Cov Thawv Membrane yog tsim ua cov nyias nyias, muaj peev xwm rub tau yooj yim thiab cov yas zom zaws yas, ob qho tib si nyob rau sab saum toj thiab hauv qab kawg ntawm lub thawv, uas, thaum kaw, tsim snugly nyob ib ncig ntawm cov khoom tau khaws cia, yog li tuav nws ruaj ntseg hauv qhov chaw. Lub thawv ntawv yog ua los ntawm cov ntshiab polystyrene.
Cov thawv rau ob sab no sawv cev rau txoj kev zoo tshaj plaws los thauj cov feem ntau tawg thiab muag ntawm cov qauv thiab cov khoom. Peb siv lawv rau lub thauj ntawm peb tus kheej qee zaum kuj yooj yim siv lead ua. Ntau tus neeg siv khoom hauv kev lag luam hluav taws xob siv cov thawv no rau khaws cia thiab thauj cov khoom me me ntawm silicon. seb cov khoom puas ncig, taw tes, tsw-puab lossis ntawm ntau qhov sib txawv, daim nyias nyias lub thawv ntawv ntim tau ruaj khov thiab tiv thaiv cov khoom tsis tsuas yog los ntawm kev puas tsuaj cov tshuab, tab sis kuj tseem muaj cov ntawv sib txawv ntawm kev puas tsuaj vim los ntawm ntau yam xws li oxidation. Vim tias lub siab kho qhov muag siab ntawm daim nyias nyias lub thawv ntim, ib tus tuaj yeem ua rau kev kuaj xyuas thiab kuaj pom tsis muaj qhov qhib.