CN216639368U

CN216639368U - Prevent curling protection film

Info

Publication number: CN216639368U
Application number: CN202123437353.2U
Authority: CN
Inventors: 张卫彪
Original assignee: Wuxi Sanli Protective Film Co ltd
Current assignee: Wuxi Sanli Protective Film Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-31
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses an anti-curling protective film, and relates to the technical field of protective film production. The utility model discloses an anti-curling protective film which comprises a protective film main body, an EVA (ethylene vinyl acetate) pressure-sensitive adhesive layer, an ultraviolet absorption layer and a waterproof layer, wherein the protective film main body is connected with a base material through a self-adhesive layer; the protective film main body comprises a PE base layer, an aramid fiber layer, an adhesive layer, a heat insulation layer and an anti-curling layer, wherein the aramid fiber layer is laid on the upper surface of the PE base layer and is connected with the heat insulation layer through the adhesive layer, and the anti-curling layer is arranged on the heat insulation layer; the anti-curling layer upper surface is provided with EVA pressure sensitive adhesive layer, EVA pressure sensitive adhesive layer with be provided with between the waterproof layer the ultraviolet absorption layer. The anti-curling protective film provided by the utility model has high cohesiveness, waterproofness and aging resistance, solves the problem that the protective film is easy to curl under the influence of environment, and has longer service life.

Description

Prevent curling protection film

Technical Field

The utility model belongs to the technical field of production of protective films, and particularly relates to an anti-curling protective film.

Background

The protective film has wide application range and simple and convenient operability, is a practical product, and aims to solve the problems of object protection, isolation, pollution prevention and the like in people's life, work, study, entertainment and production, and the problems of secondary pollution and the like caused by residual colloid after most of products are torn off. The protective films commonly used at present comprise a PP protective film, a PE protective film, a PET protective film, EPE pearl cotton, a PO protective film, a PVC protective film and the like, the protective films are stuck on an object product to prevent pollution or damage, and the protective films are easy to tear off when the object needs to be used, and no colloid is remained on the surface of the object.

In the sticking process of the protective film, due to the characteristics of good elasticity and easy stretching of the protective film, the protective film is stretched and deformed under the action of tension in the rolling or traction process, so that the protective film is curled after being stuck. In addition, in the using process, the protective film is on the surface of the product and is easy to age and denature under the influence of environmental factors (such as humidity, illumination, high temperature and freezing), so that the edge of the protective film is curled, the adhesive property is poor, and the adhesive effect and the protective effect of the protective film on the product are influenced. In the process of preparing and using the protective film, the protective film is easy to curl due to the action of expansion with heat and contraction with cold, so that the adhesiveness and the service life of the protective film are influenced, and the service life and the product quality of a protected object are reduced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an anti-curling protective film which has high cohesiveness, waterproofness and aging resistance, is easy to tear and not easy to fall off, solves the problem that the protective film is easy to curl under the influence of environment, and has longer service life.

In order to solve the technical problem, the utility model provides an anti-curling protective film which comprises a protective film main body, an EVA (ethylene vinyl acetate) pressure-sensitive adhesive layer, an ultraviolet absorption layer and a waterproof layer, wherein the protective film main body is connected with a base material through a self-adhesive layer;

the protective film main body comprises a PE (polyethylene) base layer, an aramid fiber layer, an adhesive layer, a heat insulation layer and an anti-curling layer, wherein the aramid fiber layer is laid on the upper surface of the PE base layer and is connected with the heat insulation layer through the adhesive layer, the lower surface of the PE base layer is connected with the self-adhesive layer, and the anti-curling layer is arranged on the heat insulation layer;

the anti-curling layer upper surface is provided with EVA pressure sensitive adhesive layer, EVA pressure sensitive adhesive layer with be provided with between the waterproof layer the ultraviolet absorption layer.

Further, the PE base layer is a PE/PP composite film.

Furthermore, the aramid fiber layer is formed by laying reticular aramid fiber yarns, and the thickness of the aramid fiber layer is 2-4 microns.

Further, the anti-curling layer is a cellulose acetate phthalate film, and the thickness of the anti-curling layer is 20-40 mu m.

Further, the heat insulation layer is a composite silicate heat insulation coating, and the thickness of the heat insulation layer is 5-10 μm.

Further, the waterproof layer is a silane modified polyurethane coating, and the thickness of the waterproof layer is 10-15 microns.

