tpe材料特性（TPE material properties）.docVIP

tpe材料特性（TPE material properties） Characteristics of new TPE materials (molding data) Cleaning cylinder is needed before injection The new injection molding machine purchased early before, or in the production of products, raw materials, replace the need to change the color or change in the decomposition of plastic found phenomenon, need to clean or wash for injection molding machine barrel. The cleaning machine barrel usually uses the heating machine barrel cleaning method. Cleaning materials are usually made of plastic raw materials (or plastic recycling materials). For the TPR material, the new material can be used to replace the transition cleaning material. Molding temperature of TPR In the process of injection molding, the accuracy of temperature setting is the key to the appearance and performance of the product. Here are some suggestions for the temperature setting of TPR processing and injection molding. The temperature in the feed area should be set very low to avoid clogging at the inlet and allowing the entrapped air to escape. When the masterbatch is used, the temperature of the transition zone shall be set above the melting point of the masterbatch in order to improve the mixing state. The temperature from the nearest zone of the injection nozzle should be set close to the desired melt temperature. Therefore, after testing, usually TPR products in each region of the temperature range is set: barrel is 160 degrees Celsius to 210 degrees Celsius, the nozzle is 180 degrees Celsius to 230 degrees celsius. The mold temperature should be set high with the injection zones condensation temperature, which will prevent moisture from polluting the mold, resulting in streaks on the surface of the product. Higher die temperatures usually result in longer cycle times, but they can improve the appearance of weld lines and products, so the range of mold temperatures should be between 30 and 40. Mold filling, holding and cooling The process of product forming filling th