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Protection film substrate special for information technology (IT) product

A technology for protective films and substrates, applied in the field of special protective film substrates for IT products, can solve problems such as poor impact resistance, poor heat resistance, and poor film flatness, and achieve good heat resistance and tensile strength. and excellent impact resistance

Active Publication Date: 2014-04-09
安徽双津实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biaxially oriented polyester film has high hardness, high static electricity, poor impact resistance, and is easy to cause damage to the optical sheet; the impact resistance of the biaxially oriented polypropylene film is poor; the stiffness of the polyethylene film is not enough, the heat resistance is poor and the film Many crystal points
At present, there are some protective film production technologies in China, such as the surface protective film for optical film mentioned in the patent application number 03147185.4, whose basic material is polylactic acid film; the protective film mentioned in the patent application number 200680010909.9 The main component of the substrate contains (meth)acrylic resin, which is produced by biaxial stretching process; the closest to the present invention is the surface protection film provided by the application number 200780035349.7, but it is laminated on one side of the substrate layer with For the protective film of the adhesive layer, the arithmetic average surface roughness of the adhesive layer of the substrate layer is less than 0.65 microns, and the arithmetic average surface roughness of the other side of the substrate layer is more than 0.6 microns, and the flatness of the film is not good
In addition, most of the protective film substrates sold in the market are imported from Japan, South Korea, etc., and the price is relatively high.

Method used

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  • Protection film substrate special for information technology (IT) product
  • Protection film substrate special for information technology (IT) product
  • Protection film substrate special for information technology (IT) product

Examples

Experimental program
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Embodiment 1

[0017] Example 1: Special protective film substrate for IT products, including outer surface layer 1, middle layer 2, inner surface layer 3. The thickness ratios of the three layers are 5%-60% of the outer surface layer and 10%-80% of the middle layer. %, the inner surface layer is 5%-60%.

[0018] In the special protective film substrate for IT products, the main material of the outer surface layer is block copolymer polypropylene or homopolymer polypropylene or a blend of the two, and the main material of the intermediate layer is homopolymer polypropylene or block copolymer polypropylene. Polypropylene or a blend of both; the main material of the inner surface layer is block copolymer polypropylene or homopolymer polypropylene or a blend of both.

[0019] In the special protective film substrate for IT products, the thickness of the protective film substrate is in the range of 20-150 microns, preferably in the range of 30-90 microns.

Embodiment 2

[0020] Example 2: Considering film performance and cost comprehensively, the best ratio of the present invention is:

[0021] Outer surface layer: 100% interlocking copolymer polypropylene, accounting for 20% of the layer thickness,

[0022] Middle layer: 100% homopolymer polypropylene, accounting for 60% of the layer thickness

[0023] Inner surface layer: 100% block copolymer polypropylene, accounting for 20% of the layer thickness.

[0024] According to actual requirements, the raw material ratio and layer thickness ratio of the outer surface layer, middle layer, and inner surface layer can be adjusted.

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Abstract

The invention discloses a protection film substrate special for an information technology (IT) product. The protection film substrate mainly comprises an outer surface layer, a middle layer and an inner surface layer in a certain ratio. The film crystal point of the protection film substrate is well controlled, and the crystal point size is less than 150 microns and completely meets the grade requirement of an optical film; and the protection film substrate has high heat resistance, tensile strength, impact resistance and surface evenness, and the surface roughness of the two sides of the protection film substrate is less than 0.25 micron.

Description

Technical field [0001] The invention belongs to a special protective film substrate for IT products related to the field of optical film products, and is suitable for surfaces such as prism films, diffusers, brightness enhancement films, polarizers, light guide plates, mobile phones, computer display screens, and various photosensitive dry films. It can also be used for surface protection of various steel plates, architectural glass and plates. Background technique [0002] In the production process of IT products, especially liquid crystal displays, are composed of a variety of optical sheets, including prism sheets, diffusers, light-enhancing sheets, polarizers, light guide plates, etc. In the production process of combining these optical sheets into a liquid crystal display, if the surface is damaged, dirt appears, and dust is adsorbed, it will affect the quality of the entire liquid crystal display. Therefore, a protective film needs to be attached to the surface of the optic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/32
Inventor 唐新国唐健王帮新张治国耿伟
Owner 安徽双津实业有限公司
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