JPH11191328A - Manufacture of conductive resin sheet - Google Patents

Manufacture of conductive resin sheet

Info

Publication number
JPH11191328A
JPH11191328A JP36081997A JP36081997A JPH11191328A JP H11191328 A JPH11191328 A JP H11191328A JP 36081997 A JP36081997 A JP 36081997A JP 36081997 A JP36081997 A JP 36081997A JP H11191328 A JPH11191328 A JP H11191328A
Authority
JP
Japan
Prior art keywords
vinyl chloride
resin sheet
chloride resin
coating film
conductive
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
JP36081997A
Other languages
Japanese (ja)
Inventor
Hideyuki Ami
秀幸 網
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tsutsunaka Plastic Industry Co Ltd
Original Assignee
Tsutsunaka Plastic Industry Co Ltd
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 Tsutsunaka Plastic Industry Co Ltd filed Critical Tsutsunaka Plastic Industry Co Ltd
Priority to JP36081997A priority Critical patent/JPH11191328A/en
Publication of JPH11191328A publication Critical patent/JPH11191328A/en
Pending legal-status Critical Current

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Landscapes

  • Paints Or Removers (AREA)
  • Non-Insulated Conductors (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve the transparency and adhesiveness of a formed conductive paint film and ensure the excellent flatness of the paint film surface by applying a coating material composition consisting of a vinyl chloride resin having a specified average polymerization degree, a conductive powder and an organic solvent to a vinyl chloride resin sheet followed by hardening, and then heating it under pressurization. SOLUTION: The average polymerization degree of a vinyl chloride resin constituting a coating material composition is set to 600-1200. As the vinyl chloride resin, a monomer polymer of vinyl chloride or a vinyl chloride-vinyl acetate copolymer is preferably used. The vinyl acetate content in the vinyl chloride-vinyl acetate copolymer is preferably set to 15 wt.% or less. As the conductive powder, for example, tin oxide is used, and as the organic solvent, for example, methylethylketone is used. The pressurization and heating after application and hardening of the coating material composition is desirably performed at 10 kg/cm<2> or more and 130-190 deg.C.

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】この発明は、表面品質に優れ
た透明導電性樹脂シートを製造する方法に関する。な
お、この明細書において、「シート」の語はシート及び
フィルムの両方を含む意味で用いる。
The present invention relates to a method for producing a transparent conductive resin sheet having excellent surface quality. In this specification, the term “sheet” is used to include both a sheet and a film.

【0002】[0002]

【従来の技術】導電性塗装を施した熱可塑性樹脂シート
は、帯電防止性能に優れることから、例えば半導体ウエ
ハー製造補助部材などの電子部材や電気部材、あるいは
間仕切り、窓枠、壁材、床材などの建築用部材として使
用されているが、従来においては生成した導電性塗膜は
曇りを生じがちであり十分な透明性を確保できない、ま
た塗膜と樹脂シートとの密着性が十分でなく剥離を生じ
やすいという難点があった。
2. Description of the Related Art A thermoplastic resin sheet coated with a conductive material is excellent in antistatic performance. For example, it is an electronic member or an electric member such as a semiconductor wafer production auxiliary member, or a partition, a window frame, a wall material, a floor material. Although used as architectural components such as, but in the past, the resulting conductive coating film tends to be cloudy and can not secure sufficient transparency, and the adhesion between the coating film and the resin sheet is not sufficient There was a drawback that peeling easily occurred.

【0003】そこで、これらの問題を改善するものとし
て、本出願人は、導電性粉末を含む塗料を樹脂シートに
塗布して硬化させた後、この塗膜を有する樹脂シートを
加圧下に加熱する方法を提案している(特公平3−72
169号公報)。この方法により、塗膜の帯電防止性を
保持しつつ、塗膜の透明性と密着性(樹脂シートに対す
る)を大きく向上させることができた。
In order to solve these problems, the present applicant has applied a coating containing conductive powder to a resin sheet, cured the resin, and then heated the resin sheet having the coating under pressure. A method is proposed (Japanese Patent Publication No. 3-72)
169). By this method, the transparency and adhesion (with respect to the resin sheet) of the coating film could be greatly improved while maintaining the antistatic property of the coating film.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記方
法による場合、塗膜を有する樹脂シートを加圧下に加熱
するに際し、塗膜表面の平坦性(鏡面性)向上の観点か
ら鏡面板または鏡面ロールを用いてこれらにより挟圧す
ると、塗膜が鏡面板または鏡面ロールに密着しやすく、
樹脂シート上に形成された塗膜の一部が樹脂シートから
剥離してしまい外観を良好な状態に保てない、即ち良好
な表面品質を確保できないという問題があった。また、
このように形成塗膜に剥離箇所を生じると、その表面に
大きな凹凸を生じて表面平坦性が低下するが、そうする
とこの樹脂シートを介して透視した際に所望の観察箇所
が視認しにくくなったり、物が歪んで見えたり、あるい
は二重に見えたりするなどのために樹脂シートを介して
正確な視認が行えないという難点があった。例えば、ク
リーンルームの間仕切り等の用途で使用される場合には
内部の状況を詳細に正確に把握する必要性から優れた透
視性(結像性)が要求されるが、このような要求に十分
に応えることができるものではなかった。
However, in the case of the above method, when the resin sheet having the coating film is heated under pressure, the mirror plate or the roll is preferably used from the viewpoint of improving the flatness (specularity) of the coating film surface. When pressed by using these, the coating film easily adheres to the mirror plate or mirror roll,
There was a problem that a part of the coating film formed on the resin sheet was peeled off from the resin sheet and the appearance could not be kept in a good state, that is, good surface quality could not be secured. Also,
When a peeling portion is formed in the formed coating film as described above, large irregularities are generated on the surface thereof, and the surface flatness is reduced. However, when viewed through the resin sheet, a desired observation portion becomes difficult to see. However, there is a drawback that accurate visual recognition cannot be performed through the resin sheet because the object looks distorted or appears double. For example, when used in a partition such as a clean room, excellent transparency (imaging) is required from the necessity of accurately grasping the internal state in detail, but such requirements are not sufficiently satisfied. I couldn't respond.

