WO2016042964A1 - Procédé de fabrication d'un film stratifié polarisant, et film étiré équipé d'un film protecteur - Google Patents

Procédé de fabrication d'un film stratifié polarisant, et film étiré équipé d'un film protecteur Download PDF

Info

Publication number
WO2016042964A1
WO2016042964A1 PCT/JP2015/073186 JP2015073186W WO2016042964A1 WO 2016042964 A1 WO2016042964 A1 WO 2016042964A1 JP 2015073186 W JP2015073186 W JP 2015073186W WO 2016042964 A1 WO2016042964 A1 WO 2016042964A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
polyvinyl alcohol
resin layer
stretched
protective film
Prior art date
Application number
PCT/JP2015/073186
Other languages
English (en)
Japanese (ja)
Inventor
薫 川▲崎▼
Original Assignee
住友化学株式会社
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 住友化学株式会社 filed Critical 住友化学株式会社
Priority to CN201580049968.6A priority Critical patent/CN106687834B/zh
Priority to KR1020177008845A priority patent/KR102417465B1/ko
Publication of WO2016042964A1 publication Critical patent/WO2016042964A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/14—Printing or colouring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B43/00—Operations specially adapted for layered products and not otherwise provided for, e.g. repairing; Apparatus therefor
    • B32B43/006—Delaminating
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks

