JP2003080510A - Anti-static wood composite material, its manufacturing method and its use - Google Patents
Anti-static wood composite material, its manufacturing method and its useInfo
- Publication number
- JP2003080510A JP2003080510A JP2001275077A JP2001275077A JP2003080510A JP 2003080510 A JP2003080510 A JP 2003080510A JP 2001275077 A JP2001275077 A JP 2001275077A JP 2001275077 A JP2001275077 A JP 2001275077A JP 2003080510 A JP2003080510 A JP 2003080510A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- composite material
- board
- antistatic
- pulp
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、静電気の帯電によ
る電子回路の誤動作を防ぐための静電防止用木質複合材
料及びその製造方法並びにその用途に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antistatic wood composite material for preventing malfunction of an electronic circuit due to electrostatic charge, a method for producing the same, and its use.
【０００２】[0002]
【従来の技術】近年、パチンコやパチスロに代表される
電子制御遊技機には、遊技機の動作を電子的に制御する
電子回路基板が取り付けられている。そして、この種の
遊技機には、遊技機の盤面板上に貼り付けられたプラス
チックスシートとパチンコ玉との摩擦により発生した静
電気が帯電し易く、また帯電した静電気が何らかの原因
で放電したときには、前記電子回路が誤動作を引き起こ
すという問題がある。このため、遊技機には一般に帯電
防止機能を保ちながら静電気を逃がすような静電防止策
が講じられている。このような防止策として例えば特開
平６−２４４号公報には、電子制御方式パチンコ遊技機
の盤面の裏面側又は層間に良導電性の金属箔を設けて帯
電防止を図る方法が提案されている。2. Description of the Related Art In recent years, electronic control game machines represented by pachinko and pachislot machines are equipped with electronic circuit boards for electronically controlling the operation of the game machines. And, in this type of gaming machine, the static electricity generated by the friction between the plastic sheet and the pachinko balls attached on the board of the gaming machine is easily charged, and when the charged static electricity is discharged for some reason However, there is a problem that the electronic circuit causes a malfunction. For this reason, game machines are generally provided with antistatic measures that allow static electricity to escape while maintaining an antistatic function. As such a preventive measure, for example, Japanese Patent Laid-Open No. 6-244 proposes a method of providing a metal foil having good conductivity on the back surface side or between layers of an electronically controlled pachinko gaming machine or between layers to prevent electrification. .
【０００３】しかしながら、特開平６−２４４号公報に
よる方法は、確かに帯電防止機能という点では優れてい
るが、良導電体として使用する素材が金属箔であるた
め、遊技機の木質の盤面板若しくは筐体との接着性、又
はルーターによる穴あけ、鋸による切断などの木工加工
性に劣るという問題がある。また、使用済み遊技機は、
一般に資源有効利用促進法に基づき分別後に焼却処理さ
れているが、その分別作業には多大の労力を要するた
め、帯電ないし静電防止策といえども分別を必要としな
いタイプものが求められている。However, the method according to Japanese Patent Laid-Open No. 6-244 is certainly excellent in the antistatic function, but since the material used as a good conductor is a metal foil, the wooden board of the game machine is used. Alternatively, there is a problem in that it is inferior in adhesiveness to a housing or in woodworking workability such as drilling with a router and cutting with a saw. Also, the used gaming machine is
Generally, it is incinerated after separation according to the Law for Promotion of Effective Utilization of Resources, but since the separation work requires a great deal of labor, there is a demand for a type that does not require separation even for antistatic or electrostatic measures. .
【０００４】[0004]
【発明が解決しようとする課題】そこで、本発明の目的
は、静電気の帯電による電子回路の誤動作を防止する静
電防止機能を有し、また遊技機の木質の盤面板若しくは
筐体との接着性に優れた木質複合材料を提供することに
ある。また、本発明の他の目的は、合板等に代表される
木質板と遜色のないルーターによる穴あけ、鋸による切
断などの木工加工性を有する静電防止機能を有する複合
化木質板を提供することにある。また、本発明の他の目
的は、廃棄処分の際にも分別の必要がない静電防止機能
を有する複合化木質板を提供することにある。また、本
発明の他の目的は、前記木質複合材料若しくはそれを硬
化させて得られる硬化体又は複合化木質板を用いた電子
制御遊技機を提供することにある。さらに、本発明の他
の目的は、静電防止機能を有する木質複合材料の製造方
法を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to have an antistatic function for preventing a malfunction of an electronic circuit due to electrostatic charging, and to bond it to a wooden board or a casing of a gaming machine. It is to provide a wood composite material having excellent properties. Another object of the present invention is to provide a composite wood board having an antistatic function, which has woodworkability such as drilling with a router and cutting with a saw, which is comparable to wood boards represented by plywood and the like. It is in. Another object of the present invention is to provide a composite wood board having an antistatic function that does not require separation even when it is disposed of. Another object of the present invention is to provide an electronically controlled gaming machine using the wood composite material, a cured product obtained by curing the wood composite material, or a composite wood board. Still another object of the present invention is to provide a method for producing a wood composite material having an antistatic function.
