Piv nrog rau cov khoom siv lim dej dav dav, koob punched lim muaj qhov zoo hauv qab no:
1. Cov porosity loj thiab zoo huab cua permeability, uas tuaj yeem txhim kho lub peev xwm ntawm cov khoom siv thiab txo qhov poob siab thiab kev siv zog.Koob-punched lim xav yog ib qho zoo luv fiber ntau lim ntaub nrog staggered kev npaj thiab cov pore faib, thiab cov porosity tuaj yeem ncav cuag ntau dua 70%, uas yog ob npaug ntawm cov ntaub lim dej.Siv rab koob-punched fabrics li lim hnab tuaj yeem txo qhov loj ntawm baghouses thiab txo qis zog noj.
2. Kev tshem tawm cov plua plav siab siab thiab tsis tshua muaj roj emission concentration.
3. Qhov saum npoo yog tiav los ntawm kub dov, singeing los yog txheej, qhov saum npoo yog tiaj thiab du, tsis yooj yim los thaiv, tsis yooj yim deform, yooj yim los ntxuav, thiab muaj kev pab cuam lub neej ntev.Kev pabcuam lub neej ntawm koob xav yog feem ntau 1 txog 5 npaug ntawm cov ntaub lim ntaub.
4. Muaj zog chemical stability.Tsis tsuas yog tuaj yeem lim qhov kub ib txwm lossis cov roj kub kub, tab sis kuj tuaj yeem lim cov roj ntsha uas muaj kua qaub thiab alkali.