Definitions

  • the present invention relates to a method for producing a polarizing laminated film and a stretched film with a protective film.
  • the polarizing plate is widely used as a polarized light supplying element and a polarized light detecting element in a liquid crystal display device.
  • a polarizing plate a polarizing film made of polyvinyl alcohol resin and a protective film made of triacetyl cellulose are conventionally used.
  • mobile devices such as liquid crystal display notebook personal computers and mobile phones. Thinner and lighter weights are being demanded with the development of TVs and large TVs.
  • a solution containing a polyvinyl alcohol-based resin is applied to the surface of a base film to provide a resin layer, and then stretched and then dyed to have a polarizer layer.
  • a polarizing laminate film is prepared and used as a polarizing plate as it is, or a protective film is bonded to the polarizer layer and then a substrate film is peeled off and used as a polarizing plate. (See, for example, International Publication Nos. 2013/114532, 2011-2816, and 2012-73570).
  • a protective film when bonded to the surface of the polyvinyl alcohol-based resin layer, it may interfere with the polyvinyl alcohol-based resin layer when peeling it, causing a problem that the polyvinyl alcohol-based resin layer is peeled off from the base film. there were.
  • the polyvinyl alcohol-based resin layer after the protective film is bonded to the surface of the polyvinyl alcohol-based resin layer, when the end portion in the width direction of the entire film is cut off to align the ends, the polyvinyl alcohol-based resin layer is more than the base film.
  • the polyvinyl alcohol-based resin layer is easily peeled off from the base film when the protective film is peeled off.
  • a polyvinyl alcohol-based resin layer is provided on the surface of a base film to form a laminated film, and after stretching, a protective film is pasted on the surface of the polyvinyl alcohol-based resin layer, wound, and then unwound
  • a production method for obtaining a polarizing laminate film by dyeing after the protective film is peeled off, and a production method capable of suppressing the peeling of the polyvinyl alcohol-based resin layer from the base film when the protective film is peeled off The purpose is to provide. It is another object of the present invention to provide a stretched film with a protective film in which the polyvinyl alcohol-based resin layer is hardly peeled off from the base film even when the protective film is peeled off.
  • the present invention includes the following.
  • the stretched film with a protective film is a polarizing laminated film in which the positions of both end portions in the width direction of the polyvinyl alcohol-based resin layer and both end portions in the width direction of the protect film are not coincident.
  • both end portions in the width direction of the protect film are located on the inner side than both end portions in the width direction of the polyvinyl alcohol-based resin layer, [1] or The manufacturing method of the light-polarizing laminated film as described in [2].
  • the width of the protect film is the polyvinyl alcohol.
  • both end portions in the width direction of the protect film are positioned outside both end portions in the width direction of the polyvinyl alcohol-based resin layer, [1] or The manufacturing method of the light-polarizing laminated film as described in [2].
  • a stretched film end removing step of cutting and removing the end in the width direction of the stretched film before the pasting step, and in the pasting step, the width of the protective film is the polyvinyl alcohol.
  • a stretched film with a long protective film comprising: A stretched film with a protective film, wherein the positions of both end portions in the width direction of the polyvinyl alcohol-based resin layer are not aligned with the positions of both end portions in the width direction of the protect film.
  • the production method of the present invention after providing a polyvinyl alcohol resin layer on the surface of the base film, stretching, winding the protective film after bonding, unwinding the protective film after unwinding, and stretching the film
  • stretching, winding the protective film after bonding, unwinding the protective film after unwinding, and stretching the film In producing a polarizing laminated film by dyeing or the like, peeling of the polyvinyl alcohol-based resin layer from the base film when peeling the protective film can be suppressed.
  • FIG. 1 is a flowchart showing a method for producing a polarizing laminate film of the present invention.
  • the production method of the present invention includes a resin layer forming step (S10) in which a polyvinyl alcohol-based resin layer is formed on a base film to obtain a laminated film, and a stretching step (S20) in which the laminated film is drawn to obtain a stretched film.
  • the winding process (S40) to take, the peeling process (S50) which unwinds the stretched film with a protective film and peels the protective film from the stretched film, and the dyeing process (S60) to dye the stretched film are included in this order.
  • the polyvinyl alcohol-based resin layer becomes a polarizer layer, and a polarizing laminated film is produced.
  • the positions of both end portions in the width direction of the polyvinyl alcohol-based resin layer and both end portions in the width direction of the protect film do not match.
  • the both ends of the polyvinyl alcohol-based resin layer in the width direction are bonded so that the positions of the both ends in the width direction of the protective film do not coincide with each other.
  • both ends of the stretched film with a protective film are cut, that is, both ends in the width direction of the polyvinyl alcohol-based resin layer and the width of the protective film. Both ends in the direction are cut at the same time so that the process of aligning both ends is not performed.
  • the positions of both ends in the width direction of the polyvinyl alcohol-based resin layer and both ends in the width direction of the protective film are not coincident.
  • interference between the protective film and the end portion of the polyvinyl alcohol-based resin layer can be suppressed, and when the protective film is peeled from the stretched film in the peeling step (S50), the polyvinyl alcohol-based resin layer is the base material. It can prevent peeling from the film.
  • both ends of the stretched film with a protective film are cut off to align the ends of the polyvinyl alcohol-based resin layer and the protective film, both ends are not only aligned but the ends of both are crushed.
  • the polyvinyl alcohol-based resin layer is more easily peeled off from the base film in the peeling step (S50) starting from this part. Such a problem does not occur.
  • the production method of the present invention protects the surface of the polyvinyl alcohol-based resin layer by having a bonding step (S30) for bonding the protective film to the stretched film before the winding step (S40), and also protects the surface of the polyvinyl alcohol resin layer.
  • a bonding step (S30) for bonding the protective film to the stretched film before the winding step (S40) and also protects the surface of the polyvinyl alcohol resin layer.
  • the slipperiness of the outermost surface of the film to be wound can be improved and the stretched film can be stably wound into a roll.
  • the back surface of the base film is transferred to the surface of the polyvinyl alcohol-based resin layer and the quality is deteriorated, and the surface of the polyvinyl alcohol-based resin layer is slipped. Since the property is very bad, it is difficult to stably wind up the film and lengthen the film.
  • FIGS. 2 to 4 are top perspective views schematically illustrating the bonding step (S30) of the present invention. 2 to 4, (a) shows the stretched film 1 before the bonding step (S30), and (b) shows the stretched film 3 with a protective film after the bonding step (S30).
  • a protective film end portion removing step (S70) or a stretched film end portion removing step (S80) described later is performed,
  • the stretched film 3 with a protect film shown in each of FIGS. 2 to 4 is after the protect film end portion removing step (S70) or the stretched film end portion removing step (S80) and before the winding step (S40). Shows the state.
  • the protective film 2 is bonded to the stretched film 1, and the stretched film 3 with a protective film is formed.
