JP2928800B2 - Wood treatment method - Google Patents
Wood treatment methodInfo
- Publication number
- JP2928800B2 JP2928800B2 JP33734190A JP33734190A JP2928800B2 JP 2928800 B2 JP2928800 B2 JP 2928800B2 JP 33734190 A JP33734190 A JP 33734190A JP 33734190 A JP33734190 A JP 33734190A JP 2928800 B2 JP2928800 B2 JP 2928800B2
- Authority
- JP
- Japan
- Prior art keywords
- wood
- chemical solution
- state
- chemical
- pressed
- 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 - Fee Related
Links
- 239000002023 wood Substances 0.000 title claims description 82
- 238000000034 method Methods 0.000 title claims description 12
- 238000011282 treatment Methods 0.000 title description 5
- 239000000126 substance Substances 0.000 claims description 41
- 229920006395 saturated elastomer Polymers 0.000 claims description 10
- 238000009931 pascalization Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 26
- 238000010438 heat treatment Methods 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004061 bleaching Methods 0.000 description 3
- 238000004040 coloring Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 241000256602 Isoptera Species 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000855 fungicidal effect Effects 0.000 description 2
- 239000000417 fungicide Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000077 insect repellent Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- -1 antiseptic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、木材の薬液含浸による難燃、防腐、防虫、
防黴、防蟻、漂白、着色や、樹脂注入による強化などと
いった処理に利用される木材の処理方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to flame retardant, preservative, insect repellent,
The present invention relates to a method for treating wood used for treatments such as fungicide, termite prevention, bleaching, coloring, and strengthening by resin injection.
［従来の技術］ 一般に、木材は素材のままでは耐朽性、耐虫性、耐熱
性、強度が低いとか、色調が不均一などといろいろな欠
点があり、使用の目的に不都合なことがあるので、薬液
の含浸による難燃、防腐、防虫、防黴、防蟻、漂白、着
色や、樹脂の注入による強化などといった処理が行なわ
れる。[Prior art] In general, wood itself has various drawbacks such as decay resistance, insect resistance, heat resistance, low strength, and uneven color tone, which may be inconvenient for the purpose of use. In addition, treatments such as flame retardation by impregnation with a chemical, antiseptic, insect repellent, fungicide, termite repellent, bleaching, coloring, and strengthening by resin injection are performed.
従来、木材に薬液を含浸する方法として、木材を密閉
した容器内に入れた後、この容器内を真空にして木材表
面および内部の空気、水分、その他を活発に抜き取り、
次に容器内に含浸させたい薬液を流入してから、容器内
に高圧をかけて強制的に木材の内部へ薬液を浸透させる
ことにより含浸するものがある。Conventionally, as a method of impregnating wood with a chemical solution, after putting the wood in a closed container, the inside of this container is evacuated and the wood surface and the inside air, moisture, etc. are actively extracted,
Next, there is a type in which a chemical solution to be impregnated is introduced into a container, and then a high pressure is applied to the inside of the container to forcibly penetrate the inside of the wood with the chemical solution to impregnate the wood.
［発明が解決しようとする課題］ ところで、上記従来の方法では、容器内を真空にして
木材表面および内部の空気、水分、その他を活発に抜き
取るようにしているが、木材内部の空気、水分、その他
を真空により吸い出して抜き取るとなると、非常に長い
時間（数時間〜数十時間）がかかり非能率的であり、製
品のコスト上昇の原因となる問題がある。また、真空に
よる空気の吸い出しでは、木材内部の空気を完全に抜き
出すことが非常に困難であり、木材内部に残った空気が
薬液の浸透に悪影響を与え、高品質な製品を得ることが
できない問題があり、高品質な製品を得るには充分でな
いのが実情である。[Problems to be Solved by the Invention] By the way, in the above-mentioned conventional method, the inside of the vessel is evacuated to actively extract air, moisture and the like on the surface and inside of the wood. If the others are sucked out and extracted by a vacuum, it takes a very long time (several hours to several tens of hours), which is inefficient and raises the cost of the product. In addition, it is very difficult to completely extract the air inside the wood by suctioning the air by vacuum, and the air remaining inside the wood has a bad influence on the penetration of the chemical solution, and a high quality product cannot be obtained. However, it is not enough to obtain high quality products.
本発明は、上記問題点に鑑みてなされたもので、効率
の良い処理ができ、しかも、高品質な製品を得ることが
できる木材の処理方法を提供することを目的とする。The present invention has been made in view of the above problems, and an object of the present invention is to provide a method of treating wood that can perform efficient treatment and can obtain a high-quality product.
