B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/110
B01D 46/00 (2006.01) B01D 39/16 (2006.01) B01D 39/20 (2006.01) B32B 17/00 (2006.01) D04H 13/00 (2006.01)
Patent
CA 1170026
ABSTRACT A felt-like layered composite of the following structure: a. a first layer of a predominantly horizontal coplanar superimposed layers of filamentary polytetrafluoro- ethylene components interrupted by occasional interlayered orientation; b. a thin high density nonwoven layer of fine glass staple fibers; c. a scrim fabric of polytetrafluoro- ethylene fibers and d. a second predominantly horizontal coplanar superimposed layers of filamentary polytetrafluoroethylene components interrupted by occasional interlayer orientation; wherein the layers are mechanically bonded together by filamentary polytetrafluoroethylene components extending vertically throughout the composite and a process for making this composite; the composite is useful as a filter fabric and is primarily used for bag filters to remove fly ash from the gaseous combustion products of coal fired furnaces and boilers.
392527
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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