  • 2 to 4 exemplify the stretched film 1 in which both ends of the base film according to the present invention and the polyvinyl alcohol-based resin layer are coincident with each other. It may be used.
  • both end portions 2 a and 2 b in the width direction of the protect film 2 are positioned at both end portions in the width direction of the stretched film 1 (positions at both end portions of the polyvinyl alcohol-based resin layer). 1a and 1b).
  • the protective film 2 does not touch both ends of the polyvinyl alcohol-based resin layer, so that the protective film 2 is peeled from the stretched film 1 in the peeling step (S50). In that case, the force in the peeling direction is less likely to be applied to the end of the polyvinyl alcohol-based resin layer, and the polyvinyl alcohol-based resin layer can be more effectively prevented from peeling from the base film.
  • both end portions 2a and 2b in the width direction of the protect film 2 are positioned at both end portions in the width direction of the stretched film 1 (positions of both end portions of the polyvinyl alcohol-based resin layer). (Coincides with) 1a and 1b.
  • one end 2 a in the width direction of the protect film 2 is the end in the width direction of the stretched film 1 (the position of the end of the polyvinyl alcohol-based resin layer).
  • the other end 2b in the width direction of the protective film is the end in the width direction of the stretched film 1 (matches the position of the end of the polyvinyl alcohol-based resin layer) 1b.
  • the positional deviation W from the portion (one end in the width direction of the polyvinyl alcohol-based resin layer) is preferably 1 mm or more, more preferably 1 mm or more and less than 7 mm, and further 2 mm or more and 5 mm or less. Preferably there is.
  • the positional deviation W is set to be less than 7 mm, the end portions where the protective film 2 and the stretched film 1 are not laminated are bent and difficult to carry, or the stretched films of the portions not covered by the protective film 2 It is possible to avoid the occurrence of problems such as sticking and peeling off.
  • a protective film end removing step (S70) for cutting and removing the end portion so that the width of the protective film becomes a predetermined width may be provided.
  • a stretched film edge removing step (S80) in which the edge is cut and removed so that the width of the film becomes a predetermined width may be provided.
  • the widths of the protective film and the stretched film constituting the stretched film with the protective film can be arbitrarily adjusted without carrying out the process of cutting and removing at the same time both ends and the widthwise ends of the protective film, It is possible to prevent the end portion from being folded or winding failure in the step (S40).
  • the protective film edge removal step (S70) and the stretched film edge removal step (S80) may be performed before the bonding step (S30) or after the bonding step (S30).
  • this step is a step that does not affect other steps for producing a stretched film, and the timing thereof is particularly limited. No, before the resin layer forming step (S10), after the resin layer forming step (S10) and before the stretching step (S20), after the stretching step (S20) and bonding step (S30). Before or simultaneously with any step.
  • the positional shift W after cutting the edge of the protection film or stretched film is It is preferable to be within the above numerical range, and the positional shift W immediately after the bonding step (S30) may not be within the above numerical range.
  • FIG. 5 schematically shows a protective film end portion removing step (S70), a stretched film end portion removing step (S80), and a laminating step (S30) in the method for producing a polarizing laminated film of the first embodiment.
  • the end is cut so that the width of the protect film 2 becomes a predetermined width
  • the stretched film end removing step (S80) the stretched film
  • the width of the protective film 2 used in the subsequent bonding step (S30) is adjusted so that the width of the stretched film 1 is smaller than the width of the stretched film 1.
  • the stretched film 1 and the protect film 2 are bonded, and the stretched film 3 with a protect film is produced.
  • both ends in the width direction of the protect film 2 are in the width direction of the stretched film 1 in the same manner as the stretched film 3 with a protect film shown in FIG. Are located on the inner side than the both end portions (corresponding to the positions of both end portions of the polyvinyl alcohol-based resin layer).
  • the manufacturing method of the light-polarizing laminated film of this embodiment performs a protective film edge part removal process (S70) before a bonding process (S30), and a stretched film edge part removal process after a bonding process (S30). (S80) is performed.
  • FIG. 6 schematically shows a protective film edge removal step (S70), a bonding step (S30), and a stretched film edge removal step (S80) in the method for producing a polarizing laminated film of the second embodiment.
  • the width of the protective film 2 is a predetermined width shorter than the width of the stretched film 1 bonded in the bonding step (S30). The end is cut off. And in the bonding process (S30), the stretched film 1 and the protective film 2 are bonded, and the stretched film 3 with a protective film is produced. Thereafter, in the stretched film end removing step (S80), the stretched film 1 is cut and removed so that the width becomes a predetermined width.
  • both ends in the width direction of the protect film 2 are stretched film 1 as in the stretched film 3 with a protective film shown in FIG. It is located inside the both ends of the width direction (which coincides with the positions of both ends of the polyvinyl alcohol-based resin layer).
  • the manufacturing method of the light-polarizing laminated film of this embodiment performs a stretched film edge part removal process (S80) before a bonding process (S30), and protect film edge part removal process after a bonding process (S30). (S70) is performed.
  • FIG. 7 schematically shows a stretched film edge removing step (S80), a bonding step (S30), and a protective film edge removing step (S70) in the method for producing a polarizing laminated film of the third embodiment.
  • the width of the stretched film 1 becomes a predetermined width that is narrower than the width of the protect film 2 to be pasted in the pasting step (S30). The end is cut off. And in the bonding process (S30), the stretched film 1 and the protective film 2 are bonded, and the stretched film 3 with a protective film is produced. Thereafter, in the protect film end removing step (S70), the end of the protect film 2 is cut and removed so that the width becomes a predetermined width.
  • both ends in the width direction of the protective film 2 are stretched film 1 as in the stretched film 3 with a protective film shown in FIG. It is located outside the both ends of this width direction (it corresponds with the position of the both ends of a polyvinyl alcohol-type resin layer).
  • a polyvinyl alcohol-based resin layer is formed on at least one surface of the base film. Materials suitable for the base film will be described later. In addition, it is preferable to use what can be extended
  • the thickness of the polyvinyl alcohol resin layer to be formed is preferably more than 3 ⁇ m and not more than 30 ⁇ m, more preferably 5 to 20 ⁇ m. If it is 3 ⁇ m or less, the film becomes too thin after stretching and the dyeability is remarkably deteriorated. If it exceeds 30 ⁇ m, the thickness of the finally obtained polarizer layer may exceed 10 ⁇ m.
  • the polyvinyl alcohol-based resin layer is preferably dried by applying a polyvinyl alcohol-based resin solution obtained by dissolving a polyvinyl alcohol-based resin powder in a good solvent onto one surface of the base film and evaporating the solvent. It is formed by doing. By forming the polyvinyl alcohol-based resin layer in this way, it can be formed thin.
  • a method of applying a polyvinyl alcohol resin solution to a base film a wire bar coating method, a reverse coating, a roll coating method such as gravure coating, a die coating method, a comma coating method, a lip coating method, a spin coating method, a screen coating method.
  • a method, a fountain coating method, a dipping method, a spray method, and the like can be appropriately selected from known methods and employed.
