Material Drying
5 görüntüleme
HDPE '2079851475616104457 parison bubbles
Sorun Belirtisi
Bubbles are visible inside the parison, and weak spots appear in the container wall after '2079851475616104457.
Neden Analizi
Raw material moisture, feed section cooling leakage, screw and barrel wear entraining air; high regrind ratio with fine powder also brings air.
Çözüm
①Dry the raw material (pre-drying recommended for HDPE regrind); ②check for cooling water leakage in the feed section; ③check screw wear; ④increase back pressure to vent.
Temel Çıkarım
For parison bubbles, check water first, then wear and regrind.
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