Okokuqala, i UMichelin akafuni ukwenza amathayi kuphela ngepulasitiki egaywe kabusha. Ipulasitiki, futhi kuleli cala elithile, ukusetshenziswa kwe-PET (i-polyethylene terephthalate), i-polymer ye-thermoplastic esetshenziswa kakhulu kulezi zinsuku (kusuka ezingutsheni kuya emabhodleleni amanzi neziphuzo ezibandayo), ingenye nje yezithako eziningi ezakha isondo - ngaphezulu kwe-200 ngokusho kukaMichelin.
Ngokuvamile sithi ithayi lenziwe ngenjoloba, kodwa empeleni alinjalo impela. Isondo awenziwanga nje kuphela ngenjoloba yemvelo, kodwa futhi irabha yokwenziwa, insimbi, izinto zendwangu (zokwenziwa), ama-polymer ahlukahlukene, ikhabhoni, izithasiselo, njll.
Ingxube yemikhiqizo, okungeyona yonke ekwazi ukugaywa kabusha kalula noma isebenziseke kabusha, yenza umthelela wemvelo wamasondo uphakame - futhi ngesikhathi sokusetshenziswa kwawo - okuholela i-Michelin ukufeza umgomo wokuba namathayi asimeme angu-100% ngo-2050 (ingxenye yomjikelezo wezomnotho), okungukuthi kusetshenziswa izinto ezivuselelekayo nezigaywe kabusha kuphela ekukhiqizweni kwayo, okuhloswe ngakho okumaphakathi okungama-40% wezinto ezisetshenziswa emathayini ayo okusimama ngo-2030.
i-PET egaywe kabusha
I-PET isivele isetshenziswa namuhla ngabakwaMichelin nabanye abakhiqizi be-fiber ekukhiqizeni amathayi, ngesilinganiso samathani ayizinkulungwane ezingu-800 ngonyaka (ingqikithi yomkhakha), okulingana namathayi ayizigidi eziyizinkulungwane ezingu-1.6 akhiqizwa.
Kodwa-ke, ukugaywa kabusha kwe-PET, naphezu kokuthi kungenzeka ngezindlela ze-thermomechanical, kubangele okokusebenza okugaywe kabusha okungaqinisekisi izakhiwo ezifanayo ne-virgin PET, ngakho ayizange iphinde ingene ochungechungeni lokukhiqiza amathayi. Kungalesi sikhathi lapho kuthathwe khona isinyathelo esibalulekile ekufezeni isondo elisimeme futhi yilapho iCarbios ingena khona.
I-Carbios iyingqalabutho yezixazululo ze-bioindustrial efuna ukusungula kabusha umjikelezo wempilo wama-polymer epulasitiki nezindwangu. Ukwenza kanjalo, isebenzisa ubuchwepheshe bokugaywa kabusha kwe-enzymatic be-PET plastic waste. Ukuhlolwa okwenziwe nguMichelin kwenze kwaba nokwenzeka ukuqinisekisa i-PET egaywe kabusha yeCarbios, ezovumela ukusetshenziswa kwayo ekukhiqizeni amathayi.
Inqubo ye-Carbios isebenzisa i-enzyme ekwazi ukukhulula i-PET (equkethwe emabhodleleni, amathreyi, izingubo ze-polyester), ibole ibe yi-monomers yayo (izakhi eziphindaphindiwe ku-polymer) okuthi ngemva kokudlula kuyo futhi inqubo ye-polymerization ivumela imikhiqizo. ukuze zenziwe nge-100% egaywe kabusha kanye ne-100% ye-PET plastic egaywa kabusha enekhwalithi efanayo njengokuthi ikhiqizwe nge-virgin PET - ngokusho kweCarbios, izinqubo zayo zivumela ukugaywa kabusha okungapheli.
Ngamanye amazwi, i-PET yeCarbio egaywe kabusha, eyahlolwa uMichelin, yathola izimfanelo zokuqina ezifanayo ezidingekayo ekukhiqizeni amathayi ayo.
Intuthuko engagcini nje ngokuvumela i-Michelin ukuthi ifinyelele ngokushesha umgomo wayo wokukhiqiza amathayi asimeme, kodwa futhi izovumela ukunciphisa ukukhiqizwa kwe-PET, esekelwe ku-petroleum (njengawo wonke amapulasitiki) - ngokwezibalo zikaMichelin, ukugaywa kabusha kwezigidigidi ezintathu. Amabhodlela e-PET akuvumela ukuthi uthole yonke imicu oyidingayo.