JP4303896B2 - Film bonding equipment - Google Patents

Film bonding equipment Download PDF

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Publication number
JP4303896B2
JP4303896B2 JP2001138218A JP2001138218A JP4303896B2 JP 4303896 B2 JP4303896 B2 JP 4303896B2 JP 2001138218 A JP2001138218 A JP 2001138218A JP 2001138218 A JP2001138218 A JP 2001138218A JP 4303896 B2 JP4303896 B2 JP 4303896B2
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JP
Japan
Prior art keywords
film
peeling
bonded
bonding
roller
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Expired - Fee Related
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JP2001138218A
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Japanese (ja)
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JP2002331583A (en
Inventor
常二 竹本
直安 能木
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Sumitomo Chemical Co Ltd
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Sumitomo Chemical Co Ltd
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Priority to JP2001138218A priority Critical patent/JP4303896B2/en
Publication of JP2002331583A publication Critical patent/JP2002331583A/en
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Description

【0001】
【発明の属する技術分野】
本発明は、フィルムの貼合装置に関し、より詳しくは、例えば位相差フィルムから剥離シートを剥がしながら、偏光板上に貼り合わせるのに好適なフィルムの貼合装置に関する。
【0002】
【従来の技術】
一般に、長いテープ状のフィルムとフィルム、シート、板等の被貼合部材とを連続的に貼り合せる際には、2本の貼合ローラ間に前記フィルムと前記被貼合部材とを重ね合わせて送り込み貼り合せる方法が用いられている。
【0003】
上記方法の一例として、図5に一般的なフィルムの貼合装置18を示す。フィルム2と被貼合部材3とを貼り合せる場合、フィルム原反6からフィルム2を巻き出し、補助ローラ21を通過した後、フィルム2表面の剥離シート4を剥がし、上貼合ローラ10と下貼合駆動ローラ11で駆動しているキャリアフィルム12との間にフィルム2を送り、被貼合部材3と重ね合わせて貼り合せ、積層体13を作製する。被貼合部材3表面の剥離シート5は、手動または自動で剥がすことができる。一方、フィルム2から剥がされた剥離シート4は、剥離ローラ20を経て、巻取りローラ9で巻き取る。
【0004】
しかし、フィルム2と剥離シート4との粘着力は、必ずしも常に一定ではなくばらつきがあるため、剥離シート4を剥がす際に、剥離シート4とフィルム2との剥離箇所19が変動しやすい。この剥離箇所19が貼合中に変動すると、それによってフィルム2にかかる張力が変動したり、フィルム2が揺れ動いたりする。これらのことが原因で、フィルム2に伸縮が生じるため、フィルム2と被貼合部材3との貼り合せ位置が所定の位置からずれることになる。特に、位相差フィルムと偏光板等の光学部材を貼り合せる場合、僅かに貼り合せ位置がずれるだけで応力が生じ干渉縞等が生じて不良品となるため、その対策が必要とされていた。
【0005】
【発明が解決しようとする課題】
本発明の目的は、被貼合部材にフィルムを貼り合せて積層体を製造するに際し、フィルムと被貼合部材との貼り合わせ位置が所定の位置からずれることのないフィルムの貼合装置を提供することである。
【0006】
【課題を解決するための手段】
本発明者らは、上記課題を解決するため鋭意研究を重ねた結果、剥離箇所が変動するのは、従来の貼合装置では、半径が15mm前後の大きな剥離ローラが使用されているのが原因ではないかと考え、さらに研究を重ねた結果、剥離部材と剥離シートとの接触面の曲率半径を小さくすることによって、フィルムと剥離シートとの粘着力にばらつきがあるにも関わらず、積層体に縞模様が発生しないという知見を得て、本発明を完成するに至った。
【0007】
