Polyester, mwasayansi yotchedwa polyethylene terephthalate (PET), ndi imodzi mwazitsulo zogwiritsidwa ntchito kwambiri padziko lonse lapansi. Kuchita kwake bwino kwambiri komanso mtengo wake-zothandiza zapangitsa kuti ikhale maziko ofunikira pamakampani opanga nsalu. M'zaka zaposachedwa, ndi kupititsa patsogolo kwaumisiri komanso kulimbikitsa njira zowononga chilengedwe, nsalu za polyester zapitiriza kusonyeza mpikisano wamphamvu pamsika wapadziko lonse.
Kutengera momwe amagwirira ntchito, zabwino zake za nsalu za polyester zili pakulimba kwake komanso kulimba kwake. Kapangidwe kake ka mamolekyu ophatikizika kamakhala kolimba kwambiri ndi 30%-50% kuposa thonje, komanso kumapangitsa kuti asakhumudwe kwambiri, zomwe zimapangitsa kuti zikhale zoyenera-zovala, katundu, ndi nsalu zamakampani. Kuphatikiza apo, poliyesitala imawonetsa kukhazikika bwino kwambiri, yokhala ndi positi-kutsika kwamafuta osakwana 1%, kupangitsa kuti ikhale yoyenera-zovala zomwe zimafunikira kukwanira bwino. Mwanjira yake, posintha, poliyesitala imatha kupangidwa kuti ikhale ya UV-yosamva, madzi{11}} ndi madontho-yosamva, ndi yachangu{13}}yowuma, yotsekera chinyezi, kupangitsa kuti igwiritsidwe ntchito kwambiri muzovala zamasewera ndi zakunja.
Ubwino winanso waukulu wampikisano wa poliyesitala ndi mtengo wake-kayendetsedwe kabwino ndi mawonekedwe ake osawononga chilengedwe. Wopangidwa kuchokera ku petrochemical byproduct, poliyesitala imakhala ndi gwero lokhazikika lazinthu zopangira ndipo imagwiritsa ntchito mphamvu zochepa kupanga kuposa ulusi wachilengedwe. M'zaka zaposachedwa, makampaniwa achepetsa kwambiri mpweya wotulutsa mpweya potembenuza mabotolo apulasitiki omwe amagwiritsidwa ntchito kukhala ulusi kudzera muukadaulo wa "polyester". Kuphatikiza apo, kupanga -zopangidwa ndi polyester kupititsa patsogolo mafashoni okhazikika. Zatsopanozi zapatsa polyester malo ofunikira pamsika wapadziko lonse lapansi, pomwe mafashoni achangu komanso chitetezo cha chilengedwe ndizofunikanso.
Nsalu za polyester zikukumana ndi chizolowezi chamitundu yosiyanasiyana pamagwiritsidwe awo. Pazovala, poliyesitala-zosakaniza za thonje (monga 65% poliyesitala/35% thonje) zimapereka kuuma komanso kutonthoza, zomwe zimalamulira msika wamavalidwe okhazikika, monga malaya ndi ma suti. Polyester yoyera imagwiritsidwa ntchito makamaka muzovala zowoneka bwino, monga T-malaya amasewera ndi zosambira. Mu nsalu zapakhomo, poliyesitala amagwiritsidwa ntchito kwambiri pa makatani ndi pansalu za sofa, ndipo katundu wake wa makwinya-wosamva makwinya{10}opanda makwinya{10}amafunidwa kwambiri ndi makampani a hotelo. M'gawo la mafakitale, ulusi wa poliyesitala umagwiritsidwa ntchito -zigawo zamphamvu kwambiri monga zingwe zamatayala ndi malamba, kusonyeza kudalirika kwa uinjiniya{13}.
Pakadali pano, dziko la China, lomwe ndi dziko lalikulu kwambiri padziko lonse lapansi lopanga poliyesitala, limapanga zoposa 70% za mphamvu zopangira padziko lonse lapansi ndipo mosalekeza limakulitsa mtengo wowonjezera wazinthu zake kudzera muukadaulo waukadaulo. Pamene ogula padziko lonse akufuna kuti{2}}awoneke bwino, nsalu zokhazikika zikukula, nsalu za polyester zikuphatikizanso msika wawo kudzera muukadaulo. Kwa akatswiri azamalonda akunja, kumvetsetsa mozama za mawonekedwe a polyester ndi momwe amagwirira ntchito pamakampani kudzawathandiza kumvetsetsa bwino mwayi wamabizinesi wazinthu zazikuluzikuluzi.
