JPH0561342U - Conductive flooring - Google Patents

Abstract

(57)【要約】 （修正有） 【目的】 導電性粒子の摩耗性、着色性及び非導電性粒
子の帯電性についての問題点を解決し、優れた電気性
能、摩耗性及び装飾性を有する導電性床材を提供する。 【構成】 カーボンブラック粉末等の導電性充填剤を混
合してなる表面抵抗値が１０³ 〜１０⁵ Ωの導電性熱可
塑性樹脂裏面層Ｂの表面に、黒鉛質炭素繊維を１０〜３
０％混合してなる表面抵抗値が１０⁴ 〜１０⁶ Ωで粒径
が０．５〜２mmの着色導電性熱可塑性樹脂粒子１と帯電
防止界面滑性剤を混合してなる表面抵抗値が１０⁷ 〜１
０¹⁰Ωで粒径が０．５〜２mmの着色帯電防止性熱可塑性
樹脂粒子２とを混ぜ合わせて導電性粒子の混合比率が１
０〜３０％である混合粒子を多重に積層・融着して混合
粒子層Ｂを設け、この混合粒子層Ｂの表面に、厚みが
０．１〜１０μで表面抵抗値が１０⁷ 〜１０⁹ Ωの透明
な架橋樹脂保護層Ｃを積層した導電性床材である。 (57) [Summary] (Modified) [Objective] Solves the problems of abrasion and coloring of conductive particles and chargeability of non-conductive particles, and has excellent electrical performance, abrasion and decoration. Provide a conductive flooring. [Composition] Graphite carbon fibers are added to the surface of a conductive thermoplastic resin back surface layer B having a surface resistance value of 10 ³ to 10 ⁵ Ω by mixing a conductive filler such as carbon black powder with 10 to ³ graphite carbon fibers.
The surface resistance value obtained by mixing the antistatic interface lubricant with the colored conductive thermoplastic resin particles 1 having a surface resistance value of 10 ⁴ to 10 ⁶ Ω and a particle size of 0.5 to 2 mm is 0%. 10 ⁷ to 1
When mixed with the colored antistatic thermoplastic resin particles 2 having a particle size of 0 to ¹⁰ Ω and a particle diameter of 0.5 to 2 mm, the mixing ratio of the conductive particles is 1.
A mixed particle layer B is provided by laminating and fusing multiple mixed particles of 0 to 30% in multiple layers, and the mixed particle layer B has a thickness of 0.1 to 10 μm and a surface resistance value of 10 ⁷ to 10 ^9. It is a conductive flooring material in which a transparent crosslinked resin protective layer C of Ω is laminated.

Description

【考案の詳細な説明】[Detailed description of the device]

【０００１】[0001]

【産業上の利用分野】[Industrial applications]

本考案は半導体製造工場、精密機械組立工場、病院、電算室等において、静電 気による障害、災害を防止するために使用される導電性床材に関する。 The present invention relates to a conductive flooring material used in semiconductor manufacturing factories, precision machine assembly factories, hospitals, computer rooms, etc. to prevent damages and disasters due to electrostatic discharge.

【０００２】[0002]

【従来の技術】[Prior Art]

従来、半導体製造工場、精密機械組立工場、病院、電算室等には、静電気によ る障害、災害を防止するために、カーボンブラックを混合した黒色の導電性熱可 塑性樹脂裏面層の表面に、カーボンブラックを混合した黒色の導電性熱可塑性樹 脂粒子と着色した非導電性熱可塑性樹脂粒子との混合粒子を融着・積層し、黒色 の導電性粒子を表面に部分的に露出させ、厚み方向に部分的に連結しながら前記 導電性の裏面層と接合せしめて表面が多色系とした導電性床材が意匠的に優れて いるので、多く使用されている。 Conventionally, in semiconductor manufacturing plants, precision machine assembly plants, hospitals, computer rooms, etc., in order to prevent damages and disasters due to static electricity, the surface of the black conductive thermoplastic resin back layer mixed with carbon black has been used. , Fused and laminated mixed particles of black conductive thermoplastic resin particles mixed with carbon black and colored non-conductive thermoplastic resin particles to partially expose the black conductive particles on the surface, A conductive flooring material having a multicolored surface by being joined to the conductive back surface layer while partially connecting in the thickness direction is excellent in design, and thus is often used.

