Double-sided pressure-sensitive adhesive sheet with release sheets

A peeling sheet and tape peeling technology, which is applied in the direction of film/sheet adhesives, conductive adhesives, adhesives, etc., can solve problems such as high electrical insulation, liquid crystal panel defects, and electrification

Inactive Publication Date: 2012-07-18
MITSUBISHI PLASTICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, since materials made of plastic such as various optical components, adhesives, and release sheets have high electrical insulation properties, static electricity is generated when the components are rubbed against each other or when the release sheet is peeled off from the adhesive sheet, etc. can cause various problems
For example, when the surrounding dust or dust adheres to the adhesive surface of the adhesive sheet due to static electricity, defects sometimes occur on the bonding interface with the adherend, resulting in a decrease in the adhesive force over time; When a voltage is applied to the liquid crystal in an electrostatic state, there may be problems such as loss of alignment of the liquid crystal molecules or defects in the liquid crystal panel.

Method used

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  • Double-sided pressure-sensitive adhesive sheet with release sheets
  • Double-sided pressure-sensitive adhesive sheet with release sheets
  • Double-sided pressure-sensitive adhesive sheet with release sheets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] On one side of the film, a polyethylene terephthalate film (PET "75-1-K0-ASI5" manufactured by NIPPA Corporation, thickness 75 μm) 5A (Table On the other surface of the support 1) of 1, a conductive material coating ("NEOCON COAT 567" manufactured by Dainichi Seika Kogyo Co., Ltd.) was coated and dried to form a conductive layer 5B, and a release sheet 5 was produced.

[0098] For the other release sheet 7, a polyethylene terephthalate film (PET "38-1-A3" manufactured by NIPPA Corporation, thickness 38 μm) having a release layer 7B formed on one side of the film was used. 7A (: Support 2 of Table 1).

[0099] The adhesive composition is coated to a thickness of 150 μm by using an applicator, and the adhesive composition is made of 75 parts by weight of 2-ethylhexyl acrylate, 22 parts by weight of methyl acrylate, and 3 parts by weight of acrylic acid. 100 parts by weight of the copolymerized adhesive polymer (A), 1 part by weight of pentaerythritol triacrylate as a cro...

Embodiment 2

[0102] A release agent combination was applied to one surface of a polyethylene terephthalate film ("RUMIRER X53" manufactured by Toray, thickness 100 μm) 8A (: support 1 in Table 1) formed by mixing a conductive material and drying it to form a peeling layer 8B, and a peeling sheet 8 was prepared. The release agent composition was mixed with 100 parts by weight of an addition silicone (SD7320 manufactured by Dow Corning Toray Co., Ltd.) Corning Toray NC-25) 0.5 parts by weight.

[0103] Such as image 3 As shown, except that the release sheet 8 was used instead of the release sheet 7 in Example 1, a double-sided adhesive sheet with a release sheet was produced in the same manner as in Example 1 (PET mixed with a conductive material / release layer / / adhesive Mixture layer / / peeling layer / PET).

[0104] When the release sheet 8 and the release sheet 7 were peeled from the adhesive 6 at a peeling angle of 90° and a peeling speed of 300 mm / min, the peel strengths were 180 g / 50 mm ...

Embodiment 3

[0106] As the release sheet 9 on one side, a polyethylene terephthalate film (PET "75-1-K2 manufactured by NIPPA Co. - ASI 5", thickness 75 μm) (: Support 1 of Table 1).

[0107] On the other hand, the polyethylene terephthalate film ("PANACREA AS-F" manufactured by PANAC Corporation, 75 μm) having the conductive layer 10B (support 2 in Table 1) without the conductive layer was formed. A release agent composition made of silicone resin (KS-779H manufactured by Shin-Etsu Polysiloxane Co., Ltd. ) was mixed with 100 parts by weight of a curing agent (CAT-PL-50T manufactured by Shin-Etsu Silicone Co., Ltd.) 1 part by weight.

[0108] Such as Figure 4 As shown, except that the release sheet 9 and the release sheet 10 were used instead of the release sheet 5 and the release sheet 7 in Example 1, a double-sided adhesive sheet with a release sheet (PET / conductive layer / peel layer / / adhesive layer / / peel layer / PET / conductive layer).

[0109] When the release sheet 9 and the release...

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Abstract

Provided is a double-sided pressure-sensitive adhesive sheet with release sheets, which is not charged with static electricity even when wound, cut, or stacked, more specifically, a sheet which comprises a pressure-sensitive adhesive layer and two release sheets provided on both surfaces thereof, wherein the surface on the pressure-sensitive-adhesive-layer side of at least one release sheet and the surface on the non-pressure-sensitive-adhesive-layer side of at least one release sheet are configured so as to exhibit electroconductivity.

Description

technical field [0001] The present invention relates to a double-sided adhesive sheet with release sheet, which can bond two parts (adhered bodies). Laminates are formed with release sheets. Background technique [0002] In order to bond various optical components used in display devices such as liquid crystal panels, PDPs, and EL displays, double-sided adhesive sheets with release sheets are often used. It is formed by molding the agent into a sheet and laminating release sheets on the upper and lower sides of the adhesive layer. For example, in a PDP, such a double-sided PSA sheet with a release sheet can be used to laminate an antireflection film, a toner film, and an electromagnetic wave shielding film sequentially on a glass plate. [0003] In addition, recently, in order not only to bond such optical components, but also to improve visibility, for example, in liquid crystal display components, in order to fill the space layer between the polarizing plate and the uppe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00B32B7/02B32B27/00
CPCB32B7/12B32B7/06C09J7/0232C09J7/403Y10T156/10Y10T428/1476C09J7/29C09J9/02
Inventor 新美薰稻永诚
Owner MITSUBISHI PLASTICS INC
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