Drying section of a papermaking machine comprising one or more through air drying cylinders
US11136717B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2018 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Nov 19, 2038 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F11/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a drying section and comprises one or more through air drying cylinders 3, 5 and a permeable fabric 9 that runs in a loop and wraps part of the circumference of each through air drying cylinder. The loop of the fabric 9 is divided in a web-carrying part 10 and a conditioning part 11. The web-carrying part extends from a receiving point 12 to a transfer point 15 where a fibrous web is transferred to a further component. The conditioning part extends from the transfer point 15 to the receiving point 12. The conditioning part has a cleaning section 19 comprising a shower 20 to wash residue from the fabric. A dewatering section 21 is arranged to act on the fabric 9 after the cleaning section and comprises one or several suction dewatering devices 22. An applicator section 23 is arranged in the conditioning part 11 after the dewatering section. The applicator section comprises an applicator 24 for applying release agent on the fabric 9. The dewatering section 21 of the fabric loop comprises a substantially vertical run VR of the fabric which does not deviate more than 30° from a vertical plane and a suction dewatering device 22 is placed along the vertical run o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.