すなわち、本発明のフィルムの貼合装置は、フィルムから剥離シートを剥離させながら、このフィルムを被貼合部材に貼り合わせるための貼合装置であって、前記フィルムから剥離された前記剥離シートは、板状の剥離部材の下端接触面に接触し、この接触面を介して搬送方向を変えて巻き取りローラに搬送され、巻き取られるように構成されており、前記剥離部材の接触面は曲率半径が0.5〜2mmの曲面であり、かつ前記フィルムと前記剥離シートとの剥離箇所から前記剥離部材までの搬送経路と、前記剥離部材の曲率中心を通り地面に垂直な線とのなす角度θ1は45°〜55°であり、前記垂直な線と、前記剥離部材から前記巻き取りローラまでの搬送経路とのなす角度θ2は3°〜6°であることを特徴とする。
【0008】
本発明の貼合装置を用いることによって、剥離シートとフィルムとの剥離箇所が変動するのを防止でき、その結果、フィルムにかかる張力の変動やフィルムの揺れ動きが減少するため、被貼合部材との貼り合わせを正確な位置で行うことができる。
【0009】
また、本発明によれば、前記フィルムと剥離シートは、上貼合ローラの表面で剥離され、前記フィルムは上貼合ローラと前記被貼合部材を搬送するキャリアフィルムとの間に送られ、被貼合部材と貼り合わされるのがよい。これにより、前記フィルムからの前記剥離シートの剥離箇所は、フィルムを被貼合部材に貼り合わせる部位の近傍となる。これにより、フィルムから剥離シートを剥離後、すぐにフィルムを被貼合部材と貼り合せることができるため、剥離シートを剥がした後のフィルムの貼合面が露出したまま長く搬送されるのを防止できる。その結果、フィルムの貼合面に異物が付着するのを防ぎ、フィルムと被貼合部材との間に異物が混入するのを防止できる。
【0010】
本発明によれば、前記剥離部材の曲率中心から前記上貼合ローラの表面までの最短距離L1が3〜10mmの範囲であるのがよい。すなわち、曲率半径が前記範囲内の剥離部材を用いることによって、従来の曲率半径の大きい剥離部材の場合と比較して、剥離部材をフィルムの近傍に設置することができるため、剥離箇所の変動をより確実に防止することができる。
【0011】
【発明の実施の形態】
以下、本発明の一実施形態を図1〜4に基づいて説明する。図1は、本発明の一実施形態であるフィルムの貼合装置1の構成を示す。フィルム2および被貼合部材3の表面には傷つき防止や異物付着防止のため剥離シート4、5がそれぞれ貼り付けてある。フィルム原反6からフィルム2を巻き出し、補助ローラ7、22を通過後に、フィルム2表面の剥離シート4を剥がし、上貼合ローラ10とキャリアフィルム12との間にフィルム2を送り、剥離シート5を剥がしながらキャリアフィルム12上を搬送されてきた被貼合部材3と重ね合わせて貼り合せ、積層体13を作製する。前記キャリアフィルム12は、下貼合駆動ローラ11により駆動している。
【0012】
一方、フィルム2から剥がした剥離シート4は、剥離部材8に接触させ、この接触面を介して搬送方向を変え、巻き取りローラ9で巻き取られる。図2は、剥離部材8周辺の拡大図である。図1、2に示すように、フィルム2と剥離シート4との剥離箇所15から剥離部材8までの搬送経路と、剥離部材8の曲率中心16を通り地面に垂直な線17とのなす角度θ1は、45°〜55°であるのが適当である。また、前記線17と、剥離部材8から巻き取りローラ9までの搬送経路とのなす角度θ2は、3°〜6°であるのが適当である。
【0013】
上貼合ローラ10、下貼合駆動ローラ11およびキャリアフィルム12は、少なくともフィルム2および被貼合部材3の幅以上の幅を有し、下貼合駆動ローラ11が一定速度で駆動することにより、フィルム2および被貼合部材3を一定圧力で貼り合わせることができるように構成されている。また、キャリアフィルム12は、被貼合部材3が上貼合ローラ10方向へ水平を保った状態で、安定して搬送されるように設置されている。
【0014】
本発明におけるフィルム2としては、例えば液晶表示装置に用いられる偏光フィルム、位相差フィルム等の合成樹脂フィルムが挙げられる。
【0015】
被貼合部材3としては、フィルム、シート、板等の一定の厚みを有し表裏が平らなものであればよく、ロール状の形態にしたものを連続的に供給するか、あるいは予め一定寸法に切断したものを1枚ずつ供給する。本発明における被貼合部材3としては、例えば液晶表示装置に用いられる偏光板等が挙げられる。
なお、フィルム2と被貼合部材3は、そのいずれか一方または両方に粘着剤が塗布されており、この粘着剤の粘着力によりフィルム2と被貼合部材3とを貼り合わせることができる。
また、粘着剤が塗布されている面には、剥離シート4あるいは剥離シート5として離型フィルムが貼られ、粘着剤が塗布されていない面には、剥離シート4あるいは剥離シート5として保護フィルムが貼られている。この保護フィルムはフィルム2あるいは被貼合部材3に傷が付いたり、汚れが付着したりしないようにするためのものであり、片面には粘着剤が塗布されていてもよい。
【0016】
補助ローラ7、22は、フィルム原反6より引き出したフィルム2を円滑に上貼合ローラ10へ搬送するために設置している。
【0017】
本発明における剥離部材8は、金属、プラスチック、木等の材質から作られ、特に剥離シート4が接触する接触面は曲率半径が0.5〜2mmの曲面であることが必要である。曲率半径が0.5mm未満の曲面の場合、剥離シート4が剥離部材に接触しながら搬送される際に切れてしまうおそれがある。また、曲率半径が2mmを越える曲面の場合、摩擦抵抗が大きくなり、異物の発生があり望ましくない。
【0018】
図3および図4は、剥離部材8の一実施形態を示す斜視図および断面図である。本実施形態における剥離部材8は、例えば厚み(t)が1〜4mmの板材であり、剥離シート4が接触する接触面14は曲率半径が0.5〜2mmの曲面であるが、曲率半径を除く横幅、高さ、厚み等の寸法には、特に制約はなく、周辺設備や製品サイズ等に応じて設定すればよい。
