Extrusion & Post
11 조회수
PET bottles too soft with insufficient strength
문제 현상
The finished bottles feel soft to the touch, deform easily when pressed, have low top-load values, bulge and deform after filling, and pose a high stacking risk.
원인 분석
The main causes are unreasonable bottle design and excessively high processing temperature resulting in insufficient stretch orientation; when the orientation degree is low, the PET molecular chains are not fully strengthened, and the rigidity of the bottle body naturally decreases.
해결 방법
①Improve the bottle shape and wall thickness design; ②perform preform injection and bottle '2079851475616104457 at as low a temperature as possible; ③optimize the stretch ratio to increase the orientation degree; ④measure the wall thickness of each part of the bottle body.; after adjustment, take consecutive samples to verify the effect, and resume mass production only after confirming stability
핵심 요약
A bottle being too soft requires distinguishing a design problem from a process problem; low-temperature molding to increase orientation is an effective means of improving rigidity, but the whitening risk must be taken into account for comprehensive balance.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!