Hauv kev lag luam tsheb thauj mus los, cov hnab ntim khoom feem ntau siv los thauj qee cov khoom siv hmoov. Vim tias cov khoom siv hmoov av tau yooj yim kom xau thiab tsa cov plua plav, kev siv cov hnab ntim khoom tuaj yeem muab kaw kom zoo, kom tsis txhob muaj cov pa phem thiab plua plav. Thaum siv cov hnab ntim khoom, ua tib zoo saib xyuas cov hnab ntim khoom kom tsis txhob muaj kev laus.
1. Thaum siv ton hnab los thauj lossis khaws cov khoom, nws yog ib qho tsim nyog kom tsis txhob raug tshav ntuj ntev. Tsuas yog nyob rau hauv txoj kev no tuaj yeem lav qhov kev pabcuam lub neej ntawm lub hnab tuj.
2. Muaj teeb meem nrog kev tiv thaiv dej tsis zoo thiab tsis muaj dej pov thawj thaum siv lub hnab ntim. Lub hnab ntim yuav tsum tau qhuav tam sim ntawd tom qab siv;
3. Thaum lub sij hawm siv, cov tshuaj acidic yuav tsum raug tiv thaiv los ntawm kev tiv thaiv lub hnab ntim, thiab thaum thauj cov khoom acidic, cov khoom acidic yuav tsum tau ntim zoo.
4. Tsis txhob tso lub hnab ntim rau hauv qhov chaw raug tshav ntuj, vim tias qhov ntev ntawm lub hnub ci yuav ua rau lub hnab ntim khoom puas. Hnub ci muaj ultraviolet rays thiab ultraviolet rays yuav ncaj qha oxidize cov khoom polypropylene;