JPS5859801A - Crack arrester for wood - Google Patents
Crack arrester for woodInfo
- Publication number
- JPS5859801A JPS5859801A JP15931481A JP15931481A JPS5859801A JP S5859801 A JPS5859801 A JP S5859801A JP 15931481 A JP15931481 A JP 15931481A JP 15931481 A JP15931481 A JP 15931481A JP S5859801 A JPS5859801 A JP S5859801A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- polyethylene glycol
- aqueous solution
- water
- drying
- 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.)
- Pending
Links
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
木材は我国において古来よ)住居の建築等には欠くこと
のできないものである。木材は森林より伐採した木を製
材して板類、ひき割類、ひき角類等に分類されそれぞれ
の用途に応じ使用される。[Detailed Description of the Invention] Wood has been indispensable in the construction of houses in Japan since ancient times. Wood is made from trees felled from forests and classified into boards, groats, groats, etc., and is used according to its purpose.
樹木は伐採した段階では、その細胞中に多量の水分を含
んでおり、その後時間の経過に従って次第に水分が失わ
れていく。この蒸発、乾燥は木材の表面よシ生じ、徐々
に中心部へと向って進行していくが、この乾燥の進行状
態が適切でないと。When a tree is cut down, its cells contain a large amount of water, which gradually loses water over time. This evaporation and drying occurs on the surface of the wood and gradually progresses toward the center, but if the drying process is not appropriate.
木材に亀裂が生じいわゆるひび割れ現象−を生ずる。Cracks occur in the wood, resulting in a so-called cracking phenomenon.
すなわち、木材の組織である細胞は高い含水状態で均衡
を保っているが表面の細胞の水分が急速に蒸発する上表
面を中心部の細胞間に内部応力が生じC表面の細胞が中
心部の細胞に比べ早くに収縮するため)木材のひび割れ
状態が発生する。このひび割れは木材の強度の点でも、
又美観の点でも欠点であることけいうまでもなく、これ
を防ぐために色々な工夫がなされて来た。In other words, the cells that make up the wood structure maintain a high water content, but the moisture in the cells on the surface rapidly evaporates, creating internal stress between the cells in the center of the upper surface. (Because the wood shrinks faster than the cells), cracks in the wood occur. This crack also affects the strength of the wood.
Needless to say, it is also a drawback in terms of aesthetics, and various efforts have been made to prevent this.
例えば木材の乾燥を緩やかに行い表面から中心までの細
胞の水分を同じ割合で蒸発させることができ九ら細胞の
収縮状態は均一化されるためひび割れは生じない。そこ
で背割シと言って芯持の角材や麿丸太では表面から中心
まで半径方向に人為的に割れ目を入れ゛て芯材部分の水
分の蒸発を早める方法が用いられている。又高級品とし
ての麿丸太のなかには倉庫の中などで約2年もの間装置
し自然乾燥させ時折夛丸太表面に水分を与え急速な乾燥
を防止しているものもある。しかしこの方法でも、なお
必要にして十分な効果をあげることはできない。For example, by drying wood slowly, the moisture in the cells from the surface to the center can be evaporated at the same rate, and the shrinkage state of the cells is evened out, so no cracks occur. Therefore, a method called sewarishi is used in which cracks are artificially created in the radial direction from the surface to the center of square timbers with cores and round logs to speed up the evaporation of moisture in the core parts. In addition, some of the high-quality maro logs are left to dry naturally in warehouses for about two years, and occasionally moisture is added to the surface of the logs to prevent them from drying out too quickly. However, even with this method, it is still not possible to achieve the necessary and sufficient effect.
そこで近時住宅用高級材に於ては製材した木材の表面に
皮at設けているものもある。これは集液を木材の表面
に塗布し、通気性のある皮膜を構成することによって木
材の表面の急速な水分蒸発を抑制し徐々に乾燥させよう
とするものである。Therefore, in recent years, some high-quality materials for residential use have a skin at on the surface of the sawn wood. This method involves applying a collection liquid to the surface of the wood to form a breathable film, thereby suppressing rapid water evaporation on the surface of the wood and gradually drying it.
しかし現実Kl′i乾燥遇穆中の′tt使用されること
が多い為、II築現場でその表面にカンナをかけて利用
すると皮膜がカンナによって削りとられてしまいその後
更に乾燥すると水分蒸発を制御することができない。そ
こで建築彼にひび割れが発生するという欠点が残ってい
る。However, in reality, it is often used during drying, so if you use a planer on the surface at a construction site, the film will be scraped off by the planer, and if it is further dried afterwards, it will prevent moisture evaporation. Can not do it. There remains the drawback that cracks occur in the construction.
