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  Plastic Mold Rectification Ideas for Stress Whitening of Conical Cap Plugs

  Stress whitening is a typical molding defect of conical cap plugs. Under the action of ejection force, residual stress inside the product causes local whitening on the surface, which affects appearanc

  2026/10/19 Plastic Molds

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  How to Reserve Thermal Expansion Clearance During China Mold Assembly

  There is a big temperature gap between room-temperature mold assembly and high-temperature mass production. Mold steel expands with heat. Without reserved clearance during assembly, defects such as cr

  2026/10/19 Chinese Injection Molding

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  What Finishing Processes Are Used to Remove Tool Marks on Injection Molds

  CNC cutting tool marks on mold cavity and core will transfer onto plastic products, creating appearance defects and increasing polishing workload. Severe marks may lead to stress concentration and dem

  2026/10/19 Injection Molds

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  China Injection Mold Hot Runner Troubleshooting and Maintenance Process

  Hot runner is the core feeding unit of precision injection molds, which controls melt transportation and temperature stability during plastic molding. Once faults happen during mass production, manufa

  2026/10/19 Chinese Injection Molding

• Reference Basis for Ejector Pin Clearance Adjustment of Plastic Molds

  Ejector pin clearance directly decides whether mold ejection runs smoothly. Too small clearance causes pin jamming, burning and product scratching; excessive clearance generates flash and damages prod

  2026/10/19 Plastic Molds

• Plastic Mold and Process Solutions for Short Shot Adjustment of Multi-Cavity Molds

  Multi-cavity molds often encounter a defect where parts from some cavities show short shot while others are fully filled. Simply raising injection pressure and speed cannot solve this issue fundamenta

  2026/10/16 Plastic Molds

• Shrinkage Compensation Calculation and Key Points of Plastic Mold Dimension Design for Sleeve Parts

  Sleeve plastic parts are mostly thin-wall cylindrical structures. The shrinkage in radial direction differs obviously from axial direction, with radial shrinkage larger than axial shrinkage. Cavity di

  2026/10/16 Plastic Mold

• Optimization of Parting Surface of Injection Mold to Reduce Flash of Threaded Cap in China

  The parting surface of threaded cap products is mostly at the end of thread or product end face. Annular flash easily appears during mass production. It not only increases manual trimming cost, but al

  2026/10/16 Chinese Injection Molding