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    • 1. 发明申请
    • SYNTHETIC FIBER PLEATABLE FILTRATION MATERIAL AND FILTER
    • 合成纤维可过滤材料和过滤器
    • WO2007046919A2
    • 2007-04-26
    • PCT/US2006/029454
    • 2006-07-27
    • LYDALL, INC.GROSS, Stephen, EdwardSANDERS, Robert, G.
    • GROSS, Stephen, EdwardSANDERS, Robert, G.
    • B01D29/07
    • B01D39/1623B01D29/07B01D29/111B01D46/0001B01D46/10B01D46/521B01D2265/06B01D2275/10
    • A pleated filtration material (1) is provided with at least one filtration layer (2) and a stiffening layer (4). The method comprises preparing the filtration layer (2) as a non-woven layer of synthetic fibers, preparing the stiffening support layer (4) as a non-woven layer of synthetic fibers, with a majority of the fibers having an average denier at least two times the average denier of the synthetic fibers of the filtration layer (2) and sufficient in number and denier so that when attached to the filtration layer (2) produces a self-supporting composite (5), forming lines (7) of spaced apart perforations (6) in the support layer (4), attaching the perforated support layer (4) to the filtration layer (2) to form the composite (5) thereof, and pleating the composite filtration material (5) by folding the composite filtration material (5) along the lines (7) of the perforations (6) in the support layer (4).
    • 折叠过滤材料(1)设置有至少一个过滤层(2)和加强层(4)。 该方法包括制备作为合成纤维的无纺层的过滤层(2),制备作为合成纤维的无纺层的加强支撑层(4),其中绝大多数纤维的平均旦数至少为 是过滤层(2)的合成纤维的平均旦数的两倍,并且数量和旦数足够,使得当附着到过滤层(2)时产生自支撑复合材料(5),形成间隔开的管线(7) 在支撑层(4)中分开的穿孔(6),将穿孔的支撑层(4)附接到过滤层(2)以形成其复合材料(5),并且通过折叠复合材料 沿着支撑层(4)中的穿孔(6)的线(7)的过滤材料(5)。