Composite CPP high-barrier film

Abstract

The utility model provides a composite CPP high barrier film which comprises a barrier layer and release paper, the upper surface of the barrier layer is fixedly connected with an outer lining layer, the upper surface of the outer lining layer is fixedly connected with a wear-resistant layer, the lower surface of the barrier layer is fixedly connected with a sterilization layer, and the lower surface of the sterilization layer is fixedly connected with an inner lining layer. The release paper is fixedly connected to the lower surface of the lining layer, the tearing blocks are symmetrically connected to the two sides of the release paper, and meanwhile auxiliary grooves are correspondingly formed in the positions, opposite to the tearing blocks, of the two sides of the lining layer. Through the matching of the inner lining layer, the outer lining layer and the wear-resistant layer, the wear-resistant effect and the waterproof effect of the film can be effectively enhanced, then the probability that the barrier layer is corroded can be reduced, and the high barrier property of the film is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of films, in particular to a composite CPP high-barrier film. Background Art

[0002] CPP film is cast polypropylene film, also known as unstretched polypropylene film. According to different uses, it can be divided into general CPP (GCPP for short), metalized CPP (MCPP for short) and retort CPP (RCPP for short) films. CPP is a polypropylene (PP) film produced by cast extrusion process in the plastics industry. This type of film is different from BOPP (bidirectional polypropylene) film and is a non-oriented film. Strictly speaking, CPP film has a certain orientation only in the longitudinal (MD) direction, mainly due to the nature of the process. Through rapid cooling on the cold casting roller, excellent clarity and smoothness are formed on the film. However, the common CPP film has poor barrier effect when used, and some CPP films with metalized film as barrier layer are easily corroded by humid water vapor in the air, which reduces the service life of the barrier layer. At the same time, CPP film will produce a large number of bacteria when used for a long time, which is easy to cause damage to the metalized film and users, and the wear resistance of the CPP film surface needs to be enhanced. Utility Model Content

[0003] In order to overcome the defects of the prior art, a composite CPP high barrier film is provided to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, a composite CPP high barrier film is provided, comprising: a barrier layer and a release paper, wherein the upper surface of the barrier layer is fixedly connected to the outer lining layer, and the upper surface of the outer lining layer is fixedly connected to the wear-resistant layer, and the lower surface of the barrier layer is fixedly connected to the sterilization layer, and the lower surface of the sterilization layer is fixedly connected to the inner lining layer, the release paper is fixedly connected to the lower surface of the inner lining layer, and the two sides of the release paper are symmetrically connected to the tearing blocks, and auxiliary grooves are provided on both sides of the inner lining layer corresponding to the positions of the tearing blocks.

[0005] Preferably, the barrier layer is made of a vacuum aluminum-plated film, and the thickness of the barrier layer is greater than the thickness of the sterilization layer and the outer lining layer.

[0006] Preferably, the bactericidal layer is composed of a base film layer and a bactericidal substance, and the base film layer is made of CPP film, and the base film layer is fixedly connected to the lower surface of the barrier layer. At the same time, the bactericidal substance is silver ions, and the silver ions are fixedly connected to the lower surface of the base film layer by electroplating.

[0007] Preferably, multiple groups of tearing blocks are fixedly connected in parallel and equidistantly on both sides of the release paper, the tearing blocks are in a rectangular structure, and multiple groups of anti-skid grooves are provided in parallel and equidistantly on the upper and lower surfaces of the tearing blocks, and the anti-skid grooves are in a semi-cylindrical structure. At the same time, the anti-skid grooves on the upper and lower surfaces of the tearing blocks are vertically distributed in eccentric planes.

[0008] Preferably, the inner lining layer is made of polyethylene, and the thickness of the inner lining layer is greater than the thickness of the sterilization layer. At the same time, the auxiliary grooves on both sides of the inner lining layer relative to the tearing block are in a right-angled triangular prism structure.

