CN102736157B - The manufacture method of polarization plates - Google Patents
The manufacture method of polarization plates Download PDFInfo
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- CN102736157B CN102736157B CN201210077791.9A CN201210077791A CN102736157B CN 102736157 B CN102736157 B CN 102736157B CN 201210077791 A CN201210077791 A CN 201210077791A CN 102736157 B CN102736157 B CN 102736157B
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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
-
- 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
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of method, it is made by ultraviolet hardening adhesive by transparent resin film (2, 3) light polarizing film (1) formed by polyvinyl alcohol resin is fitted in, make duplexer (4), irradiate, to it, the ultraviolet sent from ultraviolet lamp (16) and make described adhesive solidify, the method manufacturing polarization plates (5), the wavelength filter (18) that the light of the wavelength of more than 400nm can be blocked by configuration between ultraviolet lamp (16) and duplexer (4), substantially the light of the wavelength of more than 400nm is blocked, thus duplexer (4) is irradiated the ultraviolet of substantially wavelength containing only below 400nm, described adhesive is made to solidify.In accordance with the invention it is possible to suppression is in the incidental hot spot of polarization plates.
Description
Technical field
The method that the present invention relates to manufacture polarization plates, this polarization plates can be used as constituting liquid crystal indicator
One of optics.
Background technology
In recent years, consume that electric power is little, work at lower voltages, lightweight and slim liquid crystal indicator,
Show as information such as mobile phone, portable information terminal, computer monitor and TVs and set
Standby and popularize rapidly.
The polarization plates used as one of optics constituting liquid crystal indicator, has in absorption two
Color pigment and at least one side of light polarizing film that the polyvinyl alcohol resin that is orientated is formed, usual two sides patch
Close the composition having transparent resin film, be pasted on liquid crystal cells by adhesive phase, make as liquid crystal panel
With.At the transparent resin film that the one side of light polarizing film is fitted, there is protection and formed by polyvinyl alcohol resin
The function as what is called protecting film of light polarizing film, but at the two sides of light polarizing film laminating transparent resin film
In the case of, the transparent resin film of the opposing party, in addition to the function as simple protecting film, more than
Have be improved to using the optical compensation of liquid crystal cells, the visual angle of liquid crystal indicator purpose as so-called
The function of optical compensation films.
In the light polarizing film laminating with transparent resin film, employ so far with polyvinyl alcohol resin
For the aqueous solution of main constituent as adhesive, but the adhesive of this water solution system is at the resin that can apply
Exist on film and limit, and for dry solidification, need the corresponding time.Additionally, in recent years,
Require diversified transparent resin film as protecting film and as optical compensation films, fitted in
Light polarizing film.Can be applied to that various transparent resin film, hardening time are short accordingly, because have, will
The advantages such as harmful substance dissipates in air, it is therefore proposed that use carrying of ultraviolet hardening adhesive
Case.Such as, JP2004-245925-A discloses following technology: use by with without aromatic rings
Epoxide, as the adhesive of the compositions formation of main constituent, makes transparent resin film (in the document
It is referred to as " protecting film ") it is overlapped in light polarizing film, it is irradiated the active energy ray with ultraviolet as typical example
And make adhesive solidify, make polarization plates.
But, the polarization that its irradiation ultraviolet radiation so uses ultraviolet hardening adhesive, manufacture
Plate, there are the following problems: by the heat produced from ultraviolet lamp, saturating at irradiation ultraviolet radiation
Ming tree adipose membrane face produces the small deformation being referred to as " hot spot ", the outward appearance of infringement polarization plates.About so
Hot spot, such as when making the light of surface reflector fluorescent light of polarization plates, if without the polarization of hot spot
Plate, the picture of fluorescent lamp maps as former state, and for creating the polarization plates of hot spot, as multiple tiny
White point observe this speckle (concavo-convex).If the polarization plates creating hot spot is applied to liquid crystal display
Device, also produces same white point in the image of display.Hot spot is there is not therefore, it is intended that manufacture
Polarization plates.