【0019】
ところで、前記したように、フィルム2と剥離シート4との粘着力は、必ずしも常に一定ではなく、はらつきがあるため、フィルム2と剥離シート4の剥離箇所が変動しやすい。この剥離箇所の変動に伴い、剥離部材との接触面における剥離シート4の搬送方向に沿った接触長さも変動する。剥離部材の曲率半径が大きいほど、剥離箇所の変動によって生じる接触長さの変動も大きくなる。この接触長さの変動が大きいほど、剥離部材と剥離シート4との摩擦力等の変動も大きくなるため、剥離シート4が安定して搬送されず、剥離箇所の変動を増大させるものと推測される。
【0020】
これに対して、剥離部材8は、剥離シート4との接触面の曲率半径が小さく、前記範囲内であるため、摩擦力の変動も小さくなる。それに伴い剥離シート4が安定して搬送され、フィルム2にかかる張力の変動やフィルム2の振れ動きが減少するため、被貼合部材3との貼り合わせを正確な位置で行うことができる。
【0021】
また、図2に示すように、剥離部材8は、曲率中心16から上貼合ローラ10までの最短距離がL1となる位置に設置されており、その最短距離L1は3〜10mmの範囲であるのが好ましい。このように、剥離部材8を上貼合ローラ10の近傍に設置することによって、フィルム2から剥離シート4を剥離する剥離箇所15が、フィルム2を被貼合部材3に貼り合わせる部位の近傍となる。このため、剥離シート4を剥がした後のフィルム2の貼合面が露出したまま長く搬送されるのを防止できる。その結果、フィルム2の貼合面に異物が付着するのを防ぎ、フィルム2と被貼合部材3との間に異物が混入するのを防止できる。なお、曲率中心16と上貼合ローラ10との最短距離L1が3mm未満となる位置に剥離部材8を設置すると、フィルム2と剥離部材8とが接触し、フィルム2に傷が付くおそれがある。
【0022】
【発明の効果】
本発明のフィルムの貼合装置は、剥離部材の接触面が曲率半径0.5〜2mmの範囲であり、かつフィルムと剥離シートとの剥離箇所から前記剥離部材までの搬送経路と、前記剥離部材の曲率中心を通り地面に垂直な線とのなす角度θ1は45°〜55°であり、前記垂直な線と、前記剥離部材から巻き取りローラまでの搬送経路とのなす角度θ2は3°〜6°であることによって、フィルムと剥離シートとの剥離箇所の変動が抑制されるため、フィルムにかかる張力の変動や振れ動きが減少し、フィルムと被貼合部材との貼り合わせを正確な位置で行うことができ、光学部材積層体の不良品を削減することができるという効果がある。
【0023】
本発明のフィルムの貼合装置は、前記フィルムと剥離シートが、上貼合ローラの表面で剥離され、前記フィルムは上貼合ローラと前記被貼合部材を搬送するキャリアフィルムとの間に送られ、被貼合部材と貼り合わされるようにすると、フィルムからの剥離シートの剥離箇所が、フィルムを被貼合部材に貼り合わせる部位の近傍にあるため、剥離シートを剥がした後のフィルムに異物が付着するのを防ぎ、フィルムと被貼合部材との間に異物が混入するのを防止できるという効果がある。
【0024】
本発明のフィルムの貼合装置は、前記剥離部材の曲率中心から前記上貼合ローラの表面までの最短距離L1が3〜10mmの範囲であるので、剥離部材の曲率中心がフィルムの近傍に位置され、それによって、剥離箇所の変動がさらに抑制され、フィルムと被貼合部材との貼り合わせをより正確な位置で行うことができるという効果がある。
【図面の簡単な説明】
【図1】本発明の一実施形態であるフィルムの貼合装置を示した概略図である。
【図2】本発明の剥離部材周辺の拡大図である。
【図3】本発明の剥離部材の一実施形態を示した斜視図である。
【図4】本発明の剥離部材の一実施形態を示した断面図である。
【図5】従来のフィルムの貼合装置を示した概略図である。
【符号の説明】
1 フィルムの貼合装置
2 フィルム
3 被貼合部材
4 剥離シート
5 剥離シート
6 フィルム原反
7 補助ローラ
8 剥離部材
9 巻取りローラ
10 上貼合ローラ
11 下貼合駆動ローラ
12 キャリアフィルム
13 積層体
14 接触面
15 剥離箇所
16 剥離部材の曲率中心
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a film laminating apparatus, and more specifically, to a film laminating apparatus suitable for laminating on a polarizing plate while peeling a release sheet from a retardation film, for example.
[0002]
[Prior art]
In general, when continuously bonding a long tape-shaped film and a member to be bonded such as a film, a sheet, or a plate, the film and the member to be bonded are overlapped between two bonding rollers. The method of feeding and pasting is used.
[0003]
