Bamboo-willow scrimber manufacturing process

A manufacturing process and recombined wood technology, applied in the field of bamboo and willow recombined wood manufacturing technology, can solve the problems of rare recombined wood products, long production cycle, unstable product performance, etc., to promote extensive planting, increase demand, and increase raw materials Effect of category selection range

Inactive Publication Date: 2014-03-05
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The development of recombined wood has a history of more than 20 years. However, recombined wood products are rare in the market, which means that there are still bottlenecks in the marketization and commercialization of recombined wood technology.
The researchers of the present invention found in the research that the main problems of the current recombinant wood technology are: (1) product quality problems, such as unstable product performance, easy to mildew, easy to crack, etc., (2) production cost problems, such as long production cycle , high energy consumption, etc.
[0007] At present, there is no recombined wood manufacturing process specially for bamboo willow, and the researchers of the present invention have found in practical research that it is impossible to make bamboo willow into a recombined wood with satisfactory performance by directly applying various existing recombined wood manufacturing processes. For example, the Chinese invention patent of application number 200810041523.5 authorized announcement number CN101642924B (name: a recombined wood and its manufacturing method), the Chinese invention patent of application number 200810114331.2 authorized announcement number CN101357470B (name: a recombined wood and its manufacturing method) , application number 201110290903.4 Chinese invention patent application with application publication number CN102371608A (name: a manufacturing method for outdoor recombined bamboo flooring), application number 201210439930.8 Chinese invention patent application with application publication number CN102941612A (name: a manufacturing method for recombined bamboo and wood decorative materials method), etc.

Method used

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  • Bamboo-willow scrimber manufacturing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]The bamboo willow recombined wood manufacturing process of the present embodiment comprises the following steps:

[0034] The first step is to collect bamboo and willow branches and small-diameter grades. After removing the bark, send them to the wood longitudinal rolling and cutting machine to make wood bundles, and dry them at 102°C until the moisture content is 5%;

[0035] The second step is to immerse it in a water-soluble phenolic resin adhesive with a solid content of 24%, and the immersion time is 15s, then first dry the glued wood bundles to a moisture content of 20%, and then place the wood bundles in Dry at 40°C-50°C for 40-70min, so that the moisture content of wood bundles is 9-11%;

[0036] The third step is to pave evenly into slabs along the direction of the grain, and bind the bundles after directional paving;

[0037] The fourth step is to send the paved slab into the press for cold pressing and shaping for 1min, and the cold pressing pressure is 2.0MP...

Embodiment 2

[0042] The bamboo willow recombined wood manufacturing process of the present embodiment comprises the following steps:

[0043] The first step is to collect bamboo and willow branches and small-diameter grades, remove the bark, and send them to the longitudinal wood rolling and cutting machine to make wood bundles, and dry them at 115°C until the moisture content is 4%;

[0044] The second step is to immerse it in a water-soluble phenolic resin adhesive with a solid content of 23.5%, and the immersion time is 25s, then first dry the glued wood bundles to a moisture content of 19%, and then place the wood bundles in Dry at 45°C for 60 minutes to make the moisture content of wood bundles 10%;

[0045] The third step is to pave evenly into slabs along the direction of the grain, and bind the bundles after directional paving;

[0046] The fourth step is to send the paved slab into the press for cold pressing and shaping for 1min, and the cold pressing pressure is 2.0MPa;

[004...

Embodiment 3

[0051] The bamboo willow recombined wood manufacturing process of the present embodiment comprises the following steps:

[0052] The first step is to collect bamboo and willow branches and small-diameter grades. After removing the bark, send them to the wood longitudinal rolling and cutting machine to make wood bundles, and dry them at 108°C until the moisture content is 7%;

[0053] The second step is to immerse it in a water-soluble phenolic resin adhesive with a solid content of 22%, and the immersion time is 20s, and then naturally dry the glued wood bundles to a moisture content of 18%;

[0054] The third step is to pave evenly into slabs along the direction of the grain, and bind the bundles after directional paving;

[0055] The fourth step is to send the paved slab into the press for cold pressing and shaping for 3 minutes, and the cold pressing pressure is 3.0MPa;

[0056] Step 5: Put it in a flat-panel hot press for hot-press curing. The hot-press time is 55s / mm, th...

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Abstract

The invention relates to a bamboo-willow scrimber manufacturing process which comprises the steps that skin of brush wood and small-diameter-class wood of bamboo and willow is removed, and the brush wood and the small-diameter-class wood are slit in the longitudinal direction to make wood bundles; the wood bundles are dried to be with the water content of 4-7%; the wood bundles are soaked in water-soluble phenolic aldehyde resin tackiness agents with the solid content of 21-24% for 15-25 seconds; the wood bundles are dried; the wood bundles are fixed in a paving mode; the wood bundles are subjected to cold-pressing shaping; the wood bundles are subjected to hot-pressing solidification; bamboo-willow scrimber with the density of 0.7-1.0g / cm<3> is obtained after postprocessing. The bamboo-willow scrimber manufacturing process can be used for manufacturing bamboo-willow scrimber with satisfying performance.

Description

technical field [0001] The invention relates to a manufacturing process of bamboo and willow recombined wood, which is specially aimed at the small-diameter grade and branch wood of bamboo and willow, and the obtained recombined wood has excellent performance. Background technique [0002] With the gradual reduction of global natural forest resources and the increasing emphasis on ecological environment protection in various countries, the contradiction between the growing timber demand and the relative shortage of resources is getting deeper and deeper, and making full use of small-diameter grade timber and branch timber has become a solution One of the important ways of this contradiction. [0003] In 1973, John Douglas Coleman, a scientist at the Australian Commonwealth Institute of Science and Industry, put forward the technical idea of ​​"Scrimber or valwood": rolling twigs, small-diameter grades and other raw materials into a wood with no vertical fracture and horizont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/04B27K3/02
Inventor 邓玉和王新洲吴金绒侯天宇陈骁轶董葛平
Owner NANJING FORESTRY UNIV
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