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This study investigates the effects of the molding conditions on the microstructure of PC film and ink wash-out. We compare two molding processing of IMD: conventional injection molding and injection compression molding. The molding conditions include melt temperature , mold temperature , and injection speed. The microstructure on the surface of PC film (0.175mm) was made by hot-embossing processing. The average depth of microstructure was 23μm. Both microstructure decay and ink wash-out made by injection compression molding were much better than that by conventional injection molding. Mold flow analysis software to explore the reasons of the ink washed by the research , we found that the conventional injection molding , plastic flow , shear rate changes can be observed in the low mold temperature , low melt temperature , and the low injection speed , et low shear rate , at the same temperature , mold temperature , the greatest impact. Injection compression molding , also observed the change of the plastic flow shear rate , shear rate reduced 90% compare with conventional injection molding , reduced a lot of ink wash-out.
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