Nta lawm
Non-woven fabric yog ib hom non-woven npuag, uas yog tsim los ntawm kev siv cov nplais siab-polymer, luv fibers lossis filament tsim fibers los ntawm cov cua ntws los yog cov neeg kho tshuab, uas yog tom qab siv cov dej kub qaub, koob, lossis kub dov, thiab thaum kawg tiav rau daim ntawv tsis-ntaub. Ib yam tshiab ntawm cov ntaub uas muaj qhov muag, mos mos thiab ua haujlwm saum npoo muaj qhov zoo ntawm tsis tsim cov txaj muag, muaj zog, ruaj khov, muaj xim thiab muag. Nws kuj muaj lub siab ntawm paj rwb. Muab piv rau paj rwb, lub hnab uas tsis yog-ntim yog ib qho yooj yim rau kev tsim thiab pheej yig tsim.
Nyob rau hauv cov nqe lus ntawm ib puag ncig tiv thaiv, raw cov ntaub ntawv ntawm feem ntau uas tsis yog-cov ntaub ntawv siv tam sim no siv yog polypropylene, thaum lub raw khoom ntawm hnab yas yog polyethylene. Txawm hais tias cov npe ntawm ob yam tshuaj yeeb yam zoo sib xws, lawv muaj kev sib txawv hauv cov qauv tshuaj. Cov tshuaj molecular qauv ntawm polyethylene yog ib qho ruaj khov thiab nyuaj rau degrade, yog li nws yuav siv 300 xyoo rau cov hnab yas kom decompose. Txawm li cas los xij vim, vim tsis muaj zog cov qauv ntawm polypropylene, molecular saw tau yooj yim zom, uas tuaj yeem ua rau degrade, thiab nkag mus rau ib puag ncig ib puag ncig hauv daim ntawv tsis muaj tshuaj lom. Ib lub hnab ntim khoom uas tsis yog-khaus muag tuaj yeem raug muab tshem tawm kom tsis pub dhau 90 hnub. Tsis tas li ntawd, lub hnab uas tsis yog-khom nqi yuav rov qab siv ntau tshaj 10 zaug, thiab qhov chaw pov tseg mus rau qhov chaw tom qab pov tseg tsuas yog 10% ntawm lub hnab yas