Anti-curling protective film

Abstract

The utility model discloses an anti-curl protective film, which belongs to the technical field of protective films and comprises a base layer, a surface layer is compounded on one side of the surface of the base layer, a composite layer is compounded between the base layer and the surface layer, and a reinforcing layer is compounded between the composite layer and the base layer. One side, facing the base body layer, of each of the end parts of the two sides of the surface of the surface layer is coated with a glue layer. The reinforcing layer and the composite layer are matched with other structural layers, the overall strength and stability of the protective film are further improved, the phenomenon that a film body is curled due to tension changes is reduced, the two ends of the surface layer protrude and are coated with the adhesive layers, the release film is torn off when the protective film is used, the protruding portions of the two ends of the protective film are further bonded and attached through the adhesive layers, and the protective film is used. The bonding firmness of the side edge connecting part is improved, and the edge warping phenomenon of the film body caused by the aging of the side edge adhesive after long-time use is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of protective films, in particular to an anti-curling protective film. Background Art

[0002] Protective film has a wide range of applications and is easy to operate. It is a practical product designed to solve the problems of object protection, isolation, and pollution prevention in people's life, work, study, entertainment, and production. In addition, most of these products have colloid residues after tearing off, which prevents secondary pollution and other problems. Currently, commonly used protective films include PP protective film, PE protective film, PET protective film, EPE pearl cotton, PO protective film, PVC protective film, etc., which are widely used.

[0003] The existing protective film has the following disadvantages during use: After being attached and used, especially after being used for a long time, the existing protective film is affected by the environment. In humid and high temperature usage scenarios, it will cause aging and shedding of the adhesive on the side of the film, which will cause the film to curl, deform, and warp. For this reason, we propose an anti-curling protective film. Utility Model Content

[0004] The main purpose of the utility model is to provide an anti-curling protective film, which can greatly improve the durability of the protective film, reduce warping and curling phenomena, and effectively solve the problems in the background technology by improving the material and structure of the protective film.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An anti-curling protective film comprises a base layer, a surface layer is compounded on one side of the base layer surface and a composite layer is compounded between the base layer and the surface layer, a reinforcing layer is compounded between the composite layer and the base layer, both side ends of the surface layer surface facing the base layer are coated with an adhesive layer, and a release film is bonded to the surface of the adhesive layer.

[0007] Furthermore, the material of the base layer is PET, and the material of the surface layer is HDPE; PET material as the base layer has good mechanical strength, and HDPE film as the surface layer has the characteristics of high strength, good toughness, and water and moisture resistance.

[0008] Furthermore, the reinforcing layer is made of glass fiber, and the composite layer is made of acrylic film; the glass fiber material is extruded into a film-like shape and then composited inside the film body, which can greatly improve the overall strength of the protective film. The composite layer is made of acrylic film, which is light, flexible, durable and aging-resistant.

[0009] Furthermore, both ends of the surface layer protrude outside the base layer, and the adhesive layer is made of acrylic latex. Adopting acrylic latex as the adhesive layer has very high initial viscosity and final viscosity after attachment, and the adhesive penetration rate is extremely low.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The utility model has the characteristics of high strength, good toughness, water and moisture resistance. A composite layer and a reinforcement layer are compounded inside the protective film, which can greatly improve the overall strength of the protective film. The composite layer is made of acrylic film, which is light, flexible, durable and aging-resistant. It cooperates with other structural layers to further improve the overall strength and stability of the protective film, and reduce the curling of the film caused by tension changes. The two ends of the surface layer are protruding and coated with an adhesive layer. When using the protective film, the release film is torn off, and the adhesive layer is used to further bond and fit the protruding parts of the two ends of the protective film, thereby improving the bonding firmness of the side connection and reducing the warping of the film caused by aging of the side adhesive due to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0014] In the figure: 1, base layer; 2, surface layer; 3, reinforcement layer; 4, composite layer; 5, adhesive layer; 6, release film. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0016] like Figure 1-2 As shown, an anti-curling protective film includes a base layer 1, a surface layer 2 is compounded on one side of the surface of the base layer 1, and a composite layer 4 is compounded between the base layer 1 and the surface layer 2, a reinforcing layer 3 is compounded between the composite layer 4 and the base layer 1, and both side ends of the surface of the surface layer 2 facing the base layer 1 are coated with an adhesive layer 5, and a release film 6 is bonded to the surface of the adhesive layer 5.

[0017] Specifically, the base layer 1 is made of PET, the surface layer 2 is made of HDPE, the reinforcement layer 3 is made of glass fiber, and the composite layer 4 is made of acrylic film; PET material as the base layer 1 has good mechanical strength, HDPE film as the surface layer 2 has the characteristics of high strength, good toughness, water resistance and moisture resistance, the glass fiber material is extruded into a film-like shape and then compounded inside the film body, which can greatly improve the overall strength of the protective film, and the composite layer 4 is made of acrylic film, which is light, flexible, durable and aging-resistant.

[0018] In addition, both ends of the surface layer 2 protrude to the outside of the base layer 1, and the adhesive layer 5 is made of acrylic latex. Using acrylic latex as the adhesive layer 5 has very high initial viscosity and final viscosity after attachment, and the adhesive penetration rate is extremely low.

[0019] When the anti-curling protective film is in use, the protective film body is composed of a base layer 1, a surface layer 2, a composite layer 4 and a reinforcement layer 3. The base layer 1 is made of PET and has good mechanical strength. The HDPE film is used as the surface layer 2, and has the characteristics of high strength, good toughness, water resistance and moisture resistance. The composite layer 4 and the reinforcement layer 3 are compounded inside the protective film. The reinforcement layer 3 is made of glass fiber, which is extruded into a film-like shape and then compounded inside the film body, which can greatly improve the overall strength of the protective film. The composite layer 4 is made of acrylic film, which has the characteristics of being light, flexible, durable and aging-resistant. It cooperates with other structural layers to further improve the overall strength and stability of the protective film and reduce the curling phenomenon of the film body caused by tension changes. The two ends of the surface layer 2 are protruding and coated with an adhesive layer 5. When the protective film is used, the release film 6 is torn off, and the adhesive layer 5 is used to further bond and fit the protruding parts at both ends of the protective film to improve the bonding firmness of the side connection and reduce the film body warping phenomenon caused by aging of the side adhesive due to long-term use.

[0020] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An anti-curling protective film, comprising a base layer (1), characterized in that: The surface layer (2) is compounded on one side of the surface of the base layer (1), and a composite layer (4) is compounded between the base layer (1) and the surface layer (2), and a reinforcing layer (3) is compounded between the composite layer (4) and the base layer (1), and both side ends of the surface of the surface layer (2) facing the side of the base layer (1) are coated with an adhesive layer (5), and a release film (6) is bonded to the surface of the adhesive layer (5).

2. The anti-curling protective film according to claim 1, characterized in that: The material of the base layer (1) is PET, and the material of the surface layer (2) is HDPE.

3. The anti-curling protective film according to claim 1, characterized in that: The reinforcing layer (3) is made of glass fiber, and the composite layer (4) is made of acrylic film.

4. The anti-curling protective film according to claim 1, characterized in that: Both ends of the surface layer (2) protrude to the outside of the base layer (1), and the adhesive layer (5) is made of acrylic latex.

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