JPH0737015B2 - Wood processing method - Google Patents

Wood processing method

Info

Publication number
JPH0737015B2
JPH0737015B2 JP14866592A JP14866592A JPH0737015B2 JP H0737015 B2 JPH0737015 B2 JP H0737015B2 JP 14866592 A JP14866592 A JP 14866592A JP 14866592 A JP14866592 A JP 14866592A JP H0737015 B2 JPH0737015 B2 JP H0737015B2
Authority
JP
Japan
Prior art keywords
wood
log
hollow
flat plate
processing
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.)
Expired - Lifetime
Application number
JP14866592A
Other languages
Japanese (ja)
Other versions
JPH05318411A (en
Inventor
勇 錦織
隆 池淵
正晴 澤江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimane Prefecture
Original Assignee
Shimane Prefecture
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shimane Prefecture filed Critical Shimane Prefecture
Priority to JP14866592A priority Critical patent/JPH0737015B2/en
Publication of JPH05318411A publication Critical patent/JPH05318411A/en
Publication of JPH0737015B2 publication Critical patent/JPH0737015B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Finished Plywoods (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は中空丸太材や平板加工材
あるいは柾目板加工材の製造方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a hollow log material, a flat plate processing material or a grained board processing material.

【0002】[0002]

【従来の技術】スギ間伐材等のように年輪幅が大きいた
めに材質がもろく、また形状が湾曲したものを建築用材
として利用促進させるためには、このような間伐材の材
質を補強し、また形状を通直に矯正しなければならな
い。このような問題点を解決するため従来技術として
は、特開平3ー295605号公報に示される技術が知
られている。即ちこれは、木材の熱可塑性を利用して材
質を改良するとともに、不定型な丸太材から直接四角形
をはじめ、種々の多角形の角材を成形する方法として開
発された技術であり、具体的には木材を加熱処理し、軟
化したものを圧縮して所望の成形木材を得て、ついでこ
れを加熱処理あるいは乾燥させることにより、それらの
形状を固定する木材の成形方法である。
2. Description of the Related Art In order to promote the utilization of materials with a large annual ring width such as cedar thinning timbers and having a curved shape as construction materials, the material of such thinning timbers should be reinforced, In addition, the shape must be straightened. As a conventional technique for solving such a problem, a technique disclosed in Japanese Patent Laid-Open No. 3-295605 is known. That is, this is a technology developed as a method for improving the material properties by utilizing the thermoplasticity of wood, and for forming squares of various polygons, including squares directly from atypical logs, Is a method for molding wood, in which wood is heat-treated, softened one is compressed to obtain a desired molded wood, and then heat-treated or dried to fix their shapes.

【0003】[0003]

【発明が解決しようとする課題】しかし上記の、木材を
多角形断面に圧偏成形加工する方法においては、以下に
挙げるような問題点があった。 (1)圧縮成形した木材を固定させるための乾燥処理に
長時間を費やし、作業能率が悪かった。 (2)乾燥処理後も木材の表層と中心部とでは含水率傾
斜が大きいことがあり、この場合、再加熱処理あるいは
乾燥段階で割れが生じるおそれがあった。 (3)木材の中心部分は年輪幅の密度が極めて低い未成
熟部分であり、材質がもろく軟質であるため、一連の処
理加工の際に成形木材の寸法に狂いが生じ易かった。 (4)圧縮強化された結果、防腐、防虫のための木材へ
の薬液注入が困難となっていた。 (5)不定型な丸太状の木材から、成形角材あるいは成
形丸太材を生産することはできたが、この方法のみで平
板材を生産することは極めて困難であった。
However, the above-described method of pressure-biasing the wood into a polygonal cross section has the following problems. (1) It took a long time to dry the compression-molded wood to fix it, and the work efficiency was poor. (2) The water content gradient may be large between the surface layer and the central portion of the wood even after the drying treatment, and in this case, cracks may occur during the reheating treatment or the drying stage. (3) Since the central part of the wood is an immature part where the density of annual ring width is extremely low and the material is brittle and soft, the dimension of the formed wood is likely to be misaligned during a series of processing. (4) As a result of the compression strengthening, it has become difficult to inject a chemical solution into wood for antiseptic and insect control. (5) Although it was possible to produce a shaped square or a shaped log from an irregularly shaped log-shaped wood, it was extremely difficult to produce a flat plate only by this method.