［発明が解決しようとする課題］ 本発明は、上記目的を達成するため、木材を飽水状態
で、高温、かつ、高圧の処理容器内に置いて加熱・軟化
させ、この木材をプレスして水分を押圧した状態で、薬
液を注入・浸漬した後、薬液中で木材のプレス状態を開
放して木材の復元力を利用して木材内部に薬液を吸込ま
せ、更に、その状態で処理容器内を加圧して木材内部の
微細部に薬液を注入する木材の処理方法を提供する。[Problems to be Solved by the Invention] In order to achieve the above object, the present invention heats and softens wood by placing it in a saturated, high-temperature, and high-pressure processing vessel and presses the wood. After the chemical is injected and immersed in a state where the water is pressed, the pressed state of the wood is released in the chemical to allow the chemical to be sucked into the wood using the restoring force of the wood, and furthermore, in the processing container in that state. To provide a method of treating wood by injecting a chemical solution into a fine portion inside the wood by pressing the wood.
［作用］ 本発明方法によれば、木材を飽水状態にして加熱・軟
化させた後、プレスして水分を強制的に押出させるか
ら、木材内部の空気、水分、その他を短時間で押出すこ
とができる。また、薬液中で木材のプレス状態を開放す
るから、木材の復元力で内部に薬液が積極的に吸い込ま
れるとともに、その状態で処理容器内を加圧して薬液に
圧力をかけるから、木材内の微細部分に薬液が押込まれ
てより完全に浸透する。[Action] According to the method of the present invention, after the wood is heated and softened in a saturated state, the water is forcibly extruded by pressing, so that the air, moisture, etc. inside the wood are extruded in a short time. be able to. In addition, since the pressed state of the wood is released in the chemical solution, the chemical solution is positively sucked into the interior by the restoring force of the wood, and in that state, the processing vessel is pressurized to apply pressure to the chemical solution. The chemical solution is pushed into the fine parts and penetrates more completely.
［実施例］ 第１図は本発明に係る方法を実施する装置の一例を示
す概略構成図であって、（１）は高温、かつ、高圧の処
理容器、（２）は加熱手段、（３）はプレス機、（４）
は準備槽、（５）は給液管、（６）は木材、（７）は薬
液を示す。Embodiment FIG. 1 is a schematic configuration diagram showing an example of an apparatus for performing a method according to the present invention, wherein (1) is a high-temperature and high-pressure processing vessel, (2) is a heating means, and (3) ) Is a press machine, (4)
Indicates a preparation tank, (5) indicates a liquid supply pipe, (6) indicates wood, and (7) indicates a chemical solution.
処理容器（１）は、高強度の鋼またはステンレスで作
った高温、かつ、高圧の容器からなり、開口部に開閉可
能な扉（図示せず）を備え、かつ、内部に加熱手段
（２）を備えており、配管（８）を通して高圧（20kg/c
m2・Ｇ）の空気、その他の気体が内部に導入され、か
つ、配管（９）を通して内部のドレン等が外部に排出さ
れる。The processing container (1) is made of a high-temperature and high-pressure container made of high-strength steel or stainless steel, is provided with an openable and closable door (not shown) at an opening, and has heating means (2) inside. And high pressure (20kg / c) through piping (8)
m 2 · G) of air and other gases are introduced into the interior, and the internal drain and the like are discharged to the outside through the pipe (9).
加熱手段（２）は、マイクロ波加熱器又はその他の加
熱器で構成されており、処理容器（１）内に収容された
木材（６）を高温（60〜200℃）に加熱する。The heating means (2) is constituted by a microwave heater or another heater, and heats the wood (6) contained in the processing vessel (1) to a high temperature (60 to 200 ° C).
プレス機（３）は、処理容器（１）内で上下に対向は
位置された溝型の下型（10）およびこの下型（９）内に
嵌合し得る板状の上型（11）と、これらの一方、例えば
上型（11）を上下方向に往復プレス運動するプレスシリ
ンダー（12）で構成されており、プレスシリンダー（1
2）で上型（11）を加圧降下することにより、下型（1
0）に載置支持された木材（６）をプレスする。The press machine (3) includes a groove-shaped lower mold (10) which is vertically opposed in the processing vessel (1) and a plate-shaped upper mold (11) which can be fitted into the lower mold (9). And a press cylinder (12) for reciprocating press movement of an upper die (11) in the vertical direction.
