| 摘要 |
PURPOSE:To make the regular molding of polyolefin-based resin in the period of time as short as possible by removing ethylene-unsaturated carboxylic acid copolymer-based resin from a molding device after the molding of said copolymer-based resin, when the extrusion molding of the ethylene-unsaturated carboxylic acid copolymer-based resin and that polyolefin-based resin are performed by using a molding device in common. CONSTITUTION:The purging agent concerned is one for extrusion molder, which is prepared by compounding inorganic filler powder, chemical blowing agent and preferably further slip agent into ethylene-unsaturated carboxylic acid ester copolymer. The purging method concerned is to purge the ethylene- unsaturated carboxylic acid copolymer-based resin staying in a molder by performing extrusion molding with the purging agent, which is supplied in advance before the molding of polyolefin-based resin, when the molding of the polyolefin-based resin is performed with the same extrusion molder, with which the ethylene-unsaturated carboxylic acid copolymer-based resin is extrusion-molded. |
