Three-dimensional bag

Abstract

The utility model provides a three-dimensional bag which is characterized in that a linearly extending main notch is formed in one side, close to an opening, of the side wall of a bag body of the three-dimensional bag, and the free end of a handle penetrates through the main notch from one side of the side wall of the bag body, extends to the other side of the side wall of the bag body and is connected with the surface of the other side of the side wall of the bag body. When viewed in the direction perpendicular to the side wall, the linear extension length of the main notch is larger than the linear distance between the end points of the two sides of the main notch, and auxiliary notches extending linearly are formed in the end points of the two sides of the main notch respectively. Each auxiliary notch extends from the end point of the corresponding side in the direction bent and crossed with the extending direction of the main notch at the end point, the two auxiliary notches extend in the direction away from each other, the risk that the main notch connected with the lifting handle is torn is effectively reduced through the auxiliary notches, the yield of the three-dimensional bag is increased, and the service life of the three-dimensional bag is prolonged. And the assembly stability between the handle and the bag body can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the packaging technical field, especially a kind of three-dimensional bag. BACKGROUND

[0002] Three-dimensional bag is a common packaging container, usually with two handles connected with bag body, it is convenient to carry by hand, and the handle of three-dimensional bag as the main part of carrying, the connecting strength between it and bag body directly determines the load capacity of three-dimensional bag. High-strength connection can ensure that three-dimensional bag is not easy to break or fall off when loading heavy objects, so as to meet the needs in various use scenarios. Therefore, the connecting strength between the handle and the bag body of three-dimensional bag is directly related to the performance, safety and user experience of paper bag.

[0003] In the prior art, a cut is usually provided on the side wall of the bag body, and the free end of the handle is inserted into the cut from the outside of the bag body and connected with the inner surface of the side wall of the bag body. However, when installing the handle, the free end of the handle needs to be grabbed and pulled into the cut by a grabbing component or the hand of a worker, or the end of the handle needs to be grabbed and inserted into the cut by the grabbing component or the hand of the worker. That is, no matter what assembly method is used, the cut needs to be passed through the handle and other objects (grabbing component or hand) during the assembly of the handle, which can easily tear the cut on the bag body. If the cut is enlarged to facilitate the passage of other objects, the stability of the handle during normal assembly will be affected. SUMMARY

[0004] The utility model aims to solve the technical problem that the handle of the three-dimensional bag in the prior art is easily torn during assembly, and the stability of the handle during normal assembly is affected if the cut is enlarged.

[0005] To solve the above technical problems, the embodiment of the utility model discloses a three-dimensional bag, which comprises a bag body having a receiving cavity, and a handle arranged at an opening of the bag body.

[0006] The side wall of the bag body is formed with a linearly extending main cut on the side close to the opening, and the free end of the handle is inserted into the main cut from one side of the side wall of the bag body and extends to the other side, and is connected with the surface of the other side of the side wall of the bag body.

[0007] When viewed in a direction perpendicular to the side wall, the linear extension length of the main cut is greater than the straight line distance between the two end points of the main cut, and the two end points of the main cut are further formed with linearly extending auxiliary cuts, each auxiliary cut extends from the corresponding end point along a direction intersecting the extension direction of the main cut at the end point, and the two auxiliary cuts extend in directions away from each other.

[0008] According to the technical scheme, the bag body of the three-dimensional bag is formed with a linearly extending main cutout near the opening side, the linear extension length of the main cutout is greater than the straight line distance between the two end points of the main cutout, that is, the main cutout is not straight, but has a certain bending or broken line design, so that the main cutout can be opened to a larger through hole, so that the free end of the handle and the component clamping the handle or the human hand can pass through the main cutout, and the handle is convenient to assemble. When the through hole is opened along the extension direction of the main cutout, the shearing force acting on the end point of the main cutout is along the extension direction of the main cutout at the end point, and the auxiliary cutout arranged at the two ends of the main cutout has an extension direction different from the extension direction of the main cutout at the end point, so that the shearing force borne by the auxiliary cutout is only the component force of the shearing force on the main cutout, greatly reducing the risk of tearing of the auxiliary cutout. Moreover, the auxiliary cutout is connected with the end bending of the main cutout, that is, an inflection point is formed at the two ends of the main cutout, so that even if the handle is assembled in the main cutout, the handle will not easily deviate towards the auxiliary cutout.

