| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite foam that can be used as a mat member etc. that can overcome various problems of the core material of a past mat.SOLUTION: A composite foam is made by laminating a surface material on at least on one side surface of a resin plate foam 1, and the surface material contain a glass fiber 5-200 g/m, pulp 10-200 g/m, etc. The resin plate foam is a polyolefin resin foam of which average value of an aspect ratio (Dz (maximum diameter parallel to a plate thickness direction)/Dxy (parallel maximum diameter to width of the plate or the length direction)) of the subtending cell is 1.1-4.0 and its expansion ratio is 3-20 times. The composite foam is obtained by laminating the surface material on at least to one side of the foaming plate before it foams, controlling the foaming in the two-dimensional direction (x y-direction) in the surface of a foaming sheet when foaming, and making it foam only in the thickness direction (z direction). |