[0009] Preferably, the outer lining layer is made of polyester, and the thickness of the outer lining layer is equal to the thickness of the inner lining layer.

[0010] Preferably, the wear-resistant layer is made of fluorocarbon coating, and the fluorocarbon coating is coated on the surface of the outer lining layer by thermal spraying, and the thickness of the wear-resistant layer is smaller than the thickness of the outer lining layer.

[0011] Compared with the prior art, the beneficial effect of the utility model is as follows: through the cooperation of the outer lining layer and the inner lining layer, the barrier layer can be wrapped inside the film, and both the outer lining layer and the inner lining layer have a good waterproof effect, which can then help reduce the probability of the barrier layer being corroded by water vapor and ensure the service life of the barrier layer. At the same time, the wear-resistant layer arranged on the outer side of the outer lining layer can not only help enhance the wear resistance of the outer surface of the film, but also improve the chemical stability of the outer surface of the film, and can also effectively reduce the probability of dust adhesion and improve the anti-fouling effect. In addition, the setting of the bactericidal layer enables the inner side of the film to have a good bactericidal effect, thereby preventing the film from producing a large number of bacteria after long-term use, thereby improving the safety of the film when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a partial structural schematic diagram of an embodiment of the utility model.

[0013] Figure 2 It is a front view schematic diagram of an embodiment of the utility model.

[0014] Figure 3 This is a schematic diagram of the structure of the sterilization layer of an embodiment of the utility model.

[0015] Figure 4 For the utility model embodiment Figure 1 An enlarged schematic diagram of point A.

[0016] In the figure: 1. Inner lining layer; 2. Sterilization layer; 3. Barrier layer; 4. Outer lining layer; 5. Wear-resistant layer; 6. Base film layer; 7. Sterilization substance; 8. Release paper; 9. Auxiliary groove; 10. Tear block. DETAILED DESCRIPTION

[0017] Reference Figures 1 to 4As shown, the utility model provides a composite CPP high barrier film, comprising: a barrier layer 3 and a release paper 8, the upper surface of the barrier layer 3 is fixedly connected to the outer lining layer 4, and the upper surface of the outer lining layer 4 is fixedly connected to the wear-resistant layer 5, and the lower surface of the barrier layer 3 is fixedly connected to the sterilization layer 2, and the lower surface of the sterilization layer 2 is fixedly connected to the inner lining layer 1, the release paper 8 is fixedly connected to the lower surface of the inner lining layer 1, and the two sides of the release paper 8 are symmetrically connected to the tearing blocks 10, and auxiliary grooves 9 are provided on both sides of the inner lining layer 1 corresponding to the positions of the tearing blocks 10.

[0018] In this embodiment, the sterilization layer 2 fixedly connected to the lower surface of the barrier layer 3 enables the composite CPP high barrier film to have a good sterilization effect during use, thereby effectively reducing the probability of the composite CPP high barrier film generating a large number of bacteria after long-term use, ensuring the safety of the composite CPP high barrier film during use, and the inner lining layer 1 fixedly connected to the lower surface of the sterilization layer 2 can not only enhance the waterproof effect of the inner side of the composite CPP high barrier film, but also ensure the safety of the inner lining layer 1 package, and prevent toxic substances from adhering to the surface of the package, and the outer lining layer 4 fixedly connected to the upper surface of the barrier layer 3 can not only enhance the waterproof effect of the outer side of the composite CPP high barrier film The effect is also convenient for printing corresponding information on the surface of the film. At the same time, the wear-resistant layer 5 sprayed on the surface of the outer lining layer 4 can effectively enhance the chemical stability of the outer side of the composite CPP high barrier film, improve the corrosion resistance to acids, alkalis and salts, and can also reduce the probability of dust adhesion and improve the anti-fouling effect while enhancing the wear resistance of the composite CPP high barrier film. At the same time, when the composite CPP high barrier film needs to be used, the user pinches the tear block 10 with one hand and embeds the fingernails of the other hand into the auxiliary groove 9, and both hands move in opposite directions at the same time, so that the release paper 8 of the composite CPP high barrier film can be easily torn off, thereby helping to improve the convenience of using the composite CPP high barrier film.

