CN106199810A - The manufacture method of polarization plates - Google Patents

The manufacture method of polarization plates Download PDF

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Publication number
CN106199810A
CN106199810A CN201610576416.7A CN201610576416A CN106199810A CN 106199810 A CN106199810 A CN 106199810A CN 201610576416 A CN201610576416 A CN 201610576416A CN 106199810 A CN106199810 A CN 106199810A
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CN
China
Prior art keywords
polarization plates
adhesive
manufacture method
polaroid
duplexer
Prior art date
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Granted
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CN201610576416.7A
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Chinese (zh)
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CN106199810B (en
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
Fuji Kikai Kogyo Co Ltd
Original Assignee
FUJI MECHANICAL INDUSTRY Co Ltd
Sumitomo Chemical Co Ltd
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Publication of CN106199810A publication Critical patent/CN106199810A/en
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Classifications

    • 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

Abstract

The present invention relates to one in the two-sided stacking respectively of polaroid (35) the manufacture method of the polarization plates being bonded with protective film (31,32); polaroid (35) and protective film (31,32) are overlapped via adhesive and obtain duplexer (37); then; above-mentioned duplexer (37) is made to adhere to the convex surface being formed as arc-shaped along the direction of transfer of this duplexer (37); it is preferably the outer surface of roller (38); irradiate the active energy ray from active-energy beam irradiating apparatus (39,40) simultaneously, make adhesive polymerizing curable.