【0004】[0004]

【課題を解決するための手段】上記のような問題点を解
決するための本発明の木材加工方法は、木材1を軟化処
理し、軟化した木材1が塑性を保持している間に圧縮し
て通直に矯正し、直通形状を保持しながら冷却固定した
後、該木材1の断面略中央を通る孔10を貫通、穿設
し、更に乾燥処理することを第1の特徴としている。ま
た上記方法により製造された中空丸太材9を断面直径線
に沿って切断した後、該切断材16を加熱圧縮して平板
材19に加工し、平板状態で冷却固定及び乾燥処理する
ことを第2の特徴としている。さらに上記方法により製
造された平板加工材19を積重接着した後、柾目21と
直交する方向23に切断していくことを第3の特徴とし
ている。
The wood processing method of the present invention for solving the above-mentioned problems involves softening the wood 1 and compressing the softened wood 1 while maintaining its plasticity. The first feature is that after straightening through straightening, cooling and fixing while maintaining the straight through shape, a hole 10 passing through substantially the center of the cross section of the wood 1 is penetrated and drilled, and further dried. Further, after cutting the hollow log material 9 manufactured by the above method along the diameter line of the cross section, the cutting material 16 is heated and compressed to be processed into the flat plate material 19, and is cooled and fixed and dried in a flat plate state. It has two characteristics. Further, the third feature is that the flat plate processed material 19 manufactured by the above method is stacked and adhered and then cut in the direction 23 orthogonal to the grain 21.

【0005】[0005]

【作用】木材1に水を与えた後、誘電加熱を行い、その
電気エネルギーを内部摩擦により80〜130℃の熱に
変えると、木材1の主要構成要素であるリニングおよび
ヘミセルロースが軟化し、木材1は熱可塑化される。次
いで熱可塑化した木材1を、その材温を保持しながら圧
縮すると容易に細胞が変形して細胞空隙が縮小し繊維を
緻密にして強度が増加し、材質が均一となるとともに所
望形状に形成できることとなる。このため円柱成形加工
機なるプレス機5を用いて圧縮された木材1は、直通の
円柱形状に矯正され、矯正形状を保持しながら木材1の
常温まで冷却すると、木材1は矯正形状にて一次固定さ
れる。次いでボーリングマシン8を用いて、矯正木材1
の断面略中央を通る孔10を矯正木材1を貫通するよう
に穿設すると、中空丸太9が成形され、圧縮成形の状態
のままで乾燥させると中空丸太9は完全に固定化され、
その後、原形に復元してしまう等のクリープ回復が起き
ることもなくなる。
[Function] When water is applied to the wood 1, dielectric heating is performed and the electric energy is changed to heat of 80 to 130 ° C. by internal friction, so that the main components of the wood 1, lining and hemicellulose, are softened, and the wood is softened. 1 is thermoplasticized. Then, when the thermoplasticized wood 1 is compressed while maintaining its material temperature, the cells are easily deformed, the cell voids are reduced, the fibers are made dense and the strength is increased, and the material is made uniform and formed into a desired shape. It will be possible. Therefore, the wood 1 compressed by using the press machine 5 which is a columnar forming machine is straightened into a straight columnar shape, and when the wood 1 is cooled to room temperature while maintaining the straightened shape, the wood 1 is primary in the straightened shape. Fixed. Then, using the boring machine 8, straightened wood 1
A hollow log 9 is formed by making a hole 10 passing through the center of the cross section of the straight wood 1 so as to penetrate the straightened wood 1, and the hollow log 9 is completely fixed when dried in a compression-molded state.
After that, the creep recovery such as restoration to the original shape does not occur.

【0006】このようにして加工された中空丸太9は、
中空であるが故に乾燥処理時間の短縮化がはかられる。
また乾燥処理後に木材の表層と中心部とで見られる含水
率傾斜を解消することができ、再加熱処理を行う際に生
じうる割れの問題を解決できる。さらに中空丸太9にす
ると、木材の中心部分である未成熟部分(材質がもろく
軟質である部分)が取り除かれることになるため、その
後の一連の処理加工の際に丸太の寸法に狂いが生じるこ
とを防止できることとなる。その他、中空とすることに
より当然に生じる保温性、保湿性、軽量化の向上、薬液
注入の容易化、中空部への配線の可能性等の諸効果を得
ることとなる。
The hollow log 9 thus processed is
Since it is hollow, the drying process time can be shortened.
Further, it is possible to eliminate the water content gradient observed in the surface layer and the central portion of the wood after the drying treatment, and it is possible to solve the problem of cracks that may occur during the reheating treatment. Furthermore, if the hollow log 9 is used, the immature part (the part where the material is brittle and soft), which is the central part of the wood, is removed, so that the log dimensions may be incorrect during the subsequent series of processing. Can be prevented. In addition, it is possible to obtain various effects such as improvement in heat retention, moisture retention, weight reduction, facilitation of chemical solution injection, possibility of wiring to the hollow portion, and the like, which are naturally caused by making the hollow.

