WO2019026556A1 - Method for producing glass film - Google Patents

Method for producing glass film Download PDF

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Publication number
WO2019026556A1
WO2019026556A1 PCT/JP2018/025912 JP2018025912W WO2019026556A1 WO 2019026556 A1 WO2019026556 A1 WO 2019026556A1 JP 2018025912 W JP2018025912 W JP 2018025912W WO 2019026556 A1 WO2019026556 A1 WO 2019026556A1
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WO
WIPO (PCT)
Prior art keywords
glass film
protective tape
glass
conveyance
disposed
Prior art date
Application number
PCT/JP2018/025912
Other languages
French (fr)
Japanese (ja)
Inventor
義徳 長谷川
森　弘樹
森　浩一
修二 秋山
弥浩 植村
松本　直之
Original Assignee
日本電気硝子株式会社
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.)
Filing date
Publication date
Application filed by 日本電気硝子株式会社 filed Critical 日本電気硝子株式会社
Priority to KR1020197027787A priority Critical patent/KR102475068B1/en
Priority to CN201880041993.3A priority patent/CN110785384B/en
Priority to CN202210708041.0A priority patent/CN115043579A/en
Publication of WO2019026556A1 publication Critical patent/WO2019026556A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
    • C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B65H18/103—Reel-to-reel type web winding and unwinding mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/34—Apparatus for taking-out curl from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H39/00—Associating, collating, or gathering articles or webs
    • B65H39/16—Associating two or more webs
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
    • C03B33/037—Controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/08—Severing cooled glass by fusing, i.e. by melting through the glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/08—Severing cooled glass by fusing, i.e. by melting through the glass
    • C03B33/082—Severing cooled glass by fusing, i.e. by melting through the glass using a focussed radiation beam, e.g. laser
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
    • C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
    • C03B35/142—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by travelling transporting tables
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
    • C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
    • C03B35/22—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands on a fluid support bed, e.g. on molten metal
    • C03B35/24—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands on a fluid support bed, e.g. on molten metal on a gas support bed
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B40/00—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it

Definitions

  • the present invention relates to a method of producing a glass film.
  • a downdraw method such as an overflow downdraw method, a slot downdraw method, a redraw method, or a float method is used.
  • the glass film may be conveyed in the lateral direction by the horizontal conveyance unit.
  • the glass film may be conveyed by the side conveyance part in the cross direction.
  • a glass film is subjected to manufacturing related processing such as cutting (see, for example, Patent Document 1).
  • a glass film is a brittle material and is easily damaged by impact or deformation. Therefore, a glass film may be reinforced by sticking a protective tape along a longitudinal direction to a glass film.
  • This invention makes it a technical subject to suppress reliably the adhesion failure of the protective tape by the wrinkles generate
  • the present invention devised to solve the above-mentioned problems is a method for producing a glass film, which is a method for producing a glass film, wherein the glass film is conveyed in the lateral direction by the lateral conveyance unit and attached on the conveyance path of the lateral conveyance unit
  • the step of sticking a protective tape to the glass film in the longitudinal direction in the part, and before sticking the protective tape to the glass film in the sticking part, the crease of the glass film And a step of extending.
  • the weir extension part arrange
  • the “lateral direction” includes not only the horizontal direction but also a direction slightly inclined from the horizontal direction (the same applies hereinafter).
  • the eyebrow extension has a rod-like body disposed on the upstream side of the sticking position of the protective tape by the sticking portion and extending in a direction intersecting the conveyance direction of the glass film, and the rod-like body is a glass film Is preferably lifted from the lower surface side.
  • the wrinkles generated in the glass film are stretched by the action of the lifting force when being lifted from the lower surface side by the rod-like body. Therefore, among the wrinkles generated in the glass film, irregular wrinkles having various orientations are efficiently stretched over a wide range.
  • the “rod-like body” includes not only a solid rod-like body but also a hollow (pipe-like) rod-like body (the same applies hereinafter).
  • the eyebrow extension has a support that is disposed from the upstream side to the downstream side of the attachment position of the protective tape by the attachment section and supports the glass film from the lower surface side, and the width direction of the glass film It is preferable to allow both ends to protrude from both ends in the width direction of the support and to float.
  • the glass film is subjected to tension directed to the both widthwise end sides by the weight of the portion protruding from the support. Therefore, it is effective in extending the wrinkles which generate
  • the width direction both ends of a glass film may become thick compared with the width direction center part.
  • both widthwise end portions and the widthwise center portion are supported on the same plane, the glass film tends to deform following the plane. In this process, complicated deformation occurs due to the thickness difference between the widthwise end portions and the widthwise center portion of the glass film, and wrinkles are easily generated in the glass film. Therefore, as described above, it is preferable that both widthwise end portions protrude and float to the outside of the support to prevent generation of wrinkles due to a difference in thickness between the widthwise central portion and both widthwise ends. And in said structure, since a support body is arrange
  • the glass film may be cut along the longitudinal direction by the cutting part disposed in the lateral conveyance part.
  • the protective tape is already attached to the glass film, so that breakage of the glass film at the time of cutting can be reliably suppressed.
  • the glass film to which the protective tape is attached may be wound up and collected by a winding roller. In this way, it is possible to manufacture a glass roll formed by winding a glass film with a protective tape.
  • a winding roller is arrange
  • the protective sheet supplied from the upper surface side of the glass film is wound around the winding roller prior to the glass film, and then the protective sheet is superimposed on the surface to which the protective tape of the glass film is attached.
  • the glass film and the protective sheet are wound up and collected by a winding roller. In this way, the glass film is wrapped around the winding roller while sandwiching the glass film between a part of the protective sheet previously wound around the winding roller and a part of the remaining protective sheet that is continuous with it. It can be wound and collected.
  • the apparatus for manufacturing a glass film used in the present manufacturing method converts the forming portion 1 for forming the glass film G, and the traveling direction of the glass film G from the longitudinal direction to the lateral direction.
  • a direction change unit 2 a lateral conveyance unit 3 for conveying the glass film G in the lateral direction after the direction change, and a crease extension unit 4 for extending wrinkles generated on the glass film G being conveyed in the lateral direction by the lateral conveyance unit 3
  • the cutting unit 6 includes a winding roller 7 that winds and collects the product portion Ga of the glass film G from which the non-product portion Gb is cut and removed by the cutting unit 6.
  • the non-product portion Gb is formed at both ends in the width direction (direction orthogonal to the transport direction) of the glass film G.
  • the non-product portion Gb may include a portion called an ear portion having a thickness larger than that of the product portion Ga.
  • the thickness of the product portion Ga is preferably 300 ⁇ m or less, more preferably 200 ⁇ m or less, and still more preferably 100 ⁇ m or less.
  • the forming unit 1 executes an overflow downdraw method.
  • the molten glass Gm is supplied to the formed body 8 having a bowl-like cross-sectional shape, and the molten glass Gm overflowing from the top of the formed body 8 on both sides is fused at the lower end thereof and allowed to flow down.
  • a plate-like glass film G is continuously formed from the molten glass Gm.
  • the glass film G formed by the formed body 8 is annealed (annealed) in the lower region of the formed body 8 and further cooled to around room temperature. During this time, the glass film G is guided downward in a state of being sandwiched by a plurality of rollers (not shown) from both the front and back sides.
  • the direction changing unit 2 is disposed below the forming unit 1.
  • a plurality of guide rollers 9 as a guide member for guiding the direction conversion of the glass film G are arranged in a curved shape in the direction conversion unit 2.
  • the guide rollers 9 contact the back surface of the glass film G.
  • the guide roller 9 is divided into three, that is, the center in the width direction and both ends in the width direction.
  • the glass film G is guided by the guide rollers 9 in the width direction central portion and both widthwise ends until the formation of the glass film G is stabilized immediately after the formation of the glass film G is started, and the formation of the glass film G is stable Thereafter, the guide roller 9 at the central portion in the width direction retracts from the guide position, and the glass film G is guided only by the guide rollers 9 at the both end portions in the width direction.
  • the configuration of the direction conversion unit 2 is not particularly limited as long as it can convert the traveling direction of the glass film G.
  • the entire width of the glass film G may always be guided by a roller.
  • a configuration using a floater or the like for injecting a gas may be used.
  • a lateral conveyance unit 3 is disposed forward (downstream side) in the traveling direction of the direction conversion unit 2.
  • the lateral conveyance unit 3 includes a belt conveyor 10, a floater 11, and a conveyance table 12 which are disposed at intervals in the conveyance direction from the upstream side.
  • the belt conveyor 10 is a drive conveyor, and contacts and supports the glass film G.
  • the floater 11 sprays gas or the like on the back surface side of the glass film G to support the glass film G in a noncontact manner.
