JP2001207556A - Floor substrate board and floor substrate structure - Google Patents

Floor substrate board and floor substrate structure

Info

Publication number
JP2001207556A
JP2001207556A JP2000016660A JP2000016660A JP2001207556A JP 2001207556 A JP2001207556 A JP 2001207556A JP 2000016660 A JP2000016660 A JP 2000016660A JP 2000016660 A JP2000016660 A JP 2000016660A JP 2001207556 A JP2001207556 A JP 2001207556A
Authority
JP
Japan
Prior art keywords
moisture
floor
floor substrate
airtight sheet
fiber board
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
Application number
JP2000016660A
Other languages
Japanese (ja)
Inventor
Akira Shimamura
明 島村
Original Assignee
Noda Corp
株式会社ノダ
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 Noda Corp, 株式会社ノダ filed Critical Noda Corp
Priority to JP2000016660A priority Critical patent/JP2001207556A/en
Publication of JP2001207556A publication Critical patent/JP2001207556A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To prevent the corrosion of a floor substrate board due to multiplication of decay bacteria by maintaining the floor substrate board in a low moisture condition and to prevent the harm caused by a harmful insect such as termites. SOLUTION: This floor substrate board is constituted by arranging a moisture-proof airtight sheet 3 on a rear surface of a plywood 1 through a wooden fiber board 2 having a hard layer on at least one face, and by bringing the hard layer of the wooden fiber board into contact with the moisture-proof airtight sheet. This floor substrate board is constructed on a structural member by setting the moisture-proof airtight sheet to be faced on dirt floor to constitute a floor substrate structure.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は床下地板および該床
下地板を構造材に施工してなる床下地構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor board and an underfloor structure obtained by applying the underfloor board to a structural material.
【0002】[0002]
【従来の技術】建築途中の住宅の居室に対して床材を施
工する際には、根太上に合板等を床下地板として施工し
た後、該床下地板上に各種床材を敷設することが行われ
ている。
2. Description of the Related Art When laying floor materials in a living room of a house under construction, it is necessary to lay plywood or the like as a floor base plate on a joist and then lay various floor materials on the floor base plate. Have been done.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな従来技術によると、床下地板が吸湿したときに、湿
度が高い場所を好む腐朽菌が増殖して床下地板を腐朽さ
せるという問題が生じている。
However, according to such a conventional technique, when the floor base plate absorbs moisture, there is a problem that rot fungi preferring a place with high humidity grow and rot the floor base plate. .
【0004】また、このような高湿度の床下地板が白ア
リ等の害虫による食害を受けて崩壊することがあった。
[0004] In addition, such a high-humidity floor substrate sometimes collapses by being damaged by insects such as termites.
【0005】[0005]
【課題を解決するための手段】そこで本発明は、従来技
術における上記問題を解決することのできる新規な構成
の床下地板を提供すると共に、この床下地板を構造材に
施工してなる床下地構造を提供することを目的とする。
SUMMARY OF THE INVENTION Accordingly, the present invention provides a floor base plate having a novel structure capable of solving the above-mentioned problems in the prior art, and a floor base structure formed by applying the floor base plate to a structural material. The purpose is to provide.
【0006】すなわち本発明による床下地板は、合板の
裏面に、少なくとも片面に硬質層を有する木質繊維板を
介して防湿気密シートを配すると共に、該木質繊維板の
硬質層を防湿気密シートと接するようにして構成され
る。
That is, in the floor substrate according to the present invention, a moisture-proof airtight sheet is arranged on the back surface of the plywood via a wood fiber board having a hard layer on at least one side, and the hard layer of the wood fiber board is brought into contact with the moisture-proof airtight sheet. It is constituted as follows.
【0007】また、本発明による床下地構造は、合板の
裏面に、少なくとも片面に硬質層を有する木質繊維板を
介して防湿気密シートを配すると共に、該木質繊維板の
硬質層を防湿気密シートと接するようにして構成される
床下地板を、防湿気密シートが床下側となるように構造
材に施工してなるものである。