  • the drying temperature is, for example, 50 to 200 ° C., preferably 60 to 150 ° C.
  • the drying time is, for example, 2 to 20 minutes.
  • a primer layer may be provided on the surface of the base film on which the polyvinyl alcohol resin layer is formed.
  • the primer layer is preferably formed from a composition containing a crosslinking agent or the like in a polyvinyl alcohol resin from the viewpoint of adhesion.
  • thermoplastic resins excellent in transparency, mechanical strength, thermal stability, stretchability, etc. are used, and depending on their glass transition temperature (Tg) or melting point (Tm).
  • Tg glass transition temperature
  • Tm melting point
  • An appropriate resin can be selected.
  • thermoplastic resins include polyolefin resins, polyester resins, cyclic polyolefin resins (norbornene resins), (meth) acrylic resins, cellulose ester resins, polycarbonate resins, polyvinyl alcohol resins, vinyl acetate.
  • the base film may be a single layer using only one kind of the above-described resin, or may be a blend of two or more kinds of resins.
  • a multilayer film may be formed instead of a single layer.
  • polystyrene-based resin examples include polyethylene and polypropylene, which are preferable because they can be stably stretched at a high magnification.
  • a propylene-ethylene copolymer obtained by copolymerizing propylene with ethylene can also be used. Copolymerization is possible with monomers other than ethylene, and examples of other types of monomers copolymerizable with propylene include ⁇ -olefins.
  • ⁇ -olefin an ⁇ -olefin having 4 or more carbon atoms is preferably used, and more preferably an ⁇ -olefin having 4 to 10 carbon atoms.
  • ⁇ -olefin having 4 to 10 carbon atoms include, for example, linear monoolefins such as 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene and 1-decene; Branched monoolefins such as 3-methyl-1-butene, 3-methyl-1-pentene and 4-methyl-1-pentene; vinylcyclohexane and the like.
  • the copolymer of propylene and other monomers copolymerizable therewith may be a random copolymer or a block copolymer.
  • the content of the structural unit derived from the other monomer in the copolymer is determined by infrared (IR) spectrum according to the method described on page 616 of “Polymer Analysis Handbook” (1995, published by Kinokuniya). It can be obtained by measuring.
  • IR infrared
  • propylene resins constituting the propylene resin film propylene homopolymer, propylene-ethylene random copolymer, propylene-1-butene random copolymer, and propylene-ethylene-1-butene Random copolymers are preferably used.
  • the stereoregularity of the propylene resin constituting the propylene resin film is preferably substantially isotactic or syndiotactic.
  • a propylene-based resin film made of a propylene-based resin having substantially isotactic or syndiotactic stereoregularity has relatively good handleability and excellent mechanical strength in a high-temperature environment.
  • the polyester resin is a polymer having an ester bond, and is mainly a polycondensate of a polyvalent carboxylic acid and a polyhydric alcohol.
  • the polyvalent carboxylic acid used is mainly a dicarboxylic acid, that is, a divalent carboxylic acid, or a lower alkyl ester thereof, and examples thereof include terephthalic acid, isophthalic acid, dimethyl terephthalate, and dimethyl naphthalenedicarboxylate.
  • the polyhydric alcohol used is also mainly a diol, that is, a divalent alcohol, and examples thereof include propanediol, butanediol, neopentyl glycol, and cyclohexanedimethanol.
  • polyester resin is polyethylene terephthalate which is a copolymer of terephthalic acid and ethylene glycol.
  • Polyethylene terephthalate is a crystalline resin, but the one in a state before crystallization treatment is more easily subjected to treatment such as stretching. If necessary, it can be crystallized during stretching or by heat treatment after stretching.
  • a copolymerized polyester whose crystallinity is lowered (or made amorphous) by further copolymerizing another monomer with a polyethylene terephthalate skeleton is also preferably used.
  • resins for example, those obtained by copolymerization of cyclohexanedimethanol, isophthalic acid or the like are preferably used. These resins are also excellent in stretchability and can be suitably used.
  • polyester resins other than polyethylene terephthalate and copolymers thereof include polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polytrimethylene terephthalate, polytrimethylene naphthalate, polycyclohexane dimethyl terephthalate, polycyclohexane. And dimethyl naphthalate. These blend resins and copolymers can also be suitably used.
  • cyclic polyolefin resin a norbornene resin is preferably used.
  • the cyclic polyolefin resin is a general term for resins that are polymerized using a cyclic olefin as a polymerization unit, and is described, for example, in JP-A-1-240517, JP-A-3-14882, JP-A-3-122137, and the like. Resin.
  • cyclic olefin ring-opening (co) polymers examples include cyclic olefin addition polymers, copolymers of cyclic olefins and ⁇ -olefins such as ethylene and propylene (typically random copolymers), And graft polymers obtained by modifying them with an unsaturated carboxylic acid or a derivative thereof, and hydrides thereof.
  • cyclic olefin include norbornene monomers.
  • cyclic polyolefin resins Various products are commercially available as cyclic polyolefin resins. Specific examples include TOPAS (registered trademark) (Topas Advanced Polymers GmbH), Arton (registered trademark) (manufactured by JSR Corporation), ZEONOR (registered trademark) (manufactured by Nippon Zeon Corporation), Zeonex ( ZEONEX (registered trademark) (manufactured by ZEON Corporation), Apel (registered trademark) (manufactured by Mitsui Chemicals, Inc.).
  • TOPAS registered trademark
  • Arton registered trademark
  • ZEONOR registered trademark
  • Zeonex ZEONEX
  • ZEON Corporation manufactured by ZEON Corporation
  • Apel registered trademark
  • any appropriate (meth) acrylic resin can be adopted as the (meth) acrylic resin.
  • polymethacrylate such as polymethylmethacrylate, methyl methacrylate- (meth) acrylic acid copolymer, methyl methacrylate- (meth) acrylic acid ester copolymer, methyl methacrylate-acrylic acid ester- (meta ) Acrylic acid copolymer, methyl methacrylate-styrene copolymer (MS resin, etc.), polymer having alicyclic hydrocarbon group (for example, methyl methacrylate- (meth) acrylic acid cyclohexyl copolymer, methacrylic acid) Methyl- (meth) acrylate norbornyl copolymer, etc.).
  • a polymer mainly composed of a C 1 -C 6 alkyl ester of methacrylic acid such as polymethyl methacrylate is used.
  • the (meth) acrylic resin a methyl methacrylate resin containing methyl methacrylate as a main component (50 to 100% by weight, preferably 70 to 100% by weight) is more preferably used.
  • Cellulose ester resin is an ester of cellulose and fatty acid.
  • a cellulose ester resin include cellulose triacetate, cellulose diacetate, cellulose tripropionate, and cellulose dipropionate.
  • these copolymers and those in which a part of the hydroxyl group is modified with other types of substituents are also included.
  • cellulose triacetate is particularly preferable.
  • Many products of cellulose triacetate are commercially available, which is advantageous in terms of availability and cost.
  • Examples of commercially available cellulose triacetate include Fujitac (registered trademark) TD80 (manufactured by Fuji Film Co., Ltd.), Fujitac (registered trademark) TD80UF (manufactured by Fuji Film Co., Ltd.), and Fujitac (registered trademark) TD80UZ (Fuji Film (manufactured by Fujifilm Corporation). Co., Ltd.), Fujitac (registered trademark) TD40UZ (Fuji Film Co., Ltd.), KC8UX2M (Konica Minolta Co., Ltd.), KC4UY (Konica Minolta Co., Ltd.), and the like.
  • Polycarbonate resin is an engineering plastic made of a polymer in which monomer units are bonded via a carbonate group, and is a resin having high impact resistance, heat resistance, and flame retardancy. Moreover, since it has high transparency, it is suitably used in optical applications. For optical applications, resins called modified polycarbonates in which the polymer skeleton is modified to lower the photoelastic coefficient, copolymerized polycarbonates with improved wavelength dependency, and the like are also commercially available and can be suitably used.
  • Such polycarbonate resins are widely commercially available.
  • Panlite registered trademark
  • Iupilon registered trademark
  • SD Polyca registered trademark
