Plastic parts have become an essential component in modern electronic product assembly. The quality of plastic parts depends not only on the quality of the resin itself and the process control during injection molding but also on the design of the injection mold and the selection of the appropriate tonnage for the molding machine.
Workingbear has compiled a collection of technical articles related to plastics for your reference. These include introductions to plastic injection molding, discussions on plastic properties, topics related to screws, and analyses of common quality issues in plastic parts.
Injection Moulding
Quality issues for Injection Moulding
Relationship Between MFI and Re-Grinding Resin

- How to Monitor the Quality of Incoming Plastic Resin?
- 7 Ways to Identify if a Plastic Factory is Using Re-grind Resin
- The Relationship Between MFI and Re-grind/Recycle Resin in Plastics
- Understanding Melt Flow Index (MFI) for Quality Control in Plastic Injection Molding
- Why Re-grind Resin in Plastic Injection Molding Causes Degradation and Weakens Strength