Process for preparing a sheet of polymer-based foam

摘要

A continuous process for the preparation of a polymer-based foam sheet at ambient temperatures wherein the foam is produced from a reaction product capable of curing at ambient temperatures formed by the reaction of a reactant composition comprising a prepolymer, such as an isocyanate-capped polyether, and water, comprising: (a) providing a continuous substrate; (b) depositing said reaction product onto said substrate; (c) compressing said reaction subjecting said product to at least one compression of a predetermined degree after said reaction product has creamed but prior to the time said reaction product has finally cured; and (d) finally curing said reaction product.