Color-changing paint surface protective film of TPU (Thermoplastic Polyurethane) base material

Abstract

The utility model discloses a color-changing paint surface protective film of a TPU (Thermoplastic Polyurethane) base material, which comprises an air contact film, an adhesion inner film is arranged below the air contact film, a protective lining film is arranged between the air contact film and the adhesion inner film, and the protective lining film, the air contact film and the adhesion inner film are adhered and fixed by adopting an adhesive. The protective lining film comprises two bonding films which are attached to each other, and a plurality of positioning holes are formed in the surfaces of the two bonding films in a penetrating mode. According to the utility model, the protective lining film is additionally arranged between the air contact film and the attached inner film, and the overall elastic strength and the structural strength of the color-changing paint surface protective film are enhanced by utilizing the buffer blocks which are arranged between the positioning holes and the two buffer covering protective shells which correspond to each other in position; and meanwhile, the buffering covering protection shell and the buffering blocks form a honeycomb structure, so that the tensile property of the color-changing paint surface protection film is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of paint surface protection film, specifically to a paint surface protection film of TPU base material. BACKGROUND

[0002] The paint surface protection film is a paint film that can change the color of the car body, and it can protect the car paint from minor scratches, impacts and daily UV radiation, which can cause the car paint to fade. The main materials of the paint film include PVC, PET and TPU. PVC is easy to wear, but it is cheap. PET is used for PET base paper, and it is slightly more expensive. TPU is more wear-resistant and suitable for car covers.

[0003] However, the paint surface protection film has poor elasticity and tensile resistance, and the impact of splashing stones or concrete blocks is weak, which can cause the surface of the protected object to be concave or the paint surface protection film to be damaged. Therefore, it does not meet the current needs, and we propose a paint surface protection film of TPU base material. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a paint surface protection film of TPU base material to solve the problem of poor elasticity and tensile resistance of the paint surface protection film, which can cause the surface of the protected object to be concave or the paint surface protection film to be damaged.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a paint surface protection film of TPU base material, including air contact film, the lower side of air contact film is equipped with attached inner film, the air contact film and attached inner film are equipped with protection inner lining film, the protection inner lining film and air contact film, attached inner film are adhesively fixed by using adhesive, the protection inner lining film includes two mutually adhered adhesive films, the surface of two adhesive films is equipped with a plurality of positioning holes, the inner side of positioning hole is equipped with buffer block, the upper and lower surfaces of buffer block are covered with buffer covering protection shell.

[0006] Preferably, the surface of the buffer covering protection shell towards the adhesive film is provided with a covering groove, and the buffer covering protection shell covers the part of the buffer block that exceeds the adhesive film through the covering groove.

[0007] Preferably, the thickness of the buffer block is the sum of the thickness of the two adhesive films and the depth of the two covering grooves.

[0008] Preferably, the positioning hole, the buffer block and the buffer cover protection shell are all regular hexagons, and the gap between the adjacent buffer cover protection shells is filled with glue.

[0009] Preferably, the glue forms a honeycomb glue layer between the adjacent buffer cover protection shells and bonds and fixes the air contact film and the attached inner film.

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

[0011] The utility model discloses a protection inner lining film is added between the air contact film and the attached inner film, and the buffer block between the positioning hole and the buffer cover protection shell corresponding to two positions is installed to enhance the overall elastic strength and structural strength of the repainting surface protection film, so that the repainting surface protection film is prevented from being penetrated by splashed stones and concrete fragments, and the buffer cover protection shell and the buffer block form a honeycomb structure to improve the tensile resistance of the repainting surface protection film. BRIEF DESCRIPTION OF DRAWINGS

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

[0013] Figure 2 It is Figure 1 It is the structure enlarged view of A in the middle;

[0014] Figure 3 It is the structural schematic diagram of the protection inner lining film of the utility model;

[0015] Figure 4 It is the structure explosion drawing of the protection inner lining film of the utility model.

[0016] In the drawing: 1, air contact film;2, protection inner lining film;21, bonding film;22, buffer cover protection shell;23, positioning hole;24, buffer block;25, cover groove;3, attached inner film. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments.

[0018] For example Figures 1 to 4As shown, a color-changing paint surface protection film of a TPU substrate comprises an air contact film 1, an adhesive inner film 3 arranged below the air contact film 1, and a protective inner lining film 2 arranged between the air contact film 1 and the adhesive inner film 3. The protective inner lining film 2 is fixedly connected to the air contact film 1 and the adhesive inner film 3 by an adhesive. The protective inner lining film 2 comprises two mutually adhered adhesive films 21. A plurality of positioning holes 23 are arranged on the surfaces of the two adhesive films 21. Buffer blocks 24 are arranged on the inner sides of the positioning holes 23. Buffer covering protection shells 22 are arranged on the upper and lower surfaces of the buffer blocks 24. The buffer blocks 24 and the buffer covering protection shells 22 partially protrude from the adhesive films 21 and are in contact with the air contact film 1 and the adhesive inner film 3 through the buffer covering protection shells 22. Thus, gaps are formed between the air contact film 1, the adhesive inner film 3 and the adhesive films 21, thereby improving the elasticity and impact resistance of the color-changing paint surface protection film.