  • Caliber registered trademark
  • any appropriate additive may be added to the base film in addition to the above thermoplastic resin.
  • additives include ultraviolet absorbers, antioxidants, lubricants, plasticizers, mold release agents, anti-coloring agents, flame retardants, nucleating agents, antistatic agents, pigments, and coloring agents.
  • the content of the thermoplastic resin exemplified above in the base film is preferably 50 to 100% by weight, more preferably 50 to 99% by weight, still more preferably 60 to 98% by weight, and particularly preferably 70 to 97%. % By weight. This is because, if the content of the thermoplastic resin in the base film is less than 50% by weight, the high transparency inherent in the thermoplastic resin may not be sufficiently exhibited.
  • the thickness of the base film can be determined as appropriate, but generally it is preferably 1 to 500 ⁇ m, more preferably 1 to 300 ⁇ m, and even more preferably 5 to 200 ⁇ m from the viewpoint of workability such as strength and handleability.
  • the thickness of the base film is most preferably 5 to 150 ⁇ m.
  • the base film may be subjected to corona treatment, plasma treatment, flame treatment or the like on at least the surface on which the resin layer is formed in order to improve the adhesion with the resin layer.
  • a base film here means what does not contain an adhesive bond layer, a corona treatment layer, etc.
  • the polyvinyl alcohol resin used in the polyvinyl alcohol resin layer preferably has a saponification degree of 90 to 100 mol%, and may be modified polyvinyl alcohol partially modified.
  • the average degree of polymerization of the polyvinyl alcohol resin is not particularly limited, but is preferably 100 to 10,000, and more preferably 1500 to 10,000.
  • Examples of the polyvinyl alcohol resin giving such characteristics include PVA124 (degree of saponification: 98.0 to 99.0 mol%) and PVA117 (degree of saponification: 98.0 to 99.0) manufactured by Kuraray Co., Ltd. Mol%), PVA624 (degree of saponification: 95.0-96.0 mol%), PVA617 (degree of saponification: 94.5-95.5 mol%), etc .; for example, AH manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
  • the laminated film composed of the base film and the polyvinyl alcohol-based resin layer is preferably uniaxially stretched.
  • uniaxial stretching is performed so that the stretching ratio is more than 5 times and not more than 17 times. More preferably, it is uniaxially stretched so that the stretch ratio is more than 5 times and not more than 8 times.
  • the draw ratio is 5 times or less, the resin layer made of the polyvinyl alcohol-based resin is not sufficiently oriented, and as a result, the degree of polarization of the polarizer layer may not be sufficiently high.
  • the thickness of the stretched film after the stretching step (S20) is preferably 5 to 150 ⁇ m.
  • the stretching process in the stretching step (S20) is not limited to one-stage stretching, and can be performed in multiple stages.
  • the second and subsequent stretching processes may be performed in the stretching process (S20), but may be performed simultaneously with the subsequent dyeing process (S60), the crosslinking process, and the like.
  • stretching process is performed so that it may become a draw ratio exceeding 5 times combining all the steps of an extending
  • a longitudinal stretching process performed in the longitudinal direction of the laminated film a lateral stretching process stretching in the width direction, or the like can be employed.
  • the longitudinal stretching method include an inter-roll stretching method and a compression stretching method
  • examples of the transverse stretching method include a tenter method.
  • the stretching treatment either a wet stretching method or a dry stretching method can be adopted, but the use of the dry stretching method is preferable in that the temperature for stretching the laminated film can be selected from a wide range.
  • a protective film is bonded to the surface of the polyvinyl alcohol resin layer opposite to the surface on the base film side to obtain a stretched film with a protective film.
  • the protective film may be bonded to the surface of one polyvinyl alcohol resin layer.
  • Examples of the method for bonding the protective film to the stretched film include a method in which the stretched film and the protective film are stacked and pressed with a nip roll and bonded.
  • the material of the nip roll can be metal, rubber or the like.
  • the protective film is not particularly limited as long as it is a film that is in close contact with the stretched film and can be wound in the winding step (S40), and a commercially available protective film can be used.
  • the adhesion strength of the protective film to the stretched film is preferably 0.02 to 0.08 N / 25 mm.
  • the thickness of the protective film is preferably 1 to 100 ⁇ m, more preferably 1 to 80 ⁇ m, and even more preferably 1 to 50 ⁇ m from the viewpoint of workability such as strength and handleability.
  • Examples of commercially available protect films include Tretec 7332 (manufactured by Toray Film Processing Co., Ltd.), protect tape # 625T (manufactured by Sekisui Chemical Co., Ltd.), and the like.
  • the cutting of the edge of the protective film or the stretched film in the protective film edge removing step (S70) or the stretched film edge removing step (S80) is not particularly limited.
  • a slit method using a slitter is used. Can be mentioned. This method is preferable in that the end of the long film can be continuously cut and removed.
  • Examples of the slitting method include a method in which two circular blades called shear blades are used to rotate the film according to the conveyance of the film while making contact with the lower blade with the upper blade, and a razor blade called a leather blade.
  • There are a method of using a method of pressing a blade called a score blade against a quenching roll or the like and slitting.
  • Even with the method using a leather blade there is a hollow cut that slits in the air without providing a backup guide, and a groove roll method that stabilizes the meandering of the slit by inserting the blade into a roll with a groove as a backup guide .
  • a slit method using a shear blade that can easily change the slit position of the film is preferably used.
  • the part removed by the slit is discharged from the production line.
  • the discharging method can be arbitrarily selected as long as the effect of the present invention is obtained.
  • the portion removed by the slit may be discharged from the production line as it is, or may be discharged from the production line after passing through the same route as the cut film in a certain section.
  • Winding process (S40) the stretched film with a protective film is wound in a roll shape so that the protective film is on the upper surface. At the time of winding, the film is wound so as to be in contact with the protective film, so that the polyvinyl alcohol resin layer or the like can be wound up without being contaminated, and the subsequent unwinding can be performed cleanly and smoothly.
  • the stretched film with the protective film is unwound from the wound roll, and the peeling step (S50) for peeling the protective film from the stretched film is performed, followed by stretching to the dyeing step (S60).
  • the protective film peeling method is not particularly limited.
  • the protective film peeled off from the stretched film is preferably wound on a winding shaft. At this time, the protective film may be peeled off by hand and wound around the take-up shaft, or may be adsorbed by a suction roll and conveyed to the take-up shaft and taken up. It is preferable to spray static elimination air on the peeling site.
  • the polyvinyl alcohol resin layer of the stretched film is dyed with a dichroic dye.
  • the dichroic dye include iodine and organic dyes.
  • organic dyes include Red BR, Red LR, Red R, Pink LB, Rubin BL, Bordeaux GS, Sky Blue LG, Lemon Yellow, Blue BR, Blue 2R, Navy RY, Green LG, Violet LB, Violet B, Black H, Black B, Black GSP, Yellow 3G, Yellow R, Orange LR, Orange 3R, Scarlet GL, Scarlet KGL, Congo Red, Brilliant Violet BK, Spura Blue G, Spura Blue GL, Spura Orange GL, Direct Sky Blue, Direct First Orange S, First Black, etc. can be used.
  • One kind of these dichroic substances may be used, or two or more kinds may be used in combination.
  • the dyeing step is performed, for example, by immersing the entire stretched film in a solution (dye solution) containing the dichroic dye.