JP2009-134190-A discloses following method: by light polarizing film and transparent resin film being divided
Do not carry continuously with strip, after transparent resin film being fitted in this light polarizing film by adhesive, limit
Make the duplexer obtained and the convex surface being formed as arc-shaped along its conveying direction closely sealed, typically with roller
Closely sealed, while make adhesive polymerizing curable, thus manufacture polarization plates.And, as the representative of adhesive
Example, ultraviolet hardening adhesive can be enumerated, recorded in its paragraph 0021 make above-mentioned
Roller is as surface temperature being set as, the chill roll of 20～25 DEG C plays a role.If using such limit
It is sealed at the method that chill roll limit carries out ultraviolet irradiation, then can expect easily employing ultraviolet
The above-mentioned hot spot that the polarization plates of curing type adhesive occurs also is suppressed.But, even if use with
The method that chill roll is closely sealed, due to ultraviolet irradiation intensity, the difference of the transporting velocity of polarization plates,
The most still produce hot spot.
Therefore, the problem of the present invention is, develops, provides the side being difficult to produce hot spot in polarization plates
Method, it for fitting in light polarizing film by ultraviolet hardening adhesive, irradiate it by transparent resin film
Ultraviolet and make ultraviolet hardening adhesive solidify manufacture polarization plates method.
Repeatedly further investigate to solve this problem, found that: make by ultraviolet hardening glue
Stick and transparent resin film is fitted in light polarizing film duplexer irradiate ultraviolet, for substantially containing only
The ultraviolet of the wavelength of below 400nm is effective, thus completes the present invention.
Summary of the invention
That is, the present invention comprises the description below.
[1] method manufacturing polarization plates, it includes transparent resin by ultraviolet hardening adhesive
Film fits in the light polarizing film formed by polyvinyl alcohol resin, makes described gluing to its irradiation ultraviolet radiation
Agent solidifies, and the solidification of described adhesive is by irradiating the purple of substantially wavelength containing only below 400nm
Outside line and carry out.
[2] method as described in [1], wherein, the substantially ultraviolet of the wavelength containing only below 400nm,
It is the light of the wavelength making the light sent by ultraviolet lamp by more than 400nm can be blocked
Wave filter and the ultraviolet that obtains, the light of the wavelength of more than 400nm is substantially blocked.
[3] method as described in [1] or [2], wherein, on the two sides of light polarizing film respectively by described ultraviolet
Line curing type adhesive laminating transparent resin film, carries out described ultraviolet from the transparent resin film side of a side
Irradiation.
[4] method as according to any one of [1]～[3], wherein, carries strip the most continuously
Light polarizing film and the transparent resin film of strip, by described ultraviolet hardening adhesive by described transparent
Resin molding fits in this light polarizing film, the duplexer obtained is wound up into have orthogonal with its conveying direction
The outer peripheral face of the roller of axle also makes it closely sealed, from the described duplexer of the duplexer obtained with described roller phase
Anti-side carries out described ultraviolet irradiation.
[5] method as described in [4], wherein, carries the light polarizing film of strip and 2 the most continuously
The transparent resin film of strip, by described ultraviolet hardening adhesive respectively by described transparent resin
Film fits in the two sides of light polarizing film, the duplexer obtained is wound up into the outer peripheral face of described roller and makes it close
Close, carry out described ultraviolet from the transparent resin film side of the side contrary with described roller of described duplexer
Irradiation.
According to the present invention, in the case of adopting with the following method, it is possible to manufacture hot spot and obtain pressing down
The polarization plates of system, described method is employing ultraviolet hardening adhesive, makes its irradiation ultraviolet radiation
Its solidification, thus make light polarizing film and the bonding method of transparent resin film.
Accompanying drawing explanation
Fig. 1 is the general of the example manufacturing device of the polarization plates representing the method being suitable for carrying out the present invention
Slightly side view.
Fig. 2 is to represent the metal halide lamp used in embodiment described later as ultraviolet light source
Luminescent spectrum (curve A), be equally used for the wavelength filtering of the blocking-up of the light of more than wavelength 400nm
The coordinate diagram of the Optical transmission spectrum (curve B) of device.
In figure:
1 ... light polarizing film, 2 ... the first transparent resin film, 3 ... the second transparent resin film, 4 ...
