Method of forming a fibrous product

Harri Kiiskinen (Inventor), Esa Torniainen (Inventor), Karita Kinnunen-Raudaskoski (Inventor)

Research output: PatentPatent


The present invention relates to a method of forming a molded fibrous product, comprising the steps of foaming an aqueous suspension of natural fibers, optionally in combination with synthetic fibers, to provide a first fibrous foam, a surfactant may be added to aid the foaming, feeding the fibrous foam into a mold, mechanically withdrawing a part of the water contained in the foam to produce a solidified, moist fibrous composition, and evaporating water from the solidified, moist fibrous composition to produce a dry fibrous product.
Original languageEnglish
Patent numberUS10259151B2
Priority date13/09/13
Filing date15/09/14
Publication statusPublished - 30 Apr 2016
MoE publication typeH1 Granted patent

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