CN101498806A - Method of manufacturing polarizing plate - Google Patents

Method of manufacturing polarizing plate Download PDF

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Publication number
CN101498806A
CN101498806A CNA2008101910916A CN200810191091A CN101498806A CN 101498806 A CN101498806 A CN 101498806A CN A2008101910916 A CNA2008101910916 A CN A2008101910916A CN 200810191091 A CN200810191091 A CN 200810191091A CN 101498806 A CN101498806 A CN 101498806A
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CN
China
Prior art keywords
polarization plates
polaroid
protective film
tackifier
duplexer
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Pending
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CNA2008101910916A
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Chinese (zh)
Inventor
野间弘道
竹内智康
松本力也
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Fuji Mechanical industry Co., Ltd.
Sumitomo Chemical Co Ltd
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Sumitomo Chemical Co Ltd
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Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to CN201610576416.7A priority Critical patent/CN106199810B/en
Publication of CN101498806A publication Critical patent/CN101498806A/en
Pending legal-status Critical Current

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    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • 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
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
    • B32B37/0015—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality to avoid warp or curl
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
    • C08L29/02—Homopolymers or copolymers of unsaturated alcohols
    • C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • 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
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Quality & Reliability (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

The invention relates to a method for manufacturing a polarizing plate prepared by stacking and adhering protective films (31, 32) respectively on both surfaces of a polarizer (35), comprising: overlapping the polarizer (35) and the protective films (31, 32) via adhesives to obtain a laminate (37); then adhering the laminate (37) onto a convex curved surface formed in an arcuate shape along the conveyance direction of the laminate (37), preferably on the outer surface of a roller (38) and, at the same time, irradiating an adhesive with active energy rays from active energy ray irradiation devices (39, 40) to polymerize and harden the adhesive.

