Material Drying
7 조회수
PET Preform Missing Moisture Verification
문제 현상
The process has not changed but hazy bottles appear intermittently.
원인 분석
Dryer dew point drift, molecular sieve failure or dehumidification system failure; environmental humidity changes make the drying capacity insufficient.
해결 방법
①Dew point online monitoring and alarm; ②regular regeneration/replacement of molecular sieves; ③clean the drying filter and air duct; ④strengthen verification in high-humidity seasons.
핵심 요약
Intermittent haze = drying system state drift.
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