【0005】更に、このように鏡面板または鏡面ロール
に塗膜が密着して残ってしまうと、所望の鏡面状態を維
持できなくなってしまうことから、適宜鏡面板または鏡
面ロールから残着塗膜を取り除かなければならないが、
そうすると製造ラインを停止させなければならず製造効
率が低下するという問題もあった。
Further, if the coating film remains in close contact with the mirror plate or the mirror roll, a desired mirror surface state cannot be maintained. Therefore, the remaining coating film is appropriately removed from the mirror plate or the mirror roll. Must be removed,
In that case, there is a problem that the production line has to be stopped and the production efficiency is reduced.

【0006】この発明は、かかる技術的背景に鑑みてな
されたものであって、形成される導電性塗膜が透明性に
優れるとともに、基材の樹脂シートとの密着性に優れ、
かつ塗膜表面の優れた表面平坦性を確保でき、生産効率
にも優れた導電性樹脂シートの製造方法を提供すること
を目的とする。
The present invention has been made in view of such a technical background, and a conductive coating film to be formed is excellent in transparency and excellent in adhesion to a base resin sheet.
Further, it is an object of the present invention to provide a method for producing a conductive resin sheet which can ensure excellent surface flatness of a coating film surface and has excellent production efficiency.

【0007】[0007]

【課題を解決するための手段】上記目的を達成するため
に、本発明者らは鋭意研究の結果、導電性塗料を樹脂シ
ートに塗布して硬化させた後、加圧下に加熱する方法に
おいて、基材となる樹脂シートとして塩化ビニル樹脂シ
ートを選択し、かつ導電性塗膜を形成する塗料組成物を
構成する樹脂として特定の重合度の塩化ビニル樹脂を用
いることにより、塗膜が鏡面板または鏡面ロールに残着
することがなく、基材シートとの密着性にも優れるとと
もに、優れた表面品質を有する導電性樹脂シートを効率
良く製造でき得ることを見出した。
Means for Solving the Problems In order to achieve the above object, the present inventors have conducted intensive studies and found that a method of applying a conductive paint to a resin sheet, curing the resin sheet, and then heating under pressure, By selecting a vinyl chloride resin sheet as the base resin sheet, and using a vinyl chloride resin having a specific polymerization degree as a resin constituting the coating composition for forming the conductive coating film, the coating film can be a mirror plate or The present inventors have found that a conductive resin sheet having excellent surface quality can be efficiently produced without being left on a mirror roll and having excellent adhesion to a substrate sheet.

【0008】即ち、この発明にかかる導電性樹脂シート
の製造方法は、平均重合度が600〜1200である塩
化ビニル樹脂と、導電性粉末と、有機溶媒とからなる塗
料組成物を塩化ビニル樹脂シートに塗布して硬化させた
後、該硬化塗膜を有する塩化ビニル樹脂シートを加圧下
に加熱することを特徴とするものである。
[0008] That is, the method for producing a conductive resin sheet according to the present invention is a method for preparing a coating composition comprising a vinyl chloride resin having an average degree of polymerization of 600 to 1200, a conductive powder, and an organic solvent. And then curing the vinyl chloride resin sheet having the cured coating under pressure.

【0009】硬化塗膜が加圧下に加熱されることで、塗
膜の透明性が向上する。そして、導電性塗膜を形成する
塗料組成物を構成する樹脂として特定の重合度に規定さ
れた塩化ビニル樹脂が用いられるから、形成された塗膜
が鏡面板または鏡面ロールに残着することがなく、一方
導電性塗膜表面は優れた鏡面性が確保される。しかも鏡
面板等に残着した塗膜を取り除く必要が全くないから製
造効率が向上する。
When the cured coating is heated under pressure, the transparency of the coating is improved. Then, since a vinyl chloride resin specified to a specific polymerization degree is used as a resin constituting the coating composition for forming the conductive coating film, the formed coating film may remain on the mirror plate or mirror roll. On the other hand, the surface of the conductive coating film has an excellent mirror surface. In addition, since there is no need to remove the coating film remaining on the mirror plate or the like, the production efficiency is improved.

