[Back to the Laser Patent Collection]
United States Patent 5,817,271
Congleton, et. al. Oct. 6, 1998

Altering the surfaces of functional absorbent materials for use in absorbent articles

Abstract

The method relates to functional absorbent materials that are profiled through cutting and heating to form flow channels, and in one embodiment to form bellows which rise above the flow channels. Additionally, the flow channels which are partially cut into an absorbent material may also function as hinge means for that material as regards bending and conformity of fit. In one embodiment, functional absorbent material is provided with discrete heating and cutting, e.g., by a laser, by which channels and bellows are simultaneously formed. In another embodiment using a discrete heating and cutting means, e.g., a laser, is used to provide channels partially through the surface of a functional absorbent material.


Inventors: Congleton; Stephen D. (The Procter & Gamble Company, Winton Hill Technical Center 6100 Center Hill Ave., Cincinnati, OH 45224); Aouad; Yousef G. (The Procter & Gamble Company, Winton Hill Technical Center 6100 Center Hill Ave., Cincinnati, OH 45224); Dragoo; Jerry L. (The Procter & Gamble Company, Winton Hill Technical Center 6100 Center Hill Ave., Cincinnati, OH 45224); Walsh; Bradley E. (The Procter & Gamble Company, Winton Hill Technical Center 6100 Center Hill Ave., Cincinnati, OH 45224).
Appl. No.: 769,460
Filed: Dec. 18, 1996
Intl. Cl. : B29C 59/02, B29C 59/16, B23K 26/00
Current U.S. Cl.: 264/400; 219/121.68; 264/138; 264/293; 264/482; 425/174.4
Field of Search: 264/400, 482, 1.37, 138, 293; 219/121.68, 121.69, 121.66; 425/174.4

References Cited | [Referenced By]

U.S. Patent Documents
3,790,744Feb., 1974Bowen 264/482
3,881,490May, 1975Whitehead et al.
4,307,046Dec., 1981Neefe 264/1.37
4,795,452Jan., 1989Blaney et al.
4,840,692Jun., 1989Kamstrup-Larsen
5,300,053Apr., 1994Genaro
5,441,836Aug., 1995Balz et al. 264/1.37
5,536,264Jul., 1996Hsueh et al.

Primary Examiner: Vargot; Mathieu D.
Attorney, Agent or Firm: Cummings; Theodore P., Miller; Steven W., Rasser; Jacobus C.

19 Claims, 9 Drawing Figures

Back to Cordula Seitz.