What is Flash Injection Molding?
What is a flash injection molding? Flash, also known as overflow, flare, burr, etc., mostly occurs at the opening and closing positions of the mold, such as the parting surface of the movable mold and the static mold, the sliding part of the slider, the gap of the insert, and the hole of the ejector pin. […]
5 Injection Molding Defect Solutions
What are the injection molding defects? The phenomena and solutions of various injection molding defects refer to the phenomenon and corresponding solutions of cracks, insufficient filling, wrinkles, pockmarked surfaces, shrinkage pits, overflow, etc. Injection Molding Defect 1. Cracking Cracking is a common defect in plastic products, and the main cause is due to stress and […]
How does Back Pressure Affect Injection Molding?
How back pressure affects injection molding? The back pressure during pre-molding indicates the pressure in the metering chamber of the screw during pre-molding. Back pressure has a greater influence on melt temperature The increase of backpressure makes the material in the screw groove compact and prolongs the thermal process of the material in the screw. […]