PET Preform Bubbles

Fenómeno do problema

Bubbles inside the preform body.

Análise das causas

Water content (insufficient drying) or vacuum bubbles (insufficient holding pressure for thick walls).

Solução

①Verify drying; ②increase holding pressure; ③lower material temperature.

Conclusão principal

Bubbles = water or vacuum.

PET; preform; bubble; drying; holding pressure

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