【0010】請求項2の発明は、上記請求項1の製造方
法において、塩化ビニル樹脂が塩化ビニルの単量重合体
である構成を採用したものである。塩化ビニルの単量重
合体からなる樹脂が用いられるから、鏡面板または鏡面
ロールへの塗膜の残着が確実に防止される。
A second aspect of the present invention is the method of the first aspect, wherein the vinyl chloride resin is a vinyl chloride monomer. Since a resin made of a monomer polymer of vinyl chloride is used, it is possible to reliably prevent the coating film from remaining on the mirror plate or the mirror roll.

【0011】請求項3の発明は、上記請求項1の製造方
法において、塩化ビニル樹脂が塩化ビニル−酢酸ビニル
共重合体からなり、かつ該共重合体における酢酸ビニル
含量が15重量%以下である構成を採用したものであ
る。酢酸ビニル含量が15重量%以下の塩化ビニル−酢
酸ビニル共重合体が用いられるから、鏡面板または鏡面
ロールへの塗膜の残着が確実に防止される。
According to a third aspect of the present invention, in the method of the first aspect, the vinyl chloride resin comprises a vinyl chloride-vinyl acetate copolymer, and the vinyl acetate content in the copolymer is 15% by weight or less. The configuration is adopted. Since a vinyl chloride-vinyl acetate copolymer having a vinyl acetate content of 15% by weight or less is used, the remaining of the coating film on the mirror plate or the mirror roll is reliably prevented.

【0012】[0012]

【発明の実施の形態】この発明において、塗料組成物を
構成する塩化ビニル樹脂の平均重合度は600〜120
0とする必要がある。平均重合度が600未満では、硬
化塗膜を加圧下に加熱した後に、該塗膜が鏡面板または
鏡面ロールに密着しやすく、樹脂板上に形成された塗膜
の一部が樹脂板から剥離してしまい外観を良好な状態に
保てない。一方平均重合度が1200を超えると、塗料
の粘度が増大して均一な塗布が難しくなる上に、加圧加
熱時の塗膜の流動性が低下するのできれいな鏡面が得ら
れず外観を良好な状態に保てない。中でも平均重合度は
800〜1000とするのが好ましい。
DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the average degree of polymerization of the vinyl chloride resin constituting the coating composition is from 600 to 120.
Must be 0. When the average degree of polymerization is less than 600, after the cured coating film is heated under pressure, the coating film easily adheres to the mirror plate or mirror roll, and a part of the coating film formed on the resin plate is peeled off from the resin plate. And the appearance cannot be maintained in a good condition. On the other hand, when the average degree of polymerization exceeds 1200, the viscosity of the coating increases and uniform application becomes difficult, and the fluidity of the coating at the time of pressurization and heating decreases, so that a clean mirror surface cannot be obtained and the appearance is good. I can't keep it. Among them, the average degree of polymerization is preferably set to 800 to 1,000.

【0013】上記塩化ビニル樹脂としては、特に限定さ
れず、塩化ビニルの単量重合体、または塩化ビニルと酢
酸ビニル、エチレン、プロピレン、等との共重合体を使
用でき、これらは単独でも2種以上の混合物でも使用で
きる。中でも、鏡面板または鏡面ロールへの塗膜の残着
をより確実に防止し得ることから、塩化ビニルの単量重
合体または塩化ビニル−酢酸ビニル共重合体が好適に用
いられる。更に、この塩化ビニル−酢酸ビニル共重合体
における酢酸ビニル含量は15重量%以下とするのが好
ましい。酢酸ビニル含量が15重量%を超えると、加圧
下に加熱する際に希ではあるが塗膜の残着を生じること
があり、残着防止の確実性が低下するので、好ましくな
い。
The vinyl chloride resin is not particularly limited, and may be a monomeric polymer of vinyl chloride or a copolymer of vinyl chloride with vinyl acetate, ethylene, propylene, or the like. Mixtures of the above can also be used. Above all, a monomeric polymer of vinyl chloride or a vinyl chloride-vinyl acetate copolymer is preferably used since the residual of the coating film on the mirror plate or the mirror roll can be more reliably prevented. Further, the vinyl acetate content in the vinyl chloride-vinyl acetate copolymer is preferably 15% by weight or less. If the vinyl acetate content is more than 15% by weight, the film may be rarely left when heated under pressure, but the residue of the film may be undesirably generated.

【0014】また、塗料組成物を構成する導電性粉末と
しては、塗膜に導電性を付与し得るものであれば特に限
定されず、例えば酸化スズ、あるいは酸化スズにアンチ
モン、リン、フッ素、亜鉛、テルル、ビスマス、カドミ
ウムなどを1種または2種以上ドープした粉末、などが
好適に用いられ、その他、酸化インジウムや酸化インジ
ウムにスズなどをドープした粉末、あるいは酸化チタン
系粉末、酸化亜鉛系粉末、導電性金属粉末などが用いら
れる。
The conductive powder constituting the coating composition is not particularly limited as long as it can impart conductivity to the coating film. For example, tin oxide or tin oxide can be made of antimony, phosphorus, fluorine, zinc, or the like. , Tellurium, bismuth, cadmium, etc., doped with one or more kinds, etc., are preferably used. In addition, indium oxide, indium oxide doped with tin or the like, titanium oxide based powder, zinc oxide based powder And a conductive metal powder.