  • the floater 11 stops the conveyance of the glass film G to the downstream side, and guides the glass film G having a defect downward. And can be destroyed.
  • the floater 11 may be omitted or may be replaced by a belt conveyor.
  • the horizontal conveyance unit 3 is configured to convey the glass film G in the horizontal direction, but is inclined at an angle of less than 45 ° (preferably, less than 30 °) with respect to the horizontal direction. It may be
  • a weir extending unit 4 is disposed in a stationary manner.
  • a sheet for conveyance S1 is interposed between the crease-extending portion 4 and the glass film G.
  • the lower surface of the sheet S1 for conveyance is made slidable on the crease 4 and the upper surface is a conveyance support surface for conveying and supporting the glass film G. Since the glass film G is conveyed by the movement of the conveyance sheet S1, the conveyance base 12 is a stop which does not directly apply the conveyance force to the glass film G.
  • the conveyance sheet S1 is drawn upward from the supply roller 13 disposed below the conveyance table 12, passes between the crease-extending part 4 and the glass film G at the upper part of the conveyance table 12, and the crease-extending part It is sent downward from the downstream end of 4. At this time, the transport sheet S1 is sent along a closed loop or an open loop trajectory by a drive unit (not shown).
  • the transport sheet S1 is preferably made of resin (in particular, foamed resin).
  • the sticking part 5 is disposed on the upstream side above the transport table 12 and the cutting part 6 is disposed on the downstream side.
  • the sticking unit 5 includes a supply roller 14 formed by winding the protective tape T, one or more guide rollers 15 for guiding the protective tape T fed from the supply roller 14, and a protection guided by the guide roller 15. And a pressing roller 16 for pressing the tape T against the glass film G.
  • the pressure roller 16 rolls in the direction of arrow a (the direction along the conveyance direction of the glass film G) in a state of being in contact with the upper surface of the conveyed glass film G via the protective tape T (see FIG. 3). Accordingly, in the present embodiment, the contact position of the pressure roller 16 and the glass film G is the sticking position of the protective tape T.
  • the protective tape T has an ultraviolet-curable adhesive surface on the surface (lower surface) in contact with the glass film G. Ultraviolet rays are irradiated from the ultraviolet irradiation device (not shown) to the adhesive surface of the protective tape T, and the protective tape T adheres to the glass film G.
  • the adhesive used for the adhesive surface of the protective tape T is not limited to the ultraviolet curing type, and other types of adhesives such as a thermosetting type and a pressure sensitive type may be used. Further, a pressure sensitive adhesive such as an acrylic pressure sensitive adhesive may be used. It is preferable that the sheet-like base material holding the adhesive surface of the protective tape T is made of resin.
  • the protective tape T is attached to both widthwise end portions of the product portion Ga along the transport direction (longitudinal direction of the glass film G).
  • the protective tape T is attached slightly inward of both widthwise ends of the product portion Ga so as not to interfere with the cutting process by the cutting portion 6, and is formed at the boundary between the product portion Ga and the non-product portion Gb. It is not stuck on line A.
  • region of the protective tape T in the glass film G is not specifically limited.
  • the protective tape T may be attached to the center in the width direction of the product portion Ga, or may be attached to the entire width of the glass film G.
  • the cutting part 6 cuts the non-product part Gb of the glass film G along the transport direction by bending stress cutting, thermal stress cutting (for example, laser cutting), melting (for example, laser cutting) or the like.
  • the cut non-product part Gb is discarded after being separated from the product part Ga in the vertical direction and / or the width direction (left and right).
  • FIG. 1 exemplifies the case where the non-product portion Gb is sent obliquely downward to the front in the transport direction and discarded.
  • a winding roller 7 is disposed downstream of the lateral conveyance unit 3.
  • the winding roller 7 winds and collects the product portion Ga on which the protective tape T is attached to both ends in the width direction.
  • the winding roller 7 is disposed on the lower surface side of the product portion Ga, and winds and collects the product portion Ga such that the surface to which the protective tape T is attached is on the outside.
  • a supply roller 17 formed by winding a protective sheet S is disposed, and the protective sheet S fed out from the supply roller 17 is superimposed on the upper surface of the product portion Ga with the protective tape T.
  • the protective sheet S is preferably made of a resin such as a polyethylene terephthalate film (PET film).
  • the protective sheet S is previously wound around the winding roller 7 earlier than the glass film G.
  • the leading end (the winding start side) of the protective sheet S is located above the leading end (the winding start side) of the protective sheet S and is more than the leading end of the glass film G wound around the winding roller 7
  • it is wound around the winding roller 7 once or more before.
  • the product portion Ga is wound around the product portion Ga while the product portion Ga is sandwiched between a part of the protective sheet S wound around the winding roller 7 in advance and a part of the remaining protective sheet S. It can be wound around and collected.
  • the tension acting on the product portion Ga can be made smaller than the tension acting on the protective sheet S.
  • the tension applied to the product portion Ga is made substantially zero by slackening the product portion Ga so that the product portion Ga moves on a concave-curved trajectory just before reaching the winding roller 7. May be
  • the eyebrow stretching portion 4 is disposed on the upstream side of the sticking position (position corresponding to the pressing roller 16) of the protective tape T by the sticking portion 5 to the glass film G, and intersects the transport direction It comprises a rod-like body 18 extending in the direction of movement and a plate 19 which is disposed from the upstream side to the downstream side of the bonding position and has a rectangular plan view.
  • the fixed plate 19 is a support that supports the glass film G from below in a region ranging from the upstream side to the downstream side of the bonding position.
  • Both ends in the width direction of the sheet S1 for conveyance are protruded from both ends in the width direction of the glass film G, and both ends in the width direction of the conveyance table 12 are extracted from both ends in the width direction of the sheet S1 for conveyance.
  • both ends in the width direction of the glass film G protrude from both ends in the longitudinal direction of the rod-like body 18, but the opposite ends of the glass film G in the longitudinal direction of the rod-like body 18 It may protrude from both widthwise ends.
  • seat S1 for conveyance protrude from the width direction both ends of glass film G in the example of illustration of the same figure
  • the width direction both ends of glass film G conversely to this, the sheet
  • the rod-shaped body 18 is disposed at the upstream end of the carrier table 12 so that the longitudinal direction is parallel to the width direction.
  • the rod-like body 18 is in a non-rotatable state by being fixed.
  • the rod-like body 18 has a circular shape in cross section perpendicular to the longitudinal direction.
  • the cross-sectional shape of the rod-like body 18 is not limited to a circle, and may be, for example, an ellipse or a polygon, and the lower surface portion may be a flat surface or the like. That is, as for the cross-sectional shape of the rod-shaped body 18, it is sufficient if at least the surface (upper surface) in contact with the lower surface side of the glass film G is convex.
  • the rod-like body 18 may be configured to rotate in the direction of arrow b (the direction along the conveyance direction of the glass film G).
  • the rod-like body 18 may be slightly inclined with respect to the width direction.
  • the upper end position of the rod-like body 18 is higher than the upper end position of the plate 19.
  • the difference dimension h between the heights 18 and 19 is preferably 1 mm to 10 mm, more preferably 1 to 3 mm (2 mm in the present embodiment).
  • the fixed plate 19 is fixedly disposed, for example, on the upper surface portion of the transport table 12, and the upper surface is flat.
  • Product part Ga of glass film G will be in the state where it was supported from the upper part by the upper surface of plate 19 via conveyance sheet S1.
  • the ear portion Gx included in the non-product portion Gb of the glass film G protrudes from both ends in the width direction on the upper surface of the plate 19 and floats.
  • the upper surface of the fixed plate 19 is not limited to be flat, and may be gently curved so that, for example, the widthwise center portion is higher than both widthwise ends.
  • the fixed plate 19 may be omitted and the carrier 12 may be used as a support.
  • the product portion Ga of the glass film G is supported from below by the upper surface of the transport table 12 via the transport sheet S1, and the ear portion included in the non-product portion Gb of the glass film G It is preferable that Gx floats out from both ends in the width direction on the upper surface of the transfer table 12 and floats.
  • the manufacturing method of a glass film is implemented by the manufacturing apparatus provided with the above structures, the glass film G which reached the horizontal conveyance part 3 through the direction conversion part 2 from the shaping
  • the manufactured glass roll may be conveyed to a processing factory.
  • the processing factory for example, the product portion Ga is fed from a glass roll, and an electrode or the like is formed on the widthwise central portion of the product portion Ga to which the protective tape T is not adhered.
  • the protective tape T attached to both ends in the width direction of the product portion Ga is peeled off from the product portion Ga or cut and removed together with the glass after the formation of the electrodes and the like is completed.
  • the above embodiment has described the case where the glass film continuously formed by the forming unit is supplied to the lateral conveyance unit, the glass continuously drawn from the supply roller (glass roll) on which the glass film is wound is described.