The utility model achieves the following beneficial effects:

the protective film main body is provided with the PE base layer, the aramid fiber layer, the adhesive layer, the heat insulation layer and the anti-curling layer, and the arrangement of the reticular aramid fiber yarns on the upper surface of the PE base layer improves the mechanical strength and toughness of the protective film, so that the protective film is not easy to deform when being subjected to tensile force or traction force, and further improves the anti-curling capability of the protective film; the arrangement of the heat-insulating layer of the composite silicate improves the heat-resisting and heat-insulating effects of the PE base layer, improves the mechanical strength of the protective film, is not easy to stretch and deform, and avoids the PE base layer from being curled due to expansion with heat and contraction with cold; the anti-curling layer made of cellulose acetate phthalate has excellent anti-curling effect, has better cohesiveness with the heat-insulating layer, and does not need to coat an adhesive between the heat-insulating layer and the anti-curling layer; the protective film main body adopts the combination of the PE base layer, the aramid fiber layer, the heat insulation layer and the anti-curling layer, so that the anti-curling property of the protective film is obviously improved, and the protective film has excellent heat-resistant heat preservation property and mechanical strength.

The protective film is provided with the waterproof property on the protective film main body, so that the waterproof property of the protective film is improved, the protective film is prevented from being denatured by moisture, and the durability of the adhesive property of the protective film is ensured; the arrangement of the EVA pressure-sensitive adhesive layer between the anti-curling layer and the ultraviolet absorption layer can improve the water resistance and the heat insulation of the protective film besides ensuring the cohesiveness between the layers, and reduce the curling probability of the protective film main body.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural diagram of an embodiment of an anti-curl protective film of the present invention.

The attached drawings are as follows: 1. a PE base layer; 2. a self-adhesive layer; 3. an aramid fiber layer; 4. an adhesive layer; 5. a thermal insulation layer; 6. an anti-curl layer; 7. an EVA pressure-sensitive adhesive layer; 8. an ultraviolet absorbing layer; 9. and a waterproof layer.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.

The present application will be described in further detail below with reference to the accompanying drawings, but the present application is not limited thereto.

As shown in fig. 1, the anti-curling protective film according to the embodiment of the utility model includes a protective film main body, an EVA pressure sensitive adhesive layer 7, an ultraviolet absorption layer 8 and a waterproof layer 9, wherein the protective film main body is connected with a base material through a self-adhesive layer 2. The self-adhesive layer 2 mainly bonds the protective film main body with the base material, and the preferred self-adhesive layer 2 is a polyurethane adhesive, an epoxy resin adhesive, a polyvinyl acetal adhesive, a rubber adhesive and the like, and is selected according to different base materials so as to improve the bonding effect between the protective film main body and the base material.

As shown in fig. 1, the upper surface of the protective film main body is provided with an EVA pressure sensitive adhesive layer 7, the EVA pressure sensitive adhesive layer 7 is formed by coating EVA pressure sensitive adhesive, and an ultraviolet absorption layer 8 is arranged between the EVA pressure sensitive adhesive layer 7 and the waterproof layer 9. The EVA pressure sensitive adhesive layer 7 enables good adhesion between the protective film main body and the ultraviolet absorption layer 8, and can also improve the water resistance and heat insulation of the protective film and reduce the probability of curling of the protective film main body. Preferably, the waterproof layer 9 is a silane modified polyurethane coating, and the thickness of the waterproof layer 9 is 10-15 μm. The silane modified polyurethane coating has excellent waterproofness, weather resistance and stability, can be used as the waterproof layer 9, has better adhesion with the ultraviolet absorption layer 8, and can also improve the waterproofness and the weather resistance of the protective film, so that the protective film is not easily influenced by moisture, ultraviolet rays, chemicals and the like, and the service life of the protective film is prolonged. The ultraviolet absorption layer 8 is formed by coating an ultraviolet absorbent, and is used for improving the aging resistance of the protective film and improving the bonding durability of the protective film.

As shown in fig. 1, the protective film main body includes a PE base layer 1, an aramid layer 3, an adhesive layer 4, a heat insulating layer 5, and an anti-curling layer 6. The PE base layer 1 is a PE/PP composite film, the PE/PP composite film is prepared by mixing 30-50 parts by weight of low-density polyethylene, 30-50 parts by weight of linear low-density polyethylene, 2-12 parts by weight of polypropylene and 2-12 parts by weight of low-pressure polyethylene, and the PE/PP composite film cannot generate large deformation along with the effects of expansion with heat and contraction with cold in the preparation process, so that the protective film has good curling performance.