As an example of the above method, a general film laminating device 18 is shown in FIG. When bonding the film 2 and the to-be-bonded member 3, after unwinding the film 2 from the film original fabric 6, and passing the auxiliary roller 21, the peeling sheet 4 on the surface of the film 2 is peeled off, and the upper bonding roller 10 and the lower The film 2 is fed between the carrier film 12 driven by the laminating drive roller 11, and the laminated body 13 is produced by superimposing the laminating member 3 on the laminating member 3. The release sheet 5 on the surface of the bonded member 3 can be peeled off manually or automatically. On the other hand, the release sheet 4 peeled off from the film 2 passes through the release roller 20 and is taken up by the take-up roller 9.
[0004]
However, since the adhesive force between the film 2 and the release sheet 4 is not always constant and varies, the release location 19 between the release sheet 4 and the film 2 tends to fluctuate when the release sheet 4 is peeled off. If this peeling part 19 fluctuates during bonding, the tension applied to the film 2 fluctuates thereby, or the film 2 swings. Because of these reasons, the film 2 expands and contracts, so that the bonding position between the film 2 and the bonded member 3 is shifted from a predetermined position. In particular, when an optical member such as a retardation film and a polarizing plate is bonded, a stress is generated only when the bonding position is slightly shifted, and interference fringes or the like are generated, resulting in a defective product.
[0005]
[Problems to be solved by the invention]
The object of the present invention is to provide a film bonding apparatus in which the bonding position between the film and the bonded member is not deviated from a predetermined position when the laminate is manufactured by bonding the film to the bonded member. It is to be.
[0006]
[Means for Solving the Problems]
As a result of intensive studies to solve the above-mentioned problems, the present inventors have changed the peeling location because the conventional laminating apparatus uses a large peeling roller having a radius of about 15 mm. As a result of further research, as a result of reducing the radius of curvature of the contact surface between the release member and the release sheet, the laminate has a variation in the adhesive force between the film and the release sheet. Obtaining the knowledge that no stripe pattern occurs, the present invention has been completed.
