Method to produce a building panel and a semi-finished product
AssigneeVälinge Innovation AB
InventorsHans PERSSON, Marcus BERGELIN
Life of this patent
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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.
Claims33
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 wherein the sheet further comprises pigments and/or fillers, 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.
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, wherein the sheet comprises pigments and/or fillers, 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.
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 wherein the sheet further comprises pigments and/or fillers, 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.
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 wherein the sheet further comprises pigments and/or fillers, 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.
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 sheet further comprises pigments and/or fillers, and
- wherein the moisture content of the sub-layer is 5-35 wt % such that the sheet is adhered to the sub-layer.
Dependencies are inferred from the claim text.