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Modified wood, method of manufacturing same, and musical instrument

A manufacturing method and wood technology, which can be used in wood processing utensils, musical instruments, stringed instruments, etc., and can solve problems such as wood formaldehyde odor.

Pending Publication Date: 2020-10-30
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, since formaldehyde is used, there is a disadvantage that the modified wood has a smell of formaldehyde

Method used

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  • Modified wood, method of manufacturing same, and musical instrument
  • Modified wood, method of manufacturing same, and musical instrument
  • Modified wood, method of manufacturing same, and musical instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] "Example 1"

[0112] The sumac extract component is extracted from powdered sumac using hot water (extraction process). The mass of the solid component extracted from the sumac by performing the extraction process was 10% of the mass of the sumac.

[0113] Next, water was added to the hematoxylin solution obtained by performing the extraction step to obtain a hematoxylin solution containing 0.7% by mass of the hematoxylin extract component.

[0114] (wood)

[0115] As wood, prepared two (sample No.1, 2) L direction (fiber direction) length 180mm, R direction (radius direction) length 20mm, the maple wood (hereinafter referred to as maple ( L)).

[0116] Next, each maple (L) was heated in an oven at a temperature of 105° C. until the quality became stable and completely dry, and the mass was measured (before the treatment in Table 1). Each maple wood (L) in an absolutely dry state is subjected to humidity-conditioning treatment at a temperature of 22°C and a relative...

Embodiment 2

[0130] "Example 2"

[0131] As wood, except for using two sheets (sample Nos. 1, 2) of maple (hereinafter referred to as maple ( Except R)), the modified wood of Example 2 was obtained in the same manner as in Example 1.

Embodiment 3

[0132] "Example 3"

[0133] The hematoxylin solution obtained by carrying out the extraction step in the same manner as in Example 1 was heated to evaporate the water contained in the hematoxylin solution to obtain a hematoxylin solution containing 1.8% by mass of the hematoxylin extract component. Modified wood of Example 3 was obtained in the same manner as in Example 1, except that a hematoxylin solution containing 1.8% by mass of the obtained hematoxylin extract component was used.

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Abstract

Provided are: a modified wood material which is impregnated with a modification component that can be easily produced without purification and has low internal loss; and a musical instrument which uses the modified wood material. A modified wood includes: a wood material; and a sappanwood extract component impregnated in the wood material. Preferably, the mass of the sappanwood extraction component accounts for 0.5-10% of the mass of the modified wood.

Description

technical field [0001] The present invention relates to modified wood, a manufacturing method of modified wood, and a musical instrument. Background technique [0002] Wood is used in musical instruments such as stringed instruments, percussion instruments, wind instruments, etc. As wood used for musical instruments, it is preferable to use wood with low internal loss (tan δ) in order to obtain good sound quality. However, as a material for musical instruments, wood with a suitable low internal loss is relatively rare. Therefore, it is required to modify the wood so that the internal loss is reduced. [0003] Conventionally, as a method of reducing internal loss of wood, there is a method of modifying wood using resorcinol and formaldehyde. However, in this method, since formaldehyde is used, there is a disadvantage that the modified wood has a formaldehyde smell. [0004] As a method of reducing internal loss of wood without using formaldehyde, there is a method of modi...

Claims

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Application Information

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IPC IPC(8): B27K3/34B27K5/00B27K3/08G10D3/22G10D13/24G10D9/08G10C9/00
CPCB27K3/34B27K5/0065B27K5/001B27K3/08B27K5/007G10D3/22G10D13/24G10D9/08G10C9/00G10D1/08B27K3/38
Inventor 平工达也
Owner YAMAHA CORP
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