[0009] Compared with the prior art, the three-dimensional bag provided by the embodiment can effectively reduce the risk of tearing of the main cutout connecting the handle without adding a reinforcing structure or changing the local material, thereby improving the yield of the three-dimensional bag and ensuring the assembly stability between the handle and the bag body.

[0010] More specifically, in an embodiment, the main cutout includes a first extension part and two second extension parts respectively extending from the two sides of the first extension part and communicating with the first extension part, and the two second extension parts are linearly extended and smoothly connected with each other at the connection part.

[0011] In the embodiment, the main cutout includes a first extension part and two second extension parts, the main cutout can be opened along the two second extension parts, so that the first extension part, the two second extension parts and the connecting line of the two second extension parts are lifted to form a region, thereby facilitating the handle and the component clamping the handle or the human hand to pass through. Moreover, the two second extension parts are smoothly connected with each other at the connection part, further reducing the stress concentration, which is helpful to disperse the stress when the handle is assembled and reduce the risk of tearing of the cutout.

[0012] In an embodiment, the extension direction of the first extension part is parallel to the direction of the straight line between the two end points of the main cutout, each second extension part is inclined relative to the extension direction of the first extension part, and the two second extension parts extend in directions away from each other.

[0013] The extending direction of the first extending part is parallel to the direction of the straight line between the two end points of the main cut, so that the first extending part can extend along the natural direction of the main cut when the handle is assembled, which helps to disperse stress and reduce the risk of cut tearing. The second extending part, which is inclined relative to the extending direction of the first extending part, allows stress to be dispersed in a wider area rather than being concentrated on a single first extending part, which helps to reduce the risk of cut tearing.

[0014] Specifically, in one embodiment, the extending direction of each auxiliary cut intersects at an acute angle with the extending direction of the second extending part at the end point of the corresponding side; and, when viewed along a direction perpendicular to the side wall, each auxiliary cut and the second extending part of the corresponding side as a whole form an acute-angled "V" shape.

[0015] In another embodiment, the extending direction of each auxiliary cut is parallel to the extending direction of the first extending part, the extending direction of each auxiliary cut intersects at an obtuse angle with the extending direction of the second extending part at the end point of the corresponding side; and, when viewed along a direction perpendicular to the side wall, each auxiliary cut and the second extending part of the corresponding side as a whole form an obtuse-angled "V" shape.

[0016] In still another embodiment, the extending direction of each auxiliary cut intersects at an obtuse angle with the extending direction of the second extending part at the end point of the corresponding side; and, when viewed along a direction perpendicular to the side wall, each auxiliary cut and the extending line of the second extending part at the end point of the corresponding side as a whole form an acute-angled "V" shape. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structural schematic diagram of a three-dimensional bag provided for an embodiment of the present application;

[0018] Figure 2 A partial schematic diagram of a main cut and an auxiliary cut (the auxiliary cut and the second extending part as a whole form an acute-angled "V" shape);

[0019] Figure 3 Another partial schematic diagram of a main cut and an auxiliary cut (the auxiliary cut is parallel to the first extending part, and the auxiliary cut and the second extending part as a whole form an obtuse-angled "V" shape);

[0020] Figure 4 Another partial schematic diagram of a main cut and an auxiliary cut (the auxiliary cut and the extending line of the second extending part as a whole form an acute-angled "V" shape);

[0021] Figure 5 Another partial schematic diagram of a main cut and an auxiliary cut (the auxiliary cut is arranged in an arc shape);

[0022] Figure 6Another partial view of the main cut and the auxiliary cut (the second extension is arranged in an arc shape);

[0023] Figure 7 Another partial view of the main cut and the auxiliary cut (the main cut is arranged in an arc shape as a whole);

[0024] Figure 8 A structure view of a three-dimensional bag (a bag opening folding edge is arranged) provided by an embodiment of the utility model;

[0025] Figure 9 A structure view of a three-dimensional bag (a handle reinforcing member is arranged) provided by an embodiment of the utility model.

