Disclosed is a mass plywood panel assembly including at least two engineered wood panel assemblies. Each wood panel assembly includes a first layer including a first set of billets, a second layer including a second set of billets and a third layer including a third set of billets of sheets. The first set of billets, the second set of billets, and the third set of billets are all oriented longitudinally along the length of the wood panel assembly and the at least two engineered wood panel assemblies are connected by an end joint, thereby forming the mass plywood panel assembly. Methods of manufacturing mass plywood panel assemblies are also disclosed.

Disclosed is a mass plywood panel assembly including at least two engineered wood panel assemblies. Each wood panel assembly includes a first layer including a first set of billets, a second layer including a second set of billets and a third layer including a third set of billets of sheets. The first set of billets, the second set of billets, and the third set of billets are all oriented longitudinally along the length of the wood panel assembly and the at least two engineered wood panel assemblies are connected by an end joint, thereby forming the mass plywood panel assembly. Methods of manufacturing mass plywood panel assemblies are also disclosed.

A layered-up veneer board is formed by layering veneers up to a predetermined height such that the fiber directions of the respective veneers are alternately perpendicular to one another, and the layered-up veneer board is compressed by a compression device, to remove moisture contained in the veneers. Wood is a material in which the tensile strength in the fiber direction of the wood is higher than the tensile strength in the direction perpendicular to the fiber direction. With this layering scheme, even when stress is applied to the veneers and causes elongational deformation of these veneers as a result of compressing the layered-up veneer boards in the layering direction, elongational deformation of the veneers in the directions perpendicular to the fiber directions thereof can be reduced.

A layered-up veneer board is formed by layering veneers up to a predetermined height such that the fiber directions of the respective veneers are alternately perpendicular to one another, and the layered-up veneer board is compressed by a compression device, to remove moisture contained in the veneers. Wood is a material in which the tensile strength in the fiber direction of the wood is higher than the tensile strength in the direction perpendicular to the fiber direction. With this layering scheme, even when stress is applied to the veneers and causes elongational deformation of these veneers as a result of compressing the layered-up veneer boards in the layering direction, elongational deformation of the veneers in the directions perpendicular to the fiber directions thereof can be reduced.

An engineered wood plank made using a unique lamella layer. The lamella layer has a number of lamella layer sections joined together by lap splice joints which allow the lamella layer to be pressure adhered onto a backing material without breaking, and wear in a manner similar to known engineered hardwood flooring.

An engineered wood plank made using a unique lamella layer. The lamella layer has a number of lamella layer sections joined together by lap splice joints which allow the lamella layer to be pressure adhered onto a backing material without breaking, and wear in a manner similar to known engineered hardwood flooring.

A method for manufacturing plywood includes receiving a face sheet on a main conveyor and feeding a plurality of pieces of core veneer onto a veneer conveyor by an automated core veneer feeder. The method also includes removing one or more of the plurality of pieces of core veneer from the veneer conveyor and placing the one or more of the plurality of pieces of core veneer onto the face sheet.

A method for manufacturing plywood includes receiving a face sheet on a main conveyor and feeding a plurality of pieces of core veneer onto a veneer conveyor by an automated core veneer feeder. The method also includes removing one or more of the plurality of pieces of core veneer from the veneer conveyor and placing the one or more of the plurality of pieces of core veneer onto the face sheet.

To improve the reliability of fire resistance with regard to wood materials containing a fireproofing treatment agent such as a semi-incombustible wood material while also improving both the ease of procuring raw materials and mass productivity, a panel board includes front/back veneers constituting the front and back thereof and a core veneer layer between the front/back veneers. The veneer fiber direction of the front/back veneers is substantially parallel to the lengthwise direction of the panel board. The core veneer layer is a layer obtained by stacking a plurality of sheets of core veneer in the thickness direction. The veneer fiber directions of all of the sheets of the core veneer are substantially orthogonal to the lengthwise direction of panel board. The front/back veneers has a thickness of 1.5-4.0 mm, and the thickness of the core veneer layer 31 is equal to or greater than the total thickness of the front/back veneer 21. Lathe checks and cracks are exposed on the board grain surfaces of all the front/back veneer 21, and an aqueous solution of a fireproofing agent is infiltrated therefrom.

To improve the reliability of fire resistance with regard to wood materials containing a fireproofing treatment agent such as a semi-incombustible wood material while also improving both the ease of procuring raw materials and mass productivity, a panel board includes front/back veneers constituting the front and back thereof and a core veneer layer between the front/back veneers. The veneer fiber direction of the front/back veneers is substantially parallel to the lengthwise direction of the panel board. The core veneer layer is a layer obtained by stacking a plurality of sheets of core veneer in the thickness direction. The veneer fiber directions of all of the sheets of the core veneer are substantially orthogonal to the lengthwise direction of panel board. The front/back veneers has a thickness of 1.5-4.0 mm, and the thickness of the core veneer layer 31 is equal to or greater than the total thickness of the front/back veneer 21. Lathe checks and cracks are exposed on the board grain surfaces of all the front/back veneer 21, and an aqueous solution of a fireproofing agent is infiltrated therefrom.