Description

The manufacture method of polarization plates
Technical field
The present invention relates to have the method for making of the polarization plates of practicality as one of optics that constitutes liquid crystal indicator.
Background technology
Polarization plates has practicality as one of optics that constitutes liquid crystal indicator.Fig. 4 represents that with a kind of of polarization plates be the structure that the linear polarization pellicular cascade forms in liquid crystal cells.On the light source side surface of the liquid crystal cells 10 that constitutes display panels, utilize adhesive layer 11 to fit and stacked straight line polarization film 12, constitute display panels.
Polarization plates is two-sided stacked under the state of protective film at polaroid usually, is assembled in the liquid crystal indicator and uses.That is, as shown in Figure 5, in common Polarizer 20, two-sided at polaroid 21 via adhesive layer 24,25 stacked bonding protective films 22,23 (spy opens the JP2004-245925 communique, and the spy opens the JP2005-173216 communique).
But, there is following situation as the polarization plates of above-mentioned making, that is, the integral body that a side that fits in liquid crystal cells is curled into depression (below, be called " contrary curling "), polarization plates forms ripple (below be called " wave curls ").Contrary curling and wave like this curls, and when polarization plates conforms to liquid crystal cells, easily at the residual bubble of binding face, forms the reason that liquid crystal panel produces waste product.Therefore, it is contrary curling curling with wave to expect that polarization plates does not produce, and also is to curl into projection (hereinafter referred to as " just curling ") in a side that conforms to liquid crystal cells even do not produce curling or produce curling.
Summary of the invention
The object of the present invention is to provide and suppress against method for making and producing device curling and the curling polarization plates that produces of wave.
The inventor has carried out repeatedly attentively research in order to reach above-mentioned purpose; found that by following duplexer is being carried out under the crooked state according to the mode of just curling; make the tackifier polymerizing curable; can suppress contrary curls and the curling generation of wave; from having finished the present invention, described duplexer is to be shaped via the stacked protective film of tackifier by the single or double that makes polaroid.
Promptly; a kind of method for making of polarization plates of the present invention; described polarization plates is for stacked respectively at the single or double of polaroid and be bonded with the polarization plates of protective film; wherein; described polaroid and protective film are obtained duplexer via the tackifier coincidence; then, the length direction (direction of transfer) that described duplexer is adhered to along this duplexer forms circular-arc convex surface, makes described tackifier polymerizing curable simultaneously.Above-mentioned convex surface for example, can use the outer peripheral face of roller.
As above-mentioned polaroid; can enumerate the polyvinyl alcohol film that is adsorbed and is orientated by the iodine of unidirectional stretching or dichroic dye; as above-mentioned protective film one side; can enumerate amorphism polyolefin-based resins film; the opposing party as above-mentioned protective film; can enumerate tri acetyl cellulose membrane, but be not limited to this.
Preferably the duplexer irradiation active energy ray that you are adhered to above-mentioned convex surface makes it polymerizing curable, also can heat to make it polymerizing curable.
In addition, polarization plates producing device of the present invention has the mechanism at the double spread tackifier of the single face of protective film or polaroid; Make protective film coincide with the two-sided mechanism of polaroid via adhesive layer; With the mechanism that is used to make the tackifier polymerizing curable; wherein; be used to the mechanism of described tackifier polymerizing curable is comprised: make the polaroid that overlaps behind the protective film adhere to outer peripheral face and the roller that transmits simultaneously and to the active-energy beam irradiating apparatus of the outer peripheral face irradiation active energy ray of this roller.
According to the present invention; by making polaroid and protective film are formed circular-arc convex surface via the duplexer that the tackifier coincidence forms along the length direction that adheres to this duplexer (direction of transfer); shine active energy ray simultaneously and make described tackifier polymerizing curable; thus; when polarization plates is adhered to liquid crystal cells; can suppress contrary and curl and the curling generation of wave, be to cause the reason that makes liquid crystal panel generation deterioration at the residual bubble of bonding plane against the generation of curling and wave is curling.
Description of drawings
Fig. 1 is the diagrammatic side views of an embodiment of the producing device of expression polarization plates of the present invention.
Fig. 2 (A) is the explanation sketch that is illustrated in the evaluation method that the wave that generates on the Polarizer curls (B).
Fig. 3 is that expression utilizes in the comparative example 1,2 irradiation of active energy ray to carry out the key diagram of method of the polymerizing curable of tackifier.
Fig. 4 is that explanation will be as a kind of key diagram that is the linear polarization pellicular cascade in the structure of liquid crystal cells of polarization plates.
Fig. 5 is the key diagram of the structure of example polarization plates.
Symbol description
30: the producing device of polarization plates
31,32: protective film
33,34: the tackifier apparatus for coating
35: polaroid
36: niproll
37: duplexer
38: roller
39,40,41: the active-energy beam irradiating apparatus
42: transmit and use niproll
50: polarization plates
51: wavelength
52: amplitude
60: duplexer
61: ultraviolet lamp
Embodiment
Below, one embodiment of the present invention is described.Polarization plates in this embodiment is two-sidedly to form via the stacked protective film of tackifier by polaroid and at it.As above-mentioned polaroid, can use (for example above-mentioned spy opens the polaroid of putting down in writing in the 2004-245925 communique) polaroid that uses during polarization plates is made all the time, can enumerate usually and utilize iodine or dichroic dye to implement dyeing, then carry out boric acid and handle and the film of formation the polyvinyl alcohol (PVA) after the unilateral stretching.The thickness of polaroid is preferably the scope of 5～50 μ m.
