between the second fold line and the second auxiliary fold line are each less than or equal to 20% of a distance between the first fold line and the second fold line.

Description

Technical Field

[0001] At least one embodiment of this disclosure relates to a composite sheet for packaging, a sleeve for packaging, a container, and a method for manufacturing the same. Background Technology

[0002] Currently, trade between countries and regions is very frequent, and packaging is usually required for goods to facilitate storage, transportation, and sale. For example, many foods need to be sealed in various forms of containers such as boxes and bags. Containers used for packaging goods are formed by cutting, folding, and sealing sheet-like composite materials. Therefore, the quality and structural characteristics of the composite materials directly determine whether the container's performance meets the user's requirements. Summary of the Invention

[0003] According to embodiments of this disclosure, a composite sheet for packaging is provided, including a main fold line extending along a first direction, wherein the main fold line divides the composite sheet into a main body region and a peripheral region, and the main body region connects to the peripheral region along a second direction intersecting the first direction. The peripheral region includes a first folded pattern area, the first folded pattern area comprising: a first fold line and a second fold line extending along the second direction and spaced apart from each other in the first direction; a first auxiliary fold line located on the side of the first fold line facing the second fold line and extending at least partially along the second direction; and a second auxiliary fold line located on the side of the second fold line away from the first fold line and extending at least partially along the second direction. Wherein, in the first direction, the maximum distance between the first fold line and the first auxiliary fold line, and the maximum distance between the second fold line and the second auxiliary fold line, are each less than or equal to 20% of the distance between the first fold line and the second fold line.

[0004] For example, in the second direction, the peripheral region has an edge away from the main region; the first auxiliary zigzag line includes an arc segment such that as the first auxiliary zigzag line extends from the edge of the peripheral region toward the main zigzag line, the distance between the first auxiliary zigzag line and the first zigzag line decreases; the second auxiliary zigzag line includes an arc segment such that as the second auxiliary zigzag line extends from the edge of the peripheral region toward the main zigzag line, the distance between the second auxiliary zigzag line and the second zigzag line decreases.

[0005] For example, the surrounding area includes a plurality of first folded pattern areas, which are spaced apart from each other in the first direction; in two adjacent first folded pattern areas, the arc segments of the first auxiliary fold line and the second auxiliary fold line of one first folded pattern area bend toward the negative direction of the first direction, while the arc segments of the first auxiliary fold line and the second auxiliary fold line of the other first folded pattern area bend toward the positive direction of the first direction.

[0006] For example, in two adjacent first folded pattern areas, the first auxiliary fold line and the second auxiliary fold line of one first folded pattern area are axially symmetrical with respect to the first auxiliary fold line and the second auxiliary fold line of the other first folded pattern area with respect to the axis of symmetry parallel to the second direction.

[0007] For example, the packaging composite sheet further includes a sealing area extending along the second direction and connecting to the main body area and the peripheral area in the first direction. The peripheral area further includes a second folded pattern area comprising: a third fold line and a fourth fold line extending along the second direction and spaced apart from each other in the first direction, wherein the fourth fold line is the boundary line between the sealing area and the peripheral area; and a third auxiliary fold line located on the side of the third fold line facing the fourth fold line and extending at least partially along the second direction. The peripheral area also includes a fourth auxiliary fold line located at the edge of the composite sheet opposite to the sealing area and extending at least partially along the second direction. In the first direction, the maximum distance between the third fold line and the third auxiliary fold line, and the maximum distance between the edge of the composite sheet opposite to the sealing area and the fourth auxiliary fold line, are each less than or equal to 20% of the distance between the third fold line and the fourth fold line.

[0008] For example, the third auxiliary fold line includes an arc segment such that the distance between the third auxiliary fold line and the main fold line decreases as the third auxiliary fold line extends from the edge of the peripheral area toward the main fold line; the fourth auxiliary fold line includes an arc segment such that the distance between the fourth auxiliary fold line and the edge of the composite sheet opposite to the sealing area decreases as the fourth auxiliary fold line extends from the edge of the peripheral area toward the main fold line; the arc segments of the first auxiliary fold line and the second auxiliary fold line bend in the negative direction of the first direction, and the arc segments of the third auxiliary fold line and the fourth auxiliary fold line bend in the positive direction of the first direction; or, the arc segments of the first auxiliary fold line and the second auxiliary fold line bend in the positive direction of the first direction, and the arc segments of the third auxiliary fold line and the fourth auxiliary fold line bend in the negative direction of the first direction.

[0009] For example, the first auxiliary polyline includes a straight line segment connected to the arc segment and extending along the second direction. The straight line segment is closer to the edge of the peripheral area than the arc segment. Both the straight line segment and the arc segment are spaced apart from the first polyline, and the arc segment is also spaced apart from the main polyline. The second auxiliary polyline includes a straight line segment connected to the arc segment and extending along the second direction. The straight line segment is closer to the edge of the peripheral area than the arc segment. Both the straight line segment and the arc segment are spaced apart from the second polyline, and the arc segment is also spaced apart from the main polyline. The third... The auxiliary zigzag line includes a straight line segment connected to the arc segment and extending along the second direction. The straight line segment is closer to the edge of the peripheral area than the arc segment. Both the straight line segment and the arc segment are spaced apart from the third zigzag line, and the arc segment is also spaced apart from the main zigzag line. The fourth auxiliary zigzag line includes a straight line segment connected to the arc segment and extending along the second direction. The straight line segment is closer to the edge of the peripheral area than the arc segment. Both the straight line segment and the arc segment are spaced apart from the edge of the composite sheet opposite to the sealing area. The arc segment is also spaced apart from the main zigzag line.

[0010] For example, the distances between the endpoint of the arc segment of the first auxiliary zigzag line away from the straight line segment and the first zigzag line, the distances between the endpoint of the arc segment of the second auxiliary zigzag line away from the straight line segment and the second zigzag line, the distances between the endpoint of the arc segment of the third auxiliary zigzag line away from the straight line segment and the third zigzag line, and the distances between the endpoint of the arc segment of the fourth auxiliary zigzag line away from the straight line segment and the edge of the packaging composite sheet opposite to the sealing area are all 0.5-3.0 mm; the distances between the endpoint of the arc segment of the first auxiliary zigzag line away from the straight line segment and the main zigzag line, the distances between the endpoint of the arc segment of the second auxiliary zigzag line away from the straight line segment and the main zigzag line, the distances between the endpoint of the arc segment of the third auxiliary zigzag line away from the straight line segment and the main zigzag line, and the distances between the endpoint of the arc segment of the fourth auxiliary zigzag line away from the straight line segment and the main zigzag line are all 0.5-24.5 mm. mm; the distance between the straight segment of the first auxiliary fold line and the first fold line, the distance between the straight segment of the second auxiliary fold line and the second fold line, the distance between the straight segment of the third auxiliary fold line and the third fold line, and the distance between the straight segment of the fourth auxiliary fold line and the edge of the packaging composite sheet opposite to the sealing area are 0.5-6.0 mm respectively.

[0011] For example, the distance between the endpoint of the arc segment of the first auxiliary zigzag line away from the straight line segment and the first zigzag line is equal to the distance between the endpoint of the arc segment of the third auxiliary zigzag line away from the straight line segment and the third zigzag line; and the distance between the endpoint of the arc segment of the second auxiliary zigzag line away from the straight line segment and the second zigzag line is equal to the distance between the endpoint of the arc segment of the fourth auxiliary zigzag line away from the straight line segment and the edge of the packaging composite sheet opposite to the sealing area; the distance between the endpoint of the arc segment of the first auxiliary zigzag line away from the straight line segment and the main zigzag line is equal to the distance between the arc segment of the third auxiliary zigzag line. The distance between the endpoint of the straight segment away from the main line and the main line, and the distance between the endpoint of the arc segment of the second auxiliary line away from the straight segment and the main line, are equal to the distance between the endpoint of the arc segment of the fourth auxiliary line away from the straight segment and the main line; the distance between the straight segment of the first auxiliary line and the first line, the distance between the straight segment of the second auxiliary line and the second line, the distance between the straight segment of the third auxiliary line and the third line, and the distance between the straight segment of the fourth auxiliary line and the edge of the packaging composite sheet opposite to the sealing area are all equal to each other.

[0012] For example, the first auxiliary fold line, the second auxiliary fold line, the third auxiliary fold line, and the fourth auxiliary fold line are pressure grooves; the depths of the first auxiliary fold line, the second auxiliary fold line, the third auxiliary fold line, and the fourth auxiliary fold line are 0.1-2.5 mm, respectively.

[0013] For example, the first auxiliary fold line, the second auxiliary fold line, the third auxiliary fold line, and the fourth auxiliary fold line are grooves; the depth of each of the first auxiliary fold line, the second auxiliary fold line, the third auxiliary fold line, and the fourth auxiliary fold line becomes shallower from the edge of the peripheral area toward the main fold line.

[0014] For example, the first folded pattern area further includes a first sub-auxiliary fold line and a second sub-auxiliary fold line, extending along the second direction and located between the first fold line and the second fold line in the first direction, wherein, in the first direction, the maximum distance between the first fold line and the first sub-auxiliary fold line and the maximum distance between the second fold line and the second sub-auxiliary fold line are respectively less than or equal to 20% of the distance between the first fold line and the second fold line; the second folded pattern area further includes a third sub-auxiliary fold line and a fourth sub-auxiliary fold line, extending along the second direction and located between the third fold line and the fourth fold line in the first direction, wherein, in the first direction, the maximum distance between the third fold line and the third sub-auxiliary fold line and the maximum distance between the fourth fold line and the fourth sub-auxiliary fold line are respectively less than or equal to 20% of the distance between the first fold line and the second fold line.

[0015] For example, the first auxiliary line may partially overlap with or be spaced apart from the first sub-auxiliary line; the third auxiliary line may partially overlap with or be spaced apart from the third sub-auxiliary line.

[0016] For example, the first folded pattern area further includes a first inclined fold line and a second inclined fold line, the intersection of the first fold line and the main fold line is connected to the first inclined fold line or its extension, and the intersection of the second fold line and the main fold line is connected to the second inclined fold line or its extension; the second folded pattern area further includes a third inclined fold line and a fourth inclined fold line, the intersection of the third fold line and the main fold line is connected to the third inclined fold line or its extension, and the intersection of the fourth fold line and the main fold line is connected to the fourth inclined fold line or its extension; in the first direction, the first auxiliary fold line and the first sub-auxiliary fold line are located between the first fold line and the first inclined fold line, the second sub-auxiliary fold line is located between the second fold line and the second inclined fold line, and the third auxiliary fold line and the third sub-auxiliary fold line are located between the first fold line and the first inclined fold line. Between the third fold line and the third inclined fold line, the fourth sub-auxiliary fold line is located between the fourth fold line and the fourth inclined fold line; in the second direction, the first auxiliary fold line is spaced apart from the first inclined fold line, the first sub-auxiliary fold line does not exceed the first inclined fold line, the second auxiliary fold line is spaced apart from the second inclined fold line, the second sub-auxiliary fold line does not exceed the second inclined fold line, the third auxiliary fold line is spaced apart from the third inclined fold line, the third sub-auxiliary fold line does not exceed the third inclined fold line, and the fourth sub-auxiliary fold line does not exceed the fourth inclined fold line; after the composite sheet is connected into a sleeve through the sealing area, the fourth fold line coincides with the edge of the composite sheet opposite to the sealing area, and in the second direction, the fourth auxiliary fold line is spaced apart from the fourth inclined fold line.

[0017] For example, the composite sheet for packaging includes two main fold lines that divide the composite sheet into a main body region and two peripheral regions; along the second direction, the main body region is connected between the two peripheral regions; each of the two peripheral regions includes either the first folded pattern area or both the first folded pattern area and the second folded pattern area.

[0018] According to embodiments of this disclosure, a packaging sleeve is provided, comprising the packaging composite sheet as described above.

[0019] According to embodiments of this disclosure, a container is provided, comprising the packaging composite sheet as described above.

[0020] According to embodiments of this disclosure, a container is provided, including a container body and a first flap connected to the container body, wherein the container body includes a first container surface surrounded by a main container fold line, and the first flap has a first flap surface connected to the first container surface; the container further has a sealing ridge for sealing the container, the sealing ridge being disposed along a third direction on the first container surface and the first flap surface, dividing the first container surface into a first container sub-surface and a second container sub-surface, and dividing the first flap surface into a first flap sub-surface and a second flap surface; in a fourth direction intersecting the third direction, the sealing ridge is configured to bend toward the first container sub-surface and the first flap surface; in the third direction, the first flap surface is connected to the first container sub-surface and extends along the fourth direction. A first container fold line serves as the boundary line between them. The second wing surface connects to the second container sub-surface and is bounded by a second container fold line extending along a fourth direction. The endpoint of the first container fold line away from the sealing ridge is the first endpoint, and the endpoint of the second container fold line away from the sealing ridge is the second endpoint. The first wing surface has a first auxiliary container fold line extending at least partially along the fourth direction. The second container sub-surface has a second auxiliary container fold line extending at least partially along the fourth direction. Furthermore, in the third direction, the maximum distance between the first container fold line and the first auxiliary container fold line, and the maximum distance between the second container fold line and the second auxiliary container fold line, are each less than or equal to 20% of the length of the portion of the main container fold line located between the first endpoint and the second endpoint.

[0021] For example, the first container auxiliary fold line includes an arc segment such that the distance between the first container auxiliary fold line and the first container fold line decreases as the first container auxiliary fold line extends from the free end of the sealing ridge toward the first endpoint; and the second container auxiliary fold line includes an arc segment such that the distance between the second container auxiliary fold line and the second container fold line decreases as the second container auxiliary fold line extends from the free end of the sealing ridge toward the second endpoint.

[0022] For example, the second wing has a second wing surface connected to the surface of the first container; the sealing ridge is also disposed on the second wing surface along a third direction, dividing the second wing surface into a third wing sub-surface and a fourth wing sub-surface; in the third direction, the third wing surface is connected to the first container sub-surface and the third container fold line serves as the boundary line between them, the fourth wing surface is connected to the second container sub-surface and the fourth container fold line serves as the boundary line between them, the endpoint of the third container fold line away from the sealing ridge is the third endpoint, and the endpoint of the fourth container fold line away from the sealing ridge is the fourth endpoint; the third wing surface has a third container auxiliary fold line, extending at least partially along the fourth direction; the second container sub-surface has a fourth container auxiliary fold line, extending at least partially along the fourth direction; and in the third direction, the maximum distance between the third container fold line and the third container auxiliary fold line and the maximum distance between the fourth container fold line and the fourth container auxiliary fold line are respectively less than or equal to 20% of the length of the portion of the main container fold line located between the third endpoint and the fourth endpoint.

[0023] For example, the third container auxiliary fold line includes an arc segment such that the distance between the third container auxiliary fold line and the third container fold line decreases as the third container auxiliary fold line extends from the free end of the sealing ridge toward the third endpoint; and the fourth container auxiliary fold line includes an arc segment such that the distance between the fourth container auxiliary fold line and the fourth container fold line decreases as the fourth container auxiliary fold line extends from the free end of the sealing ridge toward the fourth endpoint.

[0024] For example, the first container auxiliary zigzag line includes a straight line segment connected to the arc segment and extending along the fourth direction. The straight line segment is closer to the sealing ridge than the arc segment. Both the straight line segment and the arc segment are spaced apart from the first container zigzag line, and the arc segment is also spaced apart from the first endpoint. The second container auxiliary zigzag line includes a straight line segment connected to the arc segment and extending along the fourth direction. The straight line segment is closer to the sealing ridge than the arc segment. Both the straight line segment and the arc segment are spaced apart from the second container zigzag line, and the arc segment is also spaced apart from the second endpoint. The third container auxiliary zigzag line includes a straight line segment connected to the arc segment and extending along the fourth direction. The straight line segment is closer to the sealing ridge than the arc segment. Both the straight line segment and the arc segment are spaced apart from the third container zigzag line, and the arc segment is also spaced apart from the third endpoint. The fourth container auxiliary zigzag line includes a straight line segment connected to the arc segment and extending along the fourth direction. The straight line segment is closer to the sealing ridge than the arc segment. Both the straight line segment and the arc segment are spaced apart from the fourth container zigzag line, and the arc segment is also spaced apart from the third endpoint.

