WO2016088619A1 - Method and device for producing optical film - Google Patents

Method and device for producing optical film Download PDF

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Publication number
WO2016088619A1
WO2016088619A1 PCT/JP2015/083040 JP2015083040W WO2016088619A1 WO 2016088619 A1 WO2016088619 A1 WO 2016088619A1 JP 2015083040 W JP2015083040 W JP 2015083040W WO 2016088619 A1 WO2016088619 A1 WO 2016088619A1
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WIPO (PCT)
Prior art keywords
detected
film
width direction
strip
optical film
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PCT/JP2015/083040
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French (fr)
Japanese (ja)
Inventor
岡野　彰
前田　実
宏太 仲井
将寛 八重樫
雄基 大瀬
Original Assignee
日東電工株式会社
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.)
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Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to CN201580002766.6A priority Critical patent/CN107041131A/en
Priority to KR1020167012936A priority patent/KR101757604B1/en
Priority to CN202210117239.1A priority patent/CN114236665A/en
Publication of WO2016088619A1 publication Critical patent/WO2016088619A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/34—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier scanning being effected by a photosensitive device
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements

Definitions

  • the present invention relates to an optical film manufacturing method and manufacturing apparatus.
  • An optical film is generally manufactured by producing a long film made of a predetermined resin material and then punching it as a film piece having a predetermined product shape using a punching device (for example, Patent Document 1).
  • a functional part such as an alignment mark may be provided at a specific position on the surface of the optical film.
  • the present invention has been made in order to solve the above-described conventional problems, and a main object of the present invention is a manufacturing method capable of manufacturing a film piece (optical film) in which functional parts are accurately arranged from a long strip-shaped film. And providing a manufacturing apparatus.
  • a band-shaped film having two or more detected parts in the width direction and two or more detected parts in the length direction is subjected to the width direction of the band-shaped film at a predetermined length direction feed pitch. Including cutting sequentially from one to the other, when cutting the strip-like film, detecting the position of the detected part, positioning the cut line with reference to the detected position of the detected part, Obtaining one piece of film having the detected portion to be detected one by one.
  • the position of the detected part is detected using a camera.
  • an optical film manufacturing apparatus before cutting out the band-shaped film in the width direction, detecting one side edge in the width direction of the band-shaped film, and when cutting out the band-shaped film, And moving from one side of the direction to the other, and the moving direction of the clipping means is determined based on the detected one side edge.
  • an optical film manufacturing apparatus includes a conveying unit that conveys the belt-like film at a predetermined feed pitch in the length direction, a detection unit that detects a detected portion of the belt-like film, and a width direction of the belt-like film from one to the other. And a cutting means for positioning the cutting line with reference to the detected position of the detected portion.
  • the detection means further detects one side edge in the width direction of the belt-like film, and the moving direction of the clipping means is determined based on the detected one side edge.
  • the position of the detected part is determined by detecting the position of the functional part as the detected part and positioning the cut line with the detected position of the detected part as a reference.
  • a well-positioned optical film can be obtained.
  • (A), (a ') and (b) to (d) are schematic views showing a method for producing an optical film according to one embodiment of the present invention.
  • (A)-(c) is a schematic plan view explaining the example of the arrangement pattern of the to-be-detected part by embodiment of this invention.
  • FIG. 1 (a), (a ') and (b) to (d) are schematic views showing a method for producing an optical film according to one embodiment of the present invention.
  • the strip film 100 having two or more detected portions 11 in the width direction and two or more detected portions 11 in the length direction is formed in the width direction of the strip film 100 at every predetermined length direction feed pitch.
  • the position of the detected part 11 is detected (FIG. 1 (a)), and the detected position of the detected part 11 is detected. This includes positioning the cut line as a reference (FIG. 1B), and obtaining the film pieces 10 each having the detected portion 11 to be detected one by one.
  • the optical film manufacturing apparatus used in the method for manufacturing an optical film of the present invention includes a transport unit that transports the belt-shaped film at a predetermined length direction feed pitch (hereinafter also simply referred to as a feed pitch), It includes a detecting means for detecting the detected portion and a cutout means.
  • the cutout means moves from one side to the other side in the width direction of the belt-like film, and positions the cutout line on the basis of the detected position of the detected portion.
  • FIG. 1A is a schematic cross-sectional view showing an example of the detection means and the cutout means.
  • a rectangular cutting blade for example, a Thomson blade
  • a camera is used as the detection means 30.
  • the detection unit 30 and the cutout unit 20 are integrally configured and are installed so as to be movable along the rail 40.
  • the detection means and the cutout means are installed separately, the detection means is fixed so as to detect a detected portion by imaging a predetermined area of the belt-like film, and the cutout means is movable. Installed.
  • the strip film 100 having two or more detected portions 11 in the width direction and two or more in the length direction is subjected to the width direction of the strip film 100 for each feed pitch. From one to the other (in the example shown in FIG. 1, from the left side to the right side of the drawing), the film pieces 10 having the detected portions 11 are obtained one by one.
  • the length direction is a direction that can correspond to the transport direction Y of the belt-like film, but is not limited to being parallel to the transport direction Y, and is ⁇ 45 ° with respect to the transport direction Y. It means a direction exceeding 45 °.
  • the width direction means a direction of ⁇ 45 ° to 45 ° with reference to a direction X orthogonal to the transport direction Y.
  • the belt-like film examples include a long optical film having an optical axis.
  • the film piece obtained by this invention can be used suitably as an optical film product used for an image display apparatus, for example.
  • Specific examples of the optical film having an optical axis include a retardation film and a polarizing film.
  • the detected part 11 is a part (functional part) that exhibits a predetermined function.
  • the functional part is a detected part, and the cut line is determined based on the functional part. According to the present invention, since the position to be cut out is determined after detecting the position of the detected portion, a film piece on which the detected portion (functional portion) is accurately positioned can be obtained. Moreover, even when there is variation in the interval between the detected portions on the strip film, or when the strip film is meandering, a film piece in which the detected portion is accurately positioned can be obtained.
