JP2005144858A - Method for producing transparent conductive film - Google Patents

Method for producing transparent conductive film Download PDF

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JP2005144858A
JP2005144858A JP2003385447A JP2003385447A JP2005144858A JP 2005144858 A JP2005144858 A JP 2005144858A JP 2003385447 A JP2003385447 A JP 2003385447A JP 2003385447 A JP2003385447 A JP 2003385447A JP 2005144858 A JP2005144858 A JP 2005144858A
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film
adhesive layer
transparent conductive
spacer
layer
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JP2005144858A5 (en
Inventor
Takehiko Ando
豪彦 安藤
Hideo Sugawara
英男 菅原
Masao Higami
正雄 火神
Tomoisa Noguchi
知功 野口
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Nitto Denko Corp
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Nitto Denko Corp
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Priority to JP2003385447A priority Critical patent/JP2005144858A/en
Priority to TW093133996A priority patent/TW200516502A/en
Priority to KR1020040092019A priority patent/KR100626128B1/en
Priority to CNB2004100946946A priority patent/CN1310124C/en
Publication of JP2005144858A publication Critical patent/JP2005144858A/en
Publication of JP2005144858A5 publication Critical patent/JP2005144858A5/ja
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H39/00—Associating, collating, or gathering articles or webs
    • B65H39/16—Associating two or more webs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a transparent conductive film for a touch panel which suppresses unevenness by hit marks and prevents a deterioration in display quality caused by the occurrence of the defect, distortion, etc., of an image. <P>SOLUTION: In the method for producing the transparent conductive film 70, a first film 16 having a hard coat layer and/or an anti-glare layer and a second film 62 having a transparent conductive film are laminated through an adhesive layer 44. The method includes a process in which while a spacer is supplied to both end parts between the second surface of the separator 10 of a first film 18 with an adhesive layer and the first film 16, it is wound onto a core to make the roll body of the first film with the adhesive layer and a lamination process in which the separator 10 is removed while being rewound from the roll body of the first film 18 with the adhesive layer, and the second film 62 is supplied from the roll body wound onto the core through the spacer to both end parts and bonded. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、ハードコート層及び／又はアンチグレア層を有する透明導電性フィルムの製造方法に関し、具体的にはアナログ方式タッチパネルの電極板などに好適な透明導電性フィルムロールの製造方法に関するものである。   The present invention relates to a method for producing a transparent conductive film having a hard coat layer and / or an antiglare layer, and specifically to a method for producing a transparent conductive film roll suitable for an electrode plate of an analog touch panel.

液晶ディスプレー等には、膜抵抗式のタッチパネルが多く使用されており、かかるタッチパネルに使用する透明導電性フィルムとしては、第１透明基材の第１面にハードコート層を形成したハードコート処理フィルムと、第２透明基材の第１面に透明導電膜を有する導電フィルムとをそれぞれのフィルムの第２面どうしを対向させて粘着剤にて積層した透明導電性フィルムが公知である（特許文献１参照）。   Many liquid crystal display touch panels are used for liquid crystal displays and the like. As a transparent conductive film used for such a touch panel, a hard coat treatment film having a hard coat layer formed on the first surface of a first transparent substrate is used. And a transparent conductive film in which a conductive film having a transparent conductive film on the first surface of a second transparent substrate is laminated with an adhesive with the second surfaces of the respective films facing each other is known (Patent Document). 1).

係る透明導電性フィルムは、ハードコート処理フィルム又は導電フィルムの一方の表面に接着剤層を形成し、他のフィルムと接着・積層することにより連続状にて製造され、一旦ロール体として巻き取られ、保存される。そして、ロール体として巻き取られた連続状の透明導電性フィルムは、ロール状態から巻き戻しつつ所定のサイズに裁断し、使用に供される。   Such a transparent conductive film is produced in a continuous state by forming an adhesive layer on one surface of a hard coat treatment film or a conductive film, and adhering and laminating with another film, and is once wound up as a roll body. Saved. And the continuous transparent conductive film wound up as a roll body is cut | judged to a predetermined size, unwinding from a roll state, and is used.

このような透明導電性フィルムの製造方法における接着剤層を形成する工程は、通常、セパレーターに接着剤層を形成し、接着剤層を形成すべき一方のフィルムを接着することにより行われる。接着剤層を形成されたフィルムは一旦ロール体として巻き取られる。接着剤層を形成されたフィルムは、別途製造され、同様にロール体として巻き取られた他のフィルムと、積層工程においてそれぞれのロール体から巻き戻して供給しつつ接着・積層して透明導電性フィルムが製造される。
特開２００２−７３２８２号公報（特許請求の範囲） The step of forming an adhesive layer in such a method for producing a transparent conductive film is usually performed by forming an adhesive layer on a separator and adhering one film on which the adhesive layer is to be formed. The film on which the adhesive layer has been formed is once wound up as a roll body. The film with the adhesive layer is manufactured separately, and the other film wound in the same way as a roll body is adhered and laminated while being unwound and supplied from each roll body in the laminating process. A film is produced.
JP 2002-73282 A (Claims)

しかるに、上記した従来の透明導電性フィルムの製造工程において、積層前のハードコート処理フィルム、導電フィルムの少なくとも一方の表面に打痕による凹凸があると、積層後の透明導電性フィルムに気泡や歪みが発生しやすくなる。特に液晶ディスプレーは、年々画像精度が向上しており、それに伴って従来の液晶ディスプレーでは問題とならなかった透明導電性フィルムの小さな気泡や歪みが画像不良の原因となるため、より一層、透明導電性フィルムの小さな気泡や歪みの発生防止が求められている。   However, in the manufacturing process of the conventional transparent conductive film described above, if there are irregularities due to dents on the surface of the hard coat treated film before lamination and the conductive film, bubbles and distortion are formed in the laminated transparent conductive film. Is likely to occur. In particular, liquid crystal displays have improved image accuracy year by year, and as a result, small bubbles and distortion in transparent conductive films that have not been a problem with conventional liquid crystal displays can cause image defects. There is a need to prevent the generation of small bubbles and distortion in the conductive film.

本発明は、上記の問題点に鑑みてなされたものであり、その目的は打痕による凹凸を抑え、ディスプレーとした場合に画像の欠陥や歪み等が生じて表示品位を低下させることのない透明導電性フィルムの製造方法を提供することにある。   The present invention has been made in view of the above-described problems, and its purpose is to suppress irregularities due to dents and to prevent a display from deteriorating display quality due to image defects or distortion when used as a display. It is providing the manufacturing method of an electroconductive film.