  • the film may be supplied to the lateral conveyance unit.
  • the manufacturing process is performed in a roll-to-roll method.
  • the product portion is wound up and collected so that the surface to which the protective tape is attached is on the outer side (the outer peripheral surface side) has been described, but the surface to which the protective tape is attached is on the inside (internal The product portion may be wound and collected so as to be the circumferential surface side).
  • a glass roll is manufactured was demonstrated in said embodiment, you may cut
  • the manufactured sheet glass is packaged, for example in the state laminated

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Toxicology (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Surface Treatment Of Glass (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Packaging Frangible Articles (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

Provided is a method for producing a glass film, the method comprising: a step for laminating a protection tape T on a glass film G along the longitudinal direction by a laminating unit 5 that is disposed on the transport path of a horizontal transport unit 3 while transporting the glass film G in the horizontal direction by the horizontal transport unit 3; and a step for stretching the wrinkle on the glass film G by a wrinkle-stretching unit 4 that is disposed in the horizontal transport unit 3, before the protection tape T is laminated on the glass film G by the laminating unit 5.

Description

ガラスフィルムの製造方法Method of manufacturing glass film
　本発明は、ガラスフィルムの製造方法に関する。 The present invention relates to a method of producing a glass film.
　ガラスフィルムを製造する手法としては、オーバーフローダウンドロー法、スロットダウンドロー法、リドロー法等のダウンドロー法や、フロート法が使用される。これらの手法では、溶融ガラスを材料として、成形部でガラスフィルムを成形して引き出した後、そのガラスフィルムを横搬送部で横方向に搬送する場合がある。 As a method for producing a glass film, a downdraw method such as an overflow downdraw method, a slot downdraw method, a redraw method, or a float method is used. In these methods, after forming and drawing out a glass film by using a molten glass as a material in a forming unit, the glass film may be conveyed in the lateral direction by the horizontal conveyance unit.
　また、これ以外にも、ガラスフィルムが周囲に巻回された供給ローラからガラスフィルムを繰り出した後、そのガラスフィルムを横搬送部で横方向に搬送する場合がある。 Moreover, after drawing a glass film out of the supply roller with which the glass film was wound by circumference | surroundings besides this, the glass film may be conveyed by the side conveyance part in the cross direction.
　以上のような横搬送部では、例えばガラスフィルムに対して切断などの製造関連処理が施される（例えば、特許文献１を参照）。 In the above-described lateral conveyance unit, for example, a glass film is subjected to manufacturing related processing such as cutting (see, for example, Patent Document 1).
特開２０１３－０１４４４１号公報JP, 2013-014441, A
　ガラスフィルムは脆性材料であり、衝撃や変形によって破損しやすい。そのため、ガラスフィルムに長手方向に沿って保護テープを貼着することにより、ガラスフィルムを補強する場合がある。 A glass film is a brittle material and is easily damaged by impact or deformation. Therefore, a glass film may be reinforced by sticking a protective tape along a longitudinal direction to a glass film.
　しかしながら、ガラスフィルムは薄肉であって可撓性を有しているため、横搬送部で横方向に搬送されている途中で、ガラスフィルムに皺が発生するという問題が生じる。このような皺は、ガラスフィルムのガラス面に比較的大きな隆起部を形成する。そのため、皺が発生した状態であると、保護テープの貼着不良が生じる原因となり得る。 However, since the glass film is thin and flexible, there is a problem that wrinkles are generated in the glass film while being conveyed in the lateral direction by the lateral conveyance unit. Such ridges form relatively large bumps on the glass surface of the glass film. Therefore, when the wrinkles are generated, a sticking failure of the protective tape may be caused.
　本発明は、横搬送部で横方向に搬送されるガラスフィルムに発生する皺による保護テープの貼着不良を確実に抑制することを技術的課題とする。 This invention makes it a technical subject to suppress reliably the adhesion failure of the protective tape by the wrinkles generate | occur | produced in the glass film conveyed by the horizontal conveyance part by the horizontal direction.
　上記の課題を解決するために創案された本発明は、ガラスフィルムの製造方法であって、ガラスフィルムを横搬送部で横方向に搬送しつつ、横搬送部の搬送経路上に配置した貼着部でガラスフィルムに長手方向に沿って保護テープを貼着する工程と、貼着部でガラスフィルムに保護テープを貼着する前に、横搬送部に配置した皺伸ばし部によってガラスフィルムの皺を伸ばす工程とを備えていることを特徴とする。このような構成によれば、横搬送部で横方向に搬送されているガラスフィルムに皺が発生しても、その皺は、貼着部でガラスフィルムに保護テープを貼着する前に、横搬送部に配置されている皺伸ばし部によって伸ばされることになる。そのため、ガラスフィルムに発生した皺は、適正に消え失せ、その後に、貼着部によってガラスフィルムに長手方向に沿って保護テープが貼着されるため、保護テープを正確に貼着することができる。ここで、「横方向」とは、水平方向のみならず、水平方向から僅かに傾斜した方向をも含む（以下、同様）。 The present invention devised to solve the above-mentioned problems is a method for producing a glass film, which is a method for producing a glass film, wherein the glass film is conveyed in the lateral direction by the lateral conveyance unit and attached on the conveyance path of the lateral conveyance unit The step of sticking a protective tape to the glass film in the longitudinal direction in the part, and before sticking the protective tape to the glass film in the sticking part, the crease of the glass film And a step of extending. According to such a configuration, even if wrinkles occur in the glass film being conveyed in the lateral direction in the lateral conveyance unit, the creases are in the lateral direction before the protective tape is attached to the glass film in the attaching unit. It will be extended by the weir extension part arrange | positioned at a conveyance part. Therefore, since the wrinkles which generate | occur | produced on the glass film are lose | disappeared appropriately, since a protective tape is stuck along a longitudinal direction to a glass film by a sticking part after that, a protective tape can be stuck correctly. Here, the “lateral direction” includes not only the horizontal direction but also a direction slightly inclined from the horizontal direction (the same applies hereinafter).
　上記の構成において、皺伸ばし部は、貼着部による保護テープの貼着位置よりも上流側に配置されてガラスフィルムの搬送方向と交差する方向に延びる棒状体を備え、棒状体が、ガラスフィルムを下面側から持ち上げることが好ましい。このようにすれば、ガラスフィルムに発生した皺は、棒状体によって下面側から持ち上げられる際に、その持ち上げ力の作用によって伸ばされることになる。従って、ガラスフィルムに発生する皺のうち様々な方向性を持つ不規則的な皺が、広範囲にわたって効率よく伸ばされることになる。ここで、「棒状体」とは、中実の棒状体のみならず、中空（パイプ状）の棒状体をも含む（以下、同様）。 In the above configuration, the eyebrow extension has a rod-like body disposed on the upstream side of the sticking position of the protective tape by the sticking portion and extending in a direction intersecting the conveyance direction of the glass film, and the rod-like body is a glass film Is preferably lifted from the lower surface side. In this way, the wrinkles generated in the glass film are stretched by the action of the lifting force when being lifted from the lower surface side by the rod-like body. Therefore, among the wrinkles generated in the glass film, irregular wrinkles having various orientations are efficiently stretched over a wide range. Here, the “rod-like body” includes not only a solid rod-like body but also a hollow (pipe-like) rod-like body (the same applies hereinafter).
　上記の構成において、皺伸ばし部は、貼着部による保護テープの貼着位置の上流側から下流側に亘って配置されてガラスフィルムを下面側から支持する支持体を備え、ガラスフィルムの幅方向両端部を支持体の幅方向両端から食み出せて浮かせることが好ましい。このようにすれば、ガラスフィルムには、支持体から食み出した部分の重量によって幅方向両端部側に向かう張力が作用する。そのため、ガラスフィルムに発生した皺のうち、特に搬送方向に沿って発生した皺を引き伸ばすのに効果的である。また、ガラスフィルムの幅方向両端部は、幅方向中央部に比べて厚みが大きくなる場合がある。この場合、幅方向両端部と幅方向中央部を同一平面上で支持すると、ガラスフィルムが当該平面に倣って変形しようとする。この過程で、ガラスフィルムに幅方向両端部と幅方向中央部の厚み差に起因する複雑な変形が生じ、ガラスフィルムに皺が生じやすくなる。そのため、上記のように、幅方向両端部は支持体の外側に食み出して浮いた状態とし、幅方向中央部と幅方向両端部との厚み差による皺の発生を防止することが好ましい。そして、上記の構成では、支持体は貼着位置の上流側から下流側に亘って配置されているので、支持体による皺防止効果は貼着位置でも確実に維持される。 In the above configuration, the eyebrow extension has a support that is disposed from the upstream side to the downstream side of the attachment position of the protective tape by the attachment section and supports the glass film from the lower surface side, and the width direction of the glass film It is preferable to allow both ends to protrude from both ends in the width direction of the support and to float. In this case, the glass film is subjected to tension directed to the both widthwise end sides by the weight of the portion protruding from the support. Therefore, it is effective in extending the wrinkles which generate | occur | produced especially along the conveyance direction among the wrinkles which generate | occur | produced in the glass film. Moreover, the width direction both ends of a glass film may become thick compared with the width direction center part. In this case, when both widthwise end portions and the widthwise center portion are supported on the same plane, the glass film tends to deform following the plane. In this process, complicated deformation occurs due to the thickness difference between the widthwise end portions and the widthwise center portion of the glass film, and wrinkles are easily generated in the glass film. Therefore, as described above, it is preferable that both widthwise end portions protrude and float to the outside of the support to prevent generation of wrinkles due to a difference in thickness between the widthwise central portion and both widthwise ends. And in said structure, since a support body is arrange | positioned over the downstream from the upstream of a sticking position, the wrinkles prevention effect by a support body is reliably maintained also in a sticking position.