  • the cut-out position cannot be adjusted according to the state of the strip-shaped film side, such as the variation in the interval between the functional sections and the meandering of the strip-shaped film.
  • a well-positioned film piece cannot be obtained.
  • the non-polarizing part namely, part which expresses the function which can permeate
  • Another example of the detected part (functional part) is an alignment mark.
  • the detected part 11 is a part that can be distinguished from the part other than the detected part 11 of the strip film 100. It is preferable that the detected part 11 can be distinguished from parts other than the detected part 11 in appearance. In one embodiment, the detected part 11 differs in light transmittance from parts other than the detected part. Moreover, in another embodiment, the to-be-detected part 11 differs in a color tone and / or lightness and darkness from parts other than a to-be-detected part. In FIG. 1, for the sake of easy viewing, the above-mentioned appearance distinction is not shown, and instead, the outline of the detected portion 11 is shown by a solid line.
  • FIG. 2A is a schematic plan view illustrating an example of an arrangement pattern of the detected portion 11 in the belt-like film 100
  • FIG. 2B illustrates another example of the arrangement pattern of the detected portion 11.
  • FIG. 2C is a schematic plan view illustrating still another example of the arrangement pattern of the detection target portion 11.
  • the detected part 11 can be arbitrarily arranged according to the use of the film piece.
  • the detected portions 11 are preferably arranged on a substantially straight line in the width direction (FIG. 2A).
  • the arrangement direction of the detected parts 11 with respect to the width direction edge of the belt-like film 100 can be any appropriate angle. That is, the arrangement direction of the detected parts may be orthogonal to the direction of the width direction edge of the belt-like film 100 (FIG.
  • the interval between the detected portions 11 may be the same (FIG. 2A) or may be different (FIG. 2C). According to the present invention, it is possible to obtain a film piece in which a detected portion is accurately positioned corresponding to various arrangement patterns of the detected portions. In addition, for example, as shown in FIG. 2C, a film piece in which the detected portion is accurately positioned can be obtained even if the arrangement pattern has no regularity.
  • the position of the detected part 11 is detected as shown in FIG. 1 (a), and then the detected position of the detected part 11 is detected as shown in FIG. 1 (b).
  • the cut line 12 is positioned as a reference. More specifically, the positioning of the cut line 12 is based on the position of the specific portion in the shape defined by the cut line 12 and the planar shape defined by the cut line 12 based on the detected position of the detected portion 11. This can be done in a controlled manner.
  • the specific location in the shape defined by the cut line 12 may be any location in the shape, such as the center of gravity, vertex, or a point on the side of the shape.
  • the strip film 100 is cut out, and the film pieces 10 having the detected portions 11 to be detected are obtained one by one.
  • the shape of the film piece 10 is defined by the cut line 12.
  • the shape of the film piece 10 can be any suitable shape. For example, a rectangle, a square, a polygon, a circle, an ellipse, etc. are mentioned.
  • the position of the detected part 11 is detected using a camera.
  • Arbitrary appropriate means can be employ
  • FIG. 1 the strip film 100 is cut out using a punching blade 20 corresponding to the shape of the film piece 10.
  • a punching blade 20 such as a Thomson blade
  • the cutting line 12 is positioned by detecting the position of the detected portion 11 and using the detected position of the detected portion 11 as a reference.
  • the position of a specific location in the planar shape defined by (for example, the center of gravity, apex, one point on the side, etc.) of the shape, and the orientation of the planar shape defined by the punching blade 20 (that is, perpendicular to the conveying direction Y and the conveying direction) The angle with respect to the direction X to be performed).
  • the punching blade 20 is moved upward or downward toward the strip film 100 to punch the strip film 100, thereby obtaining the film piece 10.
  • cutting means include cutting by laser light irradiation, cutting with a drill, router processing, water jet processing, and the like.
  • the cutting means 20 when the strip film 100 is cut out in the width direction, the cutting means 20 is moved from one side to the other side of the strip film 100 in the width direction. After cutting out one film piece by the above operation, the cutting means is moved in the width direction, and the next film piece is cut out by the same operation as the above operation (FIGS. 1B to 1D).
  • the movement of the cutout means 20 is a linear movement.
  • the moving direction of the clipping means 20 can be set in any appropriate direction depending on the arrangement of the detected part 11.
  • the moving direction of the cutting means 20 is preferably 90 ° ⁇ 45 °, more preferably 90 ° ⁇ 30 °, and still more preferably 90 ° with respect to the direction of one side edge in the width direction of the strip film 100. ⁇ 15 °.
  • one side edge in the width direction of the strip film 100 is detected, and the detected one side edge (more specifically, the one side edge)
  • the direction of movement of the cutout means 20 is determined based on (direction).
  • a detection means for detecting the detected portion 11 may be used, or a detection means different from the detection means for detecting the detected portion 11 may be used. . That is, the manufacturing apparatus of the present invention can include one or more detection means.
  • the strip film 100 is conveyed by a predetermined feed pitch, and the cutting operation in one row in the width direction is performed for the next row.
  • a plurality of film pieces 10 are formed from the long belt-like film 100 by repeating a predetermined number of times, with one cycle of the cutting operation in one row in the width direction and the conveyance of one pitch of the belt-like film 100 after the operation as one cycle.
  • the feed pitch can be set according to the distance in the length direction of the detected portion 11. For example, when the arrangement of the detected parts in the length direction is parallel to the transport direction Y, the feed pitch is preferably the same length as the distance in the length direction of the detected parts 11.
  • a long polarizer having a long shape and having non-polarizing portions arranged at predetermined intervals in the length direction and the width direction is used.
  • a portion other than the non-polarizing portion (hereinafter also referred to as a polarizing portion) transmits specific polarized light, whereas the non-polarizing portion transmits all polarized components.
  • Such a long polarizer is suitably used as a material for an image display device having a camera unit. More specifically, by using a polarizer cut out from a long polarizer having the non-polarizing part, the position of the non-polarizing part and the position of the camera part are combined to constitute an image display device.
