Industry information

Solution to surface problems of plastic parts in injection molding production

2021-05-27

Solution to surface problems of plastic parts in injection molding production

Silver wire (because there is gas in the plasticized material, the gas is forced out on the surface of the mold during injection, and white silk lines appear on the surface of the shell)

1. Check whether the raw materials are wet or mixed with other raw materials.

2. Check whether the raw material is decomposed in the barrel.

3. Check whether the injection caliber is too low.

4, mold exhaust is bad.

5. Whether the gate size is too small.

Waving flow marks (because the plastic material flows too slowly in the mold cavity, the frozen plastic material can not stick to the mold, resulting in wavy marks)

1, improve the injection speed.

2, improve the mold temperature.

3, improve the cylinder temperature.

4. Increase the injection caliber or gate appropriately.

Bright streaks on the surface of molded parts (bright streaks appear on the surface of molded parts).

1. Improve the temperature of the melt cylinder.

2, increase the mold temperature.

3. Heat and dry the mold.

4. Clean the mold.

5, adjust the appropriate rotary pressure speed position.

6, drying raw materials.

Insufficient filling (insufficient filling of parts occurs in the injection-molded Mini-Circuit Breaker housing.

1, improve the injection pressure.

2, improve the injection speed.

3, improve the cylinder temperature.

4. Add vent holes to the unfilled parts.

5, expand the size of the gate or shorten the distance of the gate runner