有瓶坯专用的注塑机采用长型的四柱空间迎合瓶坯模具的需要。
There are even injection moulding machines dedicated to making preforms having a rectangular tiebar clearance to fit the needs of making preforms.
本文介绍了利用国产注塑机配备一出四模具生产PET瓶坯的生产工艺，模具冷却温度及注射温度、压力的选择。
The paper introduces one to four moulds production of PET bottle blanks using domestic plastic injector. Selections of cooling temperature of mould and injector temperature and pressure are included.
分析了PET瓶坯的成型工艺，包括PET树脂的干燥、模具工作部分的温度控制等，阐述了热流道注塑模的结构及工作原理。
The forming technology was analyzed, including drying of PET resin and the temperature control of mold work section. The construction of a hot runner mold and its mechanism were described.
为解决PET塑料加工温度范围较窄，工艺性较差的问题，提出了PET吹塑瓶坯热流道模具设计方法。
A design method of hot runner mold for PET bottle base was proposed to extend the temperature range of PET resin for better processing.
为解决PET塑料加工温度范围较窄，工艺性较差的问题，提出了PET吹塑瓶坯热流道模具设计方法。
A design method of hot runner mold for PET bottle base was proposed to extend the temperature range of PET resin for better processing.
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