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Decohesion lining and pressure-sensitive adhesive therewith

A technology of pressure-sensitive adhesives and release liners, which is applied to film/sheet adhesives, adhesives, pressure-sensitive films/sheets, etc., and can solve problems such as release liner rupture and reduced work efficiency

Inactive Publication Date: 2003-06-18
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, when the release liner is peeled from the pressure-sensitive adhesive sheet, the release liner is broken, resulting in a decrease in work efficiency

Method used

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  • Decohesion lining and pressure-sensitive adhesive therewith
  • Decohesion lining and pressure-sensitive adhesive therewith
  • Decohesion lining and pressure-sensitive adhesive therewith

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (Preparation of release liner)

[0042] Silica is fixed to a thickness of 93 μm and a basis weight of 68.0 g / m with an isocyanate adhesive 2 and the density is 0.73g / cm 3 On each side of the wood-free paper, a clay coating (3 μm) was formed. A further silicone layer (0.8 μm) was formed on each side, resulting in a release liner.

[0043] (Preparation of pressure-sensitive adhesive sheet with release liner)

[0044] The release liner was removed from the double-sided adhesive tape (No. 500, manufactured by Nitto Denko Crop.). The release liner prepared above was applied to each side of the exposed adhesive layer to prepare a pressure-sensitive adhesive sheet with a release liner.

Embodiment 2

[0046] Silica was fixed with isocyanate adhesive to a thickness of 86 μm and a basis weight of 68.7 g / m 2 and density of 0.80g / cm 3 On each side of the wood-free paper, a clay coating (3 μm) was formed. A further silicone layer (0.8 μm) was formed on each side, resulting in a release liner.

[0047] (Preparation of pressure-sensitive adhesive sheet with release liner)

[0048] The release liner was removed from the double-sided adhesive tape (No. 500, manufactured by Nitto Denko Crop.). The release liner prepared above was applied to each side of the exposed adhesive layer to prepare a pressure-sensitive adhesive sheet with a release liner.

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Abstract

A release liner which is effective in diminishing cutting blade abrasion and has satisfactory tear strength includes a base material layer and a release agent layer disposed over at least one side of the base material layer, wherein the maximum cut resistance force imposed on a cutting blade when the release liner is cut therewith is 230 N / 30 mm or lower and the release liner has a tear strength of 0.6 N or higher.

Description

technical field [0001] The present invention relates to release liners and pressure sensitive adhesives having release liners. The release liners and pressure sensitive adhesives with release liners of the present invention can be used when a cutting process such as cutting or punching is required. Background technique [0002] Pressure-sensitive adhesives are now used in a variety of ways in a variety of fields, including not only signage fixing, internal self-sealing parts, office use, a wide range of households, but also optics, electronics, and appliances. There are many cases where pressure-sensitive adhesives are processed into various sizes and shapes by cutting, punching, etc. to obtain various products depending on the application. When a large amount of pressure-sensitive adhesive needs to be added by cutting, punching, etc., the cutting blade used for cutting and punching wears out, reducing work efficiency. In particular, in adhesive tapes for fixing flexible p...

Claims

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Application Information

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IPC IPC(8): B32B7/02B32B7/06C09J7/00C09J7/02C09J201/00
CPCY10T428/14C09J7/0232B32B7/06C09J7/403C09J7/29C09J7/38
Inventor 田中良和牟田茂树赤松秀城
Owner NITTO DENKO CORP
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