Double-layer solid wood composite floor and preparation method thereof

Abstract

The invention provides a double-layer solid wood composite floor and a preparation method thereof. The double-layer solid wood composite floor comprises a surface plate and a back plate. Multiple through holes are formed in the back plate in a hollowed-out mode. A glue layer is arranged between the surface plate and the back plate, hot pressing is conducted, a double-layer wood plate structure is formed, wood grain directions of the surface plate and the back plate are identical, and wood blocks perpendicular to grain of the surface plate and grain of the back plate and corresponding to the contours of the through holes are embedded into the through holes. By means of the double-layer solid wood composite floor, glue layers are reduced, only one glue layer is used, and the emission amount of harmful gas is reduced. The wood blocks with perpendicular middle grain are embedded, longitudinal strength is greatly improved, and the big-width floor can be machined. The problems that double-layer solid wood composite floors are poor in deformation and stress resisting capacity, traditional three-layer or multi-layer composite wood floors are provided with too many glue layers, and excessive harmful gas is released are solved.

Description

technical field [0001] The invention relates to a double-layer solid wood composite floor and a preparation method thereof. Background technique [0002] With the continuous development of the solid wood composite flooring industry, users have higher and higher requirements for the environmental protection performance of the solid wood composite flooring. The traditional three-layer or multi-layer solid wood composite flooring process is relatively complicated, and there is a problem of excessive release of harmful gases in many glue layers. The traditional two-layer solid wood composite floor has the disadvantages of low longitudinal strength and cannot process large-format floors due to its pure two-layer vertical and horizontal structure. In the length direction, when the temperature and humidity change, the surface board is very easy to crack from the seam. There is an urgent need for a double-layer solid wood composite floor and its preparation method to solve the pro...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a double-layer solid wood composite floor and its preparation method, which solves the problem of excessive glue layers and excessive release of harmful gases in traditional three-layer or multi-layer composite wood flooring, and solves the problem of two-layer solid wood composite flooring at the same time. The floor is purely anti-deformation, poor stress capacity and the problem that the surface board is easily cracked from the seam when the temperature and humidity change

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