# US 10,369,721 B2 · Wooden material panel, in particular in the form of a wood-plastic composite material, and a method for producing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,369,721 B2 - Document ID: US10369721B2 - Status: Granted - Kind: B2 - Application number: 15/524,457 - Filed: 2015-05-13 - Published: 2018-09-27 - Granted: 2019-08-06 - Earliest claimed: 2014-11-06 - Assignees: Flooring Technologies Ltd. - Applicants: Flooring Technologies Ltd. - Inventors: Norbert Kalwa; Jens Siems; Ingo Lehnhoff - Web page: https://patentgrep.com/patent/US10369721B2 ## CPC - B27N 3/04: from fibres - B27N 1/02: Mixing the material with binding agent (mixing in general B01F) - B27N 3/002: {characterised by the type of binder (compositions of macromolecular compounds C08L)} - B27N 3/02: from particles - B27N 3/06: Making particle boards or fibreboards, with preformed covering layers, the particles or fibres being compressed with the layers to a board in one single pressing operation - B27N 3/18: Auxiliary operations, e.g. preheating, humidifying, cutting-off - B27N 3/24: characterised by using continuously acting presses having endless belts or chains moved within the compression zone - B27N 7/005: {Coating boards, e.g. with a finishing or decorating layer} - B27N 1/00: Pretreatment of moulding material - B27N 7/00: After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity - B29C 43/003: {characterised by the choice of material} - B29C 43/006: {Pressing and sintering powders, granules or fibres} - B29C 43/02: of articles of definite length, i.e. discrete articles {(B29C35/0227 takes precedence)} - B27N: MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL (containing cementitious material B28B; shaping of substances in a plastic state B29C; fibreboards made from fibrous suspensions D21J; drying F26B17/00) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) ## Abstract The present invention relates to a wooden material panel, in particular a wood-plastic composite material, including particles of wood and at least one plastic that is functionalized with at least one organic compound. At least one decorative layer is provided on at least one side of the wooden material panel. ## Claims ### Claim 1 A process for the production of a wooden board, in the form of a wood-plastic composite, comprising the steps of: providing wood fibers with a wood fiber moisture content of from 6 to 15% and polymer fibers; forming a mixture of the wood fibers and the polymer fibers in a blow line with a mixing ratio of from 70% by weight of wood fibers/30% by weight of polymer fibers to 40% by weight of wood fibers/60% by weight of polymer fibers; intermediately buffering or intermediately storing the mixture in a feeder; blowing the mixture onto a first roll to form a first preliminary mat (airlay); defibrating the first preliminary mat and once again blowing the mixture onto a second roll to form a second preliminary mat (airlay); transferring the second preliminary mat onto a transport belt and introducing the second preliminary mat into at least one heat-conditioning oven for preliminary consolidation by thermal bonding to give a pre-consolidated mat, wherein the temperatures in the heat treatment in the heat-conditioning oven are maintained by blowing in hot air and the core temperature of the second preliminary mat is within a range between 100 and 150° C.; transfer of the pre-consolidated mat into at least one twin-belt press for compaction to give a wooden board; and cooling of the compacted wooden board in at least one cooling press to temperatures of from 10 to 70° C. ### Claim 2 (depends on 1) The process according to claim 1, wherein the polymer is a thermoplastic. ### Claim 3 (depends on 1) The process according to claim 1, wherein the polymer used comprises bicomponent fibers. ### Claim 4 (depends on 1) The process according to claim 1, wherein the polymer used comprises thermoplastics selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), or polyester. ### Claim 5 (depends on 1) The process according to claim 1, wherein the second preliminary mat made of wood particles and plastic is pre-consolidated in the at least one heat-conditioning oven at temperatures of from 130 to 200° C. ### Claim 6 (depends on 1) The process according to claim 1, wherein a density of the pre-consolidated mat after discharge from the heat-conditioning oven is from 40 to 200 kg/m3. ### Claim 7 (depends on 1) The process according to claim 1, wherein after leaving the heat-conditioning oven the pre-consolidated mat is cooled and subjected to finishing processes. ### Claim 8 (depends on 1) The process according to claim 1, wherein in the at least one twin-belt press the pre-consolidated mat is compacted to a thickness of from 2 to 20 mm. ### Claim 9 (depends on 1) The process according to claim 1, wherein in the at least one twin-belt press the pre-consolidated mat is compacted at temperatures of from 150 to 250° C. ### Claim 10 (depends on 1) The process according to claim 1, wherein in the at least one twin-belt press the pre-consolidated mat is compacted at a pressure of from 2 MPa to 10 MPa. ### Claim 11 (depends on 1) The process according to claim 1, wherein in the at least one cooling press the compacted wooden board is cooled to temperatures of from 20 to 40° C. ### Claim 12 (depends on 1) The process according to claim 1, wherein in the at least one cooling press the compacted wooden board is cooled at a pressure which is the same as the pressure in the twin-belt press. ### Claim 13 (depends on 1) The process according to claim 1, wherein a thickness of the compacted wooden board after leaving the cooling press is from 2 to 15 mm. ### Claim 14 (depends on 1) The process according to claim 1, wherein a density of the compacted wooden board is from 500 to 1500 kg/m3. ### Claim 15 (depends on 1) The process according to claim 1, wherein the pre-consolidated mat is transferred into the at least one twin-belt press with simultaneous application of at least one decorative finish film to the top side of the pre-consolidated mat for further consolidation. ### Claim 16 (depends on 15) The process according to claim 15, wherein at least one separation ply is simultaneously applied above the decorative finish film during the transfer of the pre-consolidated mat into the at least one twin-belt press. ### Claim 17 (depends on 1) The process according to claim 1, comprising: providing the wooden board; applying a decorative layer to the top side of the board, and compressing under the action of pressure and temperature to form a laminate. ### Claim 18 (depends on 2) The process according to claim 2, wherein the polymer is in the form of thermoplastic granulates or synthetic fibers. ### Claim 19 (depends on 4) The process according to claim 4, wherein the polymer used comprises polyethylene terephthalate. ### Claim 20 (depends on 1) The process according to claim 1, wherein at least one decorative finish film comprising an amino resin-filled decorative paper and at least one varnish layer is laminated onto the wooden board using at least one adhesive.