Heavy wood material formed by pressing wood veneers and preparation method thereof

A wood veneer and board technology, which is used in the joining of wood veneers, veneer presses, plywood presses, etc., can solve problems such as cost reduction, and achieve rich wood grain features, low manufacturing costs, and great decoration. sexual effect

Inactive Publication Date: 2017-05-31
SICHUAN MAI LI MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, by mechanically splitting the veneer, uniform sizing is achieved, and the moisture and process of the glue and veneer are controlled, so that direct pressing without drying after sizing can be achieved, and the cost can be reduced to overcome the disadvantages of wood sheet laminated manufacturing materials in the prior art. Deformation cracking, instability and other problems caused by unidirectional performance differences also make up for the lack of monotonous and unnatural surface texture of this type of material

Method used

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  • Heavy wood material formed by pressing wood veneers and preparation method thereof
  • Heavy wood material formed by pressing wood veneers and preparation method thereof
  • Heavy wood material formed by pressing wood veneers and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Take poplar veneer with a moisture content of 15-20% (the veneer size is 1270*650*4.0mm, no dead knots), and use a roller with a rhombic cone to split the veneer on both sides to make dense holes. , The hole spacing is less than 3.0 mm, relatively uniform, and the single-sided depth is 2 mm. It is immersed in the phenolic resin glue while mechanically splitting, and soaked for about 5 minutes. The raw material after dipping is quantitatively (quantified according to the required density, according to the density of 1.2 in this example), transported into the mold cavity of the molding machine, first press the predetermined shape, and then gradually pressurize to 55Mpa, when the pressure is finally reached to the design value , The material is dense and uniform. Clamp the mold, fix the material in the mold, send the mold and the material into the heating chamber, and heat it to 140 degrees Celsius. The mold and the material are heated and cured in the heating chamber for 3...

Embodiment 2

[0045] Take a eucalyptus veneer with a moisture content of 12-15% (specification 1270*700*2.0mm, no dead knots), and use a cone-shaped roller on the surface to split the veneer on both sides, nailing out dense holes and hole spacing The eucalyptus veneer is less than 3.0 mm, relatively uniform, and the depth of one side is 1 mm. The eucalyptus veneer is steamed in boiling water for 20 minutes, filtered to remove the gum, and then the veneer is dried to a moisture content of 13%. Transfer to the sizing machine for sizing, immerse in the phenolic resin glue solution, soak for about 3 minutes. After dipping, the raw material is quantitatively (quantified according to the required density, in this case according to the density of 1.1) into the mold cavity of the molding machine, first press the predetermined shape, and then gradually pressurize to 42Mpa, when the pressure design value is finally reached , The material is dense and uniform. Clamp the mold, fix the material in the m...

Embodiment 3

[0047] Take poplar veneer with a moisture content of 15-20% (the veneer size is 1270*650*1.2mm, no dead knots), and use a diamond cone-shaped roller to split the veneer on both sides to make dense holes. The hole spacing is less than 5.0 mm, relatively uniform, and the depth of one side is 0.5 mm. It is immersed in the phenolic resin glue while being mechanically split for about 2 minutes. The dipped raw material quantitatively (quantified according to the required density, in this case according to the density of 1.0) is delivered to the mold cavity of the molding machine, first press the predetermined shape, and then gradually pressurize to 35Mpa, when the pressure is finally reached to the design value , The material is dense and uniform. Clamp the mold, fix the material in the mold, send the mold and the material into the heating chamber, and heat it to 140 degrees Celsius. The mold and the material are heated and cured in the heating chamber for 3 hours to complete the glu...

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Abstract

The invention discloses an artificial panel. The artificial panel is formed by pressing wood veneers and is mainly made of the ordinary wood veneers. The density of the artificial panel is greater than 0.80 g/cm<3>, the internal bonding strength is greater than 1.1 MPa, the elasticity modulus is greater than 8000 MPa, and the chord plane hardness is greater than 8500 N. The wood veneers formed through rotary cutting or/and slicing of low-density quick-growing wood are mainly used, through mechanical fine cracking, gluing, positioning die molding and heating and curing molding, the dense heavy wood material which is natural, rich and attractive in texture is obtained, the problem that various kinds of low-density wood cannot be well used due to the defects that the wood material is uneven, prone to deforming and cracking and the wood property is poor is solved, a large amount of fast-growing low-density wood and defective small firewood can be made into high-temperature materials to be used, and waste materials are changed into valuable materials.

Description

Technical field [0001] The invention relates to an artificial board and a processing method thereof, in particular to a heavy wood material pressed by using fast-growing wood veneers and a preparation method thereof, and belongs to the technical field of artificial board processing. Background technique [0002] The existing manufacturing method of wood phenolic resin laminated material is to make wood into laminated material by selecting, cutting, dipping, aging, drying, pre-pressing, assembling and hot pressing the wood. The technical solution disclosed in Chinese Patent ZL93105062.6 is of this kind. The laminated material prepared in the prior art and the texture of the sheet after being opened are all horizontal parallel textures generated by monotonous lamination or the texture of the laminated laminated sheets. Because the wood of the base material of the lamination is 0.5~2.5mm veneer made by peeling or slicing, the natural texture of the wood can hardly be seen by itself...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/04B27D1/08B27D3/00B27M1/00B32B21/13B32B37/10
CPCB27D1/04B27D1/08B27D3/00B27M1/003B32B21/13B32B37/10
Inventor 陈滔顾新宇
Owner SICHUAN MAI LI MACHINERY
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