　上記構成において、貼着部でガラスフィルムに保護テープを貼着した後に、横搬送部に配置した切断部によってガラスフィルムを長手方向に沿って切断してもよい。このようにすれば、切断部による切断位置では、既にガラスフィルムに保護テープが貼着されているので、切断時にガラスフィルムが破損するのを確実に抑制することができる。 In the above configuration, after the protective tape is attached to the glass film in the attaching part, the glass film may be cut along the longitudinal direction by the cutting part disposed in the lateral conveyance part. In this way, at the cutting position by the cutting portion, the protective tape is already attached to the glass film, so that breakage of the glass film at the time of cutting can be reliably suppressed.
　この場合、切断部でガラスフィルムを切断した後に、保護テープが貼着されたガラスフィルムを巻取ローラによって巻取回収してもよい。このようにすれば、保護テープ付きガラスフィルムを巻回してなるガラスロールを製造することができる。 In this case, after the glass film is cut at the cutting portion, the glass film to which the protective tape is attached may be wound up and collected by a winding roller. In this way, it is possible to manufacture a glass roll formed by winding a glass film with a protective tape.
　更に、貼着部が、ガラスフィルムの上面に保護テープを貼着すると共に、ガラスフィルムの下面側に巻取ローラを配置し、保護テープが貼着された面が外側になるようにガラスフィルムを巻取回収することが好ましい。すなわち、ガラスロールの場合、ガラスフィルムの外側（外周面側）に引張応力が作用するので、圧縮応力が作用するガラスフィルムの内側（内周面側）に比べて傷等がある場合に傷が進展して破損に繋がりやすい。従って、ガラスフィルムの破損を防止する観点からは、保護テープが貼着された面が外側になるようにガラスフィルムを巻取回収し、ガラスフィルムの外周面側を保護テープで保護することが好ましい。 Furthermore, while a sticking part sticks a protective tape on the upper surface of a glass film, a winding roller is arrange | positioned on the lower surface side of a glass film, and the glass film is made so that the surface where the protective tape was stuck becomes outside. It is preferable to take up and collect. That is, in the case of a glass roll, a tensile stress acts on the outer side (outer peripheral surface side) of the glass film, so if there is a scratch or the like as compared to the inner side (inner peripheral surface side) of the glass film It is easy to develop and lead to damage. Therefore, from the viewpoint of preventing breakage of the glass film, it is preferable that the glass film be wound and collected so that the surface to which the protective tape is attached is on the outside, and the outer peripheral surface side of the glass film is protected with the protective tape. .
　また、この場合、ガラスフィルムの上面側から供給される保護シートをガラスフィルムよりも先に巻取ローラに巻回した後、ガラスフィルムの保護テープが貼着された面に保護シートを重ねた状態で、ガラスフィルム及び保護シートを巻取ローラで巻取回収することが好ましい。このようにすれば、予め巻取ローラに巻回された保護シートの一部とそれに連続する保護シートの残りの一部との間にガラスフィルムを挟み込みながら、ガラスフィルムを巻取ローラの周りに巻取回収することができる。 In this case, the protective sheet supplied from the upper surface side of the glass film is wound around the winding roller prior to the glass film, and then the protective sheet is superimposed on the surface to which the protective tape of the glass film is attached. Preferably, the glass film and the protective sheet are wound up and collected by a winding roller. In this way, the glass film is wrapped around the winding roller while sandwiching the glass film between a part of the protective sheet previously wound around the winding roller and a part of the remaining protective sheet that is continuous with it. It can be wound and collected.
　以上のような本発明によれば、横搬送部で横方向に搬送されるガラスフィルムに発生する皺による保護テープの貼着不良を確実に抑制することができる。 According to the present invention as described above, it is possible to reliably suppress the adhesion failure of the protective tape due to wrinkles generated on the glass film conveyed in the lateral direction in the lateral conveyance section.
ガラスフィルムの製造方法に用いられるガラスフィルムの製造装置の全体構成を示す概略側面図である。It is a schematic side view which shows the whole structure of the manufacturing apparatus of the glass film used for the manufacturing method of a glass film. ガラスフィルムの製造装置の要部を示す拡大平面図である。It is an enlarged plan view which shows the principal part of the manufacturing apparatus of a glass film. ガラスフィルムの製造装置の要部を示す拡大縦断面図である。It is an enlarged longitudinal cross-sectional view which shows the principal part of the manufacturing apparatus of a glass film. ガラスフィルムの製造装置の要部を示す拡大縦断面図である。It is an enlarged longitudinal cross-sectional view which shows the principal part of the manufacturing apparatus of a glass film. ガラスロールの要部を示す拡大縦断面図である。It is an enlarged longitudinal cross-sectional view which shows the principal part of a glass roll.
　以下、本発明に係るガラスフィルムの製造方法の実施形態を図面を参照して説明する。 Hereinafter, an embodiment of a method for producing a glass film according to the present invention will be described with reference to the drawings.
　図１及び図２に示すように、本製造方法に用いられるガラスフィルムの製造装置は、ガラスフィルムＧを成形する成形部１と、ガラスフィルムＧの進行方向を縦方向下方から横方向に変換する方向変換部２と、方向変換後にガラスフィルムＧを横方向に搬送する横搬送部３と、横搬送部３で横方向に搬送しているガラスフィルムＧに発生した皺を伸ばす皺伸ばし部４と、皺伸ばし部４で皺を伸ばしたガラスフィルムＧに保護テープＴを貼着する貼着部５と、貼着部５で保護テープＴを貼着したガラスフィルムＧの非製品部Ｇｂを切断する切断部６と、切断部６で非製品部Ｇｂを切断除去したガラスフィルムＧの製品部Ｇａを巻取回収する巻取ローラ７とを備える。 As shown in FIGS. 1 and 2, the apparatus for manufacturing a glass film used in the present manufacturing method converts the forming portion 1 for forming the glass film G, and the traveling direction of the glass film G from the longitudinal direction to the lateral direction. A direction change unit 2, a lateral conveyance unit 3 for conveying the glass film G in the lateral direction after the direction change, and a crease extension unit 4 for extending wrinkles generated on the glass film G being conveyed in the lateral direction by the lateral conveyance unit 3 The non-product portion Gb of the glass film G to which the protective tape T has been attached by the attaching portion 5 and the attaching portion 5 to attach the protective tape T to the glass film G in which the eyelids have been extended at the eyelid extending portion 4 The cutting unit 6 includes a winding roller 7 that winds and collects the product portion Ga of the glass film G from which the non-product portion Gb is cut and removed by the cutting unit 6.
　本実施形態では、非製品部ＧｂはガラスフィルムＧの幅方向（搬送方向と直交する方向）両端部に形成される。非製品部Ｇｂには、製品部Ｇａよりも大きな厚みを有する耳部と称される部分が含まれる場合がある。製品部Ｇａの厚みは、好ましくは３００μｍ以下、より好ましくは２００μｍ以下、更に好ましくは１００μｍ以下である。 In the present embodiment, the non-product portion Gb is formed at both ends in the width direction (direction orthogonal to the transport direction) of the glass film G. The non-product portion Gb may include a portion called an ear portion having a thickness larger than that of the product portion Ga. The thickness of the product portion Ga is preferably 300 μm or less, more preferably 200 μm or less, and still more preferably 100 μm or less.
　成形部１は、オーバーフローダウンドロー法を実行するものである。成形部１では、楔状の断面形状を有する成形体８に溶融ガラスＧｍを供給すると共に、成形体８の頂部から両側方に溢れ出た溶融ガラスＧｍをその下端部で融合させて流下させることで、溶融ガラスＧｍから板状のガラスフィルムＧを連続的に成形する。 The forming unit 1 executes an overflow downdraw method. In the forming unit 1, the molten glass Gm is supplied to the formed body 8 having a bowl-like cross-sectional shape, and the molten glass Gm overflowing from the top of the formed body 8 on both sides is fused at the lower end thereof and allowed to flow down. A plate-like glass film G is continuously formed from the molten glass Gm.
