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Production method of weather-proof, low-aldehyde and medium-density fiber office table special board

A production method and medium-density technology, applied in the field of wood-based panels, can solve the problems of bursting, low density of low-density fiberboard, difficult processing, etc.

Inactive Publication Date: 2019-01-15
广西横州丽冠环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-density fiberboard has high density, is difficult to process, and is easy to burst when nailing and installing accessories; while low-density fiberboard has low density, large gaps between wood fibers, and is easy to absorb water and swell, causing the surface covering to fall off or even the board to disintegrate. It is used less in office furniture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A production method of a weather-resistant low-formaldehyde type medium density fiber desk special board, which is characterized in that: the specific steps are:

[0055] (1) Raw material pretreatment: mix eucalyptus leftovers and other miscellaneous woods at a weight ratio of 1:0.5, and cut into pieces with a length of 4 to 5 cm and a width of 0.5 to 1 cm;

[0056] (2) Screening: screening the wood fragments obtained above to remove silt and fines with a particle size of less than 0.2cm, and remove iron by strong magnetic attraction;

[0057] (3) Steaming and softening: transport the wood chips into the cooking tank, add appropriate amount of water to soak for 30 minutes, and then pass steam into the cooking tank, keep the pressure in the tank at 0.15Mpa, cook for 4 minutes, and obtain a cork with 85% moisture content after cooking sheet;

[0058] (4) Grinding: The cork flakes obtained by steaming are transported to a refiner for grinding at a speed of 3000r / min and grinding f...

Embodiment 2

[0076] A production method of a weather-resistant low-formaldehyde type medium density fiber desk special board, which is characterized in that: the specific steps are:

[0077] (1) Raw material pretreatment: mix eucalyptus scraps with other miscellaneous woods at a weight ratio of 1:0.4 and cut them into pieces with a length of 4 to 5 cm and a width of 0.5 to 1 cm;

[0078] (2) Screening: screening the wood fragments obtained above to remove silt and fines with a particle size of less than 0.2cm, and remove iron by strong magnetic attraction;

[0079] (3) Steaming and softening: transport the wood chips into the cooking tank, add appropriate amount of water to soak for 20 minutes, and then pass steam into the cooking tank, keep the pressure in the tank at 0.18Mpa, cook for 3 minutes, and obtain a cork with 80% water content after cooking sheet;

[0080] (4) Grinding: The cork flakes obtained by cooking are transported to a refiner for grinding at a speed of 2500r / min and grinding for...

Embodiment 3

[0098] A production method of a weather-resistant low-formaldehyde type medium density fiber desk special board, which is characterized in that: the specific steps are:

[0099] (1) Raw material pretreatment: mix eucalyptus scraps with other miscellaneous woods at a weight ratio of 1:0.4, and cut into pieces with a length of 4 to 5 cm and a width of 0.5 to 0.8 cm;

[0100] (2) Screening: screening the wood fragments obtained above to remove silt and fines with a particle size of less than 0.2cm, and remove iron by strong magnetic attraction;

[0101] (3) Steaming and softening: transport the wood chips into the cooking tank, add appropriate amount of water to soak for 15 minutes, and then pass steam into the cooking tank, keep the pressure in the tank at 0.20Mpa, cook for 2 minutes, and obtain cork with 75% water content after cooking sheet;

[0102] (4) Grinding: The cork chips obtained by steaming are transported to a refiner for grinding at a speed of 3000r / min and grinding for 5 m...

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Abstract

The invention discloses a production method of a weather-proof, low-aldehyde and medium-density fiber office table special board. The method comprises the following steps: (1) pretreating raw materials, (2) screening, (3) cooking and softening, (4) grinding, (5) sizing and drying, (6) pre-pressing, (7) hot pressing, (8) sawing and sanding, (9) veneering hot pressing, and (10) edge cutting. In thisway, a finished product is obtained. According to the invention, eucalyptus barks, branches and waste leftover materials left in the manufacturing process are taken as main raw materials. Meanwhile,other miscellaneous wood is added, so that the full and effective utilization of wood resources can be realized. The modified paraffin and the weather-proof urea-formaldehyde resin adhesive are added,and the production process is strictly controlled. As a result, the waterproof and weather-proof performance is greatly improved and the board is low in formaldehyde content. The prepared medium-density fiber wardrobe special board is environment-friendly, low in formaldehyde content and excellent in weather resistance. Therefore, the board is a safe, environment-friendly and low-formaldehyde-content office table special board.

Description

Technical field [0001] The invention belongs to the technical field of wood-based panels, in particular to a production method of a weather-resistant low-formaldehyde type medium-density fiber desk special board. Background technique [0002] Artificial board is a board or molded product made of wood or other non-wood plants as raw materials and separated into various unit materials by certain mechanical processing, with or without adhesives and other additives. It mainly includes three categories of products: plywood, particle board (particle) and fiberboard, with hundreds of extended products and deep-processed products. The plywood is made by steaming and softening the logs, rotating them into large sheets, then placing the wood fibers perpendicular to each other, bonding them with a good water-resistant synthetic resin glue, and then pressing, drying, sawing, and surface trimming. Of plates. The number of layers is an odd number, generally 3 to 13 layers, which are called t...

Claims

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Application Information

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IPC IPC(8): B27N3/12B27N3/18B27N3/20B27N1/02B27L11/08
CPCB27N3/12B27L11/08B27N1/0209B27N3/002B27N3/18B27N3/183B27N3/203
Inventor 刘伟
Owner 广西横州丽冠环保材料有限公司
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