Uboya bobisi bukwabizwa ngokuba yintsinga yobisi.Ngeminyaka yee-1970, yaphuhliswa ngempumelelo eJapan.I-fiber yeprotheni yobisi luhlobo lwe-casein kunye ne-linear macromolecular structure ngokusebenzisa i-dehydration, i-deoiling, i-degreasing, ukuhlukana kunye nokuhlanjululwa;Emva koko ixutywe, idibanise kwaye ihlonyelwe kunye ne-polyacrylonitrile ngeendlela eziphezulu zobugcisa ukulungiselela isisombululo sesitokhwe esijikelezayo;Ekugqibeleni, yenziwe ngokujikeleza okumanzi, ukuqina, ukuyila, ukomisa, ukukrazula, ukuseta kunye nokusika i-fiber emfutshane (i-filament winding).Luhlobo olutsha lwefayibha yeprotheyini yezilwanyana eyahlukileyo kwifiber yendalo, ifayibha ehlaziyiweyo kunye nefayibha yokwenziwa.Ikwabizwa ngokuba yisilika yobisi kunye nefiber yobisi.Yiprotheyini yobisi efunyenwe ngokuthambisa kunye nokukhupha ubisi olumanzi kunye nokongeza into yokuthambisa ukwenza ubisi lube ludaka.Emva koko iye yajijwa ibe yifayibha yeprotini yobisi ngenkqubo yokusonta emanzi kunye nonyango lwezenzululwazi, ize ijikelezwe ibe yisilika yobisi enokulukwa.Inxalenye ephambili yelaphu ngumxube weprotheyini yobisi lwefiber kunye ne-polyacrylonitrile