Impembelelo ebangelwa yi-free formaldehyde eveliswa ngexesha lenkqubo yokutshiswa kwesikhumba ikhankanyiwe ziinkampani zokuthunga kunye nabathengi kwiminyaka engaphezu kweshumi eyadlulayo. Nangona kunjalo, kule minyaka idlulileyo kuphela apho le ngxaki ithathelwe ingqalelo kakhulu ngabathungi bokuthunga.
Kwiindawo zokuthunga ezinkulu nezincinci, ingqwalasela ibikukuvavanya umxholo we-formaldehyde okhululekileyo. Ezinye iindawo zokuthunga ziya kuvavanya yonke ibhetshi yesikhumba sazo esitsha ukuqinisekisa ukuba iimveliso zazo zisemgangathweni.
Kubantu abaninzi abakwishishini lesikhumba, ukuqonda indlela yokunciphisa umxholo we-free formaldehyde kwisikhumba kuye kwacaciswa——
Ii-amino resin tanning agents ezimelwa ikakhulu yi-melamine kunye ne-dicyandiamide, zezona zibangela ukuveliswa kwe-free formaldehyde kwinkqubo yokwenza ulusu kunye nokukhutshwa rhoqo kwe-formaldehyde kwizinto zesikhumba. Ngoko ke, ukuba iimveliso ze-amino resin kunye nemiphumo ye-free formaldehyde ezizisayo zinokulawulwa ngokupheleleyo, idatha yovavanyo lwe-free-formaldehyde nayo ingalawulwa ngokufanelekileyo. Singatsho ukuba iimveliso ze-amino resin series zezona zinto ziphambili ezibangela iingxaki ze-free formaldehyde ngexesha lenkqubo yokwenza ulusu.
Isigqibo senza imizamo yokuvelisa ii-amino resins ze-formaldehyde eziphantsi kunye nee-amino resins ezingenayo i-formaldehyde. Uhlengahlengiso malunga nomxholo we-formaldehyde kunye nokusebenza kwee-agents ze-tanning luhlala lusenziwa.
Ngokuqokelela ulwazi, amava, ubuchule, uphando kunye nophuhliso ixesha elide. Okwangoku, uyilo lwethu lwemveliso engena-formaldehyde luphelele. Iimveliso zethu ziye zafumana iziphumo ezinqwenelekayo, zombini malunga nokuhlangabezana nemfuno 'ye-zero formaldehyde' kunye nokuphucula nokusebenza kwee-agents zokutshisa isikhumba.
Inceda ekuveliseni iinkozo ezintle nezicacileyo ezinombala oqaqambileyo
Inceda ekuveliseni iinkozo ezipheleleyo neziqinileyo
Nika ulusu ulusu olupheleleyo, oluthambileyo noluqinileyo
Inika iinkozo eziqinileyo nezicolekileyo kwaye inika amandla amahle okudaya.
Inika iinkozo eziqinileyo nezithambileyo
Njengeshishini elinoxanduva siza kuyithwala le nto njengoxanduva lwethu kwaye sisebenze ngokuzingisa nangokungagungqiyo ekufezekiseni usukelo lwethu lokugqibela.
Hlola okungakumbi