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CONTENTS 1. Injection Molding Machine
4） Backflow prevention valve, check ring The screw head is equipped with the backflow prevention valve to maintain the effective injection pressure by preventing a part of measured resin from backflow through the ditch of the screw at the time of injection. The structure of this valve is indicated in Fig. 1・1-5.
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1. Injection Molding
www.m-ep.co.jp1. Injection Molding 1.1 Injection machine The injection machine is a machine that melt plasticize the molding material inside the heating cylinder and inject this into the mold tool to create the molded product by solidifying inside it. The
4 Thermal Properties - m-ep.co.jp
www.m-ep.co.jp4・2 Thermal Conductivity and Specific Heat As shown in Fig. 4・2‐1, the specific heat of polycarbonate changes with temperature but it can be considered that this is 1.09～1.17J/(g.k) (0.26～0.28cal/g.℃)for the practical temperature range.This value does not differ very much from the common synthetic resins and corresponds to about 3 times of iron and
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