Makapu a mapepala ndi zinthu zomwe anthu ambiri amagwiritsa ntchito akatha kugwiritsa ntchito. Pakadali pano, zinthu zomwe zimagwiritsidwa ntchito popanga makapu a mapepala ndi monga mapepala okhala ndi PE, mapepala okhala ndi PLA ndi mapepala opanda pulasitiki. kapu ya pepala zopangira ali ndi ubwino ndi kuipa kwake pankhani yoteteza chilengedwe, kuwonongeka, komanso ndalama zopangira.
1. Ubwino wa pepala lokutidwa ndi PE
Pepala lokutidwa ndi PE ndi chinthu chopangira makapu a pepala okutidwa ndi filimu ya polyethylene pamwamba pa pepalalo. Ubwino wake ndi wakuti limateteza madzi bwino, zomwe zimathandiza kuti madzi asalowe bwino, kotero kuti chikho cha pepalacho sichimatuluka mosavuta pamlingo winawake.
Kuphatikiza apo, mtengo wopangira wa Mpukutu wa pepala wokutidwa ndi PE ndi yotsika, ndipo ukadaulo wokonza zinthu ndi wosavuta, zomwe zimapangitsa kuti ikhale yotsika mtengo, yoyenera kupanga ndi kugwiritsa ntchito zinthu zazikulu.
Zoyipa
Popeza PE ndi pulasitiki, kugwiritsa ntchito makapu a pepala okhala ndi PE kudzawonjezera kupanga zinyalala za pulasitiki ndikubweretsa vuto pa chilengedwe.
Chifukwa cha kuphatikiza filimu ya PE ndi mapepala, kubwezeretsa ndi kubwezeretsanso makapu a mapepala kumakhala kovuta, ndipo kutaya kosayenera kungayambitse kuipitsa chilengedwe.
2. Ubwino wa pepala lokhala ndi PLA
Pepala lokutidwa ndi PLA limakutidwa ndi filimu ya polylactic acid (PLA) pamwamba pa pepalalo. PLA ndi pulasitiki yowola yomwe imapangidwa kuchokera ku zinthu zopangira zomera, zomwe zimakhala zoteteza chilengedwe kuposa zinthu zapulasitiki zachikhalidwe. Makapu a pepala atayidwa, amatha kuwola kukhala zinthu zopanda poizoni komanso zopanda vuto atakonzedwa bwino, zomwe zimakhala zabwino kwa chilengedwe.
PLA imapangidwa kuchokera ku zinthu zongowonjezedwanso monga starch ya zomera ndipo sidalira kwambiri zinthu za petrochemical, zomwe zimathandiza kuchepetsa kufunikira kwa zinthu zosangowonjezedwanso.
Zoyipa
Chifukwa cha kuchepetsa njira zopangira ndi mtengo wa zinthu zopangira, pepala lokutidwa ndi PLA ndi lokwera mtengo ndipo mtengo wamsika ndi wokwera, kotero siliyenera kupanga zinthu zazikulu komanso zotsika mtengo.
Kuwonongeka kwa PLA kumafuna kutentha ndi chinyezi. Ngati zinyalala sizikukonzedwa bwino, ubwino wake wa chilengedwe udzachepa.
3. Ubwino wa pepala lopanda pulasitiki
Pepala lopanda pulasitiki limatanthauza zinthu zopangira makapu a pepala popanda kuwonjezera pulasitiki. Ubwino wake ndi wakuti ndi loteteza chilengedwe, lotha kuwonongeka, ndipo siliwononga chilengedwe.
Nthawi yomweyo, pepala lopanda pulasitiki limagwiritsa ntchito ukadaulo wapadera wosalowa madzi kuti likhale ndi magwiridwe antchito ena osalowa madzi, omwe angakwaniritse zosowa za tsiku ndi tsiku.
Zoyipa
Poyerekeza ndi pepala lokhala ndi PE ndi pepala lokhala ndi PLA, pepala lopanda pulasitiki silikhala ndi mphamvu yolowera bwino, ndipo mavuto otuluka amatha kuchitika likagwiritsidwa ntchito kapena kusiyidwa kwa nthawi yayitali.
Pakadali pano, ukadaulo wopanga mapepala okhala ndi zokutira zopanda pulasitiki ukadali mu gawo lopanga, njira yopangira ndi yovuta kwambiri, ndipo mtengo wopangira ndi wokwera kwambiri, zomwe zimapangitsa kuti mtengo wake ukhale wokwera kwambiri, zomwe sizoyenera kukwezedwa ndikugwiritsidwa ntchito kwakukulu.
Zipangizo zosiyanasiyana zopangira makapu a pepala zili ndi ubwino ndi kuipa kwake. Posankha zipangizo zopangira makapu a pepala, makhalidwe a zipangizo zosiyanasiyana ndi zosowa zenizeni ziyenera kuganiziridwa mokwanira, kuti pakhale chitetezo cha chilengedwe ndi ubwino wachuma, ndikuyesetsa kuchepetsa zotsatira zake pa chilengedwe. Nthawi yomweyo, kupita patsogolo kosalekeza ndi zatsopano za sayansi ndi ukadaulo zidzabweretsanso zipangizo zabwino zopangira makapu a pepala, zomwe zikugwirizana kwambiri ndi lingaliro la chitukuko chokhazikika.
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Nthawi yotumizira: Julayi-29-2023
