Acid-resistant antistatic high-viscosity PVC (polyvinyl chloride) protective film

Abstract

The utility model discloses an acid-resistant antistatic high-viscosity PVC (polyvinyl chloride) protective film which comprises a base material layer, a first antistatic layer and a second antistatic layer are respectively arranged on the upper surface and the lower surface of the base material layer, an adhesive layer and a release film layer are sequentially arranged on the lower surface of the second antistatic layer, and an acid-resistant layer is arranged on the upper surface of the first antistatic layer. The first anti-static layer and the second anti-static layer are arranged to provide double anti-static protection for the protective film, and the acid-resistant layer and the hydrophobic layer are arranged to protect the protective film from being corroded in the chemical etching and thinning process, so that the protective film can play a role in protecting a product when the protective film is attached to the product and the chemical etching and thinning process is carried out.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of protective film, especially to an acid and antistatic high-adhesion PVC protective film. BACKGROUND

[0002] With the rapid development of electronic product production and processing technology, people have more requirements for the thickness of electronic products, and the display panel of the electronic product becomes lighter and thinner. The display panel thinning is mainly to use chemical etching (main method) and physical grinding (auxiliary method) to thin the panel module and display glass, so as to meet the demand of light and thin display products. In the process of thinning the display panel by chemical etching, different methods such as multi-piece vertical soaking, single-piece vertical spraying and waterfall flow type chemical etching thinning process are needed. Before the chemical etching thinning process, a protective film is attached to the display panel to protect the display panel. However, in the various chemical etching thinning processes, the concentration of acid solution (hydrofluoric acid) needs to be adjusted to control the thinning speed. In this process, the protective film may be corroded because it does not have acid resistance, thereby losing the protection of the display panel. SUMMARY

[0003] The utility model aims at overcoming the deficiency in prior art, provide an acid and antistatic high-adhesion PVC protective film.

[0004] The utility model discloses a acid and antistatic high-adhesion PVC protective film, which comprises a substrate layer, a first antistatic layer and a second antistatic layer are arranged on the upper and lower surfaces of the substrate layer respectively, a glue layer and a release film layer are sequentially arranged on the lower surface of the second antistatic layer, and an acid-resistant layer is arranged on the upper surface of the first antistatic layer.

[0005] The utility model discloses a acid and antistatic high-adhesion PVC protective film, which comprises a substrate layer, a first antistatic layer and a second antistatic layer are arranged on the upper and lower surfaces of the substrate layer respectively, a glue layer and a release film layer are sequentially arranged on the lower surface of the second antistatic layer, and an acid-resistant layer is arranged on the upper surface of the first antistatic layer.

[0006] In one embodiment, the substrate layer is made of PVC material, and the thickness of the substrate layer is 20-75 microns.

[0007] In one embodiment, the first antistatic layer comprises a first base film and a first antistatic coating layer arranged on the first base film, the first base film is a polyester film, and the first antistatic coating layer is one of acrylic, silicone and polyurethane.

[0008] In one embodiment, the second antistatic layer comprises a second base film and a second antistatic coating layer arranged on the second base film, the second base film is a polyester film, and the second antistatic coating layer is one of acrylic, silicone and polyurethane.

[0009] In one embodiment, the thickness of the first antistatic layer is 2μm-10μm, and the thickness of the second antistatic layer is 2μm-10μm.

[0010] In one embodiment, the adhesive layer is an acrylic adhesive layer, and the thickness of the adhesive layer is 6μm-10μm.

[0011] In one embodiment, the release film layer is adhered to the side of the adhesive layer away from the second antistatic layer, and the release film layer is composed of a release agent coating, an antistatic agent layer and a PET substrate stacked sequentially, and the thickness of the release film layer is 25μm-55μm.

[0012] In one embodiment, the acid-resistant layer is made of fluoride or polytetrafluoroethylene, and the thickness of the acid-resistant layer is 0.06-0.15 mm.

[0013] In one embodiment, an adhesive layer for bonding and fixing is provided between the acid-resistant layer and the first antistatic layer, and the adhesive layer is a polyurethane adhesive.

[0014] In one embodiment, the upper surface of the acid-resistant layer is provided with a hydrophobic layer, the thickness of the hydrophobic layer is 10μm-20μm, and the hydrophobic layer is arranged in a mesh shape with a pore size of 2μm-6μm.

