CN219236411U

CN219236411U - Antistatic optical release film

Info

Publication number: CN219236411U
Application number: CN202221844358.9U
Authority: CN
Inventors: 裴建军; 陈超; 王志坚; 陈涛
Original assignee: Zhejiang Jiujiu New Material Technology Co ltd
Current assignee: Zhejiang Jiujiu New Material Technology Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2023-06-23
Anticipated expiration: 2032-07-18

Abstract

The utility model discloses an antistatic optical release film which comprises a substrate layer, an antistatic layer and a release layer which are arranged from bottom to top, wherein conductive particles are embedded in the release layer. According to the utility model, the antistatic layer and the release layer with the conductive particles are arranged, so that the dual antistatic effect is achieved, the conductive function of the conductive particles can primarily conduct and remove static electricity on the film surface, and the antistatic layer further conducts and discharges static electricity to store.

Description

Antistatic optical release film

[ field of technology ]

The utility model relates to the technical field of release films, in particular to the technical field of antistatic optical release films.

[ background Art ]

The OCA optical transparent adhesive tape is an optical double-sided adhesive tape which is formed by adhering a release film to the upper and lower surfaces of a substrate-free acrylic adhesive. OCA optical adhesives are commonly used to bond transparent optical components such as cell phone touch panels, lenses and their related components.

The existing optical transparent adhesive is easy to generate static electricity when the release film is peeled off, and can have adverse effect on the optical adhesive.

[ utility model ]

The utility model aims to solve the problems in the prior art, and provides an antistatic optical release film which can well reduce the film tearing voltage and prevent the release film from generating static electricity during film tearing and from causing adverse effects on optical adhesive.

In order to achieve the above purpose, the utility model provides an antistatic optical release film, which comprises a substrate layer, an antistatic layer and a release layer which are arranged from bottom to top, wherein conductive particles are embedded in the release layer.

Preferably, the conductive particles include two or more kinds of conductive particles having different shapes.

Preferably, the conductive particles include plate-like conductive particles, fibrous conductive particles, and spherical conductive particles.

Preferably, the sheet-shaped conductive particles are sheet-shaped conductive nickel powder; the fibrous conductive particles are fibrous conductive nickel powder; the spherical conductive particles are one or more of spherical conductive nickel powder, spherical conductive silver powder and spherical conductive copper powder.

Preferably, the conductive particles further include carbon nanotubes.

Preferably, the substrate layer is one of PET, PI, BOPP, PE, TPX.

Preferably, the thickness of the substrate layer is 25-200nm.

Preferably, the antistatic layer is formed by coating a 5% by weight aqueous polythiophene solution.

The utility model has the beneficial effects that: according to the utility model, the antistatic layer and the release layer with the conductive particles are arranged, so that the dual antistatic effect is achieved, the conductive function of the conductive particles can primarily conduct and remove static on the film surface, and the antistatic layer further conducts and discharges static voltage for accumulation; the conductive particles comprise more than two conductive particles with different forms, the flaky conductive particles and the fibrous conductive particles can form a three-dimensional conductive network, and the spherical conductive particles fill gaps, so that the conductivity of the release film is better.

The features and advantages of the present utility model will be described in detail by way of example with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic structural view of embodiment 1;

fig. 2 is a schematic structural view of embodiment 2;

FIG. 3 is a schematic structural view of embodiment 3;

fig. 4 is a partial enlarged view at a of fig. 2.

In the figure: 1-substrate layer, 2-antistatic layer, 3-release layer, 4-sheet conductive particles, 5-fibrous conductive particles, 6-spherical conductive particles, and 7-carbon nanotubes.

