Production & Quality
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rPET Bottle Slight Haze
Problembeschreibung
rPET transparent bottles have worse transparency than virgin material bottles.
Ursachenanalyse
Recycled material has undergone at least one thermal cycle, and the molecular chain state and crystallization behavior have changed; slight haze is more likely to appear during processing.
Lösung
①Fully dry rPET; ②optimize the heating curve; ③agree on clarity standards for high-end transparent bottles and keep samples for comparison; ④control the rPET blending ratio.
Wichtigste Erkenntnis
rPET haze = the sequelae of heat history; standards should be set in advance.
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