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US 6,712,935 B2Granted
Method and arrangement in tail threading in a paper machine
AssigneeMetso Paper, Inc.
InventorsPaul Goodall, Kari Rinneheimo, Jouko Villa
Life of this patent
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AssigneeMetso Paper, Inc.
InventorsPaul Goodall, Kari Rinneheimo, Jouko Villa
Estimating the term…
A method and an arrangement in tail threading in a paper machine, in which the paper web is dried in production by means of a plurality of dryer groups consisting of a dryer section, and in which tail threading the threading tail is cut, taken as wetted to the finishing device, and spread to its full width for production, and in which method, before the threading tail is take to the finishing device, the dryer section is kept in the settings of production operation or is set to otherwise correspond to production, except that a wetting process is started, in which the web is wetted at the full width for the duration of the tail threading, essentially before its cutting, to achieve an even moisturizing effect, and the wetting process is stopped after web is being spread.
A method in tail threading in a paper machine, in which the paper web is dried in production by means of a plurality of dryer groups consisting of a dryer section, and in which tail threading the threading tail is cut, taken as wetted to a finishing device, and spread to its full width for production, and in which method, before the threading tail is taken to the finishing device, the dryer section is kept in the settings of production operation or is set to otherwise correspond to production, except that a wetting process is started, in which the web is wetted at the full width for the duration of the tail threading, essentially before its cutting, to achieve an even moisturizing effect, and the wetting process is stopped after web is being spread.
An arrangement in a parer machine, which includes a multi-stage dryer section, threading tail cutting devices, a finishing device, and devices to take the threading tail to the finishing device, and possible rewetting devices, characterized in that the arrangement includes full width wetting devices on the middle of the dryer section before cutting devices and which are arranged to wet the web, essentially over its full width, for the duration of the tail-threading phase and a control for controlling the wetting devices according to a tail threading sequence.
Dependencies are inferred from the claim text.