【0015】上記導電性粉末の粒径は、0.4μm以下
であるのが好ましい。0.4μmを超えると、散乱光が
増えて塗膜の透明性が低下するので好ましくない。
The particle size of the conductive powder is preferably 0.4 μm or less. When the thickness exceeds 0.4 μm, the scattered light increases and the transparency of the coating film decreases, which is not preferable.

【0016】上記導電性粉末の配合量は、前記塩化ビニ
ル樹脂100重量部に対して100〜350重量部とす
るのが好ましい。100重量部未満では硬化塗膜の導電
性が低下して十分な帯電防止性能を確保できなくなるの
で、好ましくない。一方、350重量部を超えると、硬
化塗膜の機械的物性および基材である塩化ビニル樹脂シ
ートに対する密着性も低下するので、好ましくない。中
でも、導電性粉末の配合量は、塩化ビニル樹脂100重
量部に対して120〜300重量部とするのがより好ま
しい。
The amount of the conductive powder is preferably 100 to 350 parts by weight based on 100 parts by weight of the vinyl chloride resin. If the amount is less than 100 parts by weight, the conductivity of the cured coating film is lowered, so that sufficient antistatic performance cannot be ensured. On the other hand, when the amount exceeds 350 parts by weight, the mechanical properties of the cured coating film and the adhesion to the vinyl chloride resin sheet as the base material are undesirably reduced. Among them, the amount of the conductive powder is more preferably 120 to 300 parts by weight based on 100 parts by weight of the vinyl chloride resin.

【0017】また、塗料組成物を構成する有機溶媒とし
ては、塩化ビニル樹脂を溶解できるものであれば特に限
定されず、例えばメチルエチルケトン、メチルイソブチ
ルケトン、トルエン、シクロヘキサノン等が挙げられ、
これらは単独でも2種以上の混合物でも使用できる。
The organic solvent constituting the coating composition is not particularly limited as long as it can dissolve the vinyl chloride resin, and examples thereof include methyl ethyl ketone, methyl isobutyl ketone, toluene and cyclohexanone.
These can be used alone or in a mixture of two or more.

【0018】上記有機溶媒の配合量は、特に限定されな
いが、基材である塩化ビニル樹脂シートへの塗布性を良
好にすべく、通常塗料組成物全量に対して60〜85重
量%の割合で配合される。
The amount of the organic solvent is not particularly limited, but is usually 60 to 85% by weight based on the total amount of the coating composition in order to improve the coating property on the vinyl chloride resin sheet as the base material. Be blended.

【0019】なお、塗料組成物には、前記導電性粉末の
分散性を向上させ、粉末粒子同士の再凝集を防止するた
めに、界面活性剤を添加するのが好ましく、このような
界面活性剤としては、特に限定されるものではないが、
例えばアニオン系界面活性剤、ノニオン系界面活性剤、
カチオン系界面活性剤等が挙げられる。
It is preferable that a surfactant is added to the coating composition in order to improve the dispersibility of the conductive powder and to prevent reaggregation of the powder particles. Is not particularly limited,
For example, anionic surfactants, nonionic surfactants,
And cationic surfactants.

【0020】更に、塗料組成物には、前記塩化ビニル樹
脂、導電性粉末、有機溶媒および界面活性剤の他に、諸
性質の向上を目的として、紫外線吸収剤、安定剤、無機
充填剤、シランカップリング剤等を適宜配合しても良
い。
Further, in addition to the vinyl chloride resin, the conductive powder, the organic solvent and the surfactant, an ultraviolet absorber, a stabilizer, an inorganic filler, a silane, A coupling agent or the like may be appropriately compounded.

【0021】この発明の製造方法は、上記塗料組成物を
塩化ビニル樹脂シートに塗布して硬化させた後、該硬化
塗膜を有する塩化ビニル樹脂シートを加圧下に加熱する
ものである。この基材となる樹脂シートを構成する樹脂
としては、塩化ビニル樹脂を用いる必要があり、この塩
化ビニル樹脂としては、特に限定されず、塩化ビニルの
単量重合体、または塩化ビニルと酢酸ビニル、エチレ
ン、プロピレン、等との共重合体を使用でき、これらは
単独でも2種以上の混合物でも使用できる。
In the production method of the present invention, the coating composition is applied to a vinyl chloride resin sheet and cured, and then the vinyl chloride resin sheet having the cured coating film is heated under pressure. It is necessary to use a vinyl chloride resin as a resin constituting the resin sheet serving as the base material, and the vinyl chloride resin is not particularly limited, and a monomer polymer of vinyl chloride, or vinyl chloride and vinyl acetate, Copolymers with ethylene, propylene and the like can be used, and these can be used alone or in a mixture of two or more.

【0022】また、塗料組成物を塗布する方法として
は、特に限定されるものではないが、例えばロールコー
ター法、スプレー法、グラビア印刷法、オフセット印刷
法などが挙げられる。
The method for applying the coating composition is not particularly limited, and examples thereof include a roll coater method, a spray method, a gravure printing method, and an offset printing method.

