Mfundo Zachilengedwe ndi Malangizo Opanga
M'zaka zaposachedwapa, kusintha kwa nyengo ndi mitundu yosiyanasiyana ya kuipitsa zinthu zakhala zikunenedwa mosalekeza, zomwe zikuchititsa chidwi mayiko ndi mabizinesi ambiri, ndipo mayiko apereka ndondomeko zoteteza chilengedwe motsatizanatsatizana.
United Nations Environment Assembly (UNEA-5) idavomereza chigamulo cha mbiriyakale pa 2 Marichi 2022 kuti athetse kuyipitsa kwa pulasitiki pofika chaka cha 2024. M'gawo lamakampani, mwachitsanzo, ma CD a Coca-Cola a 2025 padziko lonse lapansi ndi 100% yobwezerezedwanso, ndipo Nestlé's 2025 phukusi ndi 100. % zobwezerezedwanso kapena zogwiritsidwanso ntchito.
Kuphatikiza apo, mabungwe apadziko lonse lapansi, monga chuma chokhazikika chozungulira CEFLEX ndi chiphunzitso cha ogula CGF, amaikanso patsogolo mfundo zamapangidwe azachuma komanso mfundo zamapangidwe agolide motsatana.Mfundo ziwiri zapangidwezi zimakhala ndi njira zofanana pachitetezo cha chilengedwe cha ma CD osinthika: 1) Chida chimodzi ndi polyolefin zonse zili m'gulu la zipangizo zobwezerezedwanso;2) Palibe PET, nayiloni, PVC ndi zinthu zowonongeka zomwe zimaloledwa;3) Chotchinga chotchinga chotchinga Gawo silingapitirire 5% yonse.
Ukadaulo umathandizira bwanji ma CD osinthika ogwirizana ndi chilengedwe
Poganizira ndondomeko zoteteza chilengedwe zomwe zimaperekedwa kunyumba ndi kunja, momwe mungathandizire kuteteza chilengedwe cha ma CD osinthika?
Choyamba, kuwonjezera pa zinthu zowonongeka ndi matekinoloje, opanga akunja adayikapo ndalama pakukulitsazobwezeretsanso pulasitiki ndi mapulasitiki opangidwa ndi bio-based ndi zinthu.Mwachitsanzo, Eastman waku United States adayika ndalama muukadaulo wobwezeretsanso poliyesitala, Toray waku Japan adalengeza za chitukuko cha nayiloni yochokera ku bio-N510, ndipo Suntory Group yaku Japan idalengeza mu Disembala 2021 kuti idapanga bwino botolo la PET la 100% lochokera ku bio. .
Kachiwiri, poyankha ndondomeko yapakhomo yoletsa pulasitiki yogwiritsira ntchito kamodzi, kuwonjezera padegradable zinthu PLA, China yaikanso ndalamapakupanga zinthu zosiyanasiyana zowonongeka monga PBAT, PBS ndi zipangizo zina ndi ntchito zake zogwirizana.Kodi mawonekedwe azinthu zosawonongeka angakwaniritse zosowa zamitundumitundu zamapaketi osinthika?
Kuchokera kuyerekeza zakuthupi pakati pa mafilimu a petrochemical ndi mafilimu owonongeka,zolepheretsa katundu wa zinthu zowonongeka akadali kutali ndi mafilimu achikhalidwe.Kuphatikiza apo, ngakhale zida zosiyanasiyana zotchinga zimatha kukutidwanso pazinthu zowonongeka, mtengo wazinthu zokutira ndi njira zidzakwera kwambiri, komanso kugwiritsa ntchito zinthu zowonongeka m'mapaketi ofewa, omwe ndi 2-3 mtengo wa filimu yoyambirira ya petrochemical. , zovuta kwambiri.Chifukwa chake, kugwiritsa ntchito zinthu zosawonongeka pamapaketi osinthika kumafunikanso kuyika ndalama pakufufuza ndi kupanga zida zopangira kuti zithetse mavuto azinthu zakuthupi ndi mtengo wake.
Kuyika kosinthika kumakhala ndi kuphatikiza kovutirapo kwazinthu zosiyanasiyana kuti zikwaniritse zofunikira za chinthucho kuti ziwonekere komanso magwiridwe antchito a phukusi.Magulu osavuta amitundu yosiyanasiyana yamafilimu kuphatikiza kusindikiza, magwiridwe antchito ndi kusindikiza kutentha, zida zomwe zimagwiritsidwa ntchito nthawi zambiri ndi OPP, PET, ONY, zojambulazo za aluminiyamu kapena zotayidwa, PE ndi PP kutentha kusindikiza zida, PVC ndi PETG kutentha shrinkable mafilimu ndi posachedwapa wotchuka MDOPE ndi BOPE.
Komabe, potengera chuma chozungulira chobwezeretsanso ndikugwiritsanso ntchito, mfundo zamapangidwe a CEFLEX ndi CGF pazachuma chozungulira chazonyamula zosinthika zimawoneka ngati njira imodzi yachitetezo cha chilengedwe chazonyamula zosinthika.
Choyamba, zida zambiri zosinthira ndi PP zakuthupi, monga kuyika pompopompo Zakudyazi BOPP/MCPP, kuphatikiza kwazinthu izi kumatha kukumana ndi chuma chimodzi chozungulira.
Chachiwiri,Pansi pazachuma, dongosolo lachitetezo cha chilengedwe la ma CD osinthika limatha kutsatiridwa potengera kapangidwe kazinthu kamodzi (PP & PE) popanda PET, de-nayiloni kapena zinthu zonse za polyolefin.Zinthu zokhala ndi bio kapena zotchingira zachilengedwe zikachuluka, zida za petrochemical ndi zolembera za aluminiyamu zimasinthidwa pang'onopang'ono kuti zitheke kupanga phukusi lofewa logwirizana ndi chilengedwe.
Pomaliza, potengera momwe chilengedwe chimakhalira komanso momwe zinthu ziliri, njira zomwe zingatetezere chilengedwe pakuyika zosinthika ndikupanga njira zosiyanasiyana zotetezera zachilengedwe kwa makasitomala osiyanasiyana ndi zosowa zosiyanasiyana zamapaketi azinthu, m'malo mwa yankho limodzi, monga chinthu chimodzi cha PE. , pulasitiki yowonongeka kapena pepala, yomwe ingagwiritsidwe ntchito pazinthu zosiyanasiyana zogwiritsira ntchito.Choncho, akulangizidwa kuti pamaziko a kukwaniritsa zofunikira zopangira katundu, zinthu ndi kapangidwe kake ziyenera kusinthidwa pang'onopang'ono ku ndondomeko yamakono yotetezera chilengedwe yomwe imakhala yotsika mtengo.Pamene makina obwezeretsanso ali abwino kwambiri, kukonzanso ndi kugwiritsiranso ntchito zolembera zosinthika ndi nkhani yeniyeni.
Nthawi yotumiza: Aug-26-2022