【0007】またボーリングマシン8を用いて孔10を
穿設した段階で、中空丸太9を断面直径線に沿って切断
するとC型断面状の切断材16が形成される。上記要領
で加熱すると、該切断材16は軟化し熱可塑化される。
次いで熱可塑化した切断材16をその材温を保持しなが
ら平板成形プレス17により上下方向から圧縮すると、
C型断面状の切断材16は展開されて断面台形状の平板
材19が成形されることとなる。該平板材19を圧縮成
形のままで冷却、乾燥すれば、完全に固定化することと
なる。さらに該成形平板材19を積重接着して木塊20
を形成した後、木塊20の周壁上の柾目21と直交する
方向23に任意の厚さに切断していくと、平面上に柾目
21を有する柾目板25を得ることができる。
Further, when the hollow log 9 is cut along the cross-sectional diameter line at the stage where the hole 10 is bored using the boring machine 8, a C-shaped cross-section cutting material 16 is formed. When heated in the above manner, the cutting material 16 is softened and becomes thermoplastic.
Next, when the thermoplasticized cutting material 16 is compressed from above and below by the flat plate forming press 17 while maintaining the material temperature,
The cutting material 16 having a C-shaped cross section is expanded to form a flat plate material 19 having a trapezoidal cross section. When the flat plate material 19 is cooled and dried as it is in compression molding, it is completely fixed. Further, the molded flat plate materials 19 are stacked and adhered to each other to form a wooden block 20.
After forming, the grain is cut into a desired thickness in the direction 23 orthogonal to the grain 21 on the peripheral wall of the wooden block 20 to obtain the grain plate 25 having the grain 21 on the plane.

【0008】[0008]

【実施例】以下、図示する実施例につき詳述すると、1
5〜20年生の小、中径材からなるスギ、ヒノキ等の間
伐材(長さ3〜4m,直径10〜25cm)を剥皮の木
材から成る丸太1にして予め含水率120%〜200%
の飽水状態とする。この場合、丸太1は通常、元口1a
から末口1bに進むに従い僅かづつ径小となり、また自
然木が有する湾曲部を随所に形成している。該丸太1に
マイクロ波照射2aによる誘電加熱を行い、丸太1の材
内温度を100〜120℃にまで発熱させ、丸太1を軟
化、熱可塑化させる。スギ、ヒノキ等の針葉樹は40〜
50%を占めるセルロース、25〜30%のリグニン及
び15〜20%のヘミセルロースで構成されているた
め、誘電加熱の電気エネルギーが内部摩擦により100
〜120℃の熱に変わると、丸太1の主要構成要素であ
るリニング及びヘミセルロースが軟化し、木材が熱可塑
化されることになる。この場合周波数をおよそ2450
MHzとして20〜30分程度の照射が望ましい。この
ような丸太1の軟化処理はマイクロ波の他、高周波印加
による誘電加熱あるいはスチーム等を利用して行っても
よい。また多量の丸太1を軟化処理する場合、マイクロ
波加熱機2を一列に並べて垂設し、その下側にベルトコ
ンベア3を連ねてラインを組み、駆動するベルトコンベ
ア3上に丸太1を一列方向に乗せて多数の丸太1へのマ
イクロ波照射2aを同時に行うものとする。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described in detail below.
5th to 20th grade small and medium-sized lumber, cypress and other thinned wood (length 3 to 4m, diameter 10 to 25cm) made into log 1 made of peeled wood, water content 120% to 200% in advance.
To be saturated with water. In this case, the log 1 is usually the front end 1a.
The diameter gradually decreases from the end to the end opening 1b, and curved portions of natural wood are formed everywhere. The log 1 is subjected to dielectric heating by microwave irradiation 2a to heat the material inside the log 1 to 100 to 120 ° C. to soften and plasticize the log 1. Coniferous trees such as cedar and cypress are 40-
Since it is composed of 50% of cellulose, 25 to 30% of lignin and 15 to 20% of hemicellulose, the electric energy of dielectric heating is 100 due to internal friction.
When the heat is changed to ˜120 ° C., the linning and hemicellulose, which are the main components of the log 1, are softened, and the wood is plasticized. In this case the frequency is about 2450
Irradiation for 20 to 30 minutes as MHz is desirable. Such softening treatment of the log 1 may be performed by using dielectric heating by applying a high frequency or steam or the like, in addition to the microwave. When a large amount of logs 1 are softened, microwave heaters 2 are vertically arranged in a line, and a belt conveyor 3 is connected underneath to form a line. It is assumed that a large number of logs 1 are irradiated with microwaves 2a at the same time.

