本文论述了用机械发泡法制备聚乙烯醇缩甲醛泡沫塑料的工艺及其影响因素。
The preparation technology and its effect factors for polyvinyl formal foam plastic by way of mechanical foaming method were studied.
设计开发了一种用包装胶带将缓冲发泡塑料与塑料中空板或瓦楞纸板粘合在一起的自动化机械。
An automatic machine which pastes the EPS and plastic hollow plate or corrugated board together was designed and developed to realize automation of tape pasting for various sizes of cushioning pad.
本文用水作发泡剂，通过变化用水量，研究软质聚氨酯泡沫塑料的密度与物理机械性能之间的关系。
This Paper studies the relationship between density of flexible polyurethane foam and it's physical-mechanical properties Under the condition of different amount of water as blowing agents.
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