Patent ID: 9056411
Filing Date: 2015-06-16
Classification: B29C,B29K,C08J

Abstract:
1. A method of providing a polymer foam within a hollow cavity, comprising: a) introducing a mesh tube at least partially into the cavity, the mesh tube being characterized in that (1) the volume of the mesh tube is smaller than the volume of the hollow cavity, (2) the mesh tube has an entrance for introducing an foamable liquid mixture containing at least one blowing agent and at least one organic polymer or organic polymer precursor into the mesh tube and (3) the mesh tube contains openings each having an area of from 0.01 cm b) then at least partially filling the mesh tube with the foamable liquid mixture, and then c) expanding the foamable liquid mixture such that the foamable liquid mixture expands and upon expansion at least a portion of the foamable liquid mixture flows through at least some of the openings in the mesh tube and into the hollow cavity and forms a polymeric foam adherent to at least one internal surface of the hollow cavity.