  • a solution in which the above dichroic dye is dissolved in a solvent can be used.
  • a solvent for the dyeing solution water is generally used, but an organic solvent compatible with water may be further added.
  • the concentration of the dichroic dye is preferably 0.01 to 10% by weight, more preferably 0.02 to 7% by weight, and particularly preferably 0.025 to 5% by weight.
  • iodine When iodine is used as the dichroic dye, it is preferable to further add an iodide because the dyeing efficiency can be further improved.
  • the iodide include potassium iodide, lithium iodide, sodium iodide, zinc iodide, aluminum iodide, lead iodide, copper iodide, barium iodide, calcium iodide, tin iodide, and iodide.
  • examples include titanium.
  • the addition ratio of these iodides is preferably 0.01 to 20% by weight in the dyeing solution.
  • the ratio of iodine to potassium iodide is preferably in the range of 1: 5 to 1: 100, more preferably in the range of 1: 6 to 1:80 by weight. , Particularly preferably in the range of 1: 7 to 1:70.
  • the immersion time of the stretched film in the dyeing solution is not particularly limited, but it is usually preferably in the range of 15 seconds to 15 minutes, and more preferably 30 seconds to 3 minutes.
  • the temperature of the dyeing solution is preferably in the range of 10 to 60 ° C., more preferably in the range of 20 to 40 ° C.
  • a crosslinking step is usually performed.
  • the cross-linking step can be performed, for example, by immersing the laminated film that has undergone the dyeing step (S60) in a solution containing a cross-linking agent (cross-linking solution).
  • cross-linking solution Conventionally known substances can be used as the crosslinking agent. Examples thereof include boron compounds such as boric acid and borax, glyoxal, and glutaraldehyde. One kind of these may be used, or two or more kinds may be used in combination.
  • crosslinking solution a solution in which a crosslinking agent is dissolved in a solvent can be used.
  • solvent for example, water can be used, but an organic solvent compatible with water may be further included.
  • concentration of the crosslinking agent in the crosslinking solution is not limited to this, but is preferably in the range of 1 to 20% by weight, and more preferably 6 to 15% by weight.
  • An iodide may be added to the crosslinking solution. By adding iodide, the in-plane polarization characteristics of the resin layer can be made more uniform.
  • the iodide include potassium iodide, lithium iodide, sodium iodide, zinc iodide, aluminum iodide, lead iodide, copper iodide, barium iodide, calcium iodide, tin iodide, and titanium iodide. Is mentioned.
  • the iodide content is 0.05 to 15% by weight, more preferably 0.5 to 8% by weight.
  • the immersion time of the laminated film in the crosslinking solution is usually preferably from 15 seconds to 20 minutes, and more preferably from 30 seconds to 15 minutes.
  • the temperature of the crosslinking solution is preferably in the range of 10 to 90 ° C.
  • the crosslinking step can be performed simultaneously with the dyeing step by blending a crosslinking agent in the dyeing solution. Moreover, what was previously extended
  • a washing step it is preferable to perform a washing step after the crosslinking step.
  • a water washing treatment can be performed.
  • the water washing treatment can usually be performed by immersing the stretched film in pure water such as ion exchange water or distilled water.
  • the water washing temperature is usually in the range of 3 to 50 ° C., preferably 4 to 20 ° C.
  • the immersion time is usually 2 to 300 seconds, preferably 3 to 240 seconds.
  • washing treatment with an iodide solution and water washing treatment may be combined, and a solution in which liquid alcohol such as methanol, ethanol, isopropyl alcohol, butanol, propanol or the like is appropriately blended may be used.
  • liquid alcohol such as methanol, ethanol, isopropyl alcohol, butanol, propanol or the like
  • the polyvinyl alcohol-based resin layer has a function as a polarizer, and a polarizing laminated film is obtained.
  • the polyvinyl alcohol-type resin layer which has a function as a polarizer is called a polarizer layer.
  • the polarizing laminated film manufactured by the above manufacturing method can be used as it is or further processed to obtain a polarizing plate having a polarizer layer.
  • a polarizing plate can be used as a polarizing plate for various display devices including a liquid crystal display device.
  • a base film roll having a three-layer structure in which a resin layer made of homopolypropylene (“Sumitomo Nobrene FLX80E4” manufactured by Sumitomo Chemical Co., Ltd., melting point Tm 163 ° C.), which is a homopolymer of propylene, is disposed on a multilayer extruder. It was produced by the coextrusion molding used.
  • the total thickness of the obtained base film roll was 90 ⁇ m, and the thickness ratio (FLX80E4 / W151 / FLX80E4) of each layer was 3/4/3.
  • Resin layer forming step Polyvinyl alcohol powder (manufactured by Kuraray Co., Ltd., average polymerization degree 2400, average saponification degree 98.0 to 99.0 mol%, trade name: PVA124) is dissolved in hot water at 95 ° C. A polyvinyl alcohol aqueous solution having a concentration of 8% by weight was prepared. The obtained aqueous solution was applied onto the primer layer using a lip coater and dried at 80 ° C. for 20 minutes to produce a laminated film consisting of a base film, a primer layer, and a polyvinyl alcohol resin layer. .
  • Stretched film edge removal step protect film edge removal step
  • the edge of the obtained stretched film was slit with a shear blade (stretched film edge removal step).
  • a polyethylene protective film manufactured by Toray Film Processing Co., Ltd., trade name: TRETECH 7332, thickness 30 ⁇ m
  • the protective film was bonded to the polyvinyl alcohol resin layer side of the stretched film using a nip roll. At this time, the protect film was made to be the upper surface when the stretched film with the protect film was wound, and the misalignment between the end of the protect film and the end of the stretched film was 5 mm at both ends.
  • Dyeing process and cross-linking process were performed in the following procedure.
  • the stretched film is changed to 90 ° C. dyeing solution (solution containing 0.6 parts by weight of iodine and 10 parts by weight of potassium iodide with respect to 100 parts by weight of water), which is an aqueous solution containing iodine and potassium iodide.
  • dyeing solution solution containing 0.6 parts by weight of iodine and 10 parts by weight of potassium iodide with respect to 100 parts by weight of water
  • crosslinking solution solution containing 9.5 parts by weight of boric acid and 5 parts by weight of potassium iodide with respect to 100 parts by weight of water
  • crosslinking solution solution containing 9.5 parts by weight of boric acid and 5 parts by weight of potassium iodide with respect to 100 parts by weight of water
  • a polarizer layer was formed from the polyvinyl alcohol-based resin layer to obtain a polarizing laminated film.
  • the protective film was peeled off, no troubles such as peeling off the polyvinyl alcohol resin layer were confirmed.
  • Comparative Example 1 In Comparative Example 1, the same steps as in (1) to (4) of Example 1 were performed, and the protective film was removed using the nip roll without performing the stretched film edge removal step and the protection film edge removal step. The pasting process of pasting to a stretched film was performed. Then, about the stretched film with a protective film produced by the bonding process, the edge part of the stretched film and the protective film was slit simultaneously, and the process which aligns an edge part was performed.
  • Example 1 For the stretched film with a protective film produced as described above, the same steps as in the above (7) and (8) of Example 1 were performed. However, when the protective film is peeled off in the peeling step, the polyvinyl alcohol-based resin layer is peeled off from the base film starting from the slit end, and the polyvinyl alcohol-based resin layer can be dyed in the dyeing step. There wasn't.
  • the polarizing laminated film produced by the production method of the present invention can be applied as it is or processed as a polarizing plate for various display devices including liquid crystal display devices.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polarising Elements (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

