【発明の詳細な説明】
（産業上の利用分野）
本発明は積層体の被覆による内装下地への導電性付与方
法に間する．
（従来技術とその問題点）
従来より家庭や事務所をはじめとして、手術室、 ＩＣ
工場、化学品製造工場、化学実験室、可燃物倉庫等は室
内での静電気の発生を防止する種々の方法が採られてい
る．
しかし、一般的に導電性を付与するには、カーボンが多
量に混練されるため、色が真っ黒になり意匠性に欠けた
ものであった．
（問題点を解決する手段）
本願発明は上記問題点を解決したもので、貫通孔が設け
られた着色合成樹脂表面層に導電性材料を配合した合成
樹脂下地層を加熱状熊で積層して、下地層が上記貫通孔
に充填された上層と、導電性下地層である下層が一体化
された積層体を形成し、得られた積層体で内装下地を被
覆することを特徴とする内装下地への導電性付与方法、
をその要旨とする．以下図面に基づいて本発明を説明す
る．
１は第１図から第３図は導電性付与方法の工程図である
．
表面層１は化粧材の表面部分となる層で、ポリ塩化ビニ
ル（ＰＶＣ）、エチレンー酢酸ビニル共重合体（ＥＶＡ
）、ポリウレタンの軟質プラスチックに、適宜意匠性が
得られるように、着色または印刷が行われている．この
表面層には貫通孔２があけられる．貫通孔２は円形、正
方形、星型等の幾何学模様でもよいし、商品適性に応じ
て動物、漫画キャラクターその他任意の模様でもよい．
買通孔の形状はいずれの形でもよく、大きさも特に問わ
ないが、表面に発生した静電気を速やかに逃がすには、
人体との接触機会が多ければ多いほど良く、また意匠的
に面積はあまり大きくならない方が好ましい．
具体的には一つの貫通孔の面積は ０．００２ｃｍ’な
いし２０ｃｍ２で間孔面積は０．１％ないし８０％が好
ましく、かつ各貫通孔閏の距離は、３ｃｍ以内であるこ
とが好ましい．３は下地層であり、下地層３は前記表面
層と同じ合成樹脂からなり、表面層の直下に設けられる
．表面層には導電性材料４が添加される．
導電性材料としては、導電性カーボンプラック（アセチ
レンブラック、ケッチヱンブラック）、導電性酸化共重
合、導電性酸化チタン、導電性酸化スズ、導電性酸化ア
ンチモン、炭素繊維、金属被覆ガラス繊維、金属被覆合
成議維、ステンレス繊維、導電性ウィスカー硫化鋼処理
合成繊維が示され、とくにケッチェンブラックは導電性
が優れる．
このように本発明に於ける導電性は、導電性カーボンを
下地層に添加することにより付与されるのはもちろん、
また特により意匠性が求められる場所では金属粉や白色
系の導電性粉末または炭素繊維を添加して付与される．
上記下地屠３は１００〜２５０℃で加圧変形可能に加賠
されており、積層ロール５、５′で加圧積層して本発明
の積層体６を得る．貫通孔には下地層組成分が充填され
て導電性部分が表面に露出した構成になる．
表面層１と貢通孔に充填された導電性合成樹脂７の組合
せからなる上層８と、この上層の下面を覆う導電性を有
する下地贋である下層９とが積層一体化され、上層の゜
貫通孔が下層を形成する４！＃脂により充満され得られ
た導電性積層体６を内装下地Ｇに貼着することにより室
内に導電性を付与することができる．また、上記導電性
積層体には、望ましくはメッシュ状基布ｌＯが積層され
る．メッシュ状基布は寸法安定化が向上するほか、下層
露出部分と内装下地が直接接触するので、静電気の拡散
を効果的にするため、顕著な導電性が得られる．
得られた積層体シートは好ましくは導電性接は導電性下
Ｍ９まｋは９′を通って拡散する．また目地部分にも導
電剤を配合したシーミング材１２を注入することにより
、内装下地への導電性付与効果がさらに向上した．
（発明の効果）
■本発明により装飾性に富み、かつ導電性に優れた導電
性の付与方法が得られた．
■積層体における貫通孔を導電性樹脂で充填さ■
■
実
せるとともに、この同じ組成物からなる下層と上層が一
体となって、電気的につながっているため、積層体表面
層に発生した静電気を速やかに拡散することができた．
積層体を内装下地に貼着する際、導電性のシーミング剤
が目地部分に適用され、積層体同士が水平方向に電気的
につながるので静電気の拡散ＲＮを大きくすることがで
きるとともに、アースの設置も数が少なくて済んだ．本
発明において導電性は、カーボンを添加することによっ
ても付与されるが、金属粉や炭素繊維、白色系の導電性
粉末を添加することで、室内により意匠性のある内装と
、導電性を付与することができた．
施ｆＭ１
厚さ ０．３ｍｍの軟質ＰｖＣからなる表面シートに径
が２ｍｍでピッチが１５ｍｍのパンチングを行い貫通孔
を形成した．この表面シートを下記配合Ａの １．５ｍ
ｍの導電性樹脂層を１７０℃で積層し、貫通孔に上記樹
脂組成物を充填させ、充＊［分の表画を露出させ、得ら
れた積層体の下部にメッシュ状の基布を積層した．
部は重量部である．
配 合 Ａ （部）Ｐ
Ｖ Ｃ １００
可塑剤（ＤＯＰ） ７０
安定剤（Ｂａ−Ｚｎ系） ４
加工助剤 ４
ケッチェンブラックＥＣ ２３
炭酸カルシウム １８０
このようにして得られた導電性内装材を下記の配合Ｂの
２液性導電性接着剤で内装下地に施工したところＮＦＰ
Ａ法で表ｉ＃抵抗値は、１．０Ｘ１０’， 漏洩抵抗
値１！１．ＯＸ１０’Ｑであった．
この結果内装下地に適度の意匠性と導電性を付与するこ
とができた．
配 合 Ｂ
主 剤 （部） 硬化剤 （部）エボ
キシ樹脂 １００ ボリアミドアミン１００酢ビ系樹脂
※＋ ９５ キシレン樹脂 １５０黒 鉛
１００ 黒 鉛 ２
７ ０メタノール ５０ メタノール １４０
（部〉は重合部である
※， 酢酸ビニルーアクリル系コボリマーこのように
本発明により効果的に静電スを拡散し、内装下地に導電
性を付与することかでき た．
実
施 例 ２
導電性下地層を配合Ｃの明色樹脂組成物とした他は実施
例ｌと同様に積層体を形成し、内装下地を被覆した．
配 合 Ｃ
Ｐ Ｖ Ｃ
導電性可塑剤
導電性酸化チタン
加工助剤
（部）
１００
６ ０
６ ０
４
積層体は、明るい色が得られて意匠性がさらに向上した
上、ＮＦＰＡ法で表百抵抗値は、３．ＯＸ１０’，
漏洩抵抗値で３．０Ｘ１０’Ｑで良好な導電性が富内に
付与された．DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of imparting conductivity to an interior interior base by coating with a laminate. (Conventional technology and its problems) Traditionally, it has been used in homes, offices, operating rooms, and ICs.
