Easily-torn cover film and package

Abstract

The utility model provides an easy-to-tear cover film and a package, and belongs to the technical field of food packaging. The easy-to-tear cover film comprises a heat sealing layer and a barrier layer connected to the surface of the heat sealing layer, the heat sealing layer comprises a connecting part and a separating part which is positioned on the inner side of the connecting part and can be selectively separated from the connecting part; when the easy-to-tear cover film is torn, at least partial area of the separating part is separated from the connecting part to form an opening; and the blocking layer is provided with a tearing guide line corresponding to the starting end of the opening. According to the easy-to-tear cover film, the heat sealing layer comprises the connecting part and the separating part which can be selectively separated, and the tearing guide line is arranged at the position, corresponding to the starting end of the opening, of the blocking layer, so that when the easy-to-tear cover film is torn, the separating part can be effectively separated from at least part of the connecting part under the action of the binding force of the blocking layer; the connecting part is always connected with the packaging opening. The easy-to-tear cover film can be effectively uncovered with small force in the process, and eating is convenient. The package with the easy-to-tear cover film can be conveniently used by consumers.

Description

Technical Field

[0001] The utility model relates to the technical field of food packaging, in particular to an easy-tear cover 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 large, and it is difficult to effectively separate the sealing film from the packaging opening under the condition of applying a small force. If the force is too large, on the one hand, it is easy to cause the contents in the package to be squeezed out or splashed out, and on the other hand, it is easy to cause the sealing film to break directly at the heat seal.

[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 cover 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 cover 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 cover film is peeled off, at least a part of the partition is separated from the connecting portion to form an opening;

[0009] A tear guide line is arranged at a position of the barrier layer corresponding to the starting end of the opening.

[0010] In an optional embodiment, the partition is in a closed shape; when the easy-tear cover film is opened, the partition is completely separated from the connecting part;

[0011] Alternatively, the partition has a notch; when the easy-tear cover film is opened, the partition is connected to the connecting part at the notch.

[0012] In an optional embodiment, an inner edge of the connecting portion close to the starting end of the opening extends inwardly along the innermost edge of the packaging opening in the optional embodiment.

[0013] In an optional embodiment, the inner edge of the connecting portion away from the starting end of the opening extends inward along the innermost edge of the packaging opening, and the distance the connecting portion extends inward on the side close to the starting end of the opening is greater than the distance the connecting portion extends inward on the side away from the starting end of the opening.

[0014] 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.

[0015] In an optional embodiment, there are multiple tear guide lines, and the multiple tear guide lines are sequentially spaced apart along the peeling direction of the easy-tear cover film.

[0016] In an optional embodiment, the barrier layer further has a tear guide portion, which extends outward along the edge of the package opening.

[0017] In an optional embodiment, the tear guide portion is provided with an anti-slip structure.

[0018] In an optional embodiment, the easy-tear cover 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.

[0019] In a second aspect, the utility model provides a package having the easy-tear cover film of any one of the aforementioned embodiments.

[0020] The beneficial effects of the utility model include:

[0021] By setting the heat-sealing layer into a selectively separable connection part and a partition part, and at least part of the connection between the connection part and the partition part is provided with a tear guide line, when it is needed to be eaten, it is only necessary to hold the package with one hand, pinch the easy-tear cover film with the other hand and apply force to the film layer. At this time, the barrier layer and the heat-sealing layer begin to separate at the tear guide line. As the barrier layer and the heat-sealing layer continue to separate, the connection part of the heat-sealing layer is still connected to the package opening, and the barrier layer and the partition part in the heat-sealing layer are further separated from the package opening to form an opening. The above method can open the film layer with a small force under the tearing action of the tear guide line, avoiding the problem of applying too much force to open the film layer in the prior art, and also avoiding the situation where the film layer is broken at the heat seal before it is opened or the contents in the package are squeezed out or splashed out due to improper force. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 Schematic diagram of each layer structure in the easy-to-tear cover film provided in Embodiment 1 of the present utility model;

[0024] Figure 2 Schematic diagram of the structure of the easy-to-tear cover film combined with packaging provided in Embodiment 1 of the present utility model;

