A METHOD TO PRODUCE A BUILDING PANEL AND A SEMI-FINISHED PRODUCT
First Claim
1. A method to produce a building panel, comprisingproviding a substrate,applying a thermosetting binder in dry form on the substrate for forming a sub-layer,controlling the moisture content of the sub-layer when arranged on the substrate,applying a sheet on the sub-layer, wherein the sheet comprises one or more of a paper sheet, a non-woven, a woven fibre sheet, or a fibre sheet, andpressing the substrate, the sub-layer and the sheet together to form a building panel, thereby the thermosetting binder of the sub-layer impregnates the sheet.
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Accused Products
Abstract
A method to produce a building panel, including: providing a substrate, applying a thermosetting binder in dry form on the substrate for forming a sub-layer, applying a sheet on the sub-layer, and pressing the substrate, the sub-layer and the sheet together to form a building panel, thereby the thermosetting binder of the sub-layer impregnates the sheet from below. Also, a semi-finished product.
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Citations
33 Claims
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1. A method to produce a building panel, comprising
providing a substrate, applying a thermosetting binder in dry form on the substrate for forming a sub-layer, controlling the moisture content of the sub-layer when arranged on the substrate, applying a sheet on the sub-layer, wherein the sheet comprises one or more of a paper sheet, a non-woven, a woven fibre sheet, or a fibre sheet, and pressing the substrate, the sub-layer and the sheet together to form a building panel, thereby the thermosetting binder of the sub-layer impregnates the sheet.
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8. A method to produce a building panel, comprising
providing a substrate, controlling relative humidity (RH) of ambient air enclosing an application device adapted to apply a thermosetting binder in dry form, applying a thermosetting binder in dry form on the substrate by said application device for forming a sub-layer, applying a sheet on the sub-layer, and pressing the substrate, the sub-layer and the sheet together to form a building panel, thereby the thermosetting binder of the sub-layer impregnates the sheet.
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17. A method to produce a building panel, comprising
providing a substrate, applying at least one thermosetting binder on the substrate, controlling reactivity of said at least one thermosetting binder by applying different types and/or forms of thermosetting binders on the substrate, applying a sheet on said at least one thermosetting binder, wherein the sheet comprises one or more of a paper sheet, a non-woven, a woven fibre sheet, or a fibre sheet, and pressing the substrate, said at least one thermosetting binder and the sheet together to form a building panel, thereby said at least one thermosetting binder impregnates the sheet.
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20. A method to produce a building panel, comprising
providing a substrate, applying a thermosetting binder in dry form on the substrate for forming a sub-layer, applying a sheet on the sub-layer, wherein the sheet comprises one or more of a paper sheet, a non-woven, a woven fibre sheet, or a fibre sheet, and pressing the substrate, the sub-layer and the sheet together to form a building panel, thereby the thermosetting binder of the sub-layer impregnates the sheet.
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28. A semi-finished product adapted to form, or form part of, a building panel, comprising
a substrate, a sub-layer arranged on the substrate, a sheet arranged on the sub-layer, wherein the sheet comprises one or more of a paper sheet, a non-woven, a woven fibre sheet, or a fibre sheet, and wherein the moisture content of the sub-layer is 5-35 wt %, such that the sheet is adhered to the sub-layer.
Specification