Hollow board (tseem hu ua corrugated yas ntawv, ntxaib- phab ntsa ntawv, los yog cov ntawv fluted) yog lub teeb yuag (vim nws cov qauv hollow), tsis yog - lom, muaj kuab paug- dawb, tsis muaj dej, poob siab- tiv taus, laus- tiv taus, thiab corrosion- cov ntaub ntawv muaj nyob hauv ntau yam xim.
Muab piv rau cov duab los qhia-raws li cov khoom, hollow board muaj qhov zoo xws li ya raws thiab corrosion kuj.
Piv nrog rau kev txhaj tshuaj- cov khoom molded, hollow board muaj cov txiaj ntsig suav nrog kev poob siab, kev tsim qauv yooj yim, thiab tshem tawm qhov xav tau rau cov pwm txhaj tshuaj kim. Tsis tas li ntawd, los ntawm kev tswj cov khoom siv raw- xws li los ntawm kev hloov pauv hloov pauv ntawm kev tiv thaiv - zoo li qub lossis cov khoom siv hluav taws xob zoo- cov neeg tsim khoom tuaj yeem tsim cov laug cam nrog cov khoom siv tshwj xeeb lossis cov khoom tiv thaiv zoo li qub; qhov kev tiv thaiv saum npoo ntawm kev tiv thaiv- cov khoom zoo li qub tuaj yeem tswj tau nyob rau hauv $ 10^6$ txog $ 10^{11}$ ohm ntau yam, thaum cov khoom siv hluav taws xob tuaj yeem tswj tau hauv $ 10^3$ txog $ 10^5$ ohm ntau yam.
