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Directional shaving board and manufacturing method thereof

A technology for oriented strand board and shavings, which is applied in chemical instruments and methods, flat products, wood-layered products, etc., and can solve the problems of unsatisfactory static bending strength and elastic modulus.

Inactive Publication Date: 2013-02-06
江苏快乐木业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the oriented strand board obtained by using such a core board is used for container boards, its static bending strength and elastic modulus cannot meet the requirements for container boards

Method used

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  • Directional shaving board and manufacturing method thereof
  • Directional shaving board and manufacturing method thereof
  • Directional shaving board and manufacturing method thereof

Examples

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preparation example Construction

[0032]The present invention has no special limitation on the preparation method of the shavings, and the technical solutions for the preparation of the shavings well-known to those skilled in the art can be adopted. The present invention preferably adopts the chipping machine whose model is CARMANAH 34 / 114BLOCK DISC FLAKER (FORMERLY CAE) SOB / SERIAL NO.150-83 to produce the shavings of the above size. is 800mm, and the diameter is preferably 100mm~600mm.

[0033] The oriented strand board provided by the present invention includes a bottom board 3 . The present invention has no special limitation on the type and preparation method of the bottom board, and the bottom board in the oriented strand board well-known to those skilled in the art can be used. In the present invention, the bottom plate preferably includes 1-7 layers of veneer, more preferably 3-5 layers; the top layer of the panel is preferably a cloned wood veneer; the present invention is concerned with the material ...

Embodiment 1

[0048] Provide length is 120mm, width is 20mm and thickness is the pine wood shavings and beech wood shavings of 0.5mm, according to mass ratio is 10:90 pine wood shavings and beech wood shavings are mixed, the mixed shavings obtained is 100 according to the mass ratio of shavings and adhesive: 18 Spray and atomize the adhesive on the surface of the shavings to complete the sizing process of the shavings; use the paving machine to arrange the shavings that are uniformly mixed with the adhesive and arrange them in layers along the direction of the wood grain of the shavings, and pave the shavings. Obtaining a slab; pre-pressing the obtained slab and then hot-pressing at a pressure of 2.9MPa-3.3MPa, a temperature of 135°C-145°C, and a time of 1650s-1700s to obtain an oriented strand board.

[0049] The present invention carries out the performance test of the obtained oriented strand board, the density is measured according to the method recorded in 4.2 in the national standard G...

Embodiment 2

[0052] Provide the poplar shavings and eucalyptus shavings with a length of 110mm, a width of 15mm and a thickness of 0.45mm, mix the poplar shavings and eucalyptus shavings according to the mass ratio of 25:75, and obtain the mixed shavings according to the quality of the shavings and the adhesive Spray the adhesive on the surface of the shavings at a ratio of 100:18 to complete the sizing process of the shavings; use the paving machine to arrange the shavings that are uniformly mixed with the adhesive and arrange them in layers along the direction of the wood grain of the shavings, and pave the shavings , to obtain a slab; the obtained slab is pre-pressed and then hot-pressed at a pressure of 2.7MPa-3.1MPa, a temperature of 130°C-140°C, and a time of 1600s-1650s to obtain an oriented strand board.

[0053] The present invention carries out the performance test of the obtained oriented strand board, the density is measured according to the method recorded in 4.2 in the nationa...

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Abstract

The invention provides a directional shaving board, which comprises a panel, a core board and a bottom board. The directional shaving board is characterized in that wood shavings in the core board comprise soft wood shavings and hard wood shavings; a soft material is wood with the air-dry density of less than 0.5g / cm<3>; and a hard material is wood with the air-dry density of more than or equal to 0.5g / cm<3>. By adopting the mixture of the two shavings, the obtained directional shaving board is high in static bending intensity and elastic modulus, and the internal binding force of the directional shaving board is improved so as to be beneficial to the application of the directional shaving board. Experimental results prove that the static bending intensity along the grain of the directional shaving board is more than or equal to 50MPa, and the static bending intensity across the grain of the directional shaving board is more than or equal to 30MPa; the modulus of elasticity along the grain of the directional shaving board is more than or equal to 5,000MPa, and the modulus of elasticity across the grain of the directional shaving board is more than or equal to 3,000MPa; the internal bonding strength of the directional shaving board is more than or equal to 0.45MPa; and the directional shaving board can bear dynamic load of more than or equal to 2.0T.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an oriented strand board and a preparation method thereof. Background technique [0002] Oriented strand board (OSB) is a product that is mainly used to replace plywood in the construction industry. It is made of narrow, long and flat large shavings. become. When the shavings are paved and formed, the glue-mixed particle boards are arranged longitudinally according to the fiber direction, and then the particle boards are pressed. The shape of this particleboard requires a larger aspect ratio, and the thickness is slightly thicker than ordinary particleboard. Its performance is similar to that of plywood, and it is often used as a structural material instead of plywood. [0003] The prior art discloses a variety of oriented strand boards, such as the Chinese patent with the publication number CN101332614A disclosing a flat wood oriented strand board and its manufactu...

Claims

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Application Information

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IPC IPC(8): B27N3/02B27N3/08B32B21/02B32B37/10B32B37/06B32B37/12
Inventor 王道江刘小兵邵学粉张禄森刘年祥
Owner 江苏快乐木业集团有限公司
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