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Method for producing xylon molded body and xylon molded body

A manufacturing method and a technology for a formed body, which are applied in the directions of manufacturing tools, wood compression, humidity-conditioning wood, etc., to achieve the effects of short processing time, low thermal conductivity, and shortened time.

Inactive Publication Date: 2009-05-13
中日精工株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, when cooking wood materials, wood will decompose to produce formic acid or acetic acid, etc., which will emit a strong smell when heated and pressurized, so the problem of this smell must be solved as a product

Method used

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  • Method for producing xylon molded body and xylon molded body
  • Method for producing xylon molded body and xylon molded body
  • Method for producing xylon molded body and xylon molded body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] First, sawdust produced when sawing Japanese cedar at a wood processing factory is prepared as a raw material—wood powder for wooden materials. Adjust the moisture content of the woody material to 12%. Subsequently, after retorting at 215° C. for 6 minutes, drying was performed so that the water content of the wood flour was 8%. Subsequently, the wood flour was filled into a forming mold with a diameter of 140 mm, and compression-molded at room temperature under a pressure of 20 MPa for 30 seconds to obtain a preform. The preform was again placed in a φ140mm forming mold, and compression-molded under the condition of 30MPa for 2 minutes. The surface of the wood molded body obtained through the above process was free from stains due to gas generation, and was a glossy molded body. The 24-hour immersion water absorption rate is also below 1%, and there is no smell of organic acid.

Embodiment 2

[0111] Shavings of hinoki wood are prepared as a wood material as a raw material for moldings. Adjust the moisture content of the woody material to 12%. Subsequently, after retorting at 215° C. for 6 minutes, it was filled into a φ140 mm molding die, and compression-molded at room temperature under a pressure of 30 MPa for 3 minutes to obtain a preform. The preform was again placed in a forming mold with a diameter of 140 mm, and compression-molded at 200° C. and 30 MPa for 2 minutes. Also in this case, a molded article with a low water absorption rate and very little generation of organic acid can be obtained.

experiment example 1

[0115] In order to verify the effects of the present invention, the odors of the wood shaped articles obtained in Examples 1, 2 and Comparative Example 1 were measured. Specifically, the emitted amount of an organic acid which is a source of an odor was measured. Table 1 shows the emission amount μg / L of acetic acid and formic acid in each of the wooden shaped articles prepared in Examples 1, 2 and Comparative Example 1.

[0116] Table 1

[0117] Acetic acid (μg / L) Formic acid (μg / L) Example 1 <0.5

0.6 Example 2 <0.5

0.8 comparative example 9.2 10.2

[0118] As can be seen from Table 1, according to Examples 1 and 2 in which the moisture content of the wood material was adjusted to 8% and 12% respectively before the cooking process, and then molded, a wood molded body with little odor can be obtained due to the small amount of organic acid. Contrary to this time, in Comparative Example 1 in which drying was not performed before reto...

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PUM

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Abstract

The invention relates to a woody material resinification, especially to a method for manufacturing a woody formed article and the woody formed article which is characterized by a reduced odor and a low water absorption ratio of a woody material resinification topic. The invention relates to the method for manufacturing the woody formed article which shows an adhesivity or a thermal flow property in the woody article and the woody formed article. After the moisture percentage of the woody material is regulated, the cooking treatment to a woody tissue by contacting a heated aqueous vapor can reduce the water absorption ratio and the odor from a formic acid or an acetic acid to minimum.

Description

technical field [0001] The present invention relates to resinization of woody materials, and relates to a method for producing a wooden molded article and a woody molded article characterized by reducing odor and reducing water absorption, which are problems of resinification of woody materials. [0002] Specifically, the present invention relates to a wood-shaped product obtained by shaping the wood material by contacting the wood tissue with heated water vapor after adjusting the moisture content of the wood material so that the wood exhibits adhesive properties and thermal fluidity. A production method and its molded article; a production method and a wood molded article which have a low water absorption rate and have an odor from organic acids such as formic acid and acetic acid, or formaldehyde which is an organic compound and which emits very little. Background technique [0003] Attempts have been made so far to utilize wood as an alternative material such as plastic ...

Claims

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Application Information

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IPC IPC(8): B27M1/08B27K1/00B27M1/02B27N3/00B27N5/00B27K3/02
Inventor 近藤泰人村下卓也
Owner 中日精工株式会社
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