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Shaving board making process

A particleboard and wood technology, applied in the field of particleboard manufacturing, can solve the problems of high sizing amount and increased production cost, and achieve the effects of reducing formaldehyde emission, extending the industrial chain and reducing costs

Inactive Publication Date: 2008-03-26
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this traditional method is that the amount of sizing is generally high, reaching 11% to 14%, and the amount of formaldehyde released exceeds 30mg / 100g. In order to reduce the amount of sizing and reduce the amount of formaldehyde released, it is better to use modified urea-formaldehyde resin adhesive Production of particleboard that meets the requirements of national standards, but the use of modified urea-formaldehyde resin adhesives will greatly increase production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The method for manufacturing particle board of the present invention, comprises the steps:

[0022] (1) Manufacture of wood scraps from Castanopsis coronis small-diameter wood;

[0023] (2) 0.3m of wood scraps obtained in step (1) 3 1m 3 In a pot with industrial water, heat to 60°C and cook for 120 minutes, so that the quality of the extracted wood extract accounts for 3-4.5% of the total wood scrap;

[0024] (3) drying and sorting the wood scraps processed in step (2);

[0025] (4) Mix urea-formaldehyde resin adhesive to the sorted wood scraps, and the sizing amount is 7%;

[0026] (5) slab paving, pre-pressing, and hot-pressing forming to obtain the particleboard of the present invention.

[0027] After determination, the formaldehyde release amount in the particleboard of the present invention is only 7.9mg / 100g, and the strength reaches or exceeds the requirements of the national standard GB / T 4897-2003 (the physical and mechanical performance index of the parti...

Embodiment 2

[0029] The method for manufacturing particle board of the present invention, comprises the steps:

[0030] (1) use the Eucalyptus eucalyptus wood as raw material to manufacture wood scraps;

[0031] (2) 0.7m of the wood scraps obtained in step (1) 3 1m 3 In a pot with industrial water, heat to 100°C and cook for 20 minutes, so that the quality of the extracted wood extract accounts for 3-4.5% of the total wood scrap;

[0032] (3) drying and sorting the wood scraps processed in step (2);

[0033] (4) Mix urea-formaldehyde resin adhesive to the sorted wood scraps, and the sizing amount is 6%;

[0034] (5) slab paving, pre-pressing, and hot-pressing forming to obtain the particleboard of the present invention.

[0035] After measurement, the amount of formaldehyde released in the particleboard of the present invention is only 7.2mg / 100g, and the strength reaches or exceeds the requirements of the national standard GB / T 4897-2003 (physical and mechanical performance indicators...

Embodiment 3

[0037] The method for manufacturing particle board of the present invention, comprises the steps:

[0038] (1) Using masson pine small-diameter wood as raw material to produce wood scraps;

[0039] (2) 0.1m of the wood scraps obtained in step (1) 3 1m 3 In a pot with industrial water, heat to 80°C and cook for 70 minutes to realize that the quality of the extracted wood extract accounts for 3-4.5% of the total wood scrap;

[0040] (3) drying and sorting the wood scraps processed in step (2);

[0041] (4) Mix the modified urea-formaldehyde resin adhesive to the sorted wood scraps, and the sizing amount is 8%;

[0042] (5) slab paving, pre-pressing, and hot-pressing forming to obtain the particleboard of the present invention.

[0043] After determination, the formaldehyde emission in the particleboard of the present invention is only 6.9mg / 100g, and the strength reaches or exceeds the requirements of the national standard GB / T 4897-2003 (the physical and mechanical performa...

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Abstract

The present invention is one improved shaving board making process, which, compared with available shaving board making process, has one crushed timber extracting treatment step and a glue applying amount reduced to 6-8 %. During the process, urea-formaldehyde resin adhesive or modified urea-formaldehyde resin adhesive in 6-8 % is applied to result in formaldehyde releasing amount of the shaving board lower than 9 mg / 100 g. The improved shaving board making process can produce shaving board with low production cost, low formaldehyde releasing amount and other advantages.

Description

technical field [0001] The invention relates to a method for manufacturing particle boards, in particular to a method for manufacturing particle boards using a water extraction process. Background technique [0002] With the recovery of the economy in Southeast Asia, the consumption of wood products is on the rise. The development of western China, the rise of urban agglomerations in the Central Plains, the promotion of small town construction in coastal provinces of China, the implementation of the Three Gorges Project and the South-to-North Water Diversion, and the expansion of higher education , a large number of agricultural population will be stationed in cities and towns, the construction industry will develop extremely fast, and the consumption of wood products such as furniture and floors will rise rapidly. In particular, the development of China's rural economy and the increasing affluence of farmers have also led to a linear increase in furniture consumption. In v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27L11/02B27K5/00B27N1/02B27N3/10
Inventor 李凯夫彭万喜丁明清张丽丽
Owner SOUTH CHINA AGRI UNIV
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