Description

The manufacture method of polarization plates
The application is the Application No. 200810191091.6, invention entitled that applicant submitted on November 24th, 2008 The divisional application of the application of " manufacture method of polarization plates ".
Technical field
The present invention relates to, as one of optics constituting liquid crystal indicator, there is the system of the polarization plates of practicality Make method.
Background technology
Polarization plates has practicality as one of optics constituting liquid crystal indicator.Fig. 4 represents polarization plates A kind of i.e. linear polarization thin layer be laminated on the structure of liquid crystal cells.Light at the liquid crystal cells 10 constituting display panels Source surface, utilizes adhesive layer 11 laminating stacking linear polarization thin film 12, constitutes display panels.
Polarization plates generally when the two-sided stacking protective film of polaroid, is assembled in liquid crystal indicator Use.That is, as it is shown in figure 5, in common Polarizer 20, two-sided at polaroid 21 is glued via adhesive layer 24,25 stacking Connect protective film 22,23 (JP JP2004-245925 publication, JP JP2005-173216 publication).
But, as the polarization plates of above-mentioned making exists following situation, i.e. the side fitting in liquid crystal cells is curled into recessed Fall into (hereinafter referred to as " inverse curling "), polarization plates ripple (hereinafter referred to as " wave curling ") is integrally formed.Such inverse curling Crimp with wave, when polarization plates conforms to liquid crystal cells, easily remain bubble at binding face, form liquid crystal panel and produce waste product Reason.Therefore, it is desirable to polarization plates does not produce inverse curling and wave crimps, though do not produce curling or produce curling be also The side conforming to liquid crystal cells curls into projection (hereinafter referred to as " just crimping ").
Summary of the invention
It is an object of the invention to provide manufacture method and the making of the polarization plates that the inverse curling of suppression produces with wave curling Device.
The present inventor has carried out to reach above-mentioned purpose the most attentively studying, found that by by following stacking Under the state that body is curved according to the mode just crimped, make adhesive polymerizing curable, inverse curling and wave curling can be suppressed Producing, from completing the present invention, described duplexer is by making the single or double of polaroid thin via adhesive stacked guard Film and shape.
That is, the manufacture method of the polarization plates of a kind of present invention, described polarization plates be polaroid single or double respectively Stacking is also bonded with the polarization plates of protective film, wherein, described polaroid and protective film is overlapped via adhesive and is obtained Duplexer, then, the length direction (direction of transfer) making described duplexer adhere to along this duplexer is formed as arc-shaped Convex surface, makes described adhesive polymerizing curable simultaneously.Above-mentioned convex surface, such as, can use the outer peripheral face of roller.
As above-mentioned polaroid, the iodine being one-way stretched can be enumerated or polyethylene that dichroic dye is adsorbed and is orientated Alcohol film, as above-mentioned protective film one side, can enumerate amorphism polyolefin-based resins film, another as above-mentioned protective film One side, can enumerate tri acetyl cellulose membrane, but be not limited to this.
The duplexer irradiation active energy ray that you preferably adhere to above-mentioned convex surface is allowed to polymerizing curable, it is also possible to heating It is allowed to polymerizing curable.
It addition, the polarization plates producing device of the present invention has at the one side of protective film or the double spread of polaroid gluing The mechanism of agent；Protective film is made to coincide with the mechanism that polaroid is two-sided via adhesive layer；Be used for making adhesive polymerizing curable Mechanism, wherein, for making the mechanism of described adhesive polymerizing curable comprise: make the polaroid after coincidence protective film adhere to Outer peripheral face the roller simultaneously transmitted, and the active-energy beam irradiating apparatus of the outer peripheral face irradiation active energy ray to this roller.
According to the present invention, by making duplexer polaroid and protective film overlapped via adhesive along adhesion Length direction (direction of transfer) in this duplexer is formed as the convex surface of arc-shaped, irradiates active energy ray simultaneously and makes described glue Stick polymerizing curable, thus, when polarization plates is adhered to liquid crystal cells, can suppress inverse curling and the generation of wave curling, inverse The generation of curling and wave curling is to cause to make liquid crystal panel that the reason of deterioration to occur at bonding plane residual bubble.
