Apparatus and method for controlling the curling or paper or paperboard
OwnerStefan Kuni, Mika Leinoinventors
Life of this patent
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Abstract
The apparatus for controlling the curling of paper or paperboard comprises members for bringing liquid on a paper or paperboard web (W) and members for spreading the amount of liquid evenly, in such a manner that the members for bringing liquid on the paper or paperboard web (W) are in the travel direction of the web placed before the members for spreading the amount of liquid evenly. The invention also relates to a method for controlling the curling of paper or paperboard.
Claims20
An apparatus for controlling curling of paper or paperboard, characterized in that it comprises members for bringing liquid on a paper or paperboard web (W) and members for spreading the amount of liquid evenly, in such a manner that the members for bringing liquid on the paper or paperboard web (W) are in the travel direction of the web placed before the members for spreading the amount of liquid evenly.
The apparatus according to claim 2, characterized in that the members for bringing liquid to the paper or paperboard web (W) comprise one or more inlet openings for liquid.
A method for controlling the curling of paper or paperboard, characterized in that liquid is applied on paper or paperboard web, and the amount of liquid is spread evenly.
A method for renewing the coating line for paper or paperboard web (W) in such a manner that the curling of a paper or paperboard web can be controlled in the coating line, characterized in that an assembly is installed in the coating line, which comprises members for bringing liquid on the paper or paperboard and members for spreading the amount of liquid evenly.
Dependencies are inferred from the claim text.