【０００５】[0005]
【課題を解決するための手段】本発明者は、前記課題を
解決すべく鋭意検討を行なった結果、特定の導電性フィ
ラーとパルプ質基材とを特定割合で用いてなる木質複合
材料により、上述の課題を解決できることを見出し、本
発明を完成するに至った。すなわち、本発明は、粉末状
のカーボンないしグラファイト、導電性ウイスカー及び
繊維径が０．１〜２０μｍで、かつアスペクト比が５０
〜７００であるカーボン繊維ないしグラファイト繊維の
群から選ばれる少なくとも１種の導電性フィラーとパル
プ質基材と熱硬化性樹脂とを必須成分として含み、かつ
前記導電性フィラーとパルプ質基材との配合割合（質量
比）が４／９６〜５０／５０であることを特徴とする静
電防止用木質複合材料である。Means for Solving the Problems The present inventor has conducted diligent studies to solve the above problems, and as a result, a wood composite material containing a specific conductive filler and a pulpy base material in a specific ratio, The inventors have found that the above problems can be solved, and have completed the present invention. That is, according to the present invention, powdery carbon or graphite, conductive whiskers and a fiber diameter of 0.1 to 20 μm and an aspect ratio of 50.
Of at least one kind of conductive filler selected from the group of carbon fibers or graphite fibers of ˜700, pulp material and thermosetting resin as essential components, and containing the conductive filler and pulp material. The wood composite material for antistatic is characterized in that the blending ratio (mass ratio) is 4/96 to 50/50.
【０００６】また、他の本発明は、木質板の表面上及び
／又は木質板間に、請求項１に記載の静電防止用木質複
合材料若しくはそれを加熱硬化させて得られる硬化体を
層状に設けてなることを特徴とする静電防止用複合化木
質板である。In another aspect of the present invention, the antistatic wood composite material according to claim 1 or a cured product obtained by heat-curing the same is layered on the surface of the wood board and / or between the wood boards. It is a composite wood board for preventing static electricity, which is characterized in that it is provided in the.
【０００７】また、他の本発明は、電子制御遊技機の盤
面板及び／又は筐体の少なくとも一部の構成材料として
用いる、前記静電防止用木質複合材料及び該複合材料を
硬化させて得られた硬化体である。Another aspect of the present invention is obtained by curing the antistatic wood composite material and the composite material, which is used as a constituent material of at least a part of a board and / or a casing of an electronically controlled game machine. It is a cured product.
【０００８】また、他の本発明は、電子制御遊技機の盤
面板及び／又は筐体として、又は少なくとも一部の構成
材料として用いる、前記静電防止用複合化木質板であ
る。Another aspect of the present invention is the antistatic composite wood board used as a board and / or housing of an electronically controlled game machine, or as at least a part of constituent materials.
【０００９】さらに、他の本発明は、（１）導電性フィ
ラーとパルプ質基材と熱硬化性樹脂を必須成分として含
み、（２）導電性フィラーとパルプ質基材との配合割合
（質量比）が４／９６〜５０／５０であり、（３）導電
性フィラーが、粉末状のカーボンないしグラファイト、
導電性ウイスカー及び繊維径が０．１〜２０μｍでかつ
アスペクト比が５０〜７００であるカーボン繊維ないし
グラファイト繊維の群から選ばれる少なくとも１種であ
る、水性スラリーを抄造することを特徴とする静電防止
用木質複合材料の製造方法である。Still another aspect of the present invention is that (1) a conductive filler, a pulp base material and a thermosetting resin are contained as essential components, and (2) a blending ratio (mass) of the conductive filler and the pulp base material. Ratio) is 4/96 to 50/50, and (3) the conductive filler is powdery carbon or graphite,
Electrostatic whiskers and at least one selected from the group consisting of carbon fibers or graphite fibers having a fiber diameter of 0.1 to 20 μm and an aspect ratio of 50 to 700, and electrostatically producing an aqueous slurry. It is a method for producing a preventive wood composite material.
【００１０】[0010]
【発明の実施の形態】本発明に係る静電防止用木質複合
材料の原料として用いられる導電性フィラーは、木質複
合材料への静電防止機能の付与を果たすものであって、
木工加工性を阻害しなければ特に限定はないが、好まし
い例としては、例えばカーボンブラック、膨張グラファ
イト等に代表される粉末状のカーボンないしグラファイ
ト、導電性チタン酸カリウムウイスカー、導電性チタン
酸バリウムウイスカー等に代表される導電性ウイスカー
及び繊維径が０．１〜２０μｍかつアスペクト比（繊維
長Ｌ／繊維径Ｄ）が５０〜７００のカーボン繊維ないし
グラファイト繊維などを挙げることができる。中でも、
導電性ウイスカー又はカーボン繊維がコスト面で有利で
ある。これらは１種で用いてもよく、２種以上を組み合
わせて用いてもよい。BEST MODE FOR CARRYING OUT THE INVENTION A conductive filler used as a raw material for an antistatic wood composite material according to the present invention serves to impart an antistatic function to a wood composite material,
It is not particularly limited as long as it does not inhibit the woodworking workability, but preferable examples include carbon black, powdery carbon or graphite typified by expanded graphite, conductive potassium titanate whiskers, conductive barium titanate whiskers. Examples thereof include conductive whiskers and carbon fibers or graphite fibers having a fiber diameter of 0.1 to 20 μm and an aspect ratio (fiber length L / fiber diameter D) of 50 to 700. Above all,
Conductive whiskers or carbon fibers are advantageous in terms of cost. These may be used alone or in combination of two or more.
