amasakhiwo esihlabelelwa kuhlu ephakathi
Izikhwama ezicacile ezibolayo zimelela isinyathelo esiguqukayo esiqhubekayo ekuxazululeni izixazululo zokupakisha ezizinzile, ezihlanganisa ukuzibophezela kwemvelo nokusebenza okusebenzayo. Lezi zikhwama ezintsha zakhiwe kusetshenziswa ama-polymer athuthukile angenabungozi emvelweni, acekela phansi ngokuhamba kwesikhathi lapho efakwa ezimweni ezifanele, angashiyi zimfudu eziyingozi. Izikhwama zigcina ukucaca nokuqina okufanayo nezikhwama zepulasitiki ezivamile kuyilapho zinikeza izinzuzo ezingcono kakhulu emvelweni. Zenziwa ngenqubo esezingeni eliphakeme eqinisekisa ikhwalithi engaguquguquki kanye nokwenza izinto zibonakale, okwenza zibe kuhle kakhulu ekuthengiseni, ekugcinweni kokudla, nasekusetshenzisweni okujwayelekile kokupakisha. Lezi zikhwama zinamakhono athuthukile okuvikela umswakama futhi zingamelana nezimo zokushisa ezihlukahlukene, okwenza zilungele ukugcinwa esiqandisini nasekamelweni. Isakhiwo sazo samangqamuzana senzelwe ngokukhethekile ukuba siwohloke ezindaweni zokwenza umquba zingakapheli izinsuku ezingu-180, kodwa siyahlala sizinzile futhi sihlala isikhathi eside phakathi nesikhathi esihlosiwe sokusetshenziswa kwaso. Lezi zikhwama zitholakala ngobukhulu nobukhulu obuhlukahlukene, zinikeza ukusebenziseka okuhlukahlukene kwezicelo ezahlukene ngenkathi kugcinwa izakhiwo zazo eziyinhloko ezibolayo. Izinto ezisetshenzisiwe zivunyelwe yi-FDA ukuba zingene ekudleni futhi zihambisana namazinga omhlaba wonke okubola, kuhlanganise nezitifiketi ze-ASTM D6400 ne-EN13432.