JP3002197B1 - Press compression method of wood material and press device used in this method - Google Patents
Press compression method of wood material and press device used in this methodInfo
- Publication number
- JP3002197B1 JP3002197B1 JP4551199A JP4551199A JP3002197B1 JP 3002197 B1 JP3002197 B1 JP 3002197B1 JP 4551199 A JP4551199 A JP 4551199A JP 4551199 A JP4551199 A JP 4551199A JP 3002197 B1 JP3002197 B1 JP 3002197B1
- Authority
- JP
- Japan
- Prior art keywords
- closed space
- hot plate
- wood material
- pressurized
- wood
- Prior art date
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Abstract
【要約】
【目的】 ランニングコストと設備コストを低減して、
木質材を理想的な環境で圧縮状態に永久固定する。
【構成】 木質材の両面を、熱板１でプレスすると共
に、密閉空間３において、湿潤な状態で永久固定できる
温度と圧力に加熱、加圧して永久固定する。木質材を、
加熱、加圧している密閉空間３に、空気、窒素ガス、炭
酸ガス等の水蒸気を加えない加圧気体を圧入して密閉空
間３を所定の圧力に加圧して木質材を永久固定する。[Abstract] [Purpose] To reduce running costs and equipment costs,
Wood material is permanently fixed in a compressed state in an ideal environment. A wooden material is pressed on both sides by a hot plate, and is heated and pressurized to a temperature and pressure in a closed state that can be permanently fixed in a closed space, and is permanently fixed. Wood material,
A pressurized gas such as air, nitrogen gas, carbon dioxide gas or the like is added into the heated and pressurized closed space 3 to pressurize the closed space 3 to a predetermined pressure to permanently fix the wood material.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、木質材を気密の状態で
加熱、加圧して、圧縮された状態に永久固定する方法と
この方法に使用するプレス装置に関する。本明細書にお
いて「木質材」とは、木材と、木材を所定の形状に切断
したものを結合して板状やブロック状に成形したものを
含む意味に使用する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for permanently fixing a wooden material in a compressed state by heating and pressurizing the wooden material in an airtight state, and a press apparatus used in this method. As used herein, the term "wood material" is used to include wood and wood cut into a predetermined shape, which are combined into a plate or block shape.
【０００２】[0002]
【従来の技術】木製の板材、あるいは、木材チップを板
状に結合したパーチクルボード等の木質材は、加熱状態
で加圧して、圧縮することにより、密度を高くして強度
を向上できる。また、板材や木製柱を高密度化すること
によって、表面を美しい鏡面の高密度平滑面にできる。
さらに、高密度な平滑面は、汚れ難く、耐摩耗性も向上
する。このように、板材や柱等の木質材は、高密度に圧
縮して、種々の特長が実現される。この特長は、とく
に、スギのように、比重の小さい板材の物性を著しく改
善する。また、スギ以外の板材に限らず、圧縮された木
質材は、寸法安定性に優れ、しかも加工後に狂い等を少
なくできる特長もある。2. Description of the Related Art A wood board or a wood board such as a particle board in which wood chips are combined in a plate shape can be pressurized and compressed in a heated state to increase the density and improve the strength. In addition, by increasing the density of the plate material or the wooden pillar, the surface can be made a beautiful mirror-finished high-density smooth surface.
Furthermore, the high-density smooth surface is less likely to become dirty and has improved wear resistance. As described above, wood materials such as plate materials and pillars are compressed at a high density to realize various features. This feature remarkably improves the physical properties of a plate having a low specific gravity, such as cedar. Further, the compressed wood material is not limited to the board material other than the cedar, and has an advantage that it has excellent dimensional stability and can reduce deviation after processing.
【０００３】木質材を圧縮する方法は、大別して２種類
ある。第１の方法は、開放された環境で木質材を加熱し
て圧縮する。この方法は、木質材を、たとえば１５０〜
２００℃の熱板で加熱する。この方法で圧縮された木質
材は、その後に水に接触して吸水し、あるいは、煮沸等
の環境に晒されると、もとの形状に復元してしまう、い
いかえると木質材を永久固定できない弊害がある。この
弊害は、木質材を極めて長い時間、たとえば、２０時
間、１８０〜２００℃に加熱する方法で少なくできる。
しかしながら、このように長い時間プレスする方法で
は、加工処理に要するコストが極めて高くなって、用途
が著しく制限される欠点がある。[0003] There are roughly two methods for compressing wood materials. The first method heats and compresses the wood in an open environment. In this method, the wood material is, for example, 150 to
Heat with a hot plate at 200 ° C. The wood material compressed by this method absorbs water in contact with water afterwards, or restores its original shape when exposed to an environment such as boiling. In other words, the wood material cannot be permanently fixed. There is. This adverse effect can be reduced by heating the wood material to 180 to 200 ° C. for an extremely long time, for example, 20 hours.
However, the method of pressing for such a long time has a drawback that the cost required for the processing is extremely high, and the use is significantly restricted.
【０００４】この方法に対して、木質材を気密に密閉さ
れた環境で、加熱して加圧する方法は、短時間の加熱
で、木質材を永久固定できる。この方法は、たとえば、
特開平８−９０５１６号公報、特開平６−９１６１１号
公報、特開平１０−８６１０６号公報、特開平１０−９
５０００３号公報に記載される。[0004] In contrast to this method, the method of heating and pressurizing the wood material in an airtightly sealed environment can permanently fix the wood material by heating for a short time. This method, for example,
JP-A-8-90516, JP-A-6-91611, JP-A-10-86106, JP-A-10-9
No. 50003.
【０００５】特開平８−９０５１６号公報には、図１に
示すように、下側の熱板１に、気密の密閉空間３を形成
するための凹部を、周囲に設けた周壁２の内側に設けて
いる。周壁２の上面には、溝を設けてＯリング５を配設
している。密閉空間３となる凹部に木質材４を置いて、
上の熱板１を押し下げると、上の熱板１の下面がＯリン
グ５に密着して、凹部を密閉空間３とする。この状態
で、木質材は、気密の密閉空間３で加熱状態で加圧され
て、永久固定される。Japanese Unexamined Patent Publication No. Hei 8-90516 discloses that, as shown in FIG. 1, a concave portion for forming an airtight closed space 3 is formed in a lower heat plate 1 inside a peripheral wall 2 provided around the lower heat plate 1. Provided. On the upper surface of the peripheral wall 2, an O-ring 5 is provided with a groove. Put the wood material 4 in the recess that becomes the closed space 3,
When the upper hot plate 1 is pushed down, the lower surface of the upper hot plate 1 is brought into close contact with the O-ring 5, and the concave portion becomes the closed space 3. In this state, the wooden material is pressurized in a heated state in the hermetically closed space 3 and is permanently fixed.