[ detailed description ] of the utility model

Example 1:

referring to fig. 1, the antistatic optical release film comprises a PET substrate layer 1, an antistatic layer 2 and a release layer 3 which are arranged from bottom to top, wherein conductive particles are embedded in the release layer 3, the conductive particles comprise sheet-shaped conductive particles, fibrous conductive particles and spherical conductive particles, and the sheet-shaped conductive particles are sheet-shaped conductive nickel powder; the fibrous conductive particles are fibrous conductive nickel powder; the spherical conductive particles are spherical conductive silver powder; the thickness of the substrate layer 1 is 25-200nm;

when the release film is prepared, a layer of antistatic aqueous solution is coated on the corona surface of the optical PET film in a micro-concave coating mode, the coating wet thickness is 4um, the aqueous solution is 5% of polythiophene aqueous solution by weight, and the baking is carried out for 25 seconds at 110 ℃ to obtain an antistatic film semi-finished product;

adding sheet-shaped conductive nickel powder, fibrous conductive nickel powder and spherical conductive silver powder into the release coating liquid to obtain antistatic release coating liquid;

and (3) coating a layer of antistatic release coating liquid on the antistatic surface of the antistatic film semi-finished product, adopting a micro-concave coating mode, coating the antistatic release film with the thickness of 6um, and baking at 140 ℃ for 30 seconds for curing to obtain the antistatic release film.

Example 2:

referring to fig. 1, the antistatic optical release film comprises a PET substrate layer 1, an antistatic layer 2 and a release layer 3 which are arranged from bottom to top, wherein conductive particles are embedded in the release layer 3, the conductive particles comprise sheet-shaped conductive particles, fibrous conductive particles, spherical conductive particles and carbon nanotubes, and the sheet-shaped conductive particles are sheet-shaped conductive nickel powder; the fibrous conductive particles are fibrous conductive nickel powder; the spherical conductive particles are spherical conductive silver powder; the thickness of the substrate layer 1 is 25-200nm;

the sheet-shaped conductive particles and the fibrous conductive particles can form a three-dimensional dense conductive network, and the carbon nano tubes and the spherical conductive particles fill gaps, so that the conductivity of the release film is better.

When the release film is prepared, firstly, a layer of antistatic aqueous solution is coated on the corona surface of the optical PET film in a micro-concave coating mode, the coating wet thickness is 4um, the aqueous solution is 5% of polythiophene aqueous solution by weight, and the baking is carried out for 25 seconds at 110 ℃ to obtain an antistatic film semi-finished product;

adding sheet-shaped conductive nickel powder, fibrous conductive nickel powder, spherical conductive silver powder and carbon nano tubes into the release coating liquid to obtain antistatic release coating liquid;

Example 3:

referring to fig. 1, the antistatic optical release film comprises a PET substrate layer 1, an antistatic layer 2 and a release layer 3 which are arranged from bottom to top, wherein conductive particles are embedded in the release layer 3, the conductive particles comprise sheet-shaped conductive particles and fibrous conductive particles, and the sheet-shaped conductive particles are sheet-shaped conductive nickel powder; the fibrous conductive particles are fibrous conductive nickel powder; the thickness of the substrate layer 1 was 100nm.

According to the antistatic optical release film for the optical cement, the antistatic layer and the release layer with the conductive particles are arranged, so that the antistatic optical release film has double antistatic effects, the conductive function of the conductive particles can primarily conduct and remove static electricity on the film surface, and the antistatic layer further conducts and discharges static electricity to store the static electricity, so that the influence of the static electricity on the optical cement is prevented.

The above embodiments are illustrative of the present utility model, and not limiting, and any simple modifications of the present utility model fall within the scope of the present utility model.

Claims

1. An antistatic optical release film, characterized in that: the anti-static nickel powder coating comprises a substrate layer (1), an anti-static layer (2) and a release layer (3) which are arranged from bottom to top, wherein conductive particles are embedded in the release layer (3), each conductive particle comprises a sheet-shaped conductive particle (4), a fibrous conductive particle (5) and a spherical conductive particle (6), and the sheet-shaped conductive particle (4) is sheet-shaped conductive nickel powder; the fibrous conductive particles (5) are fibrous conductive nickel powder; the spherical conductive particles (6) are one of spherical conductive nickel powder, spherical conductive silver powder and spherical conductive copper powder.

2. The antistatic optical release film of claim 1, wherein: the substrate layer (1) is one of PET, PI, BOPP, PE, TPX.

3. The antistatic optical release film of claim 1, wherein: the thickness of the substrate layer (1) is 25-200nm, and the thickness of the antistatic layer (2) is smaller than that of the release layer (3).