| abstract |
An object of the present invention is to use a polypropylene-based resin composition containing a relatively large amount of filler, having an apparent density of less than 400 g / L, a thickness of 3 mm or less, and an average cell diameter which is not significantly small. An object of the present invention is to provide a foamed polypropylene resin sheet which is controlled to a size equal to or higher than the level and the proportion of open cells is suppressed, is excellent in heat insulation, light weight and heat resistance, and has good thermoformability. A foamed sheet comprising a polypropylene-based resin composition containing 10 to 30% by weight of a filler, having an apparent density of 200 to 400 g / L, a thickness of 0.5 to 3.0 mm, The present invention relates to a foamed polypropylene resin sheet having an average cell diameter of 0.10 to 0.35 mm and a closed cell ratio of at least 50%. [Selection] Fig. 2 |