How to Deal with Burning in Plastic Product Processing

How to Deal with Burning in Plastic Product Processing

 

During plastic mold processing, trapped air in the mold cavity can compress and ignite, causing localized, large, or even complete discoloration during injection molding. Sometimes, some parts may also be interspersed with strands or granules of yellowish-brown or black charred material. This is caused by overheating and decomposition of the plastic or added flame retardants and UV absorbers within the barrel, or by excessive retention time in the barrel, leading to decomposition and charring, which is then injected into the mold cavity along with the molten material. Below, Shibang Plastic Product Processing explains how to deal with burning.

The following are the solutions:

 

1. Reduce the filling speed.

 

2. Switch to holding pressure after filling to 95% to allow air to escape.

 

3. Add or clean vents and clean the ejector pins.

 

4. Change the gate location.

 

5. Reduce the clamping force.

 

6. Lower the melt temperature.

 

HUIWEN Plastics One-Stop Customization Service

 

The above points summarize how to deal with burning in plastic product processing. For more information, please contact us. HUIWEN Plastics specializes in the production of a wide variety of small appliance housing injection molds, medical plastic molds, and cosmetic injection molds. Our products are highly regarded for their high quality and excellent value, earning them a wide acclaim from our customers. Furthermore, our Shibang Plastics processing factory maintains a comprehensive and scientific quality management system, earning industry recognition for our integrity, strength, and product quality. As a plastic mold manufacturer, HUIWEN adheres to the principle of integrity and is committed to building a company that is trusted by our customers, proud of our employees, and driven by continuous innovation.