| 摘要 |
PURPOSE: A method for extruding very high molecular weight polyethylene is provided to apply extruded very high molecular weight polyethylene (VHMWPE) to a synthetic resin for an outer cover required for manufacturing a weather strip of a car window. CONSTITUTION: A method for extruding very high molecular weight polyethylene is as follows. VHMWPE having a low molecular weight is used instead of ultra high molecular weight polyethylene (UHMWPE). A T-die module is installed on the bottom end of a synthetic resin discharge part of an extruder for extruding the VHMWPE, and a chill-roll for controlling the cooling of a synthetic resin melted at high temperatures is installed in the extruder. The extruder has an inner space, and the inner space is divided into a hopper section, a middle section, and a pumping section to control the temperature of each section individually. The temperature of the chill-roll of the extruder is controlled to 80-100 deg. C. |