[0026] Explanation of reference signs:

[0027] 10, three-dimensional bag;

[0028] 100, bag body;

[0029] 110, main cut; 111, first extension; 112, second extension;

[0030] 120, auxiliary cut;

[0031] 200, handle;

[0032] 101, front surface; 102, partial side surface; 103, bottom surface; 104, bag opening folding edge; 105, handle reinforcing member. DETAILED DESCRIPTION

[0033] As proposed in the background art, the handle of the three-dimensional bag in the prior art is extremely easy to tear the cut on the bag body during assembly, and if the cut is increased, the stability during normal assembly of the handle will be affected. Therefore, the utility model provides a three-dimensional bag, a linearly extended main cut is formed on the side wall of the bag body close to the opening side, the free end of the handle passes through the main cut from one side of the side wall of the bag body and extends to the other side, and is connected with the surface of the other side of the side wall of the bag body. When viewed along the direction perpendicular to the side wall, the linear extension length of the main cut is greater than the straight line distance between the two end points of the main cut, and the two end points of the main cut further respectively form linearly extended auxiliary cuts, each auxiliary cut extends from the corresponding one side end point along a direction intersecting the extension direction of the main cut at the end point, and the two auxiliary cuts extend in directions away from each other, the auxiliary cut effectively reduces the risk of tearing the main cut connected with the handle, not only improves the yield of the three-dimensional bag, but also ensures the assembly stability between the handle and the bag body.

[0034] In order to make the purpose, technical scheme and advantages of the utility model more clear, the embodiments of the utility model will be described in further detail below with reference to the drawings.

[0035] As Figure 1 shown, the three-dimensional bag 10 comprises a bag body 100 having a containing cavity, and a handle 200 arranged at the opening of the bag body 100.

[0036] Wherein, the side wall of the bag body 100 is formed with a linearly extending main cut 110 near the opening side, and the free end of the handle 200 passes through the main cut 110 from one side of the side wall of the bag body 100 and extends to the other side, and is connected with the surface of the other side of the side wall of the bag body 100. It should be noted that the bag body 100 comprises a bottom surface 103 and a pair of front surfaces 101 connected with the bottom surface 103, and each front surface 101 is formed with a pair of sub-surfaces 102 on both sides in the length direction, and the sub-surfaces 102 on the same side in the width direction are folded and overlapped towards each other, thereby forming the side surface of the bag body 100, and the side surface is connected with the bottom surface 103 through the bottom surface 103 connecting portion, and further, the pair of front surfaces 101, the pair of side surfaces and the bottom surface 103 located at the bottom form a containing cavity having an opening, and the handle 200 can be connected with the pair of front surfaces 101, of course, the specific structure of the bag body 100 is not limited in this embodiment.

[0037] Further, the free end of the handle 200 can be fixedly connected with the corresponding surface of the side wall, that is, as Figure 1 shown, the free end of the handle 200 can pass through the main cut 110 from the outside of the bag body 100 and extend to the inside, and be connected with the inner surface of the side wall of the bag body 100. Of course, the free end of the handle 200 can also pass through the main cut 110 from the inside of the bag body 100 and extend to the outside, and be connected with the outer surface of the side wall of the bag body 100.

[0038] Regarding the connection mode of the handle 200 and the bag body 100, in one embodiment, the bag body 100 and the handle 200 are both made of non-woven fabric material, and the side wall and the free end of the handle 200 are connected by heat sealing, or the bag body 100 and the handle 200 are made of paper material, and the side wall and the free end of the handle 200 are connected by adhesive, and the present application does not make specific limitation.

[0039] Further, as Figure 2 shown, when viewed along the direction perpendicular to the side wall, the linear extension length of the main cut 110 is greater than the straight line distance between the two end points of the main cut 110, and the two end points of the main cut 110 are further formed with linearly extending auxiliary cuts 120, each auxiliary cut 120 extends from the end point on the corresponding side along the direction intersecting the extension direction of the main cut 110 at the end point, and the two auxiliary cuts 120 extend in directions away from each other.