　L'invention concerne un film étiré (1). Une étape de fixation (S30) qui permet de fixer un film protecteur (2) à la surface d'une couche de résine d'alcool polyvinylique sur son côté inverse à partir d'un film de substrat et d'obtenir un film étiré (3) équipé d'un film protecteur, une étape d'enroulement (S40) qui permet d'enrouler le film étiré (3) équipé d'un film protecteur, une étape de pelage (S50) permet de dérouler le film étiré (3) équipé d'un film protecteur et de peler le film protecteur (2) à partir du film étiré (1), et une étape de coloration (S60) qui permet de colorer le film étiré (1) et d'obtenir un film stratifié polarisant sont incluses dans cet ordre, et dans l'étape d'enroulement (S40), le film étiré (3) équipé d'un film protecteur est conçu de telle sorte que les positions des deux extrémités de la couche de résine d'alcool polyvinylique dans son sens de la largeur et les positions des deux extrémités du film protecteur (2) dans son sens de la largeur ne coïncident pas.
PCT/JP2015/073186 2014-09-18 2015-08-19 Procédé de fabrication d'un film stratifié polarisant, et film étiré équipé d'un film protecteur WO2016042964A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201580049968.6A CN106687834B (zh) 2014-09-18 2015-08-19 偏振性层叠膜的制造方法及带保护膜的拉伸膜
KR1020177008845A KR102417465B1 (ko) 2014-09-18 2015-08-19 편광성 적층 필름의 제조 방법 및 프로텍트 필름 부착 연신 필름

