CROSSLINKED POLYPROPYLENE RESIN FOAM HAVING EXCELLENT HEAT-RESISTANCE AND FORMABILITY

摘要

PURPOSE:To provide a foam containing a specific polyethylene copolymer and a polypropylene, having excellent vacuum-formability and heat-resistance and formable by vacuum-forming without causing the bubble breakage and surface- roughening. CONSTITUTION:The objective foamed material is composed of a blended polymer containing (A) a polyethylene copolymer containing one or more compounds selected from monobasic or dibasic aliphatic unsaturated carboxylic acid and its derivative as a copolymerized component and (B) a polypropylene as essential components. The blending ratio of B/A is 2-19 (by weight), the gal fraction is 15-45% and the draw ratio (K) is >=0.6. The resin composition may be blended further with <=80pts.wt. of polyethylene based on 100pts.wt. of A+B.