Easily-torn sealing film and package

Abstract

The utility model provides an easy-to-tear sealing film and a package, and belongs to the technical field of food packaging. The easy-to-tear sealing film comprises a heat sealing layer and a blocking layer, the heat sealing layer comprises a connecting part used for being connected with the packaging opening and a separating part selectively separated from the connecting part. At least a partial region of the partition portion is separated from the connecting portion to form an opening. The innermost side edge of the projection of the connecting part on the plane where the packaging opening is located is defined as a first inner diameter; the edge of the innermost side of the packaging opening is defined as a second inner diameter; at least a partial region of the starting end of the first inner diameter corresponding to the opening is located on the inner side of the second inner diameter. At least part of the area of the first inner diameter is arranged on the inner side of the second inner diameter, the area, located on the inner side of the second inner diameter, of the connecting part is not subjected to heat sealing with the packaging opening, the needed separating force is smaller, and therefore the blocking layer can be separated from the connecting part at the first inner diameter along with the separating part through small force to form the opening.

Description

Technical Field

[0001] The utility model relates to the technical field of food packaging, in particular to an easy-tear sealing film and packaging. Background Art

[0002] Traditionally, yogurt is usually packaged in glass or ceramic bottles and jars. With the continuous improvement of packaging technology, plastic, composite flexible packaging materials and containers have occupied a dominant position in dairy product packaging.

[0003] As for the common yogurt packaging currently, the film structure is covered on the packaging opening by heat sealing. However, due to the strong heat sealing strength, the bonding force between the sealing film and the packaging opening is relatively large, and it is difficult to effectively separate the sealing film from the packaging opening under the condition of applying a small force.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide an easy-tear sealing film and packaging to solve or improve the above technical problems.

[0006] The utility model can be implemented like this:

[0007] In a first aspect, the utility model provides an easy-tear sealing film, which includes a heat-sealing layer and a barrier layer connected to one side surface of the heat-sealing layer;

[0008] The heat-sealing layer includes a connecting portion for connecting with the package opening, and the heat-sealing layer also includes a partition located inside the connecting portion, and the partition and the connecting portion can be selectively separated; when the easy-tear sealing film is opened, at least a part of the partition is separated from the connecting portion to form an opening;

[0009] The innermost edge of the projection of the connecting portion on the plane where the package opening is located is defined as the first inner diameter; the innermost edge of the package opening is defined as the second inner diameter;

[0010] At least a partial area of the starting end of the corresponding opening of the first inner diameter is located inside the second inner diameter.

[0011] In an optional embodiment, the area where the connecting portion is connected to the packaging opening is a heat-sealed area, and the width of the heat-sealed area is 0.2 mm to 0.9 mm.

[0012] In an optional embodiment, the first inner diameter includes a first region segment toward the starting end of the opening and a second region segment away from the starting end of the opening;

[0013] The longest distance between the first region and the second inner diameter is greater than the longest distance between the second region and the second inner diameter.

[0014] In an optional embodiment, the minimum width of the first inner diameter is 1.7 mm to 148 mm.

[0015] In an optional embodiment, the partition is in a closed shape; when the easy-tear sealing film is opened, the partition is completely separated from the connecting part;

[0016] Alternatively, the partition has a notch; when the easy-tear sealing film is opened, the partition is connected to the connecting part at the notch.

[0017] In an optional embodiment, the partition includes a transition zone and a main body zone connected in sequence; the transition zone is located on a side of the main body zone close to the starting end of the opening; and the curvature radius of the main body zone is smaller than the curvature radius of the transition zone.

[0018] In an optional embodiment, the barrier layer further has a tear guide portion, which extends outward along the edge of the package opening.

[0019] In an optional embodiment, the maximum width of the easy-tear sealing film is 1.9 mm to 150 mm.

[0020] In an optional embodiment, the easily tearable sealing film further comprises a printed protective layer, and the printed protective layer is located on a surface of the barrier layer on a side away from the heat-sealing layer.

[0021] In a second aspect, the utility model provides a package having the easy-tear sealing film of any one of the aforementioned embodiments.