【０００６】[0006]
【発明が解決しようとする課題】図１に示す装置は、木
質材を圧縮状態に永久固定できる特長がある。ただ、こ
の図に示す方法で、木質材を圧縮状態に永久固定には、
密閉空間３の圧力を、たとえば、約９ｋｇｆ／ｃｍ２Ｇ
程度まで高くする必要がある。密閉空間３の圧力は、熱
板１で木質材が加熱されて、木質材に含まれる水分が気
化、膨張して上昇する。熱板１の温度は、たとえば、１
８０℃に設定される。水の沸点は、圧力９ｋｇｆ／ｃｍ
２Ｇにおいて約１８０℃である。このため、理論的に
は、木質材に含まれる水を熱板１で加熱して、気化させ
て、密閉空間３の圧力を約９ｋｇｆ／ｃｍ２Ｇに上昇で
きる。The apparatus shown in FIG. 1 has the feature that wood can be permanently fixed in a compressed state. However, in the method shown in this figure, wood material is permanently fixed in a compressed state,
The pressure in the closed space 3 is, for example, about 9 kgf / cm 2 G
It needs to be as high as possible. The pressure in the closed space 3 is increased by heating the wooden material by the hot plate 1 and evaporating and expanding the moisture contained in the wooden material. The temperature of the hot plate 1 is, for example, 1
Set to 80 ° C. The boiling point of water is 9 kgf / cm
About 180 ° C. at 2 G. Therefore, theoretically, the water contained in the wood can be heated by the hot plate 1 and vaporized, and the pressure in the closed space 3 can be increased to about 9 kgf / cm 2 G.
【０００７】しかしながら、実際に設定温度を１８０℃
に設定した熱板で、木質材を加熱、加圧して気密の密閉
空間を形成するとき、密閉空間の圧力は、投入する木質
材の湿潤状態に大きく左右されて、思うように上昇させ
るのが非常に難しい。それは、熱板で加熱された木質材
の内部に含まれる水分が沸騰して大きな気化熱を奪い、
熱伝導を著しく阻害するために、木質材の内部まで設定
温度に加熱されないからである。However, when the set temperature is actually set to 180 ° C.
When a wooden plate is heated and pressurized to form an airtight enclosed space, the pressure in the enclosed space is greatly affected by the wet state of the wooden material to be introduced, and should be increased as desired. extremely difficult. That is, the moisture contained in the wood material heated by the hot plate boils and takes a large heat of vaporization,
This is because the inside of the wooden material is not heated to the set temperature because heat conduction is significantly impaired.
【０００８】この弊害を解消するために、従来のプレス
装置は、密閉空間に高圧水蒸気を圧入して、密閉空間の
圧力を高くしている。この装置は、圧入される高圧水蒸
気で、密閉空間を加圧するので、密閉空間を設定圧力ま
で上昇できる。ただ、この方法で木質材を圧縮状態に永
久固定する装置は、密閉空間に高圧水蒸気を供給するた
めに、設備コストとランニングコストの両方が高くな
る。高圧の水蒸気を発生させるボイラーを必要とするか
らである。さらに、この装置は、密閉空間に圧入される
水蒸気が木質材に吸収されるので、木質材の乾燥に余分
なエネルギーを必要とする欠点もある。[0008] In order to solve this problem, the conventional press device presses high-pressure steam into the closed space to increase the pressure in the closed space. This device pressurizes the sealed space with the high-pressure steam injected, so that the sealed space can be raised to the set pressure. However, an apparatus for permanently fixing a wood material in a compressed state by this method requires both equipment cost and running cost because high-pressure steam is supplied to the closed space. This is because a boiler that generates high-pressure steam is required. In addition, this device has the disadvantage that extra energy is required to dry the wood, since the water vapor pressed into the enclosed space is absorbed by the wood.
【０００９】さらに、木質材チップを板状に集合してプ
レス成形して製造されるパーチクルボードは、木質材チ
ップを熱板でプレスして製造される。熱板でプレスし
て、接着剤を硬化して木質材チップを板状に結合する。
このとき、熱板が木質材チップを加熱するときの熱伝導
が極めて悪い。一般的には、熱板が木質材を加熱する熱
伝導は、１ｍｍの加熱に２０秒以上もかかると言われて
いる。この欠点を解消するために、木質材チップを、熱
板の間に設けた密閉空間に配設して、ここに高圧水蒸気
を圧入して、加熱することができる。しかしながら、こ
の方法に使用するプレス装置は、板材を密閉空間で加
熱、加圧するのと同じように、設備コストとランニング
コストが高くなる欠点がある。Further, a particle board manufactured by assembling wood material chips into a plate shape and press-molding the same is manufactured by pressing the wood material chips with a hot plate. Pressing with a hot plate, the adhesive is cured, and the wood chips are bonded in a plate shape.
At this time, heat conduction when the hot plate heats the wood chip is extremely poor. Generally, it is said that the heat conduction of the wooden plate by the hot plate takes more than 20 seconds to heat 1 mm. In order to solve this drawback, the wood chips can be arranged in a closed space provided between the hot plates, into which high-pressure steam is injected and heated. However, the press apparatus used in this method has a drawback in that the equipment cost and the running cost are high, as in the case of heating and pressing a plate material in a closed space.
【００１０】本発明は、従来のこのような欠点を解決す
ることを目的に開発されたものである。本発明の重要な
目的は、ランニングコストと設備コストを低減して、木
質材を理想的な環境で圧縮状態に永久固定できる木質材
のプレス圧縮方法とこの方法に使用するプレス装置を提
供することにある。[0010] The present invention has been developed with the object of solving such a conventional disadvantage. An important object of the present invention is to provide a method for press-pressing a wood material that can permanently fix the wood material in a compressed state in an ideal environment while reducing running costs and equipment costs, and a press apparatus used for the method. It is in.