[0007] In the floor base structure according to the present invention, a moisture-proof airtight sheet is disposed on the back surface of a plywood via a wood fiber board having a hard layer on at least one side, and the hard layer of the wood fiber board is bonded to the moisture-proof airtight sheet. And a floor base plate constructed so as to be in contact with the structural member so that the moisture-proof airtight sheet is located below the floor.
【0008】[0008]
【発明の実施の形態】本発明の実施の一形態による床下
地板の構成が図1に示されており、合板1の裏面に、少
なくとも裏面側に硬質層を有する木質繊維板2を介して
防湿気密シート3が配され、木質繊維板2の硬質層が防
湿気密シート3と接するようにして構成されている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the structure of a floor substrate according to an embodiment of the present invention. The floor substrate is provided on the back of a plywood 1 with a wood fiber board 2 having a hard layer at least on the back side. The airtight sheet 3 is provided, and the hard layer of the wood fiber board 2 is configured to be in contact with the moistureproof airtight sheet 3.
【0009】合板は曲げ強度が大きく、撓みにくい性質
を有しており、広葉樹単板または針葉樹単板を奇数枚、
それら単板同士の繊維方向が直交するように積層され
て、任意の接着剤で接着されてなるものである。
The plywood has a high bending strength and a property that it is difficult to bend, and an odd number of hardwood veneers or softwood veneers are used.
The veneers are laminated so that the fiber directions of the veneers are orthogonal to each other, and are bonded with an arbitrary adhesive.
【0010】木質繊維板は広葉樹または針葉樹の原木を
切削した木材チップを解繊して得られる木質繊維を圧締
成形することによって一般に製造されるが、本発明で
は、少なくともその片面に硬質層を形成されたものが用
いられる。この硬質層は木質繊維をフォーミングして得
られる繊維マットを圧締成形するときに形成され、比重
が高く硬質であって吸湿性が低い。
[0010] The wood fiber board is generally manufactured by press-molding wood fibers obtained by defibrating wood chips obtained by cutting a hardwood or softwood base wood. In the present invention, a hard layer is formed on at least one surface thereof. The formed one is used. This hard layer is formed when a fiber mat obtained by forming a wood fiber is pressed and formed, and has a high specific gravity, is hard, and has low hygroscopicity.
【0011】木質繊維板としては比重が0.6〜1.1
程度のものを用いることが好ましい。比重が0.6より
も小さくなると床下地板として用いたときに荷重に対す
る強度が小さくなって実用に適さないものとなり、逆に
比重が1.1を越えるようになると重量増を招いて床下
地材の施工の際の運搬や取扱が困難になってしまう。
The specific gravity of the wood fiber board is 0.6 to 1.1.
It is preferable to use a material having a size of about. When the specific gravity is less than 0.6, the strength against load becomes small when used as a floor substrate, making it unsuitable for practical use. Conversely, when the specific gravity exceeds 1.1, the weight increases and the floor substrate material increases. It becomes difficult to transport and handle during construction.
【0012】木質繊維板の厚さは床下地板の全体厚さの
約50%を越えないようにすることが好ましい。木質繊
維板が床下地板の全体厚さの過半を占めるようになる
と、木質繊維板の吸湿による寸法変化を合板で拘束する
ことが困難となって床下地板に反りを生じさせる原因と
なる。
Preferably, the thickness of the wood fiber board does not exceed about 50% of the total thickness of the floorboard. When the wood fiber board occupies a majority of the entire thickness of the floor base board, it becomes difficult to restrain the dimensional change due to moisture absorption of the wood fiber board with the plywood, causing the floor base board to warp.
【0013】防湿気密シートとは液体である水分や気体
である水蒸気、湿気を通さず且つ気密性を有するシート
であり、たとえばアルミニウム箔やアルミニウム蒸着層
等で構成される芯層の表裏に、ポリエチレンテレフタレ
ート(PET)樹脂、塩化ビニル樹脂、ポリプロピレン
樹脂、ポリエチレン樹脂等の合成樹脂で構成される樹脂
層が設けられてなる3層構造の積層シートを用いること
ができる。ただしこれは本発明で用い得る防湿気密シー
トの一例にすぎず、これに限定されるものではなく、防
湿性および気密性を有するシートであれば任意のものを
使用することができる。
The moisture-proof airtight sheet is an airtight sheet that is impermeable to liquid water and gaseous water vapor and moisture, and is made of, for example, polyethylene foil on the front and back of a core layer composed of an aluminum foil or an aluminum vapor-deposited layer. A laminated sheet having a three-layer structure provided with a resin layer made of a synthetic resin such as a terephthalate (PET) resin, a vinyl chloride resin, a polypropylene resin, or a polyethylene resin can be used. However, this is only an example of the moisture-proof airtight sheet that can be used in the present invention, and the present invention is not limited to this. Any sheet can be used as long as it is moisture-proof and airtight.