[0007]
That is, the film laminating apparatus of the present invention is a laminating apparatus for laminating the film to a bonded member while peeling the release sheet from the film, and the release sheet peeled from the film is The plate-shaped peeling member is configured to come into contact with the lower end contact surface of the plate-like peeling member, and to be conveyed to the take-up roller by changing the conveyance direction via the contact surface. The contact surface of the peeling member has a curvature. radius Ri curved der of 0.5 to 2 mm, and formed between the film and the the conveying path from the release position of the release sheet to the peeling member, a line perpendicular to the street ground center of curvature of the peeling member angle θ1 is 45 ° to 55 °, the vertical line, wherein the angle θ2 between the conveyance path from the peeling member to the take-up roller and wherein the 3 ° to 6 ° der Rukoto.
[0008]
By using the bonding apparatus of the present invention, it is possible to prevent fluctuations in the peeled portion between the release sheet and the film, and as a result, fluctuations in tension applied to the film and shaking movement of the film are reduced. Can be performed at an accurate position.
[0009]
Moreover, according to this invention, the said film and peeling sheet are peeled on the surface of an upper bonding roller, The said film is sent between the upper bonding roller and the carrier film which conveys the said to-be-bonded member, It is good to be pasted with a member to be pasted. Thereby, the peeling location of the said peeling sheet from the said film becomes the vicinity of the site | part which bonds a film to a to-be-bonded member. As a result, the film can be bonded to the member to be bonded immediately after the release sheet is peeled off from the film, thus preventing the film from being conveyed for a long time with the bonding surface of the film after being peeled off being exposed. it can. As a result, it is possible to prevent foreign matters from adhering to the bonding surface of the film and to prevent foreign matters from being mixed between the film and the member to be bonded.
[0010]
According to this invention, it is good for the shortest distance L1 from the curvature center of the said peeling member to the surface of the said upper bonding roller to be the range of 3-10 mm. That is, by using a peeling member having a radius of curvature within the above range, the peeling member can be installed in the vicinity of the film as compared with the case of a conventional peeling member having a large curvature radius. It can prevent more reliably.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. Drawing 1 shows the composition of film pasting device 1 which is one embodiment of the present invention. Release sheets 4 and 5 are attached to the surfaces of the film 2 and the member 3 to be bonded, respectively, for preventing scratches and preventing foreign matter adhesion. The film 2 is unwound from the original film 6, and after passing through the auxiliary rollers 7 and 22, the release sheet 4 on the surface of the film 2 is peeled off, and the film 2 is fed between the upper laminating roller 10 and the carrier film 12, and the release sheet 5 is peeled off and laminated with the member 3 to be bonded which has been transported on the carrier film 12 to form a laminate 13. The carrier film 12 is driven by a lower bonding drive roller 11.
[0012]
On the other hand, the release sheet 4 peeled off from the film 2 is brought into contact with the release member 8, the conveying direction is changed via this contact surface, and the take-up roller 9 takes up the release sheet 4. FIG. 2 is an enlarged view around the peeling member 8. As shown in FIGS. 1 and 2, an angle θ <b> 1 formed between a conveyance path from the peeling portion 15 of the film 2 and the peeling sheet 4 to the peeling member 8 and a line 17 passing through the center of curvature 16 of the peeling member 8 and perpendicular to the ground. Is suitably 45 ° to 55 °. The angle θ2 formed by the line 17 and the conveyance path from the peeling member 8 to the take-up roller 9 is suitably 3 ° to 6 °.
[0013]
The upper laminating roller 10, the lower laminating drive roller 11 and the carrier film 12 have at least a width equal to or larger than the width of the film 2 and the bonded member 3, and the lower laminating driving roller 11 is driven at a constant speed. The film 2 and the member to be bonded 3 are configured to be bonded at a constant pressure. Moreover, the carrier film 12 is installed so that the to-be-bonded member 3 may be stably conveyed in the state which maintained the level to the upper bonding roller 10 direction.
[0014]
Examples of the film 2 in the present invention include synthetic resin films such as polarizing films and retardation films used in liquid crystal display devices.
[0015]
As the member 3 to be bonded, a film, a sheet, a plate or the like having a certain thickness and a flat front and back may be used. Supply the cut pieces one by one. Examples of the bonded member 3 in the present invention include a polarizing plate used in a liquid crystal display device.
In addition, as for the film 2 and the to-be-bonded member 3, the adhesive is apply | coated to any one or both, The film 2 and the to-be-bonded member 3 can be bonded by the adhesive force of this adhesive.
