A multi-layer barrier pe film

Abstract

The application relates to a multi-layer barrier PE film, belonging to the PE film field, which comprises a film body, wherein a tear positioning crease is arranged on the film body, a plurality of tear grooves are punched on the tear positioning crease from front to back, and a protective glue tissue is arranged on the film body and covers and protects the tear positioning crease and the tear grooves. The protective glue tissue arranged on the multi-layer barrier PE film which can be torn and separated covers and protects the tear positioning crease and the tear grooves, effectively preventing the tear line from being cracked due to scratching with other articles, so as to affect the subsequent packaging use of the PE film.

Description

Technical Field

[0001] This utility model is a multilayer barrier PE film, belonging to the field of PE film. Background Technology

[0002] PE film refers to polyethylene film, a thin film material made of polyethylene. Depending on the processing method and performance requirements, PE film can be classified into different types, such as high-density polyethylene film, low-density polyethylene film, and linear low-density polyethylene film.

[0003] Existing tearable PE films use a pressure roller to create tear lines. These tear lines are exposed and are easily scratched by other items during transportation and handling, causing them to crack and affecting the subsequent packaging use of the PE film. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-layer barrier PE film to solve the problem that the existing tearable PE film uses the action of pressure rollers to directly create tear lines. These tear lines are exposed and are easily scratched by other items during transportation and handling, causing the tear lines to crack and affecting the subsequent packaging use of the PE film.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a multilayer barrier PE film, the structure of which includes a film body, the film body being provided with tear positioning creases, the tear positioning creases being punched with a plurality of tear grooves from front to back, and the film body also being provided with a protective adhesive structure covering and protecting the tear positioning creases and tear grooves.

[0006] The protective adhesive structure includes a pressure-sensitive adhesive tape adhered to the top surface of the membrane body, and the bottom surface of the pressure-sensitive adhesive tape extends and fills the tear groove to form an extension.

[0007] Furthermore, in order to improve the barrier effect, the membrane body includes a surface layer, an inner layer, and a barrier layer, wherein the barrier layer has multiple layers and is connected between the surface layer and the inner layer.

[0008] Furthermore, to facilitate tearing, the tearing groove is either a straight line or a V-shape.

[0009] Furthermore, to facilitate the tearing of pressure-sensitive adhesive tape, the bottom surface of the extension is flush with or slightly protrudes from the bottom surface of the membrane body.

[0010] Furthermore, in order to protect the surface of the tear groove, the width of the pressure-sensitive tape is greater than the width of the tear groove.

[0011] The beneficial effects of this utility model are: a protective adhesive structure is provided on the tearable multi-layer barrier PE film to cover and protect the tear positioning creases and tear grooves, which effectively prevents the tear line from cracking due to friction with other items, thereby affecting the subsequent packaging use of the PE film. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a top view of a partial structure of a multilayer barrier PE film according to the present invention.

[0014] Figure 2 This is a schematic diagram of a partial test cross-sectional structure of a multilayer barrier PE film according to the present invention.

[0015] Figure 3 This is a schematic diagram of a partial bottom view of the membrane structure.

[0016] In the diagram: membrane body-1, tear positioning crease-11, tear groove-12, protective adhesive structure-13, pressure-sensitive tape-131, surface layer-101, inner layer-102, barrier layer-103. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments. Example 1

[0018] Please see Figure 1 , Figure 2 , Figure 3 This utility model provides a multilayer barrier PE film technical solution: its structure includes a film body 1, the film body 1 is provided with tear positioning folds 11, the tear positioning folds 11 are punched with a plurality of tear grooves 12 from front to back, and the film body 1 is also provided with a protective adhesive tissue 13 covering and protecting the tear positioning folds 11 and the tear grooves 12.

[0019] like Figure 2 As shown, the protective adhesive structure 13 includes a pressure-sensitive adhesive tape 131 bonded to the top surface of the membrane body 1, and the bottom surface of the pressure-sensitive adhesive tape 131 extends and fills the tear groove 12 to form an extension.

[0020] To improve the barrier effect, the membrane body 1 includes a surface layer 101, an inner layer 102, and a barrier layer 103. The barrier layer 103 has multiple layers and is connected between the surface layer 101 and the inner layer 102.

[0021] The barrier layer 103 is made of EVOH material, which has excellent oxygen and water vapor barrier properties. It can effectively prevent oxygen and moisture from entering, thereby protecting the cosmetics and medicines inside the packaging from the influence of the external environment.

[0022] To facilitate tearing, the tearing groove 12 has a V-shaped structure.

[0023] like Figure 3 As shown, in order to facilitate the tearing of the pressure-sensitive adhesive tape 131, the bottom surface of the extension is flush with or slightly protrudes from the bottom surface of the membrane body 1, preferably flush.

[0024] In order to protect the surface of the tear groove 12, the width of the pressure-sensitive tape 131 is greater than the width of the tear groove 12.

[0025] Principle: During manufacturing, the heat-sensitive adhesive is evenly coated onto the film body 1. A thickness equalizer is used to control the coating thickness and uniformity, ensuring that the heat-sensitive adhesive accurately fills the tear groove 12, thereby forming a protective adhesive structure 13. During the winding and handling of the PE film, even if it rubs against other items, the protective adhesive structure 13 can protect the tear groove 12 from damage. When needed, the pressure-sensitive adhesive tape 131 is torn open. The pressure-sensitive adhesive tape 131 will drive the extension part, which pulls the tear groove 12, causing the tear groove 12 to deform, so as to facilitate the subsequent tearing of the PE film. Finally, the PE film can be torn open according to the tear positioning crease 11 for packaging. Example 2

[0026] For the sake of brevity, the parts that are the same as those in other embodiments will not be described again. The main focus is on the structure that is different from other embodiments of this utility model. The tearing groove 12 described in this application is in the shape of a straight line to facilitate processing.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multilayer barrier PE film, characterized in that: Its structure includes a membrane body (1), on which tear positioning creases (11) are provided, and several tear grooves (12) are punched from front to back in sequence. The membrane body (1) is also provided with a protective adhesive tissue (13) covering and protecting the tear positioning creases (11) and tear grooves (12). The protective adhesive structure (13) includes a pressure-sensitive adhesive tape (131) bonded to the top surface of the membrane body (1), and the bottom surface of the pressure-sensitive adhesive tape (131) extends to fill the tear groove (12) to form an extension.

2. The multilayer barrier PE film according to claim 1, characterized in that: The membrane body (1) includes a surface layer (101), an inner layer (102), and a barrier layer (103). The barrier layer (103) has multiple layers and is connected between the surface layer (101) and the inner layer (102).

3. The multilayer barrier PE film according to claim 1, characterized in that: The tearing groove (12) is one of the following structures: straight or V-shaped.

4. The multilayer barrier PE film according to claim 1, characterized in that: The bottom surface of the extension is flush with or slightly protrudes from the bottom surface of the membrane body (1).

5. The multilayer barrier PE film according to claim 1, characterized in that: The width of the pressure-sensitive tape (131) is greater than the width of the tear groove (12).

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