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Stripping film, polarizing film with stripping film and two-sided bonding sheet without base material

A peeling sheet and base material technology, which is applied in the direction of polarizing elements, instruments, synthetic resin layered products, etc., can solve the problems that the peeling agent layer cannot be fully hardened and the peeling performance of the peeling agent layer is reduced, and achieve good peeling performance and hardening performance. good effect

Active Publication Date: 2009-09-23
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, in order to suppress the change in the orientation angle of the release sheet base material, if the heating temperature during curing is lowered, the release agent layer cannot be fully cured, and the peeling performance of the release agent layer will decrease.

Method used

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  • Stripping film, polarizing film with stripping film and two-sided bonding sheet without base material

Examples

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Effect test

Embodiment 1

[0050] (manufacturing peel-off sheet)

[0051] A silicone resin solution containing 30 parts by weight of an organopolysiloxane having an alkenyl group and an organopolysiloxane having a hydrosilyl group (manufactured by Toray Dow Corning Silicone Co., Ltd., trade name " LTC-750A") and MQ resin (manufactured by Toray Dou Corning Silicone Co., Ltd., trade name "SD7292") having a vinyl group in terms of solid content of 30 parts by weight were diluted and mixed in toluene solvent, so that the solid content The concentration is 2.0% by weight. 3 parts by weight of a platinum-based catalyst (manufactured by Toray Dow Corning Silicone Co., Ltd., trade name "SRX-212") was added to this solution to obtain an addition reaction type silicone resin composition. This solution was coated on a transversely and longitudinally biaxially stretched polyethylene terephthalate film (manufactured by Toray Co., Ltd., trade name "Lumiror R64") with a thickness of 38 μm using a Mayer rod, and the f...

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Abstract

The present invention relates to a stripping film, a polarizing film with the stripping film and a two-sided bonding sheet without base material. the present invention provides the stripping film capable of implementing a high precision examination through a cross Nickle method and having a good peeling performance. the stripping film of the invention is formed by setting a stripping layer on a stripping film base material. The stripping film base material is a polyester film extending bidirectionally or unidirectionally. A stripper layer hardens an organopolysiloxane having alkenyl with 6-10 of carbon atoms in a molecule and a addition reaction type silicon resin composition of a MQ resin with alkenyl in a molecule, and covers by a film. In a sample sampled by the stripping film, a distribution range of an inclination angle (orientation angle) of an orientation main shaft of the stripping film base material is less than 5 DEG relative to an straight line shaft of a random direction.

Description

technical field [0001] The invention relates to a peeling sheet, a polarizing sheet with a peeling sheet and a substrate-free double-sided adhesive sheet. Background technique [0002] In recent years, LCD technology has advanced significantly, and the size of the screen has continued to increase. At the same time, the luminance of the backlight has been improved, and so-called high-brightness LCDs have gradually become popular. In this kind of LCD, even if foreign objects or defects (so-called defects) in the components of the LCD such as polarizers are small, since visible bright spots appear in the display, it becomes important to improve the accuracy of defect inspection . [0003] For example, to check the defects in the polarizer, the visual inspection is generally carried out by the cross-Nikkor method. The cross-Nikkor method is to overlap the two polarizers in the direction perpendicular to the orientation axis in the extinction state. If there is a defect, it will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B7/06G02B5/30
CPCB32B7/06B32B27/36B32B2307/42G02F1/1335
Inventor 稻男洋一西田卓生
Owner LINTEC CORP
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