As shown in figure 1, a layer of aramid fiber layer 3 is laid on the upper surface of a PE base layer 1, the aramid fiber layer 3 is connected with a heat insulation layer 5 through an adhesive layer 4, the lower surface of the PE base layer 1 is connected with a self-adhesive layer 2, and an anti-curling layer 6 is arranged on the heat insulation layer 5. The aramid fiber layer 3 is formed by laying reticular aramid fiber yarns, and the thickness of the aramid fiber layer 3 is 2-4 mu m. The structure and the material of the reticular aramid fiber yarn can not only improve the mechanical strength of the protective film, but also increase the toughness, so that the protective film is not easy to deform when being subjected to pulling force or traction force, and further the anti-curling capability of the protective film is improved. This aramid fiber layer 3 thickness's setting makes it not influence the appearance and increase cost's basis, still has better mechanical strength and prevents the ability of curling.

As shown in figure 1, the composite silicate coating is set as a heat insulation layer 5, the thickness of the heat insulation layer 5 is 5-10 μm, the heat-resistant and heat-preservation effects of the PE base layer 1 are improved, the mechanical strength of the protective film is improved, the protective film is not prone to stretching deformation, and the PE base layer 1 is prevented from being curled due to thermal expansion and cold contraction deformation. The anti-curling layer 6 made of cellulose acetate phthalate has the thickness of 20-40 mu m, has excellent anti-curling effect, has better cohesiveness with the heat-insulating layer 5, and does not need to be coated with an adhesive between the heat-insulating layer 5 and the anti-curling layer 6.

The protective film main body adopts the combination of the PE base layer 1, the aramid fiber layer 3, the thermal insulation layer 5 and the anti-curling layer 6, so that the anti-curling property of the protective film is obviously improved, and the protective film has excellent heat-resistant heat preservation property and mechanical strength.

Example 1

As shown in fig. 1, the anti-curling protective film according to embodiment 1 of the present invention includes a protective film main body, an EVA pressure sensitive adhesive layer 7, an ultraviolet absorbing layer 8, and a waterproof layer 9, and the protective film main body is connected to a base material through a self-adhesive layer 2. The upper surface of the protective film main body is provided with an EVA pressure-sensitive adhesive layer 7, and an ultraviolet absorption layer 8 is arranged between the EVA pressure-sensitive adhesive layer 7 and the waterproof layer 9. The waterproof layer 9 is a silane modified polyurethane coating, and the thickness of the waterproof layer 9 is 10 micrometers.

As shown in fig. 1, the protective film main body includes a PE base layer 1, an aramid layer 3, an adhesive layer 4, a heat insulating layer 5, and an anti-curling layer 6. The PE base layer 1 is a PE/PP composite film which is prepared by mixing 40 parts by weight of low-density polyethylene, 40 parts by weight of linear low-density polyethylene, 8 parts by weight of polypropylene and 8 parts by weight of low-pressure polyethylene. One deck aramid fiber layer 3 is laid to 1 upper surface of PE basic unit, and aramid fiber layer 3 links to each other with insulating layer 5 through adhesive layer 4, and 1 lower surface of PE basic unit links to each other with self-adhesive layer 2, is provided with anti-curling layer 6 above the insulating layer 5. The aramid fiber layer 3 is formed by laying reticular aramid fiber yarns, and the thickness of the aramid fiber layer 3 is 2 mu m. The composite silicate coating is set as a heat insulation layer 5, and the thickness of the heat insulation layer 5 is 5 micrometers. The anti-curl layer 6 made of cellulose acetate phthalate was used, and the thickness was set to 20 μm.

Example 2

As shown in fig. 1, the anti-curling protective film according to embodiment 2 of the present invention includes a protective film main body, an EVA pressure sensitive adhesive layer 7, an ultraviolet absorbing layer 8, and a waterproof layer 9, and the protective film main body is connected to a base material through a self-adhesive layer 2. The upper surface of the protective film main body is provided with an EVA pressure-sensitive adhesive layer 7, and an ultraviolet absorption layer 8 is arranged between the EVA pressure-sensitive adhesive layer 7 and the waterproof layer 9. The waterproof layer 9 is a silane modified polyurethane coating, and the thickness of the waterproof layer 9 is 15 micrometers.

