Skin is the envelope of human being, the functionality of skin is to protect creatures form hurts in the environment. It is also one of the important part in the immunity system and physical functions. Due to the skin play an important role in water retention, therefore, after the skin is injured, a coverage material, that is contained water is needed to absorbed tissue fluid and protects the wound. For this reason, the Tencel and PET low melting point fiber were used to manufacture the composite nonwoven fabric, and the weight ratio of two kinds of fiber was changed to evaluate the physical properties, including of tensile strength, air permeability. Besides, the 3% chitosan solution was extracted 10 ml into the plate and irradiated by UV-ray and the time of UV-ray irradiation was changed. After the chitosan solution is photocrosslinked, it was dried and cast into the film by fizzy-dry machine. The film was immersed in the simulation body fluid to perform the degradability test and evaluate the effect of UV-ray irradiation time on the film to obtain the optimal UV-ray irradiation time. The 8 ml, 3% chitosan solution was extracted and coated on the Tencel/PET nonwoven fabric to manufacture the optimal and functional composite dressing.
