Anti-fracture wrapping film

Abstract

The utility model discloses an anti-fracture wrapping film which comprises a PE wrapping film layer, one face of the PE wrapping film layer is connected with a first longitudinal reinforcing strip, the anti-fracture performance of the first longitudinal reinforcing strip is better than that of the PE wrapping film layer, and the first longitudinal reinforcing strip and the PE wrapping film layer are bonded through glue. A first longitudinal reinforcing strip is formed between the first longitudinal reinforcing strip and the PE wrapping film layer, and a first longitudinal bonding strip layer is formed between the first longitudinal reinforcing strip and the PE wrapping film layer, and relates to the technical field of wrapping films, longitudinal reinforcing strips or / and transverse reinforcing strips made of PET are bonded on the PE wrapping film layer, and the fracture resistance of the PE wrapping film is greatly improved due to the fact that the fracture resistance of the PET is better than that of the PE; due to the fact that the longitudinal reinforcing strips and the transverse reinforcing strips are bonded to the PE wrapping film layer through the glue, the PE wrapping film is simple in structure, production of the PE wrapping film is fast, and the production cost of the PE wrapping film is low.

Description

Technical Field

[0001] This utility model relates to the field of stretch film technology, specifically to a fracture-resistant stretch film. Background Technology

[0002] Utility model patent CN221476402U discloses a fracture-resistant wrapping film, comprising a main base layer, with reinforcing layers bonded to both the upper and lower sides of the main base layer. An upper base layer and a lower base layer are bonded to the outer sides of the reinforcing layers on both sides, respectively. The reinforcing layers stretch when subjected to pressure from sharp corners of objects during use, ensuring toughness and strength, increasing practicality and strength, and reducing wrapping film consumption. The reinforcing layer includes a mesh layer and a main interlayer. The main interlayer is bonded to the upper and lower sides of the mesh layer via curved mesh layers, and the curved mesh layers are also bonded to the upper and lower sides of the mesh layer. The main interlayer wraps around the mesh layer, and the combination of the curved mesh layers and the mesh layer increases the overall strength and toughness of the reinforcing layer, thereby increasing overall strength during use and preventing breakage under pressure from corners of objects. The curved mesh layer includes a horizontal curved mesh layer and a vertical curved mesh layer, which are bonded together, with the horizontal curved mesh layer adhering to the main interlayer. The horizontal and vertical curved mesh layers, when subjected to pressure, will experience varying degrees of stretching depending on the pressure applied. Since these layers are bonded to the main interlayer, they are subjected to lateral pulling forces and are also affected by the toughness of the curved mesh layers, preventing the stretch film from breaking. The main interlayer is made of PET, and the mesh layer is made of PP. The sum of the thicknesses of the two main interlayers is the same as the sum of the thicknesses of the mesh layer and the curved mesh layer. Both PET and PP materials have high toughness and strength, thus ensuring improved overall toughness and strength of the stretch film during use. The main base layer is bonded to the reinforcing layer with PET adhesive, and the outer sides of both reinforcing layers are bonded to the upper and lower base layers respectively with PET adhesive. The PET adhesive does not affect color changes during use, facilitating internal observation. When this invention is subjected to pressure from a sharp point during use, the curved mesh layer will deform and stretch due to the force. Because the internal structure is curved, the curved mesh layer will be gradually stretched during stretching, and the internal curved layer will also be stretched. It will not break when stretched and straightened, thus increasing the threshold of the stretching limit and increasing the overall toughness of the wrapping film, ensuring that it will not be punctured by sharp objects. Through the design of the horizontal and vertical curved mesh layers, when subjected to tension during use, they will be straightened. During the straightening process, the horizontal curved mesh layer adheres to the main interlayer, locking the main interlayer from being torn. The fact that the main interlayer is not torn ensures that the upper and lower base layers are not torn, thereby ensuring that the whole structure will not be torn, increasing the overall toughness and strength.

[0003] The aforementioned patent has the following shortcomings:

[0004] The film has a nine-layer structure consisting of a main base layer, a reinforcing layer, an upper base layer, a lower base layer, a mesh layer, a main interlayer, a horizontal curve mesh layer, a vertical curve mesh layer, and a curved mesh layer. This not only greatly increases the difficulty of producing the stretch film but also significantly raises its production cost. Utility Model Content

[0005] In view of the problems existing in the current anti-fracture winding film, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a fracture-resistant wrapping film, which solves the problem of the above-mentioned patent having a 9-layer structure consisting of a main base layer, a reinforcing layer, an upper base layer, a lower base layer, a mesh layer, a main interlayer, a horizontal curve mesh layer, a vertical curve mesh layer, and a curved mesh layer. This not only greatly increases the difficulty of wrapping film production but also significantly increases the production cost of wrapping film.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] A fracture-resistant wrapping film includes a PE wrapping film layer, one side of which is connected to a first longitudinal reinforcing strip, the fracture resistance of which is superior to that of the PE wrapping film layer.