[0040] In the embodiment, the bag body 100 of the three-dimensional bag 10 is formed with a linearly extending main cut 110 near the opening side, and the linearly extending length of the main cut 110 is greater than the straight line distance between the two end points of the main cut 110, that is, the main cut 110 is not straight, but has a certain bending or broken line design, so that the main cut 110 can open a larger through hole, thereby facilitating the free end of the handle 200 and the components or human hands clamping the handle 200 to pass through the main cut 110, and facilitating the assembly of the handle 200. And when the through hole is opened along the extension direction of the main cut 110, the shearing force acting on the end point of the main cut 110 is along the extension direction of the main cut 110 at the end point, and the auxiliary cut 120 arranged at both ends of the main cut 110 has an extension direction different from the extension direction of the main cut 110 at the end point, so that the shearing force borne by the auxiliary cut 120 is only the component force of the shearing force on the main cut 110, greatly reducing the risk of tearing of the auxiliary cut 120. And since the auxiliary cut 120 is connected with the end bending of the main cut 110 in cross, that is, a turning point is formed at both ends of the main cut 110, even if the handle 200 is assembled in the main cut 110, it will not easily deviate towards the auxiliary cut 120.

[0041] Compared with the prior art, the three-dimensional bag 10 provided by the embodiment can effectively reduce the risk of tearing of the main cut 110 connecting the handle 200 through the auxiliary cut 120 without adding reinforcing structures or changing local materials, not only improving the yield of the three-dimensional bag 10, but also ensuring the assembly stability between the handle 200 and the bag body 100.

[0042] More specifically, as shown in Figure 2 In one embodiment, the main cut 110 includes a first extension part 111 and two second extension parts 112 respectively extending from both sides of the first extension part 111 and communicating with the first extension part 111, and the two second extension parts 112 are linearly extended with the first extension part 111 and smoothly transition at the connection part.

[0043] In the present embodiment, the main cut 110 includes a first extension 111 and two second extensions 112, and the main cut 110 can be opened along the two second extensions 112 on the sides, so as to lift the first extension 111, the two second extensions 112 and the end connecting line of the two second extensions 112 to form a region, thereby facilitating the passage of the handle 200 and the components (such as a hook plate or a clamping jaw) clamping the handle 200 or the human hand holding the handle 200. Moreover, the two second extensions 112 and the first extension 111 are smoothly connected to each other at the connecting position, further reducing the stress concentration, helping to disperse the stress during assembly of the handle 200, and reducing the risk of cut tearing.

[0044] More specifically, in an embodiment, as shown in Figure 2 the extension direction of the first extension 111 is parallel to the direction of the straight line between the two end points of the main cut 110, and each second extension 112 is inclined relative to the extension direction of the first extension 111 and the two second extensions 112 extend in directions away from each other.

[0045] The extension direction of the first extension 111 is parallel to the direction of the straight line between the two end points of the main cut 110, so that the first extension 111 can extend along the natural direction of the main cut 110 during assembly of the handle 200, helping to disperse the stress and reduce the risk of cut tearing. The second extension 112 inclined relative to the extension direction of the first extension 111 allows the stress to be dispersed in a wider area rather than concentrated on a single first extension 111, which helps to reduce the risk of cut tearing.

[0046] More specifically, the two second extensions 112 and the two auxiliary cuts 120 are symmetrically arranged relative to the midpoint of the first extension 111, so as to ensure that the free end of the handle 200 is not easily misaligned after passing through the main cut 110, thereby improving the assembly stability between the handle 200 and the bag body 100.

[0047] The structure of the auxiliary cut 120 will be described below in combination with the main cut 110 described above.

[0048] Specifically, as shown in Figure 2 in an embodiment, the extension direction of each auxiliary cut 120 intersects the extension direction of the corresponding second extension 112 at the end point at an acute angle; and when viewed in a direction perpendicular to the side wall, each auxiliary cut 120 and the corresponding second extension 112 on the side as a whole form a "V" shape with an acute angle a.

[0049] In this embodiment, when the panel on the bag body 100 is lifted along the main cut 110, since the auxiliary cut 120 and the second extension 112 on the corresponding side form a "V" shape with an acute angle a, that is, the auxiliary cut 120 is opposite to the direction of lifting the panel, the shear force along the direction of the second extension 112 has only a small component towards the auxiliary cut 120, greatly reducing the risk of tearing the cut structure.

