Plastic mold manufacturers, the temperature during injection molding affects the quality of molded products.
The temperature of plastic molds is crucial for injection molding. Well-controlled temperature leads to high-quality products, while poor control can result in defective items. How does temperature impact the quality of molded products?
1. Temperature affects the standard accuracy of molded products, leading to a decrease in pass rate.
2. Significant temperature differences between mold cores and cavities can cause uneven shrinkage of molded parts, resulting in distortion and affecting the appearance of parts.
3. High mold temperatures can cause deformation during demolding, reducing shape and standard accuracy. For certain crystalline plastics, high temperatures promote the crystallization process to prevent standard changes during storage or use. Lower temperatures for flexible plastics reduce shrinkage, improve standard accuracy, shorten cycle times, and enhance production efficiency.
4. Low mold temperatures during injection can increase internal stresses in products, causing warping or cracking, especially in high-viscosity plastics. Temperature impacts the flowability of molten plastic, leading to unclear contours, insufficient filling, cold welds, and reduced mechanical properties. Low mold temperatures also result in rough surfaces with various defects.
The temperature during injection molding significantly affects the quality of mold products. Therefore, it is essential to control and adjust mold temperature properly to ensure the production of high-quality plastic products.