【００１１】特に、前記カーボン繊維ないしグラファイ
ト繊維は、後述する湿式抄紙法での水中分散性やパルプ
質基材との相互作用（例えば絡み合い）、特に静電防止
機能レベル（表面抵抗）などの観点から、一般的に市販
されている繊維径（直径）が０．１〜２０μｍのカーボ
ン繊維ないしグラファイト繊維のなかでも、そのアスペ
クト比（繊維長Ｌ／繊維径Ｄ）が５０〜７００の範囲、
好ましくは５０〜５００、より好ましくは５０〜４００
のものを用いる必要がある。このようなカーボン繊維と
しては、例えば大阪ガスケミカル株式会社製ドナカーボ
（品番：Ｓ−２４４，Ｓ−２３１，Ｓ−２３３，Ｓ−３
３１）、またグラファイト繊維としては、例えば呉羽化
学工業株式会社製クレカチョップ（品番：Ｃ−２０３
Ｓ）などを挙げることができる。In particular, the carbon fiber or graphite fiber has a viewpoint of the dispersibility in water in the wet papermaking method described later and the interaction (for example, entanglement) with the pulp-based material, especially the antistatic function level (surface resistance). From among the commercially available carbon fibers or graphite fibers having a fiber diameter (diameter) of 0.1 to 20 μm, the aspect ratio (fiber length L / fiber diameter D) is in the range of 50 to 700,
Preferably 50-500, more preferably 50-400
It is necessary to use the one. As such a carbon fiber, for example, Dona Carbo (product number: S-244, S-231, S-233, S-3 manufactured by Osaka Gas Chemicals Co., Ltd.
31) and graphite fibers include, for example, Kureha Chemical Industry Co., Ltd. Kureka Chop (product number: C-203).
S) etc. can be mentioned.
【００１２】一方、パルプ質基材は、主に木質複合材料
に木工加工性及び強度を付与するために用いられるもの
であり、例えば砕木パルプ、レファイナー砕木パルプ、
サーモメカニカルパルプ、クラフトパルプ、亜硫酸パル
プなどの木材パルプ、リンターパルプ、麻パルプ、わら
パルプなどの非木材パルプ、古紙パルプ及びこれら混合
物などが挙げられるがこれらに限定されるものではな
く、木工加工性を阻害しない範囲内であれば合成パルプ
を用いることができる。On the other hand, the pulp base material is mainly used for imparting woodworking workability and strength to the wood composite material, and for example, ground wood pulp, refiner ground wood pulp,
Wood pulp such as thermo-mechanical pulp, kraft pulp, and sulfite pulp, non-wood pulp such as linter pulp, hemp pulp, straw pulp, waste paper pulp, and mixtures thereof, but are not limited to these, woodworking processability A synthetic pulp can be used as long as it does not hinder the above.
【００１３】このような導電性フィラーとパルプ質基材
との配合割合（質量比）は、静電防止効果の観点から、
４／９６以上を必要とするが、５０／５０を超えても帯
電防止機能レベル（表面抵抗Ω）にあまり変化が見られ
ない。さらに、帯電防止機能レベル及びコストを考慮す
れば好ましくは５／９５〜３０／７０の範囲、より好ま
しくは５／９５〜１０／９０である。From the viewpoint of the antistatic effect, the mixing ratio (mass ratio) of the conductive filler and the pulp-based material is
4/96 or more is required, but even if it exceeds 50/50, the antistatic function level (surface resistance Ω) does not change much. Further, considering the antistatic function level and cost, the range is preferably 5/95 to 30/70, and more preferably 5/95 to 10/90.
【００１４】また、熱硬化性樹脂は、導電性フィラー及
び／又はパルプ質基材を化学的に結着して複合材料の強
度発現をはかるための樹脂系結合剤であって、このよう
な熱硬化性樹脂の例としては、例えばフェノール樹脂、
エポキシ樹脂、不飽和ポリエステル樹脂、メラミン樹
脂、尿素樹脂、ジアリルフタレート樹脂などが挙げられ
る。中でも、製造法（湿式抄紙法、乾式法）に対応する
硬化速度の選択が容易であるフェノール樹脂が好まし
い。これらは１種で用いてもよく、２種以上を組み合わ
せて用いてもよい。熱硬化性樹脂の配合量としては、導
電性フィラーとパルプ質基材との総量１００質量部基準
に対し、通常１０〜７０質量部の範囲、好ましくは３０
〜５０質量部である。配合量が１０質量部未満では強度
発現が十分でなく、逆に７０質量部を超えると木工加工
性に不具合を招きやすい。Further, the thermosetting resin is a resin-based binder for chemically binding the conductive filler and / or the pulp-like base material to develop the strength of the composite material. Examples of the curable resin include phenol resin,
Examples thereof include epoxy resin, unsaturated polyester resin, melamine resin, urea resin, diallyl phthalate resin and the like. Above all, a phenol resin is preferable because it is easy to select a curing rate corresponding to the production method (wet papermaking method, dry method). These may be used alone or in combination of two or more. The blending amount of the thermosetting resin is usually in the range of 10 to 70 parts by mass, preferably 30 parts, based on 100 parts by mass of the total amount of the conductive filler and the pulp-based base material.
˜50 parts by mass. If the blending amount is less than 10 parts by mass, the strength development is not sufficient, and conversely if the blending amount exceeds 70 parts by mass, the woodworking workability is apt to occur.
