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Three-layer particle board and manufacture method for same

A technology of three-layer structure and manufacturing method, applied in the direction of manufacturing tools, flat products, layered products, etc., can solve problems such as affecting consumers' health and formaldehyde release, and achieve the effect of high environmental protection level and saving wood resources.

Inactive Publication Date: 2016-09-28
万华禾香生态科技股份有限公司
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AI Technical Summary

Problems solved by technology

Urea-formaldehyde resin is the most widely used adhesive in the manufacture of particleboard in my country. Particleboard products using urea-formaldehyde resin have the problem of formaldehyde release, which affects the health of consumers

Method used

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Experimental program
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Embodiment Construction

[0007] The proportions of wheat straw fiber used in the surface layer were 55%, 50%, 45%, 40%, 35% and 30%, respectively. The amount of isocyanate added is calculated as a percentage of the wet material, the surface layer is 5.1%, and the core layer is 3.6%. The moisture content of the surface wheat straw fibers was 12% after humidification, and the moisture content of the wood shavings of the core layer was 7.5% after humidification. Pavement format size 530mm×380mm, design density 0.67g / cm 3 , The design thickness is 20mm. The materials for the test were prepared in the following manner: the wood shavings were obtained by using a ring flaking machine, and the wood shavings for the test were obtained after removing the fine material 2.0mm large material. Mixing is carried out in the following way: the wheat straw fiber and wood shavings used in the test are dried to absolute dryness before use, and the mixing is carried out separately according to the difference between the...

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Abstract

The invention relates to a particle board with a three-layer structure and a manufacturing method, belonging to the field of artificial board manufacturing. The adhesive uses isocyanate, the upper and lower surface layers use wheat straw fiber, and the middle core layer uses wood shavings. When the proportion of wheat straw fiber is ≥ 35-45%, the performance indicators of the particleboard reach the best, fully meeting the requirements of GB / T 4897.3-2003 Require. The three-layer structure particle board produced by this method has no formaldehyde release, good environmental protection performance, uses part of crop straw to replace wood, saves wood resources, and has a positive guiding effect on the manufacture of three-layer structure particle board.

Description

Technical field [0001] The invention relates to a particle board with a three-layer structure using crop straw as a raw material and a manufacturing method thereof, belonging to the field of artificial board manufacturing. Background technique [0002] At present, my country's particleboard manufacturing is still dominated by wood raw materials. After the implementation of natural forest protection projects and timber logging restrictions, many enterprises have fallen into the plight of shortage of timber resources. my country is rich in crop straw resources, and the main chemical composition of straw is close to that of wood. If it is used to completely or partially replace wood resources to produce particleboard, it can greatly relieve the pressure of particleboard enterprises from raw materials and promote the sustainable development of the industry. This technology applies crop wheat straw to the manufacture of three-layer structure particleboard. Urea-formaldehyde res...

Claims

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Application Information

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IPC IPC(8): B27N3/00B27D1/04B32B9/02B32B9/04B32B21/10B32B7/12
CPCB27N3/002B27D1/04B32B7/12B32B9/02B32B9/042B32B21/10B32B2250/03B32B2601/00
Inventor 陈德旺王自栋刘志刚丁四泉蒋海东程云云蒲黄彪魏建立胡艳红孙应朋
Owner 万华禾香生态科技股份有限公司
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