| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a polyethylene molded object excellent in dynamic characteristics by improving the productivity of T-die molding. SOLUTION: The molded object is manufactured by the T-die molding of a mixture which contains polyethylene of which the density of 900-below 940 (kg/m<SP>3</SP>) and the MI measured by JIS K7210 is 0.01-100 g/10 min and polyethylene wax of which the density if 890-980 kg/m<SP>3</SP>and the number average molecular weight measured by GPC is 500-4,000 and which satisfies the formula: B≤0.0075×K, wherein B is the containing ratio (wt.%) of the component, of which the molecular weight in terms of polyethylene is 20,000 or above, in polyethylene wax in the case measured by GPC, and K is melt viscosity (mPa s) at 140°C of polyethylene wax. COPYRIGHT: (C)2008,JPO&INPIT |
