Solid-wood composite board made of super-thick single boards and producing method thereof

Abstract

The invention provides a solid-wood composite board made of super-thick single boards, which comprises two surface layers on external surfaces and a core layer between the two surface layers, adhesive is arranged among single boards, the core layer comprises a super-thick single board with the thickness of 6 mm to 12 mm, and the surface layers comprise single boards with the thickness of 0.2mm to1.5 mm. The super-thick single boards of the core layer are single boards made by rotatably cutting logs, and spot-shape or segment-shape crack grains are arranged on the loosened surface of the single boards in the direction along the grain. The solid-wood composite board made of super-thick single boards enables the composite board combined by the super-thick core boards to have no distortion or deformation by adopting the central-symmetric single-board assembly structure and forming spot-shape or segment-shape crack grains by discongesting on the surfaces of the single boards of the core layer, and has equal performance as that of the solid wood. The super-thick core board enables the glue layers of the veneer to be reduced, the applied glue amount is reduced, the cost is saved, and the release amount of the formol can be reduced to enable the solid-wood composite board to be more environmental friendly.

Description

technical field [0001] The invention relates to a composite board, in particular to a solid wood composite board made from a single board. At the same time, it also relates to a manufacturing method of the solid wood composite board. Background technique [0002] At present, solid wood composite panels mainly include two types of products, such as blockboard and multi-layer solid wood composite plywood. A special kind of plywood, the core board is usually a plywood or a wooden lattice structure board composed of sawed logs into solid wood strips. Using this method to manufacture the core board has many sawing loss and low wood utilization rate when the logs are sawed and cut, and because the wood strips in the combined blockboard are connected by glue in the transverse direction, the transverse static of the core board is caused. The flexural strength mainly depends on the connection strength of the adhesive, so the blockboard usually fails to meet the requirements of the n...

AI Technical Summary

Problems solved by technology

Due to the large stress in the veneer of 4mm ~ 10mm, it is very easy to produce warping deformation (even cause curling deformation such as figure 1 As shown) and cracking, etc., have seriously affected the yield rate of the veneer and subsequent processing procedures such as gluing, billeting, etc. , leading to warping and deformation of the manufactured composite panels; moreover, the use of secondary veneer processing technology increases the veneer process

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