Muaj ntau ntau hom kev phais kab xev cais raws li cov khoom siv ntawm uas daim kab xev nws tus kheej yog constituted thiab cov yam ntxwv ntawm cov ntawv nplaum, uas yuav tsum yog hypoallergenic .
Cov hom feem ntau muaj xws li daim kab xev tsis yooj yim (xws li ntawv, uas kua muag tau yooj yim) lossis kua muag-tiv taus (feem ntau cov ntaub lossis yas) thiab qee qhov no kuj tuaj yeem ua dej lossis ua pa lossis ob qho dej-resistant thiab ib feem-ntxeem tau, tso cai rau qee qhov tsuas pub hla cua thiab noo noo. Cov ntaub qhwv yuav tsum muaj cov nplaum uas tsim nyog, ua tsis taus pa thiab tib lub sijhawm impermeable, yooj yim tshem tawm tsis ua rau daim tawv nqaij tawv, tiv taus huab cua, laus thiab hnub ci hluav taws xob. Daim kab xev phais rau kev siv kho mob yog ua raws li qhov yuav tsum tau ua hauv cov qauv thoob ntiaj teb xws li ASTM International ASTM PSTC / 6 tus qauv.
Thaum ntxov ntawm lub xyoo pua 21st cov kev xaiv ntau tshaj plaws ntawm cov viav vias phais npog muag muag suav nrog:
txawm yog yob los yog txiav ua ntej thiab ib tus zuj zus
pob tshab, dawb lossis "tawv nqaij" xim (txawm hais tias xim yog tom qab ntawd ua tsis zoo rau cov tawv nqaij tshwj xeeb, tshwj xeeb uas tsis yog European),
txhav lossis nthuav dav / ywj pheej, tso cai txhim kho qhov hnav khaub ncaws hauv qhov chaw lossis lwm qhov chaw flex ntawm cov pob txha pob txha,
dej tsis haum lossis nqus dej.