【００１１】[0011]
【課題を解決するための手段】本発明の請求項１の木質
材のプレス圧縮方法は、木質材の両面を、熱板１でプレ
スすると共に、木質材を密閉空間３において、湿潤な状
態で永久固定できる温度と圧力に加熱、加圧する。さら
に、本発明の木質材のプレス圧縮方法は、木質材を加
熱、加圧している密閉空間３に、空気、窒素ガス、炭酸
ガス等の水蒸気を加えない気体を圧入して、密閉空間３
を所定の圧力に加圧して木質材を永久固定する。According to a first aspect of the present invention, there is provided a method for pressing and compressing a wood material, wherein both sides of the wood material are pressed by a hot plate 1 and the wood material is wetted in an enclosed space 3 in a wet state. Heat and pressurize to a temperature and pressure that can be permanently fixed. Further, in the method for press-pressing wood material according to the present invention, a gas to which water vapor is not added, such as air, nitrogen gas or carbon dioxide gas, is press-fitted into the closed space 3 where the wood material is heated and pressurized.
Is pressurized to a predetermined pressure to permanently fix the wooden material.
【００１２】本発明の請求項２に記載する木質材のプレ
ス圧縮方法は、密閉空間３を加圧して木質材を永久固定
した後、密閉空間３を減圧して、木質材に含まれる水分
を除去する。According to a second aspect of the present invention, there is provided a method for press-compressing a wooden material, wherein the closed space 3 is pressurized to permanently fix the wooden material, and then the enclosed space 3 is decompressed to remove water contained in the wooden material. Remove.
【００１３】本発明の請求項３の木質材のプレス装置
は、木質材の両面を、密閉空間３でもって気密に密閉す
る状態でプレスする熱板１と、熱板１を木質材に押圧す
る押圧機構６と、熱板１を所定の温度に加熱する加熱機
構とを備える。さらに、プレス装置は、密閉空間３に、
空気、窒素ガス、炭酸ガス等の、水蒸気を加えない加圧
気体を供給する加圧気体源１０連結している。加圧気体
源１０は、密閉空間３の木質材を熱板１でプレスする状
態として、密閉空間３に加圧空気を圧入し、密閉空間３
を所定の圧力に上昇させる。密閉空間３を水蒸気を加え
ない気体で加圧する状態として、木質材を熱板１で加
熱、加圧して圧縮する。According to a third aspect of the present invention, there is provided a press apparatus for pressing wood material, wherein a hot plate 1 for pressing both surfaces of the wood material in a sealed space 3 in an airtight manner, and the hot plate 1 is pressed against the wood material. It includes a pressing mechanism 6 and a heating mechanism for heating the hot plate 1 to a predetermined temperature. Further, the press device is provided in the closed space 3,
A pressurized gas source 10 for supplying a pressurized gas to which water vapor is not added, such as air, nitrogen gas, or carbon dioxide gas, is connected. The pressurized gas source 10 presses the wood material of the closed space 3 with the hot plate 1, pressurizes compressed air into the closed space 3, and pressurizes the closed space 3.
To a predetermined pressure. In a state where the closed space 3 is pressurized with a gas to which steam is not added, the wooden material is heated and pressed by the hot plate 1 and compressed.
【００１４】本発明の請求項４の木質材のプレス装置
は、密閉空間３に、加圧気体源１０と真空ポンプ７を連
結している。加圧気体源１０が密閉空間３を加圧して、
木質材を加熱状態でプレスした後、密閉空間３を真空ポ
ンプ７で減圧して木質材を、冷却させると共に、乾燥さ
せる。According to a fourth aspect of the present invention, a pressurized gas source 10 and a vacuum pump 7 are connected to the closed space 3. The pressurized gas source 10 pressurizes the closed space 3,
After pressing the wooden material in a heated state, the closed space 3 is depressurized by the vacuum pump 7 to cool and dry the wooden material.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施例を図面に基
づいて説明する。ただし、以下に示す実施例は、本発明
の技術思想を具体化するための木質材プレス圧縮方法と
この方法に使用するプレス装置を例示するものであっ
て、本発明は方法と装置を下記のものに特定しない。Embodiments of the present invention will be described below with reference to the drawings. However, the following examples illustrate a wood material press compression method for embodying the technical idea of the present invention and a press apparatus used in this method, and the present invention relates to the following method and apparatus. Not specific.
【００１６】さらに、この明細書は、特許請求の範囲を
理解し易いように、実施例に示される部材に対応する番
号を、「特許請求の範囲の欄」、および「課題を解決す
るための手段の欄」に示される部材に付記している。た
だ、特許請求の範囲に示される部材を、実施例の部材に
特定するものでは決してない。Further, in this specification, in order to make it easier to understand the claims, the numbers corresponding to the members shown in the embodiments will be referred to as “claims” and “ In the column of “means”. However, the members described in the claims are not limited to the members of the embodiments.
【００１７】図２に示す木質材のプレス装置は、木質材
の両面を、密閉空間３でもって気密に密閉する状態でプ
レスする熱板１と、熱板１を木質材に押圧する押圧機構
６と、熱板１を所定の温度に加熱する加熱機構（図示せ
ず）とを備える。FIG. 2 shows a press apparatus for pressing wood material, in which a hot plate 1 for pressing both sides of a wood material in a hermetically sealed manner in a closed space 3 and a pressing mechanism 6 for pressing the hot plate 1 against the wood material. And a heating mechanism (not shown) for heating the hot plate 1 to a predetermined temperature.
【００１８】図において下側の熱板１は、密閉空間３を
形成するの周壁２を有する。周壁２は、密閉空間３の周
囲を囲む形状、たとえば、方形状をしている。さらに、
周壁２は上面を平面状として、降下した上側の熱板１の
下面に密着するようにしている。周壁２上面には、パッ
キン８の嵌着溝を設け、ここにパッキン８を入れて固定
している。嵌着溝のパッキン８は、降下した上側の熱板
１の下面に密着して、密閉空間３をガス漏れしない状態
で、気密に閉塞する。In the figure, the lower hot plate 1 has a peripheral wall 2 forming a closed space 3. The peripheral wall 2 has a shape surrounding the periphery of the closed space 3, for example, a square shape. further,
The peripheral wall 2 has a flat upper surface, and is in close contact with the lower surface of the upper hot plate 1 that has been lowered. A fitting groove for the packing 8 is provided on the upper surface of the peripheral wall 2, and the packing 8 is inserted and fixed therein. The gasket 8 in the fitting groove is in close contact with the lower surface of the upper hot plate 1 that has descended, and hermetically closes the sealed space 3 in a gas-tight state.
