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Three-layer structure wooden composite board material and manufacturing method

A composite board and three-layer structure technology, applied in the field of architectural decoration, can solve the problems of low nail holding force of the board, unavoidable release of formaldehyde, low static bending strength and bearing capacity of the board, and achieve good board quality and product environmental protection performance. The effect of high, static bending strength and nail holding force

Inactive Publication Date: 2006-05-10
SOUTHWEST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing particleboard and medium density fiberboard are all single structural units, using formaldehyde series resin adhesives. Therefore, the main problems in the process of use are: formaldehyde release is inevitable, the nail holding force of the board is low, the static bending strength of the board and Disadvantages such as low carrying capacity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0009] Example 1: Firstly, pine shavings and fibers were prepared from 8-10-year-old Yunnan pine trees. The shavings of the core layer are obtained by the chipping method. The shavings are 45mm long, 10mm wide, and 0.1mm thick. The shavings are dried to a moisture content of 8% before sizing (MDI), and the sizing amount is 6%. Paraffin waterproofing was applied at 1%. The fiber preparation of the surface layer is prepared using conventional techniques. The fiber is applied with urea-formaldehyde resin glue, the application amount is 1%, and then dried to a moisture content of 10%. Then pave in the order of the bottom layer, core layer, and upper layer.

[0010] Finally, it is hot-pressed and formed under normal operating conditions. The thickness of the core layer of the formed three-layer wood composite board accounts for 21% of the board.

example 2

[0011] Example 2: basically the same as Example 1. The differences are: the shavings of the core layer are 70mm long, 30mm wide and 0.5mm thick, and the core layer thickness of the formed three-layer wood composite board accounts for 61% of the board. The surface layer is made of polyester fiber, and the adhesive used is MDI.

example 3

[0012] Example three: basically the same as example one. The differences are: the shavings of the core layer are 110mm long, 50mm wide and 1mm thick, and the core layer thickness of the formed three-layer structure wood composite board accounts for 91% of the board. The surface layer is made of a mixture containing plant fiber and glass fiber, the composition ratio of which is 6:3:1, and the adhesive used is MDI.

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Abstract

The invention relates to a wood composite board with a three-layer structure and a manufacturing method thereof, belonging to the technical field of architectural decoration. The composite board consists of a surface layer and a core layer. Among them, the core material composed of flat structural units is made of shavings, and the size of the flat structural units is 45-110mm in length, 10-50mm in width, and 0.1-1mm in thickness, and the thickness of the core layer accounts for 21-91% of the plate. ; The surface material is composed of fiber or granular structural units. The material consists of material preparation, paving and molding, pre-pressing, hot-pressing and other processes. Among them, the adhesive used for the core layer is isocyanate, and the paving and forming process is laid in the following order: the surface layer, the core layer, and the upper surface layer, and the lower surface layer and the upper surface layer are symmetrical. Compared with the prior art, the present invention has the advantages of good board surface quality, high product environmental protection performance, high static bending strength and nail holding force, etc. The board can be widely used in architectural decoration and high-grade furniture manufacturing, and can also be used for packaging And the field of building formwork.

Description

Technical field: [0001] The invention relates to a wood composite board with a three-layer structure and a manufacturing method thereof, belonging to the technical field of architectural decoration. Background technique: [0002] The existing particleboard and medium density fiberboard are all single structural units, using formaldehyde series resin adhesives. Therefore, the main problems in the process of use are: formaldehyde release is inevitable, the nail holding force of the board is low, the static bending strength of the board and The carrying capacity is low and other shortcomings. Invention content: [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a three-layer structure wooden composite board composite and its manufacturing method. [0004] The present invention is achieved like this: [0005] The three-layer structure wood composite board consists of a surface layer and a core layer. Wherein, the core...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B21/00
Inventor 杜官本杜依泓
Owner SOUTHWEST FORESTRY UNIVERSITY