  • the non-polarizing part is appropriately arranged (for example, By arranging the moving direction of the clipping means with respect to the conveying direction of the long polarizer, the direction of the absorption axis of the clipped polarizer can be precisely controlled by arranging as shown in FIG. it can. Moreover, the dispersion
  • the non-polarizing part is a decoloring part formed by decoloring a predetermined part of the polarizer intermediate.
  • the decoloring part can be formed by, for example, laser irradiation or chemical treatment (for example, acid treatment, alkali treatment, or a combination thereof).
  • the non-polarizing part is a through hole (typically, a through hole penetrating the polarizer in the thickness direction).
  • the through hole can be formed, for example, by mechanical punching (eg, punching, engraving blade punching, plotter, water jet) or removal of a predetermined portion of the polarizer intermediate (eg, laser ablation or chemical dissolution).
  • the non-polarizing portion can be distinguished from the portion other than the non-polarizing portion in appearance based on the color tone and / or light transmittance, and can be detected by the detecting means. Therefore, in the manufacturing method of the present invention, the non-polarizing part functions as the detected part 11 described above.
  • the production method of the present invention is suitably used when producing optical films such as retardation films and polarizer films.
  • it is suitably used for manufacturing a polarizer provided in an image display device with a camera (liquid crystal display device, organic EL device) such as a mobile phone such as a smartphone, a notebook PC, or a tablet PC.
  • a camera liquid crystal display device, organic EL device
  • a mobile phone such as a smartphone, a notebook PC, or a tablet PC.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polarising Elements (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Provided are a method and a device that make it possible to produce a film piece (an optical film) having a precisely arranged functional section from a long band-shaped film. This method for producing an optical film includes sequentially cutting out a band-shaped film having two or more sections to be detected in the width direction thereof and two or more sections to be detected in the length direction thereof, said band-shaped film being cut out from one side to the other side in the width direction for each of predetermined length-direction feed pitches. The method for producing an optical film also includes detecting the positions of the sections to be detected when cutting out the band-shaped film and positioning cut-out lines using the positions of the detected sections to be detected as a reference in order to obtain one film piece at a time having the detected sections to be detected.

Description

光学フィルムの製造方法および製造装置Optical film manufacturing method and manufacturing apparatus
　本発明は、光学フィルムの製造方法および製造装置に関する。 The present invention relates to an optical film manufacturing method and manufacturing apparatus.
　従来より、液晶表示装置等の画像表示装置には、偏光フィルムや位相差フィルムといった種々の光学フィルムが使用されており、これらの光学フィルムを備えることによって該画像表示装置は所望の画像表示特性を発揮している。光学フィルムは、一般に、所定の樹脂材料からなる長尺フィルムを作製した後、打ち抜き装置を用いて所定の製品形状を有するフィルム片として打ち抜かれることにより製造される（例えば、特許文献１）。 Conventionally, various optical films such as a polarizing film and a retardation film have been used for image display devices such as liquid crystal display devices. By providing these optical films, the image display device has desired image display characteristics. Demonstrating. An optical film is generally manufactured by producing a long film made of a predetermined resin material and then punching it as a film piece having a predetermined product shape using a punching device (for example, Patent Document 1).
　上記光学フィルムの使用方法等に応じて、光学フィルム表面の特定位置にアライメントマーク等の機能部が設けられることがある。近年の画像表示装置の高機能化に伴い、光学フィルムにおける機能部を、バラツキがないように精度よく配置することが求められている。 Depending on how to use the optical film, a functional part such as an alignment mark may be provided at a specific position on the surface of the optical film. With the recent enhancement of functions of image display devices, it is required to accurately arrange the functional units in the optical film so that there is no variation.
特開平１１－２３１１２９号公報Japanese Patent Laid-Open No. 11-231129
　本発明は上記従来の課題を解決するためになされたものであり、その主たる目的は、長尺の帯状フィルムから、機能部が精度よく配置されたフィルム片（光学フィルム）を製造し得る製造方法および製造装置を提供することにある。 The present invention has been made in order to solve the above-described conventional problems, and a main object of the present invention is a manufacturing method capable of manufacturing a film piece (optical film) in which functional parts are accurately arranged from a long strip-shaped film. And providing a manufacturing apparatus.
　本発明の光学フィルムの製造方法は、幅方向に２個以上および長さ方向に２個以上の被検出部を有する帯状フィルムを、所定の長さ方向送りピッチごとに、該帯状フィルムの幅方向の一方から他方へ向けて、順次切り抜くことを含み、該帯状フィルムを切り抜く際、該被検出部の位置を検出し、検出された該被検出部の位置を基準として切り抜き線の位置決めを行い、検出された該被検出部を有するフィルム片を１枚ずつ得ることを含む。
　１つの実施形態においては、カメラを用いて、上記被検出部の位置を検出する。
　１つの実施形態においては、幅方向において上記帯状フィルムを切り抜く前に、該帯状フィルムの幅方向の片側端辺を検出することと、該帯状フィルムを切り抜く際、切り抜き手段を、該帯状フィルムの幅方向の一方から他方へ向けて、移動させることとを含み、検出された該片側端辺を基準に、該切り抜き手段の移動方向を決定する。
　本発明の別の局面によれば、光学フィルムの製造装置が提供される。この光学フィルムの製造装置は、帯状フィルムを所定の長さ方向送りピッチで搬送する搬送手段と、該帯状フィルムが有する被検出部を検出する検出手段と、該帯状フィルムの幅方向の一方から他方へ向けて移動し、かつ、検出された該被検出部の位置を基準として切り抜き線の位置決めを行う切り抜き手段とを含む。
　１つの実施形態においては、上記検出手段が、上記帯状フィルムの幅方向の片側端辺をさらに検出し、検出された該片側端辺を基準に、上記切り抜き手段の移動方向が決定される。 In the optical film manufacturing method of the present invention, a band-shaped film having two or more detected parts in the width direction and two or more detected parts in the length direction is subjected to the width direction of the band-shaped film at a predetermined length direction feed pitch. Including cutting sequentially from one to the other, when cutting the strip-like film, detecting the position of the detected part, positioning the cut line with reference to the detected position of the detected part, Obtaining one piece of film having the detected portion to be detected one by one.
