在非织造布这个行业里，我们经常见到的无纺布有许多种，过滤材料用无纺布就是常用的一种，它的特点是过滤性好，吸收性强，可以根据材质的不同特性，使用在不同场合。
In the nonwovens industry, there are many kinds of nonwovens that we often see. The nonwovens used as filter materials are the common ones. Its characteristics are good filtration and strong absorption. It can be used in different occasions according to different characteristics of materials.
汽车中需要过滤材料的地方很多，如化油器空气过滤，空调循环过滤，车厢空气净化，曲轴箱通风阀过滤，发动机油过滤，变速箱油过滤，辅助水过滤等。 目前，开发和应用于上述过滤目的的许多介质是无纺布或无纺布复合材料。 例如，空调系统的循环过滤系统采用驻极体熔喷非织造布和主动放电复合材料。 化油器空气过滤材料由化学粘合无纺布或针刺/纺粘织物复合材料经干法组成。 传动油过滤器采用针刺无纺布等。
There are many places in the car that need filter materials, such as carburetor air filtration, air conditioning circulation filtration, car air purification, crankcase ventilation valve filtration, engine oil filtration, gearbox oil filtration, auxiliary water filtration, etc. At present, many media developed and applied for the above filtering purposes are non-woven or non-woven composite materials. For example, the circulating filtration system of air conditioning system adopts electret melt blown nonwovens and active discharge composite materials. The carburetor air filter material is composed of chemical bonded non-woven fabric or needle / spunbond fabric composite material by dry method. The transmission oil filter adopts needle punched non-woven fabric, etc.