Welcome to TAIZHOU YANJUN MOULD CO., LTD!
新闻中心
The quality of the preform depends on the quality of the supplied preform. There are two types of preforms for injection molding: one is a long gate and the other is a short gate. The domestic manufacturers of preforms use more short-shot preforms, while overseas use more long-term gates. Long plastic mouth preforms are cut out due to the gate at the bottom, so that the tension is evenly distributed during the blowing process, so that the quality of the blown bottles will be better, and the cut away part can be recycled.
This is conducive to saving raw material costs. In today's increasingly scarce oil resources, domestic manufacturers will be more inclined to long gate preforms. The control of preform quality during production depends on the extent to which preforms are prevented from being scratched during transport.

The last article:no
The next article:Bottle defects and solutions?