Plant and method for producing a corrugated board
AssigneeFosber S.p.A.
InventorsMarco IMPOSTI, Gianluca BERRETTINI
Life of this patent
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Abstract
The plant for producing a corrugated board includes one or more single facers and a double facer, as well as respective unwinders for unwinding reels of paper webs. Arranged along the production line, in suitable positions, are thermographic cameras which acquire images through which it is possible to trace the various characteristics of the cardboard, for example the moisture content thereof, detect manufacturing defects, after which it is possible to intervene on one or more process parameters so as to eliminate the causes of the defects.
Claims14
1-26. (canceled)
A method for producing corrugated board, comprising steps as follows:
- unwinding a first continuous paper web from a first reel;
- unwinding a second continuous paper web from a second reel;
- unwinding a third continuous paper web from a third reel;
- forming with the first continuous paper web and the second continuous paper web a continuous single face corrugated board web in a single facer;
- forming with the continuous single face corrugated board web and the third continuous paper web, a continuous corrugated board web in a double facer;
- detecting thermographic images of at least one of said first continuous paper web, said second continuous paper web, said third continuous paper web, and said continuous single face corrugated board web, said continuous corrugated board web;
- at least one first thermographic camera being positioned along an advancement path of a respective continuous web;
- extrapolating, in real time, from the thermographic images acquired by each of said at least one first thermographic camera, temperature profiles of the respective continuous web along lines transverse to the advancement path of the continuous web framed by the thermographic camera;
- and determining a temperature mean value, a temperature maximum value and a temperature minimum value along each of said temperature profiles.
Dependencies are inferred from the claim text.