【００１５】本発明に係る静電防止用木質複合材料は、
例えば多量の水媒体中に導電性フィラーとパルプ質基材
と熱硬化性樹脂を攪拌混合により分散させた後、場合に
よっては適当な高分子凝集剤をさらに添加混合して水性
スラリーを作製し、これを適当な抄紙機によりシート状
に抄造し、場合によっては乾燥を施して製造する湿式抄
紙法、又は導電性フィラーとパルプ質基材との混合物に
熱硬化性樹脂を散布してからフリース製造機によりマッ
ト状フリースを賦形した後、加熱処理して製造する乾式
法などにより製造することができる。中でも、前者の湿
式抄紙法によれば導電性フィラーが均一に分散されるた
め、導電性フィラーの使用量を少なくしても優れた静電
防止機能を有する薄い木質複合材料を提供することがで
きるという点で後者より有利である。The antistatic wood composite material according to the present invention is
For example, after dispersing the conductive filler, the pulp base material and the thermosetting resin in a large amount of an aqueous medium by stirring and mixing, in some cases, a suitable polymer flocculant is further added and mixed to prepare an aqueous slurry, This is made into a sheet by an appropriate paper machine, and a wet papermaking method in which it is dried in some cases, or a fleece is produced by spraying a thermosetting resin on a mixture of a conductive filler and a pulp-based substrate. The mat-shaped fleece can be shaped by a machine and then heat-treated to produce a dry method. Among them, according to the former wet papermaking method, since the conductive filler is uniformly dispersed, it is possible to provide a thin wood composite material having an excellent antistatic function even if the amount of the conductive filler used is reduced. In that respect, it is more advantageous than the latter.
【００１６】こうして得られた木質複合材料は、単一で
又は複数積層し、好ましくはこれは加熱加圧して熱硬化
性樹脂を硬化させることにより、導電性フィラー及び／
又はパルプ質基材が相互に結着した密度０．４〜１．０
ｇ／cm3 、好ましくは０．６〜０．８ｇ／cm3 のシート
状ないし薄板状の硬化体とされる。密度が０．４ｇ／cm
3 未満では強度の発現が十分でなく、逆に１．０ｇ／cm
3 を超えると木工加工性に不具合が生じやすくなる。得
られた硬化体は、帯電防止機能を保ちながら静電気を逃
がすような静電防止機能を発現するための表面抵抗（１
０2 〜１０8 Ω）、好ましくは１０2 〜１０4 Ωを有す
るため、電子制御遊技機の盤面板及び／又は筐体の少な
くとも一部の構成材料として適当な接合手段により接合
させることにより、電子制御遊技機に静電防止機能を付
与することができる。勿論、乾燥状態の木質複合材料で
も硬化体と同様な静電防止機能を発現することができ
る。The wood composite material thus obtained is used alone or in a plurality of layers, and preferably, this is heated and pressed to cure the thermosetting resin, whereby the conductive filler and / or
Or, the density of the pulp-based materials bound to each other 0.4 to 1.0
g / cm 3, and preferably a sheet-like or thin plate-like cured product of 0.6~0.8g / cm 3. Density 0.4g / cm
If it is less than 3 , strength is not sufficiently expressed, and conversely 1.0 g / cm
If it exceeds 3 , the woodworking processability tends to be defective. The obtained cured product has a surface resistance (1) for exhibiting an antistatic function that releases static electricity while maintaining the antistatic function.
0 2 to 10 8 Ω), preferably 10 2 to 10 4 Ω, so that by bonding with a bonding means suitable as a constituent material of at least a part of the board and / or the casing of the electronically controlled gaming machine, An antistatic function can be added to the electronically controlled game machine. Of course, the dry wood-based composite material can also exhibit the same antistatic function as the cured product.
【００１７】また、木質複合材料は、例えば合板、パー
ティクルボード、中質繊維板、集成木材、チップボード
等の木質板の表面及び／又は板間に積層した後、加熱加
圧して一体化させることにより、静電防止機能を有する
複合化木質板を提供することができる。また、木質複合
材料の硬化体は、木質板の表面及び／又は板間に積層し
た後、適当な接合手段で一体化して静電防止機能を有す
る複合化木質板としてもよい。接合手段としては、各種
接着剤、例えば酢酸ビニル系、尿素系、フェノール系、
ウレタン系接着剤等による貼付方法が一般的であるが、
必要に応じて釘打ち、縫合等により接合してもよい。か
かる複合化木質板は、電子回路基板を装着したパチンコ
・パチスロ遊技機の盤面板及び／又は筐体として、又は
少なくとも一部の構成材料として用いることにより、静
電防止機能を有する電子制御遊技機を提供することがで
きる。Further, the wood composite material is laminated by, for example, heating and pressurizing after laminating on the surface and / or between the wood boards such as plywood, particle board, medium fiber board, laminated wood, chip board and the like. This makes it possible to provide a composite wood board having an antistatic function. Further, the hardened body of the wood composite material may be laminated on the surface of the wood board and / or between the boards and then integrated by an appropriate joining means to form a composite wood board having an antistatic function. As a joining means, various adhesives such as vinyl acetate-based, urea-based, phenol-based,
The method of sticking with urethane adhesive is generally used,
If necessary, they may be joined by nailing, suturing or the like. Such a composite wood board is used as a board and / or housing of a pachinko / pachislot gaming machine equipped with an electronic circuit board, or by being used as at least a part of a constituent material, an electronically controlled gaming machine having an antistatic function. Can be provided.
