Method and apparatus for producing a board for production of panels, board for production of panels, method and apparatus for producing panels, and panel producible by the method

A method of producing a spreading material mat, the method comprising the following steps:

• providing particulate material comprising or consisting of particulate wooden material,
• producing glued particulate material by applying an adhesive to the particulate material,
• forming a spreading material mat having a longitudinal direction and having a transversal direction perpendicular to the longitudinal direction by homogeneously spreading the glued particulate material onto a conveyor on which the spread glued particulate material is conveyed in a conveying direction that is parallel to the longitudinal direction of the spreading material mat, wherein the glued particulate material is spread onto the conveyor over a length of a spreading sector extending in conveying direction such that, in conveying direction, the spread glued particulate material is accumulated to the spreading material mat over the length of the spreading sector,
• wherein a reinforcement material is applied to the spread glued particulate material perpendicular to the conveying direction by spraying, sputtering, and/or injecting
• during forming the spreading material mat and/or
• after forming the spreading material mat and before any pressing of the spreading material mat
• such that the spreading material mat has at least one transversal reinforcement zone containing the reinforcement material,
• wherein the reinforcement material is applied to the spread glued particulate material by at least one injection needle assembly with injection needles, the injection needle assembly being mounted at an injection needle assembly moving means, wherein, at the start of an injection sector, the injection needle assembly is moved downwards such that the injection needles penetrate in vertical direction into the spread glued particulate material, then the injection needle assembly is moved in conveying direction with the same speed as the spread glued particulate material is conveyed on the conveyor while the reinforcement material is injected to the spread glued particulate material by the injection needles, afterwards, at the end of the injection sector, the injection needle assembly is moved upwards in vertical direction such that the injection needles are pulled out of the spread glued particulate material in vertical direction, and then the injection needle assembly is moved back to the start of the injection sector.