Hardness 35-90A OF ABS bonded with TPE soft adhesive
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TPE packing plastic injection molding when there is a bubble what is the reason? Today is March 6,2020, a customer called me through the Internet to inquire about the problem, so today we focus on TPE plastic packaging molding when the product surface bubble to analyze what is the reason, tPE plastic bag molding how to solve the problem of bubbles! TPE coating molding bubble cause analysis and countermeasures: 1: Tpe Coating Molding, TPE Sol temperature too high lead to too much volatile, reduce the barrel temperature! Barrel temperature is too high or heating maladjustment, should be cut gradually reduce barrel temperature! 2: Injection pressure is small, holding time is short, when the melt and cavity surface is not close. 3: Injection speed is too fast, when the melting plastic by the role of large shear decomposition, decomposition gas, injection speed is too slow, can not fill the cavity caused by insufficient surface density to produce printing, increase or decrease injection speed. 4: the Sol temperature is too low to lead to unstable filling, the internal stress increases, correspondingly increases the temperature of the barrel and feed nozzle, the material quantity is insufficient, the feeding cushion is too big, the material temperature is too low or the mold temperature is too low will affect the melt material fluidity and the molding pressure, produces the bubble! 5: Using multi-stage injection to reduce crazing, medium speed injection to fill runner, slow speed to fill gate, fast injection, low pressure to fill the mold slowly, so that the gas in the mold can be eliminated in all stages in a timely manner. 6: The rubber material stays in the barrel time too long, needs to reduce the total cycle time. 7: TPE coating materials in molding before the need to bake, the preferred temperature to bake 80 degrees for 2 hours, fully guarantee the drying of materials, to avoid moisture residues! The above 7 points are aimed at TPE plastic bag in the process of forming a number of reasons for bubbles and solutions, I hope to help the people in need! With the development of society and the needs of life, Thermoplastic elastomer TPR materials are also loved by many products. As a professional TPETPR raw materials manufacturer, we will give back to the community with higher quality, in the production process will be every level of quality and safety! More about TPE raw materials related questions can call the consultation, we will be professional service for you to answer!
