WO2010021025A1 - 光学フィルムの切断方法およびこれを用いた装置 - Google Patents
光学フィルムの切断方法およびこれを用いた装置 Download PDFInfo
- Publication number
- WO2010021025A1 WO2010021025A1 PCT/JP2008/064746 JP2008064746W WO2010021025A1 WO 2010021025 A1 WO2010021025 A1 WO 2010021025A1 JP 2008064746 W JP2008064746 W JP 2008064746W WO 2010021025 A1 WO2010021025 A1 WO 2010021025A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical film
- cutting
- roller
- film
- polarizing film
- Prior art date
Links
- 239000012788 optical film Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims description 25
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims description 24
- 239000010408 film Substances 0.000 abstract description 94
- 230000010287 polarization Effects 0.000 abstract description 7
- 230000003111 delayed effect Effects 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 description 6
- 230000007723 transport mechanism Effects 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/083—Devices involving movement of the workpiece in at least one axial direction
- B23K26/0838—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt
- B23K26/0846—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt for moving elongated workpieces longitudinally, e.g. wire or strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/02—Advancing webs by friction roller
- B65H20/04—Advancing webs by friction roller to effect step-by-step advancement of web
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/14—Roller pairs
- B65H2404/144—Roller pairs with relative movement of the rollers to / from each other
- B65H2404/1442—Tripping arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/175—Plastic
- B65H2701/1752—Polymer film
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/04—Processes
- Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
- Y10T83/0419—By distorting within elastic limit
- Y10T83/0424—By stretching
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/323—With means to stretch work temporarily
Definitions
- the present invention relates to a method of cutting an optical film capable of accurately cutting an optical film such as a polarizing film to be bonded to a substrate such as a liquid crystal panel, a brightness enhancement film, and a retardation film, and an apparatus using the same.
- a conventional method of cutting a film into a predetermined length is performed as follows.
- a first nip roller on the upstream side and a second nip roller on the downstream side are disposed, and a medium to be cut coated with a long laminate film is continuously supplied between both nip rollers.
- the laminated film is gripped by both nip rollers, and the laminated film is cut by a cutter disposed within the interval (see Patent Document 1).
- the conventional apparatus has the following problems. That is, even when the film is gripped by the nip roller, the film is often not sufficiently tensioned between the two gripping rolls.
- a film which is not sufficiently tensioned has a problem that the cutting length changes because the film is slackened due to wrinkles or waves.
- the focal depth of the laser with respect to the cut portion is also deviated, so the beam diameter widens and the film is unnecessarily burned off or a polarizing film melted by heat during cutting is smoke.
- a large amount of dust is generated, and there is also a problem that components contained in the smoke become contaminants and adhere to the film.
- This invention is made in view of such a situation, and makes it a main purpose to provide the cutting method of an optical film which can perform cutting of an optical film accurately, and the device using the same.
- the present invention has the following configuration in order to achieve the above object.
- the method of the present invention is a method of cutting an optical film, which cuts the optical film into sheets.
- the axis of the upper roller of the lower roller is at least one of the upper and lower gripping rollers Grasping in a state of being deployed offset in a direction away from the cutting site with respect to the axial core, The optical film in a state in which both ends are gripped is cut in the width direction.
- the axis of the upper roller constituting the gripping roller is disposed in a direction away from the cutting portion with respect to the shaft of the lower roller, when gripping the polarizing film with this gripping roller , The polarizing film is drawn outward from the cutting site. That is, tension is applied to the polarizing film located between both gripping rollers. Therefore, since the polarizing film is cut without slack, the accuracy of the cutting length can be maintained.
- the polarizing film is cut with, for example, a laser, since the focal depth of the laser does not shift, adhesion of contaminants to the polarizing film due to the influence of unnecessary burn-out and generation of smoke can be suppressed.
- the other end of the optical film is held by the holding roller whose axis is offset.
- the cutting of the optical film is preferably performed by a laser.
- this invention takes the following structures in order to achieve the said objective.
- supply means for supplying the band-like optical film;
- the axial center of the upper roller moves away from the cutting site with respect to the axial center of the lower roller
- a tension applying mechanism configured to be shifted in the direction;
- the cutting means is preferably a laser device, and more preferably, provided with a suction table which is disposed opposite to the laser device with the optical film interposed therebetween and which holds the optical film by suction.