Accompanying drawing explanation
Fig. 1 is the diagrammatic side views of an embodiment of the producing device of the polarization plates representing the present invention.
Fig. 2 (A) (B) is the explanation sketch of the evaluation methodology representing the wave curling generated on Polarizer.
Fig. 3 is to represent the method utilizing polymerizing curable that the irradiation of active energy ray carries out adhesive in comparative example 1,2 Explanatory diagram.
Fig. 4 is that a kind of explanatory diagram being linear polarization thin layer and being laminated on the structure of liquid crystal cells using as polarization plates is described.
Fig. 5 is the explanatory diagram of the structure of example polarization plates.
Symbol description
30: the producing device of polarization plates
31,32: protective film
33,34: adhesive apparatus for coating
35: polaroid
36: niproll
37: duplexer
38: roller
39,40,41: active-energy beam irradiating apparatus
42: transmission niproll
50: polarization plates
51: wavelength
52: amplitude
60: duplexer
61: ultraviolet lamp
Detailed description of the invention
Hereinafter, one embodiment of the present invention is described.Polarization plates in this embodiment, is by polaroid and two-sided at it Formed via the protective film of adhesive stacking.As above-mentioned polaroid, use during polarization plates makes all the time can be used (polaroid described in the most above-mentioned JP 2004-245925 publication) polaroid, after can enumerating generally to simple tension Polyvinyl alcohol utilize iodine or dichroic dye to implement dyeing, then carry out boric acid process and the thin film that formed.Polaroid Thickness is preferably the scope of 5～50 μm.
At the protective film of the two-sided stacking of above-mentioned polaroid, can be identical type can also be variety classes.Use During different types of protective film, protective film one side use amorphism polyolefin resin film, polyester resin film, third The moisture permeabilitys such as olefin(e) acid resin film, polycarbonate resin film, polysulfone resin thin film, ester ring type polyimide resin film are low Resin film.Amorphism polyolefin resin film, such as, have " TOPAS " of German Ticona company, JSR (Co., Ltd.) " ARTON " of company, " ゼ オ ノ ア (ZEONOR) " and " the ゼ オ ネ ッ Network ス of ZEON (Co., Ltd.) company of Japan (ZEONEX) ", " ア ペ Le (APPEL) " of Mitsui Chemicals (Co., Ltd.) company etc..The opposing party of protective film is except above-mentioned The such as acetylcellulose such as triacetylcellulose film and diacetyl cellulose thin film ester system thin film is used beyond thin film.Triacetyl Cellulose membrane, such as have " the FUJITAC TD80 ", " FUJITAC TD80UF " of Fujiphoto (Co., Ltd.) company with And " FUJITAC TD80UZ ", Lazer (UNIKA Co., Ltd.) company's system " KC8UX2M " and " KC8UY " etc..
Binding face, before fitting to polaroid, can be implemented basification, Corona discharge Treatment, silane coupling agent by protective film The easy bonding process such as process, anchor painting process.It addition, the surface of the opposition side in the face with polaroid laminating of protective film, also Can have the various process layers such as hard conating, anti-reflection layer, antiglare layer.The thickness of protective film, it is common that 5～200 μm degree Scope, preferably 10～120 μm, more preferably 10～85 μm.
For adhesive, from the viewpoint of against weather or refractive index, cationically polymerizable etc., such as, such as spy As described in opening in JP2004-245925 publication, the intramolecular asphalt mixtures modified by epoxy resin without aromatic rings can be used in adhesive Fat, but it is not limited to this, the various adhesive all the time used in the making of polarization plates can be used.As above-mentioned asphalt mixtures modified by epoxy resin Fat, uses such as hydrogenated epoxy resin, cycloaliphatic epoxy resin, aliphatic epoxy resin etc..Can add in epoxy resin ingredient Polyaddition initiator, such as active energy ray irradiate and be polymerized light cationic polymerization initiators, for by heating The hot cationic polymerization initiators of polymerization and other additive (activator etc.) modulation are coated with adhesive compound.
Polarization plates producing device and the manufacture method of the present invention are described referring to the drawings.Fig. 1 is to represent that the present invention's is inclined The sketch of one embodiment of the producing device of vibration plate.
In the polarization plates producing device 30 shown in Fig. 1, it is sequentially with along direction of transfer: at protective film 31,32 The adhesive apparatus for coating 33,34 of single spreading adhesive；For the protective film 31 of overlapping, 32, the niproll of polaroid 35 36；For the roller 38 making the duplexer 37 being fitted with above-mentioned protective film 31,32 and polaroid 35 adhere to；Outside with this roller 38 The 1st active-energy beam irradiating apparatus 39,40 arranged on the position that side face is relative；Above-mentioned direction of transfer downstream is more being leaned on than it The 2nd active-energy beam irradiating apparatus 41 arranged；Transmit with niproll 42.