[0022] The beneficial effects of the utility model include:

[0023] By arranging the heat-sealing layer into a selectively separable connecting part and a partitioning part, and arranging at least a part of the area of the starting end of the first inner diameter corresponding to the opening inside the second inner diameter, the area between the connecting part corresponding to the first inner diameter and the second inner diameter is not heat-sealed with the package opening, and the required separation force is smaller, so that the barrier layer can be separated from the connecting part with the partitioning part at the first inner diameter to form an opening with a smaller force. The above process only requires a smaller force to effectively open the easy-tear sealing film, which is convenient for eating. The package with the above easy-tear sealing film can be convenient for consumers to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of each layer in the easy-tear sealing film provided in Example 1 of the utility model;

[0026] Figure 2 Structural schematic diagram of the easy - tear sealing film combined packaging provided in Embodiment 1 of the present utility model;

[0027] Figure 3 Structural schematic diagram of the connection part of the heat - sealing layer in the easy - tear sealing film provided in Embodiment 1 of the present utility model;

[0028] Figure 4 The first structural schematic diagram of the easy - tear sealing film provided in Embodiment 1 of the present utility model;

[0029] Figure 5 The second structural schematic diagram of the easy - tear sealing film provided in Embodiment 1 of the present utility model;

[0030] Figure 6 The third structural schematic diagram of the easy - tear sealing film provided in Embodiment 1 of the present utility model;

[0031] Figure 7 The fourth structural schematic diagram of the easy - tear sealing film provided in Embodiment 1 of the present utility model.

[0032] Icon: 10 - heat - sealing layer; 11 - connection part; 111 - first region segment; 112 - second region segment; 113 - blocking region; 12 - separating part; 121 - transition region; 122 - main body region; 123 - notch; 13 - opening; 20 - barrier layer; 21 - tear - guiding line; 22 - tear - guiding part; 221 - hollowed - out region; 30 - printing protection layer; 41 - starting end; 51 - packaging body; 52 - packaging opening; 61 - first outer diameter; 62 - first inner diameter; 63 - second outer diameter; 64 - second inner diameter. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0035] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or position relationship, it is based on the orientation or position relationship shown in the figures, or the orientation or position relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, if terms such as "first", "second", "third", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0037] In addition, if terms such as "horizontal" and "vertical" are used, it does not mean that the components are required to be absolutely horizontal or hanging vertically, but they can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0038] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0039] Embodiment 1

[0040] Please refer to Figures 1 to 6 , this embodiment provides an easily tearable sealing film, which includes a heat-sealing layer 10 and a barrier layer 20 connected to one surface of the heat-sealing layer 10.

[0041] The above heat-sealing layer 10 and barrier layer 20 are arranged in a laminated manner. In the use state, the barrier layer 20 is arranged on the upper surface of the heat-sealing layer 10 (as Figure 1 shown).

[0042] The material of the heat-sealing layer 10 can be, for example, a food-grade polyester material or a polyolefin material, and the barrier layer 20 can be, for example, aluminum foil or PET aluminized or other high-barrier materials.

[0043] In some embodiments, the size of the heat-sealing layer 10 is the same as that of the barrier layer 20; in other embodiments, the size of the heat-sealing layer 10 is smaller than that of the barrier layer 20 to facilitate uncovering the film layer.

[0044] As Figure 1 , the heat-sealing layer 10 includes a connecting portion 11 for connecting with the packaging opening 52, and the heat-sealing layer 10 further includes a separating portion 12 located inside the connecting portion 11, and the separating portion 12 is selectively separable from the connecting portion 11; in the state where the tear-open seal film is uncovered, at least a part of the separating portion 12 is separated from the connecting portion 11 to form an opening 13 (as Figure 2 shown).

[0045] The above-mentioned "inside" can be understood as the inward direction on the same horizontal plane. Exemplarily, the connecting portion 11 is annular, and the separating portion 12 is located in the middle hollow part of the annulus. Among them, the annulus can be, for example, a circular ring or a square ring, and can also be other annular geometric figures.

[0046] The "selective separation" of the separating portion 12 and the connecting portion 11 can be understood as: before the film layer is uncovered, the separating portion 12 and the connecting portion 11 are in an integrally connected state; during the process of uncovering the film layer, the separating portion 12 and the connecting portion 11 are gradually separated until the separating portion 12 and the connecting portion 11 are completely separated, or the separating portion 12 and the connecting portion 11 are partially separated. The separated area between the separating portion 12 and the connecting portion 11 forms the opening 13.

