Non drug based wound dressing polymer film and a method of producing the same

A method of producing a wound dressing film, wherein the method comprises:

• dissolving a preset amount of a chitosan and a preset amount of a collagen in a water solution to obtain a first solution;
• and wherein the water solution includes a preset amount of a lactic acid with a preset volume to volume percentage;
• wherein the preset amount of water is 33 ml and wherein the volume to volume (v/v) percentage is 2%;
• dissolving a preset amount of a gelatin in a distilled water separately to obtain a second solution;
• dissolving a preset amount of polyvinyl alcohol (PVA) powder in a distilled water at a preset temperature of 90° C. for a preset time of 1 hour to obtain a third solution;
• cooling the third solution to a room temperature;
• mixing the first solution, the second solution and the third solution with a mixer to obtain a chitosan-PVA-gelatin-collagen polymer mixed solution;
• coating the chitosan-PVA-gelatin-collagen-polymer mixed solution on an aluminium foil support with a preset thickness of 1500-2500 μm by using a manual film applicator or an automatic film applicator to obtain a polymer film;
• drying the polymer film inside an oven at a preset temperature of 28-42° C.;
• sterilizing the dried polymer film, wherein the sterilization is achieved by a thermal radiation and a gamma radiation at a preset dose of 20 kGy;
• and
• packing the sterilized polymer film for a commercial use.