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014190057A JP6543447B2 (ja) 2014-09-18 2014-09-18 偏光性積層フィルムの製造方法およびプロテクトフィルム付延伸フィルム
JP2014-190057 2014-09-18

Publications (1)

Publication Number Publication Date
WO2016042964A1 true WO2016042964A1 (fr) 2016-03-24

Family

ID=55533006

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/073186 WO2016042964A1 (fr) 2014-09-18 2015-08-19 Procédé de fabrication d'un film stratifié polarisant, et film étiré équipé d'un film protecteur

Country Status (5)

Country Link
JP (1) JP6543447B2 (fr)
KR (1) KR102417465B1 (fr)
CN (1) CN106687834B (fr)
TW (1) TW201615383A (fr)
WO (1) WO2016042964A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI704383B (zh) * 2016-03-30 2020-09-11 日商住友化學股份有限公司 延伸膜的製造方法及延伸膜的製造裝置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6360943B2 (ja) * 2016-05-20 2018-07-18 住友化学株式会社 積層フィルムの製造方法および偏光板の製造方法
JP7203486B2 (ja) * 2017-03-03 2023-01-13 住友化学株式会社 光学フィルム原反ロールの製造方法、および光学部材シートの製造方法
JP2019137555A (ja) * 2018-02-14 2019-08-22 住友化学株式会社 フィルムロール
JP2020001382A (ja) * 2018-06-22 2020-01-09 住友化学株式会社 樹脂フィルムロールの製造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002196132A (ja) * 2000-12-25 2002-07-10 Sumitomo Chem Co Ltd 偏光板の製造方法
WO2006077920A1 (fr) * 2005-01-20 2006-07-27 Nitto Denko Corporation Procédé de fabrication de plaque de polarisation, plaque de polarisation, film optique et affichage d’image les employant
JP2006243558A (ja) * 2005-03-04 2006-09-14 Nitto Denko Corp 偏光板の製造方法、偏光板およびそれを用いた画像表示装置
JP2012173724A (ja) * 2011-02-24 2012-09-10 Sumitomo Chemical Co Ltd 偏光フィルムの製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5244848B2 (ja) 2009-05-01 2013-07-24 日東電工株式会社 偏光子の製造方法
JP4691205B1 (ja) 2010-09-03 2011-06-01 日東電工株式会社 薄型高機能偏光膜を含む光学フィルム積層体の製造方法
KR101740763B1 (ko) * 2010-11-10 2017-05-26 스미또모 가가꾸 가부시키가이샤 편광성 적층 필름 및 편광판의 제조 방법
JP2012123229A (ja) * 2010-12-09 2012-06-28 Sumitomo Chemical Co Ltd 偏光性積層フィルムおよび偏光板の製造方法
JP2012194475A (ja) * 2011-03-17 2012-10-11 Sumitomo Chemical Co Ltd 偏光板、偏光板の製造方法および液晶表示装置
WO2013114583A1 (fr) * 2012-02-01 2013-08-08 住友化学株式会社 Procédé de fabrication pour une pellicule stratifiée polarisante et procédé de fabrication pour une plaque polarisante
KR101382928B1 (ko) 2012-04-09 2014-04-08 삼성전자주식회사 전자 서적의 책갈피 설정 방법 및 장치와 그 방법에 대한 프로그램 소스를 저장한 기록 매체

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002196132A (ja) * 2000-12-25 2002-07-10 Sumitomo Chem Co Ltd 偏光板の製造方法
WO2006077920A1 (fr) * 2005-01-20 2006-07-27 Nitto Denko Corporation Procédé de fabrication de plaque de polarisation, plaque de polarisation, film optique et affichage d’image les employant
JP2006243558A (ja) * 2005-03-04 2006-09-14 Nitto Denko Corp 偏光板の製造方法、偏光板およびそれを用いた画像表示装置
JP2012173724A (ja) * 2011-02-24 2012-09-10 Sumitomo Chemical Co Ltd 偏光フィルムの製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI704383B (zh) * 2016-03-30 2020-09-11 日商住友化學股份有限公司 延伸膜的製造方法及延伸膜的製造裝置

Also Published As

Publication number Publication date
CN106687834A (zh) 2017-05-17
TW201615383A (zh) 2016-05-01
CN106687834B (zh) 2019-09-24
JP6543447B2 (ja) 2019-07-10
KR20170056578A (ko) 2017-05-23
JP2016061959A (ja) 2016-04-25
KR102417465B1 (ko) 2022-07-06

Similar Documents

Publication Publication Date Title
JP6339621B2 (ja) 偏光性積層フィルムおよび偏光板の製造方法
KR101426633B1 (ko) 적층 필름의 제조 방법, 편광성 적층 필름의 제조 방법 및 편광판의 제조 방법
JP6133792B2 (ja) 偏光性積層フィルムおよびその製造方法
JP4901978B2 (ja) 延伸フィルム、偏光性延伸フィルムおよび偏光板の製造方法
JP4950357B1 (ja) 偏光性積層フィルムおよび偏光板の製造方法
JP6154099B2 (ja) 偏光性積層フィルムの製造方法及び偏光板の製造方法
JP6120779B2 (ja) 偏光性積層フィルムの製造方法及び偏光板の製造方法
JP5124704B1 (ja) 偏光板の製造方法
WO2016042964A1 (fr) Procédé de fabrication d'un film stratifié polarisant, et film étiré équipé d'un film protecteur
WO2013018844A1 (fr) Procédé de fabrication de plaque polarisante
JP2013156623A (ja) 偏光板の製造方法
JP2012032834A (ja) 延伸フィルム、偏光性延伸フィルムおよびそれらの製造方法
WO2013018845A1 (fr) Procédé de fabrication de plaque polarisante
JP6174298B2 (ja) 偏光性積層フィルムおよび積層フィルム
JP5514700B2 (ja) 偏光板の製造方法
JP2016170438A (ja) 偏光性積層フィルムおよび積層フィルム

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15842810

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20177008845

Country of ref document: KR

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 15842810

Country of ref document: EP

Kind code of ref document: A1