In one embodiment, the position of the detected part is detected using a camera.
In one embodiment, before cutting out the band-shaped film in the width direction, detecting one side edge in the width direction of the band-shaped film, and when cutting out the band-shaped film, And moving from one side of the direction to the other, and the moving direction of the clipping means is determined based on the detected one side edge.
According to another aspect of the present invention, an optical film manufacturing apparatus is provided. The optical film manufacturing apparatus includes a conveying unit that conveys the belt-like film at a predetermined feed pitch in the length direction, a detection unit that detects a detected portion of the belt-like film, and a width direction of the belt-like film from one to the other. And a cutting means for positioning the cutting line with reference to the detected position of the detected portion.
In one embodiment, the detection means further detects one side edge in the width direction of the belt-like film, and the moving direction of the clipping means is determined based on the detected one side edge.
　本発明によれば、機能部を被検出部として、その位置を検出し、検出された該被検出部の位置を基準として切り抜き線の位置決めを行うことにより、被検出部（機能部）が精度よく位置する光学フィルムを得ることができる。 According to the present invention, the position of the detected part (functional part) is determined by detecting the position of the functional part as the detected part and positioning the cut line with the detected position of the detected part as a reference. A well-positioned optical film can be obtained.
（ａ）、（ａ’）および（ｂ）～（ｄ）は、本発明の1つの実施形態による光学フィルムの製造方法を示す概略図である。(A), (a ') and (b) to (d) are schematic views showing a method for producing an optical film according to one embodiment of the present invention. （ａ）～（ｃ）は、本発明の実施形態による被検出部の配置パターンの例を説明する概略平面図である。(A)-(c) is a schematic plan view explaining the example of the arrangement pattern of the to-be-detected part by embodiment of this invention.
　図１（ａ）、（ａ’）および（ｂ）～（ｄ）は、本発明の1つの実施形態による光学フィルムの製造方法を示す概略図である。本発明の製造方法においては、幅方向に２個以上および長さ方向に２個以上の被検出部１１を有する帯状フィルム１００を、所定の長さ方向送りピッチごとに、帯状フィルム１００の幅方向の一方から他方へ向けて、順次切り抜くことを含み、帯状フィルム１００を切り抜く際には、被検出部１１の位置を検出し（図１（ａ））、検出された被検出部１１の位置を基準として切り抜き線の位置決めを行い（図１（ｂ））、検出された被検出部１１を有するフィルム片１０を１枚ずつ得ることを含む。 1 (a), (a ') and (b) to (d) are schematic views showing a method for producing an optical film according to one embodiment of the present invention. In the manufacturing method of the present invention, the strip film 100 having two or more detected portions 11 in the width direction and two or more detected portions 11 in the length direction is formed in the width direction of the strip film 100 at every predetermined length direction feed pitch. In order to cut out the strip film 100, the position of the detected part 11 is detected (FIG. 1 (a)), and the detected position of the detected part 11 is detected. This includes positioning the cut line as a reference (FIG. 1B), and obtaining the film pieces 10 each having the detected portion 11 to be detected one by one.
　したがって、本発明の光学フィルムの製造法に用いられる光学フィルムの製造装置は、帯状フィルムを所定の長さ方向送りピッチ（以下、単に送りピッチともいう）で搬送する搬送手段と、該帯状フィルムが有する被検出部を検出する検出手段と、切り抜き手段とを含む。好ましくは、上記切り抜き手段は、帯状フィルムの幅方向の一方から他方へ向けて移動し、かつ、検出された該被検出部の位置を基準として切り抜き線の位置決めを行う。図１（ａ’）は、検出手段および切り抜き手段の一例を示す概略断面図である。この例においては、切り抜き手段２０として矩形状の切り抜き刃（例えば、トムソン刃）が用いられている。また、検出手段３０として、カメラが用いられている。１つの実施形態においては、図示例のように、検出手段３０と切り抜き手段２０とは、一体に構成され、かつ、レール４０に沿って移動可能なように設置される。別の実施例においては、検出手段と切り抜き手段とは別々に設置され、検出手段は帯状フィルムの所定領域を撮像して被検出部を検出し得るように固定され、切り抜き手段は移動可能なように設置される。 Therefore, the optical film manufacturing apparatus used in the method for manufacturing an optical film of the present invention includes a transport unit that transports the belt-shaped film at a predetermined length direction feed pitch (hereinafter also simply referred to as a feed pitch), It includes a detecting means for detecting the detected portion and a cutout means. Preferably, the cutout means moves from one side to the other side in the width direction of the belt-like film, and positions the cutout line on the basis of the detected position of the detected portion. FIG. 1A is a schematic cross-sectional view showing an example of the detection means and the cutout means. In this example, a rectangular cutting blade (for example, a Thomson blade) is used as the cutting means 20. A camera is used as the detection means 30. In one embodiment, as in the illustrated example, the detection unit 30 and the cutout unit 20 are integrally configured and are installed so as to be movable along the rail 40. In another embodiment, the detection means and the cutout means are installed separately, the detection means is fixed so as to detect a detected portion by imaging a predetermined area of the belt-like film, and the cutout means is movable. Installed.
