Patent ID: 8476326
Filing Date: 2013-07-02
Classification: A61L,B29C,C08J

Abstract:
1. A method for generating a thermoplastic non-cellular fibrillated foam, the method comprising: melting a thermoplastic resin and dispersion stabilizing agent in a fist part of an extruder to form a polymer melt; adding water to the polymer melt to form an aqueous dispersion in a second part of the extruder; adjusting the pH of the aqueous dispersion to between 8 and 11; adding at least one froth stabilizing surfactant to the aqueous dispersion to form a mixture; adding fiber to the mixture, frothing the mixture to create a froth, and removing at least a portion of the water in the froth to create a foam, wherein the foam generated has a non-cellular fibrillated morphology.