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US 6,855,373 B2Granted
Method and device relating to coating a running web
AssigneeBTG Pulp and Paper Technology Aktiebolag
InventorHåkan Karlsson
Life of this patent
Estimating the term…
Abstract
When a running web (3) is coated with a liquid coating mixture, at least one side of the web is provided with a coating (40, 40′) of coating mixture. Existing excess (33) of coating mixture in or adjacent to the regions of the edge portions of the web is removed by being blown off downstreams of where the coating operation is performed.
Claims8
A method for coating a running paper web or a paper board web with a liquid coating mixture, comprising the steps of:
- providing a means for moving the paper web or paper board web;
- providing a dosage member for depositing a coating paste or other coating material over the entire width of the web;
- providing a coater blade downstream of said dosage member, so that at least one side of the web is provided with a coating of a coating mixture;
- providing a blowing-off device downstream of where the coating is performed, which blowing-off device only removes existing excess of coating mixture in or adjacent to regions of at least one edge portion of the paper web or paper board web;
- and
- collecting blown-off excess coating mixture in a collecting member provided outside the web edge.
3 more elements
A method for coating a running paper web or a paper board web with a liquid coating mixture, comprising the steps of:
- providing a means for moving the paper web or paper board web;
- providing a dosage member for depositing a coating paste or other coating material over the entire width of the web;
- providing a coater blade downstream of the dosage member so that at least one side of the web is provided with a coating of a coating mixture;
- providing a blowing-off device downstream of where the coating is performed, which blowing-off device only removes existing excess of coating mixture in or adjacent to the regions of at least one edge portion of the paper web or paper board web;
- and
- providing at least one nozzle on each side of the web near the at least one web edge.
3 more elements
Dependencies are inferred from the claim text.