| abstract |
The polyurethane foamed board of the present invention is obtained by mixing and reacting a polyol compound containing a polyol compound and water as a foaming agent with a polyisocyanate component, and having a longitudinal direction, a width direction, and a thickness direction, and foaming thereof. The bulk density is 15 kg/m3 or less, and the ratio (Sa/Sb) of the 10% compressive strength Sa in the longitudinal direction to the 10% compressive strength Sb in the width direction is 2 or more. It is preferable that the 10% compressive strength Sb in the width direction is 3 N/cm 2 or less. Further, it is preferable that the thickness direction of the polyurethane foamed sheet is substantially perpendicular to the foaming direction of the cells in the foam. |