Why Does Thermochromic Pigment Bleed or Migrate During Injection Molding?
Quick Answer Thermochromic pigment bleeding or migration during injection molding can occur, but microcapsule rupture is not always the only cause. Excessive heat, long residence time, high mechanical stress, poor dispersion, or incompatibility between the masterbatch carrier and base resin can all contribute to abnormal color behavior. If the microcapsules are damaged, mobile components inside th...
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