That is, the protective film 31,32 extracted out continuously from the state wound in roll, by adhesive apparatus for coating 33,34 At its single spreading adhesive.Two-sided difference at polaroid 35 identical with above-mentioned protective film 31,32, that extracted out continuously Via adhesive and utilize niproll 36 to be overlapped by protective film 31,32, thus cambium layer stack 37.This duplexer 37 is being glued It is attached to during the outer peripheral face of roller 38 transmits simultaneously, shine from the 1st active-energy beam irradiating apparatus 39,40 to the outer peripheral face of roller 38 Penetrate active energy ray, polymerizing curable adhesive.And, at the 2nd active-energy beam irradiating apparatus of direction of transfer downstream configuration 41 is the device for making the complete polymerizing curable of adhesive, further, it is possible to omit as desired.
To the method for protective film 31,32 coating binder, it is not particularly limited, such as, can use scraper, wire bar It is various that (wire bar), roller lick formula coating (die coater), section's horse coating machine (comma coater), intaglio coating etc. Coating process.Wherein, in film coated, it is contemplated that corresponding with width etc. for the degree of freedom of acceptance line (pass line), Adhesive apparatus for coating 33,34 is preferably gravure roll.
When using gravure roll to carry out adhesive coating as adhesive apparatus for coating 33,34, the thickness root of adhesive layer Adjust relative to the ratio i.e. draw ratio of linear velocity according to the speed of gravure roll.The linear velocity of protective film 31,32 is set as 15 ～50m/ divides, make gravure roll rotate to the opposite direction of the direction of transfer of this protective film 31,32, the speed of gravure roll is set as 5～500m/ divide (draw ratio 1～10), are thus adjusted by the coating thickness of adhesive layer and are about 1～10 μm.
The outer peripheral face of roller 38 is configured to the convex surface of minute surface polish, is adhered to by duplexer 37 on a surface and same Time transmit, should during utilize active-energy beam irradiating apparatus 39,40 to make adhesive polymerizing curable.Make adhesive polymerizing curable Time, as long as making duplexer 37 adhere to fully, the diameter of roller 38 is not particularly limited, but adhesive linkage is in uncured shape The duplexer 37 of state preferably in the period by roller 38 with 30mJ/cm2Ultraviolet accumulated light irradiate active energy ray.Roller 38 The line motion of duplexer 37 can be driven in or be driven in rotation, or can also be fixed and make duplexer 37 sliding on its surface Dynamic.It addition, when the irradiation utilizing active energy ray carries out polymerizing curable in order to be not easy to increase heat, roller 38 to duplexer 37 Can work as chill roll.The surface temperature of chill roll now is preferably 20～25 DEG C.
When the irradiation utilizing active energy ray carries out polymerizing curable, the light source of employing is not particularly limited, and can use and have Below wavelength 400nm sends out photodistributed, such as, and low pressure mercury lamp, middle medium pressure mercury lamp, high-pressure mercury-vapor lamp, extra-high-pressure mercury vapour lamp, change Learn lamp, Burdick lamp, microwave excitation finsen lamp, metal halide lamp etc..To the photo-irradiation intensity of composition epoxy resin, depend on Each purpose compositions, is not particularly limited, but the exposure rate that initiator activates effective wavelength region is preferably 0.1 ～100mJ/cm2.If to the photo-irradiation intensity of resin combination less than 0.1mJ/cm2, then the response time is long, if it exceeds 100mJ/cm2, then due to the heating when heat radiated from lamp and compositions are polymerized, it is possible to create composition epoxy resin Turn yellow and the deterioration of polaroid.
The time irradiating active energy ray to compositions is controlled by the compositions of each polymerization, is not particularly limited, but excellent Choosing is set as that the accumulated light represented with the form of exposure rate and irradiation time product is 10～5000mJ/cm2.Such as, as Fruit to the accumulated light of above-mentioned composition epoxy resin less than 10mJ/cm2, then the generation from the activated material of initiator is not filled Point, the solidification of obtained protective film may be insufficient, if on the other hand this accumulated light is more than 5000mJ/cm2, then according to Time of penetrating is the longest, unfavorable for improving productivity.
When using ultraviolet as active energy ray, the linear velocity of duplexer 37 is not particularly limited, and is preferably growing With the tension force of 100～800N, at least 30mJ/cm on degree direction (direction of transfer)2Above exposure rate, the photograph of more than 0.3 second Under conditions of penetrating the time, irradiate active energy ray to duplexer 37.It addition, when being carried out activity by active-energy line apparatus 39,40 When the accumulated light of energy line irradiation is insufficient, the 2nd active-energy line apparatus 41 of auxiliary, boost activity energy can be set Amount line and the polymerization of adhesive of complete layer stack 37.