- the axial center of the upper roller constituting at least one of the holding rollers disposed among the holding rollers disposed across the cutting portion of the polarizing film
- the optical member is not particularly limited as long as it is a strip-shaped functional film having flexibility such as a polarizing film, a retardation film, a brightness enhancement film, etc.
- the polarizing film The case where is used will be described as an example.
- FIG. 1 shows a schematic configuration of an optical film cutting apparatus including the steps of performing a method of cutting an optical film according to the present invention and stacking and storing the cut optical film so that it can be carried out.
- the apparatus of this embodiment includes a film supply unit 1 for feeding out and supplying a polarizing film F, a cutting mechanism 3 for cutting the polarizing film F into a predetermined length in the carrying direction, a carrying mechanism 4 for carrying the polarizing film F after cutting, and a carrying path It comprises the carrying out mechanism 6 etc. which carry out the polarizing film F stacked and stored at the end of the unit to the next step.
- the film supply unit 1 corresponds to the supply means of the present invention.
- a bobbin 8 is loaded with a raw fabric roll 7 in which a band-like sheet obtained by slitting a wide polarizing film F into a predetermined dimension width is rolled.
- the bobbin 8 is coupled to a drive device such as a motor.
- a dancer roller D is disposed between the film supply unit 1 and the cutting mechanism 3.
- the dancer roller D cuts the polarization film F suctioned and held by the suction table 9 of the cutting mechanism 3 with the laser device 10 and releases the suction amount of the polarization film F supplied from the film supply unit 1 while releasing the suction holding. Absorb.
- the cutting mechanism 3 includes an adsorption table 9 for adsorbing and holding the polarizing film F from the back surface, the laser device 10, and a pair of gripping rollers 11 and 12 for gripping the polarizing film F on the upstream side and the downstream side across the laser device 10.
- the laser device 10 corresponds to the cutting means of the present invention.
- the suction groove 14 orthogonal to the conveyance direction of the polarizing film F is formed of the inner side wall which both holding block 9a, 9b opposes. That is, the suction groove 14 serves as a scanning path of the laser irradiated from the laser device 10.
- the gripping rollers 11 and 12 are connected and fixed to a driving mechanism such as a motor, and the lower driving rollers 11 a and 12 a configured to be able to feed the polarizing film F;
- the roller 11b and the roller 12b move up and down to an operating position where the roller 11 and the driving roller cooperate with each other to grip the roller.
- the rollers 11 b and 12 b are raised and lowered by an air cylinder 20 connected via a rod 19 to a bracket 18 screwed to the central axis of the roller.
- the gripping roller 12 disposed on the downstream side is disposed in a state where the central axis C thereof is displaced to the downstream side with respect to the central axis L of the driving roller 12a.
- the gripping rollers 11 and 12 are 30 mm in diameter coated with an elastic material such as urethane having a hardness of about 30 to 90 on the surface of metal, and the central axis L of the driving roller 12a on the downstream side.
- the shift amount G of the central axis C of the roller 12b with respect to the above is set to 3 mm.
- the amount of deviation G is appropriately set and changed in accordance with the diameter and material of the holding rollers 11 and 12 to be used, and the material and thickness of the polarizing film F to be used. For example, it is set in the range of 1 to 5 mm.
- the conveyance mechanism 4 is continuously disposed as a conveyance conveyor provided with a conveyance belt for placing and conveying the polarizing film F fed from the holding roller 12.
- the unloading mechanism 6 is configured by a roller conveyor continuously disposed below the end of the transport mechanism 4.
- a tray 15 for collecting the polarizing film F falling from the transport mechanism 4 is provided at the start end portion of the unloading mechanism 6.
- the control unit 16 generally controls the above-described mechanisms. The control unit 16 will be described later in the description of the operation of the device.
- the original film roll 7 of the polarizing film F to be used is loaded into the film supply unit 1.
- the operator performs initial setting using the operation panel or the like.
- the cut length, thickness, supply speed, laser output and focal depth of the polarizing film F are set.
- the thickness of the optical film F is 310 ⁇ m, and the depth of focus is set to ⁇ 0.5 mm.
- the polarizing film F is conveyed to the cutting mechanism 3.
- the control unit 16 controls the both gripping rollers 11 and 12 to grip the polarizing film F at both ends of the holding table.
- the air cylinder 20 connected to both the rollers 11b and 12b is synchronized, and as shown in FIG. 3, the two rollers 11b and 12b are simultaneously lowered.
