改性聚丙烯吸塑薄片的生产技术

Processing technique of HDPE-converted PP sheet for vacuum forming

聚丙烯薄片具有卫生性能好,比重小,能在较高温度下使用,并具有较高的机械性能和化学稳定性。用它吸塑成型的容器,将是理想的食品包装材料,属国家重点发展的食品吸塑包装材料更新换代产品。但是,由于聚丙烯是结晶性聚合物,在结晶熔化前,几乎没有高弹态区域。在结晶熔化前,薄片强度很大,很难吸塑拉伸;在结晶熔化后,薄片的熔体强度又骤然下降。一吸就破。因此。

Zhejiang packaging Material Factory has successfully developed PP sheet for vacuum forming by blending HDPE with PP.This artice illustrates the process,raw material formulalion,key technique as well as a special prouction case of the HDPE-converted PP sheet for vacuon forming.