【００１９】図２に示すプレス装置は、密閉空間３を形
成する周壁２を、下側の熱板１に固定している。周壁
は、熱板と別の部材とすることもできる。この周壁は、
上下の熱板の間にガス漏れしない状態で密着するよう
に、上下両面に嵌着溝を設けて、この嵌着溝にパッキン
を嵌着する。周壁２の高さは、圧縮される木質材４の厚
さを決定する。木質材を圧縮する状態で、周壁が熱板に
気密に密着して、密閉空間を形成するからである。いい
かえると、木質材は周壁の高さに等しい厚さに永久固定
される。周壁の高さよりも木質材を薄く圧縮するとき
は、周壁の内側に金属板の敷板を敷き込む。この方法
は、周壁を交換することなく、敷板の厚さと積層枚数を
変更して、圧縮される木質材の厚さを調整できる。In the press device shown in FIG. 2, the peripheral wall 2 forming the closed space 3 is fixed to the lower hot plate 1. The peripheral wall may be a member different from the hot plate. This wall is
Fitting grooves are provided on both upper and lower surfaces of the upper and lower hot plates so as to be in close contact with each other without gas leakage, and packing is fitted into the fitting grooves. The height of the peripheral wall 2 determines the thickness of the wooden material 4 to be compressed. This is because, in a state where the wooden material is compressed, the peripheral wall is tightly adhered to the hot plate to form a closed space. In other words, the wood is permanently fixed to a thickness equal to the height of the surrounding wall. When compressing the wood material thinner than the height of the surrounding wall, lay a metal plate on the inside of the surrounding wall. According to this method, the thickness of the wooden material to be compressed can be adjusted by changing the thickness of the floor boards and the number of laminated sheets without replacing the peripheral wall.
【００２０】周壁２は、加圧気体源１０を連結する貫通
孔９を設けている。この貫通孔９には、配管を介して、
加圧気体源１０と真空ポンプ７を連結している。加圧気
体源１０は、空気、窒素ガス、炭酸ガス等の水蒸気を加
えない加圧気体を密閉空間３に供給して、密閉空間３を
所定の圧力に加圧する。The peripheral wall 2 has a through hole 9 for connecting a pressurized gas source 10. In this through-hole 9,
The pressurized gas source 10 and the vacuum pump 7 are connected. The pressurized gas source 10 supplies a pressurized gas such as air, nitrogen gas, carbon dioxide gas or the like to which no steam is added to the closed space 3 and pressurizes the closed space 3 to a predetermined pressure.
【００２１】密閉空間３に加圧空気を供給する装置は、
加圧気体源１０にコンプレッサーを使用する。コンプレ
ッサーは、空気を加圧して、密閉空間３に圧入する。コ
ンプレッサーから密閉空間３に供給された空気は、熱板
１に加熱されて圧力が上昇する。したがって、コンプレ
ッサーは、密閉空間３を加圧する設定圧力よりも低い圧
力の空気を供給して、密閉空間３を設定圧力にできる。
たとえば、密閉空間３を１０ｋｇｆ／ｃｍ２Ｇの設定圧
力に加圧する装置においては、コンプレッサーが密閉空
間３に供給する空気圧を、７〜８ｋｇｆ／ｃｍ２Ｇとし
て設定圧力に加圧できる。A device for supplying pressurized air to the closed space 3 is as follows.
A compressor is used as the pressurized gas source 10. The compressor pressurizes air and presses it into the closed space 3. The air supplied from the compressor to the closed space 3 is heated by the hot plate 1 and the pressure increases. Therefore, the compressor can supply air having a pressure lower than the set pressure for pressurizing the closed space 3 to set the closed space 3 to the set pressure.
For example, in a device that pressurizes the closed space 3 to a set pressure of 10 kgf / cm 2 G, the air pressure supplied from the compressor to the closed space 3 can be set to 7 to 8 kgf / cm 2 G to the set pressure.
【００２２】密閉空間３に窒素ガスまたは炭酸ガスを供
給する装置は、加圧気体源１０として、窒素ガスまたは
炭酸ガスを高圧に加圧して充填しているガスボンベを使
用する。ガスボンベは、所定の圧力の窒素ガス、または
炭酸ガスを密閉空間３に供給して設定圧力に加圧する。
密閉空間３に、窒素ガスを供給する装置は、処理中の酸
化を防止できる特長がある。炭酸ガスは木質材を透過し
やすく、木質材中の水分に溶け込むので乾燥能力が向上
する特長がある。さらに、密閉空間３に供給する気体
に、防腐剤や防虫剤等の処理剤を添加して、木質材を永
久固定することもできる。この状態で永久固定された木
質材は、処理工程において、防腐、あるいは防虫処理で
きる。The apparatus for supplying nitrogen gas or carbon dioxide gas to the closed space 3 uses, as the pressurized gas source 10, a gas cylinder filled with nitrogen gas or carbon dioxide gas under high pressure. The gas cylinder supplies nitrogen gas or carbon dioxide gas at a predetermined pressure to the closed space 3 and pressurizes the gas to a set pressure.
The device that supplies nitrogen gas to the closed space 3 has a feature that oxidation during processing can be prevented. Carbon dioxide gas easily permeates wood materials and dissolves in the moisture in the wood materials, thus improving the drying ability. Further, a processing agent such as a preservative or an insect repellent may be added to the gas supplied to the closed space 3 to permanently fix the wood material. The wood material permanently fixed in this state can be subjected to antiseptic or insect repellent treatment in the treatment step.
