TPU abu ne thermoplastic polyurethane, wanda za a iya raba polyester da polyether. Fim ɗin TPU yana da kyawawan halaye na babban tashin hankali, haɓakar haɓakawa, haɓaka juriya da juriya na tsufa, kuma yana da kyawawan halaye na kariyar muhalli, ba mai guba, hujjar mildew da antibacterial, biocompatibility, da dai sauransu.