【0009】次いで可塑化した丸太1を、その材温を保
持しながら円柱成形加工機なるプレス機5により、丸太
1の長さ方向に対し垂直に上下方向から、圧力10〜2
0kg/cm2 で約5〜10分程度圧締し、通直な円柱
状の丸太材に矯正する。なお加圧力は木材の材質や含水
率あるいは加熱処理の程度により3〜130kg/cm
2 の範囲で変動しうる。このように元口1a、末口1b
が同径となり、湾曲部が矯正され通直となった丸太1を
その圧締状態のまま締結具7で包着し、冷却室内6に収
納し、3時間程度をかけて常温まで急冷、一次固定す
る。
Next, the plasticized log 1 is pressed by a pressing machine 5 which is a columnar forming machine while maintaining the material temperature thereof, from the vertical direction perpendicular to the length direction of the log 1 to a pressure of 10-2.
Press at 0 kg / cm 2 for about 5 to 10 minutes to straighten it into a straight log. The applied pressure is 3 to 130 kg / cm depending on the material and moisture content of wood or the degree of heat treatment.
It can vary in the range of 2 . In this way, the main opening 1a and the end opening 1b
Of the log 1 having the same diameter and straightened by straightening the curved portion is wrapped with the fastener 7 in the pressed state, stored in the cooling chamber 6 and rapidly cooled to room temperature for about 3 hours, the primary Fix it.

【0010】一次固定された矯正丸太1に対してボーリ
ングマシン8により、矯正丸太1の断面略中央を通るよ
うに、直径20〜40mmの孔10を貫通、穿設する。
なおこの場合も矯正丸太1は、ボーリングマシンによる
穿設作業の衝撃等で変形や割れが生じることを防ぐた
め、締結具7により包着保護されている。
A hole 10 having a diameter of 20 to 40 mm is penetrated and drilled by a boring machine 8 with respect to the primary fixing straightening log 1 so as to pass through the center of the cross section of the straightening log 1.
In this case as well, the straightening log 1 is wrapped and protected by the fasteners 7 in order to prevent deformation and cracking due to the impact of the boring machine drilling work.

【0011】このようにして得られた中空丸太9を、締
結具7により包着したまま含水率20〜25%まで人口
乾燥あるいは自然乾燥すれば、通直の中空丸太形状に完
全固定される。但しこの場合、固定化の度合をより強固
にし、その後の変形や割れあるいは原形に復元してしま
う等のクリープ回復が起きることを完全に防止するため
には、再加熱及び再冷却処理を行うことが望ましい。即
ちマイクロ波照射2bによる場合は、周波数2450M
Hzのマイクロ波を20〜30分程度照射し、中空丸太
9の材内温度を100〜120℃まで発熱させる。続い
て冷却室内6に収納し、約3時間程度で再び常温まで急
冷却処理を施す。なおこの二次固定処理の段階において
も中空丸太9は矯正形状のまま固定化されるべく、締結
具7で圧締、包着されている。このような方法で二次固
定処理までされた中空丸太9はその後、高温あるいは低
温または乾燥あるいは多湿等の様々な環境下にあっても
変形や寸法変化が殆ど生じないものとなる。なお二次固
定処理までされた中空丸太9の変形部分の組織を電子顕
微鏡で観察すると、細胞が圧し潰され変形しているが、
破壊は生じていない。
If the hollow log 9 thus obtained is artificially dried or naturally dried to a water content of 20 to 25% while being wrapped with the fastener 7, the hollow log 9 is completely fixed in a straight hollow log shape. However, in this case, in order to further strengthen the degree of immobilization and prevent the subsequent creep recovery such as deformation, cracking, or restoration to the original shape, reheating and recooling should be performed. Is desirable. That is, when the microwave irradiation 2b is used, the frequency is 2450M.
The microwave of 20 Hz is irradiated for about 20 to 30 minutes to heat the hollow log 9 to an internal temperature of 100 to 120 ° C. Then, it is stored in the cooling chamber 6 and the rapid cooling process is performed again to room temperature in about 3 hours. At this stage of the secondary fixing process, the hollow logs 9 are clamped and wrapped by the fasteners 7 so that the hollow logs 9 can be fixed in the corrected shape. The hollow logs 9 that have been subjected to the secondary fixing treatment by such a method will hardly undergo deformation or dimensional change thereafter even under various environments such as high temperature, low temperature, dry or humid. When the tissue of the deformed portion of the hollow log 9 that has been subjected to the secondary fixing treatment is observed with an electron microscope, cells are crushed and deformed,
No destruction has occurred.

