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Surface infiltrated wood fiber board and production method thereof

A technology of wood fiber board and surface infiltration, applied in the field of wood fiber board, can solve the problem of no profit space, etc., and achieve the effects of reduced moisture content, complete shape, and small internal friction.

Inactive Publication Date: 2011-09-07
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the problem of sewage treatment in wet production, there is no room for profit under the pressure of environmental protection, and production has been strictly prohibited in many places

Method used

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  • Surface infiltrated wood fiber board and production method thereof
  • Surface infiltrated wood fiber board and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Feeding ingredients and parts by weight: 85 parts of wood fiber, 30 parts of water, 3 parts of phenolic resin glue and 2 parts of ferrous ammonium phosphate.

[0036] 2. Production method:

[0037] The raw wood is cut into thin slices with a length of 20 mm, a thickness of 4 mm, and a width of 20 mm with a chipper, and a 20-mesh vibrating screen is used to remove unqualified chips. Wood chips are cooked with saturated steam, the steam pressure is 0.60MPa, and the cooking time is 5 minutes. The steamed wood chips are separated into wood fibers with a heat grinder. Control the temperature at 250°C with a pipeline airflow dryer for 8 seconds, and the moisture content of the dry wood fiber is 10%. The dry wood fiber is laid on the slab conveyor by air-laying machine. Add phenolic resin glue and ferrous ammonium phosphate into the aqueous solution, atomize and spray the aqueous solution onto the surface of the wood fiber slab for infiltration. The wood fiber slab that...

Embodiment 2

[0040] 1. Feeding ingredients and parts by weight: 85 parts of wood fiber, 27 parts of water and 4 parts of phenolic resin glue.

[0041] 2. Production method:

[0042]The raw wood is cut into thin slices with a length of 15 mm, a thickness of 4 mm, and a width of 15 mm with a chipper, and a 10-mesh vibrating screen is used to remove unqualified debris. Wood chips are cooked with saturated steam, the steam pressure is 0.55MPa, and the cooking time is 5 minutes. The steamed wood chips are separated into wood fibers with a heat grinder. Control the temperature at 280°C with a pipeline airflow dryer for 6 seconds, and the moisture content of the dry wood fiber is 8%. The dry wood fiber is laid on the slab conveyor by a mechanical laying machine. The phenolic resin glue is added into the aqueous solution, and the aqueous solution is atomized and sprayed onto the surface of the wood fiber slab for infiltration. The wood fiber slab that has been soaked on the surface is pre-pres...

Embodiment 3

[0045] 1. Feeding ingredients and parts by weight: 87 parts of wood fiber, 34 parts of water and 3 parts of ferrous ammonium phosphate.

[0046] 2. Production method:

[0047] The raw wood is cut into thin slices with a length of 25 mm, a thickness of 2 mm, and a width of 20 mm with a chipper, and a 20-mesh vibrating screen is used to remove unqualified debris. Wood chips are cooked with saturated steam, the steam pressure is 0.68MPa, and the cooking time is 3 minutes. The steamed wood chips are separated into wood fibers with a heat grinder. Control the temperature at 180°C with a pipeline airflow dryer for 10 seconds, and the moisture content of the dry wood fiber is 9%. The dry wood fiber is laid on the slab conveyor by air-laying machine. Add ferrous ammonium phosphate into the aqueous solution, atomize and spray the aqueous solution onto the surface of the wood fiber slab for infiltration. The wood fiber slab that has been soaked on the surface is pre-pressed, the tem...

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Abstract

The invention discloses a surface infiltrated wood fiber board and a production method thereof. Composite design is performed by adopting the advantages of dry and wet production processes of the wood fiber board; and the method has the following flows of: chipping, screening, digestion, hot grinding, separation, drying, air spreading, surface infiltration, pre-pressing, hot pressing molding, edging, inspection and formation of a finished product. In the digestion, the pressure of steam is 0.55 to 0.68MPa, and the time is 3 to 5 minutes; in the drying, the temperature of airflow is 180 to 280 DEG C, and the time is 5 to 10 seconds; and in the hot pressing molding, the temperature is 190 to 230 DEG C, the pressure is 3.5 to 6.5MPa, and the time is 30 to 50s / mm. The method produces the waterproof, flame-retardant and common hard fiber board; in the production process, the energy consumption is low, and no waste water is discharged; the wood fiber board has high strength and good uniformity; the quality of the wood fiber board reaches the standards of GB12626.1-12626.9-90 Hard Fiber Board; a brand-new method is provided for the production of the wood fiber board; and the method has good economic benefit and social benefit.

Description

technical field [0001] The invention relates to the technical field of wood fiber boards, in particular to a surface impregnated wood fiber board and a production method thereof. Background technique [0002] Wood fiberboard is a wood-based panel made of interwoven wood fibers and using its inherent adhesive properties. The basic unit of fiberboard is separated wood fibers or fiber bundles. [0003] The production process of wood fiberboard is divided into wet method, dry method and semi-dry method. The wet production process uses water as the carrier of fiber transportation. Its mechanism is to make use of the friction force generated by the interweaving of fibers, the bonding force generated between the surface molecules of the fibers and the cementing force generated by the fiber content to make a certain strength. fiberboard. The dry production process uses air as the fiber transport carrier. The fiber preparation is a one-time separation method. Generally, it does not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/04B27N3/08B27K3/52
Inventor 陆瑜陈文军胡礼伟
Owner GUANGXI UNIV
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