Akukho mehluko phakathi kweplastiki ye-PET ne-APET. I-PET yi-polyester, enegama lamakhemikhali le-polyethylene terephthalate. I-PET ingenziwa ngama-polymer aqondaniswe ngezindlela ezimbili eziyinhloko; i-amorphous noma i-crystalline. Cishe, konke ohlangana nakho kunama-amorphous ngokuhlukile okukodwa okukhulu; amathileyi wokudla ama-microwave okuthi, uma enziwe nge-PET, enziwe nge-C-PET (i-crystallized PET). Ngokuyinhloko yonke i-PET ecacile kufaka phakathi i-Mylar namabhodlela amanzi enziwe nge-A-PET (amorphous PET) futhi ezimweni eziningi, i- "A" imane ishiywe.

Uphawu lwe-Mobius loop kabusha lwe-polyester yi-PET nenombolo 1, ngakho-ke abantu abaningi babiza i-polyester njenge-PET. Abanye bakhetha ukucaciswa kakhudlwana, ngokukhombisa ukuthi ngabe i-polyester yi-crystalline C-PET, i-amorphous APET, i-RPET eyenziwe kabusha, noma i-glycol modified PETG. Lokhu ukwehluka okuncane, okuhloselwe ukunciphisa ukucutshungulwa kwe-polyester komkhiqizo wokugcina ohlosiwe, kungaba ngomjovo wokubumba, ukubumba igalelo, ukushisa ngomshini, noma ukukhipha kanye nokuqedela imisebenzi efana nokusika okufayo.

I-PETG iza nenani lentengo eliphakeme kakhulu futhi kulula ukufa ukusika kune-APET isebenzisa imishini ejwayelekile yokusika imishini. Ngasikhathi sinye, ibuye ithambe futhi iklwebhe kalula kakhulu kune-APET. Abaguquli abangenayo imishini efanele yokufa i-APET bavame ukusebenza ne-PETG ngenxa yokuthi i-PETG ithambile futhi iklwebheka kulula, ngakho-ke imvamisa ifihliwe (lokhu kuyimbozo elimboze elincane le- “Saran wrap”). Lokhu ukufihla ubuso kudinga ukususwa ohlangothini olulodwa ngesikhathi sokuphrinta, kepha ukufihla imvamisa kuvame ukusala ngakolunye uhlangothi ngesikhathi sokusikwa kokufa ukuvimbela ukunwaya. Kuthatha isikhathi esiningi ngakho-ke kuyabiza kakhulu ukukhipha imaskhi ye-poly, ikakhulukazi uma uphrinta amashidi amaningi.

Imibukiso eminingi yamaphuzu wokuthengisa yenziwe ngePETG, ngoba imvamisa iyisikali esindayo futhi kunzima ukusika. Esinye isizathu ukuthi ukufihla poly kungashiywa kuvikelwe isibonisi ngesikhathi sokuphathwa nokuthumela bese kususwa lapho isibonisi sisethwa. Lesi yisona sizathu esikhulu esenza abaklami abaningi bacacise ngokuzenzakalela i-PETG yokuboniswa kwendawo yokuthengisa ngaphandle kokuqonda ukuthi i-APET noma i-PETG iyona nto efaneleke kakhulu ekusetshenzisweni kokuphela okuhlosiwe noma ukucubungula (ukuphrinta, ukusika okokufa, ukunamathisela, njll.). I-APET ngokuvamile itholakala kuze kufike ku-0.030 ″ ubukhulu, kanti i-PETG imvamisa iqala ku-0.020 ″.

Kunokwehluka okucashile phakathi kwePETG neAPET, futhi uma ungazazi izinzuzo futhi uhlehlela emuva ngokuthi yenziwa kanjani iPET, ukukhumbula igama kuyadida, kepha kuphephile ukusho ukuthi konke okungenhla kubhekise ku-polyester futhi, ngokombono wokusebenzisa kabusha, zonke ziphathwa ngokufanayo.