Kubva muzana remakore rechi21, mararamiro evanhu ari kuramba achivandudza, uyewo anonyanya kukosha kumatambudziko ezvakatipoteredza, uye ipapo kuchengetedza kwezvakatipoteredza bhegi repurasitiki rakazvarwa, uye nokukurumidza kuva mudiwa mutsva wevanhu.Heino sumo yakapusa kune yehunyanzvi mukana weiyo indasitiri yemapurasitiki ekurongedza mabhegi.

Muna 2002, batch yezvigadzirwa zvitsva uye matekinoroji matsva akabuda, kusanganisira yakakwira permeability kuramba, akawanda-inoshanda epurasitiki firimu, aseptic packaging firimu kuvandudzwa nekukurumidza, iyo yekutanga composite firimu iri kusimukira kusvika padanho rakadzama, kugadzira mabhegi, tekinoroji yekudhinda pane imwe nhanho. , kupinda munguva ye“kushanduka kwemavara”.

Iko kuvandudza kweiyo multilayer co-extrusion tekinoroji yakashandura chimiro chechigadzirwa cheinoshanda firimu uye mudziyo, uye yakachinjirwa kukuda kwemusika.Nekuvandudzwa kwehupfumi hwemusika, kurongedza zvinodiwa zvezuva nezuva, cosmetic packaging, kurongedza chikafu, kurongedza kwemidziyo yemumba kwakaisa mberi zvinodiwa.

Miriwo nemichero mitsva yekurongedza firimu musika tarisiro yakafara, parizvino, polyethylene firimu uye polypropylene firimu ndiyo inonyanya kushandiswa michero mitsva uye miriwo yekurongedza zvinhu.Zvibereko zvakasiyana siyana nemiriwo zvine zvinodiwa zvakasiyana zvemabhegi matsva ekurongedza.Ndeapi mabhegi emafirimu anofanirwa kusarudzwa kune zvinotevera: yakakodzera gasi permeability uye yakakodzera O2 uye CO2 concentration.Wedzera ethylene gasi inonwisa.Nekutora ethylene inoburitswa nemuchero, inononoka kufema kwemuchero uye kuita kuti irambe iri nyowani.

Hazvina mhosva kuti ndeipi indasitiri yemabhegi epurasitiki ekurongedza ari kuitira kuti urarame uye kuenderera mberi hunyanzvi.Isu tiri kugara tichigadzira uye kugadzirisa zvigadzirwa zvedu kutsvaga musika wakakura mumakwikwi.