Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of protective film and preparation method thereof

A protective film and vinyl technology, applied in the direction of film/flaky adhesives, coatings, adhesives, etc., can solve the problem that the protective film is not easy to peel off, achieve easy-peel adhesion stability, reduce manual operation time, and achieve Effect of Adhesion Stability

Active Publication Date: 2021-05-25
NINGBO EXCITON TECH
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing protective film is not easy to peel off, the present invention provides a protective film and its preparation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of protective film and preparation method thereof
  • A kind of protective film and preparation method thereof
  • A kind of protective film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The protective film provided by the invention sequentially includes a surface layer and an adhesive layer. The surface layer is made of ethylene-propylene block copolymer and low-density polyethylene in a weight ratio of 90:10. The density of ethylene-propylene block copolymer is 0.90g / cm 3 , The melt index is 9.0g / 10min. The density of low density polyethylene is 0.922g / cm 3 , The melt index is 4.0g / 10min.

[0038] The adhesive layer adopts metallocene ethylene-octene copolymer elastomer. The copolymer elastomer has a density of 0.87g / cm 3 , The melt index is 6.0g / 10min.

[0039] The surface layer had a thickness of 34 μm, and the adhesive layer had a thickness of 6 μm.

Embodiment 2

[0041] As the protective film provided in Example 1, the difference is:

[0042] The surface layer is made of ethylene-propylene block copolymer and low-density polyethylene in a weight ratio of 75:25.

Embodiment 3

[0044] As the protective film provided in Example 1, the difference is:

[0045] The adhesive layer is made of metallocene ethylene-octene copolymer elastomer and ethylene-propylene random copolymer at a mass ratio of 90:10. Among them, the density of ethylene-propylene random copolymer is 0.88g / cm 3 , The melt index is 8.0g / 10min.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
melt flow indexaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of protective film materials, in particular to a protective film on the back of a brightness enhancement film and a preparation method thereof. In order to solve the problem that the existing protective film is not easy to peel off, the invention provides a protective film and a preparation method thereof. The protective film includes a surface layer and an adhesive layer, the surface layer includes polypropylene resin and polyethylene resin, and the adhesive layer includes metallocene polypropylene and polyolefin resin. The protective film provided by the invention is easy to peel off and has good adhesion stability, and is suitable for use as a protective film on the back of a brightness enhancing film. Moreover, the protective film provided by the invention is made by two-layer co-extrusion casting, which is convenient in process operation and low in production cost.

Description

technical field [0001] The invention relates to the field of protective film materials, in particular to a protective film on the back of a brightness enhancement film and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the electronics industry, the demand for ultra-thin displays such as liquid crystal displays has also increased. The liquid crystal display is mainly composed of a variety of optical films. To prevent optical films from being stained or scratched during handling and assembly, their surfaces need to be protected. As the protective film on the back of the brightness enhancement film, the protective film is required to have proper adhesion. Moreover, after the protective film is attached to the brightness enhancement film and rolled up and tightened, it will not be difficult to peel off. At the same time, it is required that the surface of the adherend cannot be polluted after the protective film is p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/24C08L53/00C08L23/06C09J123/08B29C41/32
CPCB29C41/32C08L53/00C08L2205/025C08L2207/066C09J123/0815C09J2203/318C09J2423/046C09J2453/006C09J7/243C09J2301/122C08L23/06C08L23/0815
Inventor 张彦陈强胡金福李刚唐海江
Owner NINGBO EXCITON TECH