[0015] Compared with the prior art, the present invention has at least the following advantages:

[0016] This utility model discloses an acid-resistant and antistatic high-adhesion PVC protective film. By setting a first antistatic layer and a second antistatic layer, the protective film provides double antistatic protection. It also has an acid-resistant layer and a hydrophobic layer to protect the protective film from corrosion during the chemical etching and thinning process. This improves the hydrophobicity of the protective film to acidic solvents and protects the product when it is coated with the protective film for the chemical etching and thinning process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0018] Figure 1 A schematic diagram of the structure of an acid-resistant and antistatic high-adhesion PVC protective film provided by this utility model.

[0019] Figure descriptions: 10, Substrate layer; 20, First antistatic layer; 21, First base film; 22, First antistatic coating; 30, Second antistatic layer; 31, Second base film; 32, Second antistatic coating; 40, Adhesive layer; 50, Release film layer; 51, Release agent coating; 52, Antistatic agent layer; 53, PET substrate; 60, Acid-resistant layer; 70, Adhesive layer; 80, Hydrophobic layer. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0021] A highly viscous PVC protective film with acid and antistatic properties, as described above. Figure 1 It includes a substrate layer 10, with a first antistatic layer 20 and a second antistatic layer 30 respectively provided on the upper and lower surfaces of the substrate layer 10. An adhesive layer 40 and a release film layer 50 are sequentially provided on the lower surface of the second antistatic layer 30, and an acid-resistant layer 60 is provided on the upper surface of the first antistatic layer 20.

[0022] Reference Figure 1 The substrate layer 10 is made of PVC material and has a thickness of 20μm-75μm.

[0023] Furthermore, referring to Figure 1 A first antistatic layer 20 is disposed on the upper surface of the substrate layer 10. The first antistatic layer 20 includes a first base film 21 and a first antistatic coating 22 disposed on the first base film 21. The first base film 21 is a polyester film, and the first antistatic coating 22 is one of acrylic, silicone, and polyurethane. The first antistatic layer 20 has stable weather resistance and can perform antistatic functions. The first antistatic layer 20 is attached to the upper surface of the substrate layer 10, giving the substrate layer 10 antistatic properties. It should be noted that the thickness of the first antistatic layer 20 is 2μm-10μm, and the first antistatic layer 20 is fixed to the substrate layer 10 by adhesive bonding.

[0024] Reference Figure 1 The second antistatic layer 30 is disposed on the lower surface of the substrate layer 10. The second antistatic layer 30 includes a second base film 31 and a second antistatic coating 32 disposed on the second base film 31. The second base film 31 is a polyester film, and the second antistatic coating 32 is one of acrylic, silicone, and polyurethane. The second antistatic layer 30 has stable weather resistance and antistatic properties. Adhering to the lower surface of the substrate layer 10, the second antistatic layer 30 improves the antistatic properties of the substrate layer 10. It should be noted that the thickness of the second antistatic layer 30 is 2μm-10μm.

[0025] Reference Figure 1The adhesive layer 40 is located below the second antistatic layer 30. The adhesive layer 40 is an acrylic adhesive layer made of polymethyl methacrylate. The adhesive layer 40 can be firmly bonded to the second antistatic layer 30 and can be attached to the product. The thickness of the adhesive layer 40 is 6μm-10μm.

[0026] Reference Figure 1 The release film layer 50 is adhered to the side of the adhesive layer 40 away from the second antistatic layer 30. The release film layer 50 is composed of a release agent coating layer 51, an antistatic agent layer 52, and a PET substrate 53 stacked sequentially. The thickness of the release film layer 50 is 25μm-55μm. By adding an antistatic agent layer 52 within the release film layer 50, the antistatic properties of the protective film are enhanced, giving the protective film a multi-layer antistatic effect.

[0027] Furthermore, referring to Figure 1 An acid-resistant layer 60 is disposed on the upper surface of the first antistatic layer 20. The acid-resistant layer 60 is made of fluoride or polytetrafluoroethylene. Both fluoride and polytetrafluoroethylene have strong chemical stability and corrosion resistance, and can resist acid and alkali corrosion and various organic solvents, making the protective film less susceptible to corrosion during the chemical etching thinning process. The thickness of the acid-resistant layer 60 is 0.06-0.15 mm.

