Abstract
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 language | English |
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Patent number | US10259151B2 |
IPC | B29C33/42,B29C67/20,C08J9/00,C08J9/30,D21H21/24,D21H21/56 |
Priority date | 13/09/13 |
Filing date | 15/09/14 |
Publication status | Published - 30 Apr 2016 |
MoE publication type | H1 Granted patent |