Injection Molding
6 조회수
PET Preform Injection Short Shot
문제 현상
Material shortage at the end of the preform (neck side).
원인 분석
Insufficient injection pressure/speed, poor venting; PET melt viscosity is relatively high, and thin-wall long-flow preforms are prone to short shots.
해결 방법
①Increase pressure and speed; ②venting; ③check melt temperature; ④check hot runner temperature.
핵심 요약
Preform short shot = pressure and venting.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!