I-PET (i-Polyethylene Terephthalate) iyinto yepulasitiki esetshenziswa kabanzi embonini yokupakisha. Njengoba ulwazi lwezemvelo emhlabeni jikelele lukhula, amathuba emakethe yesikhathi esizayo kanye nomthelela wezemvelo wepulasitiki ye-PET kuthola ukunakwa okukhulu.
Isikhathi Esidlule Sezinto Eziphathekayo
Maphakathi nekhulu lama-20, i-polymer emangalisayo ye-PET, i-Polyethylene Terephthalate, yasungulwa okokuqala. Abasunguli bafuna izinto ezazingasetshenziswa ngezinjongo ezahlukene zezentengiselwano. Ukukhanya kwayo okulula, ukucaca kwayo, nokuqina kwayo kwenza kwaba ukukhetha okuhle kakhulu ekusetshenzisweni okubanzi. Ekuqaleni, i-PET yayisetshenziswa kakhulu embonini yezindwangu njengezinto zokusetshenziswa zemicu yokwenziwa (i-polyester). Ngokuhamba kwesikhathi, ukusetshenziswa kwe-PET kwanda kancane kancane emkhakheni wokupakisha, ikakhulukazi kuamabhodlela eziphuzo kanye nokupakishwa kokudla.
Ukufika kwamabhodlela e-PET ngawo-1970 kwaphawula ukwanda kwawo embonini yokupakisha.amabhodlela e-PET kanyeInkomishi yokuphuza yezilwane ezifuywayo, ngenxa yokukhanya kwazo okulula, amandla aphezulu, kanye nokubonakala okuhle, zashintsha ngokushesha amabhodlela engilazi namathini ensimbi, zaba yizinto ezikhethwayo zokupakisha iziphuzo. Ngokuthuthuka okuqhubekayo kwezobuchwepheshe bokukhiqiza, izindleko zezinto ze-PET zehla kancane kancane, okuthuthukisa ukusetshenziswa kwazo kabanzi emakethe yomhlaba wonke.
Ukukhuphuka kanye nezinzuzo ze-PET
Ukwanda okusheshayo kwezinto ze-PET kungenxa yezinzuzo zayo eziningi. Okokuqala, i-PET inezakhiwo ezinhle kakhulu zomzimba, njengamandla aphezulu, ukumelana nokuguguleka, kanye nokumelana nokugqwala kwamakhemikhali, okwenza isebenze kahle ekupakisheni nasemasimini ezimboni. Okwesibili, izinto ze-PET zinokukhanya okuhle nokukhazimula, okwenza kube nomphumela omuhle kakhulu wokubonakala ezisetshenziswayo njengamabhodlela eziphuzo nezitsha zokudla.
Ngaphezu kwalokho, ukuphindeka kabusha kwezinto ze-PET nakho kuyinzuzo enkulu. Amapulasitiki e-PET angaphindeka kabusha futhi asetshenziswe kabusha ngezindlela zomzimba noma zamakhemikhali ukukhiqiza izinto ze-PET (rPET) eziphinde zasetshenziswa. Izinto ze-rPET azikwazi nje kuphela ukusetshenziselwa ukukhiqiza amabhodlela amasha e-PET kodwa futhi zingasetshenziswa ezindwangu, ekwakheni, nakweminye imikhakha, okunciphisa kakhulu umthelela wemfucuza yepulasitiki emvelweni.
Umthelela Wezemvelo
Naphezu kwezinzuzo eziningi zezinto ze-PET, umthelela wazo emvelweni awunakunakwa. Inqubo yokukhiqizwa kwamapulasitiki e-PET idla inani elikhulu lemithombo kaphethiloli futhi ikhiqiza ukukhishwa kwegesi ebamba ukushisa. Ngaphezu kwalokho, izinga lokuwohloka kwamapulasitiki e-PET endaweni yemvelo lihamba kancane kakhulu, ngokuvamile lidinga amakhulu eminyaka, okwenza kube umthombo omkhulu wokungcola kwepulasitiki.
Kodwa-ke, uma kuqhathaniswa nezinye izinhlobo zepulasitiki, ukuphindeka kabusha kwe-PET kuyinika inzuzo ethile ekuvikelweni kwemvelo. Izibalo zibonisa ukuthi cishe ama-26% epulasitiki e-PET aphindeka kabusha emhlabeni jikelele, okuyisilinganiso esiphakeme kakhulu kunezinye izinto zepulasitiki. Ngokwandisa izinga lokuphinda kusetshenziswe kabusha kwamapulasitiki e-PET, umthelela wawo omubi emvelweni ungancishiswa ngempumelelo.
