How to solve the incomplete masterbatch dissolution?
Incomplete masterbatch dissolution in injection molding can cause uneven surface color of the product, which is not allowed for products with appearance requirements. So, what are the reasons for incomplete dissolution?
1. Masterbatch quality. If the masterbatch has high impurity content and uneven particle size, it will affect the solubility of the masterbatch.
2. Properties of plastic material. The melting point and viscosity of plastic materials will affect the solubility of the masterbatch.
3. Injection molding process. Unreasonable injection molding settings, such as low barrel temperature and too fast injection speed, will also affect the dissolution of the masterbatch.
Specific solutions:
1. Select qualified masterbatch.
2. Choose the right materials. Choose plastic materials with melting point and viscosity suitable for masterbatch.
3. Strictly control the injection molding process. Control parameters such as barrel temperature and holding time to ensure that the master batch is fully dissolved.