[0050] As shown in another embodiment, the extension direction of each auxiliary cut 120 is parallel to the extension direction of the first extension 111, and the extension direction of each auxiliary cut 120 and the extension direction of the second extension 112 on the corresponding side at the end point form an obtuse angle. Figure 3

[0051] In this embodiment, when the panel on the bag body 100 is lifted along the main cut 110, since the extension direction of the auxiliary cut 120 is parallel to the extension direction of the first extension 111, the area of the through hole opened by the main cut 110 is neither reduced nor increased under the premise of preventing tearing, ensuring that the area of the through hole opened by the main cut 110 accurately meets the design expectations.

[0052] As shown in another embodiment, the extension direction of each auxiliary cut 120 is parallel to the extension direction of the first extension 111, and the extension direction of each auxiliary cut 120 and the extension direction of the second extension 112 on the corresponding side at the end point form an obtuse angle. Figure 4 Figure 4

[0053] In this embodiment, when the panel on the bag body 100 is lifted along the main cut 110, the auxiliary cut 120 and the extension line of the second extension 112 on the corresponding side at the end point form a "V" shape with an acute angle c, which can increase the area of the through hole opened by the main cut 110 under the premise of preventing tearing, reduce the difficulty of the free end of the handle 200 and the structure (such as a hook plate or a clamping jaw) clamping the handle 200 to pass through, and simplify the production difficulty.

[0054] In the above three embodiments, each auxiliary cut 120 extends in a straight line, and the connection between each auxiliary cut 120 and the second extension 112 on the corresponding side is smoothly connected.

[0055] ​​​Furthermore, the ratio of the extension length of the auxiliary cut 120 to the extension length of the second extension 112 is in the range of 1:3 to 8. For example, the ratio of the extension length of the auxiliary cut 120 to the extension length of the second extension 112 can be 1:3, 1:4, 1:4.5, 1:6, 1:8 or any other ratio within the above range, to ensure that the auxiliary cut 120 can play a better role in preventing tearing.

[0056] If the ratio of the length of the auxiliary cut 120 to the extension length of the second extension 112 is greater than 1:3, when lifting the sheet material on the bag body 100 along the main cut 110, the sheet material may be lifted directly along the auxiliary cut 120, causing the shearing force to extend along the extension direction of the auxiliary cut 120, making the auxiliary cut 120 ineffective and unable to play a tear-proof role. If the ratio of the length of the auxiliary cut 120 to the extension length of the second extension 112 is less than 1:8, since the length of the auxiliary cut 120 is smaller than the length of the first extension 111, it cannot play a role in dispersing stress, and the tear-proof effect is poor.

[0057] Of course, in other alternative embodiments, such as Figure 5 As shown, each auxiliary cut 120 extends in an arc shape, and the ends of each auxiliary cut 120 and the corresponding second extension 112 on one side are tangentially connected to each other. The arc-shaped auxiliary cut 120 can better disperse stress and reduce the risk of tearing.

[0058] Furthermore, the shape of the main incision 110 is not limited to the structure in the above embodiments. In another embodiment, such as... Figure 6 As shown, the main incision 110 also includes a first extension 111 and two second extensions 112. Unlike the above embodiment, in this embodiment, when viewed along the direction perpendicular to the sidewall, the first extension 111 is straight, and the two second extensions 112 are arc-shaped protrusions that are opposite to each other.

[0059] In this embodiment, the two second extensions 112 are arranged in a counter-protruding arc shape, increasing the area enclosed by the line connecting the ends of the two second extensions 112, the first extension 111, and the two second extensions 112. This allows for greater lifting of the sheet material along the two second extensions 112, and the opened through-hole facilitates the passage of the handle 200 and components that hold the handle 200 (such as hooks or grippers) or the hand gripping the handle 200. It should be noted that, regarding the main cut 110 in this structure, the auxiliary cut 120 can be configured as... Figure 2 The structure shown can, of course, also be set as... Figure 3 or Figure 4 The structure in this embodiment is not limited thereto.

