Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Bulk deposition of particles by differential fluid pressure
Patent
1988-07-01
1990-02-27
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Bulk deposition of particles by differential fluid pressure
264518, 264113, 264116, 425 801, 425 811, D04H 116
Patent
active
049044400
ABSTRACT:
Apparatus for and methods of forming airlaid fibrous webs having a multiplicity of layers and/or discrete particles of absorbent gelling material dispersed through at least a portion of the web. The apparatus is of the type which includes a laydown drum having a foraminous forming element, a primary vacuum chamber, and a dusting layer vacuum chamber; a primary hood; and a dusting layer hood. The dusting layer of fibers formed on the laydown drum acts to block the passage of particles or fibers entrained in a first fiber stream which is airlaid over the dusting layer so as to minimize equipment plugging problems and the loss of particles or fibers through the foraminous forming element. The primary vacuum chamber of the laydown drum preferably spans the primary hood and a portion of the dusting layer hood so that the dusting layer is not sheared off, damaged, or destroyed as the laydown drum rotates to the position where the first fiber stream is deposited over the dusting layer.
REFERENCES:
patent: 351872 (1970-07-01), Banks
patent: 1950765 (1934-03-01), Winter
patent: 2086757 (1929-04-01), Williams
patent: 2236472 (1941-03-01), Freydberg et al.
patent: 2693619 (1954-11-01), Goss
patent: 2993239 (1961-07-01), Heritage
patent: 3086253 (1963-04-01), Joa
patent: 3518726 (1970-07-01), Banks
patent: 3596805 (1971-08-01), Farmery
patent: 3598805 (1971-08-01), Farmery
patent: 3863296 (1975-02-01), Buell
patent: 3895089 (1975-07-01), Goyal
patent: 3939240 (1976-02-01), Savich
patent: 3943605 (1976-03-01), Nystrand
patent: 3961397 (1976-06-01), Neuenschwander
patent: 3973291 (1976-08-01), Kolbach
patent: 3978257 (1976-08-01), Ring
patent: 3984898 (1976-10-01), Matsummura et al.
patent: 3994047 (1976-11-01), Lee et al.
patent: 4004323 (1977-01-01), Gotchel et al.
patent: 4016628 (1977-04-01), Kolbach
patent: 4074959 (1978-02-01), Curry et al.
patent: 4141772 (1979-02-01), Buell
patent: 4340556 (1982-07-01), Ciencewicki
patent: 4388056 (1983-06-01), Lee et al.
patent: 4540454 (1985-09-01), Pieniak et al.
patent: 4592708 (1986-06-01), Feist et al.
patent: 4604313 (1986-08-01), McFarland et al.
patent: 4610678 (1986-09-01), Weisman et al.
patent: 4640810 (1987-02-01), Laursen et al.
patent: 4650479 (1987-03-01), Insley
patent: 4655757 (1987-04-01), McFarland et al.
patent: 4666647 (1987-05-01), Enloe et al.
Braun Fredrick H.
Fertig Mary Lynn
Miller Steven W.
Pollaro John M.
Silbaugh Jan H.
LandOfFree
Apparatus for and methods of airlaying fibrous webs having discr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for and methods of airlaying fibrous webs having discr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for and methods of airlaying fibrous webs having discr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-172513