Method of producing a highly stretchable paper

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11339535
APP PUB NO 20200181843A1
SERIAL NO

16500319

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Abstract

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There is provided a method of producing a paper having a grammage according to ISO 536 of 50-250 g/m2, a Gurley value according to ISO 5636-5 of above 15 s and a stretchability according to ISO 1924-3 in the machine direction of at least 9%, said method comprising the steps of: a) providing a pulp, preferably sulphate pulp; b) subjecting the pulp to refining; c) diluting the pulp from step b) and adding the diluted pulp to a forming wire to obtain a paper web; d) pressing and the paper web from step c); e) drying the paper web from step d); f) compacting the paper web from step e) in a Clupak unit at a moisture content of 32-50%, preferably 37-49%, more preferably 41-49%; g) calendering the paper web from step f), optionally after drying, at a moisture content of 21-40%, preferably 30-40%, more preferably 32-39%; h) drying the paper web from step g).

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Patent Owner(s)

Patent OwnerAddress
BILLERUDKORSNAS ABP O BOX 703 SOLNA 169 27

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lindberg, Erik Kalix, SE 6 39
Nordling, Nils Kalix, SE 3 1
Stenman, Tommy Risögrund, SE 1 0

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