[0025] Figure 3 The first schematic diagram of the easy-to-tear cover film provided in Embodiment 1 of the present utility model;

[0026] Figure 4 The second schematic diagram of the easy-to-tear cover film provided in Embodiment 1 of the present utility model;

[0027] Figure 5 The third schematic diagram of the easy-to-tear cover film provided in Embodiment 1 of the present utility model;

[0028] Figure 6 The fourth schematic diagram of the easy-to-tear cover film provided in Embodiment 1 of the present utility model;

[0029] Figure 7 Schematic diagram of the structure of the connection part of the heat-sealing layer in the easy-to-tear cover film provided in Embodiment 1 of the present utility model.

[0030] Icon: 10 - heat-sealing layer; 11 - connection part; 111 - first area; 112 - second area; 113 - blocking area; 12 - separating part; 121 - transition area; 122 - main body area; 123 - notch; 13 - opening; 20 - barrier layer; 21 - tear guide line; 22 - tear guide part; 221 - hollowed-out area; 30 - printing protection layer; 41 - starting end; 51 - packaging body; 52 - packaging opening. Detailed implementation manners

[0031] 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. Obviously, 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.

[0032] 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 shall fall within the protection scope of the present utility model.

[0033] It should be noted that similar reference numerals and letters indicate 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 subsequent drawings.

[0034] 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 positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional 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.

[0035] 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.

[0036] 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.

[0037] Embodiment 1

[0038] Please refer to Figures 1 to 6 , this embodiment provides an easily tearable lid film, which includes a heat-sealing layer 10 and a barrier layer 20 connected to one surface of the heat-sealing layer 10.

[0039] 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).

[0040] 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, an aluminum foil, a PET aluminized film, or other high-barrier materials.

[0041] 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.

[0042] 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 tearable lid 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).

[0043] 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 exemplarily a circular ring or a square ring, and can also be other annular geometric figures.

[0044] 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 integral connection 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 an opening 13.

[0045] 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 with the uncovering force applied by the user, and during the process of uncovering the barrier layer 20, when uncovering to the connection 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 tearable lid film is in the uncovered state or the sealed state, the connecting portion 11 in its 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.

[0046] Through the above arrangement, the film layer can be uncovered with a relatively small acting force, avoiding the problem in the prior art that a too large acting force is required to uncover the film layer, and at the same time avoiding the situation that the film layer breaks at the heat-sealing part before being uncovered due to improper force application.

[0047] In some embodiments, such as Figure 3 and Figure 4As shown, the partition 12 is in a closed shape, and when the easy-tear cover film is opened, the partition 12 is completely separated from the connecting portion 11. That is, when the barrier layer 20 is subjected to force, the barrier layer 20 and the partition 12 are completely opened and completely separated from the packaging opening 52.

[0048] The specific presentation form of the closed shape is not limited, for example, it can be a closed circle, semicircle, square or fan-shaped, etc. Exemplarily, the circumferential edge of the partition 12 can be a curve, a straight line, or a combination of a curve and a straight line.

[0049] In other embodiments, Figure 5 As shown, the partition 12 has a notch 123, and when the easy-tear cover film is opened, the partition 12 is connected to the connecting portion 11 at the notch 123. That is, in the process of applying force to the barrier layer 20, the barrier layer 20 with the partition 12 is opened from the starting end 41 of the opening 13 until it reaches the notch 123, at which time the easy-tear cover film is partially separated from the packaging opening 52. This method facilitates the recycling of the entire packaging.

[0050] The above-mentioned "starting end 41" refers to the end where the barrier layer 20 and the heat-sealing layer 10 are first separated during the peeling process. The above-mentioned notch 123 can be arranged according to specific circumstances, including the specific arrangement position and size of the notch 123 are not limited.

