Nsalu ya poliyesitala imakhala ndi mphamvu zambiri komanso mphamvu yochira, motero imakhala yolimba komanso yolimba, yosagwirizana ndi makwinya komanso yopanda chitsulo.
Nsalu ya polyester imakhala ndi hygroscopicity yochepa, yomwe imapangitsa kuti ikhale yotentha komanso yotentha m'chilimwe. Panthawi imodzimodziyo, n'zosavuta kunyamula magetsi osasunthika m'nyengo yozizira, zomwe zimakhudza chitonthozo. Komabe, n'zosavuta kuti ziume pambuyo kutsuka, ndi chonyowa mphamvu nkomwe amachepetsa ndipo alibe deform. Ili ndi kuchapa bwino komanso kuvala.
Polyester ndiye nsalu yabwino kwambiri yosamva kutentha munsalu zopanga. Ndi thermoplastic ndipo imatha kupangidwa kukhala masiketi okhala ndi utoto wautali.
Nsalu ya poliyesitala imakhala yabwino kukana kuwala. Kuphatikiza pa kukhala woipa kuposa ulusi wa acrylic, kukana kwake kuwala kuli bwino kuposa nsalu zachilengedwe za ulusi. Makamaka kuseri kwa galasi, kukana kwa dzuwa ndikwabwino kwambiri, pafupifupi kofanana ndi ulusi wa acrylic.
Nsalu ya polyester imakhala ndi kukana kwamankhwala abwino. Acid ndi alkali siziwononga pang'ono. Panthawi imodzimodziyo, saopa nkhungu ndi njenjete.