Sikuti ma pulasitiki onse ndi oipa kwa chilengedwe
Mawu oti "pulasitiki" ndi onyoza masiku ano monga momwe mawu oti "pepala" analili zaka 10 zapitazo, akutero purezidenti wa ProAmpac. Pulasitiki ilinso panjira yoteteza chilengedwe, malinga ndi kupanga zipangizo zopangira, ndiye kuti kuteteza chilengedwe kwa mapulasitiki kungagawidwe m'magulu awiri.mapulasitiki obwezerezedwanso, mapulasitiki osinthika, mapulasitiki odyedwa.
- Mapulasitiki obwezerezedwansoamatanthauza zipangizo zopangira pulasitiki zomwe zimapezekanso pambuyo pokonza zinyalala za pulasitiki kudzera mu njira yokonzekera, kusungunula granulation, kusintha ndi njira zina zakuthupi kapena zamankhwala, zomwe ndi kugwiritsanso ntchito mapulasitiki.
- Mapulasitiki owonongekandi mapulasitiki omwe amawonongeka mosavuta m'chilengedwe mwa kuwonjezera zowonjezera zina (monga starch, modified starch kapena cellulose ina, photosensitizers, biodegraders, ndi zina zotero) popanga, ndi kukhazikika kochepa.
- Mapulasitiki odyedwa, mtundu wa phukusi lodyedwa, mwachitsanzo, phukusi lomwe lingadyedwe, nthawi zambiri limapangidwa ndi wowuma, mapuloteni, polysaccharide, mafuta, ndi zinthu zophatikizika.
Kodi mapepala opakidwa ndi zinthu zoteteza chilengedwe ndi abwino kwambiri?
Kusintha matumba apulasitiki ndi matumba a mapepala kungatanthauze kuchuluka kwa kudula mitengo, zomwe zikanakhala kubwerera ku njira zakale zodula mitengo mopitirira muyeso. Kuwonjezera pa kudula mitengo mopitirira muyeso, kuipitsa mapepala n'kosavuta kunyalanyaza, kwenikweni, kuipitsa mapepala kungakhale kwakukulu kuposa kupanga pulasitiki.
Malinga ndi malipoti a atolankhani, kupanga mapepala kumagawidwa m'magawo awiri: kupukuta ndi kupanga mapepala, ndipo kuipitsa kumachokera makamaka ku njira yopukuta. Pakadali pano, mafakitale ambiri opanga mapepala amagwiritsa ntchito njira ya alkaline yopukuta, ndipo pa tani iliyonse ya madzi opangidwa, pafupifupi matani asanu ndi awiri a madzi akuda amatuluka, zomwe zimaipitsa kwambiri madzi.
Chitetezo chachikulu cha chilengedwe ndi kuchepetsa kugwiritsa ntchito kapena kugwiritsanso ntchito
Kupanga ndi kugwiritsa ntchito zinthu zomwe zingatayike ndi vuto lalikulu la kuipitsa chilengedwe, kukana kugwiritsanso ntchito zinthu zomwe sizingatayike, kugwiritsanso ntchito zinthu zomwe sizingatayike n'kothandiza pa chilengedwe. N'zoonekeratu kuti tonsefe tiyenera kuchitapo kanthu kuti tichepetse kuwononga chilengedwe. Kuchepetsa, kugwiritsanso ntchito zinthu zomwe sizingatayike, ndi kubwezeretsanso zinthu zomwe sizingatayike ndi njira zabwino zothandizira kuteteza chilengedwe masiku ano. Makampani opanga zodzoladzola akupitanso patsogolo kuyika zinthu zomwe zimachepetsa, kugwiritsanso ntchito zinthu zomwe sizingatayike, ndi kubwezeretsanso zinthu zomwe sizingatayike.
Nthawi yotumizira: Julayi-12-2023
