Patent ID: 7777091
Filing Date: 2010-08-17
Classification: A61F,A61L,B32B,C08G

Abstract:
1. A method for preparing a two layer hydrophilic polyurethane foam dressing material with improved moisturizing rate, said method comprising laminating a wound contact layer ( 10 ), having a sponge structure composed of multiple open cells ( 12 ) and pores ( 15 ) passing through the cells ( 12 ), with a protective film ( 20 ) at 150˜250° C. under a pressure of 0.25˜1 kgf/cm 2 , wherein said laminating is by heat-press; wherein the wound contact layer ( wherein the mean diameter of the open cells ( wherein the ratio of the open cells to the wound contact layer ( wherein the wound contact layer ( wherein the wound contact layer (