I-sheath-core bi-component fiber, luhlobo lwefayibha yemichiza yelaphu eyolukiweyo yendabuko, isetyenziswa ngokubanzi kwisambatho Imfuno esemgangathweni yespinneret iya kuba phezulu kunaleyo isetyenziselwa ilaphu elingalukwanga. I-spinneret esiyivelisileyo ifumene ingxelo entle evela kwintengiso, kwaye yathengiswa kumazantsi-mpuma asia.