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AssigneeTeknologian tutkimuskeskus VTT Oy
InventorsMarja Juvonen, Jaakko Hiltunen, Petri Jetsu, Marie Gestranius, Ali Harlin, Vesa Kunnari, Jouni Lattu, Karita Kinnunen, Tuomo Hjelt, Ilkka Nurminen, Erkki Saharainen, Henna Lampinen
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A moldable fibrous product, includes foam-formed fibrous material selected from fibrous webs, paper webs, board webs, or sheets cut from any of the webs, at least one polymer selected from carbohydrate derivatives, polylactic acid, polyurethane and polyolefins impregnated in the web, and from 0.001 to 0.1% by weight of at least one foaming agent.
A moldable fibrous product comprising foam-formed fibrous material selected from fibrous webs, paper webs, board webs, or sheets cut from any of said webs, at least one polymer selected from carbohydrate derivatives, polylactic acid, polyurethane and polyolefins impregnated in the web, and from 0.001 to 0.1% by weight of at least one foaming agent.
A method for the manufacture of a moldable fibrous product, which comprises the steps of forming at least one foamed dispersion by dispersing fibers in a foamable liquid comprising water and at least one foaming agent, conveying the foamed dispersion or dispersions to a foraminous support and draining liquid trough the foraminous support to form a web or a sheet, whereby the draining is carried out with the aid of vacuum or by gravitational filtration, and impregnating at least part of the web or sheet with a liquid comprising at least one polymer to obtain the moldable fibrous product.
Dependencies are inferred from the claim text.