Cov ntaub qhwv yas yog siv dav hauv lub neej niaj hnub, feem ntau rau ntim thiab khaws cov zaub mov. Cov chav ua noj hauv tsev yog qhov chaw ntau tshaj plaws rau nws siv; Nws ua haujlwm los qhwv cov khoom xws li txiv hmab txiv ntoo, zaub, tais diav, thiab cov khoom seem, yog li txo qis rau huab cua thiab txo cov dej noo kom ntev cov khoom noj tshiab.
Thaum khaws cov zaub mov hauv lub tub yees, cov ntaub qhwv yas ua ib qho kev tiv thaiv. Kev ntim cov zaub mov pab tiv thaiv kev sib xyaw ntawm cov ntxhiab ntawm cov khoom sib txawv, kom tsis txhob muaj ntxhiab tsw hauv lub tub yees. Tsis tas li ntawd, nws tiv thaiv cov khoom noj los ntawm cov plua plav thiab cov kab mob sib kis, ua rau muaj kev nyiam huv ntau dua hauv tub yees.
Tshaj li kev siv tsev neeg, cov ntaub qhwv yas yog siv dav hauv kev lag luam khoom noj khoom haus, kev ua zaub mov, thiab cov khw muag khoom loj. Hauv kev lag luam khoom noj khoom haus, feem ntau yog siv los npog cov tais diav, khaws cia ib nrab - cov khoom xyaw npaj, thiab pob khoom noj khoom haus. Hauv kev ua zaub mov thiab khw muag khoom, nws pab tswj cov zaub mov zoo thaum txhim kho kev nyiam huv thiab khaws cia yooj yim.
Raws li kev ua neej hloov zuj zus, cov ntawv thov rau cov ntaub qhwv yas txuas ntxiv nthuav dav. Qee cov khoom lag luam muaj kev txhim kho kev ua haujlwm raws li cov kev xav tau tshwj xeeb, xws li kev txhim kho stretchability, superior sealing peev xwm, los yog tsim nyog rau qhov txias txias. Kev siv cov ntaub qhwv yas kom zoo tsis yog tsuas yog txhim kho kev txuag zaub mov tab sis kuj pab txo cov khoom noj khoom haus thiab ntxiv kev yooj yim rau lub neej txhua hnub.