PRESSURE-SENSITIVE ADHESIVE SHEET

Provided is a PSA sheet having excellent shear property and improved low-temperature repulsion resistance. This invention provides a PSA sheet that has a PSA layer comprising a base polymer and a tackifier resin. The base polymer is a block copolymer of a monovinyl-substituted aromatic compound and...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OKAHARA, Kai, OOTAKE, Hironao, TAKAHASHI, Akiko
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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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Beschreibung
Zusammenfassung:	Provided is a PSA sheet having excellent shear property and improved low-temperature repulsion resistance. This invention provides a PSA sheet that has a PSA layer comprising a base polymer and a tackifier resin. The base polymer is a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound. The tackifier resin content is 10 parts to 60 parts by weight to 100 parts by weight of the base polymer. The tackifier resin comprises a tackifier resin T H having a softening point of 100 °C or higher. The tackifier resin T H content is at least 10 parts by weight to 100 parts by weight of the base polymer. The adhesive face of the PSA layer has properties such that ball tack test results in Ball No.4 or higher in an environment at 0 °C.