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1. Impurities are mixed into plastics, or different types of plastics are mixed together, or plastics of different grades are mixed.

2. The plastic is too cold or contaminated with foreign substances mixed in.

3. The mold temperature is too low or the material cools down too quickly, resulting in poor material fluidity.

4. Insufficient injection pressure or too slow injection speed.

5. The injection time is set too long.

6. Improper plastic mixing ratio or uneven plasticization.

1. Use plastics of the same grade and avoid mixing plastics with impurities or decorative properties.

2. Increase the temperature of the melt glue cylinder and clean it.

3. Increase the mold temperature and material temperature.

4. Increase the injection pressure and speed.

5. Reduce the setting value of the injection time.

6. The mixing ratio of plastic and recycled materials should be appropriate, and the process parameters should be adjusted to ensure uniform plasticization.

1.Impurities are mixed into the plastic or different grades of plastic are used.

2. The plasticizing capacity of the injection molding machine is insufficient, and the capacity of the injection molding machine is close to the mass of the product.

3. The plastic particles are uneven or too large, resulting in uneven plasticization.

4. The temperature of the material and the mold is too low.

5. The injection nozzle temperature is low, resulting in a small injection speed.

1.Prevent impurities from being mixed in and prevent incorrect addition of materials.

2. Adjust the injection molding machine model to match the injection capacity with the plasticizing capacity of the model.

3. Adjust the process technical parameters to ensure uniform plasticization.

4. Increase the temperature of the glue melt cylinder and the die temperature.

5. Increase the temperature of the injection nozzle to increase the injection speed.

1. Poor plastic performance, either decomposition and polymerization reduction, hydrolysis, or poor pigment quality and deterioration.

2. The plastic is damp or contains moisture.

3. The proportion of recycled plastic materials is too high or the supply is insufficient.

4. There are impurities, immiscible materials or poor plasticization in the plastic.

5. Uneven contraction, poor cooling and residual stress, etc., increase internal stress.

6. Poor product design, such as insufficient strength, sharp corners and notches.

7. The injection pressure is too low and the injection speed is too slow.

8. Short injection time and short pressure-holding time.

9. Low material temperature, low mold temperature, and low nozzle temperature.

1.Use plastics with good performance and no deterioration or decomposition.

2. Dry the plastic.

3. Select the proportion of recycled materials reasonably to ensure material supply.

4. Remove impurities and immiscible materials from the raw materials.

5. Adjust the process technology parameters and eliminate stress.

6. Modify the design of the tool and die to eliminate sharp corners and notches.

7. Increase the set values of the injection pressure and speed.

8. Increase the set values for injection time and holding pressure time.

9. Increase the temperature of the glue melt cylinder and the nozzle as well as the temperature of the die.