【０００３】[0003]

【考案が解決しようとする課題】[Problems to be solved by the device]

しかし、導電性裏面層の表面にカーボンブラックを混合してなる導電性の黒色 粒子と非導電性の着色粒子との混合粒子を積層した導電性床材は、表面に露出し た導電性黒色粒子が所望の電気性能を得るために多量のカーボンブラックを添加 しているために摩耗しやすい。そのために半導体製造工場において、キャスター や作業靴等で表面が摩耗し、それによって浮遊したカーボンブラック微粒子が半 導体製造工程で好ましくないと考えられている。又、導電性粒子がカーボンブラ ックを混合しているために黒色で着色が困難であり、導電性粒子の混合比率を高 めると、表面の黒色が強くなり全体に暗色となり意匠性が悪くなるために導電性 粒子の混合比率は１０％前後で非導電性着色粒子の占める割合が大きく、非導電 性着色粒子の表面抵抗値は１０¹²〜１０¹³Ωで帯電しやすく、導電性粒子と非導 電性粒子との混合粒子を導電性裏面層の表面に散布する際に、非導電性粒子が混 合時の摩擦で帯電して非導電性粒子が凝集したり、機械に付着して散布ムラを生 じて品質的問題があると共に表面の非導電性粒子による連続的分布面積が大きい 部分に帯電した静電気は充分に除電されにくいために好ましくない。 更に、最近は、病院、電算室の導電性床材に黒色以外の着色導電性粒子からな る明るい色調の装飾性に優れた床材が望まれている。However, the conductive flooring material in which the mixed particles of conductive black particles mixed with carbon black and non-conductive colored particles are laminated on the surface of the conductive back surface layer is the conductive black particles exposed on the surface. However, since a large amount of carbon black is added to obtain the desired electric performance, it is easily worn. For this reason, it is considered that the surface of the semiconductor manufacturing plant is worn by casters, work shoes, etc., and the resulting carbon black fine particles are not preferable in the semiconductor manufacturing process. In addition, since the conductive particles are mixed with carbon black, it is black and difficult to be colored.If the mixing ratio of the conductive particles is increased, the surface black becomes stronger and the entire surface becomes a dark color, resulting in a good design. Since the mixing ratio of the conductive particles is around 10%, the non-conductive colored particles account for a large proportion, and the surface resistance value of the non-conductive colored particles is 10 ¹² to 10 ¹³ Ω, which is easily charged and the conductive particles are When the mixed particles of the non-conductive particles and the non-conductive particles are sprayed on the surface of the conductive back surface layer, the non-conductive particles are charged by friction when mixed and the non-conductive particles agglomerate or adhere to the machine. As a result, there is a quality problem due to uneven spraying, and static electricity charged on a portion of the surface where non-conductive particles have a large continuous distribution area is not preferable because it is difficult to sufficiently eliminate the static electricity. Furthermore, recently, there has been a demand for a conductive floor material for hospitals and computer rooms, which is made of colored conductive particles other than black and has a bright color tone and excellent decorativeness.

【０００４】[0004]

【課題を解決するための手段】[Means for Solving the Problems]