本願第１発明は、第１基材の第１面にハードコート層及び／又はアンチグレア層を有する第１フィルムと第２基材の第１面に透明導電膜を有する第２フィルムとが接着剤層を介して積層された透明導電性フィルムの製造方法であって、
第１フィルムに接着剤層を形成して接着剤層付き第１フィルムのロール体とする接着剤層付き第１フィルム製造工程、及び前記接着剤層付き第１フィルムと前記第２フィルムとを接着、積層して透明導電性フィルムとする積層工程とを有し、
接着剤層付き前記第１フィルム製造工程は、
セパレーターの第１面に接着剤層を形成する接着剤シート形成工程、
前記接着剤シートの接着剤層に前記第１フィルムを供給して接着する接着剤層付き第１フィルム形成工程、
及び前記接着剤層付き第１フィルムの前記セパレーターの第２面と第１フィルムとの間の両端部にスペーサーを供給しながら巻芯に巻き重ねて接着剤層付き第１フィルムのロール体とする巻き取り工程を有するものであり、
前記第２フィルムは、両端部にスペーサーを供給して巻芯に巻き重ねられた第２フィルムのロール体であり、
前記積層工程は、前記接着剤層付き第１フィルムをロール体から巻き戻すと共にスペーサーとセパレーターとを除去する接着剤層付き第１フィルム供給工程、前記第２フィルムをロール体から巻き戻すと共にスペーサーを除去する第２フィルム供給工程、及び前記接着剤層付き第１フィルムと第２フィルムとを接着剤層を介して積層する接着工程を有するものであることを特徴とする。 In the first invention of the present application, the first film having the hard coat layer and / or the antiglare layer on the first surface of the first substrate and the second film having the transparent conductive film on the first surface of the second substrate are adhesives. A method for producing a transparent conductive film laminated through layers,
Forming the first film with an adhesive layer by forming an adhesive layer on the first film, and bonding the first film with the adhesive layer and the second film as a roll body of the first film with the adhesive layer And a laminating step for laminating to form a transparent conductive film,
The first film manufacturing process with the adhesive layer is as follows:
An adhesive sheet forming step of forming an adhesive layer on the first surface of the separator;
A first film forming step with an adhesive layer for supplying and bonding the first film to the adhesive layer of the adhesive sheet;
And while supplying a spacer to the both ends between the second surface of the separator and the first film of the first film with the adhesive layer, the roll body of the first film with the adhesive layer is wound around the core. It has a winding process,
The second film is a roll of a second film that is wound around a core by supplying spacers at both ends,
In the laminating step, the first film with the adhesive layer is rewound from the roll body and the first film supply step with the adhesive layer for removing the spacer and the separator, and the second film is rewound from the roll body and the spacer is removed. It has a 2nd film supply process to remove, and the adhesion process which laminates | stacks the said 1st film with an adhesive bond layer and a 2nd film through an adhesive bond layer, It is characterized by the above-mentioned.

本願第２発明は、第１基材の第１面にハードコート層及び／又はアンチグレア層を有する第１フィルムと第２基材の第１面に透明導電膜を有する第２フィルムとが接着剤層を介して積層された透明導電性フィルムの製造方法であって、
第２フィルムに接着剤層を形成して接着剤層付き第２フィルムのロール体とする接着剤層付き第２フィルム製造工程、及び前記接着剤層付き第２フィルムと前記第１フィルムとを接着、積層して透明導電性フィルムとする積層工程とを有し、
前記接着剤層付き第２フィルム製造工程は、
セパレーターの第１面に接着剤層を形成する接着剤シート形成工程、
前記接着剤シートの接着剤層に前記第２フィルムを供給して接着する接着剤層付き第２フィルム形成工程、
及び前記接着剤層付き第２フィルムの前記セパレーターの第２面と第２フィルムとの間の両端部にスペーサーを供給しながら巻芯に巻き重ねて接着剤層付き第２フィルムのロール体とする巻き取り工程を有するものであり、
前記第１フィルムは、両端部にスペーサーを供給して巻芯に巻き重ねられた第１フィルムのロール体であり、
前記積層工程は、前記接着剤層付き第２フィルムをロール体から巻き戻すと共にスペーサーとセパレーターとを除去する接着剤層付き第２フィルム供給工程、前記第１フィルムをロール体から巻き戻すと共にスペーサーを除去する第１フィルム供給工程、及び前記接着剤層付き第２フィルムと第１フィルムとを接着剤層を介して積層する接着工程を有するものであることを特徴とする。 In the second invention of the present application, the first film having the hard coat layer and / or the antiglare layer on the first surface of the first substrate and the second film having the transparent conductive film on the first surface of the second substrate are adhesives. A method for producing a transparent conductive film laminated through layers,
Forming the second film with an adhesive layer to form a second film with an adhesive layer by forming an adhesive layer on the second film, and bonding the second film with the adhesive layer and the first film together And a laminating step for laminating to form a transparent conductive film,
The second film manufacturing process with the adhesive layer,
An adhesive sheet forming step of forming an adhesive layer on the first surface of the separator;
A second film forming step with an adhesive layer for supplying and bonding the second film to the adhesive layer of the adhesive sheet;
And while supplying a spacer to the both ends between the second surface of the separator and the second film of the second film with the adhesive layer, the roll film of the second film with the adhesive layer is wound around the core. It has a winding process,
The first film is a roll of a first film that is wound around a core by supplying spacers at both ends.
In the laminating step, the second film with the adhesive layer is rewound from the roll body and the second film supply step with the adhesive layer for removing the spacer and the separator, and the first film is rewound from the roll body and the spacer is removed. It has a 1st film supply process to remove, and the adhesion process which laminates | stacks the said 2nd film with an adhesive bond layer and a 1st film through an adhesive bond layer, It is characterized by the above-mentioned.

上記第１発明、第２発明のいずれにおいても、積層すべき第１フィルム、第２フィルムのいずれもがスペーサーを介して巻き取ってロール体として積層工程に供されている。スペーサーは巻き取ったフィルムが密着するのを防止するための機能を有し、しかも該スペーサーによって、ロール体として巻き重ねて保存した状態におけるフィルムにかかる圧力を下げることができるため、異物がフィルムの最外面、例えばハードコート層上やアンチグレア層ないし透明導電層上に付着した場合においても、打痕による凹凸が生じにくくなる。   In both the first invention and the second invention, both the first film and the second film to be laminated are wound up via a spacer and used for a laminating process as a roll body. The spacer has a function to prevent the wound film from adhering, and the spacer can reduce the pressure applied to the film in a state of being wound and stored as a roll body, so that the foreign matter can be removed from the film. Even when it adheres to the outermost surface, for example, the hard coat layer, the antiglare layer, or the transparent conductive layer, unevenness due to dents is less likely to occur.

