Material Drying
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PET Preform Re-Moistening After Drying
Fenómeno del problema
Drying is qualified but occasional haze still occurs in blowing.
Análisis de la causa
After drying, preforms are re-moistened by exposure in humid environments; open conveying process.
Solución
①Sealed conveying after drying; ②shorten exposure time; ③hopper heat preservation.
Conclusión clave
Preventing re-moistening = the second half of drying.
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