Drying section of a paper machine with a closed draw to a calender section
US6402892B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | May 22, 2020 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21G9/0063
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a method at the end of the drying section of a paper machine, drying cylinders (1, 2) are arranged in two substantially horizontal cylinder rows, wherein the first drying cylinders (1) are placed substantially higher than the second drying cylinders (2). In the method, the web (W) to be dried is conveyed alternately between the cylinder rows of the drying cylinders (1, 2). Further in the method, the transfer of the web (W) between the drying cylinders (1, 2) is supported by a wire run arrangement, and the web is guided after the last drying cylinder (1, 2) of the drying section (A) by a transfer arrangement in between the rolls of a pair of rolls in the calender section (B) of the paper machine. In the method, after the uppermost horizontal cylinder row (SR1) formed by the first drying cylinders (1), at least one drying cylinder (1′) is placed in such a way that the upper surface of its mantle lies substantially higher than the level defined by the upper surfaces of the mantles of the drying cylinders (1) of the upper horizontal cylinder row (SR1), and the web (W) is conveyed through this upper drying cylinder (1′), while being supported by a continuous support means…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.