Shenzhen mold manufacturers share how to solve the problem of incorrect color and gloss of plastic injection molded products.
Plastic products produced by molds usually have a very smooth surface and good color quality. However, in the actual production process, issues with color and smoothness often arise, leading to the creation of many defective products. Apart from material issues, Shenzhen DPLASTIC Mold Factory also analyzes several points.
Reasons for the poor color and gloss of products produced by injection molding:
1. Poor surface finish of injection molds, rust stains on the cavity surface, and inadequate mold venting.
2. Excessive use of recycled materials, poor quality plastic or colorants mixed with moisture or other impurities, and poor quality lubricants.
3. Defects in the injection mold’s gating system, requiring enlargement of the cold slug well, flow channel, polishing of the main runner, branch runner, and gate.
4. Low material and mold temperatures, with the option of using local heating for the gate if necessary.
5. Adequate plasticizing of the material while preventing degradation, ensuring stable heating and sufficient cooling, particularly for thick-walled parts.
6. Sufficient mold clamping force during the injection mold production process.
7. Insufficient injection mold processing pressure, slow speed, inadequate injection time, and insufficient back pressure leading to poor density and dark surface.
8. Preventing cold material from entering the component, and if necessary, switch to a self-locking spring or reduce the nozzle temperature.
When such issues arise, troubleshooting using the above methods can help address production problems effectively, minimizing their impact. In plastic injection molding, ensuring product color and gloss consistency and quality is crucial. Only by continuously optimizing the production process and improving the quality of molds and materials can you produce products that meet requirements and enhance competitiveness.