　本発明の製造方法においては、上記のとおり、幅方向に２個以上および長さ方向に２個以上の被検出部１１を有する帯状フィルム１００を、送りピッチごとに、該帯状フィルム１００の幅方向の一方から他方へ向けて（図１に示す例においては、紙面左側から右側に向けて）、順次切り抜き、被検出部１１を有するフィルム片１０を１枚ずつ得る。なお、本明細書において、長さ方向とは、帯状フィルムの搬送方向Ｙに相当し得る方向であるが、搬送方向Ｙに平行である場合のみでなく、搬送方向Ｙを基準に－４５°を超えて４５°未満の方向を意味する。また、幅方向とは、搬送方向Ｙに直交する方向Ｘを基準に－４５°～４５°の方向を意味する。 In the production method of the present invention, as described above, the strip film 100 having two or more detected portions 11 in the width direction and two or more in the length direction is subjected to the width direction of the strip film 100 for each feed pitch. From one to the other (in the example shown in FIG. 1, from the left side to the right side of the drawing), the film pieces 10 having the detected portions 11 are obtained one by one. In the present specification, the length direction is a direction that can correspond to the transport direction Y of the belt-like film, but is not limited to being parallel to the transport direction Y, and is −45 ° with respect to the transport direction Y. It means a direction exceeding 45 °. The width direction means a direction of −45 ° to 45 ° with reference to a direction X orthogonal to the transport direction Y.
　上記帯状フィルムとしては、例えば、光軸を有する長尺光学フィルムが挙げられる。本発明により得られたフィルム片は、例えば、画像表示装置に使用される光学フィルム製品として好適に使用され得る。光軸を有する光学フィルムとしては、具体的には、位相差フィルム、偏光フィルム等が挙げられる。 Examples of the belt-like film include a long optical film having an optical axis. The film piece obtained by this invention can be used suitably as an optical film product used for an image display apparatus, for example. Specific examples of the optical film having an optical axis include a retardation film and a polarizing film.
　フィルム片１０において、被検出部１１は、所定の機能を発現する部分（機能部）である。言い換えれば、本発明においては、機能部を被検出部として、該機能部を基準に切り抜き線を決める。本発明によれば、被検出部の位置を検出した上で切り抜く位置を決めるので、被検出部（機能部）が精度よく位置するフィルム片を得ることができる。また、帯状フィルム上の被検出部の間隔にばらつきがある場合、あるいは、帯状フィルムが蛇行している場合においても、被検出部が精度よく位置するフィルム片を得ることができる。一方、複数枚のフィルム片を同時に切り抜くという従来の方法では、機能部の間隔のバラツキ、帯状フィルムの蛇行等の帯状フィルム側の状態に応じて、切り抜き位置を調整できないため、被検出部が精度よく位置するフィルム片を得ることができない。被検出部（機能部）としては、例えば、非偏光部を有する偏光子における、非偏光部（すなわち、すべての偏光成分を透過し得る機能を発現する部分）が挙げられる。被検出部（機能部）の別の例としては、アライメントマーク等が挙げられる。 In the film piece 10, the detected part 11 is a part (functional part) that exhibits a predetermined function. In other words, in the present invention, the functional part is a detected part, and the cut line is determined based on the functional part. According to the present invention, since the position to be cut out is determined after detecting the position of the detected portion, a film piece on which the detected portion (functional portion) is accurately positioned can be obtained. Moreover, even when there is variation in the interval between the detected portions on the strip film, or when the strip film is meandering, a film piece in which the detected portion is accurately positioned can be obtained. On the other hand, in the conventional method of cutting out a plurality of film pieces at the same time, the cut-out position cannot be adjusted according to the state of the strip-shaped film side, such as the variation in the interval between the functional sections and the meandering of the strip-shaped film. A well-positioned film piece cannot be obtained. As a detected part (functional part), the non-polarizing part (namely, part which expresses the function which can permeate | transmit all the polarization components) in the polarizer which has a non-polarizing part is mentioned, for example. Another example of the detected part (functional part) is an alignment mark.
　被検出部１１は、帯状フィルム１００の被検出部１１以外の部分とは、区別し得る部分である。被検出部１１は、被検出部１１以外の部分と、外観上、区別できることが好ましい。１つの実施形態においては、被検出部１１は、被検出部以外の部分と光透過性が異なる。また、別の実施形態においては、被検出部１１は、被検出部以外の部分とは色調および／または濃淡が異なる。なお、図１においては、見やすくするために、上記外観上の区別を示さず、その代わりに、被検出部１１の外郭を実線で示している。 The detected part 11 is a part that can be distinguished from the part other than the detected part 11 of the strip film 100. It is preferable that the detected part 11 can be distinguished from parts other than the detected part 11 in appearance. In one embodiment, the detected part 11 differs in light transmittance from parts other than the detected part. Moreover, in another embodiment, the to-be-detected part 11 differs in a color tone and / or lightness and darkness from parts other than a to-be-detected part. In FIG. 1, for the sake of easy viewing, the above-mentioned appearance distinction is not shown, and instead, the outline of the detected portion 11 is shown by a solid line.
　図２（ａ）は、帯状フィルム１００における被検出部１１の配置パターンの一例を説明する概略平面図であり、図２（ｂ）は、被検出部１１の配置パターンの別の例を説明する概略平面図であり、図２（ｃ）は、被検出部１１の配置パターンのさらに別の例を説明する概略平面図である。上記被検出部１１は、フィルム片の用途等に応じて、任意の適切な配置とされ得る。被検出部１１は、幅方向において、略一直線上に配置されていることが好ましい（図２（ａ））。また、帯状フィルム１００の幅方向端辺に対する被検出部１１の配列方向は、任意の適切な角度であり得る。すなわち、被検出部の配列方向は、帯状フィルム１００の幅方向端辺の方向に直交していてもよく（図２（ａ））、直交していなくてもよい（図２（ｂ））。また、幅方向および長さ方向それぞれにおいて、被検出部１１同士の間隔は、同じであってもよく（図２（ａ））、異なっていてもよい（図２（ｃ））。本発明によれば、様々な被検出部の配置パターンに対応して、被検出部が精度よく位置するフィルム片を得ることができる。また、例えば図２（ｃ）に示すように規則性のない配列パターンであっても、被検出部が精度よく位置するフィルム片を得ることができる。 FIG. 2A is a schematic plan view illustrating an example of an arrangement pattern of the detected portion 11 in the belt-like film 100, and FIG. 2B illustrates another example of the arrangement pattern of the detected portion 11. FIG. 2C is a schematic plan view illustrating still another example of the arrangement pattern of the detection target portion 11. The detected part 11 can be arbitrarily arranged according to the use of the film piece. The detected portions 11 are preferably arranged on a substantially straight line in the width direction (FIG. 2A). In addition, the arrangement direction of the detected parts 11 with respect to the width direction edge of the belt-like film 100 can be any appropriate angle. That is, the arrangement direction of the detected parts may be orthogonal to the direction of the width direction edge of the belt-like film 100 (FIG. 2A) or may not be orthogonal (FIG. 2B). Further, in each of the width direction and the length direction, the interval between the detected portions 11 may be the same (FIG. 2A) or may be different (FIG. 2C). According to the present invention, it is possible to obtain a film piece in which a detected portion is accurately positioned corresponding to various arrangement patterns of the detected portions. In addition, for example, as shown in FIG. 2C, a film piece in which the detected portion is accurately positioned can be obtained even if the arrangement pattern has no regularity.
