| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a foaming molded article including a polyethylene-based resin composition for non-crosslinked foaming with sufficient processability and foaming state, excellent in flexibility, a mechanical characteristic, heat-resistance stability and a heat-insulation temperature-keeping property and having a high closed cell ratio, sufficient uniformness of the cell and sufficient appearance of a surface, and a food packaging vessel. <P>SOLUTION: The polyethylene-based resin foaming molded article includes the polyethylene-based resin composition for non-crosslinked foaming and has an appearance density of 350-800 g/L and a closed cell ratio of 70% or more. The composition is an ethylene single polymer or a copolymer of ethylene and a specificα-olefin, and includes a linear polyethylene (α) in which the density, the melt flow rate, the Mw/Mn, the number of melting point peaks of the endotherm curve and the crystallization temperature satisfy specific requirements and a branched low density polyethylene (β) by a high pressure method in which the density and melt flow rate satisfy specific requirements at a specific ratio. The melt tension at 190°C is 10-40 mN. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