【0012】このような二次固定処理化の後、中空丸太
9を締結具7から解き放し、除湿乾燥機12を用いて人
工的に含水率20〜25%まで乾燥させる。この場合、
除湿乾燥室内13の温度を40〜55℃、湿度50%前
後として送風を与え続けるが、中空丸太9は中空である
が故に、従来の中空加工されていない成形木材に比し、
乾燥に要する時間がおよそ3割程度短縮され、2〜3週
間で済むこととなる。自然乾燥による場合は所望の含水
率まで乾燥させるのにおよそ3〜6カ月程度を要する
が、この場合にも従来の成形木材に比べると乾燥期間が
大きく短縮されることとなる。
After such secondary fixing treatment, the hollow logs 9 are released from the fasteners 7 and artificially dried using a dehumidifying dryer 12 to a water content of 20 to 25%. in this case,
The temperature in the dehumidifying / drying chamber 13 is kept at 40 to 55 ° C. and the humidity is around 50%, and air is continuously blown. However, since the hollow logs 9 are hollow, compared to the conventional unprocessed molded wood,
The time required for drying is reduced by about 30%, and it takes only 2 to 3 weeks. In the case of natural drying, it takes about 3 to 6 months to dry to a desired water content, but even in this case, the drying period is greatly shortened as compared with the conventional molded wood.

【0013】乾燥処理が終了した中空丸太9は、製品と
して建築資材等に利用され得るものとなる。なお本実施
例では剥皮材につき説明したが、例えば茶室のすきや造
り、ログハウス、バンガロー建材として利用される場合
には、用途に応じて皮付きの丸太材にも同様の加工を施
すことが可能である。また圧縮成形の際には円柱形状の
他、任意の多角形状に圧縮加工することも可能である。
The hollow log 9 that has been dried is ready for use as a product in building materials and the like. Although the peeling material has been described in this embodiment, when it is used as, for example, a tea room sukiya structure, a log house, or a bungalow building material, it is possible to apply the same processing to a log material with a skin according to the application. Is. Further, in compression molding, it is possible to perform compression processing into any polygonal shape other than the columnar shape.