本考案は導電性裏面層の表面に形成した導電性粒子の摩耗性、着色性及び非導 電性粒子の帯電性について上記のかかる問題点を解決し、優れた電気性能、摩耗 性及び装飾性を有する導電性床材を提供せんとするもので、その手段はカーボン ブラック等の導電性充填剤を混合してなる表面抵抗値が１０³ 〜１０⁵ Ωの導電 性熱可塑性樹脂裏面層の表面に、黒鉛質炭素繊維を混合してなる表面抵抗値が１ ０⁴ 〜１０⁶ Ωで粒径が０．５〜２mmの着色導電性熱可塑性樹脂粒子と帯電防止 界面滑性剤を混合してなる表面抵抗値が１０⁷ 〜１０¹⁰Ωで粒径が０．５〜２mm 着色帯電防止性熱可塑性樹脂粒子とを混ぜ合して導電性粒子の混合比率が１０〜 ３０％である混合粒子を多重に積層・融着して混合粒子層を一体化したことを特 徴とする。The present invention solves the above-mentioned problems with respect to the wearability and colorability of the conductive particles formed on the surface of the conductive back surface layer and the chargeability of the non-conductive particles, resulting in excellent electrical performance, wear resistance and decorativeness. The surface of the back surface layer of the conductive thermoplastic resin having a surface resistance value of 10 ³ to 10 ⁵ Ω, which is formed by mixing a conductive filler such as carbon black, is provided. In addition, a colored conductive thermoplastic resin particle having a surface resistance value of 10 ⁴ to 10 ⁶ Ω and a particle diameter of 0.5 to 2 mm formed by mixing graphite carbon fiber and an antistatic interfacial lubricant are mixed. The mixed particles having a surface resistance value of 10 ⁷ to 10 ¹⁰ Ω and a particle size of 0.5 to 2 mm and a colored antistatic thermoplastic resin particle are mixed to have a mixing ratio of conductive particles of 10 to 30%. The feature is that the mixed particle layers are integrated by laminating and fusing multiple layers.

【０００５】[0005]

【実施例】【Example】

本考案の実施例を図面い基いて説明する。 図１は本考案の導電性床材の一部切欠した斜視図を示すもので、Ａはカーボン ブラックを混合してなる導電性熱可塑性樹脂裏面層を示し、Ｂは該裏面層Ａ上に 積層・融着された混合粒子層であり、１は黒鉛質炭素繊維を混合してなる着色導 電性熱可塑性樹脂粒子、２は帯電防止界面滑性剤を混合してなる非導電性の着色 帯電防止性熱可塑性粒子を示し、前記着色導電性熱可塑性樹脂粒子１が厚み方向 に連続的に接合しながら裏面導電層Ｂと結合している。 図２は導電性床材の耐摩耗等の表面保護のために、混合粒子層Ｂの表面に透明 な架橋樹脂保護層Ｃを薄膜状に積層した状態の断面図を示す。 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway perspective view of a conductive flooring of the present invention, where A is a conductive thermoplastic resin back surface layer mixed with carbon black, and B is a layer laminated on the back surface layer A.・ Fused mixed particle layer, 1 is a colored conductive thermoplastic resin particle prepared by mixing graphite carbon fiber, 2 is a non-conductive colored charged mixture prepared by mixing an antistatic interface lubricant The colored conductive thermoplastic resin particles 1 are bonded to the back surface conductive layer B while continuously bonding in the thickness direction. FIG. 2 is a cross-sectional view showing a state in which a transparent crosslinked resin protective layer C is laminated in a thin film on the surface of the mixed particle layer B for surface protection such as abrasion resistance of the conductive floor material.

【０００６】 導電性熱可塑性樹脂裏面層Ａはケッチンブラック等の導電性カーボンブラック を軟質塩化ビニル樹脂、エチレン−酢酸ビニル共重合樹脂、エチレン−アクリレ ート共重合樹脂、熱可塑性ウレタン樹脂等の熱可塑性樹脂に表面抵抗値が１０³ 〜１０⁵ Ωになるように任意の量を混合して、カレンダー成形機、押出成形機な どで０．５〜１mmの厚みのシートに成形する。The back surface layer A of the conductive thermoplastic resin is made of conductive carbon black such as Ketchin black, which is made of soft vinyl chloride resin, ethylene-vinyl acetate copolymer resin, ethylene-acrylate copolymer resin, thermoplastic urethane resin, or the like. An arbitrary amount is mixed with the plastic resin so that the surface resistance value becomes 10 ³ to 10 ⁵ Ω, and a sheet having a thickness of 0.5 to 1 mm is formed by a calender molding machine, an extrusion molding machine or the like.