Further, a release film is applied as the release sheet 4 or the release sheet 5 on the surface to which the adhesive is applied, and a protective film is provided as the release sheet 4 or the release sheet 5 on the surface to which the adhesive is not applied. It is pasted. This protective film is for preventing the film 2 or the bonded member 3 from being scratched or contaminated, and an adhesive may be applied to one surface.
[0016]
The auxiliary rollers 7 and 22 are installed in order to smoothly convey the film 2 drawn from the original film 6 to the upper laminating roller 10.
[0017]
The peeling member 8 in the present invention is made of a material such as metal, plastic, wood and the like. In particular, the contact surface with which the peeling sheet 4 comes into contact needs to be a curved surface with a radius of curvature of 0.5 to 2 mm. In the case of a curved surface with a radius of curvature of less than 0.5 mm, the release sheet 4 may be cut when being conveyed while being in contact with the release member. Further, in the case of a curved surface having a curvature radius exceeding 2 mm, the frictional resistance is increased, and foreign matter is generated, which is not desirable.
[0018]
3 and 4 are a perspective view and a cross-sectional view showing an embodiment of the peeling member 8. The peeling member 8 in this embodiment is, for example, a plate material having a thickness (t) of 1 to 4 mm, and the contact surface 14 with which the peeling sheet 4 contacts is a curved surface having a curvature radius of 0.5 to 2 mm. Except for the width, height, thickness and other dimensions, there are no particular restrictions, and the dimensions may be set according to peripheral equipment, product size, and the like.
[0019]
By the way, as described above, the adhesive force between the film 2 and the release sheet 4 is not always constant, and there is variation, so that the release location between the film 2 and the release sheet 4 is likely to fluctuate. Along with the variation of the separation location, the contact length along the conveyance direction of the separation sheet 4 on the contact surface with the separation member also varies. The larger the radius of curvature of the peeling member, the larger the variation in contact length caused by fluctuations in the peeling location. As the variation in the contact length is larger, the variation in the frictional force between the release member and the release sheet 4 is also increased. Therefore, it is estimated that the release sheet 4 is not stably conveyed and increases the change in the peeled portion. The
[0020]
On the other hand, since the peeling member 8 has a small radius of curvature of the contact surface with the peeling sheet 4 and is within the above range, the fluctuation of the frictional force is also small. Accordingly, the release sheet 4 is stably conveyed, and fluctuations in tension applied to the film 2 and swinging movement of the film 2 are reduced, so that the bonding with the member to be bonded 3 can be performed at an accurate position.
[0021]
Moreover, as shown in FIG. 2, the peeling member 8 is installed in the position where the shortest distance from the curvature center 16 to the upper bonding roller 10 is L1, and the shortest distance L1 is in a range of 3 to 10 mm. Is preferred. Thus, by installing the peeling member 8 in the vicinity of the upper bonding roller 10, the peeling portion 15 where the peeling sheet 4 is peeled from the film 2 is in the vicinity of the portion where the film 2 is bonded to the bonded member 3. Become. For this reason, it can prevent conveying for a long time with the bonding surface of the film 2 after peeling the peeling sheet 4 exposed. As a result, it is possible to prevent foreign matter from adhering to the bonding surface of the film 2 and prevent foreign matter from being mixed between the film 2 and the member to be bonded 3. In addition, when the peeling member 8 is installed in the position where the shortest distance L1 between the curvature center 16 and the upper laminating roller 10 is less than 3 mm, the film 2 and the peeling member 8 may come into contact with each other and the film 2 may be damaged. .
[0022]
【The invention's effect】
The film bonding apparatus of the present invention is such that the contact surface of the peeling member has a radius of curvature of 0.5 to 2 mm , and the conveying path from the peeling portion between the film and the peeling sheet to the peeling member, and the peeling member. The angle θ1 formed with a line passing through the center of curvature and perpendicular to the ground is 45 ° to 55 °, and the angle θ2 formed between the vertical line and the conveying path from the peeling member to the take-up roller is 3 ° to 3 °. Since the change of the peeling part of a film and a peeling sheet is suppressed by being 6 degrees, the fluctuation | variation of the tension | tensile_strength and shake | fluctuation motion concerning a film reduce, and the bonding of a film and a to-be-bonded member is exact position. It is possible to reduce the number of defective optical member laminates.
