Soft polyurethane foam, method for producing same, and multilayer body

Abstract

A soft polyurethane foam includes: cells, the number of which is 20 to 40/25 mm; and air bubbles leading to the cells and having an opening proportion of 90% or higher. A multilayer body includes a skin and the soft polyurethane foam adhered to the skin, and an air permeability of the multilayer body with respect to an air permeability of the skin is 74% or higher. A method for producing the soft polyurethane foam includes: a first mixing step of mixing a gas with an aid; and a second mixing step of obtaining a mixture by mixing the aid with which the gas has been mixed, a foaming agent, a polyol, and an isocyanate.

Dependencies are inferred from the claim text.