【００２３】加圧気体源１０は、密閉空間３を５〜１０
ｋｇｆ／ｃｍ２Ｇ、好ましくは６〜１０ｋｇｆ／ｃｍ２
Ｇ、さらに好ましくは７〜１０ｋｇｆ／ｃｍ２Ｇに加圧
する。密閉空間３の内圧は、熱板１が木質材を加圧する
単位面積当りの圧力よりも低くする。密閉空間３の内圧
が、熱板１の単位面積当りの圧力よりも高いと、内圧で
熱板１が押し上げられるからである。さらに、密閉空間
３の内圧が低すぎると、短時間で木質材を永久固定でき
なくなる。それは、密閉空間３の内圧が低いと、熱板１
で加熱された木質材に含まれる水分が沸騰して、周囲か
ら多量の気化熱を奪い、木質材が内部まで均一に加熱さ
れなくなるからである。したがって、密閉空間３の内圧
は、好ましくは、熱板１で加熱された木質材に含まれる
水分が気化しない圧力とする。水は、圧力が９ｋｇｆ／
ｃｍ２Ｇにおいて約１８０℃で沸騰する。したがって、
熱板１の温度を１８０℃に設定する場合、密閉空間３の
設定圧力を９ｋｇｆ／ｃｍ２Ｇに設定する。この状態で
熱板１に加熱される木質材は、熱板１に接触する表面は
ほぼ１８０℃に加熱されるが、木質材の内部の温度は１
８０℃以下となり、木質材に含まれる水分は沸騰しな
い。沸騰しない木質材内の水は、気化熱で木質材を冷却
することなく、表面の熱を内部に伝導して、全体を１８
０℃近くに加熱する。内部の水を沸騰させないで加熱さ
れる木質材は、速やかに熱が伝導されて、内部まで均一
に加熱される。それは、水の熱伝導率が木材に比べて５
倍も大きいので、熱伝導の良い水を介して内部まで熱が
伝導されるからである。The pressurized gas source 10 divides the closed space 3 from 5 to 10
kgf / cm 2 G, preferably 6 to 10 kgf / cm 2
G, more preferably 7 to 10 kgf / cm 2 G. The internal pressure of the closed space 3 is lower than the pressure per unit area at which the hot plate 1 presses the wooden material. This is because if the internal pressure of the closed space 3 is higher than the pressure per unit area of the hot plate 1, the hot plate 1 is pushed up by the internal pressure. Further, if the internal pressure of the closed space 3 is too low, the wooden material cannot be permanently fixed in a short time. When the internal pressure of the closed space 3 is low, the hot plate 1
This is because the moisture contained in the wooden material heated in the step boils, taking a large amount of vaporization heat from the surroundings, and the wooden material is not uniformly heated to the inside. Therefore, the internal pressure of the closed space 3 is preferably a pressure at which moisture contained in the wooden material heated by the hot plate 1 does not evaporate. Water has a pressure of 9kgf /
Boiling at about 180 ° C. in cm 2 G. Therefore,
When setting the temperature of the hot plate 1 to 180 ° C., the set pressure of the closed space 3 is set to 9 kgf / cm 2 G. In this state, the surface of the wooden material heated to the hot plate 1 is heated to approximately 180 ° C. at the surface in contact with the hot plate 1, but the temperature inside the wooden material is 1 °.
The temperature is below 80 ° C., and the water contained in the wood does not boil. The water in the non-boiling wood material transfers the heat of the surface to the inside without cooling the wood material by the heat of vaporization, and the whole is 18%.
Heat to near 0 ° C. Wood materials that are heated without boiling the water inside are quickly conducted, and are evenly heated to the inside. It has a thermal conductivity of 5 times that of wood.
Because it is twice as large, heat is conducted to the inside through water having good heat conduction.
【００２４】真空ポンプ７は、密閉空間３を減圧して、
木質材を冷却、乾燥する。真空ポンプ７で密閉空間３を
減圧する装置は、密閉空間３から取り出した木質材を、
より少ない水分率に乾燥できると共に、冷却して取り出
しできる特長がある。The vacuum pump 7 reduces the pressure in the closed space 3,
Cool and dry the wood. The device for decompressing the closed space 3 with the vacuum pump 7 is configured to remove the wooden material taken out of the closed space 3,
It has the advantage that it can be dried to a lower moisture content and can be taken out after cooling.
【００２５】図２に示す装置は、密閉空間３に、大気開
放弁１１と圧力制御弁１２も連結している。大気開放弁
１１は、密閉空間３を加圧するときと減圧するときに閉
弁される。加圧している密閉空間３の気体を排気すると
き、あるいは、減圧された密閉空間３に外気を吸入させ
るときに開弁される。圧力制御弁１２は、密閉空間３の
圧力が設定圧力よりも高くなったときに開弁して、密閉
空間３の圧力を設定圧力に調整する。In the apparatus shown in FIG. 2, an air release valve 11 and a pressure control valve 12 are also connected to the closed space 3. The atmosphere release valve 11 is closed when the closed space 3 is pressurized and depressurized. The valve is opened when the gas in the pressurized closed space 3 is exhausted, or when outside air is sucked into the depressurized closed space 3. The pressure control valve 12 opens when the pressure in the closed space 3 becomes higher than the set pressure, and adjusts the pressure in the closed space 3 to the set pressure.
【００２６】熱板１の押圧機構６は、上側の熱板１に連
結している油圧シリンダーである。油圧シリンダーは、
上側の熱板１を押し下げて、密閉空間３の木質材をプレ
スすると共に、密閉空間３を気密に閉塞する。下側の熱
板１は水平に固定している。押圧機構６は、上下の熱板
１を油圧シリンダーに連結して、木質材をプレスして密
閉空間３を閉塞し、あるいは、下側の熱板１を油圧シリ
ンダーで押し上げて、木質材をプレスすることもでき
る。さらに、押圧機構６は、必ずしも油圧シリンダーを
使用する必要はない。押圧機構６には、たとえば、カム
やクランク機構で熱板を押圧することもできる。The pressing mechanism 6 for the hot plate 1 is a hydraulic cylinder connected to the upper hot plate 1. The hydraulic cylinder is
The upper hot plate 1 is pushed down to press the wooden material of the closed space 3 and the closed space 3 is airtightly closed. The lower hot plate 1 is fixed horizontally. The pressing mechanism 6 connects the upper and lower hot plates 1 to the hydraulic cylinder and presses the wood material to close the closed space 3 or pushes the lower hot plate 1 up with the hydraulic cylinder to press the wood material. You can also. Further, the pressing mechanism 6 does not necessarily need to use a hydraulic cylinder. The pressing mechanism 6 can press the hot plate with a cam or a crank mechanism, for example.