特に接着剤層付き第１フィルム又は接着剤層付き第２フィルムは、接着剤層を有しないフィルムと比較すると、異物が付着・混入した場合には、フィルムを巻き重ねた時に生じる圧力によって接着剤層に塑性変形が生じて回復しないので打痕をより生じやすいが、スペーサーを介して巻き取ることにより、接着剤層にかかる圧力は小さくなって打痕が生じにくくなる。   In particular, the first film with the adhesive layer or the second film with the adhesive layer is more adhesive than the film without the adhesive layer, because of the pressure generated when the films are rolled up when foreign matter adheres and enters. Since the plastic deformation occurs in the layer and does not recover, a dent is more likely to be generated. However, by winding through the spacer, the pressure applied to the adhesive layer is reduced and the dent is hardly generated.

また、アンチグレア層は、例えば透明粒子を混入させることによって表面に凹凸を形成したものであるが、係る構成によってアンチグレア層を有する第１フィルムないし接着剤層付き第１フィルムを巻き取って放置すると、異物混入の場合と同様に打痕を生じやすいが、スペーサーを介して巻き重ねることにより打痕発生が効果的に抑制される。   In addition, the antiglare layer is formed with irregularities on the surface by mixing transparent particles, for example, but when the first film having the antiglare layer or the first film with an adhesive layer is wound and left by such a configuration, Although it is easy to produce a dent similarly to the case where foreign matter is mixed, the occurrence of a dent is effectively suppressed by winding it through a spacer.

積層工程を経て製造された製品である透明導電性フィルムを芯体に巻き取ってロール体とする場合にも、スペーサーを介して巻き取ることは好適な態様である。   Even when the transparent conductive film, which is a product manufactured through the laminating process, is wound around a core body to form a roll body, it is a preferable aspect to wind it up via a spacer.

また、第１発明における第１フィルム、第２発明における第２フィルムは、いずれもロール体として接着剤層付き第１フィルムないし接着剤層付き第２フィルム製造工程に供給されるものであるが、係るロール体もスペーサーを介して巻き取ったものであることが好ましい。   Moreover, although the 1st film in 1st invention and the 2nd film in 2nd invention are both supplied to the 1st film with an adhesive layer thru | or a 2nd film with an adhesive layer as a roll body, It is preferable that the roll body is also wound through a spacer.

上述の導電性フィルムの製造方法においては、前記スペーサーは、片面に接着剤層を有するものであり、前記巻き取り工程においては、前記スペーサーの接着剤層形成面を前記セパレーターに接触させるように供給することが好ましい。   In the above-described method for producing a conductive film, the spacer has an adhesive layer on one side, and in the winding process, the spacer is supplied so that the adhesive layer forming surface of the spacer is in contact with the separator. It is preferable to do.

接着剤層を有するスペーサーを使用することにより、両端部にスペーサーを供給しながらフィルムを巻芯に巻き重ねる際に横ずれが生じてスペーサーが外れてしまうという問題やスペーサーが潰れた状態で巻き重ねられるという問題の発生が防止され、安定したフィルムの走行性と工程上の操作性が得られる。またスペーサーを所定通りに巻き重ねたロールの移動時にスペーサーにずれが生じ、さらには外れるという問題の発生も防止可能となる。   By using a spacer with an adhesive layer, the film is rolled up in a state where the spacer is crushed or the spacer is removed when the film is wound around the core while supplying the spacer to both ends. Occurrence of the problem is prevented, and stable film running and process operability can be obtained. Further, it is possible to prevent the occurrence of a problem that the spacer is displaced during the movement of the roll in which the spacers are wound in a predetermined manner and further detached.

本発明により得られる前記透明導電性フィルムは、前記第１フィルムと第２フィルムとが、第１基材の第２面と第２基材の第２面とが接着剤層を介して接着して積層されたものであることが好ましい。   In the transparent conductive film obtained by the present invention, the first film and the second film are bonded to the second surface of the first substrate and the second surface of the second substrate through an adhesive layer. It is preferable that they are laminated.

係る構成により、光学的特性が優れた透明導電性フィルムを得ることができる。   With this configuration, a transparent conductive film having excellent optical characteristics can be obtained.

この場合、第１フィルムを構成する第１基材の第２面及び第２フィルムを構成する第２基材の第２面は、いずれも無処理層であってもよいが、少なくとも一方にオリゴマー防止層が形成されていることが好ましい。オリゴマー防止層は、第１基材ないし第２基材に含まれるオリゴマーが接着剤層に移行して透明導電性フィルムが外観不良となることを防止する作用を有する。オリゴマー防止層は、第１基材と第２基材のそれぞれの第２面に形成されていることがより好ましい。   In this case, the second surface of the first base material constituting the first film and the second surface of the second base material constituting the second film may both be untreated layers, but at least one of them is an oligomer. A prevention layer is preferably formed. The oligomer prevention layer has an action of preventing the oligomer contained in the first base material or the second base material from moving to the adhesive layer and causing the transparent conductive film to have a poor appearance. The oligomer prevention layer is more preferably formed on each second surface of the first base material and the second base material.

本発明においては、前記スペーサーが、熱可塑性樹脂フィルムよりなることが低コストであり、好ましい。   In the present invention, the spacer is preferably made of a thermoplastic resin film because of low cost.

上記発明においては、前記スペーサーの幅が、５ｍｍ〜１００ｍｍであることが好ましい。   In the said invention, it is preferable that the width | variety of the said spacer is 5-100 mm.

スペーサーの幅が５ｍｍよりも小さい場合は、第１フィルムないし第２フィルムのロール体において、それぞれのフィルムにかかる圧力を十分低減することができないため、打痕が生じやすくなる。またフィルムの幅が１００ｍｍよりも大きい場合は、フィルムを、ロール体から巻き戻して引き伸ばした時に、スペーサーの跡がつき、外観不良となるフィルム面積が大きくなるために有効製品面積が小さくなり、好ましくない。   When the width of the spacer is smaller than 5 mm, in the roll body of the first film or the second film, the pressure applied to each film cannot be sufficiently reduced, so that a dent is easily generated. Also, when the film width is larger than 100 mm, when the film is unwound from the roll body and stretched, the trace of the spacer is attached, and the effective product area becomes smaller because the film area that causes poor appearance is increased, preferably Absent.

