Plastic Molding Manufacturer | China Custom Plastic Parts Services Contact@china-plasticparts.com
Author: MULAN –Plastic Molding Manufacturer
The application range of plastic parts is more and more extensive, from simple tableware, kitchen utensils to complex mechanical parts, electronic product casings, etc. When processing and manufacturing, we must pay attention to its precision requirements from the beginning of mold manufacturing. What factors determine the precision of plastic injection molding? How can we improve the precision of thin-walled injection molding? The raw edge is the benchmark. 2. The relationship between pressure and speed is partially the same. The purpose of acting on the mold is to make the raw materials enter the mold and fill all corners evenly, thoroughly and in an appropriate amount.
If it is too low, it will cause short shots, shrinkage, if it is too high, there will be hairs, overfilling, mold sticking, burning, vulnerable molds and high internal stress and other undesirable phenomena. 3. The speed determines the condition of the raw materials in the mold runner and the finished product. If it is fast, it will have burrs, overfill, burnt, and if it is slow, it will cause short shots, shrinkage, poor bonding and easy breakage. 4. Temperature The raw material is different, the temperature is different, if the temperature is too low, the melt will not penetrate, resulting in uneven color, and the internal stress of the finished product will increase.
If the temperature is too low and the pressurization is too high, the screw may break. If the temperature is too high, the product will have burrs, and the temperature difference will cause shrinkage due to cooling. The raw material will decompose, turn yellow, change color, and break easily. The cooling time becomes longer, and the gas is not easy to discharge.