Extended nip press arrangement
US4561939A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1984 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Mar 26, 2004 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F3/045
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A paper machine press with a web being picked off a forming wire and passed through a first two roll nip sandwiched between upper and lower felts, the web transferred to the lower felt and then to a felt of a second press with the second double felted press being an extended nip type formed between an upper roll and a lower concave shoe with a relieved leading edge and a water impervious belt passing through the nip sliding over the shoe with the belt being guided on an annular stationary guide, the web transferred to the upper felt following the extended nip by a suction shoe within the felt and thereafter the web being transferred to a fifth felt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.