【００１８】[0018]
【実施例】次に、本発明を実施例によりさらに詳細に説
明するが、本発明は、これらの例によってなんら限定さ
れるものではない。なお、木質複合材料の硬化体につい
ては、（１）静電防止機能レベル（ＪＩＳ Ｋ−６９１
１による表面抵抗）を調査し、複合化木質板について
は、（２）接着性（ＪＩＳ Ａ−５９０５よる剥離強さ
と目視による剥離状態）、（３）木工加工性（ルーター
による穴あけ、鋸による切断）を調査した。なお、木工
加工性については比較対象の合板を基準に相対評価し、
遜色のない場合は「○」、劣るため実用に供しない場合
は「×」で表示した。EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. Regarding the cured product of the wood composite material, (1) Antistatic function level (JIS K-691)
The surface resistance according to 1) was investigated, and regarding the composite wood board, (2) adhesiveness (peeling strength according to JIS A-5905 and visually peeling state), (3) woodworking workability (drilling with a router, cutting with a saw) )investigated. In addition, about woodworking workability, relative evaluation based on plywood for comparison,
When it is comparable, it is indicated by "○", and when it is inferior, it is indicated by "x".
【００１９】実施例１
３リットルジューサーミキサー内に水２リットル、
（Ａ）導電性フィラーとしてドナカーボＳ−２３１（品
番、カール状のカーボン繊維、繊維径：１３μｍ、Ｌ／
Ｄ＝２３０、大坂ガスケミカル株式会社製）を１．４
ｇ、（Ｂ）パルプ質基材として針葉樹クラフトパルプ１
２．６ｇ（Ａ／Ｂ＝１０／９０）及び（Ｃ）熱硬化性樹
脂として粉末状のベンジリックエーテル型フェノール樹
脂６ｇ（ＡとＢの合計１００質量部に対して４２．９質
量部）を順次投入したのち１分間攪拌混合して水性スラ
リーを得た。次に、該水性スラリーを攪拌翼付混合容器
内に移し、高分子凝集剤を添加したのち１分間攪拌混合
して抄紙用水性スラリーを得た。Example 1 2 liters of water in a 3 liter juicer mixer,
(A) Donacarb S-231 (part number, curled carbon fiber, fiber diameter: 13 μm, L /
D = 230, manufactured by Osaka Gas Chemicals Co., Ltd.) 1.4
g, (B) Softwood kraft pulp 1 as pulp base material
2.6 g (A / B = 10/90) and (C) 6 g of powdered benzylic ether type phenol resin as a thermosetting resin (42.9 parts by mass with respect to 100 parts by mass of A and B in total). After being sequentially charged, the mixture was stirred and mixed for 1 minute to obtain an aqueous slurry. Next, the aqueous slurry was transferred into a mixing vessel equipped with a stirring blade, and after adding a polymer flocculant, the mixture was stirred and mixed for 1 minute to obtain an aqueous slurry for papermaking.
【００２０】次に、標準角型シートマシン（株式会社東
洋精密製作所製）内に上記の抄紙用水性スラリーを全量
投入し、ろ過、吸引圧搾脱水してシートを作製し、これ
を８０℃に温調した乾燥器内で乾燥して坪量約３５０ｇ
／ｍ2 の木質複合材料Ｉを得た。Next, all of the above aqueous slurry for papermaking is put into a standard square sheet machine (manufactured by Toyo Seimitsu Seisakusho Co., Ltd.), filtered, suction pressed and dehydrated to prepare a sheet, which is heated to 80 ° C. Dry in a controlled dryer and weigh about 350g
/ M 2 of wood composite material I was obtained.
【００２１】次に、得られた木質複合材料Ｉを加熱加圧
（圧力０．７８MPa 、温度１８０℃、時間３分間）して
密度０．７ｇ／cm3 、厚み０．５mmの木質複合材料の硬
化体Ｉを得た。さらに、厚み１８mmの合板の表面上に硬
化体Ｉを市販の酢酸ビニル系木工用接着剤で貼り付けて
複合化木質板ａを得た。得られた硬化体Ｉについては、
静電防止機能レベルを調べ、複合化木質板ａについて
は、接着性と木工加工性を調査した。これらの結果を表
１、表２、表３に示す。Next, the obtained wood composite material I was heated and pressed (pressure 0.78 MPa, temperature 180 ° C., time 3 minutes) to obtain a wood composite material having a density of 0.7 g / cm 3 and a thickness of 0.5 mm. A cured product I was obtained. Further, the cured product I was attached to the surface of a plywood having a thickness of 18 mm with a commercially available vinyl acetate adhesive for woodworking to obtain a composite wood board a. Regarding the obtained cured product I,
The antistatic function level was examined, and the composite wood board a was examined for adhesiveness and woodworking workability. The results are shown in Tables 1, 2 and 3.
【００２２】実施例２〜３及び比較例１
実施例１において、導電性フィラーとパルプ質基材との
配合割合を５／９５、５０／５０（以上実施例２〜３）
及び２／９８（比較例１）とした以外は、実施例１と同
様にして密度０．７ｇ／cm3(厚み０．５mm）の木質複合
材料の硬化体II〜III(実施例２〜３）及びIV（比較例
１）と、複合化木質板ｂ〜ｃ（実施例２〜３）及びｄ
（比較例１）を得た。得られた硬化体（II〜IV）につい
ては、表面抵抗を測定し、また複合化木質板（ｂ〜ｄ）
については、接着性と木工加工性を調査した。これらの
結果を表１に示す。Examples 2 to 3 and Comparative Example 1 In Example 1, the compounding ratio of the conductive filler and the pulp-based material was 5/95, 50/50 (the above Examples 2 to 3).
