POLYMER COMPOSITION AND EASILY UNSEALABLE SEALING MATERIAL PREPARED THEREFROM

摘要

PROBLEM TO BE SOLVED: To provide a sealing material which can be easily unsealed when used for sealing polyethylene, esp. polyethylene-coated paper. SOLUTION: This sealing material is prepd. by using a polymer compsn. comprising (A) 30-90 wt.% ethylene-unsatd. carboxylic acid copolymer having an unsatd. carboxylic acid content of 4-20 wt.% or its ionomer, (B) 5-45 wt.% polymer formed mainly from propylene or 1-butene, and (C) 5-25 wt.% tackifying resin.