Molding Process
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PVC Cable Compound Color Drift
Fenómeno del problema
Batch-to-batch color difference of cable compound, affecting product identification consistency.
Análisis de la causa
Heat history differences slightly change PVC base color; stabilizer/pigment batch differences; PVC is heat-sensitive, slight degradation changes the base color, superimposed with pigment batch differences forming color difference.
Solución
①Stabilize processing temperature and residence time; ②Control raw material batch consistency; ③Consider PVC base color change when color matching; ④Strengthen incoming material inspection; ⑤Establish batch color comparison system.
Conclusión clave
PVC cable compound color difference = 'heat history management': PVC base color drifts with heat history, color matching should reserve for base color change; batch consistency is the lifeline of cable compound.
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