本発明の透明導電性フィルムの製造方法によれば、打痕数が従来よりも抑制され、ディスプレーとした場合に画像の欠陥や歪み等が生じて表示品位を低下させることのない透明導電性フィルムロールを製造することができるという利点がある。   According to the method for producing a transparent conductive film of the present invention, the number of dents is suppressed as compared with the conventional method, and when it is used as a display, the transparent conductive film does not cause display defects such as image defects or distortion. There is an advantage that a roll can be manufactured.

本発明において使用するスペーサーの材質に関しては特に限定はないが、ロール体として放置したときに、フィルムの透明導電膜、アンチグレア層等と粘着や接着を生じないことが必要である。具体的にはポリエチレンテレフタレート等のポリエステル、ポリアミド、ポリ塩化ビニル、ポリスチレン、ポリエチレン、ポリプロピレン等の硬質の熱可塑性樹脂、上質の和紙、不織布、ウレタン発泡シート、ポリエチレン発泡体シート等のクッション性に優れた材料を例示できる。クッション性に優れた材料をスペーサーとして使用すると、スペーサーの端部において筋状の打痕が生じないため、得られる透明導電性フィルムの有効領域を広くすることができるので、より好ましい。   The material of the spacer used in the present invention is not particularly limited, but it is necessary that it does not cause sticking or adhesion with the transparent conductive film, antiglare layer, etc. of the film when left as a roll body. Specifically, it has excellent cushioning properties such as polyester such as polyethylene terephthalate, polyamide, polyvinyl chloride, polystyrene, polyethylene, polypropylene, hard thermoplastic resin, high quality Japanese paper, nonwoven fabric, urethane foam sheet, polyethylene foam sheet, etc. Materials can be exemplified. It is more preferable to use a material having excellent cushioning properties as the spacer, since no streak is formed at the end of the spacer, and the effective area of the transparent conductive film to be obtained can be widened.

本発明の好適な実施の形態を図面に基づいて説明する。以下の例では、ハードコート層を有する第１フィルムに接着剤層を設けて第２フィルムと積層する第１発明の例を示したが、第２フィルムに接着剤層を形成して第１フィルムと積層する第２発明も同様の方法にて実施することが可能である。   A preferred embodiment of the present invention will be described with reference to the drawings. In the following example, an example of the first invention in which an adhesive layer is provided on a first film having a hard coat layer and laminated with the second film is shown. However, the first film is formed by forming an adhesive layer on the second film. The second invention of laminating can be carried out in the same manner.

図１は、第１フィルムに接着剤層を形成して巻き取る接着剤層付き第１フィルム製造工程を例示したモデル図である。   FIG. 1 is a model diagram illustrating a first film manufacturing process with an adhesive layer formed and wound on a first film.

セパレーター１０はロール体２０から巻き戻されてその第１面（上面）にドクターブレード３６にて接着剤３４を塗布し、オーブン３８にて乾燥して接着剤層を有するセパレーター１７が形成される。第１フィルム１６はロール体２２から巻き戻して供給され、第１圧着ロール３０により接着剤層を有するセパレーター１７と圧着された後に、接着剤層を有するスペーサー２４をセパレーターの第２面（下面）の両端部に供給し、第２圧着ロール３２にて接着して両端部にスペーサーを有する接着剤層付き第１フィルム１２として芯体に巻き取り、ロール体２６とする。第１フィルムの幅方向中央部では、スペーサー２４が存在せず、ロール体２６として巻き重ねた際に空隙ないしフィルム間に圧力がかからない部分が形成される。   The separator 10 is rewound from the roll body 20, and an adhesive 34 is applied to the first surface (upper surface) with a doctor blade 36 and dried in an oven 38 to form the separator 17 having an adhesive layer. The first film 16 is supplied after being unwound from the roll body 22, and after the first pressure roll 30 is pressure-bonded to the separator 17 having the adhesive layer, the spacer 24 having the adhesive layer is attached to the second surface (lower surface) of the separator. The first film 12 with the adhesive layer having the spacers at both ends and wound up around the core body to form a roll body 26. In the central portion in the width direction of the first film, the spacer 24 does not exist, and a portion where no pressure is applied between the gap or the film when the roll body 26 is wound is formed.

両端部にスペーサーを有する接着剤層付き第１フィルム１２の構造を図２に例示した。図２（ａ）は斜視図であり、接着剤層付き第１フィルム１２の両端部にスペーサー１４が接着されている。図２（ｂ）は図２（ａ）のＡ−Ａ断面を示した断面図である。第１基材４２の第１面にハードコート層又はアンチグレア層４０が形成された第１フィルム１６の第１基材４２の第２面に接着剤層４４が形成されたセパレーター１０が積層されている。セパレーター１０の第２面（下面）にスペーサー１４が接着されている。スペーサー１４とセパレーター１０の間の接着剤層は図示していない。   The structure of the 1st film 12 with an adhesive layer which has a spacer in both ends was illustrated in FIG. Fig.2 (a) is a perspective view, and the spacer 14 is adhere | attached on the both ends of the 1st film 12 with an adhesive bond layer. FIG. 2B is a cross-sectional view showing the AA cross section of FIG. The separator 10 having the adhesive layer 44 formed on the second surface of the first substrate 42 of the first film 16 having the hard coat layer or the antiglare layer 40 formed on the first surface of the first substrate 42 is laminated. Yes. A spacer 14 is bonded to the second surface (lower surface) of the separator 10. The adhesive layer between the spacer 14 and the separator 10 is not shown.

図３は図１に例示された方法で製造された接着剤層付き第１フィルム１２を使用して透明導電性フィルムを製造する積層工程を例示したモデル図である。   FIG. 3 is a model diagram illustrating a laminating process for manufacturing a transparent conductive film using the first film 12 with an adhesive layer manufactured by the method illustrated in FIG. 1.