[0025] For example, the distances between the endpoint of the arc segment of the first auxiliary container line away from the straight line segment and the first container line, the distances between the endpoint of the arc segment of the second auxiliary container line away from the straight line segment and the second container line, the distances between the endpoint of the arc segment of the third auxiliary container line away from the straight line segment and the third container line, and the distances between the endpoint of the arc segment of the fourth auxiliary container line away from the straight line segment and the fourth container line are all 0.5-3.0 mm; the distances between the endpoint of the arc segment of the first auxiliary container line away from the straight line segment and the first endpoint, the distances between the endpoint of the arc segment of the second auxiliary container line away from the straight line segment and the second endpoint, the distances between the endpoint of the arc segment of the third auxiliary container line away from the straight line segment and the third endpoint, and the distances between the endpoint of the arc segment of the fourth auxiliary container line away from the straight line segment and the fourth endpoint are all 0.5-24.5 mm. mm; the distances between the straight segment of the first container auxiliary fold line and the first container fold line, the distances between the straight segment of the second container auxiliary fold line and the second container fold line, the distances between the straight segment of the third container auxiliary fold line and the third container fold line, and the distances between the straight segment of the fourth container auxiliary fold line and the edge of the packaging composite sheet opposite to the sealing area are 0.5-6.0 mm respectively.

[0026] For example, the distance between the endpoint of the arc segment of the first container auxiliary zigzag line away from the straight line segment and the first container zigzag line is equal to the distance between the endpoint of the arc segment of the third container auxiliary zigzag line away from the straight line segment and the third container zigzag line; the distance between the endpoint of the arc segment of the second container auxiliary zigzag line away from the straight line segment and the second container zigzag line is equal to the distance between the endpoint of the arc segment of the fourth container auxiliary zigzag line away from the straight line segment and the fourth container zigzag line; the distance between the endpoint of the arc segment of the first container auxiliary zigzag line away from the straight line segment and the first endpoint is equal to the distance between the endpoint of the arc segment of the third container auxiliary zigzag line. The distance between the endpoint of the line segment furthest from the straight line and the second endpoint, and the distance between the endpoint of the arc segment of the second container auxiliary polyline furthest from the straight line and the third endpoint, are equal to the distance between the endpoint of the arc segment of the fourth container auxiliary polyline furthest from the straight line and the fourth endpoint; the distances between the straight segments of the first container auxiliary polyline and the first container polyline, the distances between the straight segments of the second container auxiliary polyline and the second container polyline, the distances between the straight segments of the third container auxiliary polyline and the third container polyline, and the distances between the straight segments of the fourth container auxiliary polyline and the fourth container polyline are all equal.

[0027] For example, the first container auxiliary fold line, the second container auxiliary fold line, the third container auxiliary fold line, and the fourth container auxiliary fold line are pressure grooves; the depths of the first container auxiliary fold line, the second container auxiliary fold line, the third container auxiliary fold line, and the fourth container auxiliary fold line are 0.1-2.5 mm, respectively.

[0028] For example, the first container auxiliary fold line, the second container auxiliary fold line, the third container auxiliary fold line, and the fourth container auxiliary fold line are pressure grooves; the depth of the first container auxiliary fold line decreases from the sealing ridge towards the first end point, the depth of the second container auxiliary fold line decreases from the sealing ridge towards the second end point, the depth of the third container auxiliary fold line decreases from the sealing ridge towards the third end point, and the depth of the fourth container auxiliary fold line decreases from the sealing ridge towards the fourth end point.

[0029] For example, the first ear flap has a first wing auxiliary fold line extending along the fourth direction from the second wing surface via the sealing ridge bending towards the first wing surface to the first wing surface, and in the third direction, the distance between the first wing auxiliary fold line and the first container fold line and / or the second container fold line is less than or equal to 20% of the distance between the first endpoint and the second endpoint of the main container fold line; the second ear flap has a second wing auxiliary fold line extending along the fourth direction from the fourth wing surface via the sealing ridge bending towards the third wing surface to the third wing surface, and in the third direction, the distance between the second wing auxiliary fold line and the third container fold line and / or the fourth container fold line is less than or equal to 20% of the distance between the third endpoint and the fourth endpoint of the main container fold line.

[0030] For example, the distances between the first wing auxiliary line and the first container line, the distances between the first wing auxiliary line and the second container line, the distances between the second wing auxiliary line and the third container line, and the distances between the second wing auxiliary line and the fourth container line are all equal.

[0031] For example, the first container auxiliary fold line partially overlaps with or is spaced apart from the first wing auxiliary fold line; the third container auxiliary fold line partially overlaps with or is spaced apart from the second wing auxiliary fold line.

[0032] For example, the first wing auxiliary line and the second wing auxiliary line are pressure grooves; the radius of curvature of each of the first wing auxiliary line and the second wing auxiliary line is 0.2-2.5 mm.

[0033] For example, the first wing auxiliary fold line and the second wing auxiliary fold line are grooves; the depth of each of the first wing auxiliary fold line and the second wing auxiliary fold line is 0.1-2.5 mm.

[0034] For example, the first ear wing has a third wing auxiliary fold line, located on the back side of the first ear wing opposite to the surface of the first wing and corresponding to the first wing auxiliary fold line; the second ear wing has a fourth wing auxiliary fold line, located on the back side of the second ear wing opposite to the surface of the second wing and corresponding to the second wing auxiliary fold line.

[0035] According to embodiments of this disclosure, a method for manufacturing a container as described above is also provided, comprising: forming a first wing auxiliary fold line on a first ear flap, wherein the first wing auxiliary fold line extends along the fourth direction from the surface of a second wing through the sealing ridge bending toward the surface of the first wing to the surface of the first wing, and in the third direction, the distance between the first wing auxiliary fold line and the first container fold line and / or the second container fold line is less than or equal to 20% of the distance between the first endpoint and the second endpoint of the main container fold line; forming a second wing auxiliary fold line on the second ear flap, wherein the second wing auxiliary fold line extends along the fourth direction from the surface of a fourth wing through the sealing ridge bending toward the surface of a third wing to the surface of the third wing, and in the third direction, the distance between the second wing auxiliary fold line and the third container fold line and / or the fourth container fold line is less than or equal to 20% of the distance between the third endpoint and the fourth endpoint of the main container fold line.

[0036] For example, after forming the first wing auxiliary fold line and the second wing auxiliary fold line, the method further includes: heating a first position and a second position, the first position being located at the intersection of the first container sub-surface, the first wing surface, and the sealing ridge, and the second position being located at the intersection of the first container sub-surface, the third wing surface, and the sealing ridge; bending the sealing ridge to attach it to the first container surface; and bending the first wing and the second wing to attach them to the first container surface.

[0037] For example, the first and second positions are heated to a temperature of 150ºC-210ºC. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0039] Figures 1A to 1C A schematic diagram of part of the process of forming a container using composite sheets is shown.

[0040] Figure 1D yes Figures 1A to 1C A schematic diagram showing the location of defects in the container formed during the process.

[0041] Figure 2 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure;

[0042] Figure 3A yes Figure 2 A magnified schematic diagram of the first fold pattern area of ​​the composite sheet for packaging shown in Figure 1;

[0043] Figure 3B yes Figure 2 Enlarged view of the first fold pattern area of ​​the composite sheet for packaging shown. Figure 2 ;

[0044] Figure 4 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure. Figure 2 ;

[0045] Figure 5 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure;

[0046] Figure 6 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure. Figure 4 ;

[0047] Figure 7 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure. Figure 5 ;

[0048] Figure 8 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure. Figure 6 ;

[0049] Figure 9 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure. Figure 7 ;

[0050] Figure 10 This is a schematic diagram of a packaging sleeve according to an embodiment of the present disclosure;

[0051] Figure 11A This is a schematic diagram of a container according to an embodiment of the present disclosure;

[0052] Figure 11B yes Figure 11A A schematic diagram of the first container surface of the container shown;

[0053] Figure 12A This is a schematic diagram of a container according to an embodiment of the present disclosure. Figure 2 ;

[0054] Figure 12B yes Figure 12A A schematic diagram of the first container surface of the container shown;

[0055] Figure 13 This is a schematic diagram of the container according to an embodiment of the present disclosure before the first and second ear flaps are bent;

[0056] Figure 14 This is a schematic diagram of the container according to an embodiment of the present disclosure before the first and second ear flaps are bent. Figure 2;as well as

[0057] Figure 15 This is a schematic diagram of a container according to an embodiment of the present disclosure where the sealing ridge is not attached to the surface of the first container. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the described embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0059] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “inner,” “outer,” “upper,” and “lower” are used only to indicate relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0060] The accompanying drawings in this disclosure are not drawn to scale, and the specific dimensions and quantity of each structure can be determined according to actual needs. The drawings described in this disclosure are only structural schematic diagrams.

[0061] In addition to traditional containers such as glass bottles and metal cans, a new type of container is now widely used, which is formed by cutting, folding and sealing sheet-like composite materials. The composite material includes multiple layers stacked together, such as a carrier layer, a sealing layer stacked on the carrier layer, and a barrier layer, etc. Figures 1A to 1C A schematic diagram of part of the process of forming a container using composite sheets is shown. The process of forming a container using composite sheets is roughly as follows: (1) In Figure 1A Previously, the composite sheet was folded, longitudinally sealed, and end-sealed to form the container body 1, the lugs 2, and the sealing ridge 3. The container body 1 contains, for example, contents such as food. (2) See Figure 1A The sealing ridge 3 is bent to adhere to the end surface of the container body 1 (e.g., the end surface is the top or bottom surface of the container body 1); (3) See Figure 1B (4) Bend the ear flap 2 at a 90-degree angle for the first time; Figure 1C The ear flap 2 is then bent a second time at a 90-degree angle. Through the first and second 90-degree bends, the ear flap 2 is attached to the end surface of the main body 1, thus completing the container manufacturing process. Because the sealing ridge 3 needs to be bent and attached to the surface of the main body 1, and the ear flap 2 needs to be bent twice at 90 degrees (i.e., a total of 180-degree bends) to also attach it to the end surface of the main body 1, local areas of the composite sheet forming the container will undergo multiple bending processes, leading to stress concentration. This stress concentration will cause the local area of ​​the container to become thinner, the structural strength to weaken, and even tear. Ultimately, this will cause the air permeability and water permeability of the container to increase undesirably, leading to the deterioration and spoilage of the contents contained in the container. In severe cases, it may even lead to leakage of the contents contained in the container. These phenomena are undesirable for both container manufacturers and users. Figure 1D yes Figures 1A to 1C A schematic diagram showing the location of defects in the container formed during the process. The inventors of this disclosure discovered that, in situations such as... Figure 1D At positions P1 and P2, as shown, the container is highly susceptible to thinning, weakening of structural strength, or even tearing due to stress concentration as described above.

[0062] The embodiments of this disclosure provide a composite sheet for packaging, a sleeve for packaging, a packaging container, and a method for manufacturing the same. These methods can alleviate or even eliminate stress concentration as described above during the process of forming a container using the composite sheet, thereby avoiding a series of problems caused by stress concentration, such as thinning of local areas of the container, weakening of structural strength or tearing, which in turn leads to increased air permeability and water permeability of the container and leakage of the contents contained in the container.

[0063] Figure 2 This is a schematic plan view of a composite sheet for packaging according to an embodiment of the present disclosure. Figure 3A yes Figure 2 A magnified schematic diagram of the first fold pattern area of ​​the composite sheet used for packaging. See also... Figure 2 and Figure 3AAccording to an embodiment of the present disclosure, the composite sheet for packaging includes a main fold line 100 extending along a first direction D1; the main fold line 100 divides the composite sheet into a main body region 200 and a peripheral region 300, and the main body region 200 connects to the peripheral region 300 along a second direction D2 intersecting the first direction D1. The surrounding area 300 includes a first folded pattern area 310, which includes: a first fold line 101 and a second fold line 102, extending along a second direction D2 and spaced apart from each other in a first direction D1; a first auxiliary fold line 101A, located on the side of the first fold line 101 facing the second fold line 102, and extending at least partially along the second direction D2; and a second auxiliary fold line 102A, located on the side of the second fold line 102 away from the first fold line 101, and extending at least partially along the second direction D2; wherein, in the first direction D1, the maximum distance between the first fold line 101 and the first auxiliary fold line 101A and the maximum distance between the second fold line 102 and the second auxiliary fold line 102A are respectively less than or equal to 20% of the distance between the first fold line 101 and the second fold line 102. For example, the first fold line 101 and the second fold line 102 are used in the process of forming a container from a composite sheet to bend and attach the container's flaps (e.g., the first flaps described later) towards the end surface of the container (e.g., the bottom or top surface of the container). According to embodiments of this disclosure, a first auxiliary fold line 101A is provided at a suitable position for the first fold line 101 and a second auxiliary fold line 102A is provided at a suitable position for the second fold line 102. In this way, when the composite sheet is bent along the first fold line 101 and the second fold line 102 during the container formation process, the first auxiliary fold line 101A and the second auxiliary fold line 102A can provide a buffering effect, reducing or even avoiding stress concentration. This avoids a series of problems caused by stress concentration, such as thinning of local areas of the container, weakening of structural strength or tearing, which in turn leads to increased air permeability and water permeability of the container and leakage of the contents contained in the container. In particular, by setting a first auxiliary line 101A at an appropriate position for the first line 101 and a second auxiliary line 102A at an appropriate position for the second line 102, it is possible to reduce or even avoid [the occurrence of problems]. Figure 1D Stress concentration occurs at either position P1 or position P2.

[0064] See Figure 3AThe maximum distance between the first broken line 101 and the first auxiliary broken line 101A in the first direction D1 is denoted by d1, the maximum distance between the second broken line 102 and the second auxiliary broken line 102A in the first direction D1 is denoted by d1', and the distance between the first broken line 101 and the second broken line 102 in the first direction D1 is denoted by d2. As described above, according to embodiments of the present disclosure, each of d1 and d1' is less than or equal to 20% of d2. For example, further, each of d1 and d1' is 0.5%-12% of d2, so that the first auxiliary broken line 101A and the second auxiliary broken line 102A can provide a better buffering effect.

[0065] It should be noted that, in the first direction D1, the maximum distance d1 between the first broken line 101 and the first auxiliary broken line 101A, and the maximum distance d1' between the second broken line 102 and the second auxiliary broken line 102A can be equal to or unequal to each other, as long as each of them is less than or equal to 20% of the distance d2 between the first broken line 101 and the second broken line 102. For example, the maximum distance d1 between the first broken line 101 and the first auxiliary broken line 101A, and the maximum distance d1' between the second broken line 102 and the second auxiliary broken line 102A can be equal to each other, so that the first auxiliary broken line 101A and the second auxiliary broken line 102A can provide a uniform buffering effect.

[0066] See also Figure 2 and Figure 3A For example, in the first direction D1, the maximum distance between the first broken line 101 and the first auxiliary broken line 101A and the maximum distance between the second broken line 102 and the second auxiliary broken line 102A are respectively less than or equal to 20% of the distance between the first broken line 101 and the second broken line 102; furthermore, the first auxiliary broken line 101A and the first broken line 101 are spaced apart from each other (i.e., they have no intersection point), and the second auxiliary broken line 102A and the second broken line 102 are spaced apart from each other (i.e., they have no intersection point). For example, the first auxiliary fold line 101A and the first fold line 101, as well as the second auxiliary fold line 102A and the second fold line 102, are all grooves formed by applying pressure to the composite sheet. By separating the first auxiliary fold line 101A from the first fold line 101 and separating the second auxiliary fold line 102A from the second fold line 102, in addition to better buffering effect, it is also possible to avoid applying pressure to the same area of ​​the composite sheet multiple times, which would adversely affect its structural stability and structural strength.

