Pleated poly (tetra-fluoro ethylene) filter medium and support

Details Pleated poly (tetra-fluoro ethylene) filter medium and support Pleated poly (tetra-fluoro ethylene) filter medium and support

B - Operations, Transporting

01

D

B01D 27/06 (2006.01) B01D 29/11 (2006.01) B01D 39/16 (2006.01) B01D 63/06 (2006.01) B01D 69/10 (2006.01) B01D 71/36 (2006.01)

Patent

CA 2108901

-16- Abstract of the Disclosure A pleated, all poly(tetra-fluoro ethylene) filter element (20) incorporating a poly(tetra-fluoro ethylene) filter membrane (24) is shown and described. The membrane is supported by an all poly(tetra-fluoro ethylene) paper (26) and (28), which permits filtrate to pass through the paper and across the poly(tetra-fluoro ethylene) membrane. A sandwich is formed by placing a layer of poly(tetra- fluoro ethylene) filter membrane (24) between the two layers of poly(tetra-fluoro ethylene) support paper, (26) and (28), and the sandwich is then pleated prior to assembly around a core (14) and between end caps (12) and (18), which are bonded to the poly(tetra-fluoro ethylene) paper and poly(tetra-fluoro ethylene) filter membrane by a hot-melt process.

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