Extrusion & Post
4 görüntüleme
Uneven coating on PET film
Sorun Belirtisi
Streaks, uneven thickness or pinholes appear when coating functional coatings on PET film.
Neden Analizi
Film surface tension is uneven (locally insufficient dyne value); the coating liquid wets the film poorly; environmental cleanliness is insufficient.
Çözüm
Ensure uniform corona treatment, all areas ≥42mN/m; optimize the coating liquid formulation to improve wettability; operate in a clean environment.
Temel Çıkarım
PET film coating uniformity depends on surface treatment quality and coating process control.
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