【0014】本発明の床下地板はこれら合板1、木質繊
維板2および防湿気密シート3を接着剤で接着積層一体
化して得られるが、木質繊維板は木材チップを解繊して
得られる木質繊維を圧締して製造されるものであり、天
然木材を人為的に再構成して得られるものであるため、
ばらつきがなく安定した品質および強度を有しており、
このような木質繊維板を床下地板を構成する材の一部と
して用いることにより一定の品質や強度を有する床下地
板を比較的安価に且つ安定して供給することを可能にし
ている。また、木質繊維板は均質ではあるが撓みやすく
吸放湿による寸法変化率が比較的大きいという弱点を有
しているが、これを合板と積層して用いることによって
その形状変化や寸法変化を合板で拘束し、全体として反
りや寸法変化を生じにくい床下地板とすることができ
る。
The floor substrate of the present invention is obtained by bonding and laminating the plywood 1, the wood fiber board 2 and the moisture-proof airtight sheet 3 with an adhesive, and the wood fiber board is made of wood fibers obtained by defibrating wood chips. It is manufactured by pressing, and is obtained by artificially reconstructing natural wood,
Has stable quality and strength without variation,
By using such a wood fiber board as a part of the material constituting the floor substrate, it is possible to supply a floor substrate having a certain quality and strength at a relatively low cost and stably. In addition, wood fiber board is homogeneous, but has the disadvantage that it is easy to bend and the dimensional change rate due to moisture absorption and desorption is relatively large, but by using this laminated with plywood, the shape change and dimensional change can be reduced. And the floor base plate is hardly warped or changed in size as a whole.
【0015】木質繊維板の硬質層は上述のように硬質で
あるため白アリの食害を防止する作用に優れると共に高
比重であって吸湿性が低いという特性を活用するため
に、図示のように、木質繊維板2を合板の裏面側、すな
わち床下側に積層し、且つ、その硬質層と接するように
さらに裏面側(床下側)に防湿気密シート3を積層する
ことが本発明において必須の要件となっている。
Since the hard layer of the wood fiber board is hard as described above, it is excellent in the action of preventing termites from being damaged, and has a high specific gravity and a low hygroscopic property. It is an essential requirement of the present invention that the wood fiber board 2 be laminated on the back side of the plywood, that is, under the floor, and that the moisture-proof airtight sheet 3 be further laminated on the back side (under the floor) so as to be in contact with the hard layer. It has become.
【0016】このように構成された床下地板を、防湿気
密シート3が下面(床下側)になるように根太等の構造
材上に施工して床下地構造が得られ、該床下地上に床材
を施工するものである。
The floor substrate thus constructed is applied to a structural material such as a joist such that the moisture-proof airtight sheet 3 is on the lower surface (under the floor) to obtain a floor substrate structure, and the floor material is placed on the floor substrate. Is to be constructed.
【0017】以上に説明したような構成の床下地板にお
いては、床下側に設けられた防湿気密シート3によっ
て、床下から上がってくる湿気が木質繊維板2および合
板1側に移動することが防止されるため、腐朽菌の繁殖
・増殖を防止し、もって床下地板の腐朽を防止する。
In the floor substrate having the above-described structure, moisture coming from under the floor is prevented from moving to the wood fiber board 2 and the plywood 1 by the moisture-proof airtight sheet 3 provided under the floor. Therefore, the propagation and proliferation of the decay fungi are prevented, thereby preventing the decay of the floor substrate.
【0018】さらに、床下側に設けられた防湿気密シー
ト3および木質繊維板2の硬質層が白アリの食害を物理
的に防止することに加えて、上記のように防湿気密シー
ト3によって床下側からの湿気が防止されることによっ
て木質繊維板2および合板1が低湿度状態に維持される
という両面から、白アリによる食害を防止することがで
きる。
Further, the moisture-proof airtight sheet 3 and the hard layer of the wood fiber board 2 provided under the floor physically prevent the ants from being damaged by termites. By preventing moisture from the surface, the wood fiber board 2 and the plywood 1 can be maintained in a low humidity state, and can prevent the damage caused by termites.
【0019】図1では防湿気密シート3が木質繊維板2
の裏面全般を被覆するように設けられているが、木質繊
維板2の裏面から木口にまで回り込んで被覆するように
設けたり(図2)、さらに合板1の木口にまで回り込ん
で被覆するように設けたり(図3)、あるいは床下地板
の全表面を被覆するように設ける(図4)こともでき
る。なお、図2ないし図4に示される実施の態様におい
ては紙面手前側および奥側に位置している木口面も防湿
気密シート3で被覆されている。
In FIG. 1, the moisture-proof airtight sheet 3 is made of a wood fiber board 2.
