A method to coat a building panel and such a coated building panel
AssigneeVälinge Innovation AB
InventorGöran Ziegler
Life of this patent
Estimating the term…
Abstract
A method to at least partially coat a building panel, including applying a first coating composition on a building panel having a surface including at least portions including amino resins, for forming a first coating on at least said portions of said surface, wherein the first coating composition has a glass transition temperature less than 30° C. and reactive portions, applying a second coating composition on at least portions of the first coating for forming a second coating, wherein the second coating composition includes reactive portions adapted to react with the reactive portions of the first coating. The disclosure also relates to such a coated building panel.
Claims18
A method to at least partially coat a building panel, the method comprising
- applying a sub-layer comprising an amino resin on a substrate,
- applying a wood veneer layer on the sub-layer,
- pressing the wood veneer layer and the sub-layer such that the amino resin from the sub-layer permeates through the wood veneer layer and after pressing is present at at least portions of a surface of the wood veneer layer facing away from the substrate,
- subsequently applying a first coating composition on the surface of the wood veneer layer comprising said portions including the amino resin, for forming a first coating on at least said portions of said surface, wherein the first coating composition comprises oligomers having a glass transition temperature less than 30° C. and reactive portions,
- heat curing the first coating composition such that the first coating composition is at least partially cured and a first coating is formed, and
- subsequently applying a second coating composition on at least portions of the at least partially cured first coating for forming a second coating, wherein the second coating composition comprises reactive portions configured to react with the reactive portions of the first coating composition.
A coated building panel comprising
- a substrate, a sub-layer arranged on the substrate, and a wood veneer layer, wherein the wood veneer layer has a surface facing away from the substrate comprising at least portions including an amino resin,
- a first coating adhered to at least said portions of said surface including the amino resin,
- a second coating chemically bonded to the first coating, and
- optionally one or several further coatings arranged on the second coating,
- wherein adherence between said surface and the first and second coating is exceeding 3 MPa, as measured in accordance with ISO 4624:2016.
A method to at least partially coat a building panel, the method comprising
- applying a substantially homogenous mix comprising an amino resin and fillers on a substrate,
- pressing the mix to a surface layer comprising the amino resin and the fillers,
- subsequently applying a first coating composition on a surface of the surface layer facing away from the substrate for forming a first coating on said surface, wherein the first coating composition comprises oligomers having a glass transition temperature less than 30° C. and reactive portions,
- heat curing the first coating composition such that the first coating composition is at least partially cured and a first coating is formed, and
- subsequently applying a second coating composition on at least portions of the at least partially cured first coating for forming a second coating, wherein the second coating composition comprises reactive portions configured to react with the reactive portions of the first coating composition.
A coated building panel, comprising
- a substrate and a surface layer comprising an amino resin and filler,
- a first coating adhered to a surface of the surface layer facing away from the substrate,
- a second coating chemically bonded to the first coating, and
- optionally one or several further coatings arranged on the second coating,
- wherein adherence between said surface and the first and second coating is exceeding 3 MPa, preferably exceeding 3.2 MPa, as measured in accordance with ISO 4624:2016.
Dependencies are inferred from the claim text.