At the two-sided stacked protective film of above-mentioned polaroid, can be that identical type also can be a variety classes.When using different types of protective film, a side of protective film uses the low resin films of moisture permeability such as amorphism polyolefin resin film, polyester resin film, acryl resin film, polycarbonate resin film, polysulfone resin film, ester ring type polyimide resin film.The amorphism polyolefin resin film, " TOPAS " of German Ticona corporate system, " ARTON " of JSR (Co., Ltd.) corporate system are for example arranged, " the ア ペ Le (APPEL) " of " the ゼ オ ノ ア (ZEONOR) " of Japanese ZEON (Co., Ltd.) corporate system and " ゼ オ ネ Star Network ス (ZEONEX) ", Mitsui Chemicals (Co., Ltd.) corporate system etc.The opposing party of protective film for example uses except that above-mentioned film, and acetylcellulose ester such as triacetylcellulose film and biacetyl cellophane is a film.Triacetylcellulose film for example has " FUJITAC TD80 ", " FUJITAC TD80UF " and " FUJITAC TD80UZ ", Lazer's (UNIKA Co., Ltd.) corporate system " KC8UX2M " of Fujiphoto (Co., Ltd.) corporate system and " KC8UY " etc.
Protective film is before polaroid is fitted, and can implement that basification, Corona discharge Treatment, silane coupling agent are handled, anchor is coated with easy bonding processing such as processing to binding face.In addition, the surface at the opposition side of the face of fitting with polaroid of protective film also can have various processing layers such as hard conating, anti-reflection layer, antiglare layer.The thickness of protective film, the normally scope of 5～200 μ m degree, preferably 10～120 μ m, more preferably 10～85 μ m.
For tackifier, viewpoint from against weather or refractive index, cationically polymerizable etc., for example, as the spy open put down in writing in the JP2004-245925 communique, can in tackifier, use the epoxy resin that does not contain aromatic rings in the molecule, but be not limited to this, can adopt the various tackifier that all the time in the making of polarization plates, use.As above-mentioned epoxy resin, use for example hydrogenated epoxy resin, cycloaliphatic epoxy resin, aliphatic epoxy resin etc.Can in the epoxy resin composition, add polymerization initiator, for example be used for active energy ray irradiation and the light cationic polymerization initiators of polymerization, the hot cationic polymerization initiators that is used for the polymerization by heating and other adjuvant (activator etc.) modulation coating stick with glue the agent composition.
Following with reference to description of drawings polarization plates producing device of the present invention and method for making.Fig. 1 is the sketch of an embodiment of the producing device of expression polarization plates of the present invention.
In polarization plates producing device 30 shown in Figure 1, be sequentially with: be used for tackifier apparatus for coating 33,34 at the single face coating binder of protective film 31,32 along direction of transfer; Be used to overlap the niproll 36 of protective film 31,32, polaroid 35; Be used to make the roller 38 of duplexer 37 adhesions that are fitted with above-mentioned protective film 31,32 and polaroid 35; The 1st active-energy beam irradiating apparatus 39,40 that on the position relative, is provided with the outer peripheral face of this roller 38; More leaning on the 2nd active-energy beam irradiating apparatus 41 of above-mentioned direction of transfer downstream side setting than it; Transmit with niproll 42.
That is, from being the protective film 31,32 that state that the roller shape reels is extracted out continuously, by tackifier apparatus for coating 33,34 at its single face coating binder.With above-mentioned protective film 31,32 in the same manner, the polaroid 35 extracted out continuously two-sided respectively via tackifier and utilize niproll 36 that protective film 31,32 is overlapped, thereby form duplexer 37.In the process that the outer peripheral face that this duplexer 37 is sticked to roller 38 transmits simultaneously, from the outer peripheral face irradiation active energy ray of the 1st active-energy beam irradiating apparatus 39,40 to roller 38, polymerizing curable tackifier.And the 2nd active-energy beam irradiating apparatus 41 that disposes at the direction of transfer downstream side is the devices that are used to make the complete polymerizing curable of tackifier, and, can omit as required.
Method to protective film 31,32 coating binders; be not particularly limited, for example can adopt scraper, wire bar (wire bar), roller to lick various coating processes such as formula coating (die coater), section's horse coating machine (comma coater), intaglio coating.Wherein, in the film coated, consider degree of freedom for acceptance line (pass line), corresponding etc. with width, tackifier apparatus for coating 33,34 is preferably gravure roll.
When adopting gravure roll to carry out the tackifier coating as tackifier apparatus for coating 33,34, the thickness of adhesive layer is recently adjusted with respect to stretching than promptly of linear velocity according to the speed of gravure roll.The linear velocity of protective film 31,32 is set at 15～50m/ branch; make the counter-rotation of gravure roll to the direction of transfer of this protective film 31,32; with the speed setting of gravure roll is 5～500m/ branch (draw ratio 1～10), and the coating thickness with adhesive layer is adjusted into about 1～10 μ m thus.
The outer peripheral face of roller 38 constitutes the convex surface that minute surface finishing forms, and on this surface duplexer 37 is adhered to and transmits simultaneously, utilizes active-energy beam irradiating apparatus 39,40 to make the tackifier polymerizing curable in this process.When making the tackifier polymerizing curable, as long as duplexer 37 is adhered to fully, the diameter of roller 38 is not particularly limited, but the duplexer 37 that adhesive linkage is in its uncured state preferably during by roller 38 with 30mJ/cm 2Ultraviolet ray accumulation light quantity irradiation active energy ray.Roller 38 can be driven in the line motion of duplexer 37 or be driven in rotation, and perhaps also can be fixed and duplexer 37 is slided on its surface.In addition, increase heat in order to be not easy to duplexer 37 when polymerizing curable is carried out in the irradiation that utilizes active energy ray, roller 38 can be used as chill roll and works.The surface temperature of the chill roll of this moment is preferably 20～25 ℃.
