Pros: No scrap material: Drastically reduces waste and material cost. Faster cycle times: Less plastic to cool means the cycle can be faster. Better pressure control: Allows for better packing of the part–reduced injection pressure, allowing for multi-cavity molds. Good quality: Improved product quality because of precision injection molding parameter control. Cons: Significantly higher initial cost, more complex maintenance, […]
Author Archives: TONGDA LINK MOLD
Precise control of process parameters is essential for successful PPS molding. Below are key guidelines based on TONGDA LINK’s decade-long expertise in PPS mold design and production: The melting point of PPS material is about 285°C, but its melting temperature is usually between 260°C and 350°C. Therefore, the injection molding temperature must be controlled above the melting […]
Top/Bottom Shell Mismatch Tolerance (Stepping) After assembly, at the seam stop position: Surface Stepping (Top Shell Scraping): If the top shell protrudes beyond the bottom shell. Acceptable Limit: < 0.15mm. Bottom Stepping (Bottom Shell Scraping): If the bottom shell protrudes beyond the top shell. Acceptable Limit: < 0.10mm. Design Recommendation: Some level of mismatch is inherent. To minimize visible surface stepping, design […]