By lowering the upper die (11) with 2), the lower die (1
The wood (6) placed and supported on 0) is pressed.
準備槽（４）は、開閉可能な密閉型の高温、かつ、高
圧容器からなり、処理容器（１）の上方に配置されてお
り、内部には木材（６）に含浸する薬液（７）が貯溜さ
れ、配管（13）を通して内部に加圧用の空気、その他の
気体が導入され、かつ、配管（15）を通して薬液（７）
が加熱される。The preparation tank (4) is a closed high-temperature, high-pressure container that can be opened and closed, is disposed above the processing container (1), and contains a chemical solution (7) impregnating wood (6). It is stored, pressurized air or other gas is introduced into the inside through a pipe (13), and a chemical solution (7) is passed through a pipe (15).
Is heated.
給液管（５）は、処理容器（１）とその上方に配置さ
れた準備槽（４）とを連通するように配設され、途中に
設けた開閉弁（14）を開くことにより準備槽（４）内に
貯溜されている薬液（７）を処理容器（１）内に注入す
る。The liquid supply pipe (5) is disposed so as to communicate the processing vessel (1) and the preparation tank (4) disposed above the processing vessel (1), and opens and closes the on-off valve (14) provided on the way to prepare the preparation tank. The chemical solution (7) stored in (4) is injected into the processing container (1).
次に、本発明における木材の処理方法について説明す
る。Next, a method for treating wood in the present invention will be described.
先ず、処理する木材（６）を適宜の手段で飽水状態に
する。この木材（６）を処理容器（１）内に入れてプレ
ス機（３）の下型（10）に載置支持する。次いで、処理
容器（１）の扉を閉じて当該処理容器（１）を密封した
後、処理容器（１）内の木材（６）を加熱手段（２）で
例えばマイクロ波加熱で木材（６）を所定時間（数秒〜
数十分）加熱すると、木材（６）は内部に吸収している
水分の温度が上昇し、これによって軟化する。また、配
管（８）を通して高圧の気体を導入し、木材（６）内の
空気を押出しやすくする。そして木材（６）が軟化すれ
ば、プレス機（３）のプレスシリンダー（12）で上型
（11）を加圧降下させ、この上型（11）の圧力にて下型
（10）に載置支持されている木材（６）を、第２図に示
すように、断面積比が1/2〜1/3程度になるようにプレス
する。このようにして木材（６）をプレス機（３）で断
面積比が1/2〜1/3程度になるようにプレスすると、木材
（６）の中にある空洞部分が微細に圧縮されると同時
に、空洞部分に含まれている空気、水分、その他が押出
され、木材（６）は空気、水分、その他が絞り出された
状態になる。そして木材（６）から絞り出されて処理容
器（１）内に溜まった水分等を配管（９）を通して排出
した後、配管（13）を通して準備槽（４）内に加圧用の
気体を導入して準備槽（４）内を処理容器（１）と同圧
に加圧すると同時に、給液管（５）の途中に設けた開閉
弁（14）を開いて準備槽（４）内に貯留されている任意
に昇温された薬液（７）を給液管（５）を通して処理容
器（１）内に注入する。すると処理容器（１）内のプレ
ス機（３）にプレスされた状態の木材（６）が、第３図
に示すように、薬液（７）中に浸漬される。この状態
で、プレス機（３）のプレスシリンダー（12）で上型
（11）を下型（10）から離すように上昇させて木材
（６）のプレス状態を開放すれば、第４図に示すよう
に、木材（６）がプレス前の状態に復元して当該木材
（６）の中にある空洞部分が膨張するから、空洞部分に
薬液（７）が吸込まれて木材（６）の内部に薬液（７）
が含浸される。通常、これにより木材（６）の内部に薬
液（７）を含浸することができるが、必要に応じてプレ
ス機（３）で木材（６）のプレスと開放を数回繰返す
と、木材（６）の内部に薬液（７）をより含浸すること
ができる。このようにして木材（６）の内部に薬液
（７）を含浸すれば、処理容器（１）内に配管（８）を
通して高圧の気体を導入し、処理容器（１）内の薬液
（７）を加圧する。すると、木材（６）の内部の微細部
にも薬液（７）がさらに押込まれると同時に、木材
（６）の中にもし空気が残っていれば、薬液（７）の圧
力で空気が押出されるから、木材（６）の内部へ薬液
（７）をより完全に含浸し得る。First, the wood (6) to be treated is made saturated by appropriate means. The wood (6) is put into the processing vessel (1) and placed and supported on the lower mold (10) of the press (3). Next, after closing the door of the processing container (1) by closing the door of the processing container (1), the wood (6) in the processing container (1) is heated by the heating means (2), for example, by microwave heating. For a predetermined time (several seconds ~
Upon heating (several tens of minutes), the temperature of the moisture absorbed in the wood (6) rises, thereby softening the wood (6). In addition, a high-pressure gas is introduced through the pipe (8) so that the air in the wood (6) can be easily extruded. When the wood (6) is softened, the upper mold (11) is pressurized and lowered by the press cylinder (12) of the press machine (3), and is placed on the lower mold (10) by the pressure of the upper mold (11). The supported wood (6) is pressed so that the sectional area ratio becomes about 1/2 to 1/3 as shown in FIG. When