Powder based balancing layer
AssigneeVälinge Innovation AB
InventorsHans Persson, Niclas Håkansson, Jan Jacobsson
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Abstract
A method to produce a building panel comprising a decorative surface layer, a core and a balancing and/or protective layer is disclosed.
Claims21
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 fibers and a thermosetting binder, on a core;
- applying a liquid substance on the first powder based mix;
- drying the first powder based mix by infrared heating;
- 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.
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 fibers and a thermosetting binder, on a carrier;
- applying a liquid substance on the first powder based mix;
- drying the first powder based mix by infrared heating;
- placing the core on the first powder based mix;
- 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 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 fibers 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;
- drying the uncured balancing and/or protective layer by infrared heating;
- and
- releasing the uncured balancing and/or protective layer from the carrier.
Dependencies are inferred from the claim text.