DOUBLE-FACED PRESSURE-SENSITIVE ADHESIVE SHEET

摘要

Provided is a double-faced PSA sheet comprising a first PSA layer formed of a first PSA composition comprising an acrylic polymer PA as a base polymer and a second PSA layer formed of a second PSA composition comprising an acrylic polymer PB as a base polymer provided respectively on a first face and a second face of a substrate. The weight average molecular weights MwA and MwB of the dried THF-soluble portions of the first and the second PSA compositions satisfy the next inequalities: MwA>=80×104; MwB<80×104; (MwA-MwB)>=10×104.