Umthelela Wezemvelo
Naphezu kwezinzuzo eziningi zezinto ze-PET, umthelela wazo emvelweni awunakunakwa. Inqubo yokukhiqizwa kwamapulasitiki e-PET idla inani elikhulu lemithombo kaphethiloli futhi ikhiqiza ukukhishwa kwegesi ebamba ukushisa. Ngaphezu kwalokho, izinga lokuwohloka kwamapulasitiki e-PET endaweni yemvelo lihamba kancane kakhulu, ngokuvamile lidinga amakhulu eminyaka, okwenza kube umthombo omkhulu wokungcola kwepulasitiki.
Kodwa-ke, uma kuqhathaniswa nezinye izinhlobo zepulasitiki, ukuphindeka kabusha kwe-PET kuyinika inzuzo ethile ekuvikelweni kwemvelo. Izibalo zibonisa ukuthi cishe ama-26% epulasitiki e-PET aphindeka kabusha emhlabeni jikelele, okuyisilinganiso esiphakeme kakhulu kunezinye izinto zepulasitiki. Ngokwandisa izinga lokuphinda kusetshenziswe kabusha kwamapulasitiki e-PET, umthelela wawo omubi emvelweni ungancishiswa ngempumelelo.
Umthelela Wezinkomishi Ezilahlwayo Ze-PET Emvelweni
Njengezinto ezivamile zokupakisha ukudla neziphuzo, umthelela wemvelo weIzinkomishi ze-PET ezilahlwayonakho kuyinto ekhathazayo. Nakuba izinkomishi zeziphuzo ze-PET kanye nezinkomishi zetiye zezithelo ze-PET zinezinzuzo ezifana nokuba lula, okusobala, nokujabulisa ubuhle, ukusetshenziswa kwazo kabanzi kanye nokulahlwa kwazo ngendlela engafanele kungaholela ezinkingeni ezinkulu zemvelo.
Izinga lokuwohloka kwezinkomishi ze-PET ezilahlwayo endaweni yemvelo lihamba kancane kakhulu. Uma zingaphinde zisetshenziswe, zingadala umonakalo wesikhathi eside ezindaweni zemvelo. Ngaphezu kwalokho, izinkomishi ze-PET ezilahlwayo zingadala izingozi ezithile zempilo ngesikhathi sokusetshenziswa, njengokukhishwa kwezinto eziyingozi ngaphansi kwezimo zokushisa okuphezulu. Ngakho-ke, ukukhuthaza ukuphinda kusetshenziswe kanye nokusetshenziswa kabusha kwezinkomishi ze-PET ezilahlwayo ukuze kuncishiswe umthelela wazo emvelweni kuyinkinga ephuthumayo okudingeka ixazululwe.
Ezinye Izicelo ze-PET Plastics
Ngaphandle kwamabhodlela eziphuzo kanye nokupakishwa kokudla, amapulasitiki e-PET asetshenziswa kabanzi kweminye imikhakha. Embonini yezindwangu, i-PET, njengezinto ezisetshenziswa kakhulu zemicu ye-polyester, isetshenziswa kakhulu ekukhiqizeni izingubo nezindwangu zasekhaya. Embonini yezimboni, amapulasitiki e-PET, ngenxa yezakhiwo zawo ezinhle kakhulu zomzimba, asetshenziswa ekukhiqizeni izingxenye ze-elekthronikhi nezingxenye zezimoto.
Ngaphezu kwalokho, izinto ze-PET zinezinhlelo ezithile emkhakheni wezokwelapha nowokwakha. Isibonelo, i-PET ingasetshenziswa ukukhiqiza amadivayisi ezokwelapha kanye nokupakishwa kwemithi ngenxa yokuhambisana kwayo kahle kwezinto eziphilayo kanye nokuphepha. Embonini yokwakha, izinto ze-PET zingasetshenziswa ukukhiqiza izinto zokuvikela ukushisa kanye nezinto zokuhlobisa, ezaziwa ngokuqina kwazo kanye nobungane bemvelo.
Imibuzo Evame Ukubuzwa MayelanaIzinkomishi ze-PET
1. Ingabe izinkomishi ze-PET ziphephile?
Izinkomishi ze-PET ziphephile ngaphansi kwezimo ezijwayelekile zokusetshenziswa futhi zihambisana nezindinganiso ezifanele zezinto zokuxhumana nokudla. Kodwa-ke, zingase zikhiphe inani elincane lezinto eziyingozi ngaphansi kwezimo zokushisa okuphezulu, ngakho-ke kunconywa ukugwema ukusebenzisa izinkomishi ze-PET ezindaweni zokushisa okuphezulu.
