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    • 3. 发明授权
    • Dust filter bag including a highly porous backing material ply
    • 防尘过滤袋包括高度多孔的背衬材料层
    • US06706086B2
    • 2004-03-16
    • US09978888
    • 2001-10-16
    • Dietmar EmigErnst RaabeAlbrecht Klimmek
    • Dietmar EmigErnst RaabeAlbrecht Klimmek
    • B03C311
    • A47L9/14B01D39/163B01D39/18B01D39/2024Y10S55/02Y10S55/05Y10S55/19
    • A dust filter bag having a highly porous backing material ply and a method for producing the dust filter bag. The dust filter bag includes at least one filter material ply and at least one backing material ply, the backing material ply possessing an air permeability of at least 900 l/m2 x s, a burst strength of at least 70 kPa, a rupture strength longitudinally better than 10 and transversely better than 3 N, a flexural rigidity longitudinally better than 0.5 cN cm2 and transversely better than 0.25 cN cm2, a basis weight of 30-80 g/m2 and a droplet sink-in time of less than 10 minimum. The dust filter bag can be produced by the following steps: mixing fibers including cellulose fibers and fusible fibers into a homogenous fiber mix, processing the fiber mix into a fiber web by wet laying, drying the fiber web, curing the dried fiber web by thermofusion into a backing material ply, processing the backing material ply with a filter material ply into a raw bag, and finishing the raw bag into a dust filter bag.
    • 一种具有高度多孔背衬材料层的防尘过滤袋及其制造方法。 防尘过滤袋包括至少一个过滤材料层和至少一个背衬材料层,背衬材料层具有至少900l / m 2 xs的透气度,至少70kPa的破裂强度,破裂强度 强度纵向优于10,横向好于3N,弯曲刚度纵向优于0.5cN cm 2,横向优于0.25cN cm 2,基重为30-80g / m 2, 液滴沉入时间小于10。 可以通过以下步骤生产除尘过滤袋:将纤维素纤维和易熔纤维的纤维混合到均匀的纤维混合物中,通过湿法加工将纤维混合物加工成纤维网,干燥纤维网,通过热熔融固化干燥的纤维网 加入背衬材料层中,用过滤材料层将背衬材料层加工成生袋,并将原料袋整理成防尘过滤袋。