Package cover film for preventing contents from splashing and package

Abstract

The utility model provides a packaging cover film capable of preventing contents from splashing and a package, and relates to the technical field of packaging cover films. Comprising a film layer, the edge of the film layer comprises an opening end used for tearing the package, and the film layer comprises a heat sealing layer and a blocking layer which are arranged in a stacked mode. The heat sealing layer comprises an annular connecting part and a separating part filled in the connecting part, the connecting part is used for being connected with the packaging opening, and when the film layer is far away from the packaging opening, the connecting part and the separating part are selectively separated; the connecting part is provided with an air leakage area corresponding to the opening end, and the air leakage area is located on the side, close to the partition part, of the connecting part. When the film layer is torn off, the front end of the film layer is separated from the packaging opening, balance of air pressure inside and outside the package is achieved through the air leakage area in the package, redundant air pressure in the package is discharged from the air leakage area along with the tearing of the film layer, and therefore material splashing in the uncovering process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging cover films, in particular to a packaging cover film and packaging for preventing contents from splashing. Background Art

[0002] Liquid products are stored by putting them into cups or bottles, and then sealing the cups or bottles, which is conducive to the storage and transportation of liquid products. Some liquids in liquid products are viscous, such as yogurt, corn paste, sesame paste, etc. When they are stored in cups or bottles, it is easy to cause yogurt to stick to the wall during product transportation.

[0003] At the same time, since the place where the product is produced and the place where it is used may have a certain difference in altitude or environmental pressure, when the user tears open the package, if the pressure inside the cup is high, the product stuck to the wall will be sprayed out at the moment the package is torn open, affecting the user experience.

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

[0005] The utility model aims to provide a packaging cover film and packaging for preventing the splashing of the contents, which can realize pressure relief at the moment of opening the cover, prevent the materials from spraying out, and improve the eating experience of the users.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In a first aspect, the utility model provides a packaging cover film for preventing contents from splashing, comprising a film layer, wherein an edge of the film layer comprises an opening end for tearing open the package.

[0008] In an optional embodiment, the open end is a protrusion that protrudes laterally from the shape of the film layer.

[0009] For example, most liquid packaging structures, such as cups and bottles, have a circular shape for the packaging opening. In order to facilitate users to tear open the packaging, in an optional embodiment, the film layer is in a teardrop shape. The round surface portion of the teardrop shape is used to cover the packaging opening, and the area protruding from the round surface portion to form the tip of the teardrop is the aforementioned opening end.

[0010] It can be understood that the shape of the film layer is not completely limited to a teardrop shape, and it can be adjusted according to the shape of the packaging opening. For example, when the shape of the packaging opening is a polygon, such as a quadrilateral, pentagon or triangle, the shape of the film layer can also be a corresponding quadrilateral, pentagon or triangle, as long as a protrusion protruding from the above shape is provided as the opening end.

[0011] Furthermore, the film layer is a multi-layer structure, the multi-layer structure is stacked in the longitudinal direction, and the multi-layer structure is tightly connected in sequence through a heat sealing process. Specifically, the film layer includes a stacked heat sealing layer and a barrier layer. The heat sealing layer is used to be connected to the packaging port. Through the heat sealing process, the heat sealing layer is tightly connected to the packaging port to prevent liquid leakage; the barrier layer is located on the side of the heat sealing layer away from the packaging port, and is used to block substances in the external environment to prevent fine particles in the environment from penetrating the heat sealing layer and affecting the shelf life of products such as yogurt.

[0012] In an optional embodiment, the barrier layer is aluminum foil, PET aluminum-plated or other materials with high barrier properties, which prevent the heat sealing layer from being damaged and prevent the product in the package from contacting the external environment.

[0013] The material of the heat-sealing layer used in the utility model can be an existing food-grade material with heat-sealing ability, such as ethylene-vinyl acetate copolymer (EVA), and the heat-sealing process can be achieved by using existing processes.

