ADHESIVE SHEET WITH RELEASE LINER, AND METHOD OF PRODUCING ADHESIVE SHEET WITH RELEASE LINER

To provide an adhesive sheet with a release liner suitable for releasing a light release liner while suppressing release of a heavy release liner, and a method of producing an adhesive sheet with a release liner.SOLUTION: An adhesive sheet S with a release liner includes an adhesive sheet 10 and rel...

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Bibliographic Details
Main Authors ITO MIKINAO, MITSUI KAZUMA, SAWAZAKI RYOHEI
Format Patent
LanguageEnglish
Japanese
Published 08.04.2024
Subjects
ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE
ADHESIVES
CHEMISTRY
DYES
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL
PAINTS
PERFORMING OPERATIONS
POLISHES
TRANSPORTING
USE OF MATERIALS AS ADHESIVES
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Summary:To provide an adhesive sheet with a release liner suitable for releasing a light release liner while suppressing release of a heavy release liner, and a method of producing an adhesive sheet with a release liner.SOLUTION: An adhesive sheet S with a release liner includes an adhesive sheet 10 and release liners 20 and 30. The release liner 20 is a heavy release liner that contacts a first surface 11 of the adhesive sheet 10. The release liner 30 is a light release liner that contacts a second surface 12 of the adhesive sheet 10. The maximum stress X of the release liner 20 with respect to the adhesive sheet 10 in a predetermined shear tensile test is 24 N or more. In the producing method of the present invention, the composition layer is photocured by UV irradiation from the release liner 20 side to the laminated film (release liner 20/layer of photopolymerizable adhesive composition containing an ultraviolet absorber/release liner 30) to form the adhesive sheet 10. The release liner 20 has a vinyl group on the surface on a composition layer side.SELECTED DRAWING: Figure 1 【課題】重はく離ライナーの剥離を抑制しつつ軽はく離ライナーを剥離するのに適したはく離ライナー付き粘着シート、および、はく離ライナー付き粘着シートの製造方法を提供する。【解決手段】はく離ライナー付き粘着シートＳは、粘着シート１０とはく離ライナー２０,３０を備える。はく離ライナー２０は、粘着シート１０の第１面１１に接する重はく離ライナーである。はく離ライナー３０は、粘着シート１０の第２面１２に接する軽はく離ライナーである。粘着シート１０に対するはく離ライナー２０の、所定せん断引張試験での最大応力Ｘは、２４Ｎ以上である。本発明の製造方法では、積層フィルム(はく離ライナー２０／紫外線吸収剤含有の光重合性粘着剤組成物の層／はく離ライナー３０)に対するはく離ライナー２０側からの紫外線照射により組成物層を光硬化させて粘着シート１０を形成する。はく離ライナー２０は、組成物層側の表面にビニル基を有する。【選択図】図１
Bibliography:Application Number: JP20230036146