Kupfekedza magaba echikafu kune yakarebesa yakamira uye tsika, sezvo kupfekedza mukati-divi rinogona-muviri rinogona kuchengetedza zviri mukati mugaba kubva pakusvibiswa uye kuzvichengetedza panguva yakareba yekuchengetera, tora epoxy uye PVC semuenzaniso, izvi zviviri. lacquers inoshandiswa kurongedza mukati-rutivi rwemugaba-muviri nechinangwa chekudzivirira kuparara kwesimbi nezvokudya zvine acidic.
BPA, ipfupi yeBisphenol A, chinhu chekuisa che epoxy resin coating. Sekureva kweWikipedia, kune angangoita zviuru gumi nezvitanhatu mapepa esainzi akaburitswa kuburikidza nemaindasitiri akakodzera panyaya yehutano hweBPA uye nyaya yekukakavadzana kwenguva refu neruzhinji nesainzi. Zvidzidzo zvekinetic zvine muchetura zvakaratidza kuti hafu yehupenyu hweBPA muvanhu vakuru ingangoita maawa maviri, asi haiunganidzi mukati mevanhu vakuru kunyangwe kuratidzwa kweBPA kwakajairika. Muchokwadi, BPA inoratidzira yakaderera yakanyanya huturu sekuratidzwa kwayo neLD50 ye4 g/kg (mbeva). Mimwe mishumo yekutsvagisa inoratidza kuti: ine diki inogumbura paganda remunhu, iyo mhedzisiro yacho ishoma pane phenol. Kana ikanyudzwa pamusoro penguva refu mukuedzwa kwemhuka, BPA inoratidza mahormone-senge maitiro anogona kukanganisa kubereka. Zvisinei, mhedzisiro yakaipa pavanhu iri kutyisidzira hutano hwevanhu haisati yaonekwa, muchidimbu nekuda kwehuwandu hwekudya.
Tichifunga nezvekusavimbika kwesainzi, matunhu mazhinji atora matanho ekugadzirisa dambudziko rekudzikisa kufumurwa nenzira yekudzivirira. Zvakanzi ECHA (ipfupi ye'European Chemicals Agency') yakaisa BPA pane runyorwa rwezvinhu zvinonyanya kunetseka, semugumisiro weiyo endocrine properties yakaonekwa. Uyezve, nekuona dambudziko revana vacheche vanogona kutarisana nenjodzi huru panyaya iyi, zvichiita kuti varambidzwe kushandiswa kweBPA mumabhodhoro evana pamwe chete nezvimwe zvakakosha zvigadzirwa neU.S, Canada, neEU pakati pezvimwe.
Nguva yekutumira: Jul-30-2022
