Foam-based manufacturing system and process
US11932988B2 · kind B2 · utility
1Cited by
23References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2020 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | Dec 30, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/72
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A system comprising a pulper configured to (i) accept surfactant, a liquid and fiber stock and (ii) generate a foam that suspends the fiber stock, wherein the foam has a half-life; a headbox configured to receive the foam-suspended fiber stock from the pulper and displace the foam-suspended fiber stock onto a forming wire, wherein a time it takes the foam-suspended fiber stock to move from the pulper to the headbox is less than the half-life; and a foam return device that removes at least some of the foam from the forming wire and returns the at least some of the foam to the pulper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.