the wood (6) is pressed by the press (3) so that the cross-sectional area ratio becomes about 1/2 to 1/3, the hollow portion in the wood (6) is finely compressed. At the same time, the air, moisture and the like contained in the hollow portion are extruded, and the wood (6) is in a state where the air, moisture and the like are squeezed out. After the water and the like squeezed out of the wood (6) and accumulated in the processing vessel (1) are discharged through the pipe (9), a pressurizing gas is introduced into the preparation tank (4) through the pipe (13). At the same time, the inside of the preparation tank (4) is pressurized to the same pressure as the processing vessel (1), and at the same time, the on-off valve (14) provided in the middle of the liquid supply pipe (5) is opened to store the liquid in the preparation tank (4). The arbitrarily heated chemical solution (7) is injected into the processing vessel (1) through the liquid supply pipe (5). Then, the wood (6) pressed by the press (3) in the processing vessel (1) is immersed in the chemical (7) as shown in FIG. In this state, if the upper mold (11) is lifted by the press cylinder (12) of the press machine (3) so as to separate from the lower mold (10) and the pressed state of the wood (6) is released, FIG. As shown in the figure, the wood (6) is restored to the state before pressing and the hollow portion in the wood (6) expands, so that the chemical solution (7) is sucked into the hollow portion and the interior of the wood (6) is opened. To chemical solution (7)
Is impregnated. Usually, this allows the chemical (7) to be impregnated into the interior of the wood (6), but if the pressing and opening of the wood (6) is repeated several times with the press machine (3) as necessary, the wood (6) can be impregnated. ) Can be further impregnated with the chemical solution (7). When the chemical (7) is impregnated into the wood (6) in this manner, a high-pressure gas is introduced into the processing vessel (1) through the pipe (8), and the chemical (7) in the processing vessel (1) is introduced. Press. Then, the chemical solution (7) is further pushed into the fine portion inside the wood (6), and at the same time, if air remains in the wood (6), the air is extruded by the pressure of the chemical solution (7). Therefore, the chemical (7) can be more completely impregnated into the interior of the wood (6).
上記実施例のように、木材（６）を飽水状態で加熱し
て軟化し、これをプレスして強制的に空気、水分、その
他を押出した状態で薬液（７）中に浸漬した後、プレス
状態を開放して木材（６）の復元力を利用して木材
（６）の内部に薬液（７）を吸込ませ、更に、この状態
で薬液（７）を加圧して木材（６）の内部の微細部に押
込ませれば、木材（６）中へ薬液（７）を従来に比べて
大幅に短時間で、しかも、より完全に含浸することがで
きる。As in the above embodiment, the wood (6) is heated and softened in a saturated state, and is pressed and immersed in a chemical solution (7) in a state where air, moisture, etc. are forcibly extruded. The pressed state is released, the chemical (7) is sucked into the wood (6) by using the restoring force of the wood (6), and the chemical (7) is further pressurized in this state to press the wood (6). If it is pushed into the fine part inside, the chemical solution (7) can be impregnated into the wood (6) in a much shorter time and more completely than before.
第５図は木材（６）が丸太の場合の変形例で、第１図
の装置と同じ要領で処理するものであり、第１図と同じ
部材には同じ符号を付して説明を省略する。FIG. 5 shows a modified example in the case where the wood (6) is a log, which is processed in the same manner as the apparatus of FIG. 1, and the same members as those in FIG. .