図１に例示した工程で製造されたロール体２６から巻き戻された接着剤層付き第１フィルム１２は、スペーサー１４とセパレーター１０とが同時に剥離されてロール体７２として巻き取られると共に第１フィルムは第３圧着ロール６８に供給される（接着剤層付き第１フィルム供給工程）。第２フィルム６２は、スペーサー６４を分離してロール体６６として巻き取りつつロール体６０から巻き戻して供給され（第２フィルム供給工程）、セパレーター１０の剥離により接着剤層が露出した接着剤層付き第１フィルムと第３圧着ロール６８にて圧着して積層されて透明導電性フィルム７０が形成される（接着工程）。得られた透明導電性フィルム７０には接着剤層を有するスペーサー７６を両端部に供給し第４圧着ロール６９にて接着した後に芯体にロール体８２として巻き取る。   The first film 12 with the adhesive layer unwound from the roll body 26 manufactured in the process illustrated in FIG. 1 is wound as the roll body 72 while the spacer 14 and the separator 10 are peeled off at the same time. Is supplied to the third press-bonding roll 68 (first film supplying step with an adhesive layer). The second film 62 is supplied after being unwound from the roll body 60 while being wound up as the roll body 66 by separating the spacer 64 (second film supply step), and the adhesive layer exposed by peeling of the separator 10. The attached first film and the third pressure roll 68 are pressure-bonded and laminated to form the transparent conductive film 70 (adhesion step). The obtained transparent conductive film 70 is supplied with spacers 76 having an adhesive layer at both ends and bonded by a fourth pressure-bonding roll 69, and then wound around the core as a roll body 82.

図５には、透明導電性フィルム７０を、その幅方向両端部にスペーサーを供給しながら第４圧着ロール６９にて接着し、スペーサー付き透明導電性フィルム８０とするスペーサー接着工程を斜視図にて示した。スペーサー７６は、第４圧着ロールを使用することなく、巻き取り時に直接ロール体に供給して巻き重ねてもよい。   FIG. 5 is a perspective view of a spacer bonding process in which a transparent conductive film 70 is bonded by a fourth pressure roll 69 while supplying spacers to both ends in the width direction to form a transparent conductive film 80 with a spacer. Indicated. The spacer 76 may be supplied directly to the roll body and wound up without being used in the fourth pressure-bonding roll.

図４はスペーサー付き透明導電性フィルム８０のＢ−Ｂ断面を示した断面図である。透明導電性フィルム７０は、第１基材４２の第１面に形成されたハードコート層４０を有する第１フィルム１６と、第２基材５０の第１面に透明導電層５２が形成された第２フィルム（導電フィルム）６２とが、第１基材４２、第２基材５０の第２面同士を接着剤層４４にて接着、積層された構造を有している。スペーサー付き透明導電性フィルム８０のＢ−Ｂ断面においては、スペーサー７６が接着剤層７７を介して積層されている。透明導電性フィルムの幅方向中央部では、スペーサー７６が存在せず、ロール体８２として巻き重ねた際に空隙ないしフィルム間に圧力がかからない部分が形成される。   FIG. 4 is a cross-sectional view showing a BB cross section of the transparent conductive film 80 with a spacer. The transparent conductive film 70 includes the first film 16 having the hard coat layer 40 formed on the first surface of the first substrate 42 and the transparent conductive layer 52 formed on the first surface of the second substrate 50. The second film (conductive film) 62 has a structure in which the second surfaces of the first base material 42 and the second base material 50 are bonded and laminated by the adhesive layer 44. In the BB cross section of the transparent conductive film 80 with a spacer, a spacer 76 is laminated via an adhesive layer 77. In the central portion in the width direction of the transparent conductive film, the spacer 76 does not exist, and a portion where no pressure is applied between the gap or the film when the roll body 82 is wound is formed.

本発明の第１フィルム、接着剤層付き第１フィルム、第２フィルム、接着剤層付き第２フィルム、透明導電性フィルムのセパレーターの供給における「両端部」とは、左右のスペーサーの端部が各フィルムの端部と一致している必要はなく、ほぼ端部に位置していればよい意味である。また左右のスペーサーは同じ幅である必要もない。第１フィルム、接着剤層付き第１フィルム、第２フィルム、接着剤層付き第２フィルム、透明導電性フィルムに使用するセパレーターは同じものであってもよく、それぞれ異なったものであってもよい。   In the supply of the first film, the first film with the adhesive layer, the second film, the second film with the adhesive layer, and the separator of the transparent conductive film of the present invention, the “both ends” means the ends of the left and right spacers. It does not have to coincide with the end of each film, and it means that the film should be positioned almost at the end. Also, the left and right spacers need not have the same width. The separator used for the first film, the first film with the adhesive layer, the second film, the second film with the adhesive layer, and the transparent conductive film may be the same or different. .

導電性フィルムロールの巻き取り幅は、特に限定されるものではないが、通常３００ｍｍ〜２０００ｍｍである。   The winding width of the conductive film roll is not particularly limited, but is usually 300 mm to 2000 mm.

透明導電性フィルム７０の構成は、図４に例示したものに限定されるものではないが、片面は、透明導電層である。   Although the structure of the transparent conductive film 70 is not limited to what was illustrated in FIG. 4, one side is a transparent conductive layer.

第１フィルム１６の表面は、第１基材４２の第１面にはハードコート層４０に代えてアンチグレア層が形成されていてもよく、ハードコート層とアンチグレア層の２層が形成されていてもよい。第１フィルム１６とハードコート層４０との間もしくは第１フィルム１６とアンチグレア層の間には、別の機能層が設けられていてもよい。係る機能層としては、ＳｉＯ2 、ＴｉＯ2 等にて形成される反射防止層、透明誘電体層が例示される。機能層は、複数層にて構成されていてもよい。 The surface of the first film 16 may have an antiglare layer formed on the first surface of the first base material 42 instead of the hardcoat layer 40, and two layers of a hardcoat layer and an antiglare layer are formed. Also good. Another functional layer may be provided between the first film 16 and the hard coat layer 40 or between the first film 16 and the antiglare layer. Examples of such a functional layer include an antireflection layer and a transparent dielectric layer formed of SiO 2 , TiO 2 or the like. The functional layer may be composed of a plurality of layers.

また、第２フィルム（導電フィルム）６２は、例えば第２基材５０と透明導電層５２との間に少なくとも１層の機能層が設けられたものであってもよい。係る機能層としては、上記第１フィルムと同様にＳｉＯ2 、ＴｉＯ2 等にて形成される反射防止層、透明誘電体層が例示される。 The second film (conductive film) 62 may be a film in which at least one functional layer is provided between the second base material 50 and the transparent conductive layer 52, for example. Examples of such a functional layer include an antireflection layer and a transparent dielectric layer formed of SiO 2 , TiO 2 or the like as in the first film.