【０００７】 導電性粒子１は繊維長が０．５〜２mmで炭素化率が９７％以上の黒鉛質炭素繊 維を、表面抵抗値が１０⁴ 〜１０⁶ Ωになるように上記と同様な熱可塑性樹脂に １０〜３０％混合して、カレンダー成形機や押出成形機でシート化したものを粒 径が０．５〜２mmの粒子に粉砕機で粉砕したものであり、着色前は灰色で任意の 着色剤で着色が可能である。 そして、着色した導電性粒子１は熱可塑性樹脂に黒鉛質炭素繊維及び着色剤等 を適当量混合してカレンダー成形機、押出成形機で０．５〜２mmの厚みにシート 化後、粉砕機で粉砕して、粒径が０．５〜２mmの粒子とする。The conductive particles 1 are made of graphite carbon fibers having a fiber length of 0.5 to 2 mm and a carbonization rate of 97% or more, and the surface resistance value is 10 ⁴ to 10 ⁶ Ω in the same manner as above. It is a mixture of 10 to 30% of thermoplastic resin and made into a sheet by a calender molding machine or an extrusion molding machine, and crushed by a crusher into particles with a particle diameter of 0.5 to 2 mm. Coloring is possible with any colorant. The colored conductive particles 1 are made by mixing a thermoplastic resin with an appropriate amount of graphitic carbon fiber, a coloring agent and the like to form a sheet having a thickness of 0.5 to 2 mm with a calender molding machine or an extrusion molding machine, and then using a crusher. Pulverize to give particles with a particle size of 0.5-2 mm.

【０００８】 しかし、同じ炭素繊維でも炭化率が９０〜９５％の炭素質炭化繊維の場合は黒 鉛質炭素繊維に比べて導電性が悪く、該導電性粒子１の好ましい表面抵抗として １０⁵ Ωを得るためには黒鉛質炭素繊維は２０％の混合率で良いが、炭素質炭素 繊維は３５〜４０％の混合率を必要とし、更に、弾性率が低いので、シート成形 時にせん断等の作用で破損して繊維が短くなり、導電性にバラツキが生じやすい こと及びシートが黒色になり、任意の着色が困難であること及び摩耗性も悪くな る等により好ましくない。However, even in the case of the same carbon fiber, the carbonaceous carbonized fiber having a carbonization rate of 90 to 95% has poorer conductivity than the black leaded carbon fiber, and the preferable surface resistance of the conductive particles 1 is 10 ⁵ Ω. In order to obtain the above, the mixing ratio of graphitic carbon fiber may be 20%, but the mixing ratio of carbonaceous carbon fiber is required to be 35-40%. Moreover, since the elastic modulus is low, the action such as shearing at the time of sheet forming It is not preferable because it is damaged by damage due to short-circuiting, the fibers become short, conductivity is likely to vary, the sheet becomes black, arbitrary coloring is difficult, and abrasion is deteriorated.

【０００９】 更に、酸化亜鉛、酸化チタン等の無機粒子に導電性金属を蒸着した導電性粒子 の場合は上記の電気性能を得るためには６０％以上の混合率を必要とし、シート は任意の着色は可能であるが、電気性能にバラツキを生じやすいこと及び耐摩耗 性に欠ける等により好ましくない。Further, in the case of conductive particles obtained by depositing a conductive metal on inorganic particles such as zinc oxide and titanium oxide, a mixing ratio of 60% or more is required to obtain the above electrical performance, and the sheet may be any Coloring is possible, but it is not preferable because it tends to cause variations in electrical performance and lacks wear resistance.

【００１０】 着色帯電防止性粒子２は上記の熱可塑性樹脂に表面抵抗値が１０⁷ 〜１０¹⁰Ω になるように非イオン系及び陽イオン系の帯電防止界面活性剤を１〜５％及び着 色剤を混合して、カレンダー成形機、押出成形機で０．５〜２mmにシート化後、 粉砕機で粉砕して粒径が０．５〜２mmの非導電性の粒子とする。The colored antistatic particles 2 are coated with the above-mentioned thermoplastic resin in an amount of 1 to 5% of a nonionic or cationic antistatic surfactant so as to have a surface resistance value of 10 ⁷ to 10 ¹⁰ Ω. A colorant is mixed and formed into a sheet of 0.5 to 2 mm by a calender molding machine or an extrusion molding machine, and then pulverized by a pulverizer to obtain non-conductive particles having a particle diameter of 0.5 to 2 mm.

