本文介绍了热收缩套管的收缩机理及成型方法，如气压吹胀法、机械扩张法和缠绕法等。
This article introduces the shrinking mechanism and molding process of heat-shrinkable tubes, Such as air inflation, mechanical expanding and winding etc.
吹塑成型是成型中空塑料制品的主要成型方法，其成型过程包括型坯成型、型坯吹胀和制品的冷却固化三个阶段。
Blow molding is the main molding method for the hollow plastic products, including three steps such as parison formation, parison inflation and cooling solidification in its molding process.
中空制品的吹型成型质量受各种工艺因素的影响，包括熔融温度、吹胀压力、拉仲速率、冷却时间、聚合物材料柱能等。
The quality of the hollow blow molding plastic products is affected by various process factors, such as melt temperature, inflation pressure, stretching rate, cooling time and polymer property, etc.
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