JPH08224709A - Qualitative modification of wood - Google Patents
Qualitative modification of woodInfo
- Publication number
- JPH08224709A JPH08224709A JP34370795A JP34370795A JPH08224709A JP H08224709 A JPH08224709 A JP H08224709A JP 34370795 A JP34370795 A JP 34370795A JP 34370795 A JP34370795 A JP 34370795A JP H08224709 A JPH08224709 A JP H08224709A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- compression
- molded
- vapor atmosphere
- steam atmosphere
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002023 wood Substances 0.000 title claims abstract description 43
- 230000004048 modification Effects 0.000 title 1
- 238000012986 modification Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000000748 compression moulding Methods 0.000 abstract description 2
- 239000011122 softwood Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 241000218645 Cedrus Species 0.000 description 4
- 241000233866 Fungi Species 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 3
- 229930003836 cresol Natural products 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 241000218691 Cupressaceae Species 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 240000000599 Lentinula edodes Species 0.000 description 1
- 235000001603 Pleurotus ostreatus Nutrition 0.000 description 1
- 240000001462 Pleurotus ostreatus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical class O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、木材の改質処理方
法に関するもので、杉等の軟質材の堅牢化を図るととも
に、間伐材等の小径木や湾曲材の非切削による柱状成形
加工を図る場合に使用される。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for modifying a wood material, which is intended to solidify a soft material such as cedar, and to perform columnar molding by non-cutting a small-diameter tree such as a thinning material or a curved material Used when trying.
【０００２】[0002]
【従来の技術】杉等の軟質材は、建築材料として多用さ
れてはいるものの、堅牢度が低いために、使用される場
合が限定されていた。また、杉、檜等の成育過程におい
て除去される間伐材は、小径木であり、極めて軟らか
く、また湾曲しているため柱材などとして殆ど利用でき
ないのが現状である。2. Description of the Related Art Although soft materials such as cedar are widely used as building materials, their use is limited because of their low fastness. In addition, the thinned wood that is removed during the growth process of cedar, cypress, etc. is a small diameter tree, and it is extremely soft and curved, so that it cannot be used as a pillar material at present.
【０００３】これらの木材については、木質の強化を図
るための研究、例えば、マイクロ波による圧密化などの
研究が行われているが、その圧密による変形を固定する
効果的な方法が未だ見出されていない。また、マイクロ
波では厚肉の木材を処理することが困難であり、また、
コストが高くつく。[0003] Regarding these woods, studies for strengthening the wood quality, for example, consolidation by microwaves have been conducted, but an effective method for fixing the deformation due to the consolidation has not yet been found. It has not been. Also, it is difficult to process thick wood with microwaves, and
High cost.
【０００４】[0004]
【発明が解決しようとする課題】本発明の目的は、木材
の改質処理方法において、圧密化により木材の特性の向
上を図り、かつ、圧縮成形された状態を固定する方法を
提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for improving the properties of wood by consolidating and fixing the compression-molded state in a method for modifying wood. is there.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するた
め、本発明では、木材を５〜２５kgf/cm2の高温高圧の
水蒸気雰囲気内に置いて軟化させた後、上記水蒸気雰囲
気内で、上記木材を機械的に圧縮することにより、体積
で１／２〜１／３の所望の形状に圧縮成形するとともに
その変形を固定するようにしたものである。In order to solve the above-mentioned problems, in the present invention, after the wood is placed in a steam atmosphere of high temperature and high pressure of 5 to 25 kgf / cm 2 to be softened, and then in the steam atmosphere, By mechanically compressing wood, it is compression-molded into a desired shape having a volume of 1/2 to 1/3 and its deformation is fixed.
【０００６】上記の各工程を同一の圧力容器内で行うこ
とにより１段階で圧縮成形処理および固定化を実行する
ことができるが、軟化させた木材を常圧下で圧縮成形
し、圧縮成形した木材をそのままの状態で再び高温高圧
の水蒸気雰囲気内に置いて変形を固定するようにしても
よい。The compression molding treatment and the immobilization can be carried out in one step by carrying out the above-mentioned steps in the same pressure vessel. Alternatively, the deformation may be fixed by placing it in the steam atmosphere of high temperature and high pressure as it is.