Duplexer before solidification, 5 ... polarization plates, 11 ... the first coating machine, 12 ... the first coating machine
The gravure roll having, 13 ... the second coating machine, 14 ... the gravure roll that the second coating machine has,
16 ... ultraviolet lamp, 18 ... wavelength filter, 21,22 ... laminating niproll,
23 ... contact (chill roll), 24 ... conveying deflector roll, 25,26 ... batch front nip rollers,
28 ... deflector roll, 30 ... goods roller, A ... the luminescent spectrum of metal halide lamp, B ... filter
The Optical transmission spectrum of ripple device.
Detailed description of the invention
With reference to Fig. 1, in the present invention, by ultraviolet hardening adhesive by transparent resin film 2,3
Fit in light polarizing film 1, make duplexer 4, irradiate to this duplexer 4 from ultraviolet lamp 16
Ultraviolet, makes above-mentioned adhesive solidify, and manufactures polarization plates 5.
Laminating niproll 21,22 is used in the light polarizing film 1 laminating with transparent resin film 2,3.
Transparent resin film 2,3 can fit in the one side of light polarizing film 1, it is possible to fits in the two sides of light polarizing film 1,
But fit in the two sides of light polarizing film 1 the most as illustrated.In the shown example, by after laminating
Duplexer 4 is sealed at the contact 23 along its conveying direction with convex surface, from holding sheet stack 4
Ultraviolet lamp 16 irradiation ultraviolet radiation configured in its opposition side.Contact 23 is the most as shown
It is made up of roller like that.The polarization plates 5 manufactured through conveying deflector roll 24 and batch front nip rollers 25,
26, it is wound to goods roller 30.Saturating at one side, first transparent resin film 2 and second of light polarizing film 1
The face each not having coating binder of ming tree adipose membrane 3, is appropriately arranged with the deflector roll 28,28 of conveying.
Straight arrows in figure refers to the flow direction of film, and curve arrow refers to the direction of rotation of roller.
Additionally, the ultraviolet substantially wavelength containing only below 400nm irradiated to duplexer 4.?
In the example of diagram, in the luminous side of ultraviolet lamp 16 at ultraviolet lamp 16
With between duplexer 4, configuration can block the wavelength filter 18 of the light of the wavelength of more than 400nm,
Make the light sent from ultraviolet lamp 16 by this wavelength filter 18, substantially block
The light of the wavelength of more than 400nm, shines according to the ultraviolet of in fact wavelength containing only below 400nm
The mode being mapped to duplexer 4 is constituted.
In ultraviolet lamp 16, as described later, mercury lamp, metal halide lamp etc. is used to make
For light source, although this general ultraviolet light source how ultraviolet containing below wavelength 400nm, but its
Wavelength region is distributed from ultraviolet territory to visible field width amplitude, therefore, presents white during by this light source igniting
Color or even purple.In the case of using such common ultraviolet light source, pass through as illustrated
Wavelength filter 18, substantially blocks the light of the wavelength of more than 400nm.On the other hand, also just like
Such as quasi-molecule laser source the most only sends the light of the ultraviolet of below wavelength 400nm like that
Source, therefore can also use such light source.But, such the most only send wavelength 400nm
The light source price general charged of following ultraviolet is high, therefore uses and uses the ultraviolet that visible ray also occurs
Source as illustrated by wavelength filter 18, the light of wavelength that substantially blocks more than 400nm
Mode be practical.
The manufacture method of the present invention, also is able to be applied with following individual sheet form certainly: uses and cuts out
It is cut to individual light polarizing film and transparent resin film, by ultraviolet hardening adhesive, they is fitted,
Make above-mentioned adhesive solidify to its irradiation ultraviolet radiation, manufacture polarization plates, particularly in commercial production
In, as shown in fig. 1, it is applied to quantity-produced mode.Additionally, ultraviolet radiation modality is not
It is limited to diagram side such, that irradiate when being sealed at contact 23 being preferably made up of roller
Formula, such as, is configured without in the side contrary with ultraviolet lamp 16 of duplexer 4 especially
Support so that contact and the mode of irradiation ultraviolet radiation be certainly also contained in the present invention.
Hereinafter, first to constituting the light polarizing film 1 of polarization plates 5, transparent resin film 2,3 and adhesive
Illustrate, then, carry out the explanation of the manufacture method about polarization plates.