- the roller 12b on the downstream side is offset in the direction (downstream side) in which the central axis C is away from the cutting site with respect to the central axis L of the drive roller 12a (downstream side). It will be located below compared with the grip point of.
- the timing of the gripping roller 12 is I'll be late.
- the front end side of the polarizing film F in the free state on the downstream side is fixed by the gripping roller 11 on the upstream side across the cutting site, as shown by the arrow in FIG. It is drawn in the direction to go away.
- tension is applied to the polarizing film F between the two gripping rollers 11 and 12 to remove slack.
- control unit 16 operates the suction device 13 in this state to cause the holding table 9 to adsorb and hold the polarizing film F.
- control unit 16 controls the operation of the dancer roller D so that the polarizing film F continuously supplied from the film supply unit 1 is not fed out to the dancer roller D and thereafter.
- the polarizing film F held by suction on the holding table 9 is cut in the width direction by the laser device 10 along the suction groove 14.
- the control unit 16 controls the dancer roller D so as to feed the polarizing film F to the cutting mechanism 3.
- a tray 15 is installed, and the polarizing film F is stacked and stored in the tray 15.
- control unit 16 When a predetermined number of polarizing films F are stacked on the tray 15 by repeating the above series of operations, the control unit 16 operates the unloading mechanism 6 to unload the polarizing films F in the next step.
- the central axis C of the roller 12b constituting the gripping roller 12 is disposed offset in a direction away from the cutting portion than the central axis L of the drive roller 12a.
- the gripping timing of the polarizing film F by the downstream gripping roller 12 is delayed.
- the gripping point of the polarizing film by the gripping roller 12 on the downstream side becomes opposite curved portions of the two rollers 12a and 12b shifted from the vertex of the driving roller 12a and the lowermost point of the roller 12b.
- the polarizing film F is gripped by the downstream gripping roller 12 while being pulled in a direction (downstream side) away from the cutting site.
- a tension is applied to the polarizing film F between the two gripping rollers 11 and 12 to such an extent that there is no slack, and it is cut by the laser in that state.
- the polarizing film F is cut without slack, the accuracy of the cutting length can be maintained.
- the focal depth of the laser does not shift, the generation of smoke due to the focal depth shift can be suppressed unless the polarizing film F is burnt out unnecessarily.
- the center axis of the roller 11b on the upper side of the gripping roller 11 on the upstream side is also disposed in a direction (upstream side) away from the cutting site with respect to the center axis of the driving roller 11a. Good.
- the descent of both the rollers 11 b and 12 b may be simultaneous or one of them may be descent first.
- the above-described apparatus utilizes the laser device for cutting the polarizing film F, it can also be used for a configuration in which it is cut by a cutter blade or the like.
- the combination of the pair of upper and lower rollers constituting the gripping rollers 11 and 12 is not limited to the above embodiment, and may be another combination.
- the drive rollers 11a and 12a may be made of metal, and the upper rollers 11b and 12b may be combined as elastic rollers.
- the present invention is suitable for accurately cutting an optical film.
