Ibisobanuro byose mubice bikurikira "Ibyuka bihumanya" byakusanyirijwe muri EWPAA: Icyitonderwa cya tekiniki, imyuka ya Formaldehyde iva muri Plywood na Laminated Veneer Lumber.
Iki gice kivuga ku nganda zikomeje kwipimisha imyuka ihumanya ituruka ku bicuruzwa byandikiwe na EWPAA, mu ncamake ubushakashatsi bwakozwe na EWPAA buvuga ko imyuka iva mu bwoko bwa A Bonded ibicuruzwa, hamwe na fenolike, byerekana hejuru ya 90% by’umusaruro wa EWPAA ufite imyuka ihumanya neza.
Formaldehyde
Formaldehyde ni gaze itagira ibara, ikomeye ihumura iboneka mubisanzwe mubidukikije kandi ikoherezwa nibikorwa nko kubora, gutwikwa kandi mubisanzwe nubwoko bwose bwibiti.
Imyuka yangiza
Pande ikorwa muburyo bubiri bwibanze: Fenol Formaldehyde (PF) na plastike ya amino, irimo Melamine Urea Formaldehyde (MUF) na Urea Formaldehyde (UF).
Hariho itandukaniro rinini muri chimie hagati yubwoko bubiri bwamavuta. Hamwe nibicuruzwa bya PF, nyuma yurwego rwohejuru rusigara rwa formaldehyde kuva mubikorwa byo gukora bimaze iminsi mike, ntibisohora fordehide.
Ibiti bya PF, bishobora kumenyekana n’ibara ryirabura, byitwa Ubwoko A munsi y’ibipimo bya ply byo muri Ositaraliya na Nouvelle-Zélande nkuko bikoreshwa mu gukora pani yubatswe, ibicuruzwa byo mu nyanja byo hanze (Ubwoko A).
Mu Burayi no muri Amerika, ibicuruzwa bifitanye isano n’ibiti bya PF bishyirwa mu rwego rwo kudasohora kandi bisonewe amabwiriza y’ibyuka bihumanya.
Ibicuruzwa bya pulasitike bya Amino bikunda kuba bifite urugero rwisigara rwisanzuye kandi rushobora gusohora urugero rwa fordehide.
Icyitonderwa cya tekiniki
Ibyuka byangiza imyanda biva muri EWPAA byemewe biri munsi yimipaka yemewe yagenwe na Workplace Australiya kandi ntabwo ari ingaruka zubuzima.
Ibyiciro byangiza imyuka ya Australiya / Nouvelle-Zélande ni ibisobanuro birambuye kumeza ikurikira. Ibicuruzwa byanditseho ibyuka bihumanya E0 na E1 bifite imyuka ihumanya cyane ya fordhide.
Icyiciro cy’ibyuka byoherezwa mu kirere (mg / l) Imipaka y’ibisohoka (ppm) *
Super E0 Ntibisanzwe cyangwa bingana na 0.3 Birenze cyangwa bingana na 0.024
E0 Ntibisanzwe cyangwa bingana na 0.5 Ntibisanzwe cyangwa bingana na 0.04
E1 Ntibisanzwe cyangwa bingana na 1.0 Ntibisanzwe cyangwa bingana na 0.08
Igihe cyo kohereza: Ukwakira-19-2021