[0067] See also Figure 2 and Figure 3AFor example, in a packaging composite sheet according to an embodiment of the present disclosure, in the second direction D2, the peripheral region 300 has an edge 330 away from the main region 200; the first auxiliary fold line 101A includes an arc segment AS such that as the first auxiliary fold line 101A extends from the edge 330 of the peripheral region 300 toward the main fold line 100, the distance between the first auxiliary fold line 101A and the first fold line 101 decreases; the second auxiliary fold line 102A includes an arc segment AS such that as the second auxiliary fold line 102A extends from the edge 330 of the peripheral region 300 toward the main fold line 100, the distance between the second auxiliary fold line 102A and the second fold line 102 decreases. In this way, the first auxiliary fold line 101A and the second auxiliary fold line 102A can provide better cushioning, reducing or even avoiding stress concentration.

[0068] See also Figure 2 and Figure 3A For example, the bending direction of the arc segment AS of the first auxiliary broken line 101A is the same as the bending direction of the arc segment AS of the second auxiliary broken line 102A; as an example, the figure shows that the arc segment AS of the first auxiliary broken line 101A and the arc segment AS of the second auxiliary broken line 102A both bend in the negative direction of the first direction.

[0069] See also Figure 2 and Figure 3A For example, the first auxiliary line 101A and the second auxiliary line 102A are both located between the edge 330 of the peripheral area and the main line 100 in the second direction D2; that is, the first auxiliary line 101A and the second auxiliary line 102A do not extend beyond the main line 100 in the second direction D2, and the first auxiliary line 101A and the second auxiliary line 102A are only located in the peripheral area 300 and do not enter the main area 200.

[0070] See Figure 2 and Figure 3A For example, the first fold line 101 and the second fold line 102 will continue to extend beyond the main fold line 100 and enter the main body region 200; further, the first fold line 101 and the second fold line 102 extend from the edge 330 of the peripheral region 300 along the second direction D2 to the edge of the composite sheet that is opposite to the edge 330.

[0071] See also Figure 2For example, the peripheral area 300 includes a plurality of first folded pattern areas 310, which are spaced apart from each other in the first direction D1; in two adjacent first folded pattern areas 310, the arc segment AS of the first auxiliary fold line 101A and the arc segment AS of the second auxiliary fold line 102A of one first folded pattern area 310 bends toward the negative direction of the first direction D1, while the arc segment AS of the first auxiliary fold line 101A and the arc segment AS of the second auxiliary fold line 102A of the other first folded pattern area 310 bends toward the positive direction of the first direction D1; that is, the arc segment AS of the first two bends in the same direction, and the arc segment AS of the latter two bends in the same direction, but the arc segment AS of the first two bends is opposite to the arc segment AS of the latter two. For example, in two adjacent first folding pattern areas 310, one first folding pattern area 310 is used to bend and attach the first lug of the container to the end surface of the container during the process of forming the container from the composite sheet, while the other first folding pattern area 310 is used to bend and attach the second lug of the container to the end surface of the container during the process of forming the container from the composite sheet, with the first lug and the second lug being arranged opposite to each other. By arranging the two adjacent first folding pattern areas 310 as described above, it is possible to provide a good cushioning effect during the bending of each lug of the container, corresponding to the first auxiliary fold line 101A and the second auxiliary fold line 102A of each lug, reducing or even avoiding stress concentration. Thus, it is possible to reduce or even avoid stress concentration during the bending of each lug of the container. Figure 1D Stress concentrations occur at both positions P1 and P2.

[0072] See also Figure 2 For example, according to an embodiment of this disclosure, in two adjacent first folded pattern areas 310, the first auxiliary fold line 101A and the second auxiliary fold line 102A of one first folded pattern area 310 are axially symmetrical with respect to an axis of symmetry parallel to the second direction D2. In this way, in addition to providing better cushioning for each ear flap, the first auxiliary fold line 101A and the second auxiliary fold line 102A can also better ensure the structural symmetry of the container, thereby contributing to the structural stability and aesthetics of the container.

[0073] It should be noted that "two adjacent first fold pattern areas 310" means that there are no more first fold pattern areas 310 between the two first fold pattern areas 310, but it does not exclude that there are other patterns or other pattern areas between the two first fold pattern areas 310 that are different from the first fold pattern areas 310.

[0074] Figure 4 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure. Figure 2 , Figure 5 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure. For example, see [link to diagram]. Figure 4 and Figure 5 The packaging composite sheet according to embodiments of this disclosure also includes a sealing area SS. The composite sheet is folded in half so that its two opposite edges overlap, and then the overlapping edges are joined by the sealing area SS to connect the composite sheet into a sleeve; this sleeve-forming process is also called longitudinal sealing. For example, the sealing area SS extends along a second direction D2 and connects to the main body region 200 and the peripheral region 300 in a first direction D1. For example, the peripheral region 300 also includes a second folded pattern area 320, which includes: a third fold line 103 and a fourth fold line 104, extending along the second direction D2 and spaced apart from each other in the first direction D1, wherein the fourth fold line 104 is the boundary line between the sealing area SS and the peripheral region 300; and a third auxiliary fold line 103A, located on the side of the third fold line 103 facing the fourth fold line 104, and extending at least partially along the second direction D2. For example, the surrounding area 300 also includes a fourth auxiliary fold line 104A, located at the edge EE of the composite sheet opposite to the sealing area SS, and extending at least partially along the second direction D2; in the first direction D1, the maximum distance between the third fold line 103 and the third auxiliary fold line 103A, and the maximum distance between the edge EE of the composite sheet opposite to the sealing area SS and the fourth auxiliary fold line 104A, are respectively less than or equal to 20% of the distance between the third fold line 103 and the fourth fold line 104A. For example, for Figure 2 The composite sheet shown may have a sealing area (not shown) at at least one of the two edges of the composite sheet parallel to the second direction D2 for sealing the composite sheet into a sleeve; Figure 2 Neither the first broken line 101 nor the second broken line 102 shall be used as the boundary line between the sealed area and the surrounding area 300. Figure 4 and Figure 5 and Figure 2 The difference between them is: Figure 4 and Figure 5 In the middle, a broken line in the surrounding area 300 (i.e., the fourth broken line 104) is used as the boundary line between the sealing area and the surrounding area 300, thereby making Figure 4 and Figure 5In addition to setting the first folded pattern area 310, a second folded pattern area 320 is also required, and a fourth auxiliary fold line 104A is set on the edge EE of the composite sheet opposite to the sealing area SS. For example, after the composite sheet is connected into a sleeve through the sealing area SS, the fourth fold line 104 coincides with the edge EE of the composite sheet opposite to the sealing area SS. For example, the first fold line 101 and the second fold line 102 are used to bend and attach the first lug of the container to the end surface of the container (e.g., the end surface of the container is the bottom surface or the top surface of the container) during the process of forming a container using the composite sheet; the third fold line 103 and the fourth fold line 104 are used to bend and attach the second lug of the container to the end surface of the container during the process of forming a container using the composite sheet, the second lug being disposed opposite to the first lug. According to embodiments of this disclosure, a first auxiliary fold line 101A is provided at an appropriate position for the first fold line 101, a second auxiliary fold line 102A is provided at an appropriate position for the second fold line 102, a third auxiliary fold line 103A is provided at an appropriate position for the third fold line 103, and a fourth auxiliary fold line 104A is provided at an appropriate position for the fourth fold line 104. Thus, when the composite sheet is bent along the first fold line 101 and the second fold line 102 during the container formation process, the first auxiliary fold line 101A and the second auxiliary fold line 102A can provide a buffering effect. When the composite sheet is bent along the third fold line 103 and the fourth auxiliary fold line 104A, the third auxiliary fold line 103A and the fourth auxiliary fold line 104A can provide a buffering effect, reducing or even avoiding stress concentration. This avoids a series of problems caused by stress concentration, such as thinning of the container's local area, weakening of structural strength, or tearing, leading to increased air permeability and water permeability of the container, and leakage of the contents contained within the container. More specifically, by setting a first auxiliary line 101A at an appropriate position for the first line 101, a second auxiliary line 102A at an appropriate position for the second line 102, a third auxiliary line 103A at an appropriate position for the third line 103, and a fourth auxiliary line 104A at an appropriate position for the fourth line 104, it is possible to reduce or even avoid [the occurrence of certain issues]. Figure 1D Stress concentrations occur at both positions P1 and P2.

[0075] For example, the maximum distance between the third fold line 103 and the third auxiliary fold line 103A, and the maximum distance between the edge EE of the composite sheet opposite to the sealing area SS and the fourth auxiliary fold line 104A are 0.5%-12% of the distance between the third fold line 103 and the fourth fold line 104, so that the third auxiliary fold line 103A and the second auxiliary fold line 104A can provide better cushioning effect.

[0076] It should be noted that, in the first direction D1, the maximum distance between the third fold line 103 and the third auxiliary fold line 103A, and the maximum distance between the edge EE of the composite sheet opposite to the sealing area SS and the fourth auxiliary fold line 104A, can be equal or unequal, as long as each is less than or equal to 20% of the distance d2 between the third fold line 103 and the fourth fold line 104A. For example, the maximum distance between the third fold line 103 and the third auxiliary fold line 103A, and the maximum distance between the edge EE of the composite sheet opposite to the sealing area SS and the fourth auxiliary fold line 104A, can be equal to provide a uniform cushioning effect. For example, the maximum distance between the first fold line 101 and the first auxiliary fold line 101A, the maximum distance between the second fold line 102 and the second auxiliary fold line 102A, the maximum distance between the third fold line 103 and the third auxiliary fold line 103A, and the maximum distance between the edge EE of the composite sheet opposite to the sealing area SS and the fourth auxiliary fold line 104A are all equal to each other.

[0077] See also Figure 4 and Figure 5 For example, in the first direction D1, the maximum distance between the third fold line 103 and the third auxiliary fold line 103A, and the maximum distance between the edge EE of the composite sheet opposite to the sealing area SS and the fourth auxiliary fold line 104A, are both less than or equal to 20% of the distance between the third fold line 103 and the fourth fold line 104A. Furthermore, the third auxiliary fold line 103A and the third fold line 103 are spaced apart from each other (i.e., they have no intersection), and the fourth auxiliary fold line 104A and the edge EE are also spaced apart from each other (i.e., they have no intersection). In this way, in addition to better cushioning, it also avoids applying pressure to the same area of ​​the composite sheet multiple times, which could adversely affect its structural stability and strength.

[0078] It should be noted that, Figure 4 and Figure 5 The difference lies only in: Figure 4 The central sealing area SS is located to the left of the main area 200 and the surrounding area 300, while... Figure 5 The central sealing zone SS is located to the right of the main area 200 and the surrounding area 300.

[0079] For example, the distance between the first broken line 101 and the second broken line 102 is equal to the distance between the third broken line 103 and the fourth broken line 104, in order to ensure the structural symmetry of the container.

[0080] See also Figure 4 and Figure 5For example, in the packaging composite sheet according to an embodiment of the present disclosure, the third auxiliary fold line 103A includes an arc segment such that as the third auxiliary fold line 103A extends from the edge 330 of the peripheral region 300 toward the main fold line 100, the distance between the third auxiliary fold line 103A and the third fold line 103 decreases; the fourth auxiliary fold line 104A includes an arc segment such that as the fourth auxiliary fold line 104A extends from the edge 330 of the peripheral region 300 toward the main fold line 100, the distance between the fourth auxiliary fold line 104A and the edge EE of the composite sheet opposite to the sealing area SS... The distance decreases; the arc segments AS of the first auxiliary broken line 101A and the second auxiliary broken line 102A bend towards the negative direction of the first direction D1, while the arc segments of the third auxiliary broken line 103A and the fourth auxiliary broken line 104A bend towards the positive direction of the first direction D1; or, the arc segments AS of the first auxiliary broken line 101A and the second auxiliary broken line 102A bend towards the positive direction of the first direction D1, while the arc segments AS of the third auxiliary broken line 103A and the fourth auxiliary broken line 104A bend towards the negative direction of the first direction D1. That is, the bending direction of the arc segment AS of the first auxiliary broken line 101A is the same as that of the arc segment AS of the second auxiliary broken line 102A, and the bending direction of the arc segments of the third auxiliary broken line 103A and the fourth auxiliary broken line 104A is the same, but the bending direction of the arc segments of the first two is opposite to that of the arc segments of the latter two. In this way, the first auxiliary zigzag line 101A, the second auxiliary zigzag line 102A, the third auxiliary zigzag line 103A, and the fourth auxiliary zigzag line 104A can provide a better buffering effect, reducing or even avoiding stress concentration; in particular, reducing the setting to avoid... Figure 1D The stress concentrations at positions P1 and P2 are shown.

[0081] For example, see Figure 2 and Figure 3A as well as Figure 4 and Figure 5In the composite sheet for packaging according to an embodiment of the present disclosure, the first auxiliary fold line 101A includes a straight segment LS connected to the arc segment AS and extending along the second direction D2. The straight segment LS is closer to the edge 330 of the peripheral region 300 than the arc segment AS. Both the straight segment LS and the arc segment AS are spaced apart from the first fold line 101, and the arc segment AS is also spaced apart from the main fold line 100. The second auxiliary fold line 102A includes a straight segment LS connected to the arc segment AS and extending along the second direction D2. The straight segment LS is closer to the edge of the peripheral region 300 than the arc segment AS. Both the straight segment LS and the arc segment AS are spaced apart from the second fold line 102. The third auxiliary line 103A includes a straight segment connected to the arc segment and extending along the second direction D2. The straight segment is closer to the edge of the peripheral area 300 than the arc segment. Both the straight segment and the arc segment are spaced apart from the third line 103A, and the arc segment is also spaced apart from the main line 100. The fourth auxiliary line 104A includes a straight segment connected to the arc segment and extending along the second direction D2. The straight segment is closer to the edge of the peripheral area 300 than the arc segment. Both the straight segment and the arc segment are spaced apart from the edge of the composite sheet opposite to the sealing area SS. The arc segment is also spaced apart from the main line 100. By providing both arc segments and straight segments for each auxiliary line, each auxiliary line can provide a better buffering effect for its corresponding line. By setting each auxiliary polyline to be 100 degrees apart from its corresponding polyline and the main polyline, in addition to better buffering effect, it can also avoid applying pressure to the same area of ​​the composite sheet multiple times, which would adversely affect the structural stability and structural strength of the composite sheet.

[0082] It should be noted that, in order to simplify the accompanying drawings, Figure 4 and Figure 5 The arc and straight segments of the third auxiliary polyline 103A and the straight and arc segments of the fourth auxiliary polyline 104A are not marked; however, based on Figure 2 The markings of the arc segment AS and straight line segment LS of the first auxiliary polyline 101A, the arc segment AS and straight line segment LS of the second auxiliary polyline 102A, the arc segment and straight line segment of the third auxiliary polyline 103A, and the arc segment and straight line segment of the fourth auxiliary polyline 104A are easy to understand.

[0083] For example, see Figure 2 and Figure 3A as well as Figure 4 and Figure 5In the packaging composite sheet according to embodiments of the present disclosure, in order to improve the cushioning effect during the bending of each flap toward the end surface of the container, the following settings can be made: the distance between the endpoint of the arc segment AS of the first auxiliary fold line 101A away from the straight segment LS and the first fold line 101, the distance d3 between the endpoint of the arc segment AS of the second auxiliary fold line 102A away from the straight segment LS and the second fold line 102, the distance between the endpoint of the arc segment AS of the third auxiliary fold line 103A away from the straight segment LS and the third fold line 103, and the distance between the endpoint of the arc segment AS of the fourth auxiliary fold line 104A away from the straight segment LS and the edge EE of the packaging composite sheet opposite to the sealing area SS are all 0.5-3.0. mm; the distances between the endpoint of the arc segment AS of the first auxiliary broken line 101A away from the straight segment LS and the main broken line 100, the distance d4 between the endpoint of the arc segment AS of the second auxiliary broken line 102A away from the straight segment LS and the main broken line 100, the distance between the endpoint of the arc segment AS of the third auxiliary broken line 103A away from the straight segment LS and the main broken line 100, and the distance between the endpoint of the arc segment AS of the fourth auxiliary broken line 104A away from the straight segment LS and the main broken line 100 are 0.5-24.5 mm respectively; the distance d1 between the straight segment LS of the first auxiliary broken line 101A and the first broken line 101, the distance d1' between the straight segment LS of the second auxiliary broken line 102A and the second broken line 102, the distance between the straight segment LS of the third auxiliary broken line 103A and the third broken line 103, and the distance between the straight segment LS of the fourth auxiliary broken line 104A and the edge of the packaging composite sheet opposite to the sealing area SS are 0.5-6.0 mm respectively.