[0009] In a preferred embodiment of the anti-breakage wrapping film of this utility model, the first longitudinal reinforcing strip and the PE wrapping film layer are bonded together with adhesive, and a first longitudinal adhesive strip layer is formed between the first longitudinal reinforcing strip and the PE wrapping film layer.

[0010] As a preferred embodiment of the anti-fracture wrapping film of this utility model, there are multiple first longitudinal reinforcing strips, and each first longitudinal reinforcing strip is distributed at equal distances. The thickness of the first longitudinal reinforcing strip is set to half the thickness of the PE wrapping film layer.

[0011] In a preferred embodiment of the anti-breakage wrapping film described in this utility model, the first longitudinal reinforcing strip is made of PET material.

[0012] As a preferred embodiment of the anti-breakage wrapping film of this utility model, a first transverse reinforcing strip is adhered to the PE wrapping film layer, the first transverse reinforcing strip and the PE wrapping film layer are bonded together by adhesive, a first transverse adhesive strip layer is formed between the first transverse reinforcing strip and the PE wrapping film layer, the first transverse reinforcing strip is made of PET material, and the thickness of the first transverse reinforcing strip is set to half the thickness of the PE wrapping film layer.

[0013] As a preferred embodiment of the anti-breakage wrapping film of this utility model, a second longitudinal reinforcing strip is adhered to the other side of the PE wrapping film layer, and a second longitudinal adhesive strip layer is formed between the second longitudinal reinforcing strip and the PE wrapping film layer. The second longitudinal reinforcing strip is made of PET material, and the thickness of the second longitudinal reinforcing strip is set to half the thickness of the PE wrapping film layer.

[0014] As a preferred embodiment of the anti-breakage wrapping film of this utility model, a second transverse reinforcing strip is adhered to the PE wrapping film layer, the second transverse reinforcing strip and the PE wrapping film layer are bonded together by adhesive, a second transverse adhesive strip layer is formed between the second transverse reinforcing strip and the PE wrapping film layer, the second transverse reinforcing strip is made of PET material, and the thickness of the second transverse reinforcing strip is set to half the thickness of the PE wrapping film layer.

[0015] Compared with existing technologies:

[0016] 1. By bonding longitudinal or transverse reinforcing strips made of PET material to the PE stretch film, the tear resistance of the PE stretch film is greatly improved because the tear resistance of PET material is better than that of PE material.

[0017] 2. Since both the longitudinal and transverse reinforcing strips are glued to the PE stretch film layer, the structure of the PE stretch film is not only simple, but also the production of the PE stretch film is fast and the production cost of the PE stretch film is low. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0019] Figure 2 Provided for Embodiment 1 of this utility model Figure 1 Top view;

[0020] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0021] Figure 4 Provided for Embodiment 2 of this utility model Figure 3 Side view;

[0022] Figure 5 This is a structural schematic diagram of Embodiment 3 of the present utility model;

[0023] Figure 6 Provided for Embodiment 4 of this utility model Figure 5 A side view.

[0024] In the diagram: PE wrapping film layer 1, first longitudinal adhesive strip layer 2, first longitudinal reinforcing strip 3, first transverse reinforcing strip 4, first transverse adhesive strip layer 5, second longitudinal adhesive strip layer 6, second longitudinal reinforcing strip 7, second transverse adhesive strip layer 8, second transverse reinforcing strip 9. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0026] Example 1:

[0027] This utility model provides an anti-breakage winding film. Please refer to [link / reference]. Figure 1-2 The PE wrapping film 1 is included. One side of the PE wrapping film 1 is connected to a first longitudinal reinforcing strip 3. The first longitudinal reinforcing strip 3 is made of PET material. The thickness of the first longitudinal reinforcing strip 3 is half the thickness of the PE wrapping film 1. The fracture resistance of the first longitudinal reinforcing strip 3 is better than that of the PE wrapping film 1.

[0028] The first longitudinal reinforcing strip 3 and the PE wrapping film 1 are bonded together with adhesive, forming a first longitudinal bonding strip layer 2 between the first longitudinal reinforcing strip 3 and the PE wrapping film 1.

