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用于过滤器的无纺层和过滤介质
Nonwoven layer for a filter and filter medium
US-8080076-B2用于真空吸尘器袋等过滤器,提高过滤效率。
专利摘要
本发明涉及一种用于过滤器(特别是真空吸尘器袋)的无纺层,其中无纺层的至少一个区域(该区域具有预定厚度和预定面积)的平均孔径小于50μm,并且包括纤维,这些纤维被粘合在一起,使得纤维在平行于层表面的方向上相对运动受到抑制。本发明还涉及一种过滤介质,特别是用于真空吸尘器袋,包括过滤结构,其中过滤结构的表面或界面设置有过滤纸层,该过滤纸层的表面积小于过滤结构。
Original abstractThe invention is directed to a nonwoven layer for a filter, in particular, for a vacuum cleaner bag, wherein at least one region of the nonwoven layer, the region having a predetermined thickness and a predetermined area, has an average pore size smaller than 50 μm and comprises fibers being bonded together such that a movement of the fibers relative to each other in a direction parallel to the surface of the layer is inhibited. The invention is further directed to a filter medium, in particular, for a vacuum cleaner bag, comprising a filter structure wherein a surface or an interface of the filter structure is provided with a filter paper layer having a smaller surface area than the filter structure.
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