　帯状フィルム１００を切り抜く際には、図１(ａ)に示すように被検出部１１の位置を検出し、その後、図１（ｂ）に示すように、検出された被検出部１１の位置を基準として切り抜き線１２の位置決めが行われる。より具体的には、切り抜き線１２の位置決めは、検出された被検出部１１の位置を基準として、切り抜き線１２が規定する形状における特定箇所の位置、ならびに、切り抜き線１２が規定する平面形状の向きを制御するようにして行われ得る。切り抜き線１２が規定する形状における特定箇所は、該形状のどの箇所であってもよく、例えば、該形状の重心、頂点、辺上の一点等が挙げられる。切り抜き線１２の位置決めを行った後、帯状フィルム１００を切り抜き、検出された被検出部１１を有するフィルム片１０を１枚ずつ得る。フィルム片１０の形状は、切り抜き線１２により規定される。フィルム片１０の形状は、任意の適切な形状であり得る。例えば、矩形、正方形、多角形、円形、楕円形等が挙げられる。 When the strip-shaped film 100 is cut out, the position of the detected part 11 is detected as shown in FIG. 1 (a), and then the detected position of the detected part 11 is detected as shown in FIG. 1 (b). The cut line 12 is positioned as a reference. More specifically, the positioning of the cut line 12 is based on the position of the specific portion in the shape defined by the cut line 12 and the planar shape defined by the cut line 12 based on the detected position of the detected portion 11. This can be done in a controlled manner. The specific location in the shape defined by the cut line 12 may be any location in the shape, such as the center of gravity, vertex, or a point on the side of the shape. After positioning the cut line 12, the strip film 100 is cut out, and the film pieces 10 having the detected portions 11 to be detected are obtained one by one. The shape of the film piece 10 is defined by the cut line 12. The shape of the film piece 10 can be any suitable shape. For example, a rectangle, a square, a polygon, a circle, an ellipse, etc. are mentioned.
　１つの実施形態においては、カメラを用いて、被検出部１１の位置を検出する。 In one embodiment, the position of the detected part 11 is detected using a camera.
　帯状フィルム１００を切り抜く際の切り抜き手段としては、任意の適切な手段が採用され得る。１つの実施形態においては、図１に示すように、フィルム片１０の形状に応じた打ち抜き刃２０を用いて、帯状フィルム１００を切り抜く。例えば、切り抜き手段としてトムソン刃のような打ち抜き刃２０を用いる場合、切り抜き線１２の位置決めは、被検出部１１の位置を検出し、検出された被検出部１１の位置を基準として、打ち抜き刃２０が規定する平面形状における特定箇所の位置（例えば、該形状の重心、頂点、辺上の一点等）、ならびに、打ち抜き刃２０が規定する平面形状の向き（すなわち、搬送方向Ｙおよび搬送方向と直交する方向Ｘに対する角度）を制御して、行われる。切り抜き線１２の位置決めを行った後、打ち抜き刃２０を帯状フィルム１００に向けて、上方向または下方向に移動させて、帯状フィルム１００を打抜くようにして、フィルム片１０を得る。 Arbitrary appropriate means can be employ | adopted as a cutting-out means at the time of cutting out the strip | belt-shaped film 100. FIG. In one embodiment, as shown in FIG. 1, the strip film 100 is cut out using a punching blade 20 corresponding to the shape of the film piece 10. For example, when a punching blade 20 such as a Thomson blade is used as the cutting means, the cutting line 12 is positioned by detecting the position of the detected portion 11 and using the detected position of the detected portion 11 as a reference. The position of a specific location in the planar shape defined by (for example, the center of gravity, apex, one point on the side, etc.) of the shape, and the orientation of the planar shape defined by the punching blade 20 (that is, perpendicular to the conveying direction Y and the conveying direction) The angle with respect to the direction X to be performed). After positioning the cut line 12, the punching blade 20 is moved upward or downward toward the strip film 100 to punch the strip film 100, thereby obtaining the film piece 10.
　上記切り抜き手段の別の例としては、レーザー光照射による切り抜き、ドリルによる切削加工、ルータ加工、ウォータージェット加工等が挙げられる。 Other examples of the cutting means include cutting by laser light irradiation, cutting with a drill, router processing, water jet processing, and the like.
　１つの実施形態においては、幅方向において帯状フィルム１００を切り抜く際、切り抜き手段２０を、帯状フィルム１００の幅方向の一方から他方へ向けて、移動させる。上記操作により、１枚のフィルム片を切り抜いた後、切り抜き手段を幅方向に移動させ、上記操作と同様の操作により、次のフィルム片を切り抜く（図１（ｂ）～（ｄ））。好ましくは、切り抜き手段２０の移動は、直線移動である。切り抜き手段２０の移動方向は、被検出部１１の配置に応じて、任意の適切な方向に設定され得る。切り抜き手段２０の移動方向は、帯状フィルム１００の幅方向の片側端辺の方向に対して、好ましくは９０°±４５°であり、より好ましくは９０°±３０°であり、さらに好ましくは９０°±１５°である。 In one embodiment, when the strip film 100 is cut out in the width direction, the cutting means 20 is moved from one side to the other side of the strip film 100 in the width direction. After cutting out one film piece by the above operation, the cutting means is moved in the width direction, and the next film piece is cut out by the same operation as the above operation (FIGS. 1B to 1D). Preferably, the movement of the cutout means 20 is a linear movement. The moving direction of the clipping means 20 can be set in any appropriate direction depending on the arrangement of the detected part 11. The moving direction of the cutting means 20 is preferably 90 ° ± 45 °, more preferably 90 ° ± 30 °, and still more preferably 90 ° with respect to the direction of one side edge in the width direction of the strip film 100. ± 15 °.
