Extrusion & Post
6 조회수
PETG UV-curable coating insufficient adhesion
문제 현상
After UV coating curing, the adhesion test is unqualified and the coating peels off.
원인 분석
PETG has low surface energy and poor coating wetting, the surface has contamination or an oxide layer, and the UV formulation is improper.
해결 방법
Surface corona or plasma pretreatment; optimize the UV formulation by adding adhesion promoters; increase UV curing energy.
핵심 요약
PETG UV coating adhesion depends on surface treatment and formulation optimization.
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