The best way to prevent defects in injection molded plastic parts

When it comes to injection molding of plastic parts, there is several room for error. Quality issues with injection molded parts range from insignificant surface defects to serious problems that affect the performance, safety and functionality of the final product. 4 Helpful WaysTips to Prevent Defects in Common Plastic Injections:

injection speed

Reducing resin injection speed has been shown to significantly reduce burn marks. Burn marks are usually surface marks caused by overheating of the resin or trapped air. Reducing the resin injection speed can reduce the possibility of air entrapment, optimize degassing and venting systems, and can also reduce mold/melt temperatures.

 

Material selection

Choosing the right materials can enhance a product’s versatility and functionality. It is recommended that you work with well-informed injection molding and design engineers to understand how various materials can optimize the life of your plastic parts. The selection of materials for injection molded parts is usually centered on the application of the product. Plastic requirements for products in the food industry can be quite different from those for medical applications.

Process parameters

The color of the finished product is inconsistent with the color of the projection. This failure is usually caused by burnt barrel temperatures, remaining pellets in the hopper, or unused resin in the feed area. To prevent discoloration of the final product, it is recommended that the feed and hopper areas of the processing machine be flushed between operations.

Tool design and build

A defect-free, flawless injection plastic part starts with the mold. In most manufacturing processes, designing and producing the product is the largest investment; therefore, getting it right from the beginning is critical to the success of your injection molding project. The material and volume of the parts required go a long way when making a mold.

 

Let HUIWEN PLASTICS CO., LTD. help!

The best way to prevent injection molding defects is to work with a knowledgeable service provider who fully understands the characteristics of multiple resins and their applications. Contact us today to learn how HUIWEN Plastics can help you reduce injection molding defects. With over 30 years of experience, we have the expertise and equipment to turn your design dreams into reality.