Factories, chemical manufacturing plants, chemical laboratories, combustible material warehouses, etc. employ various methods to prevent the generation of static electricity indoors. However, to impart conductivity, a large amount of carbon is generally mixed in, resulting in a pitch black color and lack of design. (Means for Solving the Problems) The present invention solves the above problems by laminating a synthetic resin base layer containing a conductive material on a colored synthetic resin surface layer provided with through holes using a heated layer. An interior base, characterized in that an upper layer in which the base layer is filled in the through-holes and a lower layer that is a conductive base layer are integrated to form a laminate, and the resulting laminate covers the interior base. A method for imparting conductivity to
The gist is: The present invention will be explained below based on the drawings. Figures 1 to 3 are process diagrams of the method for imparting electrical conductivity. Surface layer 1 is a layer that becomes the surface part of the decorative material and is made of polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer (EVA)
), polyurethane soft plastic is colored or printed to give it an appropriate design. A through hole 2 is drilled in this surface layer. The through hole 2 may have a geometric pattern such as a circle, a square, or a star shape, or may have an animal, a cartoon character, or any other pattern depending on the suitability of the product.
The shape of the through hole can be any shape, and the size is not particularly important, but in order to quickly dissipate static electricity generated on the surface,
The more opportunities for contact with the human body, the better, and from a design standpoint, it is preferable that the area is not too large. Specifically, the area of one through hole is preferably 0.002 cm' to 20 cm2, the area of the hole is preferably 0.1% to 80%, and the distance between each through hole is preferably within 3 cm. 3 is a base layer, and the base layer 3 is made of the same synthetic resin as the surface layer, and is provided directly below the surface layer. A conductive material 4 is added to the surface layer. Conductive materials include conductive carbon plaque (acetylene black, ketchen black), conductive oxidized copolymer, conductive titanium oxide, conductive tin oxide, conductive antimony oxide, carbon fiber, metal-coated glass fiber, and metal. Coated synthetic fibers, stainless steel fibers, and synthetic fibers treated with conductive whisker sulfide steel have been shown, and Ketjenblack in particular has excellent conductivity. As described above, conductivity in the present invention is not only imparted by adding conductive carbon to the underlayer, but also by adding conductive carbon to the base layer.
