| United States Patent | 5,817,271 |
| Congleton, et. al. | Oct. 6, 1998 |
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 |
| 3,790,744 | Feb., 1974 | Bowen | 264/482 |
| 3,881,490 | May, 1975 | Whitehead et al. | |
| 4,307,046 | Dec., 1981 | Neefe | 264/1.37 |
| 4,795,452 | Jan., 1989 | Blaney et al. | |
| 4,840,692 | Jun., 1989 | Kamstrup-Larsen | |
| 5,300,053 | Apr., 1994 | Genaro | |
| 5,441,836 | Aug., 1995 | Balz et al. | 264/1.37 |
| 5,536,264 | Jul., 1996 | Hsueh et al. |
Primary Examiner: Vargot; Mathieu D.
Attorney, Agent or Firm: Cummings; Theodore P., Miller; Steven W., Rasser; Jacobus C.