　成形体８で成形されたガラスフィルムＧは、成形体８の下方領域において、徐冷（アニール）され、さらに室温付近まで冷却される。この間、ガラスフィルムＧは、表裏両側から複数のローラ（不図示）によって挟持された状態で下方に案内される。 The glass film G formed by the formed body 8 is annealed (annealed) in the lower region of the formed body 8 and further cooled to around room temperature. During this time, the glass film G is guided downward in a state of being sandwiched by a plurality of rollers (not shown) from both the front and back sides.
　成形部１の下方には、方向変換部２が配置されている。方向変換部２には、ガラスフィルムＧの裏面側に、ガラスフィルムＧの方向変換を案内するガイド部材としての複数のガイドローラ９が湾曲状に配列されている。これらガイドローラ９は、ガラスフィルムＧの裏面に接触する。 Below the forming unit 1, the direction changing unit 2 is disposed. On the back surface side of the glass film G, a plurality of guide rollers 9 as a guide member for guiding the direction conversion of the glass film G are arranged in a curved shape in the direction conversion unit 2. The guide rollers 9 contact the back surface of the glass film G.
　図示は省略するが、本実施形態では、ガイドローラ９は、幅方向中央部と幅方向両端部の３つに分割されている。ガラスフィルムＧの成形を開始した直後等のガラスフィルムＧの成形が安定するまでは、幅方向中央部及び幅方向両端部のガイドローラ９でガラスフィルムＧを案内し、ガラスフィルムＧの成形が安定した後は、幅方向中央部のガイドローラ９が案内位置から退避し、幅方向両端部のガイドローラ９のみでガラスフィルムＧを案内する。 Although illustration is omitted, in the present embodiment, the guide roller 9 is divided into three, that is, the center in the width direction and both ends in the width direction. The glass film G is guided by the guide rollers 9 in the width direction central portion and both widthwise ends until the formation of the glass film G is stabilized immediately after the formation of the glass film G is started, and the formation of the glass film G is stable Thereafter, the guide roller 9 at the central portion in the width direction retracts from the guide position, and the glass film G is guided only by the guide rollers 9 at the both end portions in the width direction.
　方向変換部２の構成は、ガラスフィルムＧの進行方向を変換できる構成であれば特に限定されず、例えば、ローラでガラスフィルムＧの全幅を常時案内する構成であってもよいし、ベルトコンベアや気体を噴射するフロータ等を用いた構成であってもよい。 The configuration of the direction conversion unit 2 is not particularly limited as long as it can convert the traveling direction of the glass film G. For example, the entire width of the glass film G may always be guided by a roller. A configuration using a floater or the like for injecting a gas may be used.
　方向変換部２の進行方向前方（下流側）には、横搬送部３が配置されている。横搬送部３は、上流側から搬送方向に間隔を置いて配置されたベルトコンベア１０、フロータ１１、搬送台１２を備える。 A lateral conveyance unit 3 is disposed forward (downstream side) in the traveling direction of the direction conversion unit 2. The lateral conveyance unit 3 includes a belt conveyor 10, a floater 11, and a conveyance table 12 which are disposed at intervals in the conveyance direction from the upstream side.
　ベルトコンベア１０は駆動コンベアであり、ガラスフィルムＧを接触支持する。 The belt conveyor 10 is a drive conveyor, and contacts and supports the glass film G.
　フロータ１１は、ガラスフィルムＧの裏面側に気体等を噴射してガラスフィルムＧを非接触支持する。フロータ１１は、フロータ１１の上流側でガラスフィルムＧに破損等のトラブルが生じた場合に、ガラスフィルムＧの下流側への搬送を停止すると共に、不良が生じたガラスフィルムＧを下方に案内して破棄できる構成とされている。フロータ１１は省略してもよいし、ベルトコンベアに代えてもよい。 The floater 11 sprays gas or the like on the back surface side of the glass film G to support the glass film G in a noncontact manner. When problems such as breakage occur in the glass film G on the upstream side of the floater 11, the floater 11 stops the conveyance of the glass film G to the downstream side, and guides the glass film G having a defect downward. And can be destroyed. The floater 11 may be omitted or may be replaced by a belt conveyor.
　横搬送部３は、ガラスフィルムＧを水平方向に搬送するように構成されているが、水平方向に対して上下にそれぞれ４５°未満の範囲内（好ましくは３０°未満の範囲内）で傾斜していてもよい。 The horizontal conveyance unit 3 is configured to convey the glass film G in the horizontal direction, but is inclined at an angle of less than 45 ° (preferably, less than 30 °) with respect to the horizontal direction. It may be
　搬送台１２の上部には、皺伸ばし部４が定置に配置されている。皺伸ばし部４とガラスフィルムＧとの間には、搬送用シートＳ１が介在されている。搬送用シートＳ１は、下面が皺伸ばし部４に摺動可能とされると共に、上面がガラスフィルムＧを搬送支持する搬送支持面とされている。ガラスフィルムＧは、搬送用シートＳ１の移動によって搬送されるため、搬送台１２は、ガラスフィルムＧに直接搬送力を付与しない停止台とされる。 At the upper part of the transfer stand 12, a weir extending unit 4 is disposed in a stationary manner. A sheet for conveyance S1 is interposed between the crease-extending portion 4 and the glass film G. The lower surface of the sheet S1 for conveyance is made slidable on the crease 4 and the upper surface is a conveyance support surface for conveying and supporting the glass film G. Since the glass film G is conveyed by the movement of the conveyance sheet S1, the conveyance base 12 is a stop which does not directly apply the conveyance force to the glass film G.
　搬送用シートＳ１は、搬送台１２の下方に配置された供給ローラ１３から上方に向かって繰り出され、搬送台１２の上部で皺伸ばし部４とガラスフィルムＧとの間を通過し、皺伸ばし部４の下流側端部から下方に向かって送り出される。この際、搬送用シートＳ１は、駆動部（不図示）によって、閉ループ状又は開ループ状の軌道に沿って送られる。搬送用シートＳ１は、樹脂製（特に発泡樹脂）であることが好ましい。 The conveyance sheet S1 is drawn upward from the supply roller 13 disposed below the conveyance table 12, passes between the crease-extending part 4 and the glass film G at the upper part of the conveyance table 12, and the crease-extending part It is sent downward from the downstream end of 4. At this time, the transport sheet S1 is sent along a closed loop or an open loop trajectory by a drive unit (not shown). The transport sheet S1 is preferably made of resin (in particular, foamed resin).
　搬送台１２の上方には、上流側に貼着部５が配置され、下流側に切断部６が配置されている。貼着部５は、保護テープＴが巻回されてなる供給ローラ１４と、供給ローラ１４から繰り出された保護テープＴを案内する一又は複数のガイドローラ１５と、ガイドローラ１５に案内された保護テープＴをガラスフィルムＧに押圧する押圧ローラ１６とを備える。 The sticking part 5 is disposed on the upstream side above the transport table 12 and the cutting part 6 is disposed on the downstream side. The sticking unit 5 includes a supply roller 14 formed by winding the protective tape T, one or more guide rollers 15 for guiding the protective tape T fed from the supply roller 14, and a protection guided by the guide roller 15. And a pressing roller 16 for pressing the tape T against the glass film G.
　押圧ローラ１６は、搬送されてくるガラスフィルムＧの上面に保護テープＴを介して接触した状態で矢印ａ方向（ガラスフィルムＧの搬送方向に沿う方向）に転動する（図３を参照）。従って、本実施形態では、押圧ローラ１６とガラスフィルムＧの接触位置が、保護テープＴの貼着位置となる。 The pressure roller 16 rolls in the direction of arrow a (the direction along the conveyance direction of the glass film G) in a state of being in contact with the upper surface of the conveyed glass film G via the protective tape T (see FIG. 3). Accordingly, in the present embodiment, the contact position of the pressure roller 16 and the glass film G is the sticking position of the protective tape T.
　保護テープＴは、ガラスフィルムＧと接触する側の面（下面）に紫外線硬化型の接着面を有する。保護テープＴの接着面には紫外線照射装置（不図示）から紫外線が照射され、保護テープＴがガラスフィルムＧに接着する。保護テープＴの接着面に用いられる接着剤は、紫外線硬化型に限定されず、熱硬化型や感圧型等の他タイプの接着剤を使用してもよい。また、アクリル系粘着剤等の粘着剤を使用してもよい。保護テープＴの接着面を保持するシート状基材は、樹脂製であることが好ましい。 The protective tape T has an ultraviolet-curable adhesive surface on the surface (lower surface) in contact with the glass film G. Ultraviolet rays are irradiated from the ultraviolet irradiation device (not shown) to the adhesive surface of the protective tape T, and the protective tape T adheres to the glass film G. The adhesive used for the adhesive surface of the protective tape T is not limited to the ultraviolet curing type, and other types of adhesives such as a thermosetting type and a pressure sensitive type may be used. Further, a pressure sensitive adhesive such as an acrylic pressure sensitive adhesive may be used. It is preferable that the sheet-like base material holding the adhesive surface of the protective tape T is made of resin.