Is provided so as to cover the entire back surface of the plywood 1, but is provided so as to wrap around from the back surface of the wood fiber board 2 to the kiguchi (FIG. 2), and further wrap around to the kiguchi of the plywood 1 to cover. (FIG. 3) or may be provided so as to cover the entire surface of the floor substrate (FIG. 4). In the embodiment shown in FIGS. 2 to 4, the front and back sides of the sheet are also covered with the moisture-proof airtight sheet 3.
【0020】防湿気密シート3で被覆される面積が大き
くなればなるほど、木質繊維板2および合板1の吸放湿
が抑制されて、寸法安定性の良好な床下地板を得ること
ができる。また、防湿気密シート3が木質繊維板2の木
口面を被覆し(図2)、あるいはさらに合板1の木口面
をも被覆する(図3、図4)ような構成とした場合に
は、これら木口面からの食害も防止する効果が得られ
る。
As the area covered by the moisture-proof airtight sheet 3 increases, the moisture absorption and desorption of the wood fiber board 2 and the plywood 1 are suppressed, and a floor substrate having good dimensional stability can be obtained. When the moisture-proof and airtight sheet 3 covers the opening of the wood fiber board 2 (FIG. 2) or further covers the opening of the plywood 1 (FIGS. 3 and 4), The effect of preventing erosion from the wood tip surface is obtained.
【0021】[0021]
【発明の効果】本発明によれば、防湿気密シートが床下
側からの湿気を遮断し、その上に位置する合板および木
質繊維板が高湿度になることを防止するため、これらの
吸湿による寸法変化が防止され、床に不陸や波打ち等が
発生することを防止することができる。
According to the present invention, the moisture-proof and airtight sheet blocks moisture from under the floor and prevents the plywood and the wood fiberboard located thereon from becoming high in humidity. The change can be prevented, and the floor can be prevented from being uneven or wavy.
【0022】同時に、合板および木質繊維板が低含水率
に維持されるため、腐朽菌の繁殖・増殖を抑制して床下
地板の腐朽を防止し、白アリの食害も防止することがで
きる。
At the same time, the plywood and the wood fiber board are maintained at a low moisture content, so that the growth and proliferation of the decay fungi can be suppressed, the decay of the floor baseboard can be prevented, and the termites can be prevented from being damaged.
【0023】本発明によれば、防湿気密シートを床下側
に設けると共にこの防湿気密シートに接して木質繊維板
の硬質層を設けるという構成を採用することによって上
記のような防腐効果および害虫忌避効果が得られるもの
であり、防腐剤や害虫忌避剤等の薬剤を用いる必要がな
い。このことは、これら薬剤の副作用として人体に悪影
響を及ぼすことなしに防腐および害虫忌避効果が得られ
ることを意味している。
According to the present invention, the above-mentioned antiseptic effect and insect repellent effect are obtained by adopting a configuration in which a moisture-proof airtight sheet is provided under the floor and a hard layer of a wood fiber board is provided in contact with the moisture-proof airtight sheet. And there is no need to use agents such as preservatives and insect repellents. This means that preservative and insect repellent effects can be obtained without adversely affecting the human body as a side effect of these drugs.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明の一実施態様による床下地板の構成を模
式的に示す断面図である。
FIG. 1 is a cross-sectional view schematically illustrating a configuration of a floor substrate according to an embodiment of the present invention.
【図2】本発明の他の実施態様による床下地板の構成を
模式的に示す断面図である。
FIG. 2 is a cross-sectional view schematically illustrating a configuration of a floor substrate according to another embodiment of the present invention.
【図3】本発明のさらに他の実施態様による床下地板の
構成を模式的に示す断面図である。
FIG. 3 is a cross-sectional view schematically showing a configuration of a floor substrate according to still another embodiment of the present invention.
【図4】本発明のさらに他の実施態様による床下地板の
構成を模式的に示す断面図である。
FIG. 4 is a cross-sectional view schematically showing a configuration of a floor substrate according to still another embodiment of the present invention.
【符号の説明】[Explanation of symbols]
1 合板 2 木質繊維板 3 防湿気密シート DESCRIPTION OF SYMBOLS 1 Plywood 2 Wood fiber board 3 Moisture-proof airtight sheet
フロントページの続き Fターム(参考) 2B250 AA05 BA05 BA06 BA08 CA11 DA04 EA02 EA13 FA21 FA31 GA03 2E001 DB01 DH12 DH14 FA12 GA22 GA24 GA42 HB04 HC02 HC12 HD11 HD13 2E162 CB08 CC03 CC08 CD11 CD12 CD13 Continued on front page F term (reference) 2B250 AA05 BA05 BA06 BA08 CA11 DA04 EA02 EA13 FA21 FA31 GA03 2E001 DB01 DH12 DH14 FA12 GA22 GA24 GA42 HB04 HC02 HC12 HD11 HD13 2E162 CB08 CC03 CC08 CD11 CD12 CD13