When utilizing the irradiation of active energy ray to carry out polymerizing curable, the light source that adopts is not particularly limited, can adopt and have wavelength 400nm following luminescence distribution, for example, Cooper-Hewitt lamp, middle medium pressure mercury lamp, high-pressure mercury-vapor lamp, extra-high-pressure mercury vapour lamp, chemical lamp, UV-lamp, microwave excitation mercury vapor lamp, metal halide lamp etc.To the rayed intensity of composition epoxy resin, depend on each purpose composition, be not particularly limited, but the exposure intensity of the effective wavelength region may of activation of initiating agent is preferably 0.1～100mJ/cm 2If rayed undercapacity 0.1mJ/cm to resin combination 2, then the reaction time long, if surpass 100mJ/cm 2, then because the heating during from the heat of lamp radiation and composition polymerization may produce the flavescence of composition epoxy resin and the deterioration of polaroid.
Time to composition irradiation active energy ray is controlled by the composition of each polymerization, is not particularly limited, and be 10～5000mJ/cm but be preferably set to the accumulation light quantity of representing with the form of exposure intensity and irradiation time product 2For example, if to the accumulation deficiency in light quantity 10mJ/cm of above-mentioned composition epoxy resin 2, then insufficient from the generation of the activated material of initiating agent, the curing of resulting protective film may be insufficient, if should accumulation light quantity surpass 5000mJ/cm on the other hand 2, then irradiation time is very long, and productivity is unfavorable for improving.
When adopting ultraviolet ray as active energy ray, the linear velocity of duplexer 37 is not particularly limited, and preferably goes up with the tension force of 100～800N, 30mJ/cm at least at length direction (direction of transfer) 2Under above exposure intensity, the condition of the irradiation time more than 0.3 second, to duplexer 37 irradiation active energy rays.In addition, when the accumulation light quantity of being carried out active energy ray irradiation by active-energy line apparatus 39,40 is insufficient, the 2nd auxiliary active-energy line apparatus 41 can be set, boost active energy ray and finish the polymerization of the tackifier of duplexer 37.
The polarization plates that obtains thus, in contrast to the existing situation (referring to Fig. 3) that below the active-energy line apparatus, transmits polarization plates and pass through with the tension level ground of stipulating, having suppressed contrary curls and the curling generation of wave, therefore when affixing to liquid crystal cells, not residual bubble on the bonding plane, thus the bad generation of liquid crystal panel can be reduced.
Below, provide embodiment and specify the present invention, but the invention is not restricted to following embodiment.
Embodiment 1
Preparing thickness is the amorphism polyolefin resin film [ZEONOR] (Japanese Zeon corporate system) of 75 μ m and the triacetylcellulose film [KC8U2MW] that thickness is 80 μ m (Japanese コ ニ カ ミ ノ Le corporate system).Single face separately at amorphism polyolefin resin film and triacetylcellulose film, utilization is as the microchamber coating machine (Mechanology Inc. of Fuji system) of tackifier apparatus for coating, and coating is as the composition epoxy resin [KRX492-30] (ADEKA corporate system) of tackifier.By the linear velocity with duplexer be set at the 11m/ branch, make gravure roll to moving with the counter rotation of the direction of transfer of stacking material, be the 22m/ branch with the speed setting of gravure roll, thereby make the thickness of adhesive layer be about 2 μ m.
Secondly, be the two-sided of the iodine of the 25 μ m polyvinyl alcohol film that is adsorbed and is orientated at thickness, via above-mentioned composition epoxy resin and utilize niproll that above-mentioned amorphism polyolefin resin film and above-mentioned triacetylcellulose film are overlapped.
Make above-mentioned polarization plates alongst under the tension force of 600N, with the triacetylcellulose film of above-mentioned polarization plates when stacked face adheres to 23 ℃ the outer peripheral face of chill roll, dividing by the uviol lamp that is had by ultraviolet lamp (GS-YUASA corporate system) with linear velocity 11m/ is in EHAN1700NAL high-pressure mercury-vapor lamp 2 ultraviolet ray of shining.The ultraviolet ray accumulation light quantity of this moment is 110 (mJ/cm 2).Ultraviolet accumulation light quantity is based on that the irradiation in the UVB zone of wavelength region may 280～320nm measures.Afterwards, be that the duplexer of 1330mm cuts off with 600mm along its length with Width, it is estimated the degree that wave curls with following method.
That is, as shown in Figure 2, measure wave number, wavelength, the amplitude of the prone Polarizer 50 that triacetylcellulose film fits respectively.Wave number is the quantity at the Width crest side by side of polarization plates 50, and shown in Fig. 2 (B), wavelength 51 is distances of measuring between the peak maximum of crest of polarization plates 50.In addition, shown in figure (A), amplitude 52 is the length that is determined between the summit of each position crest of a～e of polarization plates 50 broad ways 5 five equilibriums and trough, is half of this length value.Above-mentioned measurement result is shown in Fig. 1.
Embodiment 2
Except ultraviolet accumulation light quantity is 143 (mJ/cm 2) outside, obtain polarization plates in the same manner with embodiment 1.The results are shown in table 1.
Comparative example 1
Make the two-sided duplexer 60 that forms via stacked amorphism polyolefin resin film of composition epoxy resin [KRX492-32] (ADEKA corporate system) and triacetylcellulose film as tackifier at polyvinyl alcohol film, as shown in Figure 3, under the tension force of 600N, under the situation that does not adhere to roller, be that 11m/ divides by (FUSION: Off ユ-ジ ヨ Application corporate system) uviol lamp that is had is in the ultraviolet ray of LH10-60UV electrodeless lamp 1 irradiation, makes it polymerizing curable by ultraviolet lamp 61 in the horizontal direction with the linear velocity.This moment, ultraviolet accumulation light quantity was 119 (mJ/cm 2).In addition, with the embodiment 1 identical polarization plates that obtains.The results are shown in Fig. 1.
Comparative example 2
Except ultraviolet accumulation light quantity is 27 (mJ/cm 2) outside, with the comparative example 1 identical polarization plates that obtains.The results are shown in table 1.
Table 1
Figure A200810191091D00091
As shown in table 1, any one of the polarization plates of comparative example 1 and comparative example 2 all produces wave and curls, and compares with comparative example 2, and the polarization plates of the comparative example 1 that ultraviolet accumulation light quantity is many produces stronger wave and curls.With respect to this, the wave number of the polarization plates that is obtained by embodiment 1 and embodiment 2 is 0, has suppressed contrary and has curled and generation that wave curls.And, in embodiment 1 and embodiment 2, the film that obtains is cut into the rectangle of 20cm * 30cm, be arranged on the flat board, confirm four jiaos bending status (curling), the result does not see curling fully.

