Powder based balancing layer
First Claim
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1. 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.
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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.
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Citations
21 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. 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:
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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. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 21)
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19. 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:
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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. - View Dependent Claims (20)
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Specification