[0084] For example, see Figure 2 and Figure 3A as well as Figure 4 and Figure 5In the packaging composite sheet according to the embodiments of this disclosure, in order to improve the cushioning effect during the bending of each ear towards the end surface of the container and to ensure the structural symmetry of the container, the following settings can be made: the distance between the endpoint of the arc segment AS of the first auxiliary fold line 101A away from the straight segment LS and the first fold line 101 is equal to the distance between the endpoint of the arc segment AS of the third auxiliary fold line 103A away from the straight segment LS and the third fold line 103, and the distance d3 between the endpoint of the arc segment AS of the second auxiliary fold line 102A away from the straight segment LS and the second fold line 102 is equal to the distance between the endpoint of the arc segment AS of the fourth auxiliary fold line 104A away from the straight segment LS and the edge of the packaging composite sheet opposite to the sealing area SS; the distance d3 between the endpoint of the arc segment AS of the first auxiliary fold line 101A away from the straight segment LS and the end point of the arc segment AS of the fourth auxiliary fold line 104 ... The distance between the point and the main broken line 100 is equal to the distance between the endpoint of the arc segment AS of the third auxiliary broken line 103A, which is away from the straight line segment LS, and the main broken line 100. The distance d4 between the endpoint of the arc segment AS of the second auxiliary broken line 102A, which is away from the straight line segment LS, and the main broken line 100 is equal to the distance between the endpoint of the arc segment AS of the fourth auxiliary broken line 104A, which is away from the straight line segment LS, and the main broken line 100. The distance d1 between the straight line segment LS of the first auxiliary broken line 101A and the first broken line 101, the distance d1' between the straight line segment LS of the second auxiliary broken line 102A and the second broken line 102, the distance between the straight line segment LS of the third auxiliary broken line 103A and the third broken line 103, and the distance between the straight line segment LS of the fourth auxiliary broken line 104A and the edge EE of the packaging composite sheet opposite to the sealing area SS are all equal to each other.

[0085] For example, in the packaging composite sheet according to an embodiment of the present disclosure, the first auxiliary fold line 101A, the second auxiliary fold line 102A, the third auxiliary fold line 103A, and the fourth auxiliary fold line 104A are grooves formed by applying pressure to the composite sheet; in this case, for example, the depths of the first auxiliary fold line 101A, the second auxiliary fold line 102A, the third auxiliary fold line 103A, and the fourth auxiliary fold line 104A are 0.1-2.5 mm, so that they can better provide a cushioning effect.

[0086] For example, in the composite sheet for packaging according to an embodiment of this disclosure, the first auxiliary fold line 101A, the second auxiliary fold line 102A, the third auxiliary fold line 103A, and the fourth auxiliary fold line 104A are grooves formed by applying pressure to the composite sheet; the depth of each of the first auxiliary fold line 101A, the second auxiliary fold line 102A, the third auxiliary fold line 103A, and the fourth auxiliary fold line 104A decreases in depth from the edge of the peripheral region 300 toward the main fold line 100. This not only ensures a cushioning effect but also prevents the first auxiliary fold line 101A, the second auxiliary fold line 102A, the third auxiliary fold line 103A, and the fourth auxiliary fold line 104A from adversely affecting the structural strength and structural stability of the edge of the ear flap obtained by folding the composite sheet.

[0087] For example, see Figure 2 and Figure 3A as well as Figure 4 and Figure 5 In the composite sheet for packaging according to an embodiment of the present disclosure, the first folded pattern area 310 further includes a first sub-auxiliary fold line 101A' and a second sub-auxiliary fold line 102A', extending along a second direction D2 and located between the first fold line 101 and the second fold line 102 in the first direction D1. In the first direction D1, the maximum distance between the first fold line 101 and the first sub-auxiliary fold line 101A' and the maximum distance between the second fold line 102 and the second sub-auxiliary fold line 102A' are respectively less than or equal to the distance between the first fold line 101 and the second fold line 102A'. The distance between them is 20%; the second folded pattern area 320 also includes a third sub-auxiliary fold line 103A' and a fourth sub-auxiliary fold line 104A', extending along the second direction D2 and located between the third fold line 103 and the fourth fold line 104 in the first direction D1. Specifically, in the first direction D1, the maximum distance between the third fold line 103 and the third sub-auxiliary fold line 103A', and the maximum distance between the fourth fold line 104 and the fourth sub-auxiliary fold line 104A', are respectively less than or equal to 20% of the distance between the first fold line 101 and the second fold line 102. For each fold line, in addition to the auxiliary fold lines described above, sub-auxiliary fold lines are also provided, which can better provide a buffering effect, reduce or even avoid stress concentration, thereby better ensuring that a series of problems caused by stress concentration are avoided.

[0088] See also Figure 2 and Figure 3A as well as Figure 4 and Figure 5For example, the first sub-auxiliary line 101A', the second sub-auxiliary line 102A', the third sub-auxiliary line 103A', and the fourth sub-auxiliary line 104A' are all located between the edge 330 of the peripheral region and the main line 100 in the second direction D2; that is, in the second direction D2, the above-mentioned sub-auxiliary lines do not extend beyond the main line 100, and they are all located only in the peripheral region 300 and do not enter the main region 200.

[0089] For example, the maximum distance between the first line 101 and the first sub-auxiliary line 101A', and the maximum distance between the second line 102 and the second sub-auxiliary line 102A', are respectively 0.5%-12% of the distance between the first line 101 and the second line 102. Similarly, the maximum distance between the third line 103 and the third sub-auxiliary line 103A', and the maximum distance between the fourth line 104 and the fourth sub-auxiliary line 104A', are respectively 0.5%-12% of the distance between the first line 101 and the second line 102. Thus, each sub-auxiliary line can provide a better buffering effect.

[0090] For example, the first zigzag line 101 and the first sub-auxiliary zigzag line 101A' are spaced apart from each other (i.e., they do not intersect). The second zigzag line 102 and the second sub-auxiliary zigzag line 102A' are also spaced apart from each other (i.e., they do not intersect). Similarly, the third zigzag line 103 and the third sub-auxiliary zigzag line 103A' are spaced apart from each other (i.e., they do not intersect). The fourth zigzag line 104 and the fourth sub-auxiliary zigzag line 104A' are also spaced apart from each other (i.e., they do not intersect). In this way, in addition to ensuring the cushioning effect, it is also possible to avoid applying pressure to the same area of ​​the composite sheet multiple times, which would adversely affect its structural strength and structural stability.

[0091] Figure 3B yes Figure 2 Enlarged view of the first fold pattern area of ​​the composite sheet for packaging shown. Figure 2 For example, the first auxiliary polyline 101A and the first sub-auxiliary polyline 101A' are spaced apart from each other (i.e., they have no intersection point), such as... Figure 3B As shown; in this way, in addition to ensuring the buffering effect, it can also avoid applying pressure to the same area of ​​the composite sheet multiple times, which would adversely affect its structural strength and structural stability. For example, according to an embodiment of this disclosure, the first auxiliary fold line 101A and the first sub-auxiliary fold line 101A' partially overlap, as shown. Figure 3AAs shown; since the maximum distance between the first auxiliary line 101A and the first line 101 is less than or equal to 20% of the distance between the first line 101 and the second line 102, and the maximum distance between the first sub-auxiliary line 101A' and the first line 101 is also less than or equal to 20% of the distance between the first line 101 and the second line 102, the first auxiliary line 101A and the first sub-auxiliary line 101A' may inevitably partially overlap; in this case, the buffering effect can still be guaranteed, and the difficulty of making the first auxiliary line 101A and the first sub-auxiliary line 101A' can be reduced without having to specifically separate them. Similarly, the third auxiliary line 103A and the third sub-auxiliary line 103A' partially overlap or are separated from each other, as shown... Figure 3A and 3B As shown.

[0092] For example, see Figure 2 and Figure 3A as well as Figure 4 and Figure 5In the composite sheet for packaging according to embodiments of the present disclosure, the first folded pattern area 310 further includes a first inclined fold line 111 and a second inclined fold line 112. The intersection of the first fold line 101 and the main fold line 100 is connected to the first inclined fold line 111 or its extension, and the intersection of the second fold line 102 and the main fold line 100 is connected to the second inclined fold line 112 or its extension. The second folded pattern area 320 further includes a third inclined fold line 113 and a fourth inclined fold line 114. The third fold line 103... The intersection of the main line 100 and the fourth line 104 with the main line 100 is connected to the third inclined line 113 or its extension; the intersection of the fourth line 104 with the main line 100 is connected to the fourth inclined line 114 or its extension; in the first direction D1, the first auxiliary line 101A and the first sub-auxiliary line 101A' are located between the first line 101 and the first inclined line 111, the second sub-auxiliary line 102A' is located between the second line 102 and the second inclined line 112, and the third auxiliary line 103A and the third... Sub-auxiliary line 103A' is located between the third line 103 and the third inclined line 113, and the fourth sub-auxiliary line 104A' is located between the fourth line 104 and the fourth inclined line 114; in the second direction D2, the first auxiliary line 101A is spaced apart from the first inclined line 111, and the first sub-auxiliary line 101A' does not exceed the first inclined line 111; the second auxiliary line 102A is spaced apart from the second inclined line 112, and the second sub-auxiliary line 102A' does not exceed the first inclined line 111. Two inclined fold lines 112, a third auxiliary fold line 103A spaced apart from the third inclined fold line 113, a third sub-auxiliary fold line 103A' not exceeding the third inclined fold line 113, and a fourth sub-auxiliary fold line 104A' not exceeding the fourth inclined fold line 114; after the composite sheet is connected into a sleeve through the sealing area SS, the fourth fold line 104 coincides with the edge EE of the composite sheet opposite to the sealing area SS, and the fourth auxiliary fold line 104A is spaced apart from the fourth inclined fold line 114 in the second direction D2. In the process of forming a container using composite sheet, the first inclined fold line 111 and the second inclined fold line 112 serve as the two edges of the first ear flap, while the third inclined fold line 113 and the fourth inclined fold line 114 serve as the two edges of the second ear flap, which are arranged opposite to each other. Through the above arrangement, in addition to ensuring the cushioning effect, it is also possible to avoid the various auxiliary fold lines and sub-auxiliary fold lines adversely affecting the structural strength and structural stability of the edge of each ear flap.

[0093] For example, see Figure 2 and Figure 3A as well as Figure 4 and Figure 5In the composite sheet for packaging according to an embodiment of the present disclosure, the first folded pattern area 310 further includes a fifth sub-auxiliary fold line 105A', which extends along the first direction D1, is located between the first sub-auxiliary fold line 101A' and the second sub-auxiliary fold line 102A', and is closer to the main fold line 100 than the first auxiliary fold line 101 in the second direction D2; the second folded pattern area 320 further includes a sixth sub-auxiliary fold line 106A', which extends along the first direction D1, is located between the third sub-auxiliary fold line 103A and the fourth sub-auxiliary fold line 104A, and is closer to the main fold line 100 than the third auxiliary fold line 103A in the second direction D2. For containers formed by folding and sealing composite sheets, the lugs of the container are usually two layers. The first to fourth auxiliary fold lines and the first to fourth sub-auxiliary fold lines are located on the upper layer of the lugs, while the fifth sub-auxiliary fold line 105A' and the sixth sub-auxiliary fold line 106A' are located on the lower layer of the lugs. This further provides a buffer for bending the first lug along the first fold line 101 and the second fold line 102, and also provides a buffer for bending the second lug along the first fold line 101 and the second fold line 102, thereby better reducing and avoiding stress concentration.

[0094] It should be noted that the composite sheet according to the embodiments of this disclosure may not have the first to fourth sub-auxiliary fold lines 101A' to 104A', the fifth sub-auxiliary fold line 105A', and the sixth sub-auxiliary fold line 106A'. The appropriate auxiliary fold lines can be formed later on the first and second flaps of the container at positions corresponding to the first to fourth sub-auxiliary fold lines 101A' to 104A', the fifth sub-auxiliary fold line 105A', and the sixth sub-auxiliary fold line 106A'.

[0095] For example, see Figure 2 and Figure 3A as well as Figure 4 and Figure 5 The packaging composite sheet according to embodiments of this disclosure further includes: an opposing main fold line 400 extending substantially along a first direction D1; and an opposing peripheral region 500 disposed opposite to the peripheral region 300 across the main region 200 in a second direction D2. The pattern of the opposing peripheral region 500 differs from the pattern of the peripheral region 300. For example, Figure 2 and Figure 3A as well as Figure 4 and Figure 5 Composite sheets are used to form Figure 11A and Figure 11B The container shown.

[0096] Figure 6 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure. Figure 4 For example, see Figure 6According to an embodiment of this disclosure, the packaging composite sheet includes two main fold lines 100, which divide the composite sheet into a main body region 200 and two peripheral regions 300; along a second direction D2, the main body region 200 is connected between the two peripheral regions 300; each of the two peripheral regions 300 includes either a first folded pattern area 310 or both a first folded pattern area 310 and a second folded pattern area 320. Figure 2 and Figure 3A as well as Figure 4 and Figure 5 different, Figure 6 The composite sheet in the middle is axially symmetric with respect to the axis of symmetry parallel to the first direction D1, thus enabling the formation of shapes different from those in the middle. Figure 11A and Figure 11B The container shown.

[0097] Figure 7 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure. Figure 5 , Figure 8 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure. Figure 6 ,and Figure 9 This is a plan view of a composite sheet for packaging according to an embodiment of the present disclosure. Figure 7 Composite sheets are blanks used to make containers; as an example, Figure 2 as well as Figure 4-6 The images show only the composite sheet used to fabricate one container, which can be referred to as composite sheet unit U. See also Figures 7 to 9 The packaging composite sheet according to embodiments of this disclosure may include a plurality of composite sheet units U; as an example, Figures 7 to 9 The packaging composite sheet shown according to embodiments of the present disclosure may include multiple such Figure 2 The composite sheet unit U is shown. Figure 7 In this embodiment of the present disclosure, the composite sheet includes a plurality of composite sheet units U connected together, the plurality of composite sheet units U being arranged only along a first direction D1. Figure 8 In this embodiment of the present disclosure, the packaging composite sheet includes a plurality of composite sheet units U connected together, the plurality of composite sheet units U being arranged only along a second direction D2. Figure 9 According to an embodiment of the present disclosure, the composite sheet for packaging includes a plurality of composite sheet units U connected together, the plurality of composite sheet units U being arranged along a first direction D1 and a second direction D2, respectively. The composite sheet according to an embodiment of the present disclosure can be used in… Figure 2 as well as Figure 4-6 Each of the forms shown can also be presented in... Figure 7 or Figure 8 or Figure 9The present disclosure presents the form shown, but does not limit the scope of the embodiments described herein. When the packaging composite sheet according to the embodiments of the present disclosure is... Figure 7 or Figure 8 or Figure 9 When presented in the form shown, the composite sheet needs to be cut first to obtain the composite sheet unit U used to make a packaging container, and then folded and sealed.

[0098] Figure 10 This is a schematic diagram of a packaging sleeve according to an embodiment of the present disclosure. See also... Figure 10 According to embodiments of this disclosure, a packaging sleeve 600 is also provided, comprising the packaging composite sheet as described above; that is, the packaging sleeve 600 according to embodiments of this disclosure is formed by longitudinally sealing the composite sheet according to embodiments of this disclosure. Since the packaging sleeve 600 according to embodiments of this disclosure comprises the composite sheet according to embodiments of this disclosure, stress concentration can be alleviated or even eliminated during the subsequent sealing and folding of the packaging sleeve 600 to form a container, thereby avoiding a series of problems caused by stress concentration, such as thinning of local areas of the container, weakening of structural strength or tearing, leading to increased air permeability and water permeability of the container, and leakage of the contents contained within the container, etc.