[0051] In some embodiments, the inner edge of the starting end 41 of the connecting portion 11 near the opening 13 extends inwardly along the innermost edge of the packaging opening 52. For ease of understanding, the area of ​​the connecting portion 11 near the starting end 41 of the opening 13 is defined as the first area 111 (eg, Figure 7 As shown in the figure, as for the first area 111, the outer edge of the first area 111 can be flush with the outermost edge of the packaging opening 52, and the inner edge of the first area 111 extends inwardly along the innermost edge of the packaging opening 52. The extended area forms a blocking area 113, which can play a certain blocking role on the contents in the package, thereby facilitating the prevention of the direct spraying of the contents in the package during the process of uncovering the film layer. In addition, the outer edge of the first area 111 can extend outwardly along the outermost edge of the packaging opening 52, and the inner edge of the first area 111 extends inwardly along the innermost edge of the packaging opening 52. Similarly, the area extending inwardly forms the blocking area 113. For example, the outer edge of the first area 111 can be projected on the plane where the packaging opening 52 is located between the outer edge and the inner edge of the packaging opening 52, and the inner edge of the first area 111 extends inwardly along the innermost edge of the packaging opening 52. The area extending inwardly forms the blocking area 113. In some typical embodiments, the width of the starting end 41 of the connecting portion 11 close to the opening 13 is not less than the width of the packaging opening 52 .

[0052] Accordingly, the region of the connecting portion 11 far from the starting end 41 of the opening 13 is defined as the second region 112 (as Figure 7 shown). For the second region 112, the outermost edge of the second region 112 may be flush with the outermost edge of the packaging opening 52, or may extend outward along the outermost edge of the packaging opening 52. In addition, the projection of the outermost edge of the second region 112 on the plane where the packaging opening 52 is located may also be located between the outer edge and the inner edge of the packaging opening 52. The innermost edge of the second region 112 may be flush with the innermost edge of the packaging opening 52, or may extend inward from the innermost edge of the packaging opening 52.

[0053] In some embodiments, the distance that the side of the connecting portion 11 near the starting end 41 of the opening 13 extends inward is greater than the distance that the side of the connecting portion 11 far from the starting end 41 of the opening 13 extends inward. That is, the distance that the inner edge of the first region 111 extends inward along the innermost edge of the packaging opening 52 > the distance that the inner edge of the second region 112 extends inward along the innermost edge of the packaging opening 52.

[0054] In this embodiment, the shapes of the connecting portion 11 and the separating portion 12 are not limited. Exemplarily but not restrictively, they can independently be circular, square, triangular, other polygons, or irregular shapes, etc.

[0055] In some embodiments, as Figure 3 , Figure 4 and Figure 5 shown, the separating portion 12 includes a transition region 121 and a main body region 122 connected in sequence. The transition region 121 is located on the side of the main body region 122 near the starting end 41 of the opening 13. In some more specific embodiments, the radius of curvature of the main body region 122 is smaller than the radius of curvature of the transition region 121. A chamfer may be provided at the connection between the transition region 121 and the main body region 122. Through the above settings, it is more conducive to the separating portion 12 being peeled off together with the barrier layer 20 during the peeling process of the barrier layer 20. In addition, the separating portion 12 may also not include a transition region, as Figure 6 shown.

[0056] In this embodiment, a guide tearing line 21 is provided at the position of the barrier layer 20 corresponding to the starting end 41 of the opening 13 (as Figure 2 , Figures 3 to 6 shown). For example, the guide tearing line 21 may be provided corresponding to the edge of the packaging opening 52. By providing the guide tearing line 21, a guiding tearing effect can be achieved, facilitating the user to apply force here to separate the barrier layer 20 from the heat-sealing layer 10.

[0057] In some embodiments, taking Figure 2In some embodiments, the tear guide line 21 may be arranged horizontally; in some other embodiments, the tear guide line 21 may be arranged vertically; in some other embodiments, the tear guide line 21 may be arranged in a direction having a certain angle with the vertical direction.

[0058] The shape of the above-mentioned tear guide line 21 is not limited, and can include wavy or broken line shapes, etc. by way of example but not limitation. When the tear guide line 21 is wavy, it can be in a continuous and uniform wavy shape, and the radius of curvature of the arc corresponding to each wave is the same or different. When the tear guide line 21 is in a broken line shape, the broken line can be serrated, and the shape of the serration can be, for example, a triangle or a square, etc. In addition, the tear guide line 21 can also include a wavy area and a broken line area at the same time, and the above-mentioned wavy area and the broken line area can be arranged at cross-intervals, or can be arranged continuously respectively (that is, one side is continuous wavy, and the other side is continuous broken line). In some embodiments, the tear guide line 21 can be in a breakpoint type.

