Shortened layout from dryer to reel in tissue machine
AssigneeMetso Paper Karlstad AB
InventorAnders Tommy Lindén
Life of this patent
Estimating the term…
Abstract
A dry end of a tissue machine is made shorter by close-coupling a reel-up to the drying section and supporting the web from the drying section to the reel-up by a foil or a belt such that web stability is maintained, thus allowing high-speed operation. The foil's downstream edge can form a nip with the paper roll and nip load can be controlled by controlling pivotal movement of the foil. The reel-up can include a calendering belt for calendering the web as it passes through a nip between the belt and a reel drum supported on the belt, and a rotatable reel spool on which a paper roll is wound in nipping engagement with the reel drum. Alternatively, the reel drum can be eliminated and the paper roll can be supported on the belt. A composite shaftless core for winding is also disclosed.
Claims8
A dry end of a papermaking machine, the dry end comprising:
- a Yankee dryer for drying a paper web;
- a rotatably driven reel spool for winding the paper web creped from the Yankee dryer thereon, the reel spool being located downstream of and proximate to the dryer;
- and
- a winding support belt stretched between at least a pair of spaced-apart guide rolls and supporting the reel spool and a paper roll wound thereon, the belt forming a nip with the paper roll.
An apparatus for a dry end of a papermaking machine having a Yankee dryer for drying a paper web, the apparatus comprising:
- a rotatably driven reel spool for winding the paper web creped from the Yankee dryer;
- and
- a belt running in a loop about a plurality of guide rolls, a first of the guide rolls being positioned proximate the dryer and spaced upstream of a growing paper roll wound on the reel spool, a second of the guide rolls being positioned adjacent the paper roll and downstream thereof such that a portion of the loop of the belt between the first and second guide rolls extends from a location proximate the dryer to the paper roll, said portion of the loop stabilizing the paper web as the paper web travels from the dryer to, and is wound on, the paper roll.
A paper machine, comprising:
- a forming section for forming a wet paper web;
- a drying section for drying the wet paper web, the drying section including at least one through-air dryer (TAD) comprising a foraminous dryer roll and a TAD fabric arranged in an endless loop about guide rolls such that the TAD fabric passes about the dryer roll, the TAD fabric being arranged to receive the wet paper web and carry the web about the dryer roll;
- and
- a reel-up located after the through-air dryer for winding the paper web onto a rotating reel spool, the TAD fabric downstream of the dryer roll forming a nip with the reel spool such that the paper web carried by the TAD fabric passes through the nip and winds onto the reel spool to form a paper roll.
Dependencies are inferred from the claim text.