第１基材４２、第２基材５０としては、公知の透明樹脂基材が限定なく使用可能である。具体的には、ＰＥＴ等のポリエステル系樹脂、アセテート系樹脂、ポリエーテルスルホン系樹脂、ポリカーボネート系樹脂、ポリアミド系樹脂、ポリイミド系樹脂、ポリオレフィン系樹脂、（メタ）アクリル系樹脂、ポリ塩化ビニル系樹脂、ポリ塩化ビニリデン系樹脂、ポリスチレン系樹脂、ポリビニルアルコール系樹脂、ポリアリレート系樹脂、ポリフェニレンサルファイド系樹脂等が例示される。第１基材、第２基材は同じ材料を使用してもよく、異なる材料を使用してもよい。   As the 1st base material 42 and the 2nd base material 50, a publicly known transparent resin base material can be used without limitation. Specifically, polyester resins such as PET, acetate resins, polyethersulfone resins, polycarbonate resins, polyamide resins, polyimide resins, polyolefin resins, (meth) acrylic resins, polyvinyl chloride resins And polyvinylidene chloride resin, polystyrene resin, polyvinyl alcohol resin, polyarylate resin, polyphenylene sulfide resin, and the like. The first base material and the second base material may use the same material or different materials.

第２フィルム（導電フィルム）６２の透明導電層５２を構成する材料、第１フィルム１６のハードコート層、アンチグレア層構成材料は、いずれも公知の材料が限定なく使用可能である。   As the material constituting the transparent conductive layer 52 of the second film (conductive film) 62, the hard coat layer of the first film 16, and the antiglare layer constituting material, any known materials can be used without limitation.

また、第２フィルム６２において、第２基材５０と透明導電層５２との間に透明誘電体層を設ける場合、その構成材料は、スパッタリングや真空蒸着法などにより形成される酸化チタン等の無機材料、コーティング法により形成されるポリウレタン系樹脂、アクリル系樹脂、シロキサン系ポリマー等が例示される。   In the second film 62, when a transparent dielectric layer is provided between the second base material 50 and the transparent conductive layer 52, the constituent material is inorganic such as titanium oxide formed by sputtering or vacuum evaporation. Examples include materials, polyurethane resins formed by coating methods, acrylic resins, siloxane polymers, and the like.

第１基材の第２面、第２基材の第２面に好適に形成されるオリゴマー防止層を構成する材料としては、公知の材料を使用することができる。具体的には、アクリル系樹脂、ウレタン系樹脂、メラミン系樹脂、紫外線硬化型樹脂、エポキシ樹脂等の樹脂材料、前記樹脂材料とアルミナ、シリカ、マイカ等の無機材料との複合材料、金、白金、銀、パラジウム、銅、アルミニウム、ニッケル、クロム、チタン、鉄、コバルト、錫、並びにこれ等の金属の合金等の金属材料、酸化インジウム、酸化錫、酸化チタン、酸化カドミウムやこれらから選択される２種以上の混合物等の金属酸化物、ヨウ化銅等の金属化合物などが例示される。   A known material can be used as the material constituting the oligomer prevention layer suitably formed on the second surface of the first substrate and the second surface of the second substrate. Specifically, resin materials such as acrylic resins, urethane resins, melamine resins, ultraviolet curable resins, and epoxy resins, composite materials of the resin materials and inorganic materials such as alumina, silica, and mica, gold, platinum Selected from metal materials such as silver, palladium, copper, aluminum, nickel, chromium, titanium, iron, cobalt, tin, and alloys of these metals, indium oxide, tin oxide, titanium oxide, cadmium oxide and the like Examples thereof include metal oxides such as a mixture of two or more kinds, and metal compounds such as copper iodide.

オリゴマー防止層の形成方法は、使用する材料に応じて、公知の方法から適宜選択して使用する。上述の樹脂材料ないしこれ等の樹脂を使用した複合材料をオリゴマー防止層とする場合には、例えばコーターを使用した塗布方法、スプレー法、スピンコート法、インラインコート法が使用可能である。   The method for forming the oligomer prevention layer is appropriately selected from known methods depending on the material used. When the above-described resin material or a composite material using these resins is used as the oligomer prevention layer, for example, a coating method using a coater, a spray method, a spin coating method, or an in-line coating method can be used.

金属材料、金属酸化物、金属化合物をオリゴマー防止層構成材料として使用する場合には、例えば、真空蒸着法、スパッタリング法、イオンプレーティング法、スプレー分解法、化学メッキ法、電気メッキ法などが使用可能である。   When using metal materials, metal oxides, and metal compounds as constituent materials for the oligomer prevention layer, for example, vacuum deposition, sputtering, ion plating, spray decomposition, chemical plating, electroplating, etc. are used. Is possible.

第１フィルムと第２フィルムとを積層する接着剤層４４を構成する接着剤は公知の材料が限定なく使用可能であり、具体的にはアクリル樹脂系粘着剤、シリコーン系粘着剤、ゴム系粘着剤等が好適な材料として例示される。またスペーサーに接着剤層を設ける場合、接着剤としては感圧接着剤（粘着剤）を使用することが好ましい。係る粘着剤としても公知のゴム系、アクリル樹脂系等の粘着剤が限定なく使用可能であり、フィルムを巻き戻して使用する際の剥離性等を考慮して適宜選択して使用する。   As the adhesive constituting the adhesive layer 44 for laminating the first film and the second film, known materials can be used without limitation, and specifically, an acrylic resin-based adhesive, a silicone-based adhesive, and a rubber-based adhesive. An agent etc. are illustrated as a suitable material. When an adhesive layer is provided on the spacer, it is preferable to use a pressure sensitive adhesive (adhesive) as the adhesive. As the pressure-sensitive adhesive, known rubber-based and acrylic resin-based pressure-sensitive adhesives can be used without limitation, and are appropriately selected in consideration of releasability when the film is rewound and used.

（実施例１）
厚さ１２５μｍのＰＥＴフィルム（第１基材）の第１面にアクリルウレタン系樹脂からなる厚さ５μｍのハードコート処理層を有するＨＣフィルム（第１フィルム）を得た。 (Example 1)
An HC film (first film) having a 5 μm thick hard coat treatment layer made of an acrylic urethane-based resin on the first surface of a 125 μm thick PET film (first base material) was obtained.