[0047] The heat-sealing bonding force between the above-mentioned connecting portion 11 and the packaging opening 52 > the bonding force between the separating portion 12 and the barrier layer 20, and the heat-sealing bonding force between the connecting portion 11 and the packaging opening 52 > the bonding force between the connecting portion 11 and the barrier layer 20. During the process of uncovering the film layer, the barrier layer 20 will be separated from the connecting portion 11 along with the uncovering force applied by the user, and during the process of uncovering the barrier layer 20, when uncovering to the connection part between the connecting portion 11 and the separating portion 12, the barrier layer 20 will uncover the separating portion 12 together, so that the separating portion 12 and the connecting portion 11 are completely or partially separated. That is, whether the tear-open seal film is in the uncovered state or the sealed state, the connecting portion 11 in the heat-sealing layer 10 is always connected to the packaging opening 52, and the opening 13 is formed by the separation of the separating portion 12 and the connecting portion 11.

[0048] As Figure 3 shown, define the outermost edge of the projection of the connecting portion 11 on the plane where the packaging opening 52 is located as the first outer diameter 61, and define the innermost edge of the projection of the connecting portion 11 on the plane where the packaging opening 52 is located as the first inner diameter 62; define the outermost edge of the packaging opening 52 as the second outer diameter 63, and define the innermost edge of the packaging opening 52 as the second inner diameter 64.

[0049] At least a partial region of the starting end 41 of the corresponding opening 13 of the first inner diameter 62 is located inside the second inner diameter 64. Herein, the "starting end 41" refers to the end where the barrier layer 20 and the heat-sealing layer 10 are first separated during the uncovering process.

[0050] By arranging at least a partial region of the starting end 41 of the corresponding opening 13 of the first inner diameter 62 inside the second inner diameter 64, the region of the connecting portion 11 corresponding to the region between the first inner diameter 62 and the second inner diameter 64 is not heat-sealed to the packaging opening 52, and the required separating force is smaller. Thus, a relatively small force can be used to separate the barrier layer 20 from the connecting portion 11 with the separating portion 12 at the first inner diameter 62 to form the opening 13.

[0051] The above-mentioned first inner diameter 62 includes a first region segment 111 facing the starting end 41 of the opening 13 and a second region segment 112 away from the starting segment of the opening 13. In some embodiments, the first region segment 111 is located inside the second inner diameter 64; the second region segment 112 may be located inside the second inner diameter 64 or flush with the second inner diameter 64.

[0052] The region where the first inner diameter 62 extends inward relative to the second inner diameter 64 can also serve as a blocking region 113, which can play a certain role in blocking the contents inside the package, thus facilitating the avoidance of the direct ejection of the contents inside the package during the process of uncovering the film layer.

[0053] In some embodiments, the longest distance between the first region segment 111 and the second inner diameter 64 > the longest distance between the second region segment 112 and the second inner diameter 64.

[0054] The above-mentioned first outer diameter 61 can be flush with the second outer diameter 63, or the first outer diameter 61 can be located between the second outer diameter 63 and the second inner diameter 64, or the first outer diameter 61 can be located outside the second outer diameter 63.

[0055] The region where the connecting portion 11 is connected to the packaging opening 52 is a heat-sealing region. When the first outer diameter 61 is flush with the second outer diameter 63, the heat-sealing region can be understood as the region between the first outer diameter 61 (or the second outer diameter 63) and the second inner diameter 64; when the first outer diameter 61 is located between the second outer diameter 63 and the second inner diameter 64, the heat-sealing region can be understood as the region between the first outer diameter 61 and the second inner diameter 64; when the first outer diameter 61 is located outside the second outer diameter 63, the heat-sealing region can be understood as the region between the second outer diameter 63 and the second inner diameter 64.

[0056] In some embodiments, the width of the heat-sealing area can be from 0.2 mm to 0.9 mm, such as 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm or 0.9 mm, etc., or can also be other values within the range of 0.2 mm to 0.9 mm. In some relatively typical embodiments, the width of the heat-sealing area can be 0.5 mm.

[0057] The width of the above-mentioned heat-sealing area is suitable for the packaging of most yogurt-like contents. Within the range of this heat-sealing area, the force application situation and the uncovering effect are relatively well-matched. If the heat-sealing area is too wide, a greater force needs to be applied to separate the connecting part 11 between the barrier layer 20 and the heat-sealing layer 10.

[0058] It should be noted that in other embodiments, the width of the above-mentioned heat-sealing area can be adjusted adaptively to the width of the packaging opening 52.