[0059] 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 3 to 6 As shown in the figure, a plurality of tear guide lines 21 are sequentially spaced apart along the uncovering direction of the easy-tear cover film (such as spaced apart in a parallel manner, or spaced apart in a non-parallel manner). Exemplarily, when the number of tear guide lines 21 is multiple, it can be 2, 3 or more. In addition, in some other embodiments, when the number of tear guide lines 21 is multiple, taking 2 as an example, one end of the second tear guide line can be connected to any position of the first tear guide line, so that the tearing position can be transitioned from the first tear guide line to the second tear guide line. Furthermore, the barrier layer 20 of the easy-tear cover film also has a tear guide portion 22, and the tear guide portion 22 extends outward along the edge of the packaging opening 52. It can also be understood that: the barrier layer 20 includes a main body portion and a tear guide portion 22, the main body portion is used to cover the packaging opening 52, and the tear guide portion 22 extends outward from the main body portion. The provision of the tear guide portion 22 makes it easy for the user to grasp or pinch it, which is conducive to further applying force to uncover the film layer.

[0060] 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.

[0061] In some embodiments, the barrier layer 20 is in a teardrop shape, so that the easy-tear cover film as a whole is also in a teardrop shape. In addition, the shapes of the barrier layer 20 and the easy-tear cover film can be adjusted as needed, and this application does not make any specific restrictions thereon.

[0062] In some embodiments, the tearing guide portion 22 is further provided with an anti-slip structure. For example, the anti-slip structure can be provided on the upper surface of the tearing guide portion 22, or on the lower surface of the tearing guide portion 22, or on both the upper and lower surfaces of the tearing guide portion 22.

[0063] Among them, the anti-slip structure can be a convex contact point extending from the surface of the tearing guide portion 22, or other structures such as anti-slip patterns that can increase the friction between the hand and the tearing guide portion 22. The specific form, quantity, and distribution of the anti-slip structure on the tearing guide portion 22 are not specifically limited in this embodiment.

[0064] In some embodiments, the tearing guide portion 22 is further provided with a hollowed-out area 221 (as Figure 4 and Figure 5 shown). The hollowed-out area 221 can be located in the middle area of the tearing guide portion 22 in an exemplary but non-limiting manner, so as to evenly disperse the force applied during the uncovering process, thereby avoiding excessive force that may cause the tearing guide 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 off the easy-to-tear cover film during the film uncovering process due to the relatively smooth film layer when applying force.

[0065] Among them, the shape of the hollowed-out area 221 is not limited. For example, it can be circular, oval, square, etc. In some relatively typical embodiments, the hollowed-out area 221 is circular and adapted to the finger.

[0066] In some embodiments, the easy-to-tear cover 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.

[0067] 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.

[0068] In some specific embodiments, the easy-to-tear cover film can be set in the following manner:

[0069] Method 1: The easy-to-tear cover 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.

[0070] The barrier layer 20 includes a circular body portion and a tear guide portion 22 extending outward from a partial area of the body portion. The tear guide portion 22 and the body portion together make the entire barrier layer 20 in a teardrop shape. Correspondingly, the outer diameter of the 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). In the area of the barrier layer 20 corresponding to the starting end 41 of the opening 13, there are 2 tear guide lines 21 arranged at intervals in sequence along the opening direction of the easy tear lid film. The distance between the 2 tear guide lines 21 can be 10 mm to 15 mm (such as 12.2 mm ± 1.5 mm). Each tear guide 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).

