HEAT AND PRESSURE GENERATED DESIGN

• US 20140171554A1
• Filed: 02/19/2014
• Published: 06/19/2014
• Est. Priority Date: 01/15/2010
• Status: Active Grant

• Current Assignee: Valinge Innovation AB
• Original Assignee: Valinge Innovation AB
• Inventors: ZIEGLER, GORAN, Lindgren, Kent
• Granted Patent: US 9,410,319 B2
• Time in Patent Office: Days
• US Class Current: 524/13
• CPC Class Codes: B44C 5/0476 with abrasion resistant properties
• CPC Class Codes: E04C 2/246 combinations of materials fully covered by E04C2/16 and E04C2/20
• CPC Class Codes: E04F 13/0871 having an ornamental or specially shaped visible surface E04F13/0867 takes precedence
• CPC Class Codes: Y10T 428/249924 Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
• CPC Class Codes: Y10T 428/24995 Two or more layers

Abstract

A wood fibre based panel with surfaces layer with lower parts which has less binders than the upper parts. Also, a method of manufacturing a building panel having a structured surface with a design that has colour variation in register with the structure obtained by a varying pressure distribution applied on the surface.

Claims

1. A building panel comprising a decorative surface layer connected to a core wherein the surface layer is a mix comprising fibres, coloring substance, a binder and wear resistant particles, and wherein the surface layer comprises lower parts and upper parts, wherein there is a binder concentration gradient between the lower parts and upper parts.

2. The building panel according to claim 1, wherein the lower parts comprises less binder than the upper parts.

3. The building panel according to claim 1, wherein the upper parts comprises less binder than the lower parts.

4. The building panel according to any claim 1, wherein the binder is a melamine resin.

5. The building panel according to claim 1, wherein the fibres are wood fibres.

6. The building panel according to claim 1, wherein the panel is floor panel

7. A building panel produced according to a method of manufacturing a building panel having plain coloured surface whereby the method comprises the steps of:

applying a layer comprising a mix of fibres, binder, wear resistant particles, and a coloring substance, on a carrier wherein the mix is floatable under heat and pressure; and

applying heat and pressure on the mix,

wherein the mass ratio between resins and fibres is less than about 90%.