Causes and solutions of air bubbles in injection molded parts - Sunmise manufacturing

Sunmise manufacuring focuses on providing customers with solutions for raw materials and additives

1. Causes of bubbles
2. The raw materials used are not sufficiently dried or the raw materials are mixed with air.
3. In the injection molding process, the injection speed is too fast, the temperature of the screw discharge port is too high, the residual glue is too much, and the storage back pressure is low.
4. Poor mold exhaust and low mold temperature.

Second, the solution

1. The raw materials should be fully dried.
2. Lower the temperature of the screw and the discharge port.
3. Increase the back pressure of the storage material and reduce the ejection position of the screw (more residual glue).
4. Reduce the injection speed and increase the mold temperature.
5. Increase the injection holding pressure and time and improve the exhaust effect of the mold.
6. For example, the cold runner gate can keep the bubbles on the nozzle material by changing the injection position.

#injectionmolding

Website: https://www.sunmise.com/

Email: Info@sunmise.com