CN102909762A - Production method for bamboo-wood composite board - Google Patents

Abstract

The invention relates to a production method for a bamboo-wood composite board. The production method comprises the following steps of: using an oriented structural board (OSB) as a core layer namely a center layer, and paving sawali sheets soaked with a phenolic-resin adhesive on two sides of the core layer in a non-layered mode; and paving a longitudinal wood veneer and a transverse wood veneer on the upper side and the lower side namely the surface layer and the bottom layer of the sawali sheets. According to the bamboo-wood composite board produced by the method, the sawali sheets are arranged in a non-layered mode, so that the strength of the bamboo-wood composite board is ensured, and the comprehensive utilization ratio of materials is improved.

Description

A kind of production method of bamboo-wood composite board

technical field

The invention relates to a wood-based panel processing method, in particular to a production method of a bamboo-wood composite panel.

Background technique

In the patent No. 200410010295.7, a high-strength composite container floor plywood invention patent, the core layer of the container floor plywood is medium density fiberboard or particleboard, the surface board is tropical broad-leaved hardwood, and the layers on both sides of medium density fiberboard or particleboard The boards are configured symmetrically. Each layer of veneers from the innermost layer of long medium board to medium fiber board is arranged in the form of orthogonal combination. The use of tropical broad-leaved wood as raw materials results in a waste of precious and scarce resources, and the use of ordinary particle boards and medium-density fiberboards as the core layer has insufficient overall strength to meet the requirements for the container floor.

In the patent No. ZL200510088330.1 bamboo-wood plywood production method, it is mentioned that a bamboo-wood plywood is made of multi-layer wooden veneer and bamboo veneer after hot pressing, wherein any two adjacent layers of bamboo veneer At least one layer of wooden veneer is sandwiched between the boards; the production method of the plywood with this structure is also described, and the bamboo veneer does not need to be dipped in glue. However, because bamboo contains more nutrients such as sugar and starch than ordinary wood, wood and bamboo products are prone to rot, mildew and insects in warm and humid environmental conditions, which shortens the service life of the product.

Contents of the invention

The object of the present invention is to provide a production method of bamboo-wood composite board with high strength, good uniformity, high material comprehensive utilization rate and excellent anti-corrosion performance, so as to be used in the production of packing bottom board.

The present invention aims to solve the problems of low material comprehensive utilization rate, poor anti-corrosion performance and low strength in the existing production method.

The technical scheme adopted in the present invention is:

In this production method, oriented strand board OSB is used as the core layer, that is, the central layer, and bamboo strips impregnated with phenolic resin glue are paved on both sides of the core layer without layering, and then the upper and lower sides of the bamboo strips, that is, the surface layer and the bottom layer are respectively Lay a longitudinal wooden veneer and a horizontal wooden veneer.

Bamboo strips are impregnated with phenolic resin glue, drained, dried at a temperature below 90°C to a moisture content of 7-18%, and paved on the upper and lower sides of the core OSB without layering.

The outer surfaces of the surface layer and the bottom layer are covered with phenolic resin impregnated paper respectively.

The production method of oriented strand board (OSB) is to make flake-like wood shavings or bamboo shavings through sizing, directional paving, and hot pressing.

The advantages of the present invention are: the bamboo-wood composite board produced by the present invention adopts oriented strand board as the core layer, and the bamboo strips are arranged in different layers, so the bending strength is high and the dimensional stability is good, which ensures the strength of the composite board , the comprehensive utilization rate of materials is high, and the anti-corrosion performance is good, so it can be used as the bottom plate of the container.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Detailed ways

The compounding of the present invention will be further described below in conjunction with specific examples.

As shown in the figure, when the present invention is produced, the oriented strand board (OSB) 5 is used as the core layer, that is, the center layer. Both sides of the core layer are paved with bamboo strips 3 impregnated with phenolic resin glue, and then a vertical wooden veneer 1 and a horizontal wooden veneer 2 are respectively laid on the upper and lower sides of the bamboo strips, that is, the surface layer and the bottom layer.

Bamboo strips 3 are impregnated with phenolic resin glue, drained, dried at a temperature below 90°C to a moisture content of 7-18%, and paved on the upper and lower sides of the core OSB without layering. the

The horizontal wooden veneer 2 is glued, and the outer surface of the surface layer and the bottom layer is covered with phenolic resin impregnated paper 0 . After billet assembly and cold pressing, press at a temperature of 140°C and a hot pressing pressure of 3.5Mpa for 45 minutes and then cool to 60°C to release the board. After sawing and milling, the finished product is obtained.

The production method of oriented strand board (OSB) is to make flake-like wood shavings or bamboo shavings through sizing, directional paving, and hot pressing.

Claims (4)

1. a production method of bamboo-wood composite board, it is characterized in that this production method is with oriented strand board OSB as core layer, i.e. central layer, paving is impregnated with the bamboo that phenolic resin glue is impregnated in different layers on both sides of core layer Bamboo strips, and then lay a vertical wooden veneer and a horizontal wooden veneer on the upper and lower sides of the bamboo strips, that is, the surface layer and the bottom layer. 2. The production method of bamboo-wood composite boards according to claim 1, characterized in that the bamboo strips are impregnated with phenolic resin glue, drained, dried at a temperature below 90°C to a moisture content of 7-18%, and spread in different layers Installed on the upper and lower sides of the core OSB. 3. The production method of bamboo-wood composite board according to claim 1, characterized in that the outer surfaces of the surface layer and the bottom layer are covered with phenolic resin impregnated paper respectively. 4. The production method of bamboo-wood composite board according to claim 1, characterized in that the production method of oriented strand board OSB is to form by flaky wood shavings or bamboo shavings through sizing, directional paving, and hot pressing .

Images