[0028] Furthermore, referring to Figure 1 An adhesive layer 70 for bonding and fixing is provided between the acid-resistant layer 60 and the first antistatic layer 20. The adhesive layer 70 is a polyurethane adhesive. After surface treatment, the acid-resistant layer 60 and the first antistatic layer 20 are bonded and fixed through the adhesive layer 70.

[0029] Reference Figure 1 In one embodiment, a hydrophobic layer 80 is provided on the upper surface of the acid-resistant layer 60. The hydrophobic layer 80 has a thickness of 10μm-20μm and is arranged in a mesh-like structure with pore sizes of 2μm-6μm. The high surface tension of the mesh in the hydrophobic layer 80 gives it good hydrophobicity, improving the protective film's ability to repel acidic solvents. It should be noted that the mesh shape of the hydrophobic layer 80 can be polygonal, circular, or elliptical.

[0030] This invention provides dual antistatic protection for the protective film by setting a first antistatic layer 20 and a second antistatic layer 30, and also provides an acid-resistant layer 60 and a hydrophobic layer 80 to protect the protective film from corrosion during the chemical etching and thinning process, improve the hydrophobicity of the protective film to acidic solvents, and protect the product when the protective film is applied to the product for the chemical etching and thinning process.

[0031] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A highly viscous PVC protective film with acid and antistatic properties, characterized in that, include: The substrate layer (10) has a first antistatic layer (20) and a second antistatic layer (30) on its upper and lower surfaces, respectively. The lower surface of the second antistatic layer (30) is provided with an adhesive layer (40) and a release film layer (50) in sequence, and the upper surface of the first antistatic layer (20) is provided with an acid-resistant layer (60).

2. The acid-resistant and antistatic high-adhesion PVC protective film according to claim 1, characterized in that, The substrate layer (10) is made of PVC material and the thickness of the substrate layer (10) is 20μm-75μm.

3. The acid-resistant and antistatic high-adhesion PVC protective film according to claim 1, characterized in that, The first antistatic layer (20) includes a first base film (21) and a first antistatic coating (22) disposed on the first base film (21). The first base film (21) is a polyester film, and the first antistatic coating (22) is one of acrylic, silicone and polyurethane.

4. The acid-resistant and antistatic high-adhesion PVC protective film according to claim 1, characterized in that, The second antistatic layer (30) includes a second base film (31) and a second antistatic coating (32) disposed on the second base film (31). The second base film (31) is a polyester film, and the second antistatic coating (32) is one of acrylic, silicone and polyurethane.

5. The acid-resistant and antistatic high-adhesion PVC protective film according to claim 4, characterized in that, The thickness of the first antistatic layer (20) is 2μm-10μm, and the thickness of the second antistatic layer (30) is 2μm-10μm.

6. The acid-resistant and antistatic high-adhesion PVC protective film according to claim 1, characterized in that, The adhesive layer (40) is an acrylic adhesive layer (40), and the thickness of the adhesive layer (40) is 6μm-10μm.

7. The acid-resistant and antistatic high-adhesion PVC protective film according to claim 1, characterized in that, The release film layer (50) is adhered to the side of the adhesive layer (40) away from the second antistatic layer (30). The release film layer (50) is composed of a release agent coating layer (51), an antistatic agent layer (52) and a PET substrate (53) stacked in sequence. The thickness of the release film layer (50) is 25μm-55μm.

8. The acid-resistant and antistatic high-adhesion PVC protective film according to claim 1, characterized in that, The acid-resistant layer (60) is made of fluoride or polytetrafluoroethylene, and the thickness of the acid-resistant layer (60) is 0.06-0.15 mm.

9. The acid-resistant and antistatic high-adhesion PVC protective film according to claim 8, characterized in that, An adhesive layer (70) for bonding and fixing is provided between the acid-resistant layer (60) and the first antistatic layer (20), and the adhesive layer (70) is a polyurethane adhesive.

10. The acid-resistant and antistatic high-adhesion PVC protective film according to claim 8, characterized in that, The upper surface of the acid-resistant layer (60) is provided with a hydrophobic layer (80), the thickness of the hydrophobic layer (80) is 10μm-20μm, and the hydrophobic layer (80) is mesh-like, with the mesh pore size of the hydrophobic layer (80) being 2μm-6μm.

Images