[0023]
In the film bonding apparatus of this invention, the said film and peeling sheet are peeled on the surface of an upper bonding roller, The said film is between the upper bonding roller and the carrier film which conveys the said to-be-bonded member. When it is sent and bonded to the member to be bonded, the peeling part of the release sheet from the film is in the vicinity of the part where the film is bonded to the member to be bonded, so the film after peeling the release sheet foreign matter is prevented from adhering, which produces the effect of foreign matter can be prevented from being mixed between the film and the lamination member.
[0024]
Since the shortest distance L1 from the center of curvature of the peeling member to the surface of the upper laminating roller is in the range of 3 to 10 mm, the center of curvature of the peeling member is positioned in the vicinity of the film. Thereby, the fluctuation | variation of a peeling location is further suppressed and there exists an effect that bonding with a film and a to-be-bonded member can be performed in a more exact position .
[Brief description of the drawings]
FIG. 1 is a schematic view showing a film laminating apparatus according to an embodiment of the present invention.
FIG. 2 is an enlarged view around the peeling member of the present invention.
FIG. 3 is a perspective view showing an embodiment of a peeling member of the present invention.
FIG. 4 is a cross-sectional view showing an embodiment of a peeling member of the present invention.
FIG. 5 is a schematic view showing a conventional film laminating apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Film bonding apparatus 2 Film 3 Bonding member 4 Release sheet 5 Release sheet 6 Original film 7 Auxiliary roller 8 Release member 9 Winding roller 10 Upper bonding roller 11 Lower bonding drive roller 12 Carrier film 13 Laminate 14 Contact surface 15 Peeling part 16 Center of curvature of peeling member

Claims (4)

フィルムから剥離シートを剥離させながら、このフィルムを被貼合部材に貼り合わせるための貼合装置であって、
前記フィルムから剥離された前記剥離シートは、板状の剥離部材の下端接触面に接触し、この接触面を介して搬送方向を変えて巻き取りローラに搬送され、巻き取られるように構成されており、前記剥離部材の接触面は曲率半径が0.5〜2mmの曲面であり、かつ前記フィルムと前記剥離シートとの剥離箇所から前記剥離部材までの搬送経路と、前記剥離部材の曲率中心を通り地面に垂直な線とのなす角度θ1は45°〜55°であり、前記垂直な線と、前記剥離部材から前記巻き取りローラまでの搬送経路とのなす角度θ2は3°〜6°であることを特徴とする、フィルムの貼合装置。
While peeling the release sheet from the film, it is a bonding device for bonding this film to a member to be bonded,
The release sheet peeled off from the film is configured to come into contact with the lower end contact surface of the plate-like release member, and to be conveyed to the take-up roller by changing the transport direction via this contact surface and wound up. cage, the contact surface of the release member and the conveying path of Ri curved der curvature radius 0.5 to 2 mm, and the peeling off of the release sheet and the film to the peeling member, the center of curvature of the peeling member The angle θ1 formed between the vertical line and the line perpendicular to the ground is 45 ° to 55 °, and the angle θ2 formed between the vertical line and the conveying path from the peeling member to the winding roller is 3 ° to 6 °. characterized in der Rukoto, bonding apparatus of the film.
前記フィルムと剥離シートは、上貼合ローラの表面で剥離され、前記フィルムは上貼合ローラと前記被貼合部材を搬送するキャリアフィルムとの間に送られ、被貼合部材と貼り合わされる請求項1記載のフィルムの貼合装置。The film and the release sheet are peeled off at the surface of the upper bonding roller, and the film is sent between the upper bonding roller and the carrier film that conveys the member to be bonded, and is bonded to the member to be bonded. The film bonding apparatus according to claim 1. 前記剥離部材の曲率中心から前記上貼合ローラの表面までの最短距離L1が3〜10mmの範囲である請求項2記載のフィルムの貼合装置。The film bonding apparatus according to claim 2, wherein the shortest distance L1 from the center of curvature of the peeling member to the surface of the upper bonding roller is in the range of 3 to 10 mm . 前記フィルムおよび/または前記被貼合部材に粘着剤が塗布されている請求項1〜3のいずれかに記載のフィルムの貼合装置。The film bonding apparatus according to claim 1, wherein an adhesive is applied to the film and / or the member to be bonded.
JP2001138218A 2001-05-09 2001-05-09 Film bonding equipment Expired - Fee Related JP4303896B2 (en)

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