[0099] According to embodiments of this disclosure, a container is also provided, comprising the packaging composite sheet as described above. That is, the container according to embodiments of this disclosure is formed by longitudinally sealing, end sealing, and multiple folding of the composite sheet according to embodiments of this disclosure. Because the container according to embodiments of this disclosure is formed using the composite sheet according to embodiments of this disclosure, it avoids a series of problems caused by stress concentration, such as thinning of local areas of the container, weakening of structural strength, tearing, and consequently increased air permeability and water permeability of the container, as well as leakage of the contents contained within the container. Figure 11A This is a schematic diagram of a container according to an embodiment of the present disclosure. Figure 12A This is a schematic diagram of a container according to an embodiment of the present disclosure. Figure 2 As an example, Figure 11A and Figure 12A Two different shapes of containers are shown; however, the embodiments of this disclosure are not limited thereto, and containers according to the embodiments of this disclosure may also have other shapes.

[0100] The above combination Figures 2 to 9This document describes a packaging composite sheet according to embodiments of the present disclosure, including fold lines, auxiliary fold lines disposed thereon, and their relative positional relationships. The fold lines and auxiliary fold lines involved in the ear flap bending process will be described below from the perspective of a container. During the description, the correspondence between the fold lines and auxiliary fold lines on the container and the fold lines and auxiliary fold lines of the previously described composite sheet will be explained, so that those skilled in the art can clearly understand the positional changes of the fold lines and auxiliary lines of the composite sheet according to embodiments of the present disclosure after forming a container according to embodiments of the present disclosure.

[0101] Figure 11B yes Figure 11A A schematic diagram of the first container surface shown. Figure 12B yes Figure 12A A schematic diagram of the first container surface shown. Figure 11B and Figure 12B In the middle, the first ear flap 31 and the second ear flap 32 of the container have been bent and attached to the first container surface 20S of the container. Figure 13 This is a schematic diagram of the container according to an embodiment of the present disclosure before the first and second ear flaps are bent; that is, in Figure 13 In the middle, the first ear wing 31 and the second ear wing 32 have not yet been bent and attached to the first container surface 20S of the container.

[0102] See Figure 11B , Figure 12B as well as Figure 13 This disclosure provides a container, which includes a container body 20 (see...). Figure 11A as well as Figure 12AThe container body 20 includes a first container surface 20S surrounded by a container main fold line 10, and the first ear flap 31 has a first wing surface 31S connected to the first container surface 20S. The container also has a sealing ridge 33 for sealing the container, which is disposed along a third direction D3 on the first container surface 20S and the first wing surface 31S, dividing the first container surface 20S into a first container sub-surface 20S-1 and a second container sub-surface 20S-2, and dividing the first wing surface 31S into a first wing sub-surface 31S-1 and a second wing surface 31S-2. In a fourth direction D4 intersecting the third direction D3, the sealing ridge 33 is configured to bend toward the first container sub-surface 20S-1 and the first wing surface 31S-1. In the third direction D3, the first wing surface 31S-1 is connected to the first container surface 20S-1 and the first container fold line 11 extending along the fourth direction D4 serves as the space between them. The boundary line is formed by connecting the second wing surface 31S-2 and the second container sub-surface 20S-2, with the second container fold line 12 extending along the fourth direction D4 as the boundary line between them. The endpoint of the first container fold line 11 away from the sealing ridge 33 is the first endpoint 11E, and the endpoint of the second container fold line 12 away from the sealing ridge 33 is the second endpoint 12E. The first wing surface 31S-1 has a first container auxiliary fold line 11A, which extends at least partially along the fourth direction D4. The second container sub-surface 20S-2 has a second container auxiliary fold line 12A, which extends at least partially along the fourth direction D4. Furthermore, in the third direction D3, the maximum distance between the first container fold line 11 and the first container auxiliary fold line 11A, and the maximum distance between the second container fold line 12 and the second container auxiliary fold line 12A, are each less than or equal to 20% of the length of the portion of the container main fold line 10 located between the first endpoint 11E and the second endpoint 12E.

[0103] It should be noted that in the container according to the embodiments of the present disclosure, the container body 20 is formed by the main body region 200 of the composite sheet according to the embodiments of the present disclosure, the first container surface 20S and the sealing ridge 33 are formed by the peripheral region 300 of the composite sheet according to the embodiments of the present disclosure, the container main fold line 10 is the main fold line 100 of the composite sheet according to the embodiments of the present disclosure, the first container fold line 11 is the first fold line 101 of the composite sheet according to the embodiments of the present disclosure, the second container fold line 12 is the second fold line 102 of the composite sheet according to the embodiments of the present disclosure, the first container auxiliary fold line 11A is the first auxiliary fold line 101A of the composite sheet according to the embodiments of the present disclosure, the second container auxiliary fold line 12A is the second auxiliary fold line 102A of the composite sheet according to the embodiments of the present disclosure, and the length of the portion of the container main fold line 10 located between the first endpoint 11E and the second endpoint 12E is the distance between the first fold line 101 and the second fold line 102 of the composite sheet according to the embodiments of the present disclosure.

[0104] It should be noted that the main fold line 10 of the container surrounds the surface 20S of the first container; that is, the main fold line 10 of the container is a closed loop. Figure 13 In the diagram, for the sake of simplicity, only the left and right portions of the main container line 10 are shown; in reality, the main container line 10 also has an upper portion that substantially coincides with the first container line 11 and the second container line 12, and a lower portion that substantially coincides with the third container line 13 and the fourth container line 14 (described later). Accordingly, the length of the portion of the main container line 10 located between the first endpoint 11E and the second endpoint 12E is the length of the upper portion of the main container line 10, that is, the length of the portion of the main container line 10 that substantially coincides with the first container line 11 and the second container line 12.

[0105] According to embodiments of this disclosure, for example, the first container fold line 11 and the second container fold line 12 are used to bend and attach the first ear flap 31 to the first container surface 20S of the container; for example, the first container surface 20S is the bottom surface or the top surface of the container; as an example, Figure 11B and Figure 12BBoth are shown as the bottom surface of the first container surface 20S. According to embodiments of this disclosure, a first auxiliary fold line 11A is provided at an appropriate position for the first container fold line 11, and a second auxiliary fold line 12A is provided at an appropriate position for the second container fold line 12. This allows the first auxiliary fold line 11A and the second auxiliary fold line 12A to provide a cushioning effect when the first ear wing 31 is bent and attached to the first container surface 20S along the first container fold line 11 and the second container fold line 12, reducing or even avoiding stress concentration. This avoids a series of problems caused by stress concentration, such as thinning of the container in local areas, weakening of structural strength, or tearing, leading to increased air permeability and water permeability of the container, and leakage of the contents contained within the container. In particular, it can reduce or even avoid... Figure 1D Stress concentration occurs at either position P1 or position P2.

[0106] As described above, in the third direction D3, the maximum distance between the first container line 11 and the first container auxiliary line 11A, and the maximum distance between the second container line 12 and the second container auxiliary line 12A, are respectively less than or equal to 20% of the length of the portion of the container main line 10 located between the first endpoint 11E and the second endpoint 12E; furthermore, in the third direction D3, the maximum distance between the first container line 11 and the first container auxiliary line 11A, and the maximum distance between the second container line 12 and the second container auxiliary line 12A, are respectively 0.5%-12% of the length of the portion of the container main line 10 located between the first endpoint 11E and the second endpoint 12E, so that the first container auxiliary line 11A and the second container auxiliary line 10A can provide better buffering effect.

[0107] It should be noted that, on the third direction D3, the maximum distance between the first container fold line 11 and the first container auxiliary fold line 11A, and the maximum distance between the second container fold line 12 and the second container auxiliary fold line 12A, can be equal to or unequal to each other, as long as each of them is less than or equal to 20% of the length of the portion of the container main fold line 10 located between the first endpoint 11E and the second endpoint 12E. For example, the maximum distance between the first container fold line 11 and the first container auxiliary fold line 11A, and the maximum distance between the second container fold line 12 and the second container auxiliary fold line 12A, can be equal to each other, so that the first container auxiliary fold line 11A and the second container auxiliary fold line 10A can provide a uniform buffering effect.

[0108] For example, the first container auxiliary fold line 11A and the first container fold line 11 are spaced apart from each other (i.e., they do not intersect), and the second container auxiliary fold line 12A and the second container fold line 12 are spaced apart from each other (i.e., they do not intersect). In this way, in addition to better cushioning effect, it can also avoid applying pressure to the same area of ​​the composite sheet multiple times, which would adversely affect its structural stability and structural strength.

[0109] For example, the first container auxiliary fold line 11A is located only within the first wing surface 31S-1 and does not extend into the first container sub-surface 20S-1, and the second container auxiliary fold line 12A is located only within the second container sub-surface 20S-2 and does not extend into the second wing surface 31S-2.

[0110] See also Figure 11B , Figure 12B as well as Figure 13 For example, in a container according to an embodiment of this disclosure, the first container auxiliary fold line 11A includes an arc segment AS such that the distance between the first container auxiliary fold line 11A and the first container fold line 11 decreases as the first container auxiliary fold line 11A extends from the free end of the sealing ridge 33 toward the first endpoint 11E; and the second container auxiliary fold line 12A includes an arc segment AS such that the distance between the second container auxiliary fold line 12A and the second container fold line 12 decreases as the second container auxiliary fold line 12A extends from the free end of the sealing ridge 33 toward the second endpoint 12E. In this way, the first container auxiliary fold line 11A and the second container auxiliary fold line 12A can provide better cushioning, reducing or even avoiding stress concentration.

[0111] See also Figure 11B , Figure 12B as well as Figure 13 For example, in the container according to an embodiment of the present disclosure, the bending direction of the arc segment AS of the first container auxiliary fold line 11A is opposite to the bending direction of the arc segment AS of the second container auxiliary fold line 12A; for example, the arc segment AS of the first container auxiliary fold line 11A bends in the negative direction of D3, while the arc segment AS of the second container auxiliary fold line 12A bends in the positive direction of D3. It should be noted that the container according to an embodiment of the present disclosure is formed by repeatedly folding and sealing a composite sheet according to an embodiment of the present disclosure. Due to the multiple folds, the statement that "the bending direction of the arc segment AS of the first container auxiliary fold line 11A is opposite to the bending direction of the arc segment AS of the second container auxiliary fold line 12A" is not contradictory to the statement that "the bending direction of the arc segment AS of the first auxiliary fold line 101A is the same as the bending direction of the arc segment AS of the second auxiliary fold line 102A" as described above, but rather they are self-consistent.

[0112] See also Figure 11B , Figure 12B as well as Figure 13 For example, the container according to an embodiment of the present disclosure further includes a second flap 32 connected to the container body 20. The second flap 32 has a second flap surface 32S connected to the first container surface 20S; a sealing ridge 33 is also disposed along a third direction D3 on the second flap surface 32S, dividing the second flap surface 32S into a third flap sub-surface 32S-1 and a fourth flap surface 32S-2; along the third direction D3, the third flap surface 32S-1 is connected to the first container sub-surface 20S-1 with a third container fold line 13 as the boundary line between them, and the fourth flap surface 32S-2 is connected to the second container surface 20S-2 with a fourth container fold line 14 as the boundary line between them; the endpoint of the third container fold line 13 furthest from the sealing ridge 33 is the third endpoint 13. E, the endpoint of the fourth container fold line 14 away from the sealing ridge 33 is the fourth endpoint 14E; the third wing surface 32S-1 has a third container auxiliary fold line 13A, which extends at least partially along the fourth direction D4; the second container sub-surface 20S-2 has a fourth container auxiliary fold line 14A, which extends at least partially along the fourth direction D4; and in the third direction D3, the maximum distance between the third container fold line 13 and the third container auxiliary fold line 13A and the maximum distance between the fourth container fold line 14 and the fourth container auxiliary fold line 14A are respectively less than or equal to 20% of the length of the portion of the container main fold line 10 located between the third endpoint 13E and the fourth endpoint 14E.

[0113] It should be noted that in the container according to the embodiments of this disclosure, the third container fold line 13 is the third fold line 103 of the composite sheet according to the embodiments of this disclosure (see...). Figure 4 and Figure 5 ) or the first fold line 101 of another first fold pattern area 310 among two adjacent first fold pattern areas 310 (see Figure 2 The fourth container fold line 14 is the fourth fold line 104 of the composite sheet according to the embodiments of this disclosure (see...). Figure 4 and Figure 5 ) or the second fold line 102 of one of the two adjacent first fold pattern areas 310 (see Figure 2 The third auxiliary fold line 13A is the third auxiliary fold line 103A of the composite sheet according to the embodiments of this disclosure (see...). Figure 4 and Figure 5 ) or the first auxiliary fold line 101A of one of the two adjacent first fold pattern areas 310 (see Figure 2 The fourth auxiliary fold line 14A is the fourth auxiliary fold line 104A of the composite sheet according to the embodiments of this disclosure (see...). Figure 4 and Figure 5) or the second auxiliary fold line 102 of one of the two adjacent first fold pattern areas 310 (see Figure 2 The length of the portion of the container main fold line 10 located between the third endpoint 13E and the fourth endpoint 14E is the distance between the third fold line 103 and the fourth fold line 104 of the composite sheet according to the above-mentioned embodiment of the present disclosure (see...). Figure 4 and Figure 5 ) or the distance between the first fold line 101 and the second fold line 102 of one of two adjacent first fold pattern areas 310 (see Figure 2 ).

[0114] It should be noted that the length of the portion of the main container line 10 located between the third endpoint 13E and the fourth endpoint 14E is the length of the lower portion of the main container line 10, that is, the length of the portion of the main container line 10 that substantially overlaps with the third container line 13 and the fourth container line 14.

[0115] According to embodiments of this disclosure, for example, the third container fold line 13 and the fourth container fold line 14 are used to bend and attach the second ear flap 32 to the first container surface 20S of the container along them; for example, the first container surface 20S is the bottom surface or the top surface of the container; as an example, Figure 11B and Figure 12B The first container surface 20S is shown as the bottom surface of the container. According to embodiments of this disclosure, a third auxiliary fold line 13A is provided at an appropriate position for the third container fold line 13, and a fourth auxiliary fold line 14A is provided at an appropriate position for the fourth container fold line 14. This allows the third auxiliary fold line 13A and the fourth auxiliary fold line 14A to provide a cushioning effect when the second lug 32 is bent and attached to the first container surface 20S along the third and fourth container fold lines 13 and 14, reducing or even avoiding stress concentration. This avoids a series of problems caused by stress concentration, such as thinning of the container in local areas, weakening of structural strength, tearing, and consequently increased air and water permeability of the container, as well as leakage of the contents contained within the container. In particular, because the first auxiliary fold line 11A, the second auxiliary fold line 12A, the third auxiliary fold line 13A, and the fourth auxiliary fold line 14A are respectively provided at appropriate positions, stress concentration can be reduced or even avoided. Figure 1D Stress concentrations occur at both positions P1 and P2.

[0116] As described above, on the third direction D3, the maximum distance between the third container line 13 and the third container auxiliary line 13A, and the maximum distance between the fourth container line 14 and the fourth container auxiliary line 14A, are each less than or equal to 20% of the length of the portion of the container main line 10 located between the third endpoint 13E and the fourth endpoint 14E. Furthermore, on the third direction D3, the maximum distance between the third container line 13 and the third container auxiliary line 13A, and the maximum distance between the fourth container line 14 and the fourth container auxiliary line 14A, are each 0.5%-12% of the length of the portion of the container main line 10 located between the third endpoint 13E and the fourth endpoint 14E, so that the third container auxiliary line 13A and the fourth container auxiliary line 14A can provide better buffering effect.

[0117] It should be noted that, on the third direction D3, the maximum distance between the third container polyline 13 and the third container auxiliary polyline 13A, and the maximum distance between the fourth container polyline 14 and the fourth container auxiliary polyline 14A, can be equal to or unequal to each other, as long as each of them is less than or equal to 20% of the length of the portion of the container main polyline 10 located between the third endpoint 13E and the fourth endpoint 14E. For example, the maximum distance between the third container polyline 13 and the third container auxiliary polyline 13A, and the maximum distance between the fourth container polyline 14 and the fourth container auxiliary polyline 14A, can be equal to each other, so that the third container auxiliary polyline 13A and the fourth container auxiliary polyline 14A can provide a uniform buffering effect.

