Kusukela ngekhulu lama-21, izindinganiso zokuphila zabantu ziyaqhubeka zithuthuka, futhi zibaluleke kakhulu ezinkingeni zemvelo, bese kuzalwa isikhwama sepulasitiki sokuvikela imvelo, futhi ngokushesha sibe intandokazi entsha yabantu.Nasi isingeniso esilula senzuzo yobuchwepheshe yemboni yezikhwama zepulasitiki.

Ngo-2002, kwavela iqoqo lemikhiqizo emisha kanye nobuchwepheshe obusha, okuhlanganisa ukumelana nokuvunywa okuphezulu, ifilimu yepulasitiki esebenza ngezinto eziningi, ukuthuthukiswa kwefilimu ye-aseptic yokupakisha ngokushesha, ifilimu eyinhlanganisela yasekuqaleni ithuthukela ezingeni elijulile, ukwenziwa kwezikhwama, ubuchwepheshe bokuphrinta ezingeni elisha. , ungene enkathini “yenguquko yemibala”.

Ukuthuthukiswa kobuchwepheshe be-multilayer co-extrusion kuguqule ukwakheka komkhiqizo wefilimu esebenzayo nesiqukathi, futhi kwajwayelana nesidingo semakethe.Ngokuthuthuka komnotho wemakethe, ukupakishwa kwezidingo zansuku zonke, ukupakishwa kwezimonyo, ukupakishwa kokudla, ukupakishwa kwempahla yasendlini kubeke phambili izidingo eziphezulu.

Imifino nezithelo amathemba emakethe yamafilimu okupakisha amasha abanzi, okwamanje, ifilimu ye-polyethylene nefilimu ye-polypropylene isetshenziswa kakhulu kunazo zonke izinto zokupakisha ezintsha nemifino.Izithelo nemifino ehlukene kunezidingo ezahlukene zezikhwama zokupakisha ezintsha.Hlobo luni lwezikhwama zefilimu okufanele lukhethwe ngenxa yalezi zici ezilandelayo: ukuqina kwegesi okufanelekile kanye nokugxila okufanele kwe-O2 ne-CO2.Engeza i-ethylene gas absorbent.Ngokumunca i-ethylene ekhishwa yisithelo, ibambezela ukuphefumula kwesithelo futhi isigcine sisisha.

Kungakhathaliseki ukuthi iyiphi imboni yezikhwama zokufaka zepulasitiki ukuze uphile futhi uthuthuke ngokuqhubekayo.Sihlala sisungula futhi sithuthukisa imikhiqizo yethu ukuze sifune imakethe enkulu emqhudelwaneni.