　本実施形態では、図３に示すように、保護テープＴは、製品部Ｇａの幅方向両端部に、搬送方向（ガラスフィルムＧの長手方向）に沿って貼着される。 In the present embodiment, as shown in FIG. 3, the protective tape T is attached to both widthwise end portions of the product portion Ga along the transport direction (longitudinal direction of the glass film G).
　保護テープＴは、切断部６による切断処理の邪魔にならないように、製品部Ｇａの幅方向両端よりも僅かに内側に貼着され、製品部Ｇａと非製品部Ｇｂの境界に形成される切断線Ａ上には貼着されない。なお、ガラスフィルムＧにおける保護テープＴの貼着領域は特に限定されない。保護テープＴは、例えば、製品部Ｇａの幅方向中央部に貼着してもよいし、ガラスフィルムＧの全幅に亘って貼着してもよい。 The protective tape T is attached slightly inward of both widthwise ends of the product portion Ga so as not to interfere with the cutting process by the cutting portion 6, and is formed at the boundary between the product portion Ga and the non-product portion Gb. It is not stuck on line A. In addition, the adhesion | pasting area | region of the protective tape T in the glass film G is not specifically limited. For example, the protective tape T may be attached to the center in the width direction of the product portion Ga, or may be attached to the entire width of the glass film G.
　切断部６は、曲げ応力割断、熱応力割断（例えばレーザー割断）、溶断（例えばレーザー溶断）等によって、ガラスフィルムＧの非製品部Ｇｂを搬送方向に沿って切断する。切断された非製品部Ｇｂは、製品部Ｇａから上下及び／又は幅方向（左右）に分離された後に破棄される。なお、図１は、非製品部Ｇｂが搬送方向前方に対して斜め下方に向かって送られて破棄される場合を例示している。 The cutting part 6 cuts the non-product part Gb of the glass film G along the transport direction by bending stress cutting, thermal stress cutting (for example, laser cutting), melting (for example, laser cutting) or the like. The cut non-product part Gb is discarded after being separated from the product part Ga in the vertical direction and / or the width direction (left and right). FIG. 1 exemplifies the case where the non-product portion Gb is sent obliquely downward to the front in the transport direction and discarded.
　横搬送部３の下流側には、巻取ローラ７が配置されている。巻取ローラ７は、保護テープＴが幅方向両端部に貼着された製品部Ｇａを巻取回収する。 A winding roller 7 is disposed downstream of the lateral conveyance unit 3. The winding roller 7 winds and collects the product portion Ga on which the protective tape T is attached to both ends in the width direction.
　巻取ローラ７は、製品部Ｇａの下面側に配置されており、保護テープＴが貼着された面が外側になるように製品部Ｇａを巻取回収する。巻取ローラ７の上方には、保護シートＳを巻回してなる供給ローラ１７が配置されており、供給ローラ１７から繰り出された保護シートＳが、保護テープＴ付きの製品部Ｇａの上面に重ねられた状態で、製品部Ｇａと共に巻取ローラ７で巻取回収される。保護シートＳは、ポリエチレンテレフタレートフィルム（ＰＥＴフィルム）等の樹脂製であることが好ましい。 The winding roller 7 is disposed on the lower surface side of the product portion Ga, and winds and collects the product portion Ga such that the surface to which the protective tape T is attached is on the outside. Above the take-up roller 7, a supply roller 17 formed by winding a protective sheet S is disposed, and the protective sheet S fed out from the supply roller 17 is superimposed on the upper surface of the product portion Ga with the protective tape T. In the closed state, the product portion Ga is wound and collected by the winding roller 7. The protective sheet S is preferably made of a resin such as a polyethylene terephthalate film (PET film).
　ガラスフィルムＧの巻取回収を開始する際には、保護シートＳが、予めガラスフィルムＧよりも先に巻取ローラ７に巻回されている。保護シートＳの先端部（巻き始め側）は、保護シートＳの先端部（巻き始め側）の上に位置し且つ巻取ローラ７の周りに巻回されているガラスフィルムＧの先端部よりも前に、巻取ローラ７の周りに一周以上巻回されていることが好ましい。これにより、予め巻取ローラ７に巻回された保護シートＳの一部とそれに連続する保護シートＳの残りの一部との間に製品部Ｇａを挟み込みながら、製品部Ｇａを巻取ローラ７の周りに巻取回収することができる。この際、製品部Ｇａに過度な張力を付与することなく、製品部Ｇａを保護シートＳによって巻取ローラ７側に押え付けながら巻き締めることができる。すなわち、巻取回収時には、製品部Ｇａに作用する張力を、保護シートＳに作用する張力よりも小さくすることができる。なお、巻取ローラ７に至る直前で、製品部Ｇａが凹湾曲状の軌道を移動するように製品部Ｇａをたるませることにより、製品部Ｇａに作用する張力が実質的に零になるようにしてもよい。 When the winding and collecting of the glass film G is started, the protective sheet S is previously wound around the winding roller 7 earlier than the glass film G. The leading end (the winding start side) of the protective sheet S is located above the leading end (the winding start side) of the protective sheet S and is more than the leading end of the glass film G wound around the winding roller 7 Preferably, it is wound around the winding roller 7 once or more before. As a result, the product portion Ga is wound around the product portion Ga while the product portion Ga is sandwiched between a part of the protective sheet S wound around the winding roller 7 in advance and a part of the remaining protective sheet S. It can be wound around and collected. At this time, it is possible to wind and tighten the product portion Ga while pressing the product portion Ga to the winding roller 7 side by the protective sheet S without applying an excessive tension to the product portion Ga. That is, at the time of winding and collecting, the tension acting on the product portion Ga can be made smaller than the tension acting on the protective sheet S. Incidentally, the tension applied to the product portion Ga is made substantially zero by slackening the product portion Ga so that the product portion Ga moves on a concave-curved trajectory just before reaching the winding roller 7. May be
　図２に示すように、皺伸ばし部４は、ガラスフィルムＧに対する貼着部５による保護テープＴの貼着位置（押圧ローラ１６に対応する位置）よりも上流側に配置され、搬送方向と交差する方向に延びる棒状体１８と、貼着位置の上流側から下流側に亘って配置され、平面視が矩形状の定板１９とを備える。定板１９は、貼着位置の上流側から下流側に亘る領域でガラスフィルムＧを下方から支持する支持体である。 As shown in FIG. 2, the eyebrow stretching portion 4 is disposed on the upstream side of the sticking position (position corresponding to the pressing roller 16) of the protective tape T by the sticking portion 5 to the glass film G, and intersects the transport direction It comprises a rod-like body 18 extending in the direction of movement and a plate 19 which is disposed from the upstream side to the downstream side of the bonding position and has a rectangular plan view. The fixed plate 19 is a support that supports the glass film G from below in a region ranging from the upstream side to the downstream side of the bonding position.
　搬送用シートＳ１の幅方向両端は、ガラスフィルムＧの幅方向両端から食み出していると共に、搬送台１２の幅方向両端は、搬送用シートＳ１の幅方向両端から食み出している。 Both ends in the width direction of the sheet S1 for conveyance are protruded from both ends in the width direction of the glass film G, and both ends in the width direction of the conveyance table 12 are extracted from both ends in the width direction of the sheet S1 for conveyance.
　図２の図示例では、ガラスフィルムＧの幅方向両端が、棒状体１８の長手方向両端から食み出しているが、これとは逆に、棒状体１８の長手方向両端が、ガラスフィルムＧの幅方向両端から食み出していてもよい。同図の図示例では、搬送用シートＳ１の幅方向両端が、ガラスフィルムＧの幅方向両端から食み出しているが、これとは逆に、ガラスフィルムＧの幅方向両端が、搬送用シートＳ１の幅方向両端から食み出していてもよい。 In the illustrated example of FIG. 2, both ends in the width direction of the glass film G protrude from both ends in the longitudinal direction of the rod-like body 18, but the opposite ends of the glass film G in the longitudinal direction of the rod-like body 18 It may protrude from both widthwise ends. Although the width direction both ends of sheet | seat S1 for conveyance protrude from the width direction both ends of glass film G in the example of illustration of the same figure, the width direction both ends of glass film G conversely to this, the sheet | seat for conveyance It may protrude from both widthwise ends of S1.
