Paper or paperboard product comprising at least one ply containing high yield pulp and its production method

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11299853
APP PUB NO 20190218716A1
SERIAL NO

16334371

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Abstract

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A method of producing a paper or paperboard product having at least one ply comprising high yield pulp (HYP), comprising the steps of: —providing a furnish comprising at least 50% of high yield pulp (HYP) of a total pulp content in said furnish, said high yield pulp being produced with a wood yield above 85%; —dewatering the furnish to form a moist web and pressing said moist web to a dry solids content of at least 40-70%; and —densifying the moist web to a density above 600 kg/m3 in a press nip of a paper machine at a temperature above a softening temperature of water-saturated lignin comprised in said high yield pulp to provide a paper or paperboard product, containing at least 30% high yield pulp (HYP) of a total pulp content of said product.

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Patent Owner(s)

Patent OwnerAddress
IPCO SWEDEN AB C/O SANDVIK ABC/O SANDVIK AB SANDVIKEN 811 81

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Engstrand, Per Aby, SE 4 30
Hoglund, Hans Matfors, SE 7 86
Norgren, Sven Sundsvall, SE 2 15
Pettersson, Gunilla Sundsvall, SE 3 21

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