[light polarizing film]
Light polarizing film is formed by polyvinyl alcohol resin, and this polyvinyl alcohol resin is by by polyvinyl acetate
The resin saponification of ester system and obtain.About polyvinyl acetate system resin, except as vinylacetate
Beyond the polyvinyl acetate of homopolymer, it is also possible to be vinylacetate and can be single with other of its copolymerization
The copolymer of body.As with other vinyl acetate copolymerized monomers, such as unsaturated carboxylic can be enumerated
Acids, unsaturated sulfonic acid class, olefines, vinyl ethers, there is the acrylic amide etc. of ammonium.
The saponification degree of polyvinyl alcohol resin is usually 85～100 moles of %, preferably 98 moles more than %.
Polyvinyl alcohol resin can be modified further, such as, it is also possible to uses the polyethylene modified with aldehydes
Acetal etc..The average degree of polymerization of polyvinyl alcohol resin is usually 1000～about 10000, preferably
It it is the scope of 1500～5000.
Polyvinyl alcohol resin is made membranaceous product to use as the original membrane of light polarizing film.Manufacture
The method of polyvinyl alcohol resin film is not particularly limited, it is possible to use known method masking.By gathering
The original membrane that vinyl alcohol resin is formed, such as, can become the thickness about 10～150 μm.
Light polarizing film generally goes through following operation manufacture: polyvinyl alcohol resin film carries out the work stretched
Sequence；With dichromatic pigment, polyvinyl alcohol resin film is dyeed so that it is absorption dichromatic pigment
Operation；With boric acid aqueous solution the polyvinyl alcohol resin film being adsorbed with dichromatic pigment processed
Operation；With after the process utilizing this boric acid aqueous solution, carry out the operation washed.
Stretching can be carried out before the dyeing using dichromatic pigment, it is also possible to carry out with dyeing simultaneously,
Can also carry out after dyeing.In the case of stretching after dyeing, this stretching can process at boric acid
Before carry out, it is possible to boric acid process in carry out.It is of course also possible to carry out in these multiple stages
Stretching.During stretching, can stretch between the niproll that peripheral speed is different, it is possible to use hot-rolling
Stretch.Furthermore, it is possible to be the dry type stretching carrying out in an atmosphere stretching, it is also possible to be with molten
Agent there occurs the wet tensile carrying out stretching under swelling state.Its stretching ratio is usually 3～8 times
Left and right.
When using dichromatic pigment that polyvinyl alcohol resin film is dyeed, use such as by polyethylene
Alcohol resin film impregnated in the method in the aqueous solution containing dichromatic pigment.As dichromatic pigment,
Specifically can use iodine or dichromatic organic dyestuff.Further, process in the dyeing using dichromatic pigment
Before, the impregnation process that preferably polyvinyl alcohol resin film is implemented in water and make it the most swelling.
In the case of using iodine as dichromatic pigment, generally use and polyvinyl alcohol resin film is soaked
The method that stain dyes in the aqueous solution containing iodine and potassium iodide.About the iodine in this aqueous solution and iodate
The content of potassium, relative to every 100 weight parts waters, iodine is usually 0.01～1 weight portion, and potassium iodide leads to
It is often 0.5～20 weight portions.Temperature for the aqueous solution of dyeing is usually 20～40 DEG C, at this water
Dip time (dyeing time) in solution usually 20～1800 seconds.
On the other hand, in the case of using dichromatic organic dyestuff as dichromatic pigment, generally
Use polyvinyl alcohol resin film immersion in the aqueous solution of the dichroic organic dye of containing water-soluble
And the method dyeed.About the content of dichroic dye in this aqueous solution, relative to every 100 weight portions
Water, usually 1 × 10-4～10 weight portions, preferably 1 × 10-3～1 weight portion.This aqueous solution can
Containing the such inorganic salt of sodium sulfate as dyeing assistant.Temperature for the aqueous dye solutions of dyeing is led to
Being often 20～80 DEG C, the dip time (dyeing time) in this aqueous solution is usually 10～1800
Second.
