Jakunkunan marufi na gefe an yi su da kayan filastik tare da shinge, juriyar zafi da rufewa. Zai iya hana lalacewar abinci, hana iskar oxygenation na bitamin a cikin abinci. Gabaɗaya zaɓi nau'ikan filastik da yawa, gama gari gami da PET/AL/PE, PET/NY/PE, PET/MPET/PE, PET/AL/PET/ NY/AL/PE, PET/NY/AL/RCPP, babban zafin jiki bushe distillation jakar rigar abinci, da dai sauransu Filastik hada co-extrusion film, zai fili aluminum tsare, saboda aluminum tsare marufi jakar yana da kyau shãmaki. Toshe iska, toshe hasken rana, toshe mai, toshe ruwa, kusan dukkanin abubuwa ba za su iya shiga ba; Aluminum foil jakar yana da kyau iska tightness; Marufi na aluminum yana da inuwa mai ban sha'awa, amma kuma yana da kyakkyawan juriya da taushi. Yana kama da babban daraja kuma sananne, tare da sakamako mai kyau na rufewa. Bakin jakar ana iya rufe shi kawai, mai sauƙin sake amfani da shi kuma yana iya sanya samfurin a ciki baya iya shafa shi da sauƙi.