Apparatus and method for depositing particulate material in a composite substrate
US5429788A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1994 |
| Grant date | Jul 4, 1995 |
| Priority date | — |
| Expiry date | Mar 28, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F13/15617
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus and method for forming a discrete layer of particulate material within a composite fibrous web includes a first forming chamber and a supplying mechanism for providing a flow of a selected fibrous material into the first forming chamber. A second forming chamber is selectively located within the first forming chamber to selectively divide the flow of fibrous material. A conveying mechanism transports a particulate material into the second forming chamber. A depositing mechanism is located within the second forming chamber to selectively dispense the particulate material. A foraminous forming layer is movably disposed within the first forming chamber and receives the fibrous material and the particulate material. As the foraminous forming layer moves, a first fibrous layer is formed on the foraminous forming layer, the particulate material is selectively deposited on the first fibrous layer, and a second fibrous layer is formed on the particulate material thereby providing the discrete layer of particulate material within the composite fibrous web. The depositing mechanism can be configured to dispense the particulate material in a selected pattern. The depositing mecha…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.