Boric acid after using dichromatic pigment to dye processes, and uses dyed polyethenol series
Resin molding impregnated in the method for borated aqueous solution to be carried out.About borated aqueous solution mesoboric acid
Amount, relative to every 100 weight parts waters, usually 2～15 weight portion, preferably 5～12 weight portions.
In the case of using iodine as dichromatic pigment, this borated aqueous solution is preferably possibly together with iodate
Potassium.About the amount of potassium iodide in borated aqueous solution, relative to every 100 weight parts waters, usually
0.1～15 weight portions, preferably 5～12 weight portions.Dip time in borated aqueous solution
Usually 60～1200 seconds, preferably 150～600 seconds, more preferably 200～400 seconds.Boracic
The temperature of aqueous acid is usually more than 50 DEG C, preferably 50～85 DEG C, more preferably 60～
80℃。
Polyvinyl alcohol resin film after processing boric acid generally carries out washing process.Washing processes and can adopt
With such as the method in water of the polyvinyl alcohol resin film immersion after boric acid processes being carried out.Water
The temperature washing the water in process is usually 2～40 DEG C, and dip time is usually 2～120 seconds.Washing
Rear enforcement dried, obtains light polarizing film.Dried can use air drier, far infrared to add
Hot devices etc. are carried out.
This dried is being held in 40～100 DEG C, is carrying out in the drying oven of preferably 50～100 DEG C
About 30～600 seconds.Drying oven can be multiple, in the case of arranging multiple drying oven, each
Temperature can be identical, it is also possible to different.Arranging in the case of multiple drying oven is dried, special
The most preferably from drying oven leading portion, thermograde is set by temperature in the way of the rising of drying oven back segment.
The thickness of the light polarizing film so obtained can be about such as 5～40 μm, preferably 10～35 μm.
[transparent resin film]
In the present invention, in the one of the fabricated as described above light polarizing film 1 formed by polyvinyl alcohol resin
Face or two sides, by ultraviolet hardening adhesive, transparent resin film 2,3 of fitting, manufacture polarization
Plate 5.
Transparent resin film 2,3 is the film formed by the thermoplastic resin with the transparency, partially
The various transparent resin films used in vibration plate field can use too in the present invention.If enumerating energy
Become the example of the resin of transparent resin film 2,3, have with triacetyl cellulose, diacetyl cellulose
For the acetate fiber prime system resin of typical example, amorphous polyolefins with cyclic olefine resin as typical example
Resin, crystalline polyolefin resin with polypropylene-based resin as typical example, with methyl methacrylate
Be resin be the acrylic resin of typical example, with PET series resin as representative
The polyester resin of example, polycarbonate resin etc..
Acetate fiber prime system resin is the partially or completely carboxylate of cellulose, can enumerate such as fiber
The acetate of element, propionic ester, butyrate, their mixed ester etc..More specifically can enumerate three second
Acyl cellulose, diacetyl cellulose, cellulose acetate propionate, acetylbutyrylcellulose etc..By acetic acid
The film of cellulose-based resin formation, can use suitable commercially available product.It is suitable in the present invention if enumerated
The example of the most commercially available cellulose acetate resin film used, all represents have by richness by trade name
" FUJITAC TD80 ", " FUJITAC TD80UF " that scholar film Co., Ltd. sells and
" FUJITAC TD80UZ ", " KC8UX2M " that sold by Konica Minolta Opto Inc.,
" KC8UY " and " KC4UY " etc..
About cellulose acetate resin film, when polarization plates is pasted on liquid crystal cells, sometimes configure
In liquid crystal cell side.Mend in such a situation it is preferred to give optics to this cellulose acetate resin film
Repay function.Can enumerate and such as make acetate fiber prime system resin contain the chemical combination with phase contrast regulatory function
The film of thing, it is coated with the chemical combination with phase contrast regulatory function on the surface of cellulose acetate resin film
Film that thing obtains, cellulose acetate resin film is uniaxially or biaxially stretched the film etc. obtained.If row
Lift the example of the most commercially available acetate fiber prime system optical compensation films, have and sold by Fuji Photo Film Co., Ltd.
" WV (Wide View) the FILM WV BZ 438 " that sell and " WV (WIDE VIEW) FILM
WV EA ", " KC4FR-1 ", " KC4HR-1 " that sold by Konica Minolta Opto Inc. and
" KC4UEW " etc..
