Izinkomishi zephepha ezimbozwe nge-PE kanye ne-PLA ziyizinto ezimbili ezivamile zendebe yephepha ezisemakethe njengamanje. Zinomehluko omkhulu maqondana nokuvikelwa kwemvelo, ukuphinda kusetshenziswe kanye nokusimama. Lesi sihloko sizohlukaniswa sibe yizigaba eziyisithupha ukuze kuxoxwe ngezici kanye nomehluko walezi zinhlobo ezimbili zezinkomishi zephepha ukuze kuboniswe umthelela wazo ekusimameni kwemvelo.
Izinkomishi zephepha ezimbozwe nge-PE (polyethylene) kanye ne-PLA (polylactic acid) ziyizinto ezimbili ezivamile zendebe yephepha. Izinkomishi zephepha ezimbozwe nge-PE zenziwe ngepulasitiki yendabuko ye-PE, kanti izinkomishi zephepha ezimbozwe nge-PLA zenziwe ngezinto zezitshalo ezivuselelekayo i-PLA. Lesi sihloko sihlose ukuqhathanisa umehluko ekuvikelweni kwemvelo, ukuphinda kusetshenziswe kanye nokusimama phakathi kwalezi zinhlobo ezimbili zeizinkomishi zephephaukusiza abantu benze izinqumo ezingcono mayelana nokusebenzisa izinkomishi zephepha.
1. Ukuqhathaniswa kokuvikelwa kwemvelo. Ngokuphathelene nokuvikelwa kwemvelo, izinkomishi zephepha ezimbozwe yi-PLA zingcono nakakhulu. I-PLA, njenge-bioplastic, yenziwe ngezinto zokusetshenziswa zezitshalo. Uma kuqhathaniswa, izinkomishi zephepha ezimbozwe yi-PE zidinga izinsiza zikaphethiloli njengezinto zokusetshenziswa, okunomthelela omkhulu emvelweni. Ukusebenzisa izinkomishi zephepha ezimbozwe yi-PLA kusiza ukunciphisa ukuncika emandleni asendulo nokuvikela imvelo.
Ukuqhathanisa ngokwezinto ezingasetshenziswa kabusha. Ngokwezinto ezingasetshenziswa kabusha,Izinkomishi zephepha ezimbozwe yi-PLAZingcono futhi kunezinkomishi zephepha ezimbozwe yi-PE. Njengoba i-PLA iyinto ebolayo, izinkomishi zephepha ze-PLA zingaphinde zisetshenziswe futhi zicutshungulwe zibe izinkomishi zephepha ze-PLA ezintsha noma eminye imikhiqizo ye-bioplastic. Izinkomishi zephepha ezimbozwe yi-PE zidinga ukudlula ezinqubweni zokuhlunga nezokuhlanza zobungcweti ngaphambi kokuba ziphinde zisetshenziswe. Ngakho-ke, izinkomishi zephepha ezimbozwe yi-PLA kulula ukuziphinda futhi uzisebenzise, ngokuvumelana nomqondo womnotho ojikelezayo.
3. Ukuqhathanisa ngokwemigomo yokusimama. Uma kukhulunywa ngokusimama, izinkomishi zephepha ezimbozwe yi-PLA nazo zinamandla. Inqubo yokukhiqiza ye-PLA isebenzisa izinsiza ezivuselelekayo, njenge-cornstarch nezinye izinto zezitshalo, ngakho-ke ayinawo umthelela omkhulu emvelweni. Ukukhiqizwa kwe-PE kuncike ezinsizeni zephethiloli ezilinganiselwe, okubeka ingcindezi enkulu emvelweni. Ngaphezu kwalokho, izinkomishi zephepha ezimbozwe yi-PLA zingawohloka zibe amanzi kanye ne-carbon dioxide, okubangela ukungcola okuncane enhlabathini nasemanzini, futhi zisimame kakhulu.
Izinto okufanele uzicabangele ezihlobene nokusetshenziswa kwangempela. Ngokombono wokusetshenziswa kwangempela, kukhona nomehluko phakathi kwezinkomishi zephepha ezimbozwe nge-PE kanye nezinkomishi zephepha ezimbozwe nge-PLA.Izinkomishi zephepha ezimbozwe nge-PEZiyakwazi ukumelana nokushisa nokubanda futhi zilungele ukupakisha iziphuzo ezishisayo nezibandayo. Kodwa-ke, izinto ze-PLA zizwela kakhulu ekushiseni futhi azifanele ukugcina uketshezi olushisa kakhulu, okungabangela kalula ukuthi indebe ithambe futhi iguquguquke. Ngakho-ke, izidingo ezithile zokusetshenziswa kudingeka zicatshangelwe lapho ukhetha izinkomishi zephepha.
Ngamafuphi, kunomehluko osobala phakathi kwezinkomishi zephepha ezimbozwe nge-PE kanye nezinkomishi zephepha ezimbozwe nge-PLA maqondana nokuvikelwa kwemvelo, ukuphinde kusetshenziswe kanye nokusimama. Izinkomishi zephepha ezimbozwe nge-PLA zinokuvikelwa kwemvelo okungcono,ukuphinde kusetshenziswe kabusha kanye nokusimama, futhi okwamanje kuyindlela enconyelwa kakhulu enobungani nemvelo. Nakuba ukumelana nokushisa kwezinkomishi zephepha ezimbozwe yi-PLA kungekuhle njengokwezinkomishi zephepha ezimbozwe yi-PE, izinzuzo zazo zidlula kakhulu izinkinga. Kufanele sikhuthaze abantu ukuthi basebenzise izinkomishi zephepha ezimbozwe yi-PLA ukukhuthaza intuthuko esimeme. Lapho kukhethwa izinkomishi zephepha, kufanele kucatshangelwe ngokuningiliziwe ngokusekelwe ezidingweni ezithile, kanye nokusetshenziswa kweizinkomishi zephepha ezinobungani nemvelo futhi eziqhubekayokufanele isekelwe ngenkuthalo. Ngokusebenzisana, singenza ukusetshenziswa kwendebe yephepha kube nobungane kakhulu nemvelo, kuphinde kusetshenziswe futhi kuqhubeke isikhathi eside.
Isikhathi sokuthunyelwe: Septhemba 13-2023