[0118] For example, the auxiliary fold line 13A and the third container fold line 13 are spaced apart from each other (i.e., they do not intersect), and the auxiliary fold line 14A and the fourth container fold line 14 are spaced apart from each other (i.e., they do not intersect). In this way, in addition to better cushioning effect, it can also avoid applying pressure to the same area of ​​the composite sheet multiple times, which would adversely affect its structural stability and structural strength.

[0119] For example, the third container auxiliary line 13A is located only within the third wing surface 32S-1 and does not extend into the first container sub-surface 20S-1, and the fourth container auxiliary line 14A is located only within the second container sub-surface 20S-2 and does not extend into the fourth wing surface 32S-2.

[0120] For example, the length of the portion of the main line 10 of the container located between the first endpoint 11E and the second endpoint 12E is equal to the length of the portion of the main line 10 of the container located between the third endpoint 13E and the fourth endpoint 14E, so that the container has better structural symmetry, which is beneficial to the structural stability of the container.

[0121] For example, the maximum distance between the first container line 11 and the first container auxiliary line 11A, the maximum distance between the second container line 12 and the second container auxiliary line 12A, the maximum distance between the third container line 13 and the third container auxiliary line 13A, and the maximum distance between the fourth container line 14 and the fourth container auxiliary line 14A are all equal to each other.

[0122] See also Figure 11B , Figure 12B as well as Figure 13 For example, in a container according to an embodiment of the present disclosure, the third container auxiliary fold line 13A includes an arc segment such that the distance between the third container auxiliary fold line 13A and the third container fold line 13 decreases as the third container auxiliary fold line 13A extends from the free end of the sealing ridge 33 toward the third endpoint 13E; and the fourth container auxiliary fold line 14A includes an arc segment such that the distance between the fourth container auxiliary fold line 14A and the fourth container fold line 14 decreases as the fourth container auxiliary fold line 14A extends from the free end of the sealing ridge 33 toward the fourth endpoint 14E. In this way, the third container auxiliary fold line 13A and the fourth container auxiliary fold line 14A can provide a better cushioning effect, reducing or even avoiding stress concentration.

[0123] See also Figure 11B , Figure 12B as well as Figure 13 For example, in a container according to an embodiment of the present disclosure, the bending direction of the arc segment of the third container auxiliary fold line 13A is opposite to the bending direction of the arc segment of the fourth container auxiliary fold line 14A; for example, the arc segment of the third container auxiliary fold line 13A bends in the positive direction of the third party to D3 while the arc segment of the fourth container auxiliary fold line 14A bends in the negative direction of the third party to D3.

[0124] See also Figure 11B , Figure 12B as well as Figure 13 For example, in a container according to an embodiment of the present disclosure, the bending direction of the arc segment of the third container auxiliary line 13A is the same as the bending direction of the arc segment AS of the second container auxiliary line 12A, both facing the positive direction of the first direction D3; the bending direction of the arc segment of the fourth container auxiliary line 14A is the same as the bending direction of the arc segment AS of the first container auxiliary line 11A, both facing the negative direction of the first direction D3.

[0125] See also Figure 11B , Figure 12B as well as Figure 13For example, in a container according to an embodiment of the present disclosure, the first container auxiliary fold line 11A includes a straight line segment LS connected to the arc segment AS and extending along the fourth direction D4. The straight line segment LS is closer to the sealing ridge 33 than the arc segment AS. Both the straight line segment LS and the arc segment AS are spaced apart from the first container fold line 11, and the arc segment AS is also spaced apart from the first endpoint 11E. The second container auxiliary fold line 12A includes a straight line segment LS connected to the arc segment AS and extending along the fourth direction D4. The straight line segment LS is closer to the sealing ridge 33 than the arc segment AS. Both the straight line segment LS and the arc segment AS are spaced apart from the second container fold line 12. The arc segment AS is also spaced apart from the second endpoint 12E; the third container auxiliary line 13A includes a straight segment connected to the arc segment and extending along the fourth direction D4, the straight segment being closer to the sealing ridge 33 than the arc segment, both the straight segment and the arc segment being spaced apart from the third container line 13, the arc segment also being spaced apart from the third endpoint 13E; the fourth container auxiliary line 14A includes a straight segment connected to the arc segment and extending along the fourth direction D4, the straight segment being closer to the sealing ridge 33 than the arc segment, both the straight segment LS and the arc segment AS being spaced apart from the fourth container line 14, the arc segment AS also being spaced apart from the third endpoint 13E. By setting both arc segments and straight segments for each container auxiliary line, each container auxiliary line can provide a better buffering effect for its corresponding container line. By setting each container auxiliary line to be spaced apart from its corresponding container line, in addition to better buffering effect, it is also possible to avoid applying pressure to the same area of ​​the composite sheet multiple times, which would adversely affect the structural stability and structural strength of the composite sheet.

[0126] It should be noted that, in order to simplify the accompanying drawings, Figure 13 The arc and straight segments of the auxiliary polyline 13A for the third container and the straight and arc segments of the auxiliary polyline 14A for the fourth container are not marked; however, based on Figure 13 The markings of the arc segment AS and straight segment LS of the first container auxiliary polyline 11A, the arc segment AS and straight segment LS of the second container auxiliary polyline 12A, the arc segment and straight segment of the third container auxiliary polyline 13A, and the straight segment and arc segment of the fourth container auxiliary polyline 14A are easy to understand.

[0127] See also Figure 11B , Figure 12B as well as Figure 13For example, in a container according to an embodiment of this disclosure, in order to improve the cushioning effect during the process of bending and attaching the first ear flap 31 and the second ear flap 32 to the surface of the first container for 20 seconds, the following settings can be made: the distance between the endpoint of the arc segment AS of the first container auxiliary fold line 11A that is away from the straight segment LS and the first container fold line 11, the distance between the endpoint of the arc segment AS of the second container auxiliary fold line 12A that is away from the straight segment LS and the second container fold line 12, the distance between the endpoint of the arc segment of the third container auxiliary fold line 13A that is away from the straight segment LS and the third container fold line 13, and the distance between the endpoint of the arc segment of the fourth container auxiliary fold line 14A that is away from the straight segment LS and the fourth container fold line 14 are all 0.5-3.0. mm; the distances between the endpoint of the arc segment AS of the first container auxiliary fold line 11A away from the straight segment LS and the first endpoint 11E, the distances between the endpoint of the arc segment AS of the second container auxiliary fold line 12A away from the straight segment LS and the second endpoint 12E, the distances between the endpoint of the arc segment LS of the third container auxiliary fold line 13A away from the straight segment LS and the third endpoint 13E, and the distances between the endpoint of the arc segment LS of the fourth container auxiliary fold line 14A away from the straight segment LS and the fourth endpoint 14E are 0.5-24.5 mm respectively; the distances between the straight segment LS of the first container auxiliary fold line 11A and the first container fold line 11, the distances between the straight segment LS of the second container auxiliary fold line 12A and the second container fold line 12, the distances between the straight segment of the third container auxiliary fold line 13A and the third container fold line 13, and the distances between the straight segment of the fourth container auxiliary fold line 14A and the edge of the packaging composite sheet opposite to the sealing area are 0.5-6.0 mm respectively.

[0128] See also Figure 11B , Figure 12B as well as Figure 13For example, in a container according to an embodiment of this disclosure, in order to improve the cushioning effect during the bending and attaching of the first ear flap 31 and the second ear flap 32 to the surface of the first container for 20S, and to ensure the structural symmetry of the container, the following settings can be made: the distance between the endpoint of the arc segment AS of the first container auxiliary fold line 11A away from the straight line segment LS and the first container fold line 11 is equal to the distance between the endpoint of the arc segment LS of the third container auxiliary fold line 13A away from the straight line segment LS and the third container fold line 13, and the distance between the endpoint of the arc segment AS of the second container auxiliary fold line 12A away from the straight line segment LS and the second container fold line 12 is equal to the distance between the endpoint of the arc segment S of the fourth container auxiliary fold line 14A away from the straight line segment LS and the fourth container fold line 14; the distance between the endpoint of the arc segment AS of the first container auxiliary fold line 11A away from the straight line segment LS and the endpoint of the arc segment AS of the second container auxiliary fold line 12A away from the straight line segment LS and the endpoint of the arc segment S of the fourth container auxiliary fold line 14A away from the straight line segment LS and the endpoint of the arc segment AS of the first container auxiliary fold line 11A away from the straight line segment LS is equal to the distance between the endpoint of the arc segment S of the fourth container auxiliary fold line 14A away from the straight line segment LS and the fourth container fold line 14; the distance between the endpoint of the arc segment AS of the first container auxiliary fold line 11A away from the straight line segment LS is equal to the distance between the endpoint of the arc segment S of the fourth container auxiliary fold line 14A away from the straight line segment LS and the endpoint of the arc segment S of the fourth container auxiliary fold line 14A away from the straight line segment LS is equal to the distance between the endpoint of the arc segment AS of the fourth The distance between the endpoint of the straight line segment LS and the first endpoint 11E is equal to the distance between the endpoint of the arc segment of the third container auxiliary polyline 13A that is far from the straight line segment LS and the second endpoint 12E. The distance between the endpoint of the arc segment AS of the second container auxiliary polyline 12A that is far from the straight line segment LS and the third endpoint 13E is equal to the distance between the endpoint of the arc segment of the fourth container auxiliary polyline 14A that is far from the straight line segment LS and the fourth endpoint 14E. The distances between the straight line segment LS of the first container auxiliary polyline 11A and the first container polyline 11, the distance between the straight line segment LS of the second container auxiliary polyline 12A and the second container polyline 12, the distance between the straight line segment of the third container auxiliary polyline 13A and the third container polyline 13, and the distance between the straight line segment of the fourth container auxiliary polyline 14A and the fourth container polyline 14 are all equal.

[0129] It should be noted that, in the container according to the embodiments of this disclosure, in order to ensure the cushioning effect, the setting position of each auxiliary fold line is closely related to the bending direction of the sealing ridge 33. As described above, the sealing ridge 33 is constructed to bend towards the first container sub-surface 20S-1 and the first wing surface 31S-1; in this case, the first container auxiliary fold line 11A needs to be set on the first wing surface 31S-1 and not on the first container sub-surface 20S-1, the second container auxiliary fold line 12A needs to be set on the second container sub-surface 20S-2 and not on the second wing surface 31S-2, the third container auxiliary fold line 13A needs to be set on the third wing surface 32S-1 and not on the first container surface 20S-1, and the fourth container auxiliary fold line 14A needs to be set on the second container surface 20S-2 and not on the fourth wing surface 32S-2.

[0130] For example, according to an embodiment of this disclosure, the first container auxiliary fold line 11A, the second container auxiliary fold line 12A, the third container auxiliary fold line 13A, and the fourth container auxiliary fold line 14A are pressure grooves; the depths of the first container auxiliary fold line 11A, the second container auxiliary fold line 12A, the third container auxiliary fold line 13A, and the fourth container auxiliary fold line 14A are 0.1-2.5 mm, respectively, so that they can better provide a cushioning effect.

[0131] For example, according to an embodiment of this disclosure, the first container auxiliary fold line 11A, the second container auxiliary fold line 12A, the third container auxiliary fold line 13A, and the fourth container auxiliary fold line 14A are pressure grooves; the depth of the first container auxiliary fold line 11A decreases from the sealing ridge 33 towards the first endpoint 11E, the depth of the second container auxiliary fold line 12A decreases from the sealing ridge 33 towards the second endpoint 12E, the depth of the third container auxiliary fold line 13A decreases from the sealing ridge 33 towards the third endpoint 13E, and the depth of the fourth container auxiliary fold line 14A decreases from the sealing ridge 33 towards the fourth endpoint 14E. In this way, not only is the cushioning effect guaranteed, but the first container auxiliary fold line 11A and the second container auxiliary fold line 12A are also prevented from adversely affecting the structural strength and stability of the edge of the first ear flap 31, and the third container auxiliary fold line 13A and the fourth container auxiliary fold line 14A are also prevented from adversely affecting the structural strength and stability of the edge of the second ear flap 32. It should be noted that the edge of the first ear wing 31 is the first inclined fold line 111 and the second inclined fold line 112 of the composite sheet according to the embodiments of the present disclosure; the edge of the second ear wing is the third inclined fold line 113 and the fourth inclined fold line 114 of the composite sheet according to the embodiments of the present disclosure (see...). Figure 4 and Figure 5 ) or the first inclined fold line 111 and the second inclined fold line 112 of another first fold pattern area 310 among two adjacent first fold pattern areas 310 (see Figure 2 ).

[0132] See also Figure 11B , Figure 12B as well as Figure 13For example, in a container according to an embodiment of the present disclosure, the first wing 31 has a first wing auxiliary fold line 31A' extending along a fourth direction D4 from the second wing surface 31S-2 through a sealing ridge 33 bent toward the first wing surface 31S-1 to the first wing surface 31S-1, and in a third direction D3, the distance between the first wing auxiliary fold line 31A' and the first container fold line 11 and / or the second container fold line 12 is less than or equal to the distance between the first endpoint 11E and the second endpoint 12E of the container main fold line 10. The distance between the first and second container fold lines is 20% of the distance between the first and second container fold lines 11 and 12 for bending the first wing 31, and the third and fourth container fold lines 13 and 14 for bending the second wing 32. The second wing 32 has a second wing auxiliary fold line 32A' extending along the fourth direction D4 from the fourth wing surface 32S-2 through a sealing ridge 33 bending towards the third wing surface 32S-1. Furthermore, in the third direction D3, the distance between the second wing auxiliary fold line 32A' and the third container fold line 13 and / or the fourth container fold line 14 is less than or equal to 20% of the distance between the third endpoint 13E and the fourth endpoint 14E of the main container fold line 10. In the container according to an embodiment of this disclosure, in addition to the container auxiliary fold lines described above, the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A' are also provided at appropriate locations for the first container fold line 11 and the second container fold line 12 for bending the first wing 31, and the third container fold line 13 and the fourth container fold line 14 for bending the second wing 32. This provides a better buffering effect, reduces or even avoids stress concentration, and thus better ensures that a series of problems caused by stress concentration are avoided. In particular, it can better reduce or even avoid [the occurrence of certain conditions]. Figure 1D Stress concentrations occur at both positions P1 and P2.

[0133] According to embodiments of this disclosure, for example, the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A' have corresponding portions on the composite sheet according to embodiments of this disclosure. More specifically, the first wing auxiliary fold line 31A' is a combination of the first sub-auxiliary fold line 101A' and the second sub-auxiliary fold line 102A' of the composite sheet according to embodiments of this disclosure, and the second wing auxiliary fold line 32A' is a combination of the third sub-auxiliary fold line 103A' and the fourth sub-auxiliary fold line 104A' of the composite sheet according to embodiments of this disclosure (see...). Figure 4 and Figure 5 () or a combination of the first sub-auxiliary fold line 101A' and the second sub-auxiliary fold line 102A' of one of the two adjacent first fold pattern areas 310.

[0134] As described above, the composite sheet according to embodiments of this disclosure may also omit the first to fourth sub-auxiliary fold lines 101A' to 104A', the fifth sub-auxiliary fold line 105A', and the sixth sub-auxiliary fold line 106A'. These auxiliary fold lines can be subsequently formed on the first and second flaps of the container at positions corresponding to the first to fourth sub-auxiliary fold lines 101A' to 104A', the fifth sub-auxiliary fold line 105A', and the sixth sub-auxiliary fold line 106A'. In this case, the first flap auxiliary fold line 31A' and the second flap auxiliary fold line 32A' will not have corresponding portions on the composite sheet according to embodiments of this disclosure; for example, the first flap auxiliary fold line 31A' is formed by applying pressure to the first flap 31, and the second flap auxiliary fold line 32A' is formed by applying pressure to the second flap 32. The case where the auxiliary fold lines 31A' and 32A' of the first wing and second wing are formed after the first wing 31 and second wing 32 are formed, compared to the case where the corresponding parts of the auxiliary fold lines 31A' and 32A' of the first wing and second wing are formed on the composite sheet, allows for better control over the formation position of the auxiliary fold lines 31A' and 32A'. Furthermore, since the first wing and second wing 32 are double-layered structures, they have better strength stability and stronger pressure resistance.