本発明は上述のような従来の方法の欠点を除去コールの
水溶液を木材の表面に塗布することによって乾燥後はも
ちろん乾燥過程中にカンナで削って使用して本有効にひ
び割れを防止できる薬剤を提供することを目的とする。The present invention eliminates the drawbacks of the conventional methods as described above, by applying an aqueous solution of coal to the surface of the wood, and by scraping it with a planer not only after drying but also during the drying process, this agent can effectively prevent cracks. The purpose is to provide.
本発明の実施例を説明すると、まずポリエチレングリコ
ールの化学的性質は酸化エチレンをエチレングリコール
又は水に付加重合させたものでされ、その分子量は全て
の高分子化学物と同様に平均分子量で規定されている。To explain the embodiments of the present invention, first, the chemical properties of polyethylene glycol are that ethylene oxide is added to ethylene glycol or water, and its molecular weight is defined by the average molecular weight like all polymeric chemicals. ing.
このポリエチレン本実施例としては、水と置換しゃすく
かつ吸湿性のない分子量1000のポリエチレングリコ
ールの30%水浴液を製材後の木材の表面に塗布する。In this example, a 30% water bath solution of polyethylene glycol, which has a molecular weight of 1000 and is water-replaceable and non-hygroscopic, is applied to the surface of the lumber after sawing.
この場合、麿丸大のように表面が平滑で薬液が浸潤しに
くいものは水溶液に浸漬したり、水溶液をしみこませた
布でくるみ4〜5時間放置すれば一層効果的であり、角
材ではひび割れを防止したい必要な面に充分ぬらす程度
に塗布すればよい。In this case, it is more effective to soak materials like Maromaru-dai, which have smooth surfaces and are difficult for chemical solutions to penetrate, in an aqueous solution or wrap them in a cloth soaked in the solution and leave them for 4 to 5 hours. Just apply enough to wet the surface you want to prevent.
このようにして木材にポリエチレングリコールの水浴液
を塗布した後は、木材を8隘に放置し。After applying the polyethylene glycol water bath solution to the wood in this manner, the wood was left to stand in 8 spaces.
水浴液をゆっくりとしみこませるようにして乾燥させる
8本実施例の水溶液では約1時間で完全に木材に吸収さ
れ、その後常温では木材の表面に溶は出してくることも
ない。8. The aqueous solution of this example is completely absorbed into the wood in about one hour, and after that, no solution comes out on the surface of the wood at room temperature.
このようにポリエチレングリコールが木材中に浸透して
いく過程を説明すると、木材中の水分とポリエチレング
リコール水溶液の濃度傾斜によりポリエチレングリコー
ルFiまず木材中の大きな細胞間隙に含まれる自由水の
甲に拡散する。すると細胞中の水と水溶液は平衡状態に
なろうとするため重合体は薄い細胞層の組織を通じてポ
リエチレングリコール水溶液に接しているところから次
々に内NM胞膜内に拡散し、その#度は次第に高まって
Aき議度傾1斜のなくなるまで続く。この最も良好なる
状態にまで拡散したとき木材はポリエチレングリコール
を35Xまで吸収するのである。To explain the process by which polyethylene glycol permeates into wood, polyethylene glycol Fi first diffuses into the free water contained in the large intercellular spaces in the wood due to the moisture in the wood and the concentration gradient of the polyethylene glycol aqueous solution. . Then, as the water in the cell and the aqueous solution try to reach an equilibrium state, the polymer diffuses into the inner NM cell membrane one after another from the point in contact with the polyethylene glycol aqueous solution through the thin cell layer tissue, and the degree of polymerization gradually increases. This continues until there is no more tilt. When diffused to its best conditions, wood absorbs up to 35X polyethylene glycol.
その後木材の乾燥過程で水分の蒸発は自由水から始まり
、ボリエ、チレングリコールの細胞JI中ノIIl&は
一層たかまる。そしてついにはポリエチレングリコール
だけが細胞膜中に連続して拡散し念状態で保持されるの
で木材の乾燥後も吸湿時(乾燥前)の膨満状態を保つこ
とができひび割れは生じない。After that, during the drying process of the wood, evaporation of water starts from free water, and the cell JI and IIl of bolier and ethylene glycol further accumulates. Finally, only the polyethylene glycol is continuously diffused into the cell membrane and maintained in a stable state, so that even after the wood dries, it can maintain its swollen state when absorbing moisture (before drying), and no cracks will occur.
