Extrusion & Post
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Longitudinal Stripes on PBT Extruded Plate
Fenómeno do problema
Continuous lines along the extrusion direction appear on the surface of the extruded plate.
Análise das causas
Local damage or material hang-up on the die lip; scratches on the three-roll surface; gel or impurities in the melt.
Solução
Polish the die lip to repair the damage; clean the three-roll surface; check the filter screen and raw material quality.
Conclusão principal
PBT plate stripes mainly come from mechanical damage and impurities.
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