[0135] As described above, in the third direction D3, the distance between the first wing auxiliary line 31A' and the first container line 11 and / or the second container line 12 is less than or equal to 20% of the distance between the first endpoint 11E and the second endpoint 12E of the main container line 10. Further, for example, in the third direction D3, the distance between the first wing auxiliary line 31A' and the first container line 11 and / or the second container line 12 is 0.5%-12% of the distance between the first endpoint 11E and the second endpoint 12E of the main container line 10, so that the first wing auxiliary line 31A' can provide better cushioning when bending the first wing 31.

[0136] As described above, in the third direction D3, the distance between the second wing auxiliary line 32A' and the third container line 13 and / or the fourth container line 14 is less than or equal to 20% of the distance between the third endpoint 13E and the fourth endpoint 14E of the main container line 10. Further, for example, in the third direction D3, the distance between the second wing auxiliary line 32A' and the third container line 13 and / or the fourth container line 14 is 0.5%-12% of the distance between the third endpoint 13E and the fourth endpoint 14E of the main container line 10, so that the second wing auxiliary line 32A' can provide better cushioning when bending the second ear wing 32.

[0137] For example, according to embodiments of this disclosure, the distance between the first wing auxiliary fold line 31A' and the first container fold line 11 and / or the second container fold line 12, and the distance between the second wing auxiliary fold line 32A' and the third container fold line 13 and / or the fourth container fold line 14, may be equal to or unequal to each other. For example, the distances between the first wing auxiliary fold line 31A' and the first container fold line 11, the first wing auxiliary fold line 31A' and the second container fold line 12, the second wing auxiliary fold line 32A' and the third container fold line 13, and the second wing auxiliary fold line 32A' and the fourth container fold line 14 may be equal to each other, so that the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A' can provide a more uniform cushioning effect.

[0138] For example, the first wing auxiliary line 31A' is spaced apart from the first container line 11 and / or the second container line 12, and the second wing auxiliary line 32A' is spaced apart from the third container line 13 and / or the fourth container line 14. In this way, in addition to better cushioning, it can also avoid applying pressure to the same area of ​​the container multiple times, which would adversely affect its structural stability and structural strength.

[0139] For example, the first wing auxiliary fold line 31A' is located only within the first wing surface 31S and does not extend into the first container surface 20S, and the second wing auxiliary fold line 32A' is located only within the second wing surface 32S and does not extend into the first container surface 20S.

[0140] For example, the auxiliary fold line 31A' of the first wing intersects the edge of the first ear wing 31. For example, the auxiliary fold line 32A' of the second wing intersects the edge of the second ear wing 32.

[0141] Figure 14 This is a schematic diagram of the container according to an embodiment of the present disclosure before the first and second ear flaps are bent. Figure 2 For example, the first container auxiliary line 11A and the first wing auxiliary line 31A' are spaced apart from each other, as shown below. Figure 14 As shown; in this way, in addition to ensuring the buffering effect, it can also avoid applying pressure to the same area of ​​the container multiple times, which would adversely affect its structural strength and stability. For example, according to an embodiment of this disclosure, the first container auxiliary fold line 11A and the first wing auxiliary fold line 31A' partially overlap, as shown. Figure 13As shown; since the maximum distance between the first container auxiliary line 11A and the first container line 11 is less than or equal to 20% of the length of the portion of the main container line 10 located between the first endpoint 11E and the second endpoint 12E, and the distance between the first wing auxiliary line 31A' and the first container line 11 and / or the second container line 12 is also less than or equal to 20% of the distance between the first endpoint 11E and the second endpoint 12E of the main container line 10, the first container auxiliary line 11A and the first wing auxiliary line 31A' may inevitably partially overlap; in this case, the buffering effect can still be guaranteed, and the difficulty of making the first container auxiliary line 11A and the first wing auxiliary line 31A' can be reduced without having to specifically separate them. Similarly, the third container auxiliary line 13A and the second wing auxiliary line 32A' partially overlap or are separated from each other, as shown. Figure 13 and Figure 14 As shown.

[0142] For example, according to an embodiment of this disclosure, the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A' are pressure grooves; the radius of curvature of each of the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A' is 0.2-2.5 mm, so that the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A' can better provide a cushioning effect. For example, the radius of curvature of each of the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A' is 0.8-1.2 mm.

[0143] For example, according to an embodiment of this disclosure, the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A' are pressure grooves; the depth of each of the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A' is 0.1-2.5 mm, so that the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A' can better provide a cushioning effect. For example, the depth of each of the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A' is 1.0-2.0 mm.

[0144] See also Figure 11B , Figure 12B as well as Figure 13 For example, in a container according to an embodiment of the present disclosure, a first ear flap 31 has a third wing auxiliary fold line 31A' located on the back side of the first ear flap 31 opposite to the first wing surface 31S and corresponding to the first wing auxiliary fold line 31A', and a second ear flap 32 has a fourth wing auxiliary fold line 32A' located on the back side of the second ear flap 32 opposite to the second wing surface 32S and corresponding to the second wing auxiliary fold line 32A', so as to provide better cushioning effect during the bending of the first ear flap 31 along the first container fold line 11 and the second container fold line 12 and during the bending of the second ear flap 32 along the third container fold line 13 and the fourth container fold line 14.

[0145] As described above, according to embodiments of this disclosure, a first wing auxiliary fold line 31A' can be formed by applying pressure to the first ear 31, and a second wing auxiliary fold line 32A' can be formed by applying pressure to the second ear 32. For example, applying pressure to the first ear 31 forms a third wing auxiliary fold line 31A' simultaneously with forming the first wing auxiliary fold line 31A', and applying pressure to the second ear 32 forms a fourth wing auxiliary fold line 32A' simultaneously with forming the second wing auxiliary fold line 32A'. For example, the pressure forming the first wing auxiliary fold line 31A' and the third wing auxiliary fold line 31A' is applied directly to the surface 31S of the first wing; therefore, the depth of the third wing auxiliary fold line 31A' is less than or equal to the depth of the first wing auxiliary fold line 31A'. For example, the pressure forming the second wing auxiliary fold line 32A' and the fourth wing auxiliary fold line 32A' is applied directly to the surface 32S of the second wing; therefore, the depth of the fourth wing auxiliary fold line 32A' is less than or equal to the depth of the second wing auxiliary fold line 32A'.

[0146] According to embodiments of this disclosure, a method for manufacturing a container as described above is also provided. For example, according to an embodiment of this disclosure, the method for manufacturing a container includes: forming a first wing auxiliary fold line 31A' on a first ear 31, wherein the first wing auxiliary fold line 31A' extends along a fourth direction D4 from the second wing surface 31S-2 through a sealing ridge 33 bent toward the first wing surface 31S-1 to the first wing surface 31S-1, and in a third direction D3, the distance between the first wing auxiliary fold line 31A' and the first container fold line 11 and / or the second container fold line 12 is less than or equal to the distance between the first endpoint 11E and the second endpoint 1 of the container main fold line 10. 20% of the distance between 2E; a second wing auxiliary fold line 32A' is formed on the second ear 32, wherein the second wing auxiliary fold line 32A' extends along the fourth direction D4 from the fourth wing surface 32S-2 through the sealing ridge 33 bending towards the third wing surface 32S-1 to the third wing surface 32S-1, and in the third direction D3, the distance between the second wing auxiliary fold line 32A' and the third container fold line 13 and / or the fourth container fold line 14 is less than or equal to 20% of the distance between the third endpoint 13E and the fourth endpoint 14E of the container main fold line 10. For example, the first wing auxiliary fold line 31A' is formed by applying pressure to the first ear 31. For example, the second wing auxiliary fold line 32A' is formed by applying pressure to the second ear 32.

[0147] Figure 15 This is a schematic diagram showing that the sealing ridge in a container according to an embodiment of the present disclosure is not attached to the surface of the first container. See also Figure 15For example, according to an embodiment of this disclosure, after forming the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A', the method of manufacturing the container further includes: heating the first position C1 and the second position C2, the first position C1 being located at the intersection of the first container sub-surface 20S-1, the first wing surface 31S-1 and the sealing ridge 33, and the second position C2 being located at the intersection of the first container sub-surface 20S-1, the third wing surface 32S-1 and the sealing ridge 33; bending the sealing ridge 33 and attaching it to the first container surface 20S; and bending the first ear flap 31 and the second ear flap 32 and attaching them to the first container surface 20S. According to embodiments of this disclosure, after forming the first wing auxiliary fold line 31A' and the second wing auxiliary fold line 32A' and before bending the first ear wing 31 and the second ear wing 32 to attach to the surface of the first container 20S, heating the first position C1 and the second position C2 can soften the first position C1 and the second position C2 and the areas near them, increasing their toughness. This allows the composite sheet to withstand greater stress without breaking or tearing during the bending of the first ear wing 31 along the first container fold line 11 and the second container fold line 12, and during the bending of the second ear wing 32 along the third container fold line 13 and the fourth container fold line 14. In other words, heating the first position C1 and the second position C2 can also reduce or even avoid stress concentration. For example, the first position C1 and the second position C2 respectively correspond to Figure 1D Positions P1 and P2; therefore, heating the first position C1 and the second position C2 can reduce or even avoid [the problem]. Figure 1D Stress concentrations at positions P1 and P2.

[0148] For example, according to an embodiment of this disclosure, the first position C1 and the second position C2 are heated to 150ºC-210ºC to better soften the first position C1, the second position C, and the areas nearby thereon, thereby increasing their toughness. Furthermore, for example, the first position C1 and the second position C2 are heated to 180ºC.

[0149] It should be noted that, according to the embodiments of this disclosure, each fold line, each auxiliary fold line, and each sub-auxiliary fold line in the composite sheet, as well as each container fold line, each container auxiliary fold line, and each wing auxiliary fold line in the container, can be continuous lines or discontinuous lines, and the embodiments of this disclosure do not impose any restrictions on this.

[0150] The above description is merely an exemplary embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure, which is determined by the appended claims.

Claims

1. A composite sheet for packaging, comprising a main fold line extending along a first direction, wherein, The main zigzag line divides the composite sheet into a main area and a peripheral area, and the main area connects to the peripheral area along a second direction that intersects with the first direction; The surrounding area includes a first folded pattern area, which includes: The first and second broken lines extend along the second direction and are spaced apart from each other in the first direction; A first auxiliary broken line is located on the side of the first broken line facing the second broken line, and extends at least partially along the second direction; and The second auxiliary zigzag line is located on the side of the second zigzag line away from the first zigzag line, and extends at least partially along the second direction. Specifically, in the first direction, the maximum distance between the first broken line and the first auxiliary broken line, and the maximum distance between the second broken line and the second auxiliary broken line, are each less than or equal to 20% of the distance between the first broken line and the second broken line. In the second direction, the peripheral region has an edge that is far from the main region; The first auxiliary polyline includes an arc segment, such that as the first auxiliary polyline extends from the edge of the peripheral region toward the main polyline, the distance between the first auxiliary polyline and the first polyline decreases; The second auxiliary polyline includes an arc segment, such that the distance between the second auxiliary polyline and the main polyline decreases as the second auxiliary polyline extends from the edge of the peripheral region toward the main polyline.

2. The composite sheet for packaging according to claim 1, wherein, The surrounding area includes a plurality of first folded pattern areas, which are spaced apart from each other in the first direction; In two adjacent first folded pattern areas, the arc segments of the first auxiliary fold line and the second auxiliary fold line in one first folded pattern area bend toward the negative direction of the first direction, while the arc segments of the first auxiliary fold line and the second auxiliary fold line in the other first folded pattern area bend toward the positive direction of the first direction.

3. The composite sheet for packaging according to claim 2, wherein, In two adjacent first folded pattern areas, the first auxiliary fold line and the second auxiliary fold line of one first folded pattern area are axially symmetrical with respect to the first auxiliary fold line and the second auxiliary fold line of the other first folded pattern area with respect to the axis of symmetry parallel to the second direction.

4. The composite sheet for packaging according to any one of claims 1-3, further comprising a sealing area, wherein, The sealing area extends along the second direction and connects to the main body area and the surrounding area in the first direction; The surrounding area also includes a second folded pattern area, which includes: The third and fourth fold lines extend along the second direction and are spaced apart from each other in the first direction, wherein the fourth fold line is the boundary line between the sealing area and the surrounding area; The third auxiliary broken line is located on the side of the third broken line facing the fourth broken line, and extends at least partially along the second direction; and The surrounding area also includes a fourth auxiliary fold line, located at the edge of the composite sheet opposite to the sealing area, and extending at least partially along the second direction. In the first direction, the maximum distance between the third fold line and the third auxiliary fold line, and the maximum distance between the edge of the composite sheet opposite to the sealing area and the fourth auxiliary fold line, are respectively less than or equal to 20% of the distance between the third fold line and the fourth fold line.

5. The composite sheet for packaging according to claim 4, wherein, The third auxiliary polyline includes an arc segment, such that the distance between the third auxiliary polyline and the main polyline decreases as the third auxiliary polyline extends from the edge of the peripheral region toward the main polyline; The fourth auxiliary fold line includes an arc segment, such that as the fourth auxiliary fold line extends from the edge of the peripheral area toward the main fold line, the distance between the fourth auxiliary fold line and the edge of the composite sheet opposite to the sealing area decreases. The arc segments of the first and second auxiliary zigzag lines bend toward the negative direction of the first direction, while the arc segments of the third and fourth auxiliary zigzag lines bend toward the positive direction of the first direction; or, the arc segments of the first and second auxiliary zigzag lines bend toward the positive direction of the first direction, while the arc segments of the third and fourth auxiliary zigzag lines bend toward the negative direction of the first direction.

6. The composite sheet for packaging according to claim 5, wherein, The first auxiliary polyline includes a straight line segment connected to the arc segment and extending along the second direction. The straight line segment is closer to the edge of the peripheral area than the arc segment. Both the straight line segment and the arc segment are spaced apart from the first polyline. The arc segment is also spaced apart from the main polyline. The second auxiliary polyline includes a straight line segment connected to the arc segment and extending along the second direction. The straight line segment is closer to the edge of the peripheral area than the arc segment. Both the straight line segment and the arc segment are spaced apart from the second polyline. The arc segment is also spaced apart from the main polyline. The third auxiliary broken line includes a straight line segment connected to the arc segment and extending along the second direction. The straight line segment is closer to the edge of the peripheral area than the arc segment. Both the straight line segment and the arc segment are spaced apart from the third broken line. The arc segment is also spaced apart from the main broken line. The fourth auxiliary zigzag line includes a straight line segment connected to the arc segment and extending along the second direction. The straight line segment is closer to the edge of the peripheral area than the arc segment. Both the straight line segment and the arc segment are spaced apart from the edge of the composite sheet opposite to the sealing area. The arc segment is also spaced apart from the main zigzag line.

7. The composite sheet for packaging according to claim 6, wherein, The distances between the endpoint of the arc segment of the first auxiliary zigzag line away from the straight line segment and the first zigzag line, the distances between the endpoint of the arc segment of the second auxiliary zigzag line away from the straight line segment and the second zigzag line, the distances between the endpoint of the arc segment of the third auxiliary zigzag line away from the straight line segment and the third zigzag line, and the distances between the endpoint of the arc segment of the fourth auxiliary zigzag line away from the straight line segment and the edge of the packaging composite sheet opposite to the sealing area are 0.5-3.0 mm respectively. The distances between the endpoint of the arc segment of the first auxiliary broken line away from the straight line segment and the main broken line, the distances between the endpoint of the arc segment of the second auxiliary broken line away from the straight line segment and the main broken line, the distances between the endpoint of the arc segment of the third auxiliary broken line away from the straight line segment and the main broken line, and the distances between the endpoint of the arc segment of the fourth auxiliary broken line away from the straight line segment and the main broken line are 0.5-24.5 mm, respectively. The distances between the straight segment of the first auxiliary fold line and the first fold line, the distances between the straight segment of the second auxiliary fold line and the second fold line, the distances between the straight segment of the third auxiliary fold line and the third fold line, and the distances between the straight segment of the fourth auxiliary fold line and the edge of the packaging composite sheet opposite to the sealing area are 0.5-6.0 mm, respectively.