尚、上記実施例では、飽水状態（短時間で飽水状態に
するには蒸煮（60〜80℃）すると良い）の木材を所定の
時間加熱することにより木材を軟化しているが、これ以
外に、例えば木材を高温、かつ、高圧の水蒸気雰囲気中
に所定時間（数秒〜数十分）置いて木材を軟化するよう
にしても良い。In the above embodiment, the wood is softened by heating the wood in a saturated state (steaming (60 to 80 ° C. is recommended to make the state saturated in a short time) for a predetermined time. Alternatively, for example, the wood may be softened by placing the wood in a high-temperature and high-pressure steam atmosphere for a predetermined time (several seconds to several tens of minutes).
また、上記実施例では、木材を蒸煮して飽水状態にし
ているが、これ以外の適宜の方法で木材を飽水状態にし
ても良い。Further, in the above embodiment, the wood is steamed to make it saturated, but the wood may be made to be saturated by any other appropriate method.
［発明の効果］ 以上説明したように、本発明方法によれば、木材の含
浸、漂白、着色、脱水等の処理をするに当って、木材を
飽水状態で加熱して軟化し、これをプレスして強制的に
空気、水分、その他を押出した状態で薬液中に浸漬した
後、プレス状態を開放して木材の復元力を利用して木材
の内部に薬液を吸い込ませ、更に、この状態で薬液を加
圧して木材内部の微細部に押込ませるから、従来に比べ
て処理時間が大幅に短縮され、しかも、木材の内部に薬
液をより完全に浸透することができて高品質な製品を得
ることができる。また、生木を乾燥する際、同様の手法
で加熱して軟化させた後、プレスして木材内部の水分を
完全に押出すことによって乾燥効率を大幅に向上させる
ことができる。[Effects of the Invention] As described above, according to the method of the present invention, in the treatment of wood impregnation, bleaching, coloring, dehydration, etc., the wood is heated in a saturated state to soften it, Press and forcibly extrude air, moisture, etc. into the chemical solution while extruding it, then release the pressed state and use the restoring force of the wood to suck the chemical solution inside the wood, and furthermore, in this state The chemical solution is pressurized and pressed into the fine parts inside the wood, which greatly reduces the processing time compared to the past, and also allows the chemical solution to more completely penetrate into the wood, resulting in high quality products. Obtainable. Moreover, when drying a raw wood, it is heated and softened in the same manner, and then pressed to completely extrude the water inside the wood, thereby greatly improving the drying efficiency.
第１図は本発明の木材の処理方法に実施する装置の一例
を示す概略構成図、第２図乃至第４図は処理工程を示す
説明図である。第５図は第１図の変形例を示す概略構成
図である。 （１）……処理容器、（２）……加熱手段、 （３）……プレス機、（４）……準備槽、 （５）……給液管、（６）……木材、 （７）……薬液。FIG. 1 is a schematic configuration diagram showing an example of an apparatus used in the method for processing wood of the present invention, and FIGS. 2 to 4 are explanatory views showing processing steps. FIG. 5 is a schematic configuration diagram showing a modification of FIG. (1) processing container, (2) heating means, (3) press machine, (4) preparation tank, (5) liquid supply pipe, (6) wood, (7) ) …… Chemical solution.
Claims (1)
理容器内に置いて加熱・軟化させ、この木材をプレスし
て水分を押圧した状態で、薬液を注入・浸漬した後、薬
液中で木材のプレス状態を開放して木材の復元力を利用
して木材内部に薬液を吸込ませ、更に、その状態で処理
容器内を加圧して木材内部の微細部に薬液を注入するこ
とを特徴とする木材の処理方法。Claims: 1. A wood is placed in a high-temperature, high-pressure processing vessel in a saturated state, heated and softened, and a chemical is injected and immersed in a state where the wood is pressed to press moisture. Release the pressed state of the wood in the chemical solution and use the restoring force of the wood to suck the chemical solution into the wood, and then pressurize the inside of the processing vessel and inject the chemical solution into the fine parts inside the wood in that state A method for processing wood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33734190A JP2928800B2 (en) | 1990-11-30 | 1990-11-30 | Wood treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33734190A JP2928800B2 (en) | 1990-11-30 | 1990-11-30 | Wood treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04201504A JPH04201504A (en) | 1992-07-22 |
| JP2928800B2 true JP2928800B2 (en) | 1999-08-03 |
Family
ID=18307720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33734190A Expired - Fee Related JP2928800B2 (en) | 1990-11-30 | 1990-11-30 | Wood treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2928800B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09174514A (en) * | 1995-12-27 | 1997-07-08 | Jiyuuken Sangyo:Kk | Surface reinforcing method of wood |
-
1990
- 1990-11-30 JP JP33734190A patent/JP2928800B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04201504A (en) | 1992-07-22 |
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