And 2/98 (Comparative Example 1), the cured product II-III (Examples 2-3) of the wood composite material having the density of 0.7 g / cm 3 (thickness 0.5 mm) was prepared in the same manner as in Example 1. ) And IV (Comparative Example 1), and composite wood boards bc (Examples 2 to 3) and d.
(Comparative example 1) was obtained. The surface resistance of the obtained cured products (II to IV) was measured, and composite wood boards (b to d) were used.
For, the adhesiveness and woodworking workability were investigated. The results are shown in Table 1.
【００２３】[0023]
【表１】 [Table 1]
【００２４】実施例４〜５及び比較例２
実施例１において、導電性フィラーであるドナカーボＳ
−２３１を、ケッチェンブラックＥＣ６００ＪＤ（商品
名：カーボンブラック、ケッチェン・ブラックインター
ナショナル株式会社製）、ＤＥＮＴＡＬＬ ＢＫ−４０
０（商品名：チタン酸カリウムウイスカー、大塚化学株
式会社製）に変更する以外は、実施例１と同様にして密
度０．７ｇ／cm3(厚み０．５mm）の木質複合材料の硬化
体Ｖ〜VIと複合化木質板ｅ〜ｆを得た。また、比較対象
（従来技術）のため、厚み１８mmの合板の表面上に厚み
０．１mmのアルミ製金属箔を酢酸ビニル系木工用接着剤
にて貼り付けて複合化木質板ｇ（比較例２）を得た。得
られた硬化体Ｖ〜VI及び複合化木質板ｇについては、表
面抵抗を測定し、また複合化木質板ｅ〜ｇについては、
接着性と木工加工性を調査した。これらの結果を表２に
示す。Examples 4 to 5 and Comparative Example 2 In Example 1, the conductive filler Donacarb S was used.
-231, Ketjen Black EC600JD (trade name: carbon black, Ketjen Black International Co., Ltd.), DENTALL BK-40
0 (trade name: potassium titanate whiskers, manufactured by Otsuka Chemical Co., Ltd.), except that the density is 0.7 g / cm 3 (thickness 0.5 mm), a hardened body V of wood composite material ~ VI and composite wood boards ef were obtained. For comparison (prior art), a 0.1 mm thick aluminum metal foil was attached to the surface of a 18 mm thick plywood with a vinyl acetate-based woodworking adhesive (Comparative Example 2). ) Got. For the obtained cured products V to VI and the composite wood board g, the surface resistance was measured, and for the composite wood boards e to g,
The adhesion and woodworking workability were investigated. The results are shown in Table 2.
【００２５】[0025]
【表２】 [Table 2]
【００２６】実施例６及び比較例３
実施例１において、導電性フィラーとして用いたドナカ
ーボＳ−２３１を、実施例６としてドナカーボＳ−２４
４（品番、カーボン繊維、繊維径：１３μｍ、Ｌ／Ｄ＝
５４）、及び比較例３としてドナカーボＳ−２４２（品
番、カーボン繊維、繊維径：１３μｍ、Ｌ／Ｄ＝２８）
を用いる以外は実施例１と同様にして木質複合材料の硬
化体VII(実施例６）とVIII（比較例３）と、これを用い
た複合化木質板ｈ（実施例６）とｉ（比較例３）を得
た。得られた硬化体 VII〜VIIIについては、表面抵抗を
測定し、また複合化木質板ｈ〜ｉについては、接着性と
木工加工性を調査した。これらの結果を表３に示す。Example 6 and Comparative Example 3 Donacarb S-231 used as the conductive filler in Example 1 and Donacarb S-24 as Example 6 were used.
4 (Product number, carbon fiber, fiber diameter: 13 μm, L / D =
54), and as Comparative Example 3 Donacarb S-242 (product number, carbon fiber, fiber diameter: 13 μm, L / D = 28)
In the same manner as in Example 1 except that the above is used, the hardened bodies VII (Example 6) and VIII (Comparative Example 3) of the wood composite material, and the composite wood board h (Example 6) and i (Comparison) using this Example 3) was obtained. The surface resistance of the obtained cured products VII to VIII was measured, and the adhesiveness and the woodworking processability of the composite wood boards h to i were investigated. The results are shown in Table 3.
