To improve the volume expansion rate, lower the density of pp foam, gas escaping should be avoided by selecting the appropriate die temperature.
优选适宜的发泡机头温度可以抑制气体逃逸，提高发泡倍率，获得更低密度的聚丙烯发泡材料。
To improve the volume expansion rate, lower the density of pp foam, gas escaping should be avoided by selecting the appropriate die temperature.
优选适宜的发泡机头温度可以抑制气体逃逸，提高发泡倍率，获得更低密度的聚丙烯发泡材料。
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