　図３に示すように、棒状体１８は、搬送台１２の上流側端部に、長手方向が幅方向と平行になるように配置されている。棒状体１８は、固定されることによって回転不能な状態とされている。棒状体１８は、長手方向に直角な断面の形状が円形である。 As shown in FIG. 3, the rod-shaped body 18 is disposed at the upstream end of the carrier table 12 so that the longitudinal direction is parallel to the width direction. The rod-like body 18 is in a non-rotatable state by being fixed. The rod-like body 18 has a circular shape in cross section perpendicular to the longitudinal direction.
　棒状体１８は、断面形状が円形に限定されず、例えば、楕円形や多角形であってもよいし、下面部は平坦面などであってもよい。すなわち、棒状体１８の断面形状は、少なくともガラスフィルムＧの下面側と接触する面（上面）が凸状であればよい。棒状体１８は、矢印ｂ方向（ガラスフィルムＧの搬送方向に沿う方向）に回転する構成であってもよい。棒状体１８は、幅方向に対して僅かに傾斜していてもよい。 The cross-sectional shape of the rod-like body 18 is not limited to a circle, and may be, for example, an ellipse or a polygon, and the lower surface portion may be a flat surface or the like. That is, as for the cross-sectional shape of the rod-shaped body 18, it is sufficient if at least the surface (upper surface) in contact with the lower surface side of the glass film G is convex. The rod-like body 18 may be configured to rotate in the direction of arrow b (the direction along the conveyance direction of the glass film G). The rod-like body 18 may be slightly inclined with respect to the width direction.
　棒状体１８の上端位置は、定板１９の上端位置よりも高い。両者１８，１９の高さの相違寸法ｈは、好ましくは１ｍｍ～１０ｍｍ、より好ましくは１～３ｍｍ（本実施形態では２ｍｍ）である。棒状体１８と定板１９とは、搬送方向において近接した状態で離間しているが、接触していてもよい。 The upper end position of the rod-like body 18 is higher than the upper end position of the plate 19. The difference dimension h between the heights 18 and 19 is preferably 1 mm to 10 mm, more preferably 1 to 3 mm (2 mm in the present embodiment). Although the rod-like body 18 and the fixed plate 19 are separated in the state of being close in the transport direction, they may be in contact with each other.
　図４に示すように、定板１９は、例えば搬送台１２の上面部に固定配置されており、その上面は平坦である。ガラスフィルムＧの製品部Ｇａは、搬送用シートＳ１を介して定板１９の上面により下方から支持された状態となる。ガラスフィルムＧの非製品部Ｇｂに含まれる耳部Ｇｘは、定板１９の上面における幅方向両端から食み出して浮いた状態となる。 As shown in FIG. 4, the fixed plate 19 is fixedly disposed, for example, on the upper surface portion of the transport table 12, and the upper surface is flat. Product part Ga of glass film G will be in the state where it was supported from the upper part by the upper surface of plate 19 via conveyance sheet S1. The ear portion Gx included in the non-product portion Gb of the glass film G protrudes from both ends in the width direction on the upper surface of the plate 19 and floats.
　定板１９の上面は、平坦に限定されず、例えば幅方向中央部が幅方向両端部よりも高くなるように緩やかに湾曲していてもよい。定板１９を省略し、搬送台１２を支持体としてもよい。定板１９を省略する場合、ガラスフィルムＧの製品部Ｇａは、搬送用シートＳ１を介して搬送台１２の上面により下方から支持されると共に、ガラスフィルムＧの非製品部Ｇｂに含まれる耳部Ｇｘは、搬送台１２の上面における幅方向両端から食み出して浮いた状態となることが好ましい。 The upper surface of the fixed plate 19 is not limited to be flat, and may be gently curved so that, for example, the widthwise center portion is higher than both widthwise ends. The fixed plate 19 may be omitted and the carrier 12 may be used as a support. When the fixed plate 19 is omitted, the product portion Ga of the glass film G is supported from below by the upper surface of the transport table 12 via the transport sheet S1, and the ear portion included in the non-product portion Gb of the glass film G It is preferable that Gx floats out from both ends in the width direction on the upper surface of the transfer table 12 and floats.
　以上のような構成を備えた製造装置によってガラスフィルムの製造方法を実施すれば、図１に示す成形部１から方向変換部２を経て横搬送部３に至ったガラスフィルムＧは、薄肉であって可撓性を有していることに起因して、ベルトコンベア１０やフロータ１２によって横方向に搬送される間に、広範囲にわたって皺が発生する場合がある。 If the manufacturing method of a glass film is implemented by the manufacturing apparatus provided with the above structures, the glass film G which reached the horizontal conveyance part 3 through the direction conversion part 2 from the shaping | molding part 1 shown in FIG. Due to its flexibility, wrinkles may occur over a wide area while being conveyed laterally by the belt conveyor 10 or the floater 12.
　しかしながら、これらの皺は、搬送台１２に配置された皺伸ばし部４によって適正に伸ばされる。そのため、貼着部５による貼着位置や、その下流側の切断部６による切断位置に支障が生じない程度まで皺が消え失せる。従って、貼着部５によって保護テープＴをガラスフィルムＧに正確に貼着することができると共に、切断部６によってガラスフィルムＧを正確に切断することができる。 However, these weirs are properly stretched by the weir straightening unit 4 disposed on the carriage 12. Therefore, wrinkles disappear and lose to such an extent that trouble does not arise in the pasting position by pasting part 5, and the cutting position by cutting part 6 of the lower stream side. Therefore, the protective tape T can be accurately adhered to the glass film G by the adhering section 5, and the glass film G can be accurately cut by the cutting section 6.
　そして、切断を終えたガラスフィルムＧの製品部Ｇａは、皺が消え失せた状態で巻取ローラ７に至る。これにより、最終的に、図５に示すように、巻芯としての巻取ローラ７の周囲にガラスフィルムＧと保護シートＳとが重なった状態で巻き取られてなるガラスロールＲを製造することができる。なお、ガラスロールＲに含まれる製品部Ｇａの幅方向両端部には、保護テープＴが貼着された状態となる。この状態で、製品部Ｇａと保護シートＳとの間、及び保護シートＳと保護テープＴとの間は、互いに接着されていない。 Then, the product portion Ga of the glass film G which has been cut reaches the winding roller 7 in a state where the wrinkles disappear and disappear. Thus, finally, as shown in FIG. 5, a glass roll R is produced in which the glass film G and the protective sheet S are wound around each other around the winding roller 7 as a winding core. Can. In addition, in the width direction both ends of product part Ga contained in glass roll R, it will be in the state where protective tape T was stuck. In this state, the product portion Ga and the protective sheet S and the protective sheet S and the protective tape T are not adhered to each other.
　ここで、製造されたガラスロールは、加工工場に搬送される場合がある。加工工場では、例えば、ガラスロールから製品部Ｇａを繰り出して、保護テープＴが接着されていない製品部Ｇａの幅方向中央部に対して電極等が形成される。製品部Ｇａの幅方向両端部に貼着された保護テープＴは電極等の形成が終了した後に製品部Ｇａから剥離又はガラスと共に切断除去される。 Here, the manufactured glass roll may be conveyed to a processing factory. In the processing factory, for example, the product portion Ga is fed from a glass roll, and an electrode or the like is formed on the widthwise central portion of the product portion Ga to which the protective tape T is not adhered. The protective tape T attached to both ends in the width direction of the product portion Ga is peeled off from the product portion Ga or cut and removed together with the glass after the formation of the electrodes and the like is completed.
　なお、本発明は、上記の実施形態の構成に限定されるものではなく、上記した作用効果に限定されるものでもない。本発明は、本発明の要旨を逸脱しない範囲で種々の変更が可能である。 In addition, this invention is not limited to the structure of said embodiment, It is not limited to an effect mentioned above. The present invention can be variously modified without departing from the scope of the present invention.
　上記の実施形態では、横搬送部において、保護テープの貼着位置の下流側で切断処理を行う場合を説明したが、保護テープの貼着位置の下流側で行う製造関連処理は切断処理に限定されない。製造関連処理には、切断処理の他に、端面加工処理、印刷等の成膜処理等のガラスフィルムに直接何らかの加工を施す処理はもちろん、ガラスフィルム表面の洗浄処理など、間接的にガラスフィルムを最終製品（出荷可能な状態の製品）に近づけるための処理が広く含まれる。 In the above embodiment, the case where the cutting process is performed on the downstream side of the sticking position of the protective tape in the horizontal conveyance unit has been described, but the manufacturing related process performed on the downstream side of the sticking position of the protective tape is limited to the cutting process I will not. For processing related to manufacturing, in addition to cutting processing, processing to directly apply some processing to the glass film such as end surface processing, film formation processing such as printing, of course, glass film is indirectly processed such as cleaning processing of the glass film surface. A process is widely included to bring it closer to the final product (product ready for shipping).