【0023】また、加圧下における加熱は、通常、熱盤
プレス、加熱ロールプレス等を用いて行われる。熱盤プ
レスの場合には通常鏡面板間で挟圧し、一方加熱ロール
プレスの場合には通常鏡面ロール間で挟圧する。
Heating under pressure is usually performed using a hot plate press, a heated roll press, or the like. In the case of a hot plate press, the pressing is usually performed between the mirror plates, while in the case of the heated roll press, the pressing is usually performed between the mirror rolls.

【0024】なお、上記鏡面板間で加圧加熱する際に、
同時に他の1ないし複数枚の基材樹脂シートを積層一体
化させる場合には、その加圧の圧力は、10kg/cm
2 以上とするのが好ましい。10kg/cm2 未満で
は、硬化塗膜を有する樹脂シートと、該基材樹脂シート
との積層性(密着性)が低下するので好ましくない。
When heating under pressure between the mirror plates,
When one or more other base resin sheets are laminated and integrated at the same time, the pressing pressure is 10 kg / cm.
It is preferably at least 2 . If it is less than 10 kg / cm 2 , the lamination property (adhesion) between the resin sheet having the cured coating film and the base resin sheet is undesirably reduced.

【0025】また、加熱の温度は130〜190℃とす
るのが好ましい。130℃未満では硬化塗膜の透明性が
低下するので好ましくないし、一方190℃を超えると
基材である塩化ビニル樹脂シートが軟化してシート厚さ
の均一性が低下するので好ましくない。
The heating temperature is preferably 130 to 190 ° C. If the temperature is lower than 130 ° C., it is not preferable because the transparency of the cured coating film is lowered. On the other hand, if the temperature is higher than 190 ° C., the vinyl chloride resin sheet as the base material is softened, and the uniformity of the sheet thickness is lowered.

【0026】この発明に係る製造方法で製造された導電
性樹脂シートは、帯電防止性が要求される電子部材や電
気部材、あるいは間仕切り、窓枠、壁材、床材などの建
築用部材として好適に使用できるが、使用形態は特に限
定されるものではない。
The conductive resin sheet manufactured by the manufacturing method according to the present invention is suitable as an electronic member or an electric member required to have antistatic properties, or as a building member such as a partition, a window frame, a wall material, a floor material and the like. Can be used, but the form of use is not particularly limited.

【0027】[0027]

【実施例】次に、この発明の具体的実施例について説明
する。
Next, specific embodiments of the present invention will be described.

【0028】<実施例1>平均粒径が0.2μmである
導電性酸化スズ10重量部と、平均重合度が900であ
る塩化ビニル樹脂15重量部と、メチルエチルケトンと
トルエンの混合溶媒(重量比で1:1混合)75重量部
とをサンドミルで混合し、塩化ビニル樹脂が溶媒に溶解
されるとともに、酸化スズが均一に分散された塗料組成
物を調製した。この塗料組成物を、グラビア印刷法によ
り厚さ0.5mmの塩化ビニル樹脂シート(2)の上に
1.0μm厚さに塗布した後、60℃の温度で1分間乾
燥して塗膜(3)を形成させ、中間物シート(4)を得
た。
Example 1 10 parts by weight of conductive tin oxide having an average particle diameter of 0.2 μm, 15 parts by weight of a vinyl chloride resin having an average degree of polymerization of 900, and a mixed solvent of methyl ethyl ketone and toluene (weight ratio) (1: 1 mixture) with a sand mill to prepare a coating composition in which the vinyl chloride resin was dissolved in the solvent and tin oxide was uniformly dispersed. The coating composition was applied to a 0.5 mm thick vinyl chloride resin sheet (2) to a thickness of 1.0 μm by gravure printing, and then dried at a temperature of 60 ° C. for 1 minute to form a coating film (3). ) Was formed to obtain an intermediate sheet (4).

【0029】次いで、図1に示すように、塗膜側を上に
して中間物シート(4)を上下一対の鏡面板(6)
(7)の間に配置し、この状態で、上下一対の熱盤
(8)(9)によって圧力30kg/cm2 、温度17
0℃で30分間挟圧した後、冷却し、一対の熱盤(8)
(9)を開いて導電性樹脂シートを取り出した。なお、
上部鏡面板(6)の下面にはクロムメッキが施されてい
る。
Then, as shown in FIG. 1, the intermediate sheet (4) is placed on a pair of mirror plates (6)
(7), and in this state, a pair of upper and lower hot plates (8) and (9) are used to apply a pressure of 30 kg / cm 2 and a temperature of 17 ° C.
After being squeezed at 0 ° C. for 30 minutes, it is cooled and a pair of hot plates (8)
(9) was opened and the conductive resin sheet was taken out. In addition,
The lower surface of the upper mirror plate (6) is plated with chrome.

【0030】<実施例2>塗料組成物の調製において、
平均重合度が900である塩化ビニル樹脂に代えて、平
均重合度が650である塩化ビニル樹脂を使用した以外
は、実施例1と同様にして塗料組成物を調製した。この
塗料組成物を、グラビア印刷法により厚さ0.5mmの
塩化ビニル樹脂シート(12)の上に1.0μm厚さに塗
布した後、60℃の温度で1分間乾燥して塗膜(13)を
形成させ、中間物シート(14)を得た。
Example 2 In preparing a coating composition,
A coating composition was prepared in the same manner as in Example 1, except that a vinyl chloride resin having an average polymerization degree of 650 was used instead of the vinyl chloride resin having an average polymerization degree of 900. The coating composition was applied to a 0.5 mm thick vinyl chloride resin sheet (12) to a thickness of 1.0 μm by a gravure printing method, and then dried at a temperature of 60 ° C. for 1 minute to form a coating film (13). ) Was formed to obtain an intermediate sheet (14).