[0019] As a preferred embodiment, the barrier layer 3 is made of a vacuum aluminum-plated film, and the thickness of the barrier layer 3 is greater than the thickness of the sterilization layer 2 and the outer lining layer 4.

[0020] In this embodiment, if Figure 1 and Figure 2 The vacuum aluminum-plated film used in the barrier layer 3 has excellent folding resistance and good toughness, and the aluminum-plated layer has good conductivity, which can help the film eliminate the static electricity effect, and also ensure that the film has good high barrier properties.

[0021] As a preferred embodiment, the bactericidal layer 2 is composed of a base film layer 6 and a bactericidal substance 7, and the base film layer 6 adopts a CPP film, and the base film layer 6 is fixedly connected to the lower surface of the barrier layer 3, and the bactericidal substance 7 adopts silver ions, and the silver ions are fixedly connected to the lower surface of the base film layer 6 by electroplating.

[0022] In this embodiment, if Figure 2 and Figure 3 The base film layer 6 is made of CPP film, which is convenient for the attachment of the bactericidal substance 7 and has good heat and moisture resistance, thereby helping to reduce the probability of the barrier layer 3 contacting water vapor and reducing the probability of the barrier layer 3 being corroded. At the same time, the provision of the bactericidal substance 7 can ensure that the interior of the composite CPP high barrier film can have a corresponding bactericidal effect, and then can effectively reduce the probability of the film producing a large number of bacteria during long-term use, thereby ensuring the safety of the film during use, and can also perform corresponding auxiliary sterilization on the items wrapped by the film, thereby improving the preservation effect of the wrapped items.

[0023] As a preferred embodiment, multiple groups of tearing blocks 10 are fixedly connected in parallel and equidistantly on both sides of the release paper 8, the tearing blocks 10 are of a rectangular structure, and multiple groups of anti-skid grooves are provided in parallel and equidistantly on the upper and lower surfaces of the tearing blocks 10, and the anti-skid grooves are of a semi-cylindrical structure. At the same time, the anti-skid grooves on the upper and lower surfaces of the tearing blocks 10 are vertically distributed in eccentric planes.

[0024] In this embodiment, if Figure 1 and Figure 2 The provision of the tearing block 10 can help reduce the difficulty of tearing off the release paper 8, thereby facilitating the convenience of using the composite CPP high barrier film. At the same time, the vertically distributed anti-slip grooves on the upper and lower surfaces of the tearing block 10 can effectively reduce the probability of the user's hand slipping when holding the tearing block 10.

[0025] As a preferred embodiment, the inner lining layer 1 is made of polyethylene, and the thickness of the inner lining layer 1 is greater than the thickness of the sterilization layer 2. At the same time, the auxiliary grooves 9 opened on both sides of the inner lining layer 1 relative to the tearing block 10 are in a right-angled triangular prism structure.

[0026] In this embodiment, if Figure 1 and Figure 2 The polyethylene material used in the inner lining layer 1 is non-toxic and odorless, thereby ensuring the safety of the items wrapped in the film and preventing the wrapped items from unexpected toxic substances or odors. At the same time, the auxiliary grooves 9 formed by embossing on both sides of the inner lining layer 1 can help reduce the difficulty of tearing off the release paper 8, thereby avoiding the problem of wrinkles at the edge of the composite CPP high barrier film caused by tearing off the release paper 8.

[0027] As a preferred embodiment, the outer lining layer 4 is made of polyester, and the thickness of the outer lining layer 4 is equal to the thickness of the inner lining layer 1 .

[0028] In this embodiment, if Figure 1 and Figure 2The outer lining layer 4 is made of polyester material, which has good wear resistance, excellent optical properties, and is easy to print, and can help enhance the printing effect of the outer surface of the film.

