An expandable poly(vinyl chloride) resin composition for use in powder molding process containing a granular poly(vinyl chloride) resin, a fine-granular poly(vinyl chloride) resin, a plasticizer, a stabilizer, a foaming agent and an alkyl phosphate gives by a powder molding process an expansion-molded article having remarkably strengthened foamed cells and free from the occurrence of surface unevenness caused by polyurethane backing.
                            一种用于粉末成型工艺的可膨胀聚
氯乙烯树脂组合物,含有粒状聚
氯乙烯树脂、细粒状聚
氯乙烯树脂、
增塑剂、稳定剂、发泡剂和烷基
磷酸酯,通过粉末成型工艺生产出的膨胀成型品具有明显强化的发泡单元,并且不会出现聚
氨酯背衬造成的表面不平整现象。