RESIN COMPOSITION FOR FOAMED SHEET AND FOAMED SHEET

摘要

PROBLEM TO BE SOLVED: To provide a resin composition for a foamed sheet affording the foamed sheet having excellent compression recovery properties. SOLUTION: The resin composition for the foamed sheet is characterized by comprising an aqueous emulsion (A), heat expandable hollow spheres (B) and an inorganic filler (C). The aqueous emulsion (A) comprises an ethylene-vinyl ester-based copolymer containing 5-35 pts.wt. of a structural unit (a1) derived from ethylene and 95-65 pts.wt. of a structural unit (a2) derived from a vinyl ester and has 90-160°C flow middle point and <30 wt.% content of a toluene-insoluble portion. The heat expandable hollow spheres (B) have 15-30μm average particle diameter,≤30% Cvcoefficient of variation of particle size distribution and 10-30% amount of an entrapped gas. COPYRIGHT: (C)2008,JPO&INPIT