US 12,479,185 B2
Plant and method for producing a corrugated board
Marco Imposti, Capannori (IT); and Gianluca Berrettini, Gragnano (IT)
Assigned to FOSBER S.P.A., Pescaglia (IT)
Appl. No. 18/023,575
Filed by Fosber S.p.A., Pescaglia (IT)
PCT Filed Aug. 6, 2021, PCT No. PCT/EP2021/071984
§ 371(c)(1), (2) Date Feb. 27, 2023,
PCT Pub. No. WO2022/043024, PCT Pub. Date Mar. 3, 2022.
Claims priority of application No. 102020000020650 (IT), filed on Aug. 31, 2020.
Prior Publication US 2024/0017516 A1, Jan. 18, 2024
Int. Cl. B29C 65/00 (2006.01); B31F 1/28 (2006.01); B29C 65/40 (2006.01); B29C 65/48 (2006.01); B29C 65/78 (2006.01)
CPC B31F 1/284 (2013.01) [B31F 1/2818 (2013.01); B31F 1/285 (2013.01); B31F 1/2872 (2013.01); B29C 65/40 (2013.01); B29C 65/48 (2013.01); B29C 65/7861 (2013.01); B29C 65/7894 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A plant for producing a corrugated board, comprising:
a first unwinder for unwinding a first continuous paper web from a first reel;
a second unwinder for unwinding a second continuous paper web from a second reel;
a third unwinder for unwinding a third continuous paper web from a third reel;
a single facer configured to receive the first continuous paper web and the second continuous paper web, corrugate the first continuous paper web, and glue together the first continuous paper web and the second continuous paper web along corrugation flutes formed in the first continuous paper web and form a continuous single face corrugated board web;
a double facer configured to receive the continuous single face corrugated board web and the third continuous paper web and glue the continuous single face corrugated board web and the third continuous paper web together along the corrugation flutes formed in the first continuous paper web and form a continuous corrugated board web;
at least one first thermographic camera positioned along an advancement path direction of at least one continuous web selected from said first continuous paper web, said second continuous paper web, said third continuous paper web, said continuous single face corrugated board web, and said continuous corrugated board web, for detecting thermographic images of said at least one continuous web;
a control system comprising a thermographic image processing system which is programmed in relation to each of said at least one thermographic camera to (1) extrapolate in real time from the thermographic images acquired by the at least one thermographic camera temperature profiles according to lines transverse to the advancement path direction of the at least one continuous web framed by the at least one thermographic camera; and (2) determine a maximum temperature value, a minimum temperature value, and an average temperature value along each temperature profile.