Composite artificial board and its preparing method

A technology of wood-based panels and products, which is applied in the field of composite wood-based panels and its manufacturing, and can solve problems such as the decrease of surface bonding strength, limited wood resources, and insurmountability

Inactive Publication Date: 2007-04-11
王春鸣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The deformation of the straw board is large and difficult to overcome
[0004] 2. Isocyanate must be used as a binder. During hot pressing, the wood-based panel is easy to stick to the hot pressing board (the industry term is called sticking board - the same below). In order to overcome the sticking board phenomenon, a release agent must be used, which increases the cost
[0005] 3. In order to overcome the board sticking phenomenon, the release agent must be sprayed on the upper and lower surfaces of the pavement, but its penetration into the surface material will cause the surface bonding strength of the board to decrease
[0006] 4. The price of isocyanate glue is more than 10 times higher than that of urea-formaldehyde glue commonly used in wood fiberboard and wood particleboard, resulting in too high cost
[0007] The existence of the above problems seriously restricts the development of the straw-based panel industry
[0008] In addition, the current wood fiberboard and wood particleboard have the advantages of good deep processing performance and good physical and chemical properties, but there are also problems such as formaldehyde and other harmful substances affecting the human body and the environment, and wood resources are limited.

Method used

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  • Composite artificial board and its preparing method
  • Composite artificial board and its preparing method
  • Composite artificial board and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1), wood fibers such as the three residues in the forest area, secondary small fuelwood and the like are obtained through a general process, mixed with urea-formaldehyde glue or other aldehyde glues, and paved on the press to form the lower surface;

[0021] (2) Straw is made into straw fiber by a general process, mixed with isocyanate glue, and paved on the lower surface layer to form a core layer;

[0022] (3), will be mixed with the wood fiber paving of urea-formaldehyde glue on the core layer of step 2, form surface layer 1;

[0023] (4) Then, the composite wood-based panel is obtained through pre-pressing-hot-press forming-cutting-cooling-stacking-aging treatment-sanding.

[0024] The composite wood-based panels thus prepared, after testing, the product quality conforms to GB / T1178-1999 "Medium Density Fiberboard", LY / T1611-2003 "Fiberboard for Floor Substrates", GB18580-2001 "Indoor decoration, decoration materials wood-based panels and Formaldehyde release limi...

Embodiment 2

[0027] (1), take the wood fiberboard and spread it on the press to form the lower surface layer,

[0028] (2), spread the fine state straw product that is mixed with isocyanate glue on the wood fiber board that is used as the lower surface layer to form the core layer,

[0029] (3), get the wood fiberboard and lay it on the core layer of step (2), to form the upper surface layer,

[0030] (4) Then, the composite wood-based panel is obtained through pre-pressing-hot-press forming-cutting-cooling-stacking-aging treatment-sanding.

Embodiment 3

[0032] (1), take the wood fiberboard and spread it on the press to form the lower surface layer,

[0033] (2), take the straw fiber board, spread it on the wood fiber board as the lower surface after coating aldehyde glue such as urea-formaldehyde glue on both sides, to form the core layer,

[0034] (3), get the wood fiberboard and lay it on the core layer of step (2), to form the upper surface layer,

[0035] (4) Then, the composite wood-based panel is obtained through pre-pressing-hot-press forming-cutting-cooling-stacking-aging treatment-sanding.

[0036] The fiberboard in the example can be replaced by the corresponding particleboard.

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Abstract

The present invention is composite artificial board and its making process, and belongs to the field of composite artificial board making technology. The composite artificial board is made with stalks, wood material and shavings as material, and organic adhesive, and through mixing, spreading, pressurizing and other steps. The composite artificial board has stalk material in the core layer and wood material in the surface layers, and is superior to pure stalk board. The composite artificial board of the present invention has the advantages of low cost, high performance and environment friendship, and may be used widely in building decoration, reinforced floor and furniture.

Description

technical field [0001] The invention relates to a composite wood-based panel and a manufacturing method thereof. Background technique [0002] A large amount of straw is produced every year in agricultural production. Burning straw is one of the main ways for farmers to dispose of straw. Burning straw not only wastes resources, but also pollutes the environment, affects the normal flight of airport flights and the safety of driving on expressways, and also poses a great potential fire hazard. In order to solve the processing problem of stalks, one of the main methods at present is to use stalks to manufacture wood-based panels (referring to "straw medium and high-density wood-based panels and their production methods and uses" disclosed in Chinese invention patent application No. 03135176.X), but The following problems exist in the current straw-based panels and their manufacturing techniques: [0003] 1. The deformation of the straw board is large and difficult to overco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/04B32B21/13B32B1/08B27N3/08
Inventor 王春鸣
Owner 王春鸣
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