Plastic mold processing of common problems and solutions

Plastic mold products are usually lack of materials of plastic product, which can lead to stress cracking, paste spots, dent, crazing, deformation, cracks, crack network, whitening and fusion. These problems will affect the quality of the plastic molding parts. So how do you solve these problems in plastic mould processing? 1. Rise in the temperature of the plastic mold, the temperature of the feed tube, improve the injection pressure, and an exhaust slot in the parting surface ( Depth of 0. 02 - 0. 04mm） 。 5 - 10 mm. Extend the gate in order to increase flow edge. For a lot of mold, mold will run out of material, mold gate will swell. Flow on the edge of the configuration has been changed, and add the venting needle to improve plastic. Mold finishing. 2. Increase injection pressure, prolong the injection time, lower the temperature in the cylinder and plastic mold temperature, and forced cooling grooves takes place. Fill the flow of the dent fringe. If the dent material is relatively narrow, please thicken the part. Avoid the thickness of the product design is completely different. For frame to dent, elongated shape should be as short as possible. 3. To avoid design thickness difference of product, please add more product the thickness of the gate. Plastic mould cooling and solidification (completely Extend the cooldown timer) Rise, cylinder temperature, reduce the injection pressure, and uniform cooling plastic mold. 4. In order to avoid the product thickness is different, in the place where the thickness of the product is bigger, please set the gate. Due to linear curve and R curve, so products reversibly bend plastic mold, increase the number of ejection rod, and increase the Angle ejection. Degrees. 5. Avoid the thickness difference of the product design, where the product is thicker to add gate, know where to use the product, and where appropriate use can flow of materials. Let the material completely dry. Drying is invalid at high temperatures for short periods of time, but often drying under 85 ° C for 4 hours will raise the temperature of the plastic mold, lower the temperature of the heating tube, heating tube injection nozzle to heat flow. Make it thicker.