| 摘要 |
PROBLEM TO BE SOLVED: To provide a polypropylene-based resin foamed sheet having good compression characteristics in spite of having a thin thickness.SOLUTION: There is provided a polypropylene-based resin foamed sheet having a thickness of 0.01 to 0.3 mm and a compressibility of 10 to 60% when compressed at 23°C and 30 kPa, which is obtained by a step of obtaining a foam by foaming a polypropylene-based resin and a resin composition comprising at least one of an olefin-based thermoplastic elastomer and a polyethylene-based elastomer, a step of obtaining a sliced foam by slicing at least one surface in the thickness direction of the foam to expose air bubbles to the sliced surface and a step of stretching the sliced foam in at least one direction. There is provided a polypropylene-based foamed sheet which has a density of 0.01 to 0.5 g/cm, contains air bubbles which are not exposed to both one surface in the thickness direction and the other surface and has an average number of air bubbles in the thickness direction of 2 or more.SELECTED DRAWING: Figure 1 |
