Extrusion & Post
13 مشاهدة
PET Bottle Bottom Material Accumulation (Thick Bottom)
ظاهرة المشكلة
The material thickness at the center of the bottle bottom is too large, the cost is high and the bottom is whitened.
تحليل الأسباب
Excessive bottom heating or the stretch rod did not pull the material into place; improper bottom mold temperature.
الحل
①Reduce the bottom lamp zone power; ②optimize the stretch rod stroke and speed; ③check bottom mold cooling; ④adjust pre-blow.
الخلاصة الأساسية
Thick bottom = too much heat at the bottom, the rod not in place.
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