[0014] The heat-sealing layer includes an annular connecting portion and a partitioning portion filled inside the connecting portion, wherein the connecting portion is used to be connected to the packaging opening, and when the film layer is away from the packaging opening, the connecting portion and the partitioning portion can be selectively separated; an air release zone is also provided at the connecting portion corresponding to the opening end, and the air release zone is located on the side of the connecting portion close to the partitioning portion.

[0015] In an optional embodiment, the shape of the connection part is related to the shape of the packaging opening. For example, when the packaging opening is circular, the shape of the connection part is a circular ring structure; when the packaging opening is square, the shape of the connection part is a square ring structure. Alternatively, in order to meet different packaging requirements, the shape of the connection part can also be an irregular ring structure, for example, the inner ring surface is a circular ring, the outer ring surface is a square ring, etc., as long as the heat sealing layer can be tightly connected to the packaging opening, the shape of the connection part of the heat sealing layer can be set according to specific needs.

[0016] The utility model provides a packaging cover film for preventing contents from splashing, and its multi-layer structure includes a heat-sealing layer and a barrier layer designed to be stacked in the longitudinal direction. The packaging cover film is used to seal the packaging opening of packaging structures such as cups and bottles. Specifically, the heat-sealing layer is heat-sealed and connected to the packaging opening by heat-sealing technology. The part of the heat-sealing layer in contact with the packaging opening is the connecting part of the heat-sealing layer, and the part inside the connecting part that can contact with food is the partition. The barrier layer is located on the side of the heat-sealing layer away from the packaging opening. The film shape of the packaging cover film matches the shape of the packaging opening, and is laterally protruded to form an open end, so that the user can tear open the package.

[0017] When the user tears open the film layer, the film layer and the package opening are separated, the connecting part is fixed on the package opening due to the heat-sealed connection with the package opening, the connecting part is separated from the partition part, and the partition part moves away from the package opening along with the barrier layer. Therefore, it can be understood that the connecting force between the barrier layer and the partition part is greater than the connecting force between the partition part and the package opening, so that the connecting part and the partition part can be separated smoothly.

[0018] The above-mentioned connection force relationship can be achieved by the material itself, or by controlling the parameters of the heat sealing process to achieve a change in the bonding force, all of which can be achieved using existing technical solutions.

[0019] In an optional embodiment, the air leakage area is an air leakage hole opened on the heat sealing layer.

[0020] In an optional embodiment, the shape of the air leakage hole includes at least one of a straight line, a circle or a polygon, and the number of the air leakage hole is at least one, and the multiple air leakage holes are arranged in at least one of a straight line, a broken line, a circle or a polygon.

[0021] It is understandable that the air leakage holes can be 1 to 3 relatively large holes, for example, the diameter of the air leakage holes is 1 to 5 mm, or can be a structure with more micropores, for example, the diameter of the air leakage holes is less than 1 mm.

[0022] In an optional embodiment, in each packaging cover film for preventing the contents from splashing, the shape of the air leakage holes may be the same shape or a combination of different shapes; the number of the air leakage holes may be one or more.

[0023] In an optional embodiment, the vent hole is located at the connection between the connecting portion and the partition portion, or the vent hole is located in the connecting portion, so that the air pressure can be discharged from the vent hole at the moment of opening.

[0024] For example, when the bleed hole is in a triangular shape, the tip of the triangle faces the opening end, so that the air pressure can be discharged from the bleed hole at the moment of opening.

[0025] In an optional embodiment, in order to facilitate tearing open the packaging cover film, an opening section is provided on the barrier layer. The opening section is a dividing line and is arranged at a corresponding position on the outer annular surface of the connecting portion. The opening section connects the two ends of the protrusion to form an open end on the side of the barrier layer away from the air leakage zone.

[0026] It can be understood that the film layer includes an area for covering the packaging opening and an area for facilitating the opening, and the opening section is the line dividing the two areas.

