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Manufacturing method cotton straw composite artificial board

A cotton straw and manufacturing method technology, applied in the direction of manufacturing tools, flat products, pretreatment of molding materials, etc., can solve the problems of easy fire sizing and paving, difficulties, and blockage of equipment transportation pipelines, so as to alleviate the shortage of timber resources, The effect of reducing manufacturing costs and maintaining ecological balance

Inactive Publication Date: 2015-02-25
蒋华
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But then they stopped production one after another, and changed to use wood as raw material again, mainly because the related technology did not solve the problem.
There are two main technical problems: one is that the sheath of cotton stalks containing a large amount of bast fibers is not easy to cut off when planing and shavings to form hemp-like fiber clusters, which not only block equipment and transportation pipelines, but are also prone to fire and sizing. Second, the water absorption thickness expansion rate of particleboard and fiberboard produced from cotton straw is difficult to meet the requirements. The above two main technical problems have resulted in no wood-based panel enterprise using cotton straw as raw material in my country.

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0024] The first embodiment of the present invention is a kind of manufacturing method of particleboard:

[0025] 1. Cutting off the cotton stalks: After controlling the moisture content of the cotton stalks at 18-20%, cut them into small sections with a length of 1.5-2.5 cm for later use.

[0026] 2. Shavings: The cotton straw section with a moisture content of 18-20% is made into shavings with a ring-type flaker or a hammer mill. The length is 3-25mm, the width is 1-10mm, and the thickness is 3- 5mm.

[0027] 3. Drying: Airflow drying method and drum dryer are adopted to dry the shavings of cotton stalks, the drying temperature range is 90-150°C, and the final moisture content of drying is 3-5%.

[0028] 4. Screening: Send the dried cotton stalks into the dry silo, and the dried wood shavings can be evenly mixed with the cotton stalks and shavings in a ratio of 1:3-3:1 as required.

[0029] 5. Sizing: Evenly sizing and gluing the mixture of cotton stalks and wood shavings ...

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Abstract

The invention provides a manufacturing method of a cotton straw composite artificial board. The method has the advantages that the homogeneous particleboard and fiberboard of the composite artificial board are produced by using cotton straw as main raw material, timber as auxiliary raw material and urea resin or melamine modified urea resin as adhesives, the cotton straw does not form hemp-shaped fiber agglomerates during board manufacturing, and the water absorption thickness swelling rate of the manufactured particleboard and fiberboard meets the requirements.

Description

technical field [0001] The invention relates to a method for manufacturing a cotton straw composite wood-based panel. Background technique [0002] Cotton stalks are the residues of cotton production. About 20 million tons of cotton stalks are produced in my country every year. At present, they are mainly used as fuel, and a large amount of cotton stalks have not been efficiently utilized. Cotton straw is mainly composed of cellulose, hemicellulose and lignin, similar to the chemical composition of hardwood. Due to the current shortage of wood resources in our country, the raw materials for the production of fiberboard and particleboard in the wood-based panel industry are in short supply. Therefore, if cotton straw can be used in the production of wood-based panels, it will not only solve the problem of shortage of wood raw material resources in the wood-based panel industry in our country, but also provide cotton. The high-efficiency utilization of straw has found a way o...

Claims

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Application Information

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IPC IPC(8): B27N3/02B27N3/10B27N1/00B27N1/02
CPCB27N3/02B27N1/00B27N1/02B27N3/10
Inventor 蒋华
Owner 蒋华