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Manufacturing method of crop stalk mixing manufactured formaldehyde-free artificial board

A manufacturing method and technology of wood-based panels, which are applied in the direction of flat products, household components, household appliances, etc., can solve the problems affecting the industrial application of wood-based panels, high cost, large amount of glue, etc. The effect of improving efficiency

Inactive Publication Date: 2018-12-21
上海世崛资产管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, wood-based panels made of wheat straw and corn stalks have been used, but such wood-based panels made of a single raw material have the problems of large amount of glue and high cost, which affects the large-scale industrial application of such wood-based panels

Method used

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  • Manufacturing method of crop stalk mixing manufactured formaldehyde-free artificial board
  • Manufacturing method of crop stalk mixing manufactured formaldehyde-free artificial board
  • Manufacturing method of crop stalk mixing manufactured formaldehyde-free artificial board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1: Crushing the kenaf stalks is coarsely crushed, and the coarsely crushed stalks are dried by a tumble dryer so that the moisture content is in the range of 9% to 17%. The dried kenaf stalk raw materials are then passed through air selection and other equipment to remove impurities such as iron and stones, and then enter the fine grinder to be crushed to a fineness of 50-70 mesh, and then sent to the surface layer silo. The kenaf stalks in the surface layer silo are weighed, and the moisture content is measured by a moisture tester, and then sent to the first mixer, and the glue spraying device is controlled by PLC to spray glue, and the spray glue is controlled according to the corresponding weight. For the amount of glue, spray 3% of the first polymerized MDI glue with a weight of 3% of the dry weight of the kenaf stalks and 3% of a formaldehyde-free modifier with a weight of 3% of the dry weight of the kenaf stalks and stir and mix.

[0031] Step 2: Simultaneou...

Embodiment 2

[0038] Step 1: Crushing the jute stalks is firstly subjected to coarse crushing, and the coarsely crushed stalks are dried by a tumble dryer so that the moisture content thereof is within the range of 9% to 17%. The dried jute stalk raw materials are then passed through wind selection and other equipment to remove impurities such as iron and stones, and then enter the fine grinder to be crushed to a fineness of 50-70 meshes, and then sent to the surface layer silo. The jute stalks in the surface layer silo are weighed, and the moisture content is measured by a moisture tester, and then sent to the first mixer, and the glue spraying device is controlled by PLC to spray glue, and the glue spray is controlled according to the corresponding weight Amount, spraying into weight is the first polymerization MDI glue of 5% of jute stalk dry weight and the weight is 4% formaldehyde-free modifying agent of jute stalk dry weight and stirs and mixes.

[0039] Step 2: Simultaneously with st...

Embodiment 3

[0046] Step 1: Crushing jute stalks, hemp stalks, and flax stalks is firstly subjected to coarse crushing, and the coarsely crushed stalks are dried by a drum dryer so that the moisture content is within the range of 9% to 17%. The dried mixed hemp stalk raw materials are then passed through wind selection and other equipment to remove impurities such as iron and stones, and then enter the fine grinder to be crushed to a fineness of 50-70 mesh, and then sent to the surface layer silo. The mixed hemp stalks in the surface layer silo are weighed, and the moisture content is measured by the moisture tester, and then sent to the first mixer, and the glue spraying device is controlled by PLC to spray glue, and the spray glue is controlled according to the corresponding weight. For the amount of glue, spray the first polymerized MDI glue with a weight of 8% of the dry weight of the mixed hemp stalk and the formaldehyde-free modifier with a weight of 5% of the dry weight of the mixed ...

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Abstract

The invention provides a manufacturing method of a crop stalk mixing manufactured formaldehyde-free artificial board. The manufacturing method of the crop stalk mixing manufactured formaldehyde-free artificial board is characterized by comprising the following steps that 1, hemp crop stalks are crushed, a first polymerized MDI adhesive which the weight accounts for 3%-8% of the hemp crop stalks and a formaldehyde-free modifier which the weight accounts for 3%-5% of the hemp crop stalks are added, and stirring and mixing are carried out; 2, cotton stalks are crushed, a second polymerized MDI glue which the weight accounts for 2%-6% of the cotton stalks and the formaldehyde-free modifier which the weight accounts for 2%-5% of the cotton stalks are added, and the stirring and the mixing arecarried out; 3, the cotton stalks which are stirred and mixed are used as a core layer, the hemp crop stalks serve as a surface layer, and layered laying are carried out to form a slab; and 4, compression molding is carried out on the slab, and post-treatment is carried out to obtain the artificial board.

Description

technical field [0001] The invention relates to the technical field of formaldehyde-free wood-based panels, in particular to a method for manufacturing formaldehyde-free wood-based panels with cotton stalks as the surface layer and hemp crop stalks as the core layer. Background technique [0002] Traditional wood-based panels are made of wood, such as plywood, fiberboard, particleboard, blockboard, oriented structure board, etc. With the development of the economy, people's demand for wood has increased sharply. Large-scale felling of trees has seriously damaged the ecological environment, and also led to a sharp decline in wood resources, affecting the source of raw materials for wood-based panels. For this reason, it is a kind of development trend to replace wood to make wood-based panels by seeking other natural fiber materials. At present, wood-based panels made of wheat straw and corn straw have been used, but the wood-based panels made of this single raw material have...

Claims

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Application Information

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IPC IPC(8): B27N3/14B27N3/18
CPCB27N3/14B27N3/18
Inventor 忻维钟陈冬冬
Owner 上海世崛资产管理有限公司
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