【００２７】さらに、熱板１は加熱機構で所定の温度に
加熱される。加熱機構は、たとえば、蒸気やヒータで熱
板１を加熱する。蒸気で加熱される熱板１は、蒸気を通
過させる通路の内部に設けている。ヒータで加熱される
熱板１は、内部に電気で加熱されるヒータを内蔵させて
いる。ただし、本発明は、熱板１の加熱機構を蒸気やヒ
ータに特定しない。加熱機構には、熱板１と木質材を加
熱できる全ての機構、たとえば、高周波で木質材を直接
に加熱することもできる。Further, the heating plate 1 is heated to a predetermined temperature by a heating mechanism. The heating mechanism heats the hot plate 1 with steam or a heater, for example. The hot plate 1 heated by steam is provided inside a passage through which steam passes. The heating plate 1 heated by the heater has a built-in heater heated by electricity. However, the present invention does not specify a heating mechanism of the hot plate 1 as steam or a heater. The heating mechanism may be any mechanism that can heat the hot plate 1 and the wooden material, for example, the wooden material may be directly heated at a high frequency.
【００２８】加熱機構が熱板を加熱する温度は、好まし
くは１５０〜２００℃、より好ましくは１６０〜２００
℃、最適には１７０〜１９０℃に設定される。熱板の温
度は、木質材を永久固定する時間に影響を与える。熱板
の温度が低くなると、木質材を永久固定する時間が長く
なる。熱板の温度が高すぎると、加熱状態でプレスされ
た木質材の表面が焦げた状態になる。したがって、熱板
の温度は、木質材を永久固定できる時間と木質材の種類
を考慮して最適値に設定される。The temperature at which the heating mechanism heats the hot plate is preferably 150 to 200 ° C., more preferably 160 to 200 ° C.
° C, optimally between 170 and 190 ° C. The temperature of the hotplate affects the time for permanently fixing the wood. The lower the temperature of the hot plate, the longer the time for permanently fixing the wood material. If the temperature of the hot plate is too high, the surface of the wooden material pressed in the heated state will be in a scorched state. Therefore, the temperature of the hot plate is set to an optimum value in consideration of the time during which the wooden material can be permanently fixed and the type of the wooden material.
【００２９】たとえば、熱板の温度を１８０℃、密閉空
間の内圧を９ｋｇｆ／ｃｍ２Ｇに設定して、６分でスギ
を永久固定できる。密閉空間の内圧と処理時間を同じに
して、熱板の温度を１６０℃にすると、処理されたスギ
を熱湯で煮沸すると、多少復元する。ただし、熱板の温
度を１６０℃としても、処理時間を長くしてスギを永久
固定できる。したがって、熱板の温度は処理する木質材
の種類と処理時間とを考慮して最適値に設定される。For example, by setting the temperature of the hot plate at 180 ° C. and the internal pressure of the closed space at 9 kgf / cm 2 G, the cedar can be permanently fixed in 6 minutes. When the internal pressure of the closed space and the processing time are the same, and the temperature of the hot plate is set to 160 ° C., the treated cedar is boiled with hot water to be restored to some extent. However, even if the temperature of the hot plate is set to 160 ° C., the processing time is lengthened and the cedar can be fixed permanently. Therefore, the temperature of the hot plate is set to an optimum value in consideration of the type of wood material to be processed and the processing time.
【００３０】図２に示すプレス装置は、以下の工程で木
質材を永久固定する。［木材又はパーチクルボードであ
る木質材を熱板の間の熱板に供給する工程］熱板１を開
いて、熱板１の間に木質材を供給する。木質材は、乾燥
しないで熱板１に供給する。木質材の水分率が低い場
合、木質材に水分を供給し、あるいは熱板１に水を供給
する。水分が少なすぎると、木質材を効率よく永久固定
できなくなるからである。熱板１に供給する木質材の理
想的な水分率は８〜１００％、好ましくは１０〜１００
％、さらに好ましくは１０〜５０％とする。The press device shown in FIG. 2 permanently fixes the wood material in the following steps. [Step of Supplying Wood Material That is Wood or Particle Board to Hot Plate Between Hot Plates] Open the hot plate 1 and supply the wood material between the hot plates 1. The wood material is supplied to the hot plate 1 without drying. When the water content of the wood material is low, water is supplied to the wood material or water is supplied to the hot plate 1. If the water content is too small, the wood material cannot be efficiently fixed permanently. The ideal moisture content of the wood material supplied to the hot plate 1 is 8 to 100%, preferably 10 to 100%.
%, More preferably 10 to 50%.
【００３１】［熱板を気密に密閉する工程］熱板１を所
定の設定温度に加熱し、上側の熱板１を油圧シリンダー
で降下させて、密閉空間３を気密に密閉する。上側の熱
板１は、周壁２の上面にパッキン８を介して密着して、
密閉空間３を閉塞する。さらに、木質材は両面の熱板１
で加熱、加圧されて圧縮される。木質材は、たとえば、
元の厚さの８０％に圧縮される。ただし熱板１は、木質
材を３０〜９９％、好ましくは４５〜９５％、さらに好
ましくは５０〜９５％に圧縮される。とくに、スギ、ラ
ワン、ヒノキ等のほとんどの木材は、表面部分をわずか
に圧縮して、表面を高密度な平滑面とすることができ
る。このため、本発明のプレス圧縮方法は、極めて少な
い圧縮率においても、木材の表面状態を著しく改善でき
る特長がある。[Step of Hermetically Sealing Hot Plate] The hot plate 1 is heated to a predetermined temperature, and the upper hot plate 1 is lowered by a hydraulic cylinder to hermetically close the sealed space 3. The upper heating plate 1 is in close contact with the upper surface of the peripheral wall 2 via a packing 8,
The closed space 3 is closed. Furthermore, the wood material is a hot plate 1 on both sides.
Is heated, pressurized and compressed. Wood material, for example,
Compressed to 80% of original thickness. However, the hot plate 1 is compressed to a wood material of 30 to 99%, preferably 45 to 95%, and more preferably 50 to 95%. In particular, most woods, such as cedar, rawan, and hinoki, can slightly compress the surface portion to make the surface a high-density smooth surface. For this reason, the press compression method of the present invention has a feature that the surface condition of wood can be remarkably improved even at an extremely low compression ratio.