[0027] In an optional embodiment, the material of the heat-sealing layer is only located on the side of the opening section facing the pressure relief zone, and there is no material of the heat-sealing layer on the opening end portion.

[0028] In an optional embodiment, the opening section is any one of a sawtooth shape, a wave shape or an arc shape.

[0029] In an optional embodiment, the film layer further includes a printing layer, which is in contact with the barrier layer and away from the heat-sealing layer.

[0030] In an optional embodiment, the shape and size of the printing layer are the same as those of the barrier layer, and the printing layer is also disposed on the surface of the barrier layer by a heat sealing process.

[0031] In a second aspect, the utility model provides a package, comprising a package body and a package cover film as described in any one of the aforementioned embodiments, wherein the package body has a package opening, and a connecting portion of a heat-sealing layer of the package cover film is connected to the package opening.

[0032] The beneficial effects of the embodiments of the utility model are:

[0033] The utility model provides a packaging cover film and packaging for preventing the splashing of contents, by setting an air release zone on the heat sealing layer, the air release zone is close to the opening end, when the film layer is torn, the front end of the film layer is separated from the packaging opening, the air pressure inside and outside the package is first balanced through the air release zone, and the excess air pressure in the package is discharged from the air release zone as the film layer is torn, thereby avoiding the splashing of materials during the opening process. The connecting part and the separating part of the heat sealing layer are separated, the connecting part is located on the packaging opening, the separating part and the barrier layer are torn off the packaging opening together, and the annular area of ​​the barrier layer corresponding to the connecting part is exposed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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.

[0035] Figure 1 A schematic diagram of the structure of a packaging cover film for preventing contents from splashing provided by the first embodiment of the utility model;

[0036] Figure 2 A schematic cross-sectional structure diagram of a packaging cover film for preventing contents from splashing provided in the first embodiment of the utility model;

[0037] Figure 3 A schematic diagram of the structure of the packaging provided by the first embodiment of the utility model;

[0038] Figure 4 A schematic diagram of the structure of a packaging cover film for preventing contents from splashing provided in the second embodiment of the utility model;

[0039] Figure 5A schematic diagram of the structure of a packaging cover film for preventing contents from splashing provided in a third embodiment of the utility model;

[0040] Figure 6 A schematic diagram of the structure of a packaging cover film for preventing contents from splashing provided in a fourth embodiment of the present utility model;

[0041] Figure 7 A schematic diagram of the structure of a packaging cover film for preventing contents from splashing provided in a fifth embodiment of the present utility model;

[0042] Figure 8 A schematic diagram of the structure of a packaging cover film for preventing contents from splashing provided in a sixth embodiment of the present utility model;

[0043] Fig. 9 This is a schematic structural diagram of a packaging cover film for preventing contents from splashing provided in the seventh embodiment of the present utility model.

[0044] Icon: 100-packaging cover film; 110-opening end; 111-opening section; 120-heat sealing layer; 121-air release area; 122-connecting part; 123-partitioning part; 130-barrier layer; 140-printing layer; 10-packaging; 200-packaging body; 210-packaging opening. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0048] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0049] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0050] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] First embodiment

[0052] Please refer to Figure 1 and Figure 3 , this embodiment provides a packaging cover film 100 and a packaging 10 for preventing contents from splashing.

[0053] The package 10 comprises a package body 200 and the above-mentioned package cover film 100. The package body 200 has a package opening 210. The package cover film 100 is tearably sealed and connected to the package opening 210. Figure 3 It can be seen that the package 10 provided in this embodiment is a cup-shaped package 10, the package body 200 is a cup body, and the package opening 210 is a cup opening.

[0054] Further, by Figure 3 It can be seen that the packaging cover film 100 of this embodiment is applied to a packaging 10 with a semicircular cup-shaped packaging opening 210, which includes a film layer, and the film layer has a teardrop shape, wherein the round surface portion in the teardrop shape is used to cover the packaging opening 210, and the area that protrudes laterally from the round surface portion to form the tip of the teardrop is the opening end 110.