厚さ３８μｍのセパレーターにファウンテンコーターを使用して厚さ２５μｍのアクリル系粘着剤層を形成し、第１フィルムの第１基材であるＰＥＴフィルムのハードコート処理層が形成されていない面（第２面）に接着させ、ＨＣフィルム粘着品（接着剤層付き第１フィルム）とした。ＨＣフィルム粘着品の両端部には幅２０ｍｍの粘着層を有するポリオレフィン系共押出し保護フィルム（接着力：ＪＩＳ‐Ｚ‐１５５２にて３０ｍＮ／２５ｍｍ）をセパレーターと接着するよう挿入し、ＨＣフィルム粘着品を巻き取った。   A 25 μm-thick acrylic pressure-sensitive adhesive layer is formed on a 38 μm-thick separator using a fountain coater, and the hard film-treated layer of the PET film, which is the first substrate of the first film, is not formed (first surface) 2 side) to make an HC film adhesive (first film with an adhesive layer). Insert a polyolefin co-extrusion protective film (adhesive strength: 30 mN / 25 mm according to JIS-Z-1552) with an adhesive layer with a width of 20 mm at both ends of the HC film adhesive to adhere to the separator. Rolled up.

厚さ２３μｍのＰＥＴフィルム（第２基材）の第１面にＩＴＯ蒸着膜を形成しＩＴＯフィルム（第２フィルム）を作成し、両端部に幅１０ｍｍのＰＥＴフィルムをスペーサーとしてＩＴＯ蒸着膜が形成されていない面（第２面）に挿入しながら巻き取った。   An ITO vapor deposition film is formed on the first surface of a 23 μm thick PET film (second base material) to create an ITO film (second film), and an ITO vapor deposition film is formed on both ends using a PET film having a width of 10 mm as a spacer. It wound up, inserting in the surface (2nd surface) which is not made.

ＨＣフィルム粘着品（接着剤層付き第１フィルム）をロール体から繰り出し、同時にセパレーター及びスペーサーであるポリオレフイン系共押出し保護フィルムを巻き取った。ＩＴＯフィルム（第２フィルム）をロール体から繰り出し、スペーサーである幅１０ｍｍのＰＥＴフィルムを巻き取りながらＩＴＯ蒸着膜が形成されていない面（第２面）とアクリル系粘着剤層を張り合わせ透明導電性フィルムを得た。   An HC film adhesive (first film with an adhesive layer) was fed out from the roll body, and at the same time, a polyolefin-based coextrusion protective film as a separator and a spacer was wound up. The ITO film (second film) is unwound from the roll body, and the surface (second surface) on which the ITO vapor-deposited film is not formed and the acrylic pressure-sensitive adhesive layer are laminated while winding the PET film having a width of 10 mm as a spacer. A film was obtained.

この透明導電性フィルムの打痕発生率を求めたところφ＜３００μｍの打痕は（４個／ｍ2 ）でありφ≧３００μｍ打痕は（２個／ｍ2 ）であった。打痕の大きさφは、その原因となる異物の大きさで示した。打痕検査サンプリングはロール体より１０００ｍｍ×１０００ｍｍを抜き取り、検査方法は蛍光灯下で反射光目視検査にて行った。異物の大きさのφの計算方法は図６に示した。
（比較例１）
ＨＣフィルム粘着品を巻き取る工程においてポリオレフイン系共押出し保護フィルム（スペーサー）を挿入しなかったこと、及びＩＴＯフィルムを巻き取る工程において幅１０ｍｍのＰＥＴフィルム（スペーサー）を挿入しなかったこと以外は実施例１と同様の方法により透明導電性フィルムを得た。 When the dent occurrence rate of this transparent conductive film was determined, the dent of φ <300 μm was (4 / m 2 ), and the ≧≧ 300 μm dent was (2 / m 2 ). The size φ of the dent is indicated by the size of the foreign matter that causes the dent. The dent inspection sampling was performed by extracting 1000 mm × 1000 mm from the roll body, and the inspection method was a visual inspection of reflected light under a fluorescent lamp. The calculation method of φ of the size of the foreign material is shown in FIG.
(Comparative Example 1)
Implemented except that no polyolefin co-extrusion protective film (spacer) was inserted in the process of winding the HC film adhesive, and no PET film (spacer) 10 mm wide was inserted in the process of winding the ITO film A transparent conductive film was obtained in the same manner as in Example 1.

この透明導電性フィルムの打痕発生率を求めたところφ＜３００μｍの打痕は（１６個／ｍ2 ）でありφ≧３００μｍ打痕は（７個／ｍ2 ）であった。打痕検査サンプリングはロール体より１０００ｍｍ×１０００ｍｍを抜き取り、検査方法は蛍光灯下で反射光日視検査にて行った。 When the dent occurrence rate of this transparent conductive film was determined, the dent of φ <300 μm was (16 / m 2 ) and the φ ≧ 300 μm dent was (7 / m 2 ). The dent inspection sampling was performed by extracting 1000 mm × 1000 mm from the roll body, and the inspection method was a reflected light visual inspection under a fluorescent lamp.

接着剤層付き第１フィルム製造工程を例示したモデル図Model diagram illustrating the first film manufacturing process with adhesive layer 両端部にスペーサーを有する接着剤層付き第１フィルムの構造を例示した図The figure which illustrated the structure of the 1st film with an adhesive layer which has a spacer in both ends 透明導電性フィルムを製造する積層工程を例示したモデル図Model diagram illustrating the lamination process for manufacturing a transparent conductive film スペーサー付き透明導電性フィルムを示した断面図Cross section showing transparent conductive film with spacer 透明導電性フィルムの幅方向両端部にスペーサーを接着する工程を示した図The figure which showed the process which adheres a spacer to the width direction both ends of a transparent conductive film 異物の大きさのφの計算方法を示した図Diagram showing how to calculate the foreign material size φ

符号の説明Explanation of symbols

１６ 第１フィルム
１８ 接着剤層付き第１フィルム
１０ セパレーター
６２ 第２フィルム
７０ 透明導電性フィルム 16 First film 18 First film with adhesive layer 10 Separator 62 Second film 70 Transparent conductive film

Claims (6)

