Fibre yubushyuhe bwo hasi-ifata fibre ifatwa nka PVA nkibikoresho fatizo hanyuma igakoresha tekinike yo kuzunguruka gel hamwe nibintu bikurikira:
1. Ubushyuhe buke bwamazi.Ntisiga ibisigara iyo bishonge mumazi kuri 20-60 ℃.Uburyo bwa Sodium sulfide bushobora kubyara gusa fibre zisanzwe zishonga mubushyuhe bwo hejuru bwa 80 ° C cyangwa hejuru.
2. Bikwiranye no gutunganya imyenda kubera imbaraga zayo za fibre nyinshi, kuzenguruka fibre yambukiranya igice, guhagarara neza kurwego, uburinganire bwumurongo ugereranije no kuramba.
3. Kurwanya udukoko nudukoko, kurwanya neza urumuri, gutakaza imbaraga nke ugereranije nizindi fibre igihe kirekire izuba ryinshi.
4. Ntabwo ari uburozi kandi butagira ingaruka kubantu no kubidukikije.Kubura sodium sulfide biganisha ku mukungugu wubusa mugihe cyo kuzunguruka.