【0014】さらに本発明によれば、孔10が穿設され
た中空丸太9を用いて以下に説明するような方法におい
て、平板加工を容易に行うことが可能となる。ボーリン
グマシンにより穿設作業が行なわれた中空丸太9を、乾
燥処理あるいは再加熱処理を行う前に断面直径線に沿っ
て鋸15で切断する。切断されたC型断面状の切断材1
6をマイクロ波加熱等の手段により軟化処理する。この
場合もC型切断材16の材内温度が100〜120℃に
上がるまで、マイクロ波の照射2cを上記同様に続ける
ものとする。次いで、軟化処理されたC型切断材16を
平板成形プレス17上に乗せ、上下方向より圧締する。
このように上下方向より圧締されたC型切断材16は展
開されて断面が台形状の平板材19に成形されることと
なる。この成形平板材19を、締結板17a及び固定リ
ング18を介して圧締状態のまま冷却(室図示しない)
に収納し、約3時間材内温度が常温になるまで急冷す
る。冷却固定化処理の後、成形平板材19を締結板17
aから解き放し、材内含水率20〜25%になるまで人
工乾燥あるいは自然乾燥の処理を行う。乾燥処理が終了
した成形平板材19は完全に固定化され、そのままでも
製品として住宅建材、家具材その他の工業材料として供
することができる。
Further, according to the present invention, flat plate processing can be easily performed by the method described below using the hollow logs 9 having the holes 10 formed therein. The hollow log 9 that has been drilled by a boring machine is cut with a saw 15 along the diameter line of the cross section before being dried or reheated. Cut C-shaped cross-section cutting material 1
6 is softened by means such as microwave heating. Also in this case, the microwave irradiation 2c is continued in the same manner as above until the internal temperature of the C-shaped cutting material 16 rises to 100 to 120 ° C. Then, the softened C-shaped cutting material 16 is placed on the flat plate forming press 17 and is clamped in the vertical direction.
In this way, the C-shaped cutting material 16 clamped in the vertical direction is expanded and formed into a flat plate material 19 having a trapezoidal cross section. This formed flat plate material 19 is cooled through the fastening plate 17a and the fixing ring 18 in a pressed state (chamber not shown).
Then, the material is rapidly cooled until the temperature inside the material reaches normal temperature for about 3 hours. After the cooling and fixing process, the molded flat plate material 19 is attached to the fastening plate 17.
It is released from a and subjected to artificial drying or natural drying until the moisture content in the material reaches 20 to 25%. The molded flat plate material 19 that has been dried is completely fixed, and can be used as a product as a building material, furniture material or other industrial material as it is.

【0015】さらに該成形平板材19を幾重にも積重接
着して木塊20とし、これを上下方向から圧締して接着
強度を強固にした後、木塊周壁上の柾目21と直交する
方向23に鋸15で切断していくと、四面に平行した柾
目21を有する柾目板25が得られる。切断する際の厚
さは用途に応じて任意に決めることができる。
Further, the formed flat plate members 19 are stacked and adhered in multiple layers to form a wooden block 20, which is pressed from above and below to strengthen the adhesive strength, and then intersects with the grain 21 on the peripheral wall of the wooden block at right angles. By cutting with the saw 15 in the direction 23, the grain plate 25 having the grains 21 parallel to the four surfaces is obtained. The thickness at the time of cutting can be arbitrarily determined according to the application.

【0016】[0016]

【発明の効果】以上の如く構成される本発明によれば、
大径材を製材することなく容易、確実に不定型な小、中
径材から直通且つ補強された丸太材や平板材さらには銘
木とされる美観に優れた柾目板材を生産できる。このた
め加工歩留まりが著しく向上するとともに作業性が向上
し、また製材時に伴うような騒音を除去し、かつ製材時
に生じる廃材を除去できる。そして従来はスギ、ヒノキ
が使用されなかった建材、家具材、工業材料等の分野に
まで小、中径材の用途が拡大するため、針葉樹の間伐材
利用度が向上する。
According to the present invention configured as described above,
It is possible to easily and reliably produce logs of small or medium size, straight and reinforced from large-diameter lumber without flattening large-diameter lumber, flat-plate lumber, and even fine-grained lumber that is a famous wood. For this reason, the processing yield is remarkably improved, workability is improved, noise such as that associated with lumber is removed, and waste material produced during lumber can be removed. Further, since the applications of small and medium-sized materials are expanded to fields such as building materials, furniture materials, and industrial materials where cedar and cypress have not been used conventionally, utilization of thinning materials of conifers is improved.

【0017】また中空丸太材の製造方法によれば以下の
独自の効果が挙げられる。 (1)中空材で水分むらの少ない木材となるため、割れ
の少ない製品化が可能となり、また製品化するための乾
燥時間の短縮がはかれる。 (2)未熟材でも孔空けにより未成熟部分が取り除かれ
るため、狂いの少ない製品化が可能となる。 (3)中空材のため中空部への配線、配管等が可能とな
る。 (4)中空材のため薬液注入が迅速確実に行え、防腐、
防虫処理するが容易となる。 (5)中空材のため特に保温性、吸湿性、放湿性に優
れ、結露を生じず、室内の温湿度に対する調整機能を発
揮する。 (6)中空材であるため軽量化が進み、運搬、組み立て
等の取り扱いが容易となる。 (7)平板材生産等への二次加工が容易、確実に行い得
る。
Further, according to the method of manufacturing the hollow log material, the following unique effects can be obtained. (1) Since the wood is a hollow material and has little water content unevenness, it is possible to produce a product with few cracks, and the drying time for producing the product can be shortened. (2) Since even immature wood is removed of immature parts by drilling holes, it is possible to commercialize products with less deviation. (3) Since it is a hollow material, wiring and piping to the hollow portion are possible. (4) Since it is a hollow material, chemical solution can be injected quickly and securely,
Insect repellent becomes easy. (5) Since it is a hollow material, it is particularly excellent in heat retention, hygroscopicity, and moisture release, does not cause dew condensation, and exerts a function of adjusting temperature and humidity in the room. (6) Since it is a hollow material, its weight is reduced, and handling such as transportation and assembly becomes easy. (7) Secondary processing such as flat plate production can be performed easily and reliably.