このように本実施例に於ては、ポリエチレングリコール
の30%の水溶液を用いたが、水溶液は15X〜4ON
の範囲で選択でき、かつ分子量も1000に限らず40
0〜7000の範囲で選択できるのである。上述の如く
構成し使用する本実施例の効果は、ポリエチレングリコ
ールが木材の内部へと浸透していくため、建築稜も半永
久的に効果を有し、表面をカンナ等で削っても影譬され
ず、木材の含水率の高い場合は勿論低い場合も容易に使
用できると共に水溶液の浸透が短い時間で行われるため
大量の製材に迅、速なひび割れ防止力a工を施し高い価
値を付与することができる。In this example, a 30% aqueous solution of polyethylene glycol was used;
The molecular weight is not limited to 1000 but can be selected within the range of 40.
It can be selected within the range of 0 to 7000. The effect of this example constructed and used as described above is that since the polyethylene glycol penetrates into the interior of the wood, it has a semi-permanent effect even on architectural ridges, and will not be affected even if the surface is scraped with a plane etc. First, it can be easily used when the moisture content of wood is high or low, and the aqueous solution penetrates in a short time, so it can quickly and quickly apply crack prevention to large quantities of lumber, giving it high value. I can do it.
以上述べたように本発明のp旨とするところFi。As mentioned above, the purpose of the present invention is Fi.
分子量400〜7000のポリエチレングリコールの1
5%〜40%水溶液からなる木材のひび割れ防止剤であ
るから、容易、迅速な作業で半永久的なひびわれ防止効
果を奏するものである、特許出願人 青森佳穂
伏理人 弁理士 1)中 二 部 。1 of polyethylene glycol with a molecular weight of 400 to 7000
Since it is a wood crack prevention agent consisting of a 5% to 40% aqueous solution, it has a semi-permanent crack prevention effect with easy and quick work.Patent applicant: Kaho Aomori Patent Attorney 1) Junior High School 2 Department .
外1名1 other person
Claims (1)
5X〜40511’水溶液よりなる木材のひび割れ防止
剤。Polyethylene glycol with a molecular weight of 400 to 7000
A wood crack prevention agent consisting of an aqueous solution of 5X to 40511'.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15931481A JPS5859801A (en) | 1981-10-06 | 1981-10-06 | Crack arrester for wood |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15931481A JPS5859801A (en) | 1981-10-06 | 1981-10-06 | Crack arrester for wood |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5859801A true JPS5859801A (en) | 1983-04-09 |
Family
ID=15691084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15931481A Pending JPS5859801A (en) | 1981-10-06 | 1981-10-06 | Crack arrester for wood |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5859801A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62114706U (en) * | 1986-01-09 | 1987-07-21 | ||
JPH02188202A (en) * | 1989-01-18 | 1990-07-24 | Ooshika Shinko Kk | Manufacture of decorative veneer |
WO1991007261A1 (en) * | 1989-11-13 | 1991-05-30 | Miyagiken | Drying method for wood or the like |
JP2016074131A (en) * | 2014-10-06 | 2016-05-12 | 義美 堀内 | Wood shape stability preservation treatment agent and preservation treatment method |
JP2019188611A (en) * | 2018-04-18 | 2019-10-31 | パナソニックIpマネジメント株式会社 | Resin-containing wooden material and method for manufacturing the same |
-
1981
- 1981-10-06 JP JP15931481A patent/JPS5859801A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62114706U (en) * | 1986-01-09 | 1987-07-21 | ||
JPH02188202A (en) * | 1989-01-18 | 1990-07-24 | Ooshika Shinko Kk | Manufacture of decorative veneer |
WO1991007261A1 (en) * | 1989-11-13 | 1991-05-30 | Miyagiken | Drying method for wood or the like |
JP2016074131A (en) * | 2014-10-06 | 2016-05-12 | 義美 堀内 | Wood shape stability preservation treatment agent and preservation treatment method |
JP2019188611A (en) * | 2018-04-18 | 2019-10-31 | パナソニックIpマネジメント株式会社 | Resin-containing wooden material and method for manufacturing the same |
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