[0055] For further information, please refer to Figure 2 The film layer of this embodiment is a multi-layer structure, the multi-layer structure is stacked in the longitudinal direction, and the multi-layer structure is tightly connected in sequence through a heat sealing process.

[0056] Specifically, the film layer includes a heat-sealing layer 120, a barrier layer 130 and a printing layer 140 which are stacked in sequence. The heat-sealing layer 120 is used to be connected to the packaging opening 210. Through the heat-sealing process, the heat-sealing layer 120 is tightly connected to the packaging opening 210 to prevent liquid leakage; the barrier layer 130 is located on the side of the heat-sealing layer 120 away from the packaging opening 210, and is used to block substances in the external environment and prevent fine particles in the environment from penetrating the heat-sealing layer 120 and affecting the shelf life of products such as yogurt; the printing layer 140 is in contact with the barrier layer 130 and is located on the side away from the heat-sealing layer 120.

[0057] Please continue to refer to Figure 1 The heat-sealing layer 120 includes an annular connecting portion 122 and a partition 123 filled inside the connecting portion 122. The connecting portion 122 is used to connect with the packaging port 210. When the film layer is away from the packaging port 210, the connecting portion 122 and the partition 123 can be selectively separated. The connecting portion 122 is also provided with an air release area 121 corresponding to the opening end 110. The air release area 121 is located on one side of the connecting portion 122 close to the partition 123.

[0058] Since the packaging opening 210 of this embodiment is in the shape of a semicircle and the film layer is in the shape of a teardrop, the outer annular surface of the connecting portion 122 is in the shape of a circular ring and the inner annular surface is in the shape of a semicircle. In other embodiments, when the packaging opening 210 is in the shape of a square, the connecting portion 122 is in the shape of a square ring structure; or, in order to meet different packaging requirements, the shape of the connecting portion 122 can also be an irregular ring structure, for example, the inner annular surface is in the shape of a circular ring and the outer annular surface is in the shape of a square ring. As long as the heat sealing layer 120 can be tightly connected to the packaging opening 210, the shape of the connecting portion 122 of the heat sealing layer 120 can be set according to specific needs.

[0059] In this embodiment, the air leakage area 121 is an air leakage hole opened on the heat sealing layer 120 , and the air leakage hole is located between the connecting portion 122 and the partition portion 123 corresponding to the open end 110 .

[0060] In this embodiment, there are three vent holes which are evenly spaced in a row. The vent holes have the same shape, which is a quadrilateral, and the convex directions are all toward the opening end 110, so that the air pressure can be discharged from the vent holes at the moment of opening.

[0061] In this embodiment, in order to facilitate tearing open the packaging cover film 100, an opening section 111 is provided on the barrier layer 130. The opening section 111 is a dividing line and is provided at a corresponding position on the outer annular surface of the connecting portion 122. The opening section 111 connects the two ends of the protruding portion to form an opening end 110 on the side of the barrier layer 130 away from the air release area 121.

[0062] It can be understood that the film layer includes an area for covering the packaging opening 210 and an area for facilitating the opening, and the opening section 111 is the line dividing the two areas.

[0063] In this embodiment, the opening segment 111 is a zigzag line segment.

[0064] In this embodiment, the heat sealing layer 120 is a circular film layer structure, the connecting portion 122 is a structure with a circular outer ring surface and a semicircular inner ring surface, the barrier layer 130 and the printing layer 140 have the same shape and size, and the shape of the barrier layer 130 is a circular film layer of the heat sealing layer 120 with a pointed end protruding laterally, so that the overall shape presents a teardrop-shaped structure, and therefore the opening end 110 does not contain the material of the heat sealing layer 120.

[0065] In this embodiment, the opening end 110 is located on a side of the arc segment away from the semicircular surface of the packaging opening 210 .

