Injection Mold 1. If the mold cavity is poorly machined, with defects such as scratches, micro-pores, wear, or rough surfaces, it will affect the gloss of the plastic part. To address this, ensure precise machining of the mold to achieve a lower surface roughness for the cavity; if necessary, polish and chrome-plate the cavity. 2. If the cavity surface has oil stains, watermarks, or excessive mold...

1. Raw Material Quality or Batch Variations: Cause: Differences in raw materials (especially masterbatch) from different batches may lead to color mismatch, or unstable raw material quality can result in inconsistent product colors. Solution: Ensure Consistent Raw Materials: Choose reliable suppliers and perform color difference tests whenever a new batch of materials is used to ensure color consi...