[0060] Furthermore, the structure of the main incision 110 is not limited to the above-described embodiments. In an alternative embodiment, such as... Figure 7 As shown, the main cut 110 is configured as an arc shape. This arc-shaped main cut 110 can cooperate with the auxiliary cuts 120 in the above embodiments. For example, two auxiliary cuts 120 are arc-shaped and tangentially connected to the corresponding endpoints of the main cut 110. Of course, the two auxiliary cuts 120 can also be configured as straight lines extending away from each other and smoothly transitioning to the corresponding endpoints. This embodiment does not specifically limit this.

[0061] The specific extension lengths of the main cut 110 and the auxiliary cut 120 are designed based on the width of the free end of the handle 200. For example, looking along the height direction of the bag body 100, the length of the first extension 111 can be 23 mm, and the projection length of the second extension 112 on the extension line of the first extension 111 is 3.5 mm, that is, the length of the through hole opened by the main cut 110 in the length direction is 30 mm; or when the second extension 112 is set as an arc shape, its radius is set to 8 mm. Of course, those skilled in the art can design the specific size parameters of each cut according to the actual situation and specific needs, and this embodiment does not make specific limitations on this.

[0062] Furthermore, the first extension 111 of the main cut 110 can extend in a direction parallel to the edge of the bag opening, and the distance between the main cut 110 and the edge of the bag opening can be 5 mm to 30 mm, which is not specifically limited in this embodiment.

[0063] Furthermore, the opening of the stand-up pouch 10 is formed directly from the top of the side wall of the pouch body 100. It is made of the same material as the side wall of the pouch body 100 and opens outwards, resulting in low strength. Since objects enter and exit through this opening, the opening of the stand-up pouch 10 is a very vulnerable part. Therefore, if... Figure 8 As shown, in one embodiment, the periphery of the opening of the bag body 100 is formed with a bag opening fold 104 that folds toward the inside of the receiving cavity. The bag opening fold 104 continuously surrounds the opening of the bag body 100, thereby reinforcing the bag opening.

[0064] It should be noted that when the bag opening hem 104 is set, the cut structure (the main cut 110 and the auxiliary cut 120 are set on the bag opening hem 104) for the free end of the handle 200 to pass through. Specifically, the bag opening hem 104 on the opposite sides (for example, a pair of front surfaces 101) of the opening of the bag body 100, at positions corresponding to the free end of the handle 200, is respectively formed with a cut structure (the main cut 110 and the auxiliary cut 120 on both sides), and the free end of each handle 200 extends into the corresponding main cut 110 from the inner side of the opening of the bag body 100, and extends to between the bending part of the bag body 100 and the front surface 101. It should be noted that the free end of the handle 200 can be connected only to the inner surface of the front surface 101, or can be fixed to both the inner surface of the front surface 101 and the bag opening hem 104, and the present embodiment does not make specific limitations thereon.

[0065] Further, in order to strengthen the connection strength of the handle 200 and the bag body 100, as shown in an embodiment, the three-dimensional bag 10 is provided with a handle reinforcing piece 105 penetrating through the free end of the handle 200 and the side wall. Figure 9

[0066] When the three-dimensional bag 10 is also provided with the bag opening hem 104, the handle reinforcing piece 105 penetrates through the free end of the handle 200 and the side wall and the bag opening hem 104 in sequence, and the handle reinforcing piece 105 limits the deformation of the materials of the side wall of the bag body 100 and the free end of the handle 200 under the action of tension, thereby reducing the risk of tearing. Therefore, the three-dimensional bag 10 improves the stress condition between the side wall of the bag body 100 and the free end of the handle 200 by setting the handle 200 reinforcing piece at the position where the handle 200 is fixed to the bag body 100, thereby reducing the risk of tearing between the two.

[0067] As to the specific structure of the handle reinforcing piece 105, it can be a rivet, a buckle, etc., and those skilled in the art can design it according to the actual situation and specific requirements, and the present embodiment does not make specific limitations thereon.