Abstract
Description
搬送されてくる帯状の前記光学フィルムの切断部位を挟んでその搬送方向の上流側と下流側に配備した上下一対の把持ローラのうち、少なくとも一方の把持ローラについて上部ローラの軸芯が下部ローラの軸芯に対して切断部位から遠ざかる方向にずらして配備された状態で把持し、
両端を把持された状態の前記光学フィルムを幅方向に切断することを特徴とする。
前記供給手段から搬送される光学フィルムを上流側と下流側に配備した上下一対の把持ローラのうち、少なくとも一方の把持ローラについて上部ローラの軸芯が下部ローラの軸芯に対して切断部位から遠ざかる方向にずらして構成されたテンション付与機構と、
前記テンション付与機構によって搬送方向にテンションが付与された光学フィルムを切断する切断手段と、
を備えたことを特徴とする。
3 … 切断機構
4 … 搬送機構
6 … 搬出機構
9 … 吸着テーブル
11 … 把持ローラ
12 … 把持ローラ
16 … 制御部
F … 偏光フィルム
Claims (7)
- 光学フィルムを枚葉体に切断する光学フィルムの切断方法であって、
搬送されてくる帯状の前記光学フィルムの切断部位を挟んでその搬送方向の上流側と下流側に配備した上下一対の把持ローラのうち、少なくとも一方の把持ローラについて上部ローラの軸芯が下部ローラの軸芯に対して切断部位から遠ざかる方向にずらして配備された状態で把持し、
両端を把持された状態の前記光学フィルムを幅方向に切断する
ことを特徴とする光学フィルムの切断方法。 - 請求項1に記載の光学フィルムの切断方法において、
前記光学フィルムを挟んで上下ローラが垂直対向にある把持ローラによって光学フィルムの一端を把持した後に、軸芯のずれた把持ローラによって光学フィルムの他端を把持する
ことを特徴とする光学フィルムの切断方法。 - 請求項1または請求項2に記載の光学フィルムの切断方法において、
前記光学フィルムの切断は、レーザにより行う
ことを特徴とする光学フィルムの切断方法。 - 請求項3に記載の光学フィルムの切断方法において、
前記光学フィルムの切断部位を吸着保持した後、当該切断部位を挟んで両端を把持し、切断部位を吸着しながらレーザで切断する
ことを特徴とする光学フィルムの切断方法。 - 光学フィルムを枚葉体に切断する光学フィルムの切断装置であって、
帯状の前記光学フィルムを供給する供給手段と、
前記供給手段から搬送される光学フィルムを上流側と下流側に配備した上下一対の把持ローラのうち、少なくとも一方の把持ローラについて上部ローラの軸芯が下部ローラの軸芯に対して切断部位から遠ざかる方向にずらして構成されたテンション付与機構と、
前記テンション付与機構によって搬送方向にテンションが付与された光学フィルムを切断する切断手段と、
を備えたことを特徴とする光学フィルムの切断装置。 - 請求項5に記載の光学フィルムの切断装置において、
前記切断手段は、レーザ装置である
ことを特徴とする光学フィルムの切断装置。 - 請求項6に記載の光学フィルムの切断装置において、
前記光学フィルムを挟んで前記レーザ装置に対向配備し、当該光学フィルムを吸着保持する吸着テーブルを備えた
ことを特徴とする光学フィルムの切断装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020107011607A KR101431873B1 (ko) | 2008-08-19 | 2008-08-19 | 광학 필름의 절단 방법 및 이를 이용한 장치 |
US12/673,502 US8524536B2 (en) | 2008-08-19 | 2008-08-19 | Optical film cutting method and apparatus using the same |
PCT/JP2008/064746 WO2010021025A1 (ja) | 2008-08-19 | 2008-08-19 | 光学フィルムの切断方法およびこれを用いた装置 |
CN200880019330.8A CN101827681B (zh) | 2008-08-19 | 2008-08-19 | 光学薄膜的切断方法以及采用该切断方法的装置 |
JP2009537431A JP5405310B2 (ja) | 2008-08-19 | 2008-08-19 | 光学フィルムの切断方法およびこれを用いた装置 |
TW097132261A TWI474908B (zh) | 2008-08-19 | 2008-08-22 | A method for cutting an optical film and a device using the same |
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PCT/JP2008/064746 WO2010021025A1 (ja) | 2008-08-19 | 2008-08-19 | 光学フィルムの切断方法およびこれを用いた装置 |
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WO2010021025A1 true WO2010021025A1 (ja) | 2010-02-25 |
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US (1) | US8524536B2 (ja) |
JP (1) | JP5405310B2 (ja) |
KR (1) | KR101431873B1 (ja) |
CN (1) | CN101827681B (ja) |
TW (1) | TWI474908B (ja) |
WO (1) | WO2010021025A1 (ja) |
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JP2021053798A (ja) * | 2019-09-04 | 2021-04-08 | 志聖工業股▲ふん▼有限公司 | フィルム切断装置、フィルム切断方法、ウェハラミネーター、並びにウェハのラミネート方法 |
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Also Published As
Publication number | Publication date |
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JPWO2010021025A1 (ja) | 2012-01-26 |
KR20110068947A (ko) | 2011-06-22 |
TWI474908B (zh) | 2015-03-01 |
CN101827681B (zh) | 2014-12-10 |
US8524536B2 (en) | 2013-09-03 |
US20110203430A1 (en) | 2011-08-25 |
KR101431873B1 (ko) | 2014-08-26 |
CN101827681A (zh) | 2010-09-08 |
JP5405310B2 (ja) | 2014-02-05 |
TW201008735A (en) | 2010-03-01 |
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