【０００７】木材を５〜２５kgf/cm2の水蒸気雰囲気内
に置くと木材は水蒸気を吸収して木材自体の温度が上昇
し（数分乃至数十分放置することによって木材の温度が
１３０〜２００℃となる）、木材が軟化すると共に、木
質の分解が徐々に進行する。When wood is placed in a water vapor atmosphere of 5 to 25 kgf / cm 2 , the wood absorbs water vapor and the temperature of the wood itself rises (the temperature of the wood rises to 130 to 200 when left for several minutes to several tens of minutes). As the wood softens, decomposition of wood gradually progresses.
【０００８】この状態で木材を機械的に圧縮することに
より、体積で１／２〜１／３程度に圧縮され、木材中に
形成されている微細な空洞部分が小さくなって硬く、か
つ、強い木質となる。By mechanically compressing the wood in this state, it is compressed to about 1/2 to 1/3 in volume, and the minute hollow portions formed in the wood are reduced in size and are hard and strong. It becomes woody.
【０００９】同時に、木質に含まれるヘミセルロースと
リグニンが部分的に解重合し、その結果フェノール化合
物とフルフラール化合物等の化学物質が生成される。こ
れらの化合物は茸類等の坦子菌の成育を阻害する性質を
持っている。これによって木材腐朽菌に対する耐久性を
向上させることができる。At the same time, hemicellulose and lignin contained in wood are partially depolymerized, and as a result, chemical substances such as phenol compounds and furfural compounds are produced. These compounds have the property of inhibiting the growth of carrier fungi such as mushrooms. This can improve the durability against wood-destroying fungi.
【００１０】水蒸気雰囲気内において圧縮することが困
難な場合には、一旦取り出して常圧下で木材を圧縮する
ことになる（請求項２）。When it is difficult to compress in a water vapor atmosphere, the wood is once taken out and the wood is compressed under normal pressure (claim 2).
【００１１】圧縮状態のまま再び水蒸気雰囲気内に置く
ことによって、上記と同じ作用を奏することになる。By placing the compressed state again in the water vapor atmosphere, the same effect as described above can be obtained.
【００１２】上記の方法によって圧縮した木材を、通常
使用されている木材と対比してみると、下表のようにな
る。The wood compressed by the above method is compared with the wood which is usually used, and the results are shown in the table below.
【００１３】[0013]
【表１】 この表は、木材圧縮後に吸水しても元の大きさに復元し
ないことも示している。これは、木材が水蒸気圧によっ
て化学変化を起こしている結果であると思われる。[Table 1] The table also shows that water does not return to its original size after being compressed. This seems to be the result of the wood undergoing chemical changes due to water vapor pressure.
【００１４】なお、水蒸気圧が５kgf/cm2より小さい場
合には上記の化学変化が生じることはなく、また逆に、
２５kgf/cm2より大きくすると木材成分の分解が進行し
てその物理的強度が低下する。When the water vapor pressure is less than 5 kgf / cm 2 , the above chemical change does not occur, and conversely,
If it exceeds 25 kgf / cm 2 , the decomposition of the wood component will proceed and its physical strength will decrease.
【００１５】従来軟質材として用途が限定されていた木
材や未利用の間伐材を広範囲において利用できることに
なる。It is possible to use a wide range of wood and unused thinned wood, which have conventionally been limited in use as soft wood.
【００１６】圧縮された木材が坦子菌の成育を阻害する
結果、耐腐朽性を持たせることができ、木材自体に耐久
性を持たせられる利点もある。As a result of the compressed wood inhibiting the growth of the carrier fungi, it has the advantage that it can be made to have decay resistance and the wood itself has durability.
【００１７】また、吸水による寸法安定性が向上する。
また、湾曲材も真直に成形できるため、未利用木材の有
効利用が可能である。Further, dimensional stability due to water absorption is improved.
Further, since the bending material can be formed straight, it is possible to effectively use the unused wood.
【００１８】[0018]
【実施例】次に、上記技術的手段の具体例について説明
する。EXAMPLES Next, specific examples of the above technical means will be described.
