Title:
METHOD AND APPARATUS FOR IMPROVING THE AIR FLOW THROUGH AN AIR DUCT IN A DRY FIBER WEB FORMING SYSTEM
Document Type and Number:
WIPO Patent Application WO1997022743
Kind Code:
A3
Abstract:
This invention relates to improved aerodynamics in dry fiber web forming machines and particularly to airlays which form high quality webs. The invention includes a disperser roll for feeding fibers into the air stream and a second roll opposite to the disperser roll for balancing the disruptive effects of long stationary walls and rotating members in the air duct. In one alternative arrangement of the invention, the fibers are also fed to the air stream by a second disperser roll opposite the first disperser roll.
Inventors:
FREUND KENNETH S
GILES ANDREW J
MCCOY TODD A
SOWELL LYLES H
STAPLES PHILLIP O
TUCKER LEONARD R
BAILEY JAMES STEPHEN
GILES ANDREW J
MCCOY TODD A
SOWELL LYLES H
STAPLES PHILLIP O
TUCKER LEONARD R
BAILEY JAMES STEPHEN
Application Number:
PCT/US1996/019358
Publication Date:
February 14, 2002
Filing Date:
December 05, 1996
Export Citation:
Assignee:
DU PONT (US)
International Classes:
D01G23/02; D01G25/00; D04H1/70; D04H1/72; (IPC1-7): D04H1/72
Domestic Patent References:
| WO1994002673A1 | 1994-02-03 |
Foreign References:
| EP0383616A1 | 1990-08-22 | |||
| US4701294A | 1987-10-20 | |||
| FR2292792A1 | 1976-06-25 | |||
| EP0378807A1 | 1990-07-25 | |||
| US3797074A | 1974-03-19 |
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