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In the injection molding market, higher cycles and higher yields of molding are required for cost reduction. However, changing the molding conditions such as increasing the screw rotation speed or decreasing the cylinder set temperature to meet this demand may cause problems such as heat generation from resin, poor kneading, and wear of the screws and the heating cylinder. The "Sumi-Melt Screw" solves these problems through its shape, which reduces the increase of resin pressure inside the cylinder. In addition, the new screw is expected to perform high-cycle molding with an increased plasticizing capability and decreased mold resin temperature, and increase the yield and extend the screw maintenance interval through reduced resin burning. This report describes the features and effects of the “Sumi-Melt Screw.”
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