Thus obtained polarization plates, in contrast to existing in the lower section of active-energy line apparatus with regulation tension water level land Transmit polarization plates the situation (seeing Fig. 3) passed through, it is suppressed that inverse curling and the generation of wave curling, therefore when affixing to liquid crystal During unit, bonding plane does not remain bubble such that it is able to reduce the bad generation of liquid crystal panel.
Hereinafter, provide embodiment and illustrate the present invention, but the invention is not restricted to below example.
Embodiment 1
Prepare the amorphism polyolefin resin film [ZEONOR] (Nippon Zeon's system) that thickness is 75 μm, and thickness It it is the triacetylcellulose film [KC8U2MW] (Japan U ニ カ ミ ノ Le タ company system) of 80 μm.In amorphism polyolefin tree Membrane of lipoprotein and the respective one side of triacetylcellulose film, utilize the microchamber coating machine (Fuji as adhesive apparatus for coating Mechanology Inc.'s system), it is coated with the composition epoxy resin [KRX492-30] (ADEKA company system) as adhesive.By by stacking The linear velocity of body is set as that 11m/ divides, makes gravure roll rotate, by gravure roll to the reverse direction with the direction of transfer of stacking material Speed is set as that 22m/ divides, so that the thickness of adhesive layer is about 2 μm.
Secondly, the polyvinyl alcohol film being adsorbed at the iodine that thickness is 25 μm and being orientated two-sided, via above-mentioned epoxy Resin combination also utilizes niproll above-mentioned amorphism polyolefin resin film and above-mentioned triacetylcellulose film to be overlapped.
Make above-mentioned polarization plates alongst under the tension force of 600N, by thin for the triacetyl cellulose of above-mentioned polarization plates While the outer peripheral face of the chill roll that the face of film institute stacking adheres to 23 DEG C, divide by being irradiated dress by ultraviolet with linear velocity 11m/ Put in the ultraviolet of uviol lamp i.e. EHAN1700NAL high-pressure mercury-vapor lamp 2 irradiation that (GS-YUASA company system) is had.Now Ultraviolet accumulated light is 110 (mJ/cm2).The accumulated light of ultraviolet, is UVB district based on wavelength region 280～320nm The irradiation in territory measures.Afterwards, duplexer that width is 1330mm is cut off with 600mm along its length, to its with Following method is evaluated the degree of wave curling.
That is, as in figure 2 it is shown, measure respectively the wave number of the prone Polarizer 50 fitted of triacetylcellulose film, Wavelength, amplitude.Wave number is the quantity of the width crest side by side in polarization plates 50, and as shown in Fig. 2 (B), wavelength 51 is to survey Distance between the peak maximum of the crest of amount polarization plates 50.It addition, as shown in Fig. 2 (A), amplitude 52 is to measure by polarization plates 50 Length between each position crest of a～e of 5 deciles and the summit of trough, is the half of this length value in the width direction.On State measurement result and be shown in Fig. 1.
Embodiment 2
Except the accumulated light of ultraviolet is 143 (mJ/cm2) outward, obtain polarization plates same as in Example 1ly.Result is shown In table 1.
Comparative example 1
Make at polyvinyl alcohol film is two-sided via composition epoxy resin [the KRX492-32] (ADEKA as adhesive Company's system) stacking amorphism polyolefin resin film and the duplexer 60 of triacetylcellulose film, as it is shown on figure 3, Under the tension force of 600N, in the case of being not adhere to roller, divide by being shone by ultraviolet with linear velocity for 11m/ in the horizontal direction The ultraviolet that the uviol lamp i.e. LH10-60UV electrodeless lamp 1 that injection device 61 (FUSION: Off ュ-ジ ョ Application company system) is had irradiates In line, it is allowed to polymerizing curable.Now the accumulated light of ultraviolet is 119 (mJ/cm2).Obtain partially additionally, same as in Example 1 Vibration plate.Result is shown in Fig. 1.
Comparative example 2
Except the accumulated light of ultraviolet is 27 (mJ/cm2) outward, identical with comparative example 1 obtain polarization plates.Result is shown in table 1。
Table 1
As shown in table 1, any one of the polarization plates of comparative example 1 and comparative example 2 all produces wave curling, with comparative example 2 Comparing, the polarization plates of the comparative example 1 that the accumulated light of ultraviolet is many produces stronger wave curling.In contrast, by embodiment 1 The wave number of the polarization plates obtained with embodiment 2 is 0, it is suppressed that inverse curling and the generation of wave curling.And, embodiment 1 He In embodiment 2, the thin film obtained is cut into the rectangle of 20cm × 30cm, is arranged on flat board, confirm the bending status of corner (curling), result is entirely without seeing curling.