【００１９】第一実施例 比重０．３の檜材から切り出した試片を１５kgf/cm2の
水蒸気雰囲気内にて１５分間放置した後、本雰囲気中で
１／３に圧縮加工した。この試片の比重を計ったところ
０．９となっており、色はやや褐色となっていた。First Example A test piece cut out from a cypress material having a specific gravity of 0.3 was left standing in a steam atmosphere of 15 kgf / cm 2 for 15 minutes, and then compressed to 1/3 in this atmosphere. When the specific gravity of this sample was measured, it was 0.9, and the color was slightly brown.
【００２０】この試片を粉砕して椎茸、ひら茸、かわら
茸の培地に加えて坦子菌を培養したところ、試片を加え
ない培地で培養したものに比べ、菌糸の伸張は１／２〜
１／５となり、耐腐朽性が向上していることが確認され
た。The test pieces were crushed and added to a medium of shiitake mushrooms, hiratake mushrooms, and kawaratake mushrooms to culture the carrier fungi. ~
It became 1/5, and it was confirmed that the decay resistance was improved.
【００２１】第二実施例 上記実施例において、圧力容器内に約１０％の濃度とな
るようにクレゾール液を入れて処理したところ、試片内
部にクレゾール液が含浸されていることが確認された。Second Example In the above example, when the cresol solution was placed in the pressure vessel so as to have a concentration of about 10% and treated, it was confirmed that the inside of the test piece was impregnated with the cresol solution. .
【００２２】したがって、水蒸気内にクレゾールその他
の薬剤を混合させることによって、薬効のある木材を得
ることができる。Therefore, medicinal wood can be obtained by mixing cresol and other chemicals in the steam.
【００２３】第三実施例 ２２年生のスギ間伐材（直径１０．５cm×長さ７．５c
m）を１５kgf/cm2の水蒸気雰囲気内にて１５分間蒸煮し
た後、本雰囲気中で二枚の対向する断面Ｖ字型の治具に
より７cm角の正四角柱に圧縮成形した。Third Example 22-year-old cedar thinning material (diameter 10.5 cm x length 7.5 c
m) was boiled for 15 minutes in a steam atmosphere of 15 kgf / cm 2 , and then compression molded into a 7 cm square prism by two facing jigs having V-shaped cross sections in this atmosphere.
【００２４】このように、間伐材を非切削で柱状に圧縮
成形することができ、水蒸気中で成形された材は、マイ
クロ波などによる加工とは違って圧縮変形が固定されて
おり、その後吸水によって変形が回復することはない。
また、この方法を用いることにより湾曲した間伐材でも
真直な柱に成形することが可能であり、また、乾燥によ
る割れや捩れ等が生じない。さらに、切削による柱の製
造とは違って細い間伐材から比較的太い角柱を製造する
ことができ、しかも、１．５〜２倍に圧縮されているた
め表面硬度の高い、かつ、無節の柱を容易に製造するこ
とが可能となった。As described above, the thinned material can be compression-molded into a column shape without cutting, and the material molded in steam has a fixed compression deformation unlike the processing by microwaves and the like. The deformation does not recover.
Further, by using this method, it is possible to form curved thinned wood into a straight column, and cracks and twists due to drying do not occur. Further, unlike the production of columns by cutting, relatively thick prisms can be produced from thin thinned wood, and since they are compressed by 1.5 to 2 times, they have high surface hardness and are knotless. It became possible to easily manufacture the pillars.
