| 摘要 |
PROBLEM TO BE SOLVED: To provide foamed bodies in which paper is used as a part of the foaming material, that have an excellent sound absorbing characteristic.SOLUTION: Provided is a foamed body 1A composed of a plurality of foamed cells S2,S3 forming a plurality of spaces, that are produced by foaming a material comprising a pulp fiber component, a synthetic resin component and a starch component as an auxiliary material, and in which the synthetic resin component is a polypropylene resin whose copolymerization morphology is a homopolymer and which has physical properties of melt flow rate being 30 g/10 min, tensile strength being 36 MPa, and tensile elasticity modulus being 1550 MPa, and in which an antioxidant is added. |
