Water reduction by modulating vacuum
US8801902B1 · kind B1 · utility
0Cited by
20References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2013 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Sep 18, 2033 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21J1/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A system and a method for dewatering an acoustical tile basemat comprising a continuously traveling wire, a device for depositing a dilute water slurry of solids including fiber and binder on the wire, a vacuum box below the wire for separating water from the solids deposited on the wire to form a basemat, a vacuum source, and a valve for cyclically connecting the vacuum source to the vacuum box at a cyclic rate that limits vacuum exposure to a length of the basemat newly arriving at the vacuum box to less than four inches per cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.