【００１１】 このようにして得られた導電性着色粒子１と帯電防止性着色粒子２とを、導電 性着色粒子１の混合比率が１０〜３０％であり、３〜４色の着色粒子からなる混 合粒子を、あらかじめシート化した導電性裏面シートＡの表面に２〜３mmの厚み に粒子が２〜４重に重なり合う用に散布後、１８０〜２００℃に加熱圧着して、 混合粒子同士を融着して混合粒子層Ｂを形成すると同時に裏面層Ａと一体に積層 する。The conductive colored particles 1 and the antistatic colored particles 2 thus obtained have a mixing ratio of the conductive colored particles 1 of 10 to 30% and are composed of colored particles of 3 to 4 colors. The mixed particles are sprayed on the surface of the electrically conductive back surface sheet A which has been formed into a sheet in advance so that the particles have a thickness of 2 to 3 mm so as to be overlapped 2 to 4 times, and then heated and pressed at 180 to 200 ° C. At the same time as the mixed particle layer B is formed by fusion, the mixed particle layer B and the back surface layer A are integrally laminated.

【００１２】 更に、表面の耐摩耗性を良くするために、ウレタン系、アクリル系等の架橋樹 脂に帯電防止剤を混合して、表面抵抗値１０⁷ 〜１０⁹ Ωで、厚みが０．１〜１ ０μの透明保護層Ｃを混合粒子層Ｂの表面に設けても良いが、厚みが１５μ以上 になると導電性が悪くなり好ましくない。Further, in order to improve the abrasion resistance of the surface, an antistatic agent is mixed with urethane-based, acrylic-based, or the like crosslinked resin, and the surface resistance value is 10 ⁷ to 10 ⁹ Ω and the thickness is 0. A transparent protective layer C having a thickness of 1 to 10 μm may be provided on the surface of the mixed particle layer B, but if the thickness is 15 μm or more, the conductivity is deteriorated, which is not preferable.

【００１３】 次に本考案の具体的な実施の態様を示す。 塩化ビニル樹脂１００重量部、ジオクチルフタレート（可塑剤）５０重量部、 バリウム−亜鉛系安定剤３重量部、炭酸カルシウム（充填剤）１０重量部、黒鉛 質炭素繊維（導電剤、繊維長０．７mm、糸径１３μ）５５重量部（２４．７％） 、酸化チタン（着色剤）５重量部を配合・混合後、押出成形機で厚みが１mmのシ ートを作成し、次に、粉砕機で粉砕して平均粒径１mmのグレー系の着色導電性粒 子を得る。一方、塩化ビニル樹脂１００重量部、ジオクチルフタレート（可塑剤 ）５０重量部、バリウム−亜鉛系安定剤３重量部、陽イオン系界面活性剤（帯電 防止剤）３重量部、炭酸カルシウム（充填剤）６０重量部、フタロシアニングリ ーン（着色剤）３重量部を配合、混合後、押出成形機で厚みが１mmのシートを作 成し、次に粉砕機で粉砕して平均粒径が１mmのグリーン系の着色帯電防止粒子を 得る。 得られたグレー系の導電性粒子とグリーン系の帯電防止粒子を１対９の割合で 混合して表層の混合粒子とする。Next, a concrete embodiment of the present invention will be described. Vinyl chloride resin 100 parts by weight, dioctyl phthalate (plasticizer) 50 parts by weight, barium-zinc stabilizer 3 parts by weight, calcium carbonate (filler) 10 parts by weight, graphitic carbon fiber (conductive agent, fiber length 0.7 mm) , Yarn diameter 13μ) 55 parts by weight (24.7%) and titanium oxide (colorant) 5 parts by weight were mixed and mixed, and a sheet having a thickness of 1 mm was prepared by an extrusion molding machine, and then a crusher was used. Pulverize with to obtain a gray colored conductive particle having an average particle size of 1 mm. On the other hand, 100 parts by weight of vinyl chloride resin, 50 parts by weight of dioctyl phthalate (plasticizer), 3 parts by weight of barium-zinc stabilizer, 3 parts by weight of cationic surfactant (antistatic agent), calcium carbonate (filler) 60 parts by weight and 3 parts by weight of phthalocyanine green (coloring agent) are mixed and mixed, and then a sheet with a thickness of 1 mm is formed with an extruder, and then crushed with a crusher to obtain a green having an average particle size of 1 mm A system of colored antistatic particles is obtained. The obtained gray-based conductive particles and green-based antistatic particles are mixed at a ratio of 1: 9 to obtain surface-layer mixed particles.