In addition, especially in areas where more design is required, metal powder, white conductive powder, or carbon fiber is added to provide the material.
The base plate 3 is pressurized to be deformable at 100 to 250°C, and laminated under pressure with lamination rolls 5 and 5' to obtain the laminate 6 of the present invention. The through-hole is filled with the underlying layer composition, leaving the conductive part exposed on the surface. An upper layer 8 consisting of a combination of the surface layer 1 and the conductive synthetic resin 7 filled in the through holes, and a lower layer 9 which is a conductive base material that covers the lower surface of this upper layer are laminated and integrated. Through holes form the lower layer 4! # By adhering the conductive laminate 6 filled with fat to the interior base G, conductivity can be imparted to the interior of the room. Moreover, a mesh-like base fabric IO is preferably laminated on the conductive laminate. In addition to improving dimensional stability, the mesh-like base fabric also provides significant electrical conductivity by effectively dispersing static electricity because the exposed lower layer and interior substrate are in direct contact. The resulting laminate sheet preferably has a conductive layer that diffuses through the conductive layer M9 or 9'. Furthermore, by injecting the seaming material 12 containing a conductive agent into the joints, the effect of imparting conductivity to the interior base was further improved. (Effects of the Invention) - The present invention provides a method for imparting conductivity that is highly decorative and has excellent conductivity. ■ Filling the through holes in the laminate with conductive resin ■ ■ In addition to filling the through holes in the laminate with conductive resin, the lower and upper layers made of the same composition are integrated and electrically connected, reducing static electricity generated on the surface layer of the laminate. was able to spread quickly. When attaching the laminate to the interior interior base, a conductive seaming agent is applied to the joints, and the laminates are electrically connected horizontally to each other, increasing the diffusion of static electricity (RN) and making it easier to install ground. The number was also small. In the present invention, conductivity can also be imparted by adding carbon, but by adding metal powder, carbon fiber, or white conductive powder, a more decorative interior design and conductivity can be imparted to the room. We were able to. Application fM1 Through holes were formed in a surface sheet made of soft PvC with a thickness of 0.3 mm by punching with a diameter of 2 mm and a pitch of 15 mm. This top sheet is 1.5m thick with the following composition A.
m conductive resin layers were laminated at 170°C, the through-holes were filled with the resin composition, the surface area of m*[m was exposed, and a mesh-like base fabric was laminated on the bottom of the resulting laminate. did. Parts are parts by weight. Mixture A (Part) P
V C 100 Plasticizer (DOP) 70 Stabilizer (Ba-Zn system) 4 Processing aid 4 Ketjenblack EC 23 Calcium carbonate 180 The conductive interior material thus obtained was mixed into a two-component mixture of the following formulation B. NFP when applied to interior base with conductive adhesive
In method A, the resistance value in Table i# is 1.0X10', and the leakage resistance value is 1!1. It was OX10'Q. As a result, we were able to impart appropriate design and conductivity to the interior base. Compound B Main agent (part) Hardener (part) Epoxy resin 100 Boryamide amine 100 Vinyl acetate resin *+ 95 Xylene resin 150 Graphite
100 Graphite 2
7 0 methanol 50 methanol 140
(Part> is the polymerization part*, vinyl acetate-acrylic copolymer) Thus, according to the present invention, it was possible to effectively diffuse static electricity and impart conductivity to the interior base.Example 2 Conductivity A laminate was formed in the same manner as in Example 1, except that the light-colored resin composition of Formulation C was used as the base layer, and an interior base was coated.Formulation C P V C Conductive plasticizer Conductive titanium oxide processing aid (Parts) 100 6 0 6 0 4 The laminate has a bright color and further improved design, and has a resistance value of 3.OX10' by the NFPA method.
A leak resistance value of 3.0×10'Q gave good electrical conductivity to the inside.
【図面の簡単な説明】[Brief explanation of drawings]
１１１！Ｉから第３図は本発明の導電性を付与する方法
の工程図で、 １は表百層、２は貰通孔、３は導電性下
地層、４は導電材料である．以 上111! Figures I to 3 are process diagrams of the method of imparting conductivity according to the present invention, in which 1 is the top layer, 2 is the through hole, 3 is the conductive base layer, and 4 is the conductive material. that's all