【0031】次いで、図2に示すように、塗膜(13)側
を上にして中間物シート(14)を上下一対の鏡面板(1
6)(17)の間に配置し、更に中間物シート(14)と下
部鏡面板(17)との間に厚さ0.5mmの塩化ビニル樹
脂シート(12)を4枚配置した。なお、上部鏡面板(1
6)の下面にはクロムメッキが施されている。そして、
この状態で、上下一対の熱盤(18)(19)によって圧力
30kg/cm2 、温度170℃で30分間挟圧した
後、冷却し、一対の熱盤(18)(19)を開いて導電性樹
脂シートを取り出した。
Next, as shown in FIG. 2, the intermediate sheet (14) is placed on a pair of mirror plates (1) with the coating film (13) side up.
6) It was arranged between (17), and further four vinyl chloride resin sheets (12) having a thickness of 0.5 mm were arranged between the intermediate sheet (14) and the lower mirror plate (17). The upper mirror plate (1
6) The lower surface is chrome plated. And
In this state, after a pair of upper and lower hot plates (18) and (19) are squeezed at a pressure of 30 kg / cm 2 and a temperature of 170 ° C. for 30 minutes, they are cooled, and the pair of hot plates (18) and (19) are opened to conduct electricity. The conductive resin sheet was taken out.

【0032】<実施例3>塗料組成物の調製において、
平均重合度が650である塩化ビニル樹脂に代えて、平
均重合度が1150である塩化ビニル樹脂を使用した以
外は、実施例2と同様にして導電性樹脂シートを得た。
Example 3 In the preparation of a coating composition,
A conductive resin sheet was obtained in the same manner as in Example 2, except that a vinyl chloride resin having an average polymerization degree of 1150 was used instead of the vinyl chloride resin having an average polymerization degree of 650.

【0033】<実施例4>塗料組成物の調製において、
平均重合度が900である塩化ビニル樹脂に代えて、平
均重合度が800である塩化ビニル−酢酸ビニル共重合
体(酢酸ビニル含量10重量%)を使用した以外は、実
施例1と同様にして塗料組成物を調製した。この塗料組
成物を、グラビア印刷法により厚さ0.05mmの塩化
ビニル樹脂フィルム(22)の上に0.8μm厚さに塗布
した後、60℃の温度で1分間乾燥して塗膜(23)を形
成させ、次いで図3に示すように上下一対のヒータ(2
5)(26)間で加熱(温度170℃)した後、上下一対
の加圧ロール(27)(28)の間で挟圧(線圧50kg/
cm)して、導電性樹脂シート(1a)を得た。
Example 4 In preparing a coating composition,
In the same manner as in Example 1 except that a vinyl chloride-vinyl acetate copolymer having an average polymerization degree of 800 (vinyl acetate content of 10% by weight) was used instead of the vinyl chloride resin having an average polymerization degree of 900. A coating composition was prepared. This coating composition is applied to a 0.05 mm thick vinyl chloride resin film (22) to a thickness of 0.8 μm by a gravure printing method, and then dried at a temperature of 60 ° C. for 1 minute to form a coating film (23). ), And then a pair of upper and lower heaters (2) as shown in FIG.
5) After heating between (26) (temperature of 170 ° C.), nip pressure (linear pressure of 50 kg /
cm) to obtain a conductive resin sheet (1a).

【0034】<実施例5>塗料組成物の調製において、
平均重合度が900である塩化ビニル樹脂に代えて、平
均重合度が600である塩化ビニル−酢酸ビニル共重合
体(酢酸ビニル含量15重量%)を使用した以外は、実
施例1と同様にして塗料組成物を調製した。この塗料組
成物を、グラビア印刷法により厚さ0.05mmの塩化
ビニル樹脂フィルム(32)の上に0.8μm厚さに塗布
した後、60℃の温度で1分間乾燥して塗膜(33)を形
成させた後、ロール状に巻き取った。次いで、図4に示
すように、ロール(36)から引き出した塗膜付きフィル
ム(34)の非塗装面側に、押出装置(38)から押出した
直後の加熱状態の透明塩化ビニル樹脂シート(厚さ3m
m)(35)を重ね合わせて、鏡面ロール(37a )(37b
)(37c )の間に挿通挟圧(線圧60kg/cm)し
て、導電性樹脂シート(1b)を得た。
Example 5 In the preparation of a coating composition,
In the same manner as in Example 1 except that a vinyl chloride-vinyl acetate copolymer having an average polymerization degree of 600 (vinyl acetate content of 15% by weight) was used instead of the vinyl chloride resin having an average polymerization degree of 900. A coating composition was prepared. The coating composition was applied to a thickness of 0.8 μm on a 0.05 mm thick vinyl chloride resin film (32) by gravure printing, and then dried at a temperature of 60 ° C. for 1 minute to form a coating film (33). ) Was formed and wound up in a roll. Next, as shown in FIG. 4, the heated transparent polyvinyl chloride resin sheet (thickness) immediately after being extruded from the extruder (38) is placed on the uncoated surface side of the coated film (34) drawn from the roll (36). 3m
m) (35) is superimposed on the mirror roll (37a) (37b).
) And (37c), and a pinching pressure (linear pressure of 60 kg / cm) was obtained to obtain a conductive resin sheet (1b).

