Solid wood composite core board with wood fiber directions being symmetrically staggered and longitudinally and transversely laminated, solid wood composite board and manufacturing method

Abstract

The invention relates to a solid wood composite core board with wood fiber directions being symmetrically staggered and longitudinally and transversely laminated, a solid wood composite board and a manufacturing method. The solid wood composite core plate comprises transverse grain core materials and longitudinal grain core materials, and the core plate is formed by laminating an upper core material single-layer plate and a lower core material single-layer plate, wherein each core material single-layer plate is formed by transversely splicing N + 1 / 2 core material units, and N is the number ofthe core material units; wherein each core material unit is formed by splicing a transverse grain core material unit and longitudinal grain core strips on one side or two sides, and each transverse grain core material unit is formed by connecting and splicing edges of a plurality of longitudinal grain plate strips; when N + 1 / 2 core material units are transversely spliced, one half of the core material unit is located on one side, and longitudinal grain core strips are arranged on the outer sides of the two sides of the core material unit; the upper core material single-layer plate and the lower core material single-layer plate have the same structure; the upper core material single-layer plate and the lower core material single-layer plate are staggered and laminated in the same direction, namely, the upper core material unit and the lower core material unit which are half of the width are distributed on the two sides, so that the upper core material single-layer plate and the lowercore material single-layer plate form a symmetrical staggered longitudinal-transverse laminated structure in the wood fiber direction; the width h of each core material unit is equal to H / (N + 1 / 2), wherein H is the width of the whole solid wood composite board core board.

Description

technical field [0001] The invention relates to a solid wood composite core board, a solid wood composite board and a manufacturing method with wood fiber directions symmetrically staggered and laminated vertically and horizontally, and belongs to the technical field of solid wood composite boards. Background technique [0002] With the increasingly intensified contradiction between the supply and demand of wood, human beings began to pay attention to the comprehensive utilization of wood in the early 1960s. For more than 50 years, solid wood composite panels with various finishes spliced ​​and laminated by chemical adhesives came into being. At present, the solid wood composite boards on the market have a single wood fiber structure in the vertical and horizontal directions. Defects such as easy deformation. Because of the over-reliance on chemical adhesives, the large amount of glue used leads to the blockage of the cell cavity of the wood fiber, which loses the natural p...

AI Technical Summary

Problems solved by technology

[0003] At present, whether it is multi-layer plywood or three-layer, five-layer and other even-numbered vertically and horizontally laminated solid wood composite panels, the wood fibers of each layer are in the same direction. If it is cut into a small area, the disadvantages of short wood fibers are not obvious. If Cut into a larger area for use, its bending strength and internal stress change of the plate are still not satisfactory, and it is still easy to deform

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