Method for producing hydrophilic foam dressing and hydrophilic foam dressing produced thereby

Abstract

Disclosed herein is a method for producing a polyurethane foam dressing that protects injuries such as wounds or burns and is useful for wound healing. More particularly, the present invention provides a method for manufacturing a polyurethane foam dressing with remarkably improved productivity and processing efficiency, which can improve physical properties of the polyurethane foam dressing. Themethod comprises: preparing a moisture permeable waterproof polyurethane film layer; preparing a polyurethane prepolymer; preparing a polyurethane foaming mixture; obtaining a tacky gel type polyurethane foam layer; laminating the tacky gel type polyurethane foam layer on the polyurethane film layer; and winding the produced polyurethane foam dressing in a roll form and then ageing the foam dressing. The method further includes, impregnating the polyurethane foam with a moisturizer and drying the foam and, then, treating the foam with oxygen plasma to modify a surface of the foam dressing, thereby improving absorption rate of the foam dressing. The method of the present invention has advantages such as remarkably improved productivity and processing efficiency allowing mass production of foam dressings, thereby considerably reducing production costs and enabling supply of low cost foam dressings with improved physical properties.

Description

technical field [0001] The invention relates to a method for preparing a polyurethane foam dressing that protects wounds such as wounds and burns and helps wounds heal, especially a new process for preparing a polyurethane foam dressing that greatly improves the productivity and processing efficiency of the foam dressing and improves physical properties. A polyurethane foam dressing prepared in this way. Background technique [0002] Wound management is the foundation of medicine and has a long history. According to the papyrus (Papyrus) documents, from 5000 BC, animal oil or honey, cotton, etc. were used for the treatment of wounds. With the development of history, wound treatment technology has also undergone many changes and developments. In 1962, the zoologist Winter (Winter) published a research paper stating that keeping the wound moist is more helpful for its treatment than drying the wound and scabbing. After that, the effectiveness of wound moistening treatment ha...

AI Technical Summary

Problems solved by technology

[0012] However, although the above-mentioned patented technology of the present inventor greatly improves its productivity compared with the prior art, its storage period is also limited, so starting After about two hours, the foaming mixture on the surface of the coating machine begins to solidify, and as time goes by, it becomes more and more difficult to produce products with a certain thickness

Also, polyurethane foam is not fast enough to absorb exudate or blood smoothly

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