Injection Molding Troubleshooting Guide （注塑故障排除指南）.pdf

MDE Injection Molding Troubleshooting Guide Injection Molding Troubleshooting Guide Without customers, we would have no purpose. Our mission, therefore, is to satisfy the needs of our customers and facilitate improvement in their profitability by offering a comprehensive range of engineering thermoplastic compounds with a unique balance of Quality, Value, and Service. 1 MDE Injection Molding Troubleshooting Guide Injection Molding Trouble shooting guide The purpose of this guide is to identify a broad range of molding problems that can arise in injection molded parts. This is intended as a guide only and may not be the optimum solution for every application. When troubleshooting, it is important to remember that the first step is to identify the “true” issue. When making processing changes, make one change at a time and allow two cycles, at a minimum, before moving on. If the change made does not fix the problem, then you should put that setting back to it’s original setting before making the next change. When it is necessary to request technical service, please have the following information available. 1. What type of problem, i.e. molding, part failure 2. Material type and lot number 3. Injection molding parameters 4. Nominal wall thickness, gate size, number of cavities 5. Material handling procedures, regrind percent used, drying times and temperatures 6. Shot size versus barrel size Black Specks Possible Cause Suggested Remedy 1. Contamination in material Replace with new material 2. Heater Band malfunction Check for over run/over heating 3. Contamination from previous run a) Clean screw and barrel b) Check for h