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Optical transparent pressure-sensitive adhesive material, optical transparent pressure-sensitive adhesive laminate, and process for producing same

一种粘合体、层叠体的技术，应用在化学仪器和方法、光学、非线性光学等方向，能够解决难以实现剥离选择性、剥离强度变大等问题，达到优异选择剥离性、降低气泡产生和剥离、量产性提高的效果

Inactive Publication Date: 2015-04-08
TAICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, it is known that if the optical transparent adhesive material has high adhesiveness exceeding No. 15 in the rolling ball adhesion test, the peeling force (peeling strength) with the release film will also increase accordingly. Fluorine-based, alkyd-based, and even silicone-based release films with remarkably excellent light release properties are also difficult to achieve good release selectivity

Method used

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  • Optical transparent pressure-sensitive adhesive material, optical transparent pressure-sensitive adhesive laminate, and process for producing same
  • Optical transparent pressure-sensitive adhesive material, optical transparent pressure-sensitive adhesive laminate, and process for producing same
  • Optical transparent pressure-sensitive adhesive material, optical transparent pressure-sensitive adhesive laminate, and process for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0169] Through (i) a molding process of sandwiching the uncured liquid silicone gel raw material with a release film (A) and a release film (B), and setting the thickness; (ii) a heating process of heating and curing after molding; and (iii) A cooling step of cooling the solidified sheet to obtain a transparent adhesive laminate for optics of 200 mm x 200 mm x thickness 2.0 mm, in which the release film (A), the optical transparent adhesive, and the release film (B) were sequentially laminated.

[0170] As the uncured liquid silicone gel raw material, a two-component addition reaction silicone gel manufactured by Wacker Asahikasei Silicone Co., Ltd. (model: SLJ3363, total light transmittance in air of 90%) was used. A silicone gel obtained by blending liquid A (main ingredient + crosslinking catalyst) / liquid B (main ingredient + crosslinking agent) at 55 parts by weight / 45 parts by weight.

[0171] The release film (A) uses the following material: it is a structure in which a ...

Embodiment 2

[0176] For the raw material of the uncured liquid silicone gel, a two-component addition reaction silicone gel manufactured by Wacker Asahikasei Silicone Co., Ltd. (model: SLJ3363, the total light transmittance in air is 90%) According to A liquid (main agent + crosslinking catalyst) / B liquid (main agent + crosslinking agent) is 52 parts by weight / 48 parts by weight for use, the respective A sheet-shaped transparent adhesive laminate for optics was obtained in the same manner as in Example 1 except that the addition amount of ethylene bisoleic acid amide was 3% by weight and 2% by weight.

Embodiment 3

[0178] After (i) supplying the uncured liquid viscoelastic material on the peeling film (B), and setting the molding process of thickness; (ii) opening the heating step of heating and curing without sticking the peeling film (A) after molding; (iii) a cooling step of cooling the solidified sheet obtained in the above heating and curing step; and (iv) a peeling film sticking step of sticking a release film (A) on the surface heated and cured in the above heating step to obtain sequentially laminated sheets. A transparent adhesive laminate for optics having a release film (A), a transparent adhesive for optics, and a release film (B), 200 mm x 200 mm x thickness 2.0 mm.

[0179] In addition, the thickness setting of the forming step of (i) is carried out as follows: the peeling action surface of the release film (B) is laid on a flat glass substrate, and further, the aluminum plate is placed on the release film (B). A frame-shaped spacer with an internal size of 200mm×200mm×thic...

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Abstract

A highly pressure-sensitive adhesive optical transparent pressure-sensitive adhesive body or optical transparent pressure-sensitive adhesive laminate which stably provide peeling site selectivity between both sides of the transparent pressure-sensitive adhesive body and a release sheet in the case of pasting, whereas stably and easily express peeling site selectivity between both sides of the transparent pressure-sensitive adhesive body in the case of rework, that is, re-pasting, as well as superior adhesion stability after pasting, and a method for producing the same. An optical transparent pressure-sensitive adhesive body and the like having pressure-sensitive adhesive surface (a) and pressure-sensitive adhesive surface (b) having different pressure-sensitive adhesive property from each other, and being formed with an addition reaction type silicone gel, characterized in that pressure-sensitive adhesive performance (Ga) of pressure-sensitive adhesive surface (a) and pressure-sensitive adhesive performance (Gb) of pressure-sensitive adhesive surface (b) satisfy a relationship of Ga < Gb, and pressure-sensitive adhesive performance (Ga) and pressure-sensitive adhesive performance (Gb) have 5 to 32 in ball number and 2 to 12 in ball number difference in the tilt type ball tack test (tilt angle: 30 degrees) according to JIS Z0237; and that pressure-sensitive adhesive surface (a) and pressure-sensitive adhesive surface (b) are formed by tightly adhering an uncured raw material of said addition reaction type silicone gel to different release film (A) and release film (B) and thermal-curing them, and the release film (A) and the release film (B) have a release treatment layer comprising a fatty acid amide type additive.

Description

technical field [0001] The present invention relates to a transparent adhesive for optics, a transparent adhesive laminate for optics, and a method for producing the same. Specifically, it relates to the ability to stably obtain both sides of the transparent adhesive when affixed to an optical member. It is selective to the peeling part of the release sheet, and can realize transparent adhesion stably and easily when reprocessing such as re-attaching after removing the transparent adhesive body from the optical part and reusing (recycling) the optical part Disclosed is a highly adhesive transparent adhesive body for optics with selective peeling sites on both sides of the body, a transparent adhesive laminate for optics, and a production method thereof. Background technique [0002] In general, in order to improve operability and mass productivity (automation) when assembling optical components by sticking transparent pressure-sensitive adhesive sheets, it is important to st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/00G02F1/1335C09J183/04C09J7/10
CPCC09D183/04C09J2203/318Y10T428/2839C09J7/00C09J183/06C09J2201/134Y10T156/10C09J2483/00C09J7/10C09J2301/1242C09J7/29C09J7/40C09J7/38B32B37/12G02F1/1335
Inventor 增田政彦
Owner TAICA
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