Material Drying
4 조회수
Silver streaks caused by moisture in EEA processing
문제 현상
White silver streaks appearing on the EEA injection molded product surface
원인 분석
Raw material contains moisture >0.05% vaporizing during high-temperature processing forming bubbles stretched into silver streaks; insufficient drying or water vapor condensation in the hopper
해결 방법
1) Dry the raw material at 80°C for 3-4h to moisture <0.02%; 2) Increase back pressure 0.5-1MPa for venting; 3) Reduce injection speed to avoid air entrapment; 4) Heat the hopper to prevent water vapor condensation
핵심 요약
Silver streaks are caused by moisture vaporization and stretching; drying and venting are the main countermeasures
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!