[0066] The present embodiment provides a packaging cover film 100 for preventing contents from splashing and a package 10 having the packaging cover film 100 for preventing contents from splashing, and the working principle thereof is as follows:

[0067] Please refer to Figure 1 and Figure 3 The packaging cover film 100 provided in this embodiment is used to seal the packaging opening 210 of the package 10. It is a multi-layer structure, including a heat-sealing layer 120, a barrier layer 130 and a printing layer 140 stacked in the longitudinal direction. The heat-sealing layer 120 is heat-sealed and connected with the packaging opening 210 by heat-sealing technology. The part of the heat-sealing layer 120 in contact with the packaging opening 210 is the connecting part 122 of the heat-sealing layer 120. The part inside the connecting part 122 that can contact with food is the partition 123. The barrier layer 130 is located on the side of the heat-sealing layer 120 away from the packaging opening 210. The film shape of the packaging cover film 100 matches the shape of the packaging opening 210, and protrudes laterally to form an open end 110, so that the user can tear open the package.

[0068] When the user tears the film layer, the film layer and the package opening 210 are separated. The connection part 122 is fixed on the package opening 210 due to the heat-sealed connection with the package opening 210. At the moment of tearing the film layer, the air vent between the connection part 122 and the partition part 123 discharges the excess air pressure in the package 10, thereby preventing the material from splashing. As the film layer and the package opening 210 are separated, the connection part 122 and the partition part 123 are separated, and the partition part 123 moves away from the package opening 210 along with the barrier layer 130.

[0069] Second embodiment

[0070] Please refer to Figure 4 This embodiment provides a packaging cover film 100 for preventing contents from splashing, and its structure is similar to that of the first embodiment, except that the structure of the air release area 121 is different, as described below.

[0071] The air leakage area 121 of the packaging cover film 100 for preventing the contents from splashing provided in this embodiment is an air leakage hole opened on the heat sealing layer 120 , and the air leakage hole is located between the connecting portion 122 and the partition portion 123 corresponding to the opening end 110 .

[0072] In this embodiment, there are three vent holes which are evenly spaced in a row. The vent holes have the same shape, which is an acute triangle, and the tips of the triangles face the opening end 110, so that the air pressure can be discharged from the vent holes at the moment of opening.

[0073] Third embodiment

[0074] Please refer to Figure 5 This embodiment provides a packaging cover film 100 for preventing contents from splashing, and its structure is similar to that of the first embodiment, except that the structure of the air release area 121 is different, as described below.

[0075] The air leakage area 121 of the packaging cover film 100 for preventing the contents from splashing provided in this embodiment is an air leakage hole opened on the heat sealing layer 120 , and the air leakage hole is located between the connecting portion 122 and the partition portion 123 corresponding to the opening end 110 .

[0076] In this embodiment, there are three vent holes which are evenly spaced in a row. The vent holes have the same shape, which is semicircular, and the arc-shaped convex surfaces of the semicircular are all facing the opening end 110, so that the air pressure can be discharged from the vent holes at the moment of opening.

[0077] Fourth embodiment

[0078] Please refer to Figure 6 This embodiment provides a packaging cover film 100 for preventing contents from splashing, and its structure is similar to that of the first embodiment, except that the structure of the air release area 121 is different, as described below.

[0079] The air leakage area 121 of the packaging cover film 100 for preventing the contents from splashing provided in this embodiment is an air leakage hole opened on the heat sealing layer 120 , and the air leakage hole is located between the connecting portion 122 and the partition portion 123 corresponding to the opening end 110 .

[0080] In this embodiment, there is one vent hole in the shape of an obtuse triangle, and the tip of the triangle faces the opening end 110, so that the air pressure can be discharged from the vent hole at the moment of opening.

[0081] Fifth embodiment

[0082] Please refer to Figure 7 This embodiment provides a packaging cover film 100 for preventing contents from splashing, and its structure is similar to that of the fourth embodiment, except that the triangle of the air leakage hole provided in this embodiment is an acute triangle.