Claims (2)
て軟化させた後、上記水蒸気雰囲気内で上記木材を機械
的に圧縮することにより、所望の形状に圧縮成形すると
ともにその変形を固定することを特徴とする木材の改質
処理方法。1. A wood is placed in a steam atmosphere of high temperature and high pressure to be softened, and then the wood is mechanically compressed in the steam atmosphere so that the wood is compression-molded into a desired shape and its deformation is fixed. A method for modifying and treating wood, which is characterized in that
て軟化させた後、常圧下で上記木材を機械的に圧縮する
ことにより所望の形状に圧縮成形し、圧縮成形した上記
木材をその状態で再び上記水蒸気雰囲気内に置いて変形
を固定することを特徴とする木材の改質処理方法。2. The wood is softened by being placed in a steam atmosphere of high temperature and high pressure, and then the wood is mechanically compressed under normal pressure to be compression-molded into a desired shape. Then, the method for modifying wood is characterized in that the deformation is fixed by placing it again in the steam atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34370795A JP2866336B2 (en) | 1989-12-25 | 1995-12-28 | Wood modification method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33559589 | 1989-12-25 | ||
| JP1-335595 | 1989-12-25 | ||
| JP34370795A JP2866336B2 (en) | 1989-12-25 | 1995-12-28 | Wood modification method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2147746A Division JPH072326B2 (en) | 1989-12-25 | 1990-06-05 | Wood modification method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08224709A true JPH08224709A (en) | 1996-09-03 |
| JP2866336B2 JP2866336B2 (en) | 1999-03-08 |
Family
ID=26575229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34370795A Expired - Lifetime JP2866336B2 (en) | 1989-12-25 | 1995-12-28 | Wood modification method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2866336B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005172950A (en) * | 2003-12-08 | 2005-06-30 | Olympus Corp | Electronic equipment |
| WO2016086660A1 (en) * | 2014-12-02 | 2016-06-09 | 王凯 | New type of hardwood made on the basis of compaction techniques |
| WO2016086657A1 (en) * | 2014-12-02 | 2016-06-09 | 王凯 | Method for compacting softwood into hardwood |
-
1995
- 1995-12-28 JP JP34370795A patent/JP2866336B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005172950A (en) * | 2003-12-08 | 2005-06-30 | Olympus Corp | Electronic equipment |
| WO2016086660A1 (en) * | 2014-12-02 | 2016-06-09 | 王凯 | New type of hardwood made on the basis of compaction techniques |
| WO2016086657A1 (en) * | 2014-12-02 | 2016-06-09 | 王凯 | Method for compacting softwood into hardwood |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2866336B2 (en) | 1999-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Pfriem et al. | Furfuryl alcohol impregnation for improved plasticization and fixation during the densification of wood. | |
| WO1991009713A1 (en) | Method and apparatus for treating wood | |
| Unsal et al. | Decay and termite resistance, water absorption and swelling of thermally compressed wood panels | |
| TW201507832A (en) | Acetylated wood | |
| US20050038182A1 (en) | Wood products and processes for the preparation thereof | |
| JPH072326B2 (en) | Wood modification method | |
| Leng et al. | Dimensionally stable and durable wood by lignin impregnation | |
| Dong et al. | Structure and Properties of Polymer-Impregnated Wood Prepared by in-situ Polymerization of Reactive Monomers. | |
| Yu et al. | Effect of high-pressure densification on moisture sorption properties of Paulownia wood | |
| JP2866336B2 (en) | Wood modification method | |
| Miki et al. | Superplastic deformation of solid wood by slipping cells at sub-micrometre intercellular layers | |
| Yao et al. | Triethanolamine impregnation/steam synergistic softening of teakwood to improve bending properties and its mechanism | |
| JP3916258B2 (en) | Wood treatment method by impregnation | |
| EP4048493B1 (en) | Method for preparation of densified wood article | |
| JP2640061B2 (en) | Densification method of wood fiber material | |
| Wu et al. | Improvement of Bamboo Properties via In Situ Construction of Polyhydroxyethyl Methylacrylate and Polymethyl Methylacrylate Networks. | |
| Killmann et al. | Oil palm stem densification using ammonia treatment: a preliminary study | |
| RU2140850C1 (en) | Method for manufacture of impregnated wooden articles | |
| He et al. | Fabrication of highly stable and durable wood materials by modification of polyacrylamide (PAM)-glyoxal (GLY) | |
| Sarmin et al. | Influence of resin content and density on thickness swelling of three-layered hybrid particleboard composed of sawdust and Acacia mangium | |
| JP2569376B2 (en) | Wood processing equipment | |
| Hartono et al. | Termite and Decay Resistances of Sumatran Elephant Dung-based Particleboard Modified with Wood Shavings and Bamboo Layering. | |
| AYRILMIŞ et al. | Effect of wood chip size on hemicellulose extraction andtechnological properties of flakeboard | |
| Yu et al. | Study on Microwave Pretreatment Technology to Improve the Effect of Shellac Impregnation of Fast-Growing Chinese Fir | |
| JPH06285818A (en) | Shaping method of stock such as round timber or the like |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081218 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081218 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 11 Free format text: PAYMENT UNTIL: 20091218 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101218 Year of fee payment: 12 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101218 Year of fee payment: 12 |