US005248524A
United States Patent [19] [11] Patent Number: 5,248,524
Soderlund [45] Date of Patent: Sep. 28, 1993
U.S. Patent Sep. 28,1993 sheet 1 of 4 5,248,524
[54] METHOD AND APPARATUS FOR ZONED APPLICATION OF PARTICLES IN FIBROUS MATERIAL WITH DUAL DISPENSING NOZZLES
[75] Inventor: J. Donald Soderlund, Bellevue, Wash.
[73] Assignee: Paragon Trade Brands, Federal Way, Wash.
[21] Appl. No.: 825,930
[22] Filed: Jan. 27,1992
[51] Int. C1.5 B05D 1/14
[52] U.S. CI 427/200; 427/197;
427/202; 427/206; 118/308; 118/310; 118/314
[58] Field of Search 427/180. 200, 206, 202,
427/197; 118/308, 310, 314; 239/551
[56] References Cited
U.S. PATENT DOCUMENTS
2.242,182 5/1941 McCann 118/308
2.577.205 12/1951 Meyer et al 154/101
2.905.569 9/1959 Zitke 118/308
3.536.580 10/1970 La Fave 118/308
3.670.731 6/1972 Harmon 128/284
4.087.506 5/1978 Cook et al 264/112
4.333,463 6/1982 Holtman 128/287
4.381,783 5/1983 Elias 604/368
4.543.274 9/1985 Mulder 427/197
4,551,191 11/1985 Kock et al 156/276
4,600.603 7/1986 Mulder 118/308
4,685,915 8/1987 Hasse et al 604/378
4,699,823 10/1987 Kellenberger et al 428/219
4,770,344 9/1988 Kaiser 239/8
4,800,101 1/1990 Takada 427/197
4,924.803 5/1990 Celant 118/630
4,927,346 5/1990 Kaiser et al 118/308
4,927,582 5/1990 Bryson 264/113
5,009,650 4/1991 Bernardin 604/378
5,017,324 5/1991 Kaiser et al 264/510
5,028,224 7/1991 Pieper et al 264/113
Primary Examiner—Shrive Beck
Assistant Examiner—Katherine A. Bareford
Attorney, Agent, or Firm—Dressier, Goldsmith, Shore,
Sutker & Milnamow, Ltd.
[57] ABSTRACT
An apparatus and method for effecting zoned deposition of superabsorbent particles in a fibrous web includes the use of dual dispensing nozzles for forming selected deposition patterns. Fluidized streams of the superabsorbent particles are formed, with rotary valve assemblies employed for creating pulsed flow to each of the dispensing nozzles. The length, width, and relative positioning of the deposition patterns can be selectively varied in accordance with desired performance characteristics.
10 Claims, 4 Drawing Sheets
