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US 10,808,360 B2Granted
Method for producing a fibrous material web
AssigneeAndritz Inc.
InventorsAndreas Anzel, Klaus Gissing, Thomas Scherb
Life of this patent
Estimating the term…
Abstract
A method for producing a fibrous material web, particularly for producing a tissue or hygienic paper web, in which a fibrous suspension is dewatered in a crescent former to obtain a fibrous material web, and dried on a Yankee. After the crescent former, the fibrous material web is guided along with the forming screen and felt over a suction roller downstream of the forming roller. A device for carrying out the method for producing a fibrous material web.
Claims16
A method for production of a fibrous pulp web (9), comprising:
- in a Crescent former (10), feeding a fibrous pulp suspension through a headbox (1) between a forming wire (3) and a felt (4) to dewater the fibrous pulp suspension by centrifugal force in the area of a forming roll (2) to form a fibrous pulp web (9),
- guiding the fibrous pulp web (9) over a suction roll (11) together with the forming wire (3) and the felt (4) directly after the forming roll (2) to dry the fibrous pulp web (9) with the aid of a Yankee (6), wherein
- the felt (4) is between the suction roll (11) and the fibrous pulp web (9) and the forming wire (3) is wrapped around the fibrous pulp web (9) on the outside.
A method for production of a fibrous pulp web (9), comprising:
- feeding a fibrous pulp suspension through a headbox (1) between a forming wire (3) and a felt (4) to dewater the fibrous pulp suspension by centrifugal force in the area of a forming roll (2) to form a fibrous pulp web (9),
- guiding the fibrous pulp web (9) over a suction roll (11) together with the forming wire (3) and the felt (4) directly after the forming roll (2) to dry the fibrous pulp web (9), wherein
- the felt (4) is between the suction roll (11) and the fibrous pulp web (9) and the forming wire (3) is wrapped around the fibrous pulp web (9) on the outside, the fibrous pulp web (9) is wrapped round the suction roll (11) in places and a moist air having a temperature greater than 150° C. and moisture content of more than 150 g H2O/kg air flows through the fibrous pulp web (9) on the suction roll (11).
Dependencies are inferred from the claim text.