[0059] In some embodiments, such as Figure 4 and Figure 5 shown, the separating part 12 is in a closed shape. When the easy-tear seal film is in the uncovered state, the separating part 12 is completely separated from the connecting part 11. That is, during the process of applying force to the barrier layer 20, the barrier layer 20 with the attached separating part 12 is completely uncovered and is completely separated from the packaging opening 52.

[0060] The specific form of the above-mentioned closed shape is not limited. For example, it can be a closed circle, semicircle, square or sector, etc. Exemplarily, the circumferential edge of the separating part 12 can be a curve, a straight line, or a combination of a curve and a straight line, etc.

[0061] In some other embodiments, such as Figure 6 shown, the separating part 12 has a notch 123. When the easy-tear seal film is in the uncovered state, the separating part 12 is connected to the connecting part 11 at the notch 123. That is, during the process of applying force to the barrier layer 20, the barrier layer 20 with the attached separating part 12 starts to be uncovered from the starting end 41 of the opening 13 until it reaches the notch 123. At this time, the easy-tear seal film is partially separated from the packaging opening 52. This method facilitates the recycling of the entire packaging. The above-mentioned notch 123 can be set according to specific circumstances, including the specific setting position and size of the notch 123, which are not limited.

[0062] In this embodiment, the shapes of the connecting part 11 and the separating part 12 are not limited. Exemplarily but not restrictively, they can independently be a circle, square, triangle, other polygons or irregular shapes, etc.

[0063] In some embodiments, such as Figure 4 、 Figure 5 and Figure 6As shown, the partition 12 includes a transition zone 121 and a main body zone 122 connected in sequence. The transition zone 121 is located on the side of the main body zone 122 close to the starting end 41 of the opening 13. In some more specific embodiments, the curvature radius of the main body zone 122 is smaller than the curvature radius of the transition zone 121. A chamfer may be provided at the connection between the transition zone 121 and the main body zone 122. The above arrangement is more conducive to the partition 12 being opened together with the barrier layer 20 during the opening process. In addition, the partition 12 may also not contain a transition zone, such as Figure 7 shown.

[0064] In this embodiment, the barrier layer 20 is provided with a tear guide line 21 (eg, Figure 2 , Figures 4 to 7 As shown in the figure, for example, the tear guide line 21 can be arranged corresponding to the edge of the packaging opening 52. By arranging the tear guide line 21, it is convenient for the user to apply force from here to separate the barrier layer 20 from the heat sealing layer 10.

[0065] The shape of the tear guide line 21 is not limited, and may include, by way of example but not limitation, a wave shape or a broken line shape, etc. When the tear guide line 21 is in a wave shape, it may be in a continuous and uniform wave shape, and the radius of curvature of the arc corresponding to each wave may be the same or different. When the tear guide line 21 is in a broken line shape, the broken line may be in a sawtooth shape, and the shape of the sawtooth may be, for example, a triangle or a square, etc. In addition, the tear guide line 21 may also include a wave-shaped area and a broken line-shaped area at the same time, and the wave-shaped area and the broken line-shaped area may be arranged in a cross-interval arrangement, or may be arranged respectively and continuously (that is, one side is in a continuous wave shape, and the other side is in a continuous broken line shape).

[0066] In some embodiments, the number of tear guide lines 21 is only one (eg Figure 2 In some other embodiments, the tear guide line 21 is multiple (such as Figures 4 to 7 As shown in FIG. 1 , a plurality of tear guide lines 21 are sequentially arranged at intervals along the opening direction of the easy-tear sealing film. For example, when the number of the tear guide lines 21 is multiple, it can be 2, 3 or more.

[0067] Furthermore, the barrier layer 20 of the easy-tear seal film also has a tear guide 22, which extends outward along the edge of the package opening 52. It can also be understood that the barrier layer 20 includes a main body and a tear guide 22, the main body is used to cover the package opening 52, and the tear guide 22 extends outward from the main body. The provision of the tear guide 22 makes it easy for the user to grasp or pinch it, which is conducive to further applying force to peel off the film layer.

[0068] The shape of the main body can be adaptively set according to the shape of the packaging opening 52. For example, if the packaging opening 52 is circular, the main body of the barrier layer 20 can also be circular; if the packaging opening 52 is square, the main body of the barrier layer 20 can also be square.

[0069] In some embodiments, the barrier layer 20 is in the shape of a water droplet, so that the entire tearable seal film also presents a water droplet shape. In addition, the shapes of the barrier layer 20 and the tearable seal film can be adjusted as needed, and the present application does not make specific limitations thereon.