【００２７】[0027]
【表３】 [Table 3]
【００２８】実施例７
電子制御遊技機の盤面板として、実施例１で作製した複
合化木質板ａの硬化体層側表面上に酢酸ビニル系木工用
接着剤にてプラスッチック製の化粧セルを貼り付けて盤
面板（１）を作製した。得られた盤面板（１）の端部で
硬化体層部にアース線を設け、また盤面板（１）上の任
意の位置に、５０mm離して２本の真鍮釘を貫通するまで
垂直に打込んだのち、デジタルマルチメーターＳＫ−６
５１１（商品名：絶縁抵抗計、カセイ株式会社製）によ
り真鍮釘間と該真鍮釘とアース線間の電気抵抗をそれぞ
れ測定した。その結果、真鍮釘間及び真鍮釘とアース線
間の電気抵抗はそれぞれ１０3 〜１０4 Ωであった。こ
のことにより、複合化木質板ａの硬化体は、帯電を回避
できる十分な導電性、すなわち静電防止効果を有するこ
とが確認された。なお、真鍮釘と硬化体層部に設けたア
ース線の取り付け位置との距離は５００mmであった。Example 7 As a board face plate of an electronically controlled game machine, a plastic cell made of plastic is pasted with a vinyl acetate woodworking adhesive on the surface of the hardened body layer side of the composite wood board a prepared in Example 1. Then, a board plate (1) was prepared. A ground wire is provided on the hardened body layer portion at the end of the obtained board face plate (1), and it is vertically driven at an arbitrary position on the board face plate (1) at a distance of 50 mm until it penetrates two brass nails. After incorporating, Digital Multimeter SK-6
The electrical resistances between the brass nails and between the brass nails and the ground wire were measured with 511 (trade name: insulation resistance meter, manufactured by Kasei Corporation). As a result, the electrical resistances between the brass nails and between the brass nails and the ground wire were 10 3 to 10 4 Ω, respectively. From this, it was confirmed that the cured product of the composite wood board a had sufficient conductivity, that is, an antistatic effect, to avoid charging. The distance between the brass nail and the mounting position of the ground wire provided on the hardened layer was 500 mm.
【００２９】比較例４
実施例７において、複合化木質板ａに代えて比較例３で
作製した複合化木質板ｉを使用した以外は、実施例７と
同様にして盤面板（２）を作製するとともに、実施例７
と同様にして真鍮釘間と該真鍮釘とアース線間の電気抵
抗をそれぞれ測定した。その結果、真鍮釘間及び真鍮釘
とアース線間の電気抵抗は、それぞれ測定限界以上であ
った。このことにより、複合化木質板ｉの硬化体には、
帯電を回避できるに必要な導電性、すなわち静電防止効
果は認められなかった。Comparative Example 4 A board face plate (2) was prepared in the same manner as in Example 7 except that the composite wood board i prepared in Comparative Example 3 was used instead of the composite wood board a. Example 7
The electrical resistances between the brass nails and between the brass nails and the ground wire were measured in the same manner as in. As a result, the electrical resistances between the brass nails and between the brass nails and the ground wire were above the measurement limits. As a result, the hardened body of the composite wood board i
The conductivity necessary to avoid charging, that is, the antistatic effect was not recognized.
【００３０】[0030]
【発明の効果】以上説明した通り、本発明によれば、導
電性フィラーとパルプ質基材を組み合わせて用いること
により、静電気の帯電による電子回路の誤動作を抑止す
るのに十分な静電防止機能（表面抵抗１０2 〜１０8
Ω）を有する木質複合材料を提供することができる。ま
た、木質複合材料又はその硬化体と木質板とを一体化さ
せてなる複合化木質板は、合板と遜色のない木工加工性
を有し、木質複合材料及びその硬化体と木質板の間の接
着性にも優れていることが確認された。このような静電
防止機能を有する複合化木質板を、例えばパチンコ・パ
チスロの遊技盤面板及び／又は筐体の素材として用いる
電子制御遊技機は、静電気帯電による誤動作を回避する
ことができる。しかも廃棄の際にも例えば金属箔を使用
した場合のような分別の必要がない点で有利である。さ
らに、本発明の製造方法によれば導電性フィラーが均一
に分散されるため、静電防止機能に優れた薄い木質複合
材料を提供することができる。As described above, according to the present invention, by using the conductive filler and the pulp-based material in combination, the antistatic function sufficient to prevent the malfunction of the electronic circuit due to the electrostatic charging. (Surface resistance 10 2 to 10 8
Ω) can be provided. Further, the composite wood board obtained by integrating the wood composite material or its hardened body and the wood board has a woodworking workability comparable to that of plywood, and the adhesion between the wood composite material and its hardened body and the wood board. It was confirmed that it was also excellent. An electronically controlled gaming machine using such a composite wood board having an antistatic function as a material for a pachinko / pachislot game board face plate and / or a case can avoid malfunction due to electrostatic charging. In addition, it is advantageous in that it is not necessary to separate it when disposing, such as when using a metal foil. Furthermore, according to the manufacturing method of the present invention, since the conductive filler is uniformly dispersed, it is possible to provide a thin wood composite material having an excellent antistatic function.
Claims (6)
導電性ウイスカー及び繊維径が０．１〜２０μｍで、か
つアスペクト比が５０〜７００であるカーボン繊維ない
しグラファイト繊維の群から選ばれる少なくとも１種の
導電性フィラーとパルプ質基材と熱硬化性樹脂とを必須
成分として含み、かつ前記導電性フィラーとパルプ質基
材との配合割合（質量比）が４／９６〜５０／５０であ
ることを特徴とする静電防止用木質複合材料。1. Powder carbon or graphite,
Conductive whiskers and at least one conductive filler selected from the group of carbon fibers or graphite fibers having a fiber diameter of 0.1 to 20 μm and an aspect ratio of 50 to 700, a pulp base material, and a thermosetting resin. An antistatic wood-based composite material, characterized by containing, as an essential component, and a blending ratio (mass ratio) of the conductive filler to the pulp-based base material of 4/96 to 50/50.
請求項１に記載の静電防止用木質複合材料若しくはそれ
を加熱硬化させて得られる硬化体を層状に設けてなるこ
とを特徴とする静電防止用複合化木質板。2. On the surface of the wood board and / or between the wood boards,
An antistatic composite wood board, comprising the antistatic wood composite material according to claim 1 or a cured product obtained by heating and curing the same in a layered manner.
