Ukuze kwandiswe isikhathi seshelufu sokudla, imithi nezinye izinto, izinto eziningi zokupakisha zokudla nezidakamizwa manje zisebenzisa amafilimu ayinhlanganisela ye-multi-layer co-extrusion.Njengamanje, kunezingqimba ezimbili, ezintathu, ezinhlanu, eziyisikhombisa, eziyisishiyagalolunye, ngisho neziyishumi nanye zezinto zokupakisha eziyinhlanganisela.Ifilimu ye-Multi-layer co-extrusion ifilimu ekhipha izinto ezihlukahlukene zepulasitiki kusuka kufa elilodwa ngesikhathi esisodwa ngokusebenzisa iziteshi eziningi, ezinganikeza ukudlala ngezinzuzo zezinto ezihlukahlukene.
Ifilimu eyinhlanganisela ye-Multi-layer co-extruded yakhiwa ikakhulukazi i-polyolefin.Njengamanje, izakhiwo ezisetshenziswa kabanzi zihlanganisa: i-polyethylene / i-polyethylene, i-polyethylene / i-vinyl acetate copolymer / i-polypropylene, i-LDPE / i-adhesive layer / EVOH / i-adhesive layer / LDPE, i-LDPE / i-adhesive layer / EVOH / EVOH / i-adhesive layer / LDPE.Ubukhulu besendlalelo ngasinye bungalungiswa ngenqubo ye-extrusion.Ngokulungisa ukushuba kwesendlalelo sesithiyo kanye nokusetshenziswa kwezinhlobonhlobo zezinto ezivimbelayo, ifilimu enezakhiwo ezihlukene zokuvimbela ingaklanywa ngendlela eguquguqukayo, futhi impahla yokuvala ukushisa nayo ingashintshwa ngokuguquguqukayo futhi yabelwe ukuhlangabezana nezidingo zokupakishwa okuhlukile.Le nhlanganisela ye-multilayer kanye ne-multi-function co-extrusion iyisiqondiso esivamile sokuthuthukiswa kwezinto zefilimu zokupakisha esikhathini esizayo.