[0071] 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 and connected to the packaging opening 52. The outer edge of the first area 111 of the connecting portion 11 is flush with the outermost edge of the packaging opening 52, and the inner edge of the first area 111 extends inward along the innermost edge of the packaging opening 52, and this extended area forms a blocking area 113; the outermost edge of the second area 112 of the connecting portion 11 is flush with the outermost edge of the packaging opening 52, and the innermost edge of the second area 112 extends inward from the innermost edge of the packaging opening 52; the inward extension distance of the first area 111 is greater than the inward extension distance of the second area 112. The separating portion 12 includes a transition area 121 and a main body area 122 connected in sequence. The main body area 122 is concentric with the body portion of the barrier layer 20. The outer diameter of the main body area 122 can be 70 mm to 80 mm (such as 75.3 mm ± 0.5 mm). The transition area 121 is connected to one end of the main body area 122 corresponding to the tear guide portion 22, and the radius of curvature of the transition area 121 is greater than the radius of curvature of the main body area 122. The maximum distance from the connection point of the transition area 121 and the main body area 122 to all the tear guide lines 21 can be 26 mm to 32 mm (such as 29 mm ± 1.5 mm).

[0072] The size of the printing protection layer 30 is the same as that of the barrier layer 20.

[0073] 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).

[0074] Method 3: The difference between this method and Method 1 is that a circular hollow portion is provided in the middle area of the tear guide portion 22.

[0075] Method 4: The difference between this method and Method 1 is that the separating portion 12 does not include the transition area 121.

[0076] As described above, this embodiment configures the heat-sealing layer 10 into a selectively separable connecting portion 11 and a separating portion 12, and provides a tear guide line 21 at a position corresponding to the starting end 41 of the opening 13 of the barrier layer 20. This enables the separating portion 12 to be effectively separated from the connecting portion 11 in at least a partial area under the action of the binding force of the barrier layer 20 while using a relatively small tearing force.

[0077] Example 2

[0078] The utility model provides a package, which has the easy-tear cover film in the above embodiment 1.

[0079] As an example, refer to Figure 2 The above-mentioned package includes a package body 51, the package body 51 has a package opening 52, and the easy-tear cover film is used to seal the package opening 52. The package body 51 can be in the form of a bottle or a cup.

[0080] The contents in the package are not limited to liquids and solids, but can also be fluid contents with a certain viscosity.

[0081] In some typical embodiments, the packaging may be a yogurt packaging.

[0082] As mentioned above, the easy-tear cover film seals the package opening 52. When it is time 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 at the tear guide line 21. 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, and the barrier layer 20 is further separated from the package opening 52 with the partition 12 in the heat-sealing layer 10 to form an opening 13. The above process can effectively open the easy-tear cover film with less force under the tearing action of the tear guide line 21, making it easy to eat. The package with the above easy-tear cover film can be convenient for consumers to use.

[0083] 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 easy-tear cover film, characterized in that: The easy-tear cover 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 cover film is opened, at least a part of the partition is separated from the connecting portion to form an opening; The barrier layer is provided with a tear guide line at a position corresponding to the starting end of the opening.

2. The easy-tear cover film according to claim 1, characterized in that: The partition is in a closed shape; when the easy-tear cover film is opened, the partition is completely separated from the connecting part; Alternatively, the partition has a notch; when the easy-tear cover film is opened, the partition is connected to the connecting part at the notch.

3. The easy-tear cover film according to claim 2, characterized in that: The inner edge of the connecting portion close to the starting end of the opening extends inwardly along the innermost edge of the packaging opening.

4. The easy-tear cover film according to claim 3, characterized in that: The inner edge of the connecting portion away from the starting end of the opening extends inwardly along the innermost edge of the packaging opening, and the distance inwardly extending on the side of the connecting portion close to the starting end of the opening is greater than the distance inwardly extending on the side of the connecting portion away from the starting end of the opening.

5. The easy-tear cover film according to claim 2, characterized in that: 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.

6. The easy-tear cover film according to any one of claims 1 to 5, characterized in that: There are multiple tear guide lines, and the multiple tear guide lines are sequentially arranged at intervals along the uncovering direction of the easy-tear cover film.

7. The easy-tear cover film according to claim 6, 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 easy-tear cover film according to claim 7, characterized in that: The tear guiding portion is provided with an anti-slip structure.

9. The easy-tear cover film according to claim 1, characterized in that: The easy-tear cover 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 cover film according to any one of claims 1 to 9.

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