【0035】<比較例1>塗料組成物の調製において、
平均重合度が900である塩化ビニル樹脂に代えて、平
均重合度が400である塩化ビニル樹脂を使用した以外
は、実施例1と同様にして導電性樹脂シートを得た。
Comparative Example 1 In the preparation of a coating composition,
A conductive resin sheet was obtained in the same manner as in Example 1, except that a vinyl chloride resin having an average polymerization degree of 400 was used instead of the vinyl chloride resin having an average polymerization degree of 900.

【0036】<比較例2>塗料組成物の調製において、
平均重合度が900である塩化ビニル樹脂に代えて、平
均重合度が2500である塩化ビニル樹脂を使用した以
外は、実施例1と同様にして導電性樹脂シートを得た。
Comparative Example 2 In the preparation of the coating composition,
A conductive resin sheet was obtained in the same manner as in Example 1, except that a vinyl chloride resin having an average polymerization degree of 2500 was used instead of the vinyl chloride resin having an average polymerization degree of 900.

【0037】[0037]

【表1】 [Table 1]

【0038】[0038]

【表2】 [Table 2]

【0039】<試験方法および評価方法>上記のように
して作製された各シートに対し、下記試験法に従い、評
価を行うとともに、各シート取出後の鏡面板または鏡面
ロールへの塗膜の残着の有無を調べた。
<Test Method and Evaluation Method> Each sheet prepared as described above was evaluated according to the following test method, and the remaining coating film on the mirror plate or mirror roll after each sheet was taken out. Was examined.

【0040】A.表面抵抗値試験法 JIS K6911に準拠して測定した。A. Surface resistance value test method Measured according to JIS K6911.

【0041】B.全光線透過率測定法 JIS K6745に準拠して測定を行った。B. Total light transmittance measurement method The measurement was performed according to JIS K6745.

【0042】C.曇度試験法 JIS K6745に準拠して測定を行った。C. Haze test method The measurement was performed according to JIS K6745.

【0043】D.表面外観評価法 導電性樹脂シートの塗膜層の外観を下記判定基準に基づ
き判定した (判定基準) ○…表面が美麗な鏡面を呈している △…表面に僅かに凹凸が認められる ×…表面に顕著に凹凸が認められる
D. Surface Appearance Evaluation Method The appearance of the coating layer of the conductive resin sheet was judged based on the following judgment criteria (Judgment criteria) ○: The surface has a beautiful mirror surface △: Slight irregularities are observed on the surface ×: Surface Noticeably uneven

【0044】E.剥離性評価法(鏡面板または鏡面ロー
ルからの剥離性の評価) 導電性樹脂シート取出後の鏡面板または鏡面ロール表面
への塗膜の残着を調べ、下記判定基準により判定した (判定基準) ○…表面に塗膜が全く付着していない △…表面に塗膜がごく僅かに付着している ×…表面に塗膜が多数付着している
E. Peelability Evaluation Method (Evaluation of Peelability from Mirror Plate or Mirror Roll) The residual coating film on the mirror plate or mirror surface after taking out the conductive resin sheet was examined, and determined by the following criteria (criterion) …: No coating film adhered to the surface at all △: Very little coating film adhered to the surface ×: Many coating films adhered to the surface

【0045】表1から明らかなように、この発明の製造
方法で製作された実施例1〜5の導電性樹脂シートは、
鏡面板または鏡面ロールからの剥離性が良好であり塗膜
が残着することがなく、また帯電防止性、透明性にも優
れるとともに、表面品質にも優れている。
As is clear from Table 1, the conductive resin sheets of Examples 1 to 5 manufactured by the manufacturing method of the present invention are:
It has good releasability from a mirror plate or a mirror roll, does not leave a coating film, and has excellent antistatic properties and transparency, as well as excellent surface quality.

【0046】これに対し、この発明の範囲を逸脱する製
造方法で製作された比較例1、2の導電性樹脂シート
は、塗膜表面に凹凸があり表面品質に関して問題があ
る。また比較例1では、鏡面板に塗膜が残着している。
On the other hand, the conductive resin sheets of Comparative Examples 1 and 2 manufactured by a manufacturing method that deviates from the scope of the present invention have irregularities on the surface of the coating film and have a problem in surface quality. Further, in Comparative Example 1, the coating film remains on the mirror plate.