[0070] In some embodiments, the tear guiding portion 22 is further provided with a hollowed-out area 221 (as Figure 5 and Figure 6 shown). The hollowed-out area 221 can be located in the middle area of the tear guiding portion 22 by way of example but not limitation, so as to evenly disperse the force applied during the uncovering process, so as to avoid excessive force causing the tear guiding portion 22 to break. The size of the above-mentioned hollowed-out area 221 is preferably at least large enough for the fingertip part of the finger to hold, so as to avoid the problem that the hand slips from the tearable seal film during the film uncovering process due to the smoothness of the film layer when applying force.

[0071] Among them, the shape of the hollowed-out area 221 is not limited, and can be, for example, circular, oval or square, etc. In some relatively typical embodiments, the hollowed-out area 221 is a circle adapted to the finger.

[0072] In some embodiments, the tearable seal film may further include a printed protective layer 30 (as Figure 1 shown), and the printed protective layer 30 is located on the surface of the barrier layer 20 on the side away from the heat-sealing layer 10.

[0073] The size of the printed protective layer 30 can be the same as that of the barrier layer 20, or smaller than the barrier layer 20.

[0074] In some specific embodiments, the tearable seal film can be set with reference to the following method:

[0075] Method 1: The tearable seal film is composed of a heat-sealing layer 10, a barrier layer 20 and a printed protective layer 30 that are stacked and connected in sequence from bottom to top.

[0076] The barrier layer 20 includes a circular main body portion and a tear guiding portion 22 that extends outwards from a partial area of the main body portion. The tear guiding portion 22 and the main body portion together make the barrier layer 20 as a whole in the shape of a water droplet. Correspondingly, the outer diameter of the main body portion can be 90 mm to 100 mm (such as 95.3 mm ± 0.5), and the longest dimension of the barrier layer 20 can be 102 mm to 112 mm (such as 107 mm ± 0.5 mm). The area of the barrier layer 20 corresponding to the starting end 41 of the opening 13 is provided with 2 tear guiding lines 21 that are sequentially spaced along the uncovering direction of the tearable seal film. The distance between the 2 tear guiding lines 21 can be 10 mm to 15 mm (such as 12.2 mm ± 1.5 mm), and each tear guiding line 21 is in a continuous and uniform wavy shape, and the radius of curvature of the arc corresponding to each wave can be 9 mm to 11 mm (such as 10 mm ± 0.5 mm).

[0077] The heat-sealing layer 10 includes an annular connecting portion 11 and a closed-form separating portion 12 connected to the inner side of the connecting portion 11. Among them, the connecting portion 11 is heat-sealed to the packaging opening 52, the first outer diameter 61 of the connecting portion 11 is flush with the second outer diameter 63 of the packaging opening 52, and both the first region segment 111 and the second region segment 112 of the first inner diameter 62 of the connecting portion 11 are located inside the second inner diameter 64 of the packaging opening 52, and the longest distance between the first region segment 111 and the second inner diameter 64 > the longest distance between the second region segment 112 and the second inner diameter 64. The above-mentioned extended region (the region between the first inner diameter 62 and the second inner diameter 64) forms a blocking region 113. The separating portion 12 includes a transition region 121 and a main body region 122 connected in sequence. The main body region 122 is concentric with the main body portion of the barrier layer 20. The outer diameter of the main body region 122 can be 70 mm to 80 mm (such as 75.3 mm ± 0.5 mm). The transition region 121 is connected to one end of the main body region 122 corresponding to the tearing guide portion 22, and the radius of curvature of the transition region 121 is greater than the radius of curvature of the main body region 122. The maximum distance from the connection point of the transition region 121 and the main body region 122 to all the tearing guide lines 21 can be 26 mm to 32 mm (such as 29 mm ± 1.5 mm).

[0078] The size of the printed protective layer 30 is the same as that of the barrier layer 20.

[0079] Method 2: The difference between this method and Method 1 is that the separating portion 12 has a notch 123, and the width of the notch 123 can be 18 mm to 22 mm (such as 20 ± 1.5 mm).

[0080] Method 3: The difference between this method and Method 1 is that a circular hollow portion is provided in the middle region of the tearing guide portion 22.

[0081] Method 4: The difference between this method and Method 1 is that the separating portion 12 does not include the transition region 121.

