Le yibhokisi yomgubo we-double-layer enephepha leplastiki eliphezulu. Iphepha eliphezulu lingaprintwa ngeepatheni okanye iimpawu zokuthengisa, eziza kwenza ukuba ibhokisi yonke ibonakale iphezulu kakhulu. Le bhokisi yomgubo nayo inemodeli emfutshane, eyibhokisi ngaphandle kweplate ephezulu, kodwa enye imilinganiselo yangaphakathi iyafana. Njengesampulu, si-electroplated yonke indawo yebhokisi. Njengemveliso ekufuneka abathengi bayiodole, sinokubonelela ngeetekhnoloji ezahlukeneyo zokunyanga imveliso yomphezulu, njengokutshiza igradient/ ipeyinti yerabha/ipeyinti yematte, ukuhlangabezana neemfuno ezahlukeneyo zabathengi.