【0047】[0047]

【発明の効果】以上のように、この発明の製造方法は、
塗料組成物を塩化ビニル樹脂シートに塗布して硬化させ
た後、加圧下に加熱するものであるから、塗膜による良
好な帯電防止性を損なうことなく、塗膜の透明性を向上
させることができる。かつ導電性塗膜を形成する塗料組
成物を構成する樹脂として特定の重合度に規定された塩
化ビニル樹脂を用いているから、形成された塗膜が鏡面
板または鏡面ロールに残着することがなく、鏡面性に優
れた塗膜表面を確保することができる。また、残着した
塗膜を取り除く必要が全くないから、製造効率が向上す
る。更に、基材となる樹脂シートとして塩化ビニル樹脂
シートを選択し、かつ塗料組成物を構成する樹脂として
特定の重合度の塩化ビニル樹脂を用いているから、基材
シートと塗膜の密着性に優れた導電性樹脂シートを製造
することができる。
As described above, the production method of the present invention
Since the coating composition is applied to a vinyl chloride resin sheet and cured and then heated under pressure, the transparency of the coating film can be improved without impairing the good antistatic property of the coating film. it can. And since the vinyl chloride resin specified to a specific degree of polymerization is used as a resin constituting the coating composition for forming the conductive coating film, the formed coating film may remain on the mirror plate or the mirror roll. In addition, it is possible to secure a coating film surface having excellent mirror finish. In addition, since there is no need to remove the remaining coating film, the production efficiency is improved. Furthermore, since a vinyl chloride resin sheet is selected as a resin sheet serving as a base material, and a vinyl chloride resin having a specific polymerization degree is used as a resin constituting the coating composition, the adhesion between the base sheet and the coating film is improved. An excellent conductive resin sheet can be manufactured.

【0048】請求項2、3の発明によれば、塗膜の残着
を確実に防止することができる。
According to the second and third aspects of the present invention, it is possible to reliably prevent the remaining of the coating film.

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

【図1】実施例1における製造方法の概略を示す断面図
である。
FIG. 1 is a cross-sectional view schematically illustrating a manufacturing method according to a first embodiment.

【図2】実施例2、3における製造方法の概略を示す断
面図である。
FIG. 2 is a cross-sectional view schematically illustrating a manufacturing method in Examples 2 and 3.

【図3】実施例4における製造方法の概略を示す側面図
である。
FIG. 3 is a side view schematically illustrating a manufacturing method according to a fourth embodiment.

【図4】実施例5における製造方法の概略を示す側面図
である。
FIG. 4 is a side view schematically illustrating a manufacturing method according to a fifth embodiment.

【符号の説明】[Explanation of symbols]

1a、1b…導電性樹脂シート 2、12、22、32…樹脂シート(フィルム) 3、13、23、33…塗膜 1a, 1b: conductive resin sheet 2, 12, 22, 32: resin sheet (film) 3, 13, 23, 33: coating film

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 平均重合度が600〜1200である塩
化ビニル樹脂と、導電性粉末と、有機溶媒とからなる塗
料組成物を塩化ビニル樹脂シートに塗布して硬化させた
後、該硬化塗膜を有する塩化ビニル樹脂シートを加圧下
に加熱することを特徴とする導電性樹脂シートの製造方
法。
1. A coating composition comprising a vinyl chloride resin having an average degree of polymerization of 600 to 1200, a conductive powder, and an organic solvent is applied to a vinyl chloride resin sheet, cured, and then cured. A method for producing a conductive resin sheet, comprising heating a vinyl chloride resin sheet having a pressure under pressure.
【請求項2】 前記塩化ビニル樹脂が塩化ビニルの単量
重合体である請求項1に記載の導電性樹脂シートの製造
方法。
2. The method for producing a conductive resin sheet according to claim 1, wherein the vinyl chloride resin is a monomeric polymer of vinyl chloride.
【請求項3】 前記塩化ビニル樹脂が塩化ビニル−酢酸
ビニル共重合体からなり、かつ該共重合体における酢酸
ビニル含量が15重量%以下である請求項1に記載の導
電性樹脂シートの製造方法。
3. The method for producing a conductive resin sheet according to claim 1, wherein the vinyl chloride resin comprises a vinyl chloride-vinyl acetate copolymer, and the vinyl acetate content in the copolymer is 15% by weight or less. .
JP36081997A 1997-12-26 1997-12-26 Manufacture of conductive resin sheet Pending JPH11191328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP36081997A JPH11191328A (en) 1997-12-26 1997-12-26 Manufacture of conductive resin sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP36081997A JPH11191328A (en) 1997-12-26 1997-12-26 Manufacture of conductive resin sheet

Publications (1)

Publication Number Publication Date
JPH11191328A true JPH11191328A (en) 1999-07-13

Family

ID=18471061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP36081997A Pending JPH11191328A (en) 1997-12-26 1997-12-26 Manufacture of conductive resin sheet

Country Status (1)

Country Link
JP (1) JPH11191328A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002370321A (en) * 2001-06-15 2002-12-24 Kimoto & Co Ltd Heat contact-bonding conductive film, conductive synthetic resin material using the film, and molded product of conductive synthetic resin
JP2003151356A (en) * 2001-11-16 2003-05-23 Bridgestone Corp Transparent conductive film and touch panel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002370321A (en) * 2001-06-15 2002-12-24 Kimoto & Co Ltd Heat contact-bonding conductive film, conductive synthetic resin material using the film, and molded product of conductive synthetic resin
JP2003151356A (en) * 2001-11-16 2003-05-23 Bridgestone Corp Transparent conductive film and touch panel

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