【００３２】［密閉空間を所定の圧力に加圧する工程］
コンプレッサーと密閉空間３との間に連結している開閉
弁を開いて、加圧空気を供給する。密閉空間３には、約
７ｋｇｆ／ｃｍ２Ｇの空気を供給する。ただし、密閉空
間３に供給する空気圧は、密閉空間３が加熱された状態
で５〜１０ｋｇｆ／ｃｍ２Ｇとなる圧力とすることもで
きる。コンプレッサーに連結された開閉弁を開弁すると
き、真空ポンプ７に連結された開閉弁と、大気開放弁１
１と圧力制御弁１２は閉弁される。[Step of pressing closed space to predetermined pressure]
The on-off valve connected between the compressor and the closed space 3 is opened to supply pressurized air. About 7 kgf / cm 2 G of air is supplied to the closed space 3. However, the air pressure supplied to the closed space 3 may be a pressure that becomes 5 to 10 kgf / cm 2 G when the closed space 3 is heated. When the on-off valve connected to the compressor is opened, the on-off valve connected to the vacuum pump 7 and the air release valve 1
1 and the pressure control valve 12 are closed.
【００３３】［密閉空間で木質材を圧密処理する工程］
密閉空間３に供給された空気は、熱板１に加熱され膨張
し、密閉空間３の内圧を設定圧まで上昇させる。密閉空
間３の内圧が設定圧よりも高くなると、大気開放弁１１
を開いて、密閉空間３の内圧を設定圧に調整する。この
状態で、密閉空間３において木質材は、加熱、加圧状態
でプレスされた永久固定される状態に処理される。この
処理時間は、木質材の種類によって最適値が違うが、た
とえばスギの場合、約６分に設定される。スギよりも密
度の高い木質材、たとえば、ヒノキ等においては処理時
間を長くする。さらに、木質材の水分率が低いとき、あ
るいは熱板１の温度が低いときにも、処理時間を長くす
る。[Step of consolidating wood material in closed space]
The air supplied to the closed space 3 is heated by the hot plate 1 and expands, thereby increasing the internal pressure of the closed space 3 to a set pressure. When the internal pressure of the closed space 3 becomes higher than the set pressure, the air release valve 11
Is opened to adjust the internal pressure of the closed space 3 to the set pressure. In this state, the wooden material in the closed space 3 is processed into a permanently fixed state pressed in a heated and pressurized state. This processing time has an optimum value that differs depending on the type of wood material. For wood materials having a higher density than cedar, for example, cypress, the treatment time is increased. Further, when the moisture content of the wooden material is low or when the temperature of the hot plate 1 is low, the processing time is lengthened.
【００３４】［密閉空間を減圧して木質材を冷却、乾燥
させる工程］大気開放弁１１を開いて、密閉空間３から
空気を排出し、内部の圧力を大気圧まで低下させる。こ
の状態で、木質材に含まれる水分は沸騰し、気化、蒸発
して除去される。内部の水分が沸騰する気化熱で木質材
は冷却される。さらに、密閉空間３は、空気が断熱膨張
されることによっても温度が低くなる。[Step of depressurizing closed space to cool and dry wooden material] Open air opening valve 11 to discharge air from closed space 3 and reduce the internal pressure to atmospheric pressure. In this state, the water contained in the wood is boiled, vaporized and evaporated to be removed. The wood is cooled by the heat of vaporization in which the water inside boils. Further, the temperature of the closed space 3 is also reduced by adiabatic expansion of air.
【００３５】［密閉空間を減圧してさらに冷却、乾燥す
る工程］大気開放弁１１を閉弁した後、真空ポンプ７と
密閉空間３との間に連結された真空ポンプ７を運転し
て、密閉空間３を減圧する。この状態で、木質材はさら
に乾燥されると共に、冷却される。木質材の温度が設定
温度まで低下した後、上側の熱板１を上昇して、密閉空
間３から木質材を取り出す。[Step of depressurizing and further cooling and drying the closed space] After closing the atmosphere opening valve 11, the vacuum pump 7 connected between the vacuum pump 7 and the closed space 3 is operated to close the closed space. The space 3 is depressurized. In this state, the wooden material is further dried and cooled. After the temperature of the wooden material has dropped to the set temperature, the upper hot plate 1 is raised, and the wooden material is taken out of the closed space 3.
【００３６】以上のようにして、木質材を永久固定する
と、木質材を十分に乾燥して、しかも冷却して取り出し
できる。ただ、本発明の方法は、密閉空間３を大気に開
放した後、密閉空間３を減圧することなく、木質材を密
閉空間３から取り出すこともできる。As described above, when the wooden material is permanently fixed, the wooden material can be sufficiently dried, cooled, and taken out. However, according to the method of the present invention, after opening the closed space 3 to the atmosphere, the wooden material can be taken out of the closed space 3 without depressurizing the closed space 3.
【００３７】[0037]
【発明の効果】本発明のプレス圧縮方法とプレス装置
は、ランニングコストと設備コストの両方を低減して、
木質材を理想的な状態で圧縮して永久固定できる特長が
ある。それは、本発明が、木質材を、加熱、加圧してい
る密閉空間に、空気等の加圧気体を圧入して密閉空間を
所定の圧力に加圧するからである。密閉空間に供給され
る空気等の加圧気体は、熱板で加熱される木質材に含ま
れる水分、あるいは、密閉空間に供給された水分が沸騰
して気化されるのを制限する。このため、熱板でもって
木質材が内部まで速やかに加熱されると共に、密閉空間
の内圧をほとんど瞬時に設定圧力まで高くできる。した
がって、密閉空間の木質材は、所定の圧力に加圧される
状態で、熱板に加圧して加熱され、永久固定するために
理想的な環境となる。この状態の木質材は、極めて短時
間で圧縮状態に永久固定される。The press compression method and press apparatus of the present invention reduce both running costs and equipment costs,
It has the feature that wood can be compressed in an ideal state and permanently fixed. This is because, in the present invention, a pressurized gas such as air is press-fitted into a closed space in which a wooden material is heated and pressurized to pressurize the closed space to a predetermined pressure. The pressurized gas such as air supplied to the closed space restricts the water contained in the wooden material heated by the hot plate or the water supplied to the closed space from boiling and vaporizing. Therefore, the wooden material is quickly heated to the inside by the hot plate, and the internal pressure of the closed space can be almost instantaneously increased to the set pressure. Accordingly, the wood material in the closed space is heated by being pressed against the hot plate in a state where the wood material is pressed to a predetermined pressure, which is an ideal environment for permanent fixing. The wood material in this state is permanently fixed in a compressed state in a very short time.