As shown in fig. 1, the protective film main body includes a PE base layer 1, an aramid layer 3, an adhesive layer 4, a heat insulating layer 5, and an anti-curling layer 6. The PE base layer 1 is a PE/PP composite film which is prepared by mixing 40 parts by weight of low-density polyethylene, 40 parts by weight of linear low-density polyethylene, 8 parts by weight of polypropylene and 8 parts by weight of low-pressure polyethylene. One deck aramid fiber layer 3 is laid to 1 upper surface of PE basic unit, and aramid fiber layer 3 links to each other with insulating layer 5 through adhesive layer 4, and 1 lower surface of PE basic unit links to each other with self-adhesive layer 2, is provided with anti-curl layer 6 above the insulating layer 5. The aramid fiber layer 3 is formed by laying reticular aramid fiber yarns, and the thickness of the aramid fiber layer 3 is 4 micrometers. The composite silicate coating is arranged as a heat insulation layer 5, and the thickness of the heat insulation layer 5 is 10 mu m. The anti-curl layer 6 made of cellulose acetate phthalate was used, and the thickness was set to 40 μm.

Example 3

As shown in fig. 1, the anti-curling protective film according to embodiment 2 of the present invention includes a protective film main body, an EVA pressure sensitive adhesive layer 7, an ultraviolet absorbing layer 8, and a waterproof layer 9, and the protective film main body is connected to a base material through a self-adhesive layer 2. The upper surface of the protective film main body is provided with an EVA pressure-sensitive adhesive layer 7, and an ultraviolet absorption layer 8 is arranged between the EVA pressure-sensitive adhesive layer 7 and the waterproof layer 9. The waterproof layer 9 is a silane modified polyurethane coating, and the thickness of the waterproof layer 9 is 12 microns.

As shown in fig. 1, the protective film main body includes a PE base layer 1, an aramid layer 3, an adhesive layer 4, a heat insulating layer 5, and an anti-curling layer 6. The PE base layer 1 is a PE/PP composite film which is prepared by mixing 40 parts by weight of low-density polyethylene, 40 parts by weight of linear low-density polyethylene, 8 parts by weight of polypropylene and 8 parts by weight of low-pressure polyethylene. One deck aramid fiber layer 3 is laid to 1 upper surface of PE basic unit, and aramid fiber layer 3 links to each other with insulating layer 5 through adhesive layer 4, and 1 lower surface of PE basic unit links to each other with self-adhesive layer 2, is provided with anti-curling layer 6 above the insulating layer 5. The aramid fiber layer 3 is formed by laying reticular aramid fiber yarns, and the thickness of the aramid fiber layer 3 is 3 mu m. The composite silicate coating is set as a heat insulation layer 5, and the thickness of the heat insulation layer 5 is 8 microns. The anti-curl layer 6 made of cellulose acetate phthalate was used, and the thickness was set to 30 μm.

It should be noted that the adhesive layer in the present invention may be formed by coating polyurethane adhesive, epoxy resin adhesive, polyvinyl acetal adhesive, rubber adhesive, etc., or an adhesive layer may not be disposed between the PE base layer 1 and the thermal insulation layer 5, and the composite silicate coating has excellent heat insulation and adhesion properties, and can be directly adhered to the PE base layer 1. The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims

1. The anti-curling protective film is characterized by comprising a protective film main body, an EVA (ethylene vinyl acetate) pressure-sensitive adhesive layer (7), an ultraviolet absorption layer (8) and a waterproof layer (9), wherein the protective film main body is connected with a base material through a self-adhesive layer (2);

the protective film main body comprises a PE base layer (1), an aramid fiber layer (3), an adhesive layer (4), a heat-insulating layer (5) and an anti-curling layer (6), wherein the aramid fiber layer (3) is laid on the upper surface of the PE base layer (1), the aramid fiber layer (3) is connected with the heat-insulating layer (5) through the adhesive layer (4), the lower surface of the PE base layer (1) is connected with the self-adhesive layer (2), and the anti-curling layer (6) is arranged on the heat-insulating layer (5);

prevent that curl layer (6) upper surface is provided with EVA pressure sensitive adhesive layer (7), EVA pressure sensitive adhesive layer (7) with be provided with between waterproof layer (9) ultraviolet absorption layer (8).

2. Anti-curl protective film according to claim 1, characterized in that the aramid layer (3) is laid with a mesh-like aramid yarn, the thickness of the aramid layer (3) being 2-4 μm.

3. The anti-curl protective film according to claim 1, wherein the anti-curl layer (6) is a cellulose acetate phthalate film, and the thickness of the anti-curl layer (6) is 20 to 40 μm.

4. The anti-curl protective film according to claim 1, wherein the thermal insulation layer (5) is a composite silicate thermal insulation coating, and the thickness of the thermal insulation layer (5) is 5-10 μm.

5. The anti-curl protective film according to claim 1, wherein the water-repellent layer (9) is a silane-modified polyurethane coating layer, and the thickness of the water-repellent layer (9) is 10 to 15 μm.