Powder based balancing layer
AssigneeVälinge Innovation AB
InventorsHans Persson, Niclas Hakansson, Jan Jacobsson
Life of this patent
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Abstract
A method of manufacturing a building panel with a decorative surface layer, a core and a balancing and/or protective layer, wherein the method includes applying a first layer of a first powder based mix, including wood fibers and a thermosetting binder, on a core; applying a liquid substance on the first powder based mix; drying the first powder based mix; turning the core with the dried first powder based mix such that the first powder based mix points downwards; applying a second layer on the upper part of the core; and curing the first and second layers by providing heat and pressure, wherein the first layer forms the balancing and/or protective layer and the second layer forms the decorative surface layer in the building panel.
Claims28
A method of manufacturing a building panel with a decorative surface layer, a core and a balancing and/or protective layer, wherein the method comprises the steps:
- applying a first layer of a first powder based mix, comprising wood fibres and a thermosetting binder, on a core;
- applying a liquid substance on the first powder based mix;
- drying the first powder based mix;
- turning the core with the dried first powder based mix such that the first powder based mix points downwards and an upper part of the core faces upwards;
- applying a second layer on the upper part of the core;
- and
- curing the first and second layers by providing heat and pressure, wherein the first layer forms the balancing and/or protective layer and the second layer forms the decorative surface layer in the building panel.
A method of manufacturing a building panel with a decorative surface layer, a core and a balancing and/or protective layer, wherein the method comprises the steps of:
- applying a first layer of a first powder based mix, comprising wood fibres and a thermosetting binder, on a carrier;
- applying a liquid substance on the first powder based mix;
- placing a lower surface of the core on the first powder based mix after the liquid substance has been applied on the first powder based mix;
- applying a second layer on an upper surface of the core;
- and
- curing the first and second layers by providing heat and pressure, wherein the first layer forms the balancing and/or protective layer and the second layer forms the decorative surface layer of the building panel.
A method of manufacturing a separate and continuous powder based balancing and/or protective layer, which is essentially uncured, wherein the method comprises the steps of:
- applying a powder mix, comprising fibres and a thermosetting binder, on a carrier;
- applying moisture on the powder mix such that the powder mix is connected together to form an uncured balancing and/or protective layer;
- and
- releasing the uncured balancing and/or protective layer from the carrier.
A method of manufacturing a building panel comprising the steps, performed in order, of:
- applying a first layer of a first powder based mix comprising wood fibres and a thermosetting binder on a first surface of a core, the core possessing a second surface positioned opposite the first surface of the core;
- applying a liquid substance on the first powder based mix;
- drying the first powder based mix;
- turning the core with the dried first powder based mix such that the first surface with the first powder based mix points downwards and the second surface of the core faces upwards;
- applying a second layer on the second surface of the core;
- and
- curing the first and second layers by providing heat and pressure to form the building panel, wherein the first layer forms a balancing and/or protective layer connected to the first surface of the core and the second layer forms a decorative surface layer connected to the second surface of the core.
Dependencies are inferred from the claim text.