Particulate addition method and apparatus
US6709613B2 · kind B2 · utility
5Cited by
37References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2001 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Jul 27, 2022 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/72
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A nonwoven web contains an even distribution of its composite materials by the separate application of particulate material such as superabsorbent particles into a forming head outside the air stream for deposition of thermoplastic fibers in the forming head. The thermoplastic fibers are distributed by air entertainment through tubular forming screens having rotary distribution members therein. The particulate absorbents are generally placed in the forming box by distribution units which may have metering devices and outlet chutes extending into the forming head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.