| 摘要 |
PURPOSE: A multi-layered foam dressing material and a producing method thereof are provided, therefore the foam dressing material can release not active pharmaceutical ingredients but water, and inhibit the infection with foreign bacteria, so that the injury can be effectively and rapidly treated. CONSTITUTION: The multi-layered foam dressing material has a thickness of 0.5 to 10 mm, and comprises an outer side film layer(1) having a thickness of 0.5 to 50 micrometer; an inner side absorption foam layer(2) containing a large number of open cells having a diameter of 50 to 500 micrometer; and an injury contacted film layer(3) having a thickness of 0.5 to 60 micrometer and containing pores having an average diameter of 60 micrometer, in which the outer side film layer(1) has no pore; and the injury contacted film layer(3) has 5 to 50% of the pore area. The method for producing the multi-layered foam dressing material comprises the steps of: mixing 40 to 75 wt.% of polyurethane prepolymer with 15 to 45 wt.% of a foaming agent, 5 to 35 wt.% of a bridging agent and 0.5 to 15 wt.% of additives comprising a surfactant, water a protecting agent, a releasing agent, an antimicrobial agent and a pigment; inserting the mixture into a mold; and foam shaping the mixture at 30 to 60 deg. C.
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