【００１４】 次に、塩化ビニル樹脂１００重量部、ジオクチルフタレート７０重量部、バリ ウム−亜鉛系安定剤３重量部、カーボンブラック３０重量部、炭酸カルシウム１ ００重量部を配合・混合後、ロールで圧延して厚みが１mmの導電性裏面シートを 作成後、該シートの表面に上記混合粒子を２．５mmの厚さに均一に散布後、２０ ０℃で加熱・押圧して粒子同士を融着すると同時に裏面シートに一体積層して全 厚が２mmのグレー・グリーン系の２色模様のシート状の導電性床材を得た。得ら れた床材をカットしてタイル状にしても良い。 得られた導電性床材の電気性能は表面抵抗値が１．５×１０⁵ Ω、体積抵抗値 が３．５×１０⁵ Ω、帯電圧は零Ｖであった。Next, 100 parts by weight of vinyl chloride resin, 70 parts by weight of dioctyl phthalate, 3 parts by weight of barium-zinc stabilizer, 30 parts by weight of carbon black, and 100 parts by weight of calcium carbonate were mixed and mixed, and then rolled. After rolling to form a conductive backside sheet with a thickness of 1 mm, the above mixed particles are evenly spread over the surface of the sheet to a thickness of 2.5 mm, and then heated and pressed at 200 ° C to fuse the particles together. At the same time, it was integrally laminated on the back sheet to obtain a sheet-like conductive flooring material having a gray-green two-color pattern with a total thickness of 2 mm. The floor material obtained may be cut into tiles. Regarding the electric performance of the obtained conductive flooring material, the surface resistance value was 1.5 × 10 ⁵ Ω, the volume resistance value was 3.5 × 10 ⁵ Ω, and the electrification voltage was 0V.

【００１５】[0015]

【効果】【effect】

本考案はカーボンブラック粉末等の導電性充填剤を混合してなる表面抵抗値が １０³ 〜１０⁵ Ωの導電性熱可塑性樹脂裏面層の表面に、黒鉛質炭素繊維を１０ 〜３０％混合してなる表面抵抗値が１０⁴ 〜１０⁶ Ωで粒径が０．５〜２mmの着 色導電性熱可塑性樹脂粒子と帯電防止界面滑性剤を混合してなる表面抵抗値が１ ０⁷ 〜１０¹⁰Ωで粒径が０．５〜２mmの着色帯電防止性熱可塑性樹脂粒子とを混 ぜ合わせて導電性粒子の混合比率が１０〜３０％である混合粒子を多重に積層・ 融着して混合粒子層を設けたこと及びこの導電性床材の混合粒子層の表面に、厚 みが０．１〜１０μで表面抵抗値が１０⁷ 〜１０⁹ Ωの透明な架橋樹脂保護層を 積層したことにより、表層における導電性粒子の導電剤として黒鉛質炭素繊維を 混合することによって、任意の色に着色が可能となり装飾性に優れ、更に、黒鉛 質炭素繊維混合粒子は耐摩耗性に優れているので、床面の摩耗による導電性微粒 子の浮遊による障害の発生は非常に少なく、更に、非導電性粒子に帯電防止性を 付与することによって、非導電性粒子の分布部分に帯電することなく除電される ために電気的障害がなくなり導電性能に優れた床材を得ることができる。The present invention mixes 10 to 30% of graphitic carbon fiber on the surface of the back surface layer of conductive thermoplastic resin having a surface resistance value of 10 ³ to 10 ⁵ Ω, which is formed by mixing a conductive filler such as carbon black powder. Having a surface resistance value of 10 ⁴ to 10 ⁶ Ω and a particle diameter of 0.5 to 2 mm, which is a mixture of colored conductive thermoplastic resin particles and an antistatic interface lubricant, has a surface resistance value of 10 ⁷ to 10 ¹⁰ Ω and colored antistatic thermoplastic resin particles having a particle size of 0.5 to 2 mm are mixed, and mixed particles having a mixing ratio of conductive particles of 10 to 30% are laminated and fused. And a transparent crosslinked resin protective layer having a thickness of 0.1 to 10 μm and a surface resistance value of 10 ⁷ to 10 ⁹ Ω is laminated on the surface of the mixed particle layer of the conductive flooring. By doing so, by mixing the graphitic carbon fiber as a conductive agent for the conductive particles in the surface layer, Since it can be colored in any color and has excellent decorativeness, and because the graphite-carbon fiber mixed particles have excellent wear resistance, the occurrence of obstacles due to the floating of conductive fine particles due to floor wear is extremely high. Furthermore, by imparting antistatic properties to the non-conductive particles, static electricity is eliminated without charging the distribution area of the non-conductive particles, so there is no electrical obstacle and a flooring material with excellent conductivity is obtained. You can