2. Ingabe izinkomishi ze-PET zingaphinde zisetshenziswe?
Izinkomishi ze-PET zingaphinde zisetshenziswe futhi zingacutshungulwa zibe izinto ze-PET eziphinde zasetshenziswa ngezindlela ezibonakalayo noma zamakhemikhali. Kodwa-ke, izinga langempela lokuphinda kusetshenziswe linqunyelwe ukuphelela kohlelo lokuphinda kusetshenziswe kanye nokuqwashisa abathengi.
3. Iyini ithonya lezindawo zokuphuza i-PET emvelweni?
Izinga lokuwohloka kwezinkomishi ze-PET endaweni yemvelo lihamba kancane, okungase kubangele imiphumela yesikhathi eside ezindaweni zemvelo. Ukwandisa izinga lokusebenzisa kabusha nokukhuthaza ukusetshenziswa kwezinto ze-PET ezisetshenzisiwe kuyizindlela ezisebenzayo zokunciphisa umthelela wazo emvelweni.
Ikusasa Lezinto Eziphathekayo
Ngokwanda kokuqwashisa ngemvelo emhlabeni jikelele kanye nokuthuthuka okuqhubekayo kwezobuchwepheshe, izinto ze-PET zizobhekana namathuba amasha okuthuthukiswa kanye nezinselele esikhathini esizayo. Ngakolunye uhlangothi, ngokuvuthwa okuqhubekayo kobuchwepheshe bokuvuselela, izinga lokuvuselela izinto ze-PET kulindeleke ukuthi lithuthuke kakhulu, ngaleyo ndlela kuncishiswe umthelela wazo omubi kwezemvelo. Ngakolunye uhlangothi, ucwaningo kanye nokusetshenziswa kwezinto ze-PET (Bio-PET) ezisekelwe ku-bio nazo ziyathuthuka, zinikeza iziqondiso ezintsha zokuthuthukiswa okusimeme kwezinto ze-PET.
Esikhathini esizayo,Izinkomishi zeziphuzo ze-PET, izinkomishi zetiye zezithelo ze-PET, kanye nezinkomishi ze-PET ezilahlwayo zizonaka kakhulu ukusebenza kwemvelo kanye nokuphepha kwezempilo, zikhuthaze intuthuko eqhubekayo. Ngaphansi kwesizinda sokuthuthukiswa okuluhlaza emhlabeni wonke, ikusasa lezinto ze-PET ligcwele ithemba kanye namathuba. Ngokusungula izinto ezintsha okuqhubekayo kanye nomzamo, kulindeleke ukuthi amapulasitiki e-PET athole ibhalansi phakathi kokuhlangabezana nesidingo semakethe yesikhathi esizayo kanye nokuvikelwa kwemvelo, abe yisibonelo sokupakisha okuluhlaza.
Ukuthuthukiswa kwamapulasitiki e-PET akumele kugxile kuphela ekudingweni kwemakethe kodwa futhi nasemtheleleni wemvelo. Ngokwandisa izinga lokuvuselela kabusha, ukukhuthaza ukusetshenziswa kwezinto ze-PET ezisetshenzisiwe, kanye nokuthuthukisa ucwaningo kanye nentuthuko ye-PET esekelwe ezintweni eziphilayo, amapulasitiki e-PET kulindeleke ukuthi athole ibhalansi entsha phakathi kwezidingo zemakethe zesikhathi esizayo kanye nokuvikelwa kwemvelo, okuhlangabezana nezidingo ezimbili.
I-MVIECOPACKingakunikeza noma yimuphi umkhiqizo owuthandayoukupakishwa kokudla kwe-cornstarchfuthiukupakishwa kwebhokisi lokudla komobanoma yiziphi izinkomishi zephepha ezingaphinde zisetshenziswe ozifunayo. Njengoba unesipiliyoni seminyaka eyi-12 sokuthumela kwamanye amazwe, i-MVIECOPACK isithumele emazweni angaphezu kwe-100. Ungasithinta noma nini ukuze wenze ngokwezifiso futhi uthole ama-oda athengiswa ngobuningi. Sizophendula zingakapheli amahora angama-24.
Isikhathi sokuthunyelwe: Julayi-19-2024