　上記の実施形態では、ガラスフィルムを成形するために、オーバーフローダウンドロー法を採用した場合を説明したが、スロットダウンドロー法やリドロー法などの他のダウンドロー法を採用してもよい。また、フロートバスからガラスフィルムを引き出して横搬送部で搬送するようにしたフロート法を採用してもよい。 Although the above embodiment has described the case of employing the overflow down draw method to form the glass film, other down draw methods such as the slot down draw method and the redraw method may be employed. Moreover, you may employ | adopt the float method which pulled out the glass film from the float bath, and was conveyed by the side conveyance part.
　上記の実施形態では、成形部によって連続的に成形されるガラスフィルムを横搬送部に供給する場合を説明したが、ガラスフィルムが巻回された供給ローラ（ガラスロール）から連続的に繰り出されるガラスフィルムを横搬送部に供給するようにしてもよい。この場合、上記の実施形態と同様にガラスフィルムを巻取回収する態様を採用すれば、ロール・トゥー・ロール（Roll to Roll）方式で製造工程が実施されることになる。 Although the above embodiment has described the case where the glass film continuously formed by the forming unit is supplied to the lateral conveyance unit, the glass continuously drawn from the supply roller (glass roll) on which the glass film is wound is described. The film may be supplied to the lateral conveyance unit. In this case, if an aspect in which the glass film is wound and recovered as in the above embodiment is adopted, the manufacturing process is performed in a roll-to-roll method.
　上記の実施形態では、保護テープが貼着された面が外側（外周面側）になるように製品部を巻取回収する場合を説明したが、保護テープが貼着された面が内側（内周面側）になるように製品部を巻取回収してもよい。 In the above embodiment, the case where the product portion is wound up and collected so that the surface to which the protective tape is attached is on the outer side (the outer peripheral surface side) has been described, but the surface to which the protective tape is attached is on the inside (internal The product portion may be wound and collected so as to be the circumferential surface side).
　上記の実施形態では、ガラスロールを製造する場合を説明したが、ガラスフィルムを所定長さ毎に幅方向に切断し、板ガラスを製造してもよい。なお、製造された複数枚の板ガラスは、例えば、パレット上に縦姿勢又は横姿勢で積層された状態で梱包される。この場合、各板ガラスの相互間には、保護シートを介在させることが好ましい。 Although the case where a glass roll is manufactured was demonstrated in said embodiment, you may cut | disconnect a glass film in the width direction for every predetermined length, and may manufacture plate glass. In addition, the manufactured sheet glass is packaged, for example in the state laminated | stacked by the vertical position or horizontal position on the pallet. In this case, it is preferable to interpose a protective sheet between each sheet glass.
１　　　成形部
２　　　方向変換部
３　　　横搬送部
４　　　皺伸ばし部
５　　　貼着部
６　　　切断部
７　　　巻取ローラ
８　　　成形体
９　　　ガイドローラ
１０　　ベルトコンベア
１１　　フロータ
１２　　搬送台
１３　　供給ローラ（搬送用シート用）
１４　　供給ローラ（保護テープ用）
１５　　ガイドローラ
１６　　押圧ローラ
１７　　供給ローラ（保護シート用）
１８　　棒状体
１９　　定板
Ｇ　　　ガラスフィルム
Ｇａ　　製品部
Ｇｂ　　非製品部
Ｇｘ　　耳部
Ｒ　　　ガラスロール
Ｓ　　　保護シート
Ｓ１　　搬送用シート
Ｔ　　　保護テープ DESCRIPTION OF SYMBOLS 1 Molding part 2 Direction conversion part 3 Horizontal conveyance part 4 Elongation part 5 Sticking part 6 Cutting part 7 Winding roller 8 Molded body 9 Guide roller 10 Belt conveyor 11 Floater 12 Conveyance stand 13 Supply roller (for conveyance sheet)
14 Supply roller (for protective tape)
15 Guide roller 16 Pressure roller 17 Supply roller (for protective sheet)
18 rod-like body 19 plate G glass film Ga product portion Gb non-product portion Gx ear portion R glass roll S protective sheet S1 conveying sheet T protective tape

Claims (7)

  1. 　ガラスフィルムの製造方法であって、
    　ガラスフィルムを横搬送部で横方向に搬送しつつ、前記横搬送部の搬送経路上に配置した貼着部で前記ガラスフィルムに長手方向に沿って保護テープを貼着する工程と、
    　前記貼着部で前記ガラスフィルムに前記保護テープを貼着する前に、前記横搬送部に配置した皺伸ばし部によって前記ガラスフィルムの皺を伸ばす工程とを備えていることを特徴とするガラスフィルムの製造方法。     A method of producing a glass film,
    Attaching a protective tape along the longitudinal direction to the glass film by a sticking section disposed on the conveyance path of the lateral conveyance section while conveying the glass film in the lateral direction by the lateral conveyance section;
    And a step of stretching the wrinkles of the glass film by the crease-extending part disposed in the lateral conveyance portion before attaching the protective tape to the glass film in the adhesion part. Manufacturing method.
  2. 　前記皺伸ばし部は、前記貼着部による前記保護テープの貼着位置よりも上流側に配置されて前記ガラスフィルムの搬送方向と交差する方向に延びる棒状体を備え、
    　前記棒状体が、前記ガラスフィルムを下面側から持ち上げることを特徴とする請求項１に記載のガラスフィルムの製造方法。     The ridge-extending portion includes a rod-shaped body disposed on the upstream side of the sticking position of the protective tape by the sticking portion, and extending in a direction intersecting the conveyance direction of the glass film,
    The said rod-shaped body raises the said glass film from the lower surface side, The manufacturing method of the glass film of Claim 1 characterized by the above-mentioned.
  3. 　前記皺伸ばし部は、前記貼着部による前記保護テープの貼着位置の上流側から下流側に亘って配置されて前記ガラスフィルムを下面側から支持する支持体を備え、
    　前記ガラスフィルムの幅方向両端部を前記支持体の幅方向両端から食み出せて浮かせることを特徴とする請求項１又は２に記載のガラスフィルムの製造方法。     The crease-extending portion includes a support disposed from the upstream side to the downstream side of the sticking position of the protective tape by the sticking portion and supporting the glass film from the lower surface side.
    The method for producing a glass film according to claim 1 or 2, wherein both widthwise end portions of the glass film are protruded from both widthwise ends of the support and floated.
  4. 　前記貼着部で前記ガラスフィルムに前記保護テープを貼着した後に、前記横搬送部に配置した切断部によって前記ガラスフィルムを前記長手方向に沿って切断することを特徴とする請求項１～３のいずれか１項に記載のガラスフィルムの製造方法。 4. The method according to claim 1, wherein the protective tape is attached to the glass film in the attaching section, and then the glass film is cut along the longitudinal direction by a cutting section disposed in the horizontal conveyance section. The manufacturing method of the glass film of any one of these.
  5. 　前記切断部で前記ガラスフィルムを切断した後に、前記保護テープが貼着された前記ガラスフィルムを巻取ローラによって巻取回収することを特徴とする請求項４に記載のガラスフィルムの製造方法。 The method for producing a glass film according to claim 4, wherein the glass film to which the protective tape has been attached is wound up and collected by a winding roller after the glass film is cut at the cutting portion.
  6. 　前記貼着部が、前記ガラスフィルムの上面に前記保護テープを貼着すると共に、
    　前記ガラスフィルムの下面側に前記巻取ローラを配置し、前記保護テープが貼着された面が外側になるように前記ガラスフィルムを巻取回収することを特徴とする請求項５に記載のガラスフィルムの製造方法。     The sticking section sticks the protective tape on the upper surface of the glass film, and
    6. The glass according to claim 5, wherein the winding roller is disposed on the lower surface side of the glass film, and the glass film is wound and recovered so that the surface to which the protective tape is attached is on the outside. How to make a film.
  7. 　前記ガラスフィルムの上面側から供給される保護シートを前記ガラスフィルムよりも先に前記巻取ローラに巻回した後、前記ガラスフィルムの前記保護テープが貼着された面に前記保護シートを重ねた状態で、前記ガラスフィルム及び前記保護シートを前記巻取ローラで巻取回収することを特徴とする請求項６に記載のガラスフィルムの製造方法。 The protective sheet supplied from the upper surface side of the glass film is wound around the winding roller before the glass film, and then the protective sheet is stacked on the surface of the glass film to which the protective tape is attached. The method for producing a glass film according to claim 6, wherein the glass film and the protective sheet are wound up and collected by the winding roller in a state.
PCT/JP2018/025912 2017-07-31 2018-07-09 Method for producing glass film WO2019026556A1 (en)

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