【図面の簡単な説明】[Brief description of drawings]

【図１】 一部切欠した斜視図FIG. 1 is a partially cutaway perspective view.

【図２】 断面図[Figure 2] Sectional view

【符号の説明】[Explanation of symbols]

Ａは導電性熱可塑性樹脂裏面層、Ｂは混合粒子層、Ｃは
透明な架橋樹脂保護層、１は着色導電性熱可塑性樹脂粒
子、２は着色帯電防止性熱可塑性樹脂粒子A is a back surface layer of a conductive thermoplastic resin, B is a mixed particle layer, C is a transparent crosslinked resin protective layer, 1 is a colored conductive thermoplastic resin particle, and 2 is a colored antistatic thermoplastic resin particle.

───────────────────────────────────────────────────── フロントページの続き (72)考案者 本多 寛 茨城県土浦市東中貫町５−３ ロンシール 工業株式会社技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Honda 5-3 Higashi-Nakanakamachi, Tsuchiura-shi, Ibaraki Ronseal Industrial Co.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】 カーボンブラック粉末等の導電性充填剤
を混合してなる表面抵抗値が１０³ 〜１０⁵ Ωの導電性
熱可塑性樹脂裏面層の表面に、黒鉛質炭素繊維を１０〜
３０％混合してなる表面抵抗値が１０⁴ 〜１０⁶ Ωで粒
径が０．５〜２mmの着色導電性熱可塑性樹脂粒子と帯電
防止界面滑性剤を混合してなる表面抵抗値が１０⁷ 〜１
０¹⁰Ωで粒径が０．５〜２mmの着色帯電防止性熱可塑性
樹脂粒子とを混ぜ合わせて導電性粒子の混合比率が１０
〜３０％である混合粒子を多重に積層・融着した混合粒
子層を設けてなることを特徴とする導電性床材。1. A graphitic carbon fiber is provided on the surface of a back surface layer of a conductive thermoplastic resin having a surface resistance value of 10 ³ to 10 ⁵ Ω, which is obtained by mixing a conductive filler such as carbon black powder.
A surface resistance value of 10% by mixing 30% and a surface resistance value of 10 ⁴ to 10 ⁶ Ω and a particle diameter of 0.5 to 2 mm by mixing colored conductive thermoplastic resin particles and an antistatic interfacial lubricant. ⁷ to 1
When mixed with the colored antistatic thermoplastic resin particles having a particle size of 0 to ¹⁰ Ω and a particle size of 0.5 to 2 mm, the mixing ratio of the conductive particles is 10
A conductive flooring material comprising a mixed particle layer in which mixed particles of up to 30% are stacked and fused in multiple layers. 【請求項２】 上記導電性床材の混合粒子層の表面に、
厚みが０．１〜１０μで表面抵抗値が１０⁷ 〜１０⁹ Ω
の透明な架橋樹脂保護層を積層したことを特徴とする導
電性床材。2. The surface of the mixed particle layer of the conductive floor material,
Thickness is 0.1-10μ and surface resistance is 10 ⁷ -10 ⁹ Ω
An electrically conductive flooring material, characterized in that the transparent crosslinked resin protective layer (1) is laminated.