[0029] As a preferred embodiment, the wear-resistant layer 5 is made of fluorocarbon coating, and the fluorocarbon coating is coated on the surface of the outer lining layer 4 by thermal spraying, and the thickness of the wear-resistant layer 5 is less than the thickness of the outer lining layer 4.

[0030] In this embodiment, if Figure 1 and Figure 2 The fluorocarbon coating used in the wear-resistant layer 5 has unique non-stickiness and low friction, which can not only prevent dust from adhering and improve the anti-fouling performance of the CPP film, but also assist in enhancing the chemical stability of the outer surface of the CPP film and improve the effect of acid, alkali and salt corrosion resistance.

[0031] The composite CPP high barrier film of the utility model can effectively enhance the wear resistance and waterproof effect of the film through the cooperation of the inner lining layer 1, the outer lining layer 4 and the wear-resistant layer 5, thereby reducing the probability of the barrier layer 3 being corroded, ensuring the high barrier property of the film, and also effectively enhancing the overall chemical stability of the outer surface of the film.

Claims

1. A composite CPP high barrier film, comprising: The barrier layer (3) and the release paper (8) are characterized in that: the upper surface of the barrier layer (3) is fixedly connected to the outer lining layer (4), and the upper surface of the outer lining layer (4) is fixedly connected to the wear-resistant layer (5), and the lower surface of the barrier layer (3) is fixedly connected to the sterilization layer (2), and the lower surface of the sterilization layer (2) is fixedly connected to the inner lining layer (1), and the release paper (8) is fixedly connected to the lower surface of the inner lining layer (1), and the two sides of the release paper (8) are symmetrically connected to the tearing blocks (10), and auxiliary grooves (9) are provided on the two sides of the inner lining layer (1) corresponding to the positions of the tearing blocks (10).

2. The composite CPP high barrier film according to claim 1, characterized in that: The barrier layer (3) is made of a vacuum aluminum-plated film, and the thickness of the barrier layer (3) is greater than the thickness of the sterilization layer (2) and the outer lining layer (4).

3. The composite CPP high barrier film according to claim 1, characterized in that: The bactericidal layer (2) is composed of a base film layer (6) and a bactericidal substance (7), wherein the base film layer (6) is made of a CPP film, and the base film layer (6) is fixedly connected to the lower surface of the barrier layer (3), and the bactericidal substance (7) is made of silver ions, and the silver ions are fixedly connected to the lower surface of the base film layer (6) by electroplating.

4. The composite CPP high barrier film according to claim 1, characterized in that: Multiple groups of tearing blocks (10) are fixedly connected to both sides of the release paper (8) in parallel and at equal intervals. The tearing blocks (10) are rectangular in structure, and multiple groups of anti-skid grooves are arranged on the upper and lower surfaces of the tearing blocks (10) in parallel and at equal intervals. The anti-skid grooves are all semi-cylindrical in structure. At the same time, the anti-skid grooves on the upper and lower surfaces of the tearing blocks (10) are vertically distributed in different planes.

5. The composite CPP high barrier film according to claim 1, characterized in that: The inner lining layer (1) is made of polyethylene, and the thickness of the inner lining layer (1) is greater than the thickness of the sterilization layer (2). At the same time, the auxiliary grooves (9) opened on both sides of the inner lining layer (1) relative to the tearing block (10) are in a right-angled triangular prism structure.

6. The composite CPP high barrier film according to claim 1, characterized in that: The outer lining layer (4) is made of polyester material, and the thickness of the outer lining layer (4) is equal to the thickness of the inner lining layer (1).

7. The composite CPP high barrier film according to claim 1, characterized in that: The wear-resistant layer (5) is made of fluorocarbon paint, and the fluorocarbon paint is coated on the surface of the outer lining layer (4) by thermal spraying, and the thickness of the wear-resistant layer (5) is smaller than the thickness of the outer lining layer (4).

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