Loaʻa ka pauka metala i nā ʻāpana like ʻole i hana ʻia mai nā mea like ʻole, e like me ka nickel, chromium, silicon, Manganese he ikaika kiʻekiʻe a me ke kūpaʻa kemika kiʻekiʻe e like me ka media filtration i ka wā o ke kaʻina o ka polyester a me ka polyamide yarn spinning.He ʻano ʻano maʻamau ʻole ʻo Futai me nā hiʻohiʻona ʻē aʻe e hoʻopaʻa pono i nā ʻāpana mai ka polymer hoʻoheheʻe ʻia i mea e hōʻemi ai i ka paʻa ʻana o nā spinnerets a me ka haki ʻana o ka wili.
Pono e noʻonoʻo ke koho ʻana i nā pauka metala no ka kānana polymer i nā mea e like me ka hoʻohālikelike ʻana me ka mea polymer, ka nui o ka nui o nā mea i makemake ʻia, ka pono kānana ʻana, a me nā mea kemika a i ʻole nā koi kūlohelohe.