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Silicone release film with improved release performance and anti-adhesion performance

A technology of silicone and peeling film, which is applied in the direction of film/flaky adhesives, adhesives, chemical instruments and methods, etc. It can solve the problems of increased haze, separation of inactive particles, difficult film, low peeling force, etc.

Inactive Publication Date: 2013-08-14
SKC HAAS DISPLAY FILMS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thin films are difficult to achieve the low peel force required for optical applications
Furthermore, issues such as its increased haze and separation of inactive particles remain unresolved

Method used

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  • Silicone release film with improved release performance and anti-adhesion performance
  • Silicone release film with improved release performance and anti-adhesion performance
  • Silicone release film with improved release performance and anti-adhesion performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] By mixing 5% by weight of polydimethylsiloxane with hexenyl groups (LTC750A, Dow Corning), 0.2% by weight of hydrogen siloxane, 350 ppm of platinum catalyst, 0.02% by weight of organic inactive particles with an average diameter of 5 μm (cross-linked silicone particles) and the balance of toluene and methyl ethyl ketone (MEK) mixed solvent to prepare a solvent-based mixture.

[0058] The composition was applied to a 50 μm thick PET film using conventional coating methods with a coating thickness of 1 μm measured after its drying. The film was heat-treated at 150° C. for 30 seconds to obtain a silicone release film.

Embodiment 2

[0060] The operation of Example 1 was repeated except that polydimethylsiloxane (SD7226, Dow Corning) having a vinyl group was used.

Embodiment 3

[0062] The operation of Example 1 was repeated, except that the coating thickness was changed to 0.5 μm, and the average diameter of the organic inactive particles was changed to 2 μm.

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PUM

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Abstract

The present invention relates to a silicone release film which protects a binding layer in a preparing process of an optical binding film, and a method for preparing the release film. The optical binding film is used for display devices such as touch screen panel (TSP), LCD and PDP. Particularly, the invention provides a method for preparing the release film, wherein compared with the traditional film, the release film has the following advantages: high release performance (easy release), high rebinding performance, stable release keeping performance in storage, improved anti-adhesion performance, excellent machining performance, andn slightly increased haze caused by forming a coarse surface on a coating layer. The release film prepared according to the method is particularly useful for an optical bound film.

Description

technical field [0001] The present invention relates to a silicone release film for protecting an adhesive layer of an optical adhesive film used for display devices such as touch screen panels (TSP), LCDs, and PDPs during the preparation of optical adhesive films . Background technique [0002] Silicone films have been widely used industrially as base films for adhesive or pressure sensitive adhesive products or cast products. Especially due to the current growth of the display product industry, there is an increasing demand for silicone films used as base films in various adhesive films. [0003] In general, optical adhesive films for display devices (such as TSP, LCD, PDP, etc.) are usually used without the presence of a base film. Therefore, a silicone release film is used to protect the adhesive layer of the optical adhesive film, wherein each side of the optical adhesive film is protected by two different types of silicone release films with different release forces ...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08L83/04C09J7/02
CPCB32B7/02B32B27/08B32B27/18B32B27/283B32B27/36B32B2307/40
Inventor 郑光洙冰广殷崔荣洙玉炳胄郑铉正
Owner SKC HAAS DISPLAY FILMS CO LTD
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