Back to results
US 12,752,512 B2Granted
Moulded multi-layered fibrous product and use thereof
AssigneeMetsä Spring Oy
InventorsJarkko Tuominen, Emilia Vänskä
Life of this patent
Estimating the term…
Abstract
According to an example aspect of the present invention, there is provided a moulded multi-layered fibrous product comprising: a first fibrous layer comprising a cellulosic fibrous material; a second fibrous layer on top of the first fibrous layer, the second fibrous layer comprising a cellulosic fibrous material; and the first and/or the second fibrous layer exhibits barrier properties substantially throughout its structure.
Claims20
A moulded multi-layered fibrous product comprising:
- a first fibrous layer comprising a cellulosic fibrous material;
- and
- a second fibrous layer on top of the first fibrous layer, the second fibrous layer comprising a cellulosic fibrous material;
- wherein the second fibrous layer exhibits barrier properties substantially throughout its structure,
- wherein the cellulosic fibrous material of the second fibrous layer comprises cellulosic fibres which have been refined to a Schopper-Riegler number that is larger than 40, and
- wherein the cellulosic fibrous material of the first fibrous layer comprises cellulosic fibres that are unrefined or which have been refined to a Schopper-Riegler number that is less than 40.
3 more elements
A moulded multi-layered fibrous product comprising:
- a first fibrous layer comprising a cellulosic fibrous material;
- and
- a second fibrous layer on top of the first fibrous layer, the second fibrous layer comprising a cellulosic fibrous material;
- wherein the first and/or the second fibrous layer exhibits barrier properties substantially throughout its structure,
- wherein the cellulosic fibrous material of the second fibrous layer comprises cellulosic fibres which have been refined to a Schopper-Riegler number that is larger than 40,
- wherein the cellulosic fibrous material of the first fibrous layer comprises cellulosic fibres which either are unrefined or have been refined less than the refined cellulosic fibres of the second fibrous layer, and
- wherein the density of the second fibrous layer is larger than the density of the first fibrous layer.
4 more elements
Dependencies are inferred from the claim text.