| 摘要 |
PROBLEM TO BE SOLVED: To provide a polypropylene-based resin foamed sheet excellent in secondary processes such as a heat-forming, etc., heat resistance, light weight, oil resistance, rigidity, etc., a polypropylene-based resin-laminated foamed sheet obtained by forming a non-foamed layer on the sheet, and a polypropylene-based resin foamed molded article obtained by heat-forming these sheets without forming an extreme thin thickness part at the side part, etc., of a container and excellent in heat resistance, light weight, oil resistance and rigidity. SOLUTION: This extruded foamed sheet using the polypropylene resin as a base resin is characterized by having 0.1-0.3 g/cc density, 1-5 mm thickness,≥60 % isolated cell ratio and≤0.3 mm straightness. The polypropylene-based resin-laminated foamed sheet obtained by forming the non-foamed layer consisting of a polypropylene-base resin on at least one side surface of it and having≤0.3 mm straightness, the method for producing the foamed sheet, and the polypropylene-based resin foamed article obtained by heat-forming the sheet are also provided. COPYRIGHT: (C)2005,JPO&NCIPI |
