Color masterbatch is an important additive used to adjust the color of plastic products.

Color masterbatch is an important additive for adjusting the color of plastic products. When in use, select the appropriate color masterbatch according to product requirements and plastic material. Mix it with plastic raw materials in proportion, and disperse it evenly by stirring or heating. The dosage of color masterbatch should be properly controlled; excessive addition may lead to overly dark color and changes in texture. For storage, keep it away from moisture and sunlight, and avoid prolonged exposure to air. Proper use of color masterbatch can endow plastic products with rich colors while maintaining their performance and quality. Relevant specifications shall be followed during operation to ensure stable color and quality of finished products.

The phenomenon of inconsistent color or gloss on the same surface of a molded plastic part after forming is defined as color difference or gloss variation. Color difference arises from uneven coloring and pigment distribution, or the orientation of colorants varying along the melt flow direction. Damage caused by thermal effects and severe deformation of injection-molded parts, such as excessive ejection force, can also result in uneven color and color streaks.