[0082] Continuing from the above, in this embodiment, by setting the heat-sealing layer 10 into a selectively separable connecting portion 11 and separating portion 12, and by setting at least a part of the region of the starting end 41 of the corresponding opening 13 of the first inner diameter 62 inside the second inner diameter 64, the region between the first inner diameter 62 and the second inner diameter 64 corresponding to the connecting portion 11 is not heat-sealed to the packaging opening 52, and the required separating force is smaller. Thus, a smaller force can be used to separate the barrier layer 20 from the connecting portion 11 with the separating portion 12 at the first inner diameter 62 to form an opening 13.

[0083] Embodiment 2

[0084] The present utility model provides a packaging, and this packaging has the easily tearable sealing film in the above-mentioned Embodiment 1.

[0085] As an example, referring toFigure 2 The above-mentioned package includes a package body 51, the package body 51 has a package opening 52, and the easy-tear sealing film is used to seal the package opening 52. The package body 51 can be in the form of a bottle or a cup.

[0086] The contents in the package are not limited to liquids and solids, but can also be fluid contents with a certain viscosity.

[0087] In some typical embodiments, the packaging may be a yogurt packaging.

[0088] As mentioned above, the easy-tear sealing film seals the package opening 52. When it is necessary to eat, one only needs to hold the package body 51 with one hand, pinch the tear guide 22 with the other hand and apply force to the film layer. At this time, the barrier layer 20 and the heat-sealing layer 10 begin to separate. As the barrier layer 20 and the heat-sealing layer 10 continue to separate, the connecting portion 11 of the heat-sealing layer 10 is still connected to the package opening 52. The barrier layer 20 is further separated from the package opening 52 at the first inner diameter 62 of the connecting portion 11 with the partition 12 in the heat-sealing layer 10 to form an opening 13. The above process only requires a small force to effectively open the easy-tear sealing film, which is convenient for eating. The package with the above easy-tear sealing film can be convenient for consumers to use.

[0089] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An easily tearable sealing film, characterized in that, The easy-tear sealing film comprises a heat-sealing layer and a barrier layer connected to one side surface of the heat-sealing layer; The heat-sealing layer comprises a connecting portion for connecting with the package opening, and the heat-sealing layer further comprises a partition located inside the connecting portion, and the partition is selectively separable from the connecting portion; when the easy-tear sealing film is opened, at least a part of the partition is separated from the connecting portion to form an opening; Define the innermost edge of the projection of the connecting portion on the plane where the packaging opening is located as the first inner diameter; The innermost edge of the packaging opening is defined as a second inner diameter; At least a portion of the first inner diameter corresponding to the starting end of the opening is located inside the second inner diameter.

2. The tearable seal film according to claim 1, wherein The area where the connecting portion is connected to the packaging opening is a heat-sealing area, and the width of the heat-sealing area is 0.2 mm to 0.9 mm.

3. The tearable seal film according to claim 1 or 2, characterized in that, The first inner diameter includes a first region segment toward the starting end of the opening and a second region segment away from the starting end of the opening; The longest distance between the first region and the second inner diameter is greater than the longest distance between the second region and the second inner diameter.

4. The tearable seal film according to claim 3, wherein The minimum width of the first inner diameter is 1.7 mm to 148 mm.

5. The tearable seal film according to claim 3, wherein The partition is in a closed shape; when the easy-tear sealing film is opened, the partition is completely separated from the connecting part; Alternatively, the partition has a notch; when the easy-tear sealing film is opened, the partition is connected to the connecting part at the notch.

6. The tearable seal film according to claim 3, wherein, The partition includes a transition zone and a main body zone connected in sequence; the transition zone is located on a side of the main body zone close to the starting end of the opening; and the curvature radius of the main body zone is smaller than the curvature radius of the transition zone.

7. The tearable seal film according to claim 3, characterized in that, The barrier layer also has a tear guide portion, and the tear guide portion extends outward along the edge of the packaging opening.

8. The tearable seal film according to claim 3, wherein The maximum width of the easy-tear sealing film is 1.9 mm to 150 mm.

9. The tearable seal film according to claim 1, characterized in that, The easily tearable sealing film further comprises a printed protective layer, and the printed protective layer is located on a surface of the barrier layer on a side away from the heat sealing layer.

10. A package, characterized in that, The package comprises the easy-tear sealing film according to any one of claims 1 to 9.

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