Functional film and method for manufacturing the same

A functional film, comprising:

• a polyurethane resin matrix, a weight percentage of the polyurethane resin matrix in the functional film ranging from 48 wt % to 90 wt %;
• a plastic optical molding material dispersed in the polyurethane resin matrix, a weight percentage of the plastic optical molding material in the functional fabric film ranging from 8 wt % to 50 wt %;
• wherein the plastic optical molding material is a recycled plastic optical molding material being at least one selected from the group consisting of poly(methyl methacrylate) (PMMA), and polycarbonate (PC);
• and
• a solvent remaining in the polyurethane resin matrix and the plastic optical molding material, wherein a residual concentration of the solvent is between 100 ppm and 300 ppm, and the solvent is at least one selected from the group consisting of dimethylformamide (DMF), methyl ethyl ketone (MEK), toluene (TOL), isopropanol (IPA), and ethyl acetate (EAC);
• wherein the functional film is a continuous waterproof and moisture-permeable film, and the functional fabric film has a water resistance ranging from 5,000 mmH2O to 20,000 mmH2O, a moisture permeability ranging from 50,000 g/m2/day to 150,000 g/m2/day, and a tensile strength ranging from 50 kg/cm2 to 350 kg/cm2.