| 摘要 |
PURPOSE:To produce an extrusion molded product by stably starting the extrusion of a molten resin compsn. without bonding the resin compsn. to the resin passage in a long land part when the extrusion of the resin compsn. to the resin passage in the long land part from a shaping mold is started. CONSTITUTION:At the start time of the extrusion to the resin passage in a long land part 21, a liquid lubricant is supplied to the entire periphery of a molten resin compsn. from introducing ports 251, 252 through porous jars 221,222 and thereafter, th supply of the liquid lubricant is completely changed over to that of a gas lubricant from introducing ports 241, 222 through the porous members 221, 222. |