　１つの実施形態においては、幅方向において帯状フィルム１００を切り抜く前に、帯状フィルム１００の幅方向の片側端辺を検出し、検出された該片側端辺（より具体的には該片側端辺の方向）を基準に上記切り抜き手段２０の移動方向を決定する。帯状フィルムの幅方向端辺を基準に切り抜き手段の移動方向を決めることにより、帯状フィルムが蛇行している場合においても、被検出部（すなわち、機能部）が精度よく位置するフィルム片を得ることができる。 In one embodiment, before cutting out the strip film 100 in the width direction, one side edge in the width direction of the strip film 100 is detected, and the detected one side edge (more specifically, the one side edge) The direction of movement of the cutout means 20 is determined based on (direction). By determining the moving direction of the cutting means on the basis of the width direction edge of the belt-like film, even when the belt-like film is meandering, a film piece in which the detected part (that is, the functional part) is accurately located is obtained. Can do.
　帯状フィルム１００の幅方向の片側端辺の検出には、被検出部１１を検出する検出手段を用いてもよく、被検出部１１を検出する検出手段とは別の検出手段を用いてもよい。すなわち、本発明の製造装置は、１以上の検出手段を備え得る。 For detection of one side edge in the width direction of the belt-like film 100, a detection means for detecting the detected portion 11 may be used, or a detection means different from the detection means for detecting the detected portion 11 may be used. . That is, the manufacturing apparatus of the present invention can include one or more detection means.
　幅方向の一列において、帯状フィルム１００の切り抜きが完了した後は、帯状フィルム１００を所定の送りピッチ分、搬送し、次の一列について、幅方向の一列における切り抜き操作を行う。幅方向の一列における切り抜き操作、および該操作後の帯状フィルム１００の１ピッチ分の搬送を１サイクルとして、所定回数これを繰り返すことにより、長尺状の帯状フィルム１００から複数枚のフィルム片１０を得ることができる。送りピッチは、被検出部１１の長さ方向間隔に応じて設定され得る。例えば、長さ方向における被検出部の配列が、搬送方向Ｙと平行である場合、送りピッチは、被検出部１１の長さ方向間隔と同じ長さであることが好ましい。 After the cutting of the strip film 100 is completed in one row in the width direction, the strip film 100 is conveyed by a predetermined feed pitch, and the cutting operation in one row in the width direction is performed for the next row. A plurality of film pieces 10 are formed from the long belt-like film 100 by repeating a predetermined number of times, with one cycle of the cutting operation in one row in the width direction and the conveyance of one pitch of the belt-like film 100 after the operation as one cycle. Obtainable. The feed pitch can be set according to the distance in the length direction of the detected portion 11. For example, when the arrangement of the detected parts in the length direction is parallel to the transport direction Y, the feed pitch is preferably the same length as the distance in the length direction of the detected parts 11.
　１つの実施形態においては、上記帯状フィルムとして、長尺状であり、かつ、長さ方向および幅方向に所定の間隔で配置された非偏光部を有する長尺状偏光子が用いられる。上記長尺状偏光子において、非偏光部以外の部分（以下、偏光部ともいう）は特定の偏光を透過させるのに対し、上記非偏光部は、すべての偏光成分を透過する。このような長尺状偏光子は、カメラ部を有する画像表示装置の材料として好適に用いられる。より具体的には、上記非偏光部を有する長尺状偏光子から切り抜かれた偏光子を用いて、該非偏光部の位置と上記カメラ部の位置とを合わせて画像表示装置を構成することにより、カメラ性能に優れ、かつ、多機能化および高機能化を実現することが可能な画像表示装置を得ることができる。本発明の製造方法により、非偏光部を有する長尺状偏光子を切り抜けば、画像表示装置のカメラ部の位置に合わせて非偏光部の位置を精度よく設定できる。また、通常、長尺状偏光子の偏光部の吸収軸は、幅方向端辺に平行な方向または幅方向端辺と直交する方向に発現するため、非偏光部を適切に配置して（例えば、図２（ｂ）のように配置して）、長尺偏光子の搬送方向に対する切り抜き手段の移動方向を調整することにより、切り抜かれた偏光子の吸収軸の方向を精密に制御することができる。また、偏光子ごとの吸収軸の方向のばらつきを顕著に抑制することができる。 In one embodiment, as the strip film, a long polarizer having a long shape and having non-polarizing portions arranged at predetermined intervals in the length direction and the width direction is used. In the long polarizer, a portion other than the non-polarizing portion (hereinafter also referred to as a polarizing portion) transmits specific polarized light, whereas the non-polarizing portion transmits all polarized components. Such a long polarizer is suitably used as a material for an image display device having a camera unit. More specifically, by using a polarizer cut out from a long polarizer having the non-polarizing part, the position of the non-polarizing part and the position of the camera part are combined to constitute an image display device. It is possible to obtain an image display device that is excellent in camera performance and capable of realizing multiple functions and high functions. If a long polarizer having a non-polarizing part is cut through the manufacturing method of the present invention, the position of the non-polarizing part can be accurately set according to the position of the camera part of the image display device. In addition, since the absorption axis of the polarizing part of the long polarizer usually appears in a direction parallel to the widthwise side edge or in a direction perpendicular to the widthwise side edge, the non-polarizing part is appropriately arranged (for example, By arranging the moving direction of the clipping means with respect to the conveying direction of the long polarizer, the direction of the absorption axis of the clipped polarizer can be precisely controlled by arranging as shown in FIG. it can. Moreover, the dispersion | variation in the direction of the absorption axis for every polarizer can be suppressed notably.
