Cov ntawv ntim yas feem ntau yog siv los tsim cov khob yas pov tseg, phaj, tais, tais diav, thawv thiab lwm yam khoom siv thermoforming, uas yog siv dav hauv ntim khoom noj, zaub, txiv hmab txiv ntoo, dej haus, khoom noj siv mis, khoom siv thiab lwm yam. Nws muaj qhov zoo ntawm softness, zoo pob tshab thiab yooj yim los ua rau hauv cov qauv nrov ntawm ntau yam duab. Piv nrog iav, nws tsis yooj yim tawg, lub teeb hauv qhov hnyav thiab yooj yim rau kev thauj mus los.