| 摘要 |
<p>PURPOSE:The titled composition which can be extruded at a high speed and is highly improved in surface roughness, comprising a heat-treated PP and a specified PE. CONSTITUTION:A heat-treated PP (A) of a melt flow rate (MFR) of 0.3-100g/ 10min is obtained by mixing 100pts.wt. (a) PP resin of a MFR of 0.1-20g/10min with 0.002-0.2pt.wt. (b) peroxide having a one-min half-life temperature near the melting temperature of component (a) (e.g., t-butyl peroxyacetate) and heat-treating the mixture by melt kneading at 180-280 deg.C for 1-10min. 60-95wt% component A is mixed with 40-5wt% (B) PE having a crystallinity as determined by X ray analysis >=25%, or alternately, 100pts.wt. resin composition formed by mixing 60-95wt% component (a) with 40-5wt% component B is further mixed with 0.002-0.2pt.wt. component (b) and the resulting mixture is heat-treated by melt kneading at 180-280 deg.C for 1-10min.</p> |
