Patent ID: 9144759
Filing Date: 2015-09-29
Classification: B01D,Y10T

Abstract:
1. A fluid filter media comprising: a first media layer; a second media layer; a filter layer disposed between the first media layer and the second media layer; and a plurality of spaced apart weld points that couple the first media layer, the filter layer, and the second media layer together to form the fluid filter media, the fluid filter media having a first surface and a second surface opposite the first surface, wherein: all of the weld points distort the surface of the first media layer and the second media layer such that each weld point includes an inward depression of the first surface that is aligned with an inward depression of the second surface wherein each weld point and depression forms a dimple on the first and second media layers; the fluid filter media is folded back on itself to form a plurality of pleats, wherein each pleat includes a surface that faces a corresponding surface of an adjacent pleat; the inward depressions of the first and second surfaces permit fluid flow through the fluid filter media when one or more pleats collapse via contact between facing surfaces of adjacent pleats; and the fluid filter media does not include a pleat separator between facing surfaces of adjacent pleats to prevent the pleats from collapsing.