| 摘要 |
<p>PURPOSE:To make the vessel superior in surface glossiness, by a method wherein the outermost layer is formed of an olefin polymer which possesses flow properties satisfying a specific formula in a specific flow property testing method and the outermost surface is melt-treated. CONSTITUTION:In a flow property testing method (JISK 7199) by a nozzle having the diameter of 1mm and length of 10mm and a capillary rheometer at a measuring temperature of 190 deg.C, the outermost surface layer is formed of an olefin polymer possessing flow properties satisfying a formulas I, II [tauis shearing stress (dyne/cm<2>) in a flow property testing direction by the capillary rheometer, r is a shearing rate (sec<-1>) at measurement, n is a number of 0.39-0.41] and the outermost surface is melt-treated. Generation of an uneven pattern based on a melt flow of resin such as a shark skin or a flow mark is eliminated and on the one hand, the uneven pattern based on a sand blast surface of a mold is eliminated by melt treatment of the surface of a blow molded matter.</p> |
