Cov kev qhia tshwj xeeb ntawm cov yas qhwv feem ntau npog cov khoom siv, thickness, tensile zog, pob tshab, kub tsis kam, thiab kev nyab xeeb kev ua haujlwm. Cov ntaub qhwv yas feem ntau yog tsim los ntawm cov ntaub ntawv xws li polyethylene (PE) thiab polyvinyl chloride (PVC); Ntawm cov no, PE qhwv yog siv dav rau kev ntim khoom hauv tsev vim nws txoj kev nyab xeeb zoo dua, yoog raws, thiab ntau yam. Cov ntaub qhwv ua los ntawm cov khoom sib txawv sib txawv raws li lub zog, adhesion, thiab kub tsis kam.
Lub thickness ntawm cov txheej txheem hauv tsev yas qhwv feem ntau yog li ntawm 8 txog 20 microns. Thickness ncaj qha cuam tshuam rau kev tsim kua muag thiab tuav cov yam ntxwv: cov ntaub qhwv nyias nyias muab kev yooj yim dua thiab kev ncab, ua rau lawv tsim nyog rau qhwv cov khoom noj txhua hnub, thaum cov ntaub qhwv tuab dua muab cov kav ntev dua thiab zoo dua rau cov ntim uas xav tau kev tiv thaiv zoo.
Cov ntaub qhwv yas yuav tsum muaj lub cev zoo, nrog rau kev ncab siab, tsim nyog adhesion, thiab siab pob tshab. Zoo stretchability tso cai rau cov ntaub qhwv kom nruj rau cov khoom noj los yog ntim ntawm ntau yam duab, yog li txo cov huab cua raug; siab pob tshab ua rau nws yooj yim los saib xyuas cov khoom noj yam tsis tas yuav qhib lub pob, uas tuaj yeem cuam tshuam qhov tshiab.
Qhov kub thiab txias tsis kam thiab kev nyab xeeb ntawm cov zaub mov kuj tseem yog qhov tseem ceeb ntawm kev ntsuas. Cov khoom ua raws cai yuav tsum nyob ruaj khov nyob rau hauv lawv qhov ntsuas qhov kub thiab txias yam tsis muaj kev cuam tshuam loj lossis cuam tshuam rau kev nyab xeeb ntawm zaub mov. Tsis tas li ntawd, cov khoom lag luam yuav tsum ua tau raws li cov qauv tsim nyog rau zaub mov-cov ntaub ntawv tiv tauj thiab tswj hwm kev tsiv teb tsaws ntawm cov tshuaj phem kom ntseeg tau tias cov neeg siv khoom muaj kev nyab xeeb thaum siv.