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US 11,441,272 B2Granted
Method to produce a paperboard, a paperboard and a corrugated board
AssigneeStora Enso OYJ
InventorTuomo Sippus
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Abstract
The present invention relates to a method for producing a paperboard comprising the steps of; providing a furnish comprising cellulosic fibers, applying the furnish on at least one wire to form a web, dewatering the web on said at least one wire by subjecting the web to a pressure above 150 kPa without the use of a press roll nip and thereafter pressing the dewatered web to form a paperboard. The invention also relates to a paperboard and a corrugated board.
Claims12
A method for producing a paperboard comprising the steps of;
- a) providing a furnish comprising cellulosic fibers,
- b) applying the furnish on at least one wire to form a web,
- c) dewatering the web on said at least one wire by subjecting the web to a pressure above 150 kPa without the use of a press roll nip and thereafter,
- d) pressing the dewatered web to form a paperboard,
- wherein the web comprises a first and second side and the dewatering is done from both sides of the web.
2 more elements
Dependencies are inferred from the claim text.