Material Drying
7 조회수
Transparency decline and fogging of PETG injection molded products
문제 현상
The transparency of PETG products declines significantly, becoming translucent or foggy, failing to achieve the transparent packaging effect.
원인 분석
Insufficient drying with excessive moisture produces bubbles and foggy scattering during processing; processing temperature on the high side produces degradation products; mold roughness is insufficient.
해결 방법
Dry at 65-70°C for 4-6h to moisture <0.01%; control processing temperature at 220-250°C; polish the mold to a mirror finish Ra≤0.05μm.
핵심 요약
The core of PETG high transparency lies in full drying and precise temperature control.
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