Ntim sau los ntawm tag nrho cov khoom lag luam sib txuas los ntawm cov khoom siv raw, kev yuav khoom, kev tsim khoom, muag thiab siv, thiab cuam tshuam nrog tib neeg lub neej. Nrog kev siv tas li ntawm txoj cai tiv thaiv ib puag ncig thiab kev txhim kho ntawm cov neeg siv khoom lub hom phiaj tiv thaiv ib puag ncig, tsis muaj kuab paug "ntim ntsuab" tau txais kev saib xyuas ntau ntxiv. Cov khoom yas, tshwj xeeb tshaj yog ua npuas polystyrene (EPS), muaj qhov zoo hauv tus nqi qis thiab ua tau zoo, thiab tau siv dav hauv ntim ntim. Nws yuav rhuav tshem ib puag ncig thiab ua rau "ua pa phem".

Cov khoom lag luam pulp yog cov khoom siv fiber ntau lossis qib thib ob uas yog cov khoom siv tseem ceeb, thiab cov dej tau qhuav thiab tsim los ntawm cov pwm tshwj xeeb, thiab tom qab ntawd qhuav thiab ua ke kom tau txais ib hom khoom ntim. Nws yog ib qho yooj yim kom tau txais cov ntaub ntawv raw, tsis muaj kuab paug hauv cov txheej txheem tsim khoom, cov khoom lag luam muaj qhov zoo hauv kev tiv thaiv seismic, tiv thaiv, ua pa thiab ua haujlwm zoo li qub. Nws kuj tseem rov ua dua tshiab thiab yooj yim rau kev puas tsuaj, yog li nws muaj kev thov dav hauv kev ntim khoom ntawm kev lag luam hluav taws xob, kev lag luam tshuaj niaj hnub, tshiab thiab ntxiv rau.