Method for producing flame-retardant oriented strand boards with full eucalyptus wood scraps

A technology of oriented particle board and leftover material, which is applied in the jointing of wooden veneers, pretreatment of molding materials, wood processing equipment, etc., can solve the problems of oriented particle board with flame retardant function, etc., and achieve the reduction of free formaldehyde content, lower Adding amount, good film-forming effect

Inactive Publication Date: 2016-12-07
广西横县新威林板业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The oriented strand board disclosed in the above-mentioned literature discloses the method of pressing the oriented strand board into oriented strand board by using the remaining rotary cut veneer scraps in the production process of plywood as raw materials or the broken veneer strips produced durin

Method used

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  • Method for producing flame-retardant oriented strand boards with full eucalyptus wood scraps

Examples

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Example Embodiment

[0077] Example 1

[0078] The method for producing flame-retardant oriented strand board from all eucalyptus wood scraps includes the following steps:

[0079] 1) After separating the metal and stone, shavings, and simply screening, the leftovers from the production of eucalyptus boards are sent to the wood chip storage bin for transitional storage, and then sent to the veneer longitudinal shearing machine for length slicing, and the above-mentioned leftovers are longitudinally sliced. Cut into shavings with a length of 50-80 mm; transport the shavings after length slicing to a veneer transverse shearing machine for width slicing, and cut the shavings transversely into shavings with a width of 5-20 mm; and then send it by the conveyor Transition storage in the wet shavings silo; the moisture content of the wet shavings should be kept below 20% by weight;

[0080] The scraps used in the production of eucalyptus boards mentioned above are waste materials that cannot be used in the pro...

Example Embodiment

[0106] Example 2

[0107] The method for producing flame-retardant oriented strand board from all eucalyptus wood scraps includes the following steps:

[0108] 1) After separating the metal and stone, shavings, and simply screening, the leftovers from the production of eucalyptus wood boards are sent to the wood chip storage bin for transitional storage, and then sent to the veneer longitudinal shearing machine for length slicing, and the above leftovers are longitudinally sliced. Cut into shavings with a length of 50-80 mm; transport the shavings after length slicing to a veneer transverse shearing machine for width slicing, and cut the shavings transversely into shavings with a width of 5-20 mm; and then send it by the conveyor Transition storage in the wet shavings silo; the moisture content of the wet shavings should be kept below 20% by weight;

[0109] The scraps used in the production of eucalyptus boards mentioned above are waste materials that cannot be used in the process ...

Example Embodiment

[0135] Example 3

[0136] The method for producing flame-retardant oriented strand board from all eucalyptus wood scraps includes the following steps:

[0137] 1) After separating the metal and stone, shavings, and simply screening, the leftovers from the production of eucalyptus wood boards are sent to the wood chip storage bin for transitional storage, and then sent to the veneer longitudinal shearing machine for length slicing, and the above leftovers are longitudinally sliced. Cut into shavings with a length of 50-80 mm; transport the shavings after length slicing to a veneer transverse shearing machine for width slicing, and cut the shavings transversely into shavings with a width of 5-20 mm; and then send it by the conveyor Transition storage in the wet shavings silo; the moisture content of the wet shavings should be kept below 20% by weight;

[0138] The scraps used in the production of eucalyptus boards mentioned above are waste materials that cannot be used in the process ...

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Abstract

The invention provides a method for producing flame-retardant oriented strand boards with full eucalyptus wood scraps. The method comprises the working procedures of material preparation, drying, debarking and impurity removal, sorting and storage, respective gluing on surface layers and a core layer, graded laying, preheating pressing molding, sanding and finishing, and the like, wherein the surface layers are coated with isocyanate sawdust powder compound adhesive, the core layer is coated with flame-retardant compound urea-formaldehyde resin adhesive, core layer shavings are divided to form a three-layer structure which includes a core layer middle layer, a core layer upper surface layer and a core layer lower surface layer, vertical laying is adopted for the core layer middle layer, and transverse laying is adopted for the core layer upper surface layer, the core layer lower surface layer and the surface layers. According to the oriented strand boards produced with the method, the static bending intensity in the parallel direction ranges from 30 MPa to 40 MPa, the parallel elasticity modulus ranges from 4600 MPa to 4770 MPa, the vertical elasticity modulus ranges from 1500 MPa to 1780 MPa, the thickness swelling rate of water absorption of 24 hours ranges from 10% to 17%, the vertical nail-holding power is as high as 89000 N, and the dimensional stability and reliability are good. In addition, the oriented strand boards produced with the method further have the excellent effect of flame retardance.

Description

technical field [0001] The invention belongs to the field of artificial board manufacture, in particular to a method for producing flame-retardant oriented strand board from whole eucalyptus wood scraps. Background technique [0002] Oriented strand board is one of the new varieties of particle board. When the shavings are paved and formed, the upper and lower surface layers of the oriented strand board will arrange the rubber-mixed shavings longitudinally according to the fiber direction, and the core layer shavings will be arranged horizontally to form a three-layer structure board embryo, which is then hot-pressed into an oriented strand board. The particle shape of this particle board requires a larger aspect ratio, and the thickness is slightly thicker than that of ordinary particle board. [0003] Oriented strand board is a log that is peeled and cut into slices with a certain geometric shape along the direction of the wood grain. The size of the slices is usually 40-...

Claims

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Application Information

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IPC IPC(8): B27N3/02B27N3/10B27N3/14B27N3/00B27N3/18B27N1/02B27N1/00B27L11/02B27D1/04C09J161/32C09J103/10C09J11/04C09J11/06C09J11/08
CPCB27N3/02B27D1/04B27L11/02B27N1/00B27N1/0209B27N3/002B27N3/10B27N3/14B27N3/18C08L2201/02C08L2205/035C09J11/04C09J11/06C09J11/08C09J161/32C08L3/10C08L29/04C08L93/04C08K2003/026C08K5/03C08K3/2279
Inventor 陈正照
Owner 广西横县新威林板业有限公司
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