| 摘要 |
PURPOSE:To peel a surface layer without breaking the same by adding a styrenic block polymer or a modified polyolefinic resin to at least one of the surface layer and a base material layer and specifying the thicknesses of both layers. CONSTITUTION:A co-extrusion composite sheet is obtained from at least two layers of a surface layer 2 containing 100-70wt.% of a polyolefinic resin and 0-30wt.% of at least one of a styrenic block polymer and a modified polyolefinic resin and a base material layer 3 containing 100-70wt.% of a styrene resin and 0-30wt.% of one of a styrenic block polymer and a modified polyolefinic resin. 2-30wt.% of a styrenic block polymer or a modified polyolefinic resin is added to at least one of the surface layer 2 and the base, material layer 3. The thickness of the surface layer is set to 50-300mum, By this constitution, the surface layer 2 2 and the base material layer 3 is set to 50-300mum and 250-1,500mum, respectively. By this constitution, the surface layer 2 can be peeled without being broken at the time of use. |