[0068] It should be noted that in addition to the embodiments of the present application described in the above specific embodiments, other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present description. Although the description of the present application is introduced in combination with the preferred embodiments, this does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details are included in the above description, and the present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.​

[0069] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0070] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0071] The terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0072] In the description of the present embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0073] Although the utility model has been illustrated and described by referring to some preferred embodiments of the utility model, those skilled in the art should understand that the above content is a further detailed description of the utility model combined with specific embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. Those skilled in the art can make various changes in form and details, including making a number of simple inferences or substitutions, without departing from the spirit and scope of the utility model.

Claims

1. A three-dimensional bag, characterized in that, It includes a bag body having a cavity, and a handle disposed at the opening of the bag body; wherein, The sidewall of the bag has a linearly extending main slit near the opening. The free end of the handle passes through the main slit from one side of the sidewall and extends to the other side, connecting with the other surface of the sidewall. When viewed along a direction perpendicular to the sidewall, the linear extension length of the main incision is greater than the straight-line distance between the two endpoints of the main incision. Furthermore, each of the two endpoints of the main incision is also formed with a linearly extending auxiliary incision. Each auxiliary incision extends from the endpoint of the corresponding side in a direction that bends and intersects with the extension direction of the main incision at that endpoint, and the two auxiliary incisions extend in directions that are opposite to each other.

2. The three-dimensional bag as described in claim 1, characterized in that, The main incision includes a first extension and two second extensions that extend from both sides of the first extension and communicate with the first extension. The two second extensions extend linearly with the first extension and their connection points are smoothly transitioned.

3. The three-dimensional bag as described in claim 2, characterized in that, in, The first extension extends in a direction parallel to the straight line between the two endpoints of the main incision. Each second extension is inclined relative to the extension direction of the first extension, and the two second extensions extend in directions opposite to each other.

4. The three-dimensional bag as described in claim 3, characterized in that, in, The extension direction of each of the auxiliary cuts intersects the extension direction of the second extension on the corresponding side at that endpoint at an acute angle; and when viewed along a direction perpendicular to the sidewall, each of the auxiliary cuts and the second extension on the corresponding side together form a "V" shape with an acute interior angle.

5. The three-dimensional bag as described in claim 3, characterized in that, in, The extension direction of each auxiliary incision is parallel to the extension direction of the first extension, and the extension direction of each auxiliary incision intersects the extension direction of the second extension on the corresponding side at that endpoint at an obtuse angle; and when viewed along a direction perpendicular to the sidewall, each auxiliary incision and the second extension on the corresponding side together form a "V" shape with an obtuse interior angle.

6. The three-dimensional bag as described in claim 3, characterized in that, in, The extension direction of each of the auxiliary incisions intersects the extension direction of the second extension on the corresponding side at that endpoint at an obtuse angle; and when viewed along a direction perpendicular to the sidewall, each of the auxiliary incisions and the extension line of the second extension on the corresponding side at that endpoint together form a "V" shape with an acute interior angle.

7. The three-dimensional bag as described in any one of claims 4 to 6, characterized in that, Each of the auxiliary incisions extends in a straight line, and the connection between each auxiliary incision and the second extension on the corresponding side is a smooth transition; or, Each of the auxiliary cuts extends in an arc shape, and each of the auxiliary cuts and the end of the second extension on the corresponding side are tangentially connected to each other.

8. The three-dimensional bag as described in claim 7, characterized in that, The ratio of the extension length of the auxiliary incision to the extension length of the second extension is in the range of 1:3 to 8.

9. The three-dimensional bag as described in claim 7, characterized in that, The two second extensions and the two auxiliary cuts are arranged symmetrically with respect to the midpoint of the first extension.

10. The three-dimensional bag as described in claim 2, characterized in that, When viewed along a direction perpendicular to the sidewall, the first extension is straight; and... The two second extensions are either straight lines facing away from each other, or protruding arcs facing away from each other.

11. The three-dimensional bag as described in claim 1, characterized in that, The free end of the handle is fixedly connected to the corresponding surface of the side wall; wherein, Both the bag body and the handle are made of non-woven fabric, and the sidewalls are heat-sealed to the free end of the handle; or, The bag body and the handle are made of paper material, and the side wall is glued to the free end of the handle.

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