熔喷无纺布，在非织造布大家族里，算做小弟弟。量小，技术相对封闭。近几年，空净市场火起来的时候，作为滤材主力——熔喷无纺布火了起来。这个相对封闭的领域，格局也在悄悄发生变化。
Melt blown non-woven fabric, in the large family of nonwovens, is regarded as a little brother. Small quantity, relatively closed technology. In recent years, when the air purification market is booming, as the main filter material, melt blown non-woven fabric is booming. In this relatively closed field, the pattern is quietly changing.
作为滤材，熔喷布的优势在于施加静电，从而增加了静电吸附的功能，这种吸附过滤可以增加过滤效率，而不增加阻力。
As the filter material, the advantage of melt blown cloth is to apply static electricity, thus increasing the function of electrostatic adsorption. This kind of adsorption filtration can increase the filtration efficiency without increasing the resistance.
这类熔喷布，基材都是聚丙烯，这种聚丙烯是一种均聚的高分子材料。由于聚丙烯导电性特别差，所以成为良好的驻极材料。
This kind of melt blown cloth is based on polypropylene, which is a kind of homopolymer material. Polypropylene is a good electret material because of its poor conductivity.
驻极，“极”指电荷，“驻”指施加。
Electret, "pole" refers to electric charge, "electret" refers to application.