の少なくとも一部の構成材料として用いる、請求項１に
記載の静電防止用木質複合材料。3. The antistatic wood composite material according to claim 1, which is used as a constituent material of at least a part of a board and / or a case of an electronically controlled game machine.
の少なくとも一部の構成材料として用いる、請求項１に
記載の静電防止用木質複合材料を硬化させて得られた硬
化体。4. A cured product obtained by curing the antistatic wood composite material according to claim 1, which is used as a constituent material of at least a part of a board and / or a casing of an electronically controlled game machine.
として、又は少なくとも一部の構成材料として用いる、
請求項２に記載の静電防止用複合化木質板。5. Used as a board and / or housing of an electronically controlled gaming machine, or as at least a part of constituent materials,
The anti-static composite wood board according to claim 2.
熱硬化性樹脂を必須成分として含み、（２）導電性フィ
ラーとパルプ質基材との配合割合（質量比）が４／９６
〜５０／５０であり、（３）導電性フィラーが、粉末状
のカーボンないしグラファイト、導電性ウイスカー及び
繊維径が０．１〜２０μｍでかつアスペクト比が５０〜
７００であるカーボン繊維ないしグラファイト繊維の群
から選ばれる少なくとも１種である、水性スラリーを抄
造することを特徴とする静電防止用木質複合材料の製造
方法。6. (1) A conductive filler, a pulpy base material and a thermosetting resin are contained as essential components, and (2) a blending ratio (mass ratio) of the conductive filler and the pulpy base material is 4/96.
50 to 50/50, (3) the conductive filler is powdered carbon or graphite, conductive whiskers, and the fiber diameter is 0.1 to 20 μm and the aspect ratio is 50 to 50.
A method for producing an antistatic wood composite material, characterized in that an aqueous slurry, which is at least one kind selected from the group of carbon fiber or graphite fiber of 700, is produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001275077A JP2003080510A (en) | 2001-09-11 | 2001-09-11 | Anti-static wood composite material, its manufacturing method and its use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001275077A JP2003080510A (en) | 2001-09-11 | 2001-09-11 | Anti-static wood composite material, its manufacturing method and its use |
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| Publication Number | Publication Date |
|---|---|
| JP2003080510A true JP2003080510A (en) | 2003-03-19 |
Family
ID=19100005
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011147604A (en) * | 2010-01-21 | 2011-08-04 | Asahi Kasei Chemicals Corp | Surface treatment sheet for board of pinball game machine |
| JP2013022757A (en) * | 2011-07-15 | 2013-02-04 | Sumitomo Forestry Co Ltd | Method for manufacturing woody product |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5945138A (en) * | 1982-09-07 | 1984-03-13 | Jujo Paper Co Ltd | Fibrous board for molding |
| JPS59127747A (en) * | 1983-01-06 | 1984-07-23 | Matsushita Electric Works Ltd | Static eliminating board |
| JPS61269399A (en) * | 1985-05-24 | 1986-11-28 | 株式会社ザイエンス | Improved wood for shielding electromagnetic shield |
| JPS6458502A (en) * | 1987-08-31 | 1989-03-06 | Norinsuisansho Ringyo Shikenjo | Wooden fiberboard equipped with electromagnetic shield property and preparation thereof |
| JPH0346384A (en) * | 1989-07-14 | 1991-02-27 | Nec Corp | Plane-type variable wavelength light emitting element |
| JPH03151698A (en) * | 1989-11-08 | 1991-06-27 | Kajima Corp | Radio wave absorbing material |
| JPH0724110A (en) * | 1993-07-14 | 1995-01-27 | Sophia Co Ltd | Pachinko game machine |
| JP2001031772A (en) * | 1999-07-23 | 2001-02-06 | Osaka Gas Co Ltd | Resin molding for handling electric and electric parts and its production method |
-
2001
- 2001-09-11 JP JP2001275077A patent/JP2003080510A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5945138A (en) * | 1982-09-07 | 1984-03-13 | Jujo Paper Co Ltd | Fibrous board for molding |
| JPS59127747A (en) * | 1983-01-06 | 1984-07-23 | Matsushita Electric Works Ltd | Static eliminating board |
| JPS61269399A (en) * | 1985-05-24 | 1986-11-28 | 株式会社ザイエンス | Improved wood for shielding electromagnetic shield |
| JPS6458502A (en) * | 1987-08-31 | 1989-03-06 | Norinsuisansho Ringyo Shikenjo | Wooden fiberboard equipped with electromagnetic shield property and preparation thereof |
| JPH0346384A (en) * | 1989-07-14 | 1991-02-27 | Nec Corp | Plane-type variable wavelength light emitting element |
| JPH03151698A (en) * | 1989-11-08 | 1991-06-27 | Kajima Corp | Radio wave absorbing material |
| JPH0724110A (en) * | 1993-07-14 | 1995-01-27 | Sophia Co Ltd | Pachinko game machine |
| JP2001031772A (en) * | 1999-07-23 | 2001-02-06 | Osaka Gas Co Ltd | Resin molding for handling electric and electric parts and its production method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011147604A (en) * | 2010-01-21 | 2011-08-04 | Asahi Kasei Chemicals Corp | Surface treatment sheet for board of pinball game machine |
| JP2013022757A (en) * | 2011-07-15 | 2013-02-04 | Sumitomo Forestry Co Ltd | Method for manufacturing woody product |
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