[0083] Sixth embodiment

[0084] Please refer to Figure 8 This embodiment provides a packaging cover film 100 for preventing contents from splashing, and its structure is similar to that of the first embodiment, except that the structure of the air release area 121 is different, as described below.

[0085] The air leakage area 121 of the packaging cover film 100 for preventing the contents from splashing provided in this embodiment is an air leakage hole opened on the heat sealing layer 120 , and the air leakage hole is located between the connecting portion 122 and the partition portion 123 corresponding to the opening end 110 .

[0086] In this embodiment, there are five vent holes, which are evenly spaced in a row. The vent holes have the same shape, which is a straight line. The straight line extends from the boundary line between the connecting portion 122 and the partition portion 123 toward the opening end 110, so that the air pressure can be discharged from the vent holes at the moment of opening.

[0087] Seventh embodiment

[0088] Please refer to Fig. 9 This embodiment provides a packaging cover film 100 for preventing contents from splashing, and its structure is similar to that of the first embodiment, except that the structure of the air release area 121 is different, as described below.

[0089] The air leakage area 121 of the packaging cover film 100 for preventing contents from splashing provided in this embodiment is an air leakage hole opened on the heat sealing layer 120 . The air leakage hole is located in the connecting portion 122 corresponding to the opening end 110 , and the connecting portion 122 corresponding to the air leakage hole is not heat-sealed with the packaging opening 210 .

[0090] In this embodiment, the air leakage holes are two triangles arranged longitudinally, and the tips of the triangles face the opening end 110, so that the air pressure can be discharged from the air leakage holes at the moment of opening.

[0091] 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. A packaging cover film to prevent the contents from splashing, It is characterized in that The package comprises a film layer, the edge of which comprises an opening end for tearing the package, the film layer is a multi-layer structure, comprising a heat-sealing layer and a barrier layer which are stacked, the heat-sealing layer is used to connect with the package opening, and the barrier layer is located on a side of the heat-sealing layer away from the package opening; The heat-sealing layer includes an annular connecting portion and a partition filled inside the connecting portion, wherein the connecting portion is used to be connected to the packaging opening, and when the film layer is away from the packaging opening, the connecting portion and the partition can be selectively separated; the connecting portion is also provided with an air release area corresponding to the opening end, and the air release area is located on a side of the connecting portion close to the partition.

2. The packaging cover film according to claim 1, It is characterized in that The air leakage area is an air leakage hole opened on the heat sealing layer.

3. The packaging cover film according to claim 2, It is characterized in that The shape of the air leakage hole includes at least one of a straight line, a circle or a polygon, and the number of the air leakage hole is at least one, and a plurality of the air leakage holes are arranged in at least one of a straight line, a broken line, a circle or a polygon.

4. The packaging cover film according to claim 2, It is characterized in that The air leakage hole is located at the connection between the connecting part and the partition part, or the air leakage hole is located in the connecting part, and the protrusion direction of the air leakage hole is toward the opening end.

5. The packaging cover film according to claim 1, It is characterized in that The open end is a protruding portion that protrudes laterally from the shape of the film layer.

6. The packaging cover film according to claim 5, It is characterized in that The film layer is in the shape of a water drop.

7. The packaging cover film according to claim 5, It is characterized in that The barrier layer is provided with an opening section, which is provided corresponding to the outer annular surface of the connecting portion and connects two ends of the protruding portion to form the opening end on a side of the barrier layer away from the air leakage zone.

8. The packaging cover film according to claim 7, It is characterized in that The opening section is any one of a sawtooth shape, a wave shape or an arc shape.

9. The packaging cover film according to any one of claims 2 to 8, It is characterized in that The film layer further comprises a printing layer, wherein the printing layer is in contact with the barrier layer and is away from the heat sealing layer.

10. A packaging, It is characterized in that The invention comprises a packaging body and the packaging cover film according to any one of claims 1 to 9, wherein the packaging body has a packaging opening, and the connecting portion of the heat-sealing layer of the packaging cover film is connected to the packaging opening.

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