第１基材の第１面にハードコート層及び／又はアンチグレア層を有する第１フィルムと第２基材の第１面に透明導電膜を有する第２フィルムとが接着剤層を介して積層された透明導電性フィルムの製造方法であって、
第１フィルムに接着剤層を形成して接着剤層付き第１フィルムのロール体とする接着剤層付き第１フィルム製造工程、及び前記接着剤層付き第１フィルムと前記第２フィルムとを接着、積層して透明導電性フィルムとする積層工程とを有し、
接着剤層付き前記第１フィルム製造工程は、
セパレーターの第１面に接着剤層を形成する接着剤シート形成工程、
前記接着剤シートの接着剤層に前記第１フィルムを供給して接着する接着剤層付き第１フィルム形成工程、
及び前記接着剤層付き第１フィルムの前記セパレーターの第２面と前記第１フィルム層との間の両端部にスペーサーを供給しながら巻芯に巻き重ねて接着剤層付き第１フィルムのロール体とする巻き取り工程を有するものであり、
前記第２フィルムは、両端部にスペーサーを供給して巻芯に巻き重ねられた第２フィルムのロール体であり、
前記積層工程は、前記接着剤層付き第１フィルムをロール体から巻き戻すと共にスペーサーとセパレーターとを除去する接着剤層付き第１フィルム供給工程、前記第２フィルムをロール体から巻き戻すと共にスペーサーを除去する第２フィルム供給工程、及び前記接着剤層付き第１フィルムと第２フィルムとを接着剤層を介して積層する接着工程を有するものであることを特徴とする透明導電性フィルムの製造方法。 A first film having a hard coat layer and / or an antiglare layer on the first surface of the first substrate and a second film having a transparent conductive film on the first surface of the second substrate are laminated via an adhesive layer. A method for producing a transparent conductive film comprising:
Forming the first film with an adhesive layer by forming an adhesive layer on the first film, and bonding the first film with the adhesive layer and the second film as a roll body of the first film with the adhesive layer And a laminating step for laminating to form a transparent conductive film,
The first film manufacturing process with the adhesive layer is as follows:
An adhesive sheet forming step of forming an adhesive layer on the first surface of the separator;
A first film forming step with an adhesive layer for supplying and bonding the first film to the adhesive layer of the adhesive sheet;
And the roll body of the 1st film with an adhesive layer by winding around a core, supplying a spacer to the both ends between the 2nd side of the separator of the 1st film with the adhesive layer, and the 1st film layer It has a winding process and
The second film is a roll of a second film that is wound around a core by supplying spacers at both ends,
In the laminating step, the first film with the adhesive layer is rewound from the roll body and the first film supply step with the adhesive layer for removing the spacer and the separator, and the second film is rewound from the roll body and the spacer is removed. A method for producing a transparent conductive film, comprising: a second film supply step to be removed; and an adhesion step of laminating the first film with the adhesive layer and the second film through the adhesive layer. . 第１基材の第１面にハードコート層及び／又はアンチグレア層を有する第１フィルムと第２基材の第１面に透明導電膜を有する第２フィルムとが接着剤層を介して積層された透明導電性フィルムの製造方法であって、
第２フィルムに接着剤層を形成して接着剤層付き第２フィルムのロール体とする接着剤層付き第２フィルム製造工程、及び前記接着剤層付き第２フィルムと前記第１フィルムとを接着、積層して透明導電性フィルムとする積層工程とを有し、
前記接着剤層付き第２フィルム製造工程は、
セパレーターの第１面に接着剤層を形成する接着剤シート形成工程、
前記接着剤シートの接着剤層に前記第２フィルムを供給して接着する接着剤層付き第２フィルム形成工程、
及び前記接着剤層付き第２フィルムの前記セパレーターの第２面と前記第２フィルム層との間の両端部にスペーサーを供給しながら巻芯に巻き重ねて接着剤層付き第２フィルムのロール体とする巻き取り工程を有するものであり、
前記第１フィルムは、両端部にスペーサーを供給して巻芯に巻き重ねられた第１フィルムのロール体であり、
前記積層工程は、前記接着剤層付き第２フィルムをロール体から巻き戻すと共にスペーサーとセパレーターとを除去する接着剤層付き第２フィルム供給工程、前記第１フィルムをロール体から巻き戻すと共にスペーサーを除去する第１フィルム供給工程、及び前記接着剤層付き第２フィルムと第１フィルムとを接着剤層を介して積層する接着工程を有するものであることを特徴とする透明導電性フィルムの製造方法。 A first film having a hard coat layer and / or an antiglare layer on the first surface of the first substrate and a second film having a transparent conductive film on the first surface of the second substrate are laminated via an adhesive layer. A method for producing a transparent conductive film comprising:
Forming the second film with an adhesive layer to form a second film with an adhesive layer by forming an adhesive layer on the second film, and bonding the second film with the adhesive layer and the first film together And a laminating step for laminating to form a transparent conductive film,
The second film manufacturing process with the adhesive layer,
An adhesive sheet forming step of forming an adhesive layer on the first surface of the separator;
A second film forming step with an adhesive layer for supplying and bonding the second film to the adhesive layer of the adhesive sheet;
And the roll body of the 2nd film with an adhesive layer by winding around a core, supplying a spacer to the both ends between the 2nd side of the separator of the 2nd film with an adhesive layer, and the 2nd film layer It has a winding process and
The first film is a roll of a first film that is wound around a core by supplying spacers at both ends.
In the laminating step, the second film with the adhesive layer is rewound from the roll body and the second film supply step with the adhesive layer for removing the spacer and the separator, and the first film is rewound from the roll body and the spacer is removed. A method for producing a transparent conductive film, comprising: a first film supply step to be removed; and an adhesion step in which the second film with the adhesive layer and the first film are laminated via the adhesive layer. . 前記スペーサーは、片面に接着剤層を有し、前記巻き取り工程においては、前記スペーサーの接着剤層形成面を前記セパレーターに接触させるように供給することを特徴とする請求項１又は２に記載の導電性フィルムの製造方法。 The spacer has an adhesive layer on one side, and in the winding step, the spacer is supplied so that the adhesive layer forming surface of the spacer is in contact with the separator. The manufacturing method of an electroconductive film. 前記透明導電性フィルムは、前記第１フィルムと第２フィルムとが、第１基材の第２面と第２基材の第２面とが接着剤層を介して接着して積層されたものであることを特徴とする請求項１〜３のいずれかに記載の透明導電性フィルムの製造方法。 The transparent conductive film is formed by laminating the first film and the second film by bonding the second surface of the first base material and the second surface of the second base material through an adhesive layer. The manufacturing method of the transparent conductive film in any one of Claims 1-3 characterized by the above-mentioned. 前記スペーサーが、熱可塑性樹脂フィルムよりなることを特徴とする請求項１〜４のいずれかに記載の透明導電性フィルムの製造方法。 The said spacer consists of a thermoplastic resin film, The manufacturing method of the transparent conductive film in any one of Claims 1-4 characterized by the above-mentioned. 前記スペーサーの幅が、５ｍｍ〜１００ｍｍであることを特徴とする請求項１〜５のいずれかに記載の透明導電性フィルムの製造方法。 The method for producing a transparent conductive film according to claim 1, wherein the spacer has a width of 5 mm to 100 mm.
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TW200516502A (en) 2005-05-16
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KR20050046576A (en) 2005-05-18
CN1310124C (en) 2007-04-11

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