[0029] Multiple first longitudinal reinforcing strips 3 are provided, and each first longitudinal reinforcing strip 3 is distributed at equal intervals. The fracture resistance of PET material is better than that of PE material. Therefore, the fracture resistance of PE wrapping film layer 1 can be effectively improved by the reinforcement of the first longitudinal reinforcing strips 3.

[0030] Example 2:

[0031] See attached document Figure 3-4 Unlike Example 1, a first transverse reinforcing strip 4 is adhered to the PE wrapping film 1. The first transverse reinforcing strip 4 is made of PET material and its thickness is half the thickness of the PE wrapping film 1. The first transverse reinforcing strip 4 and the PE wrapping film 1 are bonded together with adhesive, forming a first transverse adhesive strip layer 5 between them. With the further reinforcement of the first transverse reinforcing strip 4, the fracture resistance of the PE wrapping film 1 is further improved.

[0032] Example 3:

[0033] See attached document Figure 5Unlike Example 1, a second longitudinal reinforcing strip 7 is bonded to the other side of the PE wrapping film layer 1, forming a second longitudinal adhesive strip layer 6 between the second longitudinal reinforcing strip 7 and the PE wrapping film layer 1. The second longitudinal reinforcing strip 7 is made of PET material, and its thickness is set to half the thickness of the PE wrapping film layer 1. At this time, the PE wrapping film has a symmetrical structure, so both sides of the PE wrapping film can contact and wrap with the item, while further enhancing the anti-breakage performance of the PE wrapping film.

[0034] Example 4:

[0035] See attached document Figure 6 Unlike Example 2, a second transverse reinforcing strip 9 is adhered to the PE wrapping film layer 1. The second transverse reinforcing strip 9 and the PE wrapping film layer 1 are bonded together with adhesive, forming a second transverse adhesive strip layer 8 between the second transverse reinforcing strip 9 and the PE wrapping film layer 1. The second transverse reinforcing strip 9 is made of PET material, and its thickness is set to half the thickness of the PE wrapping film layer 1. Similarly, this further enhances the tear resistance of the PE wrapping film.

[0036] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A break-resistant wrapping film comprising a PE wrapping film layer (1), characterized in that: One side of the PE wrapping film (1) is connected to a first longitudinal reinforcing strip (3), and the first longitudinal reinforcing strip (3) has better anti-breakage performance than the PE wrapping film (1). The first longitudinal reinforcing strip (3) and the PE wrapping film (1) are bonded together with adhesive, and a first longitudinal adhesive strip layer (2) is formed between the first longitudinal reinforcing strip (3) and the PE wrapping film (1). There are multiple first longitudinal reinforcing strips (3), and each first longitudinal reinforcing strip (3) is distributed at equal distances. The thickness of the first longitudinal reinforcing strip (3) is set to half the thickness of the PE wrapping film layer (1).

2. The anti-breakage wrapping film according to claim 1, characterized in that, The first longitudinal reinforcing strip (3) is made of PET material.

3. The break-resistant wrapping film according to claim 1, wherein A first transverse reinforcing strip (4) is bonded to the PE wrapping film (1). The first transverse reinforcing strip (4) and the PE wrapping film (1) are bonded together by adhesive. A first transverse adhesive strip layer (5) is formed between the first transverse reinforcing strip (4) and the PE wrapping film (1). The first transverse reinforcing strip (4) is made of PET material, and the thickness of the first transverse reinforcing strip (4) is set to half the thickness of the PE wrapping film (1).

4. The break-resistant wrapping film according to claim 2, wherein A second longitudinal reinforcing strip (7) is bonded to the other side of the PE wrapping film (1). A second longitudinal adhesive strip layer (6) is formed between the second longitudinal reinforcing strip (7) and the PE wrapping film (1). The second longitudinal reinforcing strip (7) is made of PET material and its thickness is half the thickness of the PE wrapping film (1).

5. The anti-breakage wrapping film according to claim 3, characterized in that, A second transverse reinforcing strip (9) is bonded to the PE wrapping film (1). The second transverse reinforcing strip (9) and the PE wrapping film (1) are bonded together with adhesive. A second transverse adhesive strip layer (8) is formed between the second transverse reinforcing strip (9) and the PE wrapping film (1). The second transverse reinforcing strip (9) is made of PET material, and the thickness of the second transverse reinforcing strip (9) is half the thickness of the PE wrapping film (1).

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