Kutsimikizira mtundu wa PET (chingwe cha poliyesitala) musanavomereze kumalepheretsa kulephera kwa katundu wokwera mtengo komanso kusokonezeka kwa magwiridwe antchito. Bukuli lili ndi masitepe otsimikizira kuphatikiza kuyesa kwamphamvu, kuyeza kulondola kwazithunzi, kuyang'ana pamwamba, ndikuwunikanso zolemba. Malinga ndi mafotokozedwe a ASTM D3950, kutsimikizika kwamtundu kuyenera kutsimikizira kulimba kwamphamvu, kutalika, ndi kulolerana kwamitundu. Kutsatira njira yotsimikizira yokhazikika kumathandiza akatswiri ogula zinthu kuwonetsetsa kuti zingwe zolandilidwa zikukwaniritsa zofunikira.
Chingwe cha PET (chingwe cha poliyesitala) ndichosankha chomwe chimasankhidwa paulendo wautali chifukwa cha kusungidwa kwake kwakukulu. Sayansi yomwe imayambitsa ntchitoyi ili mu kapangidwe ka polyester ndi mphamvu zake zobwezeretsa. Mosiyana ndi chitsulo, chomwe chimataya mphamvu katundu atakhazikika, kapena PP, yomwe imatha kupumula pansi pa kupsinjika maganizo, PET imasunga kupanikizika kosalekeza paulendo wonse. Nkhaniyi ikuyang'ana za sayansi ya kusungika kwamphamvu, kuphatikizira momwe mamolekyu amayang'ana, kubwezeretsanso kutalika, ndi kutentha kumakhudzira chitetezo cha katundu paulendo wautali.
Kusankha pakati pa chingwe cha PET (chingwe cha poliyesitala) ndi chingwe chachitsulo ndi chimodzi mwazosankha zofunika kwambiri pakuyika mafakitale. Chingwe cha PET chimapereka ndalama zokwana 50% paphazi lililonse, chimachotsa ziwopsezo zovulala kuchokera m'mbali zakuthwa ndi snap-back, ndipo chimapereka kusungika kwamphamvu kwambiri pamene katundu amakhazikika paulendo. Zomangira zitsulo zimapereka kukhwima kwakukulu kwa katundu wochuluka koma zimakhala ndi ndalama zobisika kuphatikizapo zofunikira zogwirira ntchito, kuopsa kwa dzimbiri, ndi kuvala kwa zipangizo. Malinga ndi deta yamakampani, lamba la PET limapereka kuwirikiza kanayi mizere yofananira pa tani iliyonse poyerekeza ndi chitsulo, kusintha mtengo wa equation.
Kuthyola mphamvu ndi elongation ndi zinthu ziwiri zofunika kwambiri zamakina a PET lamba (chingwe cha polyester). Kuthyola mphamvu kumapangitsa kuti chingwecho chitetezeke, pamene kutambasula kumatanthawuza momwe chingwecho chimakhalira pansi pa katundu-kaya chimasunga kupsinjika kapena kutambasula mopitirira muyeso. Malinga ndi mafotokozedwe a ASTM D3950, zinthu zonse ziwiri ziyenera kuyesedwa ndikutsimikiziridwa kuti zitsimikizire kuti zikuyenda bwino. Bukuli likufotokoza zomwe katunduyu akutanthauza, momwe amalumikizirana, ndi momwe angagwiritsire ntchito posankha lamba loyenera la PET pakugwiritsa ntchito kwanu.