Site na nlebara anya na-abawanye na nchekwa ọkụ na mmata nchedo gburugburu ebe obibi, rayon fibers (viscose fibers) na-egbochi ire ọkụ apụtala, ọkachasị na ụlọ ọrụ akwa na akwa. Ngwa nke eriri rayon na-egbochi ire ọkụ na-aghọwanye ebe niile. Ọ nwere ike ọ bụghị naanị melite arụmọrụ nchekwa nke ngwaahịa, kamakwa izute mkpa nkasi obi nke ndị na-azụ ahịa. A na-ekewa ihe ndị na-ere ọkụ maka FR rayon fibers na usoro silicon na phosphorus. Silicon usoro ire ọkụ retardants na-enweta mmetụta ire ọkụ site n'ịgbakwunye siloxane na rayon fibers iji mepụta kristal silicate. Uru ha bụ enyi na enyi gburugburu ebe obibi, adịghị egbu egbu, na ezigbo nguzogide okpomọkụ, nke a na-ejikarị na ngwaahịa nchebe dị elu. A na-eji ihe ndị na-eme ka ọkụ na-eme ka ihe ndị na-eme ka ọkụ kwụsị site n'ịgbakwụnye phosphorus dabeere na organic ogige na rayon fibers na iji mmeghachi omume oxidation nke phosphorus. Ha nwere abamuru nke ọnụ ala dị ala, nrụpụta ọkụ dị elu, yana ịdị mma gburugburu ebe obibi, a na-ejikarị ya eme ihe n'ichepụta akwa anaghị kpara akpa.