One of the common issues in plastic products is caused by defects during the knitting process.
Below is a detailed summary provided by the technical team at Zhongke Engineering Plastic Co., Ltd. Please review the following points carefully!
First, the issue of insufficient material filling: 1. Injection pressure is too low. 2. Injection speed is too slow. 3. Poor ventilation in the mold cavity. 4. Water inlet is blocked. 5. Injection time is too short. 6. Nozzle leakage occurs. Second, edge peaks or flash formation: 1. Injection pressure is too high. 2. Mold clamping force is insufficient. 3. Mold sealing is poor, with debris or deformation on the mold surface. 4. Mold joint defects are present. Third, bubbles in the product: 1. Plastic material is damp. 2. Material decomposition occurs. 3. Forming temperature is too low. 4. Poor weld line quality. 5. Raw materials contain impurities. 6. Insufficient thickness around inserts. 7. Mold temperature is too low. 8. Improper design of the water inlet. 9. Moisture content in the material is high. Fourth, welding lines or flow marks: 1. Molding temperature is too low. 2. Material temperature is not sufficient. 3. Poor venting in the mold cavity. Fifth, surface discoloration or black spots: 1. Plastic material is decomposed. 2. Plastic scraps are stuck between the plunger and barrel. 3. Contamination of the raw material. 4. Uneven particle size in the material. 5. Poor exhaust in the die cavity. Sixth, product deformation: 1. Mold temperature is too high, leading to inadequate cooling. 2. Wall thickness variation in the product. 3. Improper ejection from the core pin, causing uneven stress. 4. Rough mold cavity surface, leading to poor demolding and excessive friction. By understanding these common issues and their causes, manufacturers can improve the quality and consistency of their plastic products. If you have any questions or need further assistance, feel free to reach out to the technical support team at Zhongke Engineering Plastic Co., Ltd. Http://news.chinawj.com.cn Submission:
Below is a detailed summary provided by the technical team at Zhongke Engineering Plastic Co., Ltd. Please review the following points carefully!
First, the issue of insufficient material filling: 1. Injection pressure is too low. 2. Injection speed is too slow. 3. Poor ventilation in the mold cavity. 4. Water inlet is blocked. 5. Injection time is too short. 6. Nozzle leakage occurs. Second, edge peaks or flash formation: 1. Injection pressure is too high. 2. Mold clamping force is insufficient. 3. Mold sealing is poor, with debris or deformation on the mold surface. 4. Mold joint defects are present. Third, bubbles in the product: 1. Plastic material is damp. 2. Material decomposition occurs. 3. Forming temperature is too low. 4. Poor weld line quality. 5. Raw materials contain impurities. 6. Insufficient thickness around inserts. 7. Mold temperature is too low. 8. Improper design of the water inlet. 9. Moisture content in the material is high. Fourth, welding lines or flow marks: 1. Molding temperature is too low. 2. Material temperature is not sufficient. 3. Poor venting in the mold cavity. Fifth, surface discoloration or black spots: 1. Plastic material is decomposed. 2. Plastic scraps are stuck between the plunger and barrel. 3. Contamination of the raw material. 4. Uneven particle size in the material. 5. Poor exhaust in the die cavity. Sixth, product deformation: 1. Mold temperature is too high, leading to inadequate cooling. 2. Wall thickness variation in the product. 3. Improper ejection from the core pin, causing uneven stress. 4. Rough mold cavity surface, leading to poor demolding and excessive friction. By understanding these common issues and their causes, manufacturers can improve the quality and consistency of their plastic products. If you have any questions or need further assistance, feel free to reach out to the technical support team at Zhongke Engineering Plastic Co., Ltd. Http://news.chinawj.com.cn Submission:
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