To control the melt flowing and foaming of polymer are the key factors to ensure the quality of products during the extrusion moulding of the integral door leaf of low foamed rigid PVC.

• 在低发泡硬质聚氯乙烯整体门板的挤出成型中,控制聚合物熔体的流动和发泡是保证产品质量的关键。