【図面の簡単な説明】[Brief description of drawings]

【図1】木材を直通に矯正加工する一実施例である。FIG. 1 is an example of straightening straight wood.

【図2】矯正木材を中空加工する一実施例である。FIG. 2 is an example of hollowing straightened wood.

【図3】中空丸太を乾燥処理する一実施例である。FIG. 3 is an example of drying treatment of hollow logs.

【図4】中空丸太を平板加工する一実施例である。FIG. 4 is an example of processing a hollow log into a flat plate.

【図5】平板材から柾目材を生産加工する一実施例であ
る。
FIG. 5 is an example of producing and processing grain wood from flat plate material.

【符号の説明】[Explanation of symbols]

1 木材 9 中空丸太 10 孔 16 切断材 19 平板材 21 柾目 23 柾目と直交する方向 1 Wood 9 Hollow log 10 Hole 16 Cutting material 19 Flat plate material 21 Grain 23 Direction orthogonal to grain

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 木材(1)を軟化処理し、軟化した木材
(1)が塑性を保持している間に圧縮して通直に矯正
し、直通形状を保持しながら冷却固定した後、該木材
(1)の断面略中央を通る孔(10)を貫通、穿設し、
更に乾燥処理する木材加工方法。
1. A wood (1) is softened, compressed while the softened wood (1) retains its plasticity, straightened, and cooled and fixed while maintaining its straight shape, A hole (10) passing through substantially the center of the cross section of the wood (1) is penetrated and bored,
A wood processing method of further drying.
【請求項2】 請求項1に記載の方法により製造された
中空丸太材(9)を断面直径線に沿って切断した後、該
切断材(16)を加熱圧縮して平板材(19)に加工
し、平板状態で冷却固定及び乾燥処理する木材加工方
法。
2. A hollow log material (9) produced by the method according to claim 1 is cut along a diameter line of a cross section, and then the cut material (16) is heated and compressed into a flat plate material (19). A wood processing method of processing, cooling, fixing and drying in a flat plate state.
【請求項3】 請求項2の方法により製造された平板加
工材(19)を積重接着した後、柾目(21)と直交す
る方向(23)に切断していく木材加工方法。
3. A method for processing wood, which comprises stacking and laminating flat plate materials (19) produced by the method of claim 2 and then cutting in a direction (23) orthogonal to the perforations (21).
JP14866592A 1992-05-15 1992-05-15 Wood processing method Expired - Lifetime JPH0737015B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14866592A JPH0737015B2 (en) 1992-05-15 1992-05-15 Wood processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14866592A JPH0737015B2 (en) 1992-05-15 1992-05-15 Wood processing method

Publications (2)

Publication Number Publication Date
JPH05318411A JPH05318411A (en) 1993-12-03
JPH0737015B2 true JPH0737015B2 (en) 1995-04-26

Family

ID=15457885

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14866592A Expired - Lifetime JPH0737015B2 (en) 1992-05-15 1992-05-15 Wood processing method

Country Status (1)

Country Link
JP (1) JPH0737015B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008055886A (en) * 2006-08-30 2008-03-13 Takeshi Yamaguchi Method for production of processed lumber with high-surface hardness
JP6716210B2 (en) * 2015-07-10 2020-07-01 飛騨産業株式会社 Method for manufacturing cutting board and cutting board
CN113146772A (en) * 2021-03-24 2021-07-23 和县薛氏木制品制造有限公司 Cooling frame for placing plywood
CN115476413B (en) * 2022-10-26 2023-07-14 西南林业大学 Hollow artificial log and its making process

Also Published As

Publication number Publication date
JPH05318411A (en) 1993-12-03

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