8. The composite sheet for packaging according to claim 6, wherein, The distance between the endpoint of the arc segment of the first auxiliary zigzag line away from the straight line segment and the first zigzag line is equal to the distance between the endpoint of the arc segment of the third auxiliary zigzag line away from the straight line segment and the third zigzag line, and the distance between the endpoint of the arc segment of the second auxiliary zigzag line away from the straight line segment and the second zigzag line is equal to the distance between the endpoint of the arc segment of the fourth auxiliary zigzag line away from the straight line segment and the edge of the packaging composite sheet opposite to the sealing area; The distance between the endpoint of the arc segment of the first auxiliary polyline away from the straight line segment and the main polyline is equal to the distance between the endpoint of the arc segment of the third auxiliary polyline away from the straight line segment and the main polyline, and the distance between the endpoint of the arc segment of the second auxiliary polyline away from the straight line segment and the main polyline is equal to the distance between the endpoint of the arc segment of the fourth auxiliary polyline away from the straight line segment and the main polyline. The distances between the straight segment of the first auxiliary fold line and the first fold line, the distances between the straight segment of the second auxiliary fold line and the second fold line, the distances between the straight segment of the third auxiliary fold line and the third fold line, and the distances between the straight segment of the fourth auxiliary fold line and the edge of the packaging composite sheet opposite to the sealing area are all equal to each other.

9. The composite sheet for packaging according to claim 4, wherein, The first auxiliary broken line, the second auxiliary broken line, the third auxiliary broken line, and the fourth auxiliary broken line are pressure grooves; The depths of the first auxiliary polyline, the second auxiliary polyline, the third auxiliary polyline, and the fourth auxiliary polyline are 0.1-2.5 mm, respectively.

10. The composite sheet for packaging according to claim 4, wherein, The first auxiliary broken line, the second auxiliary broken line, the third auxiliary broken line, and the fourth auxiliary broken line are pressure grooves; The depth of each of the first auxiliary polyline, the second auxiliary polyline, the third auxiliary polyline, and the fourth auxiliary polyline decreases from the edge of the peripheral region toward the main polyline.

11. The composite sheet for packaging according to claim 4, wherein, The first folded pattern area further includes a first sub-auxiliary fold line and a second sub-auxiliary fold line, extending along the second direction and located between the first fold line and the second fold line in the first direction, wherein, in the first direction, the maximum distance between the first fold line and the first sub-auxiliary fold line and the maximum distance between the second fold line and the second sub-auxiliary fold line are respectively less than or equal to 20% of the distance between the first fold line and the second fold line; The second folded pattern area further includes a third sub-auxiliary fold line and a fourth sub-auxiliary fold line, extending along the second direction and located between the third fold line and the fourth fold line in the first direction, wherein, in the first direction, the maximum distance between the third fold line and the third sub-auxiliary fold line and the maximum distance between the fourth fold line and the fourth sub-auxiliary fold line are respectively less than or equal to 20% of the distance between the first fold line and the second fold line.

12. The composite sheet for packaging according to claim 11, wherein, The first auxiliary polyline partially overlaps with or is spaced apart from the first sub-auxiliary polyline; The third auxiliary polyline partially overlaps with or is spaced apart from the third sub-auxiliary polyline.

13. The composite sheet for packaging according to claim 11, wherein, The first folded pattern area further includes a first inclined fold line and a second inclined fold line. The intersection of the first fold line and the main fold line is connected to the first inclined fold line or its extension line, and the intersection of the second fold line and the main fold line is connected to the second inclined fold line or its extension line. The second folded pattern area also includes a third inclined fold line and a fourth inclined fold line. The intersection of the third fold line and the main fold line is connected to the third inclined fold line or its extension. The intersection of the fourth fold line and the main fold line is connected to the fourth inclined fold line or its extension. In the first direction, the first auxiliary line and the first sub-auxiliary line are located between the first line and the first inclined line, the second sub-auxiliary line is located between the second line and the second inclined line, the third auxiliary line and the third sub-auxiliary line are located between the third line and the third inclined line, and the fourth sub-auxiliary line is located between the fourth line and the fourth inclined line. In the second direction, the first auxiliary line is spaced apart from the first inclined line, the first sub-auxiliary line does not exceed the first inclined line, the second auxiliary line is spaced apart from the second inclined line, the second sub-auxiliary line does not exceed the second inclined line, the third auxiliary line is spaced apart from the third inclined line, the third sub-auxiliary line does not exceed the third inclined line, and the fourth sub-auxiliary line does not exceed the fourth inclined line; After the composite sheet is connected into a sleeve through the sealing area, the fourth fold line coincides with the edge of the composite sheet opposite to the sealing area, and the fourth auxiliary fold line is spaced apart from the fourth inclined fold line in the second direction.

14. The composite sheet for packaging according to claim 4, wherein, The packaging composite sheet includes two main fold lines, which divide the composite sheet into the main body area and two peripheral areas. Along the second direction, the main body region is connected between the two peripheral regions; Each of the two surrounding areas includes either the first folded pattern area or both the first folded pattern area and the second folded pattern area.

15. A packaging sleeve comprising a packaging composite sheet as described in any one of claims 1-14.

16. A container comprising a packaging composite sheet as described in any one of claims 1-14.

17. A container, comprising a container body and a first lug connected to the container body, wherein, The container body includes a first container surface surrounded by a main container fold line, and the first ear has a first wing surface connected to the first container surface; The container also has a sealing ridge for sealing the container, the sealing ridge being disposed along a third direction on the first container surface and the first wing surface, dividing the first container surface into a first container sub-surface and a second container sub-surface, and dividing the first wing surface into a first wing sub-surface and a second wing surface. In a fourth direction intersecting the third direction, the sealing ridge is bent toward the first container sub-surface and the first wing surface; In the third direction, the first wing surface is connected to the first container sub-surface and the first container fold line extending along the fourth direction serves as the boundary line between them; the second wing surface is connected to the second container sub-surface and the second container fold line extending along the fourth direction serves as the boundary line between them; the endpoint of the first container fold line away from the sealing ridge is the first endpoint; and the endpoint of the second container fold line away from the sealing ridge is the second endpoint. The first wing surface has a first container-aided fold line that extends at least partially along the fourth direction; The second container sub-surface has a second container auxiliary fold line, extending at least partially along the fourth direction; and In the third direction, the maximum distance between the first container polyline and the first container auxiliary polyline, and the maximum distance between the second container polyline and the second container auxiliary polyline, are each less than or equal to 20% of the length of the portion of the main container polyline located between the first endpoint and the second endpoint. The first container auxiliary fold line includes an arc segment, such that the distance between the first container auxiliary fold line and the first container fold line decreases as the first container auxiliary fold line extends from the free end of the sealing ridge toward the first endpoint; and The second container auxiliary fold line includes an arc segment, such that the distance between the second container auxiliary fold line and the second container fold line decreases as the second container auxiliary fold line extends from the free end of the sealing ridge toward the second endpoint.

18. The container of claim 17, further comprising a second lug connected to the container body, wherein, The second ear wing has a second wing surface that is connected to the surface of the first container; The sealing ridge is also disposed on the second wing surface along a third direction, dividing the second wing surface into a third wing sub-surface and a fourth wing surface; In the third direction, the third wing surface is connected to the first container sub-surface and the third container fold line serves as the boundary line between them; the fourth wing surface is connected to the second container sub-surface and the fourth container fold line serves as the boundary line between them; the endpoint of the third container fold line away from the sealing ridge is the third endpoint; and the endpoint of the fourth container fold line away from the sealing ridge is the fourth endpoint. The surface of the third wing has a third container auxiliary fold line that extends at least partially along the fourth direction; The second container sub-surface has a fourth container auxiliary fold line, extending at least partially along the fourth direction; and In the third direction, the maximum distance between the third container line and the third container auxiliary line, and the maximum distance between the fourth container line and the fourth container auxiliary line, are each less than or equal to 20% of the length of the portion of the main container line located between the third endpoint and the fourth endpoint.

19. The container according to claim 18, wherein, The third container auxiliary fold line includes an arc segment, such that the distance between the third container auxiliary fold line and the third container fold line decreases as the third container auxiliary fold line extends from the free end of the sealing ridge toward the third endpoint; and The fourth container auxiliary fold line includes an arc segment, such that the distance between the fourth container auxiliary fold line and the fourth container fold line decreases as the fourth container auxiliary fold line extends from the free end of the sealing ridge toward the fourth endpoint.

20. The container according to claim 19, wherein, The first container auxiliary zigzag line includes a straight line segment connected to the arc segment and extending along the fourth direction. The straight line segment is closer to the sealing ridge than the arc segment. Both the straight line segment and the arc segment are spaced apart from the first container zigzag line. The arc segment is also spaced apart from the first endpoint. The second container auxiliary zigzag includes a straight line segment connected to the arc segment and extending along the fourth direction. The straight line segment is closer to the sealing ridge than the arc segment. Both the straight line segment and the arc segment are spaced apart from the second container zigzag. The arc segment is also spaced apart from the second endpoint. The third container auxiliary zigzag line includes a straight line segment connected to the arc segment and extending along the fourth direction. The straight line segment is closer to the sealing ridge than the arc segment. Both the straight line segment and the arc segment are spaced apart from the third container zigzag line. The arc segment is also spaced apart from the third endpoint. The fourth container auxiliary broken line includes a straight line segment connected to the arc segment and extending along the fourth direction. The straight line segment is closer to the sealing ridge than the arc segment. Both the straight line segment and the arc segment are spaced apart from the fourth container broken line. The arc segment is also spaced apart from the third endpoint.

21. The container according to claim 20, wherein, The distances between the endpoint of the arc segment of the first auxiliary container line away from the straight line segment and the first container line, the distances between the endpoint of the arc segment of the second auxiliary container line away from the straight line segment and the second container line, the distances between the endpoint of the arc segment of the third auxiliary container line away from the straight line segment and the third container line, and the distances between the endpoint of the arc segment of the fourth auxiliary container line away from the straight line segment and the fourth container line are 0.5-3.0 mm respectively. The distances between the endpoint of the arc segment of the first container auxiliary zigzag line away from the straight line segment and the first endpoint, the distances between the endpoint of the arc segment of the second container auxiliary zigzag line away from the straight line segment and the second endpoint, the distances between the endpoint of the arc segment of the third container auxiliary zigzag line away from the straight line segment and the third endpoint, and the distances between the endpoint of the arc segment of the fourth container auxiliary zigzag line away from the straight line segment and the fourth endpoint are 0.5-24.5 mm, respectively. The distances between the straight line segment of the first container auxiliary fold line and the first container fold line, the distances between the straight line segment of the second container auxiliary fold line and the second container fold line, the distances between the straight line segment of the third container auxiliary fold line and the third container fold line, and the distances between the straight line segment of the fourth container auxiliary fold line and the edge of the packaging composite sheet opposite to the sealing area are 0.5-6.0 mm, respectively.

22. The container according to claim 20, wherein, The distance between the endpoint of the arc segment of the first container auxiliary polyline away from the straight line segment and the first container polyline is equal to the distance between the endpoint of the arc segment of the third container auxiliary polyline away from the straight line segment and the third container polyline; and the distance between the endpoint of the arc segment of the second container auxiliary polyline away from the straight line segment and the second container polyline is equal to the distance between the endpoint of the arc segment of the fourth container auxiliary polyline away from the straight line segment and the fourth container polyline. The distance between the endpoint of the arc segment of the first container auxiliary polyline that is away from the straight line segment and the first endpoint is equal to the distance between the endpoint of the arc segment of the third container auxiliary polyline that is away from the straight line segment and the second endpoint, and the distance between the endpoint of the arc segment of the second container auxiliary polyline that is away from the straight line segment and the third endpoint is equal to the distance between the endpoint of the arc segment of the fourth container auxiliary polyline that is away from the straight line segment and the fourth endpoint. The distances between the straight line segment of the first container auxiliary polyline and the first container polyline, the distance between the straight line segment of the second container auxiliary polyline and the second container polyline, the distance between the straight line segment of the third container auxiliary polyline and the third container polyline, and the distance between the straight line segment of the fourth container auxiliary polyline and the fourth container polyline are all equal.

23. The container according to claim 20, wherein, The first container auxiliary fold line, the second container auxiliary fold line, the third container auxiliary fold line, and the fourth container auxiliary fold line are pressure grooves; The depths of the first container auxiliary line, the second container auxiliary line, the third container auxiliary line, and the fourth container auxiliary line are 0.1-2.5 mm, respectively.

24. The container according to claim 20, wherein, The first container auxiliary fold line, the second container auxiliary fold line, the third container auxiliary fold line, and the fourth container auxiliary fold line are pressure grooves; The depth of the first container auxiliary fold line decreases from the sealing ridge toward the first endpoint, the depth of the second container auxiliary fold line decreases from the sealing ridge toward the second endpoint, the depth of the third container auxiliary fold line decreases from the sealing ridge toward the third endpoint, and the depth of the fourth container auxiliary fold line decreases from the sealing ridge toward the fourth endpoint.

25. The container according to claim 18, wherein, The first wing has a first wing auxiliary fold line extending along the fourth direction from the second wing surface through the sealing ridge bending toward the first wing surface to the first wing surface, and in the third direction, the distance between the first wing auxiliary fold line and the first container fold line and / or the second container fold line is less than or equal to 20% of the distance between the first endpoint and the second endpoint of the main container fold line; The second wing has a second wing auxiliary fold line that extends along the fourth direction from the fourth wing surface through the sealing ridge to the third wing surface, and in the third direction, the distance between the second wing auxiliary fold line and the third container fold line and / or the fourth container fold line is less than or equal to 20% of the distance between the third endpoint and the fourth endpoint of the container main fold line.

26. The container according to claim 25, wherein, The distances between the first wing auxiliary line and the first container line, the distances between the first wing auxiliary line and the second container line, the distances between the second wing auxiliary line and the third container line, and the distances between the second wing auxiliary line and the fourth container line are all equal.

27. The container according to claim 25, wherein, The first container auxiliary fold line partially overlaps with or is spaced apart from the first wing auxiliary fold line; The third container auxiliary fold line partially overlaps with or is spaced apart from the second wing auxiliary fold line.

28. The container according to claim 25, wherein, The first wing auxiliary fold line and the second wing auxiliary fold line are pressure grooves; The radius of curvature of each of the first wing auxiliary broken line and the second wing auxiliary broken line is 0.2-2.5 mm.

29. The container according to claim 25, wherein, The first wing auxiliary fold line and the second wing auxiliary fold line are pressure grooves; The depth of each of the first wing auxiliary fold line and the second wing auxiliary fold line is 0.1-2.5 mm.

30. The container according to claim 25, wherein, The first ear wing has a third wing auxiliary fold line, located on the back side of the first ear wing opposite to the surface of the first wing and corresponding to the first wing auxiliary fold line; The second ear wing has a fourth wing auxiliary fold line, located on the back side of the second ear wing opposite to the surface of the second wing and corresponding to the second wing auxiliary fold line.

31. A method for manufacturing a container as described in any one of claims 18-30: comprising: A first wing auxiliary fold line is formed on the first wing, wherein the first wing auxiliary fold line extends from the second wing surface to the first wing surface along the fourth direction via the sealing ridge that bends toward the first wing surface, and in the third direction, the distance between the first wing auxiliary fold line and the first container fold line and / or the second container fold line is less than or equal to 20% of the distance between the first endpoint and the second endpoint of the main container fold line; A second wing auxiliary fold line is formed on the second wing, wherein the second wing auxiliary fold line extends from the fourth wing surface to the third wing surface via the sealing ridge along the fourth direction, and in the third direction, the distance between the second wing auxiliary fold line and the third container fold line and / or the fourth container fold line is less than or equal to 20% of the distance between the third endpoint and the fourth endpoint of the container main fold line.

32. The manufacturing method according to claim 31, wherein, After forming the first wing auxiliary line and the second wing auxiliary line, the method further includes: Heating is applied to a first position and a second position. The first position is located at the intersection of the first container sub-surface, the first wing surface, and the sealing ridge. The second position is located at the intersection of the first container sub-surface, the third wing surface, and the sealing ridge. The sealing ridge is bent and attached to the surface of the first container; and The first and second ear wings are bent and attached to the surface of the first container.

33. The manufacturing method according to claim 32, wherein, The first and second positions are heated to a temperature of 150ºC-210ºC.

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