| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of more easily manufacturing a polyethylene-based resin foamed sheet containing a polyethylene-based resin foamed layer excellent in ESCR and appearance aesthetic property, and having sufficiently high ratio of closed cells.SOLUTION: A molten resin for forming a polyethylene-based resin foamed layer manufactured by blending a polyethylene-based resin (A) containing a low density polyethylene and a physical foaming agent, and a molten resin for forming a polyolefin resin layer manufactured by blending 20 wt.% to 80 wt.% of an ethylene-propylene random copolymer having a melting point of 135°C or less manufactured by blending with using a metallocene-based polymerization catalyst and 20 wt.% to 80 wt,% of one or more polyethylene-based resin (B) selected from a low density polyethylene, a linear low-density polyethylene and a high density polyethylene, where total of both is 100 wt.%, are coextruded to manufacture a polyethylene-based resin foamed sheet obtained by laminating a polyolefin resin layer on a surface of the polyethylene-based resin foamed layer. |
