第１のプライを含む製品の製造方法

Japanese Patent JP7308851

B2

The present invention relates to a method for production of product comprising a first ply, the method comprising the steps of: providing a fibrous suspension comprising fibers; providing said fibrous suspension to a porous medium to form a substrate comprising fibers; providing a first additive suspension comprising a first strengthening agent, wherein the first strengthening agent is microfibrillated cellulose; providing a second additive suspension comprising at least one retention agent and/or at least one drainage agent; dewatering said substrate on said porous medium; performing additive addition to said substrate during said dewatering of said substrate on said porous medium, wherein the additive addition is performed when the substrate has a dry content of less than 20 weight-%, preferably less than 10 weight-%, most preferably less than 7 weight-%, and wherein the additive addition comprises adding at least a layer of said first additive suspension and a layer of said second additive suspension to said substrate by means of multilayer curtain coating, and further dewatering and drying said substrate after said dewatering on said porous medium so as to provide said first ply. The invention also relates to a paper, board or non-woven product obtainable by the method.

Back folk, chi
Heiskanen, Isto
Saukkonen, food

JP2020542799A

July 14, 2023

February 25, 2019

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Stra Enso Oijay

D21H11/18; D21H23/48

JP2019510890A
JP2018504529A
JP2018527476A
JP49006207A
JP9268497A

WO2017175062A1

Patent Attorney Corporation Asamura Patent Office

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