Method and apparatus for sealing absorbent materials in an absorbent product
US5900109A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1993 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Dec 1, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1734
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for enveloping a series of absorbent cores with a fluid-permeable layer includes a first web supplying mechanism for providing a first layer of fluid-permeable material, and a depositing mechanism for positioning a series of absorbent cores on the first layer. Each of the absorbent cores defines a periphery thereof and includes superabsorbent material therein. A second web supplying means provides a second layer of fluid-permeable material to sandwich the absorbent cores between the first and second layers. A sealing mechanism secures the first layer to the second layer along an attachment region thereof which is located adjacent to at least a pair of side edge regions of the absorbent cores. The attachment region is constructed to substantially prevent movement of superabsorbent material from the absorbent cores through the attachment region. A separating mechanism removes selected regions of the first and second layers which are located adjacent to the attachment region and are spaced from the absorbent cores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.