[0019] The surfaces of the buffer covering protection shells 22 facing the adhesive films 21 are provided with covering grooves 25. The buffer covering protection shells 22 cover the portions of the buffer blocks 24 protruding from the adhesive films 21 through the covering grooves 25. The thickness of the buffer blocks 24 is the sum of the thicknesses of the two adhesive films 21 and the depths of the two covering grooves 25. After the buffer covering protection shells 22 completely cover the buffer blocks 24, the buffer covering protection shells 22 can remain in contact with the adhesive films 21.

[0020] The positioning holes 23, the buffer blocks 24 and the buffer covering protection shells 22 are all hexagonal in structure. The gaps between adjacent buffer covering protection shells 22 are filled with glue. The glue forms a honeycomb-shaped glue layer between the adjacent buffer covering protection shells 22 and adhesively fixes the air contact film 1 and the adhesive inner film 3. The adjacent buffer covering protection shells 22 are adhesively fixed by the glue, so that the adjacent buffer covering protection shells 22 form a honeycomb layer structure, thereby improving the tensile properties of the adhesive films 21 and ensuring the stable connection between the adhesive films 21, the buffer covering protection shells 22, the air contact film 1 and the adhesive inner film 3.

[0021] Working principle: the two adhesive films 21 are pasted and extruded after the glue is applied on the contact surface of the two adhesive films 21, so that the two adhesive films 21 are adhered and fixed, then the buffer block 24 is installed in the positioning hole 23 on the surface of the two adhesive films 21, after the installation of the buffer block 24 is completed, the end of the protruding buffer block 24 on the surface of the upper adhesive film 21 is covered by the buffer cover protection shell 22, after the end of the protruding buffer block 24 on the surface of the adhesive film 21 is covered, the two adhesive films 21 are turned over, and the protruding part of the turned over buffer block 24 is covered by the buffer cover protection shell 22, after the two ends of the buffer block 24 are covered by the buffer cover protection shell 22, the buffer cover protection shell 22 is compressed by the equipment, so that the buffer cover protection shell 22 is pasted to the adhesive film 21, then the gap between the adjacent buffer cover protection shells 22 is filled with glue, after the glue is filled, the air contact film 1 or the attached inner film 3 is covered above the glue and is compressed, so that the air contact film 1 or the attached inner film 3 is adhered and fixed with the buffer cover protection shell 22, after the fixing is completed, the color paint surface protection film is turned over, the gap between the adjacent buffer cover protection shells 22 is filled with glue, and the fixed attached inner film 3 or air contact film 1 is adhered and fixed, the protruding part of the buffer block 24 from the adhesive film 21 and the contact between the buffer cover protection shell 22 and the air contact film 1 and the attached inner film 3 make the air contact film 1 and the attached inner film 3 have a gap with the adhesive film 21, so as to improve the elasticity and impact resistance of the color paint surface protection film.

[0022] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to embrace all changes falling within the meaning and range of equivalents of the elements of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A color modification paint surface protection film for a TPU substrate, comprising an air contact film (1), characterized in that: The air contact film (1) is provided below with an attached inner film (3), and a protective inner lining film (2) is arranged between the air contact film (1) and the attached inner film (3), the protective inner lining film (2) is fixed by adhesive bonding between the air contact film (1) and the attached inner film (3), the protective inner lining film (2) comprises two mutually adhered adhesive films (21), a plurality of positioning holes (23) are arranged on the surface of the two adhesive films (21), a buffer block (24) is arranged on the inner side of the positioning hole (23), and the upper and lower surfaces of the buffer block (24) are covered with a buffer covering protection shell (22).

2. The paint refinish protection film of claim 1, wherein: The surface of the buffer covering protection shell (22) towards the adhesive film (21) is provided with a covering groove (25), and the buffer covering protection shell (22) covers the part of the buffer block (24) beyond the adhesive film (21) through the covering groove (25).

3. The paint refinish protection film of claim 2, wherein: The thickness dimension of the buffer block (24) is the sum of the thickness dimension of the two adhesive films (21) and the depth dimension of the two covering grooves (25).

4. The paint refinish protection film of claim 3, wherein: The structures of the positioning hole (23), the buffer block (24) and the buffer covering protection shell (22) are all regular hexagons, and the gap between adjacent buffer covering protection shells (22) is filled with glue.

5. The paint refinish protection film of claim 4, wherein: The glue fills the honeycomb-shaped glue layer between the adjacent buffer covering protection shells (22) and adhesively fixes the air contact film (1) and the attached inner film (3).

Images