【００３８】本発明は、以上のように、密閉空間に空気
等の加圧気体を供給して、木質材を理想的な環境で処理
するので、高価な蒸気ボイラー等を使用する必要がな
く、設備コストとランニングコストを低減できる。この
ことは、たとえば、有効に使用されない間伐材等の木質
材を有効利用するために、とくに大切なことである。そ
れは、安価に間伐材は、いかにして処理コストを安くし
て高品質な木質材にできるかで、実用化できるかどうか
が決定されるからである。As described above, the present invention supplies a pressurized gas such as air to an enclosed space and treats a wood material in an ideal environment, so that it is not necessary to use an expensive steam boiler or the like. Equipment costs and running costs can be reduced. This is particularly important, for example, in order to effectively use wood materials such as thinned wood that are not used effectively. The reason is that it is determined whether thinned wood can be put to practical use depending on how the processing cost can be reduced and high quality wood can be obtained at low cost.
【図１】従来の木質材のプレス圧縮装置を示す斜視図FIG. 1 is a perspective view showing a conventional wood pressing press apparatus.
【図２】本発明の実施例のプレス装置を示す断面図FIG. 2 is a cross-sectional view illustrating a pressing device according to an embodiment of the present invention.
１…熱板 ２…周壁 ３…密閉空間 ４…木質材 ５…Ｏリング ６…押圧機構 ７…真空ポンプ ８…パッキン ９…貫通孔 １０…加圧気体源 １１…大気開放弁 １２…圧力制御弁 DESCRIPTION OF SYMBOLS 1 ... Hot plate 2 ... Peripheral wall 3 ... Sealed space 4 ... Wood material 5 ... O-ring 6 ... Pressing mechanism 7 ... Vacuum pump 8 ... Packing 9 ... Through-hole 10 ... Pressurized gas source 11 ... Atmospheric release valve 12 ... Pressure control valve
Claims (4)
と共に、密閉空間(3)において、湿潤な状態で永久固定
できる温度と圧力に加熱、加圧して永久固定する方法に
おいて、 木質材を、加熱、加圧している密閉空間(3)に、空気、
窒素ガス、炭酸ガス等の水蒸気を加えない加圧気体を圧
入して密閉空間(3)を所定の圧力に加圧して木質材を永
久固定することを特徴とする木質材のプレス圧縮方法。1. A method for pressing both sides of a wooden material with a hot plate (1) and heating and pressurizing the closed space (3) to a temperature and a pressure that can be permanently fixed in a wet state, and permanently fixing the wooden material by pressing. The wood material is heated and pressurized in the enclosed space (3), air,
A press compression method for wood material, characterized in that a pressurized gas such as nitrogen gas, carbon dioxide gas or the like, to which no water vapor is added, is pressurized and the closed space (3) is pressurized to a predetermined pressure to permanently fix the wood material.
定した後、密閉空間(3)を減圧して木質材に含まれる水
分を除去する請求項１に記載される木質材のプレス圧縮
方法。2. The wooden material according to claim 1, wherein the closed space (3) is pressurized to permanently fix the wooden material, and then the enclosed space (3) is depressurized to remove water contained in the wooden material. Press compression method.
気密に密閉する状態でプレスする熱板(1)と、熱板(1)を
木質材に押圧する押圧機構(6)と、熱板(1)を所定の温度
に加熱する加熱機構とを備える木質材のプレス装置にお
いて、 密閉空間(3)に、空気、窒素ガス、炭酸ガス等の水蒸気
を加えない加圧気体を供給する加圧気体源(10)を連結し
ており、熱板(1)が密閉空間(3)で木質材をプレスする状
態で、密閉空間(3)に加圧空気を圧入し、密閉空間(3)を
所定の圧力に保持して、木質材を熱板(1)で加熱、加圧
状態でプレスして圧縮することを特徴とする木質材のプ
レス装置。3. A hot plate (1) for pressing both sides of a wood material in a hermetically sealed state with a closed space (3), and a pressing mechanism (6) for pressing the hot plate (1) against the wood material. A pressurizing device that heats the hot plate (1) to a predetermined temperature and supplies a pressurized gas that does not add water vapor such as air, nitrogen gas, carbon dioxide gas, etc. The pressurized gas source (10) is connected, and the hot plate (1) presses the wood material in the closed space (3). 3) A wooden material pressing apparatus characterized in that the wooden material is heated by a hot plate (1), pressed and compressed in a pressurized state while 3) is maintained at a predetermined pressure.
ポンプ(7)とを連結しており、加圧気体源(10)で密閉空
間(3)を加圧して、木質材を加熱状態でプレスした後、
密閉空間(3)を真空ポンプ(7)で減圧して木質材を、冷
却、乾燥させるようにしてなる請求項３に記載される木
質材のプレス装置。4. A pressurized gas source (10) and a vacuum pump (7) are connected to the closed space (3), and the closed space (3) is pressurized by the pressurized gas source (10). After pressing the wood material in a heated state,
4. The apparatus for pressing wood material according to claim 3, wherein the pressure of the closed space (3) is reduced by a vacuum pump (7) to cool and dry the wood material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4551199A JP3002197B1 (en) | 1999-02-23 | 1999-02-23 | Press compression method of wood material and press device used in this method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4551199A JP3002197B1 (en) | 1999-02-23 | 1999-02-23 | Press compression method of wood material and press device used in this method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3002197B1 true JP3002197B1 (en) | 2000-01-24 |
| JP2000238015A JP2000238015A (en) | 2000-09-05 |
Family
ID=12721450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4551199A Expired - Fee Related JP3002197B1 (en) | 1999-02-23 | 1999-02-23 | Press compression method of wood material and press device used in this method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3002197B1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006289740A (en) * | 2005-04-08 | 2006-10-26 | Hida Sangyo Kk | Lightweight light-transmitting composite panel for interior with compressed wooden frame |
| CN102107446B (en) | 2009-12-26 | 2013-09-25 | 浙江世友木业有限公司 | Surface-enhanced solid wood sectional material and manufacturing method thereof |
| CN102107447B (en) * | 2009-12-26 | 2013-07-24 | 浙江世友木业有限公司 | Wood sectional material and manufacturing method thereof |
| JP2011251486A (en) * | 2010-06-03 | 2011-12-15 | Mywood 2 Kk | Laminate plastic worked timber |
-
1999
- 1999-02-23 JP JP4551199A patent/JP3002197B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000238015A (en) | 2000-09-05 |
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