　１つの実施形態においては、非偏光部は、偏光子中間体の所定の部分を脱色することにより形成された脱色部である。脱色部は、例えば、レーザー照射または化学処理（例えば、酸処理、アルカリ処理またはその組み合わせ）により形成され得る。別の実施形態においては、非偏光部は貫通孔（代表的には、偏光子を厚み方向に貫通する貫通孔）である。貫通孔は、例えば、機械的打ち抜き（例えば、パンチング、彫刻刃打抜き、プロッター、ウォータージェット）または偏光子中間体の所定部分の除去（例えば、レーザーアブレーションまたは化学的溶解）により形成され得る。 In one embodiment, the non-polarizing part is a decoloring part formed by decoloring a predetermined part of the polarizer intermediate. The decoloring part can be formed by, for example, laser irradiation or chemical treatment (for example, acid treatment, alkali treatment, or a combination thereof). In another embodiment, the non-polarizing part is a through hole (typically, a through hole penetrating the polarizer in the thickness direction). The through hole can be formed, for example, by mechanical punching (eg, punching, engraving blade punching, plotter, water jet) or removal of a predetermined portion of the polarizer intermediate (eg, laser ablation or chemical dissolution).
　上記非偏光部は、色調および／または光透過率に基づいて、非偏光部以外の部分と外観上の区別ができ、上記検出手段により検出され得る。したがって、本発明の製造方法において、非偏光部は、上記の被検出部１１としての機能を奏する。 The non-polarizing portion can be distinguished from the portion other than the non-polarizing portion in appearance based on the color tone and / or light transmittance, and can be detected by the detecting means. Therefore, in the manufacturing method of the present invention, the non-polarizing part functions as the detected part 11 described above.
　本発明の製造方法は、位相差フィルム、偏光子フィルム等の光学フィルムを製造する際に好適に用いられる。特に、スマートフォン等の携帯電話、ノート型ＰＣ、タブレットＰＣ等のカメラ付き画像表示装置（液晶表示装置、有機ＥＬデバイス）に備えられる偏光子を製造する際に好適に用いられる。 The production method of the present invention is suitably used when producing optical films such as retardation films and polarizer films. In particular, it is suitably used for manufacturing a polarizer provided in an image display device with a camera (liquid crystal display device, organic EL device) such as a mobile phone such as a smartphone, a notebook PC, or a tablet PC.
　１０　　　　　　フィルム片
　１１　　　　　　被検出部（機能部）
　１２　　　　　　切り抜き線
　２０　　　　　　切り抜き手段（トムソン刃）
　３０　　　　　　検出手段
　１００　　　　　帯状フィルム 10 Film piece 11 Detected part (functional part)
12 Cutting line 20 Cutting means (Thomson blade)
30 detection means 100 belt-like film

Claims (5)

  1. 　幅方向に２個以上および長さ方向に２個以上の被検出部を有する帯状フィルムを、所定の長さ方向送りピッチごとに、該帯状フィルムの幅方向の一方から他方へ向けて、順次切り抜くことを含み、
    　該帯状フィルムを切り抜く際、該被検出部の位置を検出し、検出された該被検出部の位置を基準として切り抜き線の位置決めを行い、検出された該被検出部を有するフィルム片を１枚ずつ得ることを含む、
    　光学フィルムの製造方法。     A strip-shaped film having two or more in the width direction and two or more to-be-detected portions in the length direction is sequentially cut out from one side to the other in the width direction of the strip film at every predetermined length direction feed pitch. Including
    When cutting out the strip-like film, the position of the detected portion is detected, the cut line is positioned with reference to the detected position of the detected portion, and one piece of film having the detected portion is detected. Including getting one by one,
    Manufacturing method of optical film.
  2. 　カメラを用いて、前記被検出部の位置を検出する、請求項１に記載の光学フィルムの製造方法。 The method for producing an optical film according to claim 1, wherein the position of the detected portion is detected using a camera.
  3. 　幅方向において前記帯状フィルムを切り抜く前に、該帯状フィルムの幅方向の片側端辺を検出することと、
    　該帯状フィルムを切り抜く際、切り抜き手段を、該帯状フィルムの幅方向の一方から他方へ向けて、移動させることとを含み、
    　検出された該片側端辺を基準に、該切り抜き手段の移動方向を決定する、
    　請求項１または２に記載の光学フィルムの製造方法。     Before cutting out the strip film in the width direction, detecting one side edge of the strip film in the width direction; and
    Moving the cutting means from one to the other in the width direction of the band-shaped film when cutting the band-shaped film,
    Determine the moving direction of the clipping means based on the detected one side edge,
    The manufacturing method of the optical film of Claim 1 or 2.
  4. 　帯状フィルムを所定の長さ方向送りピッチで搬送する搬送手段と、
    　該帯状フィルムが有する被検出部を検出する検出手段と、
    　該帯状フィルムの幅方向の一方から他方へ向けて移動し、かつ、検出された該被検出部の位置を基準として切り抜き線の位置決めを行う切り抜き手段とを含む、
    　光学フィルムの製造装置。     Conveying means for conveying the belt-like film at a predetermined length direction feed pitch;
    Detecting means for detecting a detected portion of the strip film;
    Cutting means for moving the strip-shaped film from one side to the other in the width direction and positioning the cut line with reference to the detected position of the detected part;
    Optical film manufacturing equipment.
  5. 　前記検出手段が、前記帯状フィルムの幅方向の片側端辺をさらに検出し、
    　検出された該片側端辺を基準に、前記切り抜き手段の移動方向が決定される、
    　請求項４に記載の製造装置。     The detecting means further detects one side edge in the width direction of the belt-like film;
    Based on the detected one side edge, the moving direction of the clipping means is determined.
    The manufacturing apparatus according to claim 4.
PCT/JP2015/083040 2014-12-02 2015-11-25 Method and device for producing optical film WO2016088619A1 (en)

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