Claims (6)

1, a kind of method for making of polarization plates, it is for stacked respectively at the single or double of polaroid and be bonded with the method for making of the polarization plates of protective film, wherein,
Described polaroid and protective film are overlapped and obtain duplexer via tackifier, follow, described duplexer is adhered to along the length direction of this duplexer form circular-arc convex surface, make described tackifier polymerizing curable simultaneously.
2, the method for making of polarization plates as claimed in claim 1, wherein,
Described convex surface is the outer peripheral face of roller.
3, the method for making of polarization plates as claimed in claim 1 or 2, wherein,
The polyvinyl alcohol film of described polaroid for being adsorbed and being orientated by unidirectional stretching and iodine or dichroic dye, a side of described protective film is the amorphism polyolefin resin film, the opposing party is a triacetylcellulose film.
4, the method for making of polarization plates as claimed in claim 1, wherein,
To adhering to the duplexer irradiation active energy ray of described convex surface, make it polymerizing curable.
5, a kind of producing device of polarization plates, it has:
Mechanism at the double spread tackifier of the single face of protective film or polaroid;
Make protective film coincide with the mechanism of the single or double of polaroid via adhesive layer; With
Be used to make the mechanism of tackifier polymerizing curable, wherein,
Be used to the mechanism of described tackifier polymerizing curable is comprised: make the polaroid that has overlapped protective film adhere to outer peripheral face and simultaneously with the roller of its transmission with to the active-energy beam irradiating apparatus of the outer peripheral face irradiation active energy ray of this roller.
6, the producing device of polarization plates as claimed in claim 5, wherein, described active-energy beam irradiating apparatus is a ultraviolet lamp.
CNA2008101910916A 2007-11-30 2008-11-24 Method of manufacturing polarizing plate Pending CN101498806A (en)

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Cited By (17)

* Cited by examiner, † Cited by third party
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CN102466835A (en) * 2010-10-29 2012-05-23 住友化学株式会社 Method for producing polarizing plate
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