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SPUNBOND NONWOVENS FOR FILTRATION APPLICATIONS

机译:用于过滤应用的纺粘非织造布

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摘要

The processes for manufacturing non-woven fabric can be grouped into four general technology bases: textile, paper, extrusion and hybrid/composite. The textile technology base forms textile fibers into selectively-oriented webs in the dry state, and fabrics produced by this method are commonly referred to as drylaid nonwovens. The paper technology base includes drylaid pulp and wetlaid systems, each manufactured using synthetic fibers and woodpulp which are suspended in either air (for drylaid) or water (for wetlaid). The extrusion technology base forms a sheet structure by extruding molten polymer through a die or spinneret and laying filaments onto a moving belt. The hybrid technology base marries two or more fabric substrates using at lease one nonwoven web formation technology. A good example of a hybrid sheet is SMS which represents a composite of spunbond/melt-blown/spunbond web structures.
机译:无纺布的生产过程可分为四个通用技术基础:纺织,造纸,挤出和混合/复合材料。纺织技术基础将纺织纤维在干燥状态下形成为选择性定向的纤网,通过这种方法生产的织物通常称为干法无纺布。造纸技术基础包括干法纸浆和湿法纸浆系统,每种均使用合成纤维和木浆制造,它们悬浮在空气(用于干法纸浆)或水(用于湿法纸浆)中。挤出技术的基础是通过将熔融的聚合物通过模具或喷丝头挤出并将细丝铺设到移动的皮带上而形成片状结构。混合技术基础至少使用一种非织造纤维网形成技术来嫁接两个或多个织物基材。混合片材的一个很好的例子是SMS,它代表了纺粘/熔喷/纺粘纤维网结构的复合材料。

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