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US 2025/0067002 A1Published application
Preparation of a foam comprising discrete units of foam embedded in a foam matrix
AssigneeStora Enso OYJ
InventorsOruç Köklükaya, Daniel Hult Torron, Maryam Ghanadpour, Martin Sterner
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Abstract
The present invention relates to a method for the preparation of a solid foam, wherein the method comprises depositing discrete units of a foam on a surface to obtain a first foam deposition, followed by depositing a wet foam between the discrete units to obtain a subsequent foam deposition, and drying the wet foam. The invention further relates to a solid foam comprising discrete units of foam embedded in a foam matrix.
Claims21
A method for preparing a solid foam, wherein the method comprises:
- depositing discrete units of a foam on a surface to obtain a first foam deposition,
- depositing a wet foam between the discrete units to obtain a subsequent foam deposition, and
- drying the wet foam to obtain a solid foam wherein the discrete units of a foam are embedded in a foam matrix.
A solid foam comprising:
- discrete units of a foam embedded in a foam matrix, and
- wherein the solid foam comprises at least 75-95 wt % cellulose fibres as calculated on a total weight of the solid foam.
(canceled)
Dependencies are inferred from the claim text.