2014年8月4日星期一

small plastic tubes Transparent plastic

Transparent plastic injection molding process should pay attention to the common problems of transparent plastic due to high light transmittance, a necessary requirement plastic surface strict quality requirements, can not have any markings, pores, whitening, fog halo, small plastic tubes, discoloration, small plastic tubes poor gloss defects, and thus the entire injection molding process for raw materials, equipment, molds, and even product design, great attention must be rigorous and even made ​​a special request. Second, because the clear plastic, mostly high melting point, poor mobility, so as to ensure that cleaning products barrel, screw and its accessories to prevent pollution and raw materials or impurities exist in the old screw and accessories depression, especially poor thermal stability of the resin Gidea aluminum jars is present Therefore before use, are applied after the shutdown cleaning agent to clean the screw member can not be adhered to impurities when no screw cleaning agent, available PE, PS resin such as cleaning of the screw. When the temporary shutdown to prevent raw stay a long time at high temperature, causing lower solution should be drier and barrel temperature decreases, such as PC, PMMA, such as barrel temperature lip balm container should be reduced to below 160 ℃. (PC hopper temperature should be reduced to below 100 ℃) surface quality, often at a higher temperature, injection pressure, injection
When speed and other parameters for fine-tuning, both full of plastic injection mold making, and does not produce stress and cause deformation and cracking.                                                                                                                     

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