Claims (2)

    【特許請求の範囲】[Claims]
  1. 【請求項1】合板の裏面に、少なくとも片面に硬質層を
    有する木質繊維板を介して防湿気密シートを配すると共
    に、該木質繊維板の硬質層を防湿気密シートと接するよ
    うにして構成される床下地板。
    1. A moisture-proof airtight sheet is disposed on the back surface of a plywood via a wood fiber board having a hard layer on at least one side, and the hard layer of the wood fiber board is in contact with the moisture-proof airtight sheet. Floor slab.
  2. 【請求項2】合板の裏面に、少なくとも片面に硬質層を
    有する木質繊維板を介して防湿気密シートを配すると共
    に、該木質繊維板の硬質層を防湿気密シートと接するよ
    うにして構成される床下地板を、防湿気密シートが床下
    側となるように構造材に施工してなる床下地構造。
    2. A moisture-proof airtight sheet is disposed on the back surface of the plywood via a wood fiber board having a hard layer on at least one side, and the hard layer of the wood fiber board is in contact with the moisture-proof airtight sheet. An underfloor structure in which an underfloor board is constructed on a structural material such that the moisture-proof and airtight sheet is located below the floor.
JP2000016660A 2000-01-26 2000-01-26 Floor substrate board and floor substrate structure Pending JP2001207556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000016660A JP2001207556A (en) 2000-01-26 2000-01-26 Floor substrate board and floor substrate structure

Publications (1)

Publication Number Publication Date
JP2001207556A true JP2001207556A (en) 2001-08-03

Family

ID=18543765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000016660A Pending JP2001207556A (en) 2000-01-26 2000-01-26 Floor substrate board and floor substrate structure

Country Status (1)

Country Link
JP (1) JP2001207556A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014086046A1 (en) * 2012-12-03 2014-06-12 三林合板(南通)有限公司 Two-layer wood-structure floor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014086046A1 (en) * 2012-12-03 2014-06-12 三林合板(南通)有限公司 Two-layer wood-structure floor

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