Claims (13)

1. the manufacture method of polarization plates that wave curling is suppressed, it is to divide at the single or double of polaroid Other stacking is also bonded with the manufacture method of polarization plates of protective film, wherein,
Described polaroid and protective film are overlapped via adhesive and obtain duplexer, then, makes described duplexer adhere to Length direction along this duplexer is formed as the convex surface of arc-shaped, described duplexer is irradiated active energy ray simultaneously and makes institute State adhesive polymerizing curable.
2. the manufacture method of polarization plates as claimed in claim 1, wherein,
Described convex surface is the outer peripheral face of roller.
3. the manufacture method of polarization plates as claimed in claim 2, wherein,
The surface temperature of described roller is 20～25 DEG C.
4. the manufacture method of polarization plates as claimed in claim 2, wherein,
Adhesive layer is in the duplexer of its uncured state in the period by described roller with 30mJ/cm2Ultraviolet accumulated light Irradiate active energy ray.
5. the manufacture method of polarization plates as claimed in claim 1 or 2, wherein,
Described polaroid is to be one-way stretched and polyvinyl alcohol film that iodine or dichroic dye are adsorbed and have been orientated, described guarantor The side protecting thin film is amorphism polyolefin resin film, and the opposing party is triacetylcellulose film.
6. the manufacture method of the polarization plates stated such as claim 1, wherein,
The thickness of described adhesive layer is 1～10 μm.
7. the manufacture method of the polarization plates stated such as claim 1, wherein, the exposure rate of described active energy ray be 0.1～ 100mJ/cm2。
8. the manufacture method of the polarization plates stated such as claim 1, wherein,
Irradiate more irradiating active energy ray by direction of transfer downstream than described convex surface, make the complete polymerizing curable of adhesive.
9. wave crimps a producing device for the polarization plates being suppressed, and it has:
In the one side of protective film or the mechanism of the double spread adhesive of polaroid；
Protective film is made to coincide with the mechanism of single or double of polaroid via adhesive layer；With
For making the mechanism of adhesive polymerizing curable, wherein,
For making the mechanism of described adhesive polymerizing curable include: the polaroid of the protective film that makes to have overlapped adheres to outer peripheral face also The roller simultaneously transmitted, and the active-energy beam irradiating apparatus of the outer peripheral face irradiation active energy ray to this roller.
10. the producing device of polarization plates as claimed in claim 9, wherein, described active-energy beam irradiating apparatus is ultraviolet Irradiation unit.
The producing device of 11. such as claim 9 polarization plates stated, wherein, the exposure rate 0.1 of described active energy ray～ 100mJ/cm2。
The producing device of 12. polarization plates as claimed in claim 9, wherein,
Possess to be configured at and more lean on direction of transfer downstream than described active-energy beam irradiating apparatus, for making adhesive be fully cured The 2nd active-energy beam irradiating apparatus.
The producing device of 13. polarization plates as claimed in claim 9, wherein,
The surface temperature of described roller is 20～25 DEG C.
CN201610576416.7A 2007-11-30 2008-11-24 Method for manufacturing polarizing plate Active CN106199810B (en)

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JP2007-311699 2007-11-30
JP2007311699A JP4861968B2 (en) 2007-11-30 2007-11-30 Manufacturing method of polarizing plate
CNA2008101910916A CN101498806A (en) 2007-11-30 2008-11-24 Method of manufacturing polarizing plate

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CN106199810B CN106199810B (en) 2020-03-10

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