Extrusion & Post
13 مشاهدة
PET Bottle Transfer Interval Too Long
ظاهرة المشكلة
The interval from heating to the blowing station is long for the preform, and pearlescent streaks appear on the bottle body.
تحليل الأسباب
The preform cools naturally after leaving the oven, the surface undergoes secondary crystallization and the internal-external temperature difference increases, forming pearlescence during stretching; the standard requires the transfer interval to be controlled within 2 seconds.
الحل
①Optimize the robot/turntable cycle to make transfer <2 seconds; ②reduce waiting after the oven; ③check equipment linkage timing.
الخلاصة الأساسية
From preform leaving the oven to blowing = a race against 2 seconds.
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