Title:
LAMINATE PRODUCT, PULSE JET FILTER BAG, AND METHODS FOR MANUFACTURING
Document Type and Number:
WIPO Patent Application WO2000002639
Kind Code:
A3
Abstract:
A laminate product is provided. The laminate product includes a first layer of porous expanded polytetrafluoroethylene membrane, and a second layer of woven fabric of polytetrafluoroethylene containing yarn. The membrane preferably has an air permeability of at least 0.31 m (0.01 cfm/ft<2>) 124.5 Pa at (0.5 inch water gauge), and a thickness of greater than about 12.7 mu (0.5 mil). The woven fabric preferably has a weight of between 531 g/m<2> (15 ospy) and about 1023 g/m<2> (30 opsy). The laminate product can be sewn to provide a filter bag for use in pulse jet filter applications.
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Inventors:
GRIFFIN JAMES W
Application Number:
PCT/US1999/015477
Publication Date:
April 20, 2000
Filing Date:
July 08, 1999
Export Citation:
Assignee:
DONALDSON CO INC (US)
International Classes:
B01D39/16; B32B27/30; (IPC1-7): B01D69/10; B01D71/36; B32B27/12; B01D39/08
Domestic Patent References:
WO1993005960A1 | 1993-04-01 | |||
WO1989007346A1 | 1989-08-10 |
Foreign References:
EP0391660A2 | 1990-10-10 |
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