Amorphous polyolefins resin be have from norborene, multi-ring norborneol alkene monomer such
The resin of the construction unit of cyclic olefin, it is also possible to be cyclic olefin and other have polymerism carbon-
The copolymer of the compound of carbon double bond.Specifically can enumerate and norborene or derivatives thereof ring-opening metathesis is gathered
Close, the hydrogenation of polymer obtained is made the non-existent referred to as thermoplasticity saturated norbornene of unsaturated bond
Be the resin of resin, make chain olefin and/or aromatic ethenyl compound and norborene or its spread out
The resin etc. of biological addition polymerization.
Film by amorphous polyolefins resin formation, it is possible to use suitable commercially available product.If enumerating suitable
Close the example of the most commercially available amorphous polyolefins resin molding used in the present invention, all use commodity famous-brand clock
Show there be " the ATON FILM " that sold by JSR Corp., by Japan's ZEON strain formula meeting
What society sold " ZEONOR FILM ", " the エ ス that sold by Sekisui Chemical Co., Ltd
シ mono-Na phase difference FILM " etc..
Crystalline polyolefin resin is using ethylene, the such chain olefin of propylene as essential building blocks
Crystalline resin, particularly with polypropylene-based resin as representative.In polypropylene-based resin, remove
Beyond the homopolymer of propylene, also comprise propylene and can with other the monomer such as ethylene of its copolymerization,
The random copolymer of alpha-olefin, block copolymer etc..The film formed by polypropylene-based resin also is able to make
By suitable commercially available product.If enumerating the example of the most commercially available suitable polypropylene-based resin film, all use
Trade name represents, have sold by Mitsui Chemicals TOHCELLO Co., Ltd. " TOHCELLO ",
" the パ イ レ Application FILM " that sold by Toyo Boseki K.K, sold by Dongli Ltd.
" ト レ Off ア Application ", " the サ Application ト Star Network ス " that sold by サ Application ト ツク ス Co., Ltd.,
" the FILMAX CPP FILM " sold by FILMAX society etc..
Acrylic resin is the resin using alkyl methacrylate as essential building blocks, its
In, using methyl methacrylate as the methyl methacrylate system resin of essential building blocks be generation
Table.The film formed by acrylic resin also is able to use suitable commercially available product.If it is suitable to enumerate
The example of the most commercially available acrylic resin film, all represents by trade name, has by Sumitomo Chemical strain formula
" the テ Network ノ ロ イ ", " the ア Network リ プ レ Application " sold by Mitsubishi Rayon Co., Ltd that commercial firm sells
Deng.
Polyester resin is the resin in main chain with ester bond-COO-, has polyethylene terephthalate
It is resin, polybutylene terephthalate (PBT) system resin, PEN system resin etc.,
Wherein, PET series resin is to represent.PET series tree
The resin that 80 moles of more than % of fat typically repetitive are made up of ethylene glycol terephthalate,
Can be containing the construction unit from other copolymer compositions.By PET series resin shape
The film become is used as suitable commercially available product.If enumerating the most commercially available suitable poly terephthalic acid second
The example of diol ester resin film, all represents have and sold by Mitsubishi Plastics Inc by trade name
" ダ イ ア ホ イ レ ", " the テ イ ジ Application sold by Supreme Being people デ ユ ポン FILM Co., Ltd.
テ ト ロ Application FILM ", by Toyo Boseki K.K sell " エ ス テ Le spins in Japan
FILM " and " U ス モ シ ヤ イ Application ", " the Le ミ ラ mono-" that sold by Dongli Ltd., by
" the エ Application Block レ Star ト " that Unitika Corp sells etc..
Polycarbonate resin is the resin in main chain with carbonic acid ester bond-O-CO-O-, such as, with double
Phenol A be the resin of raw material be represent.The film formed by polycarbonate resin is used as suitable city
Sell product.If enumerating the example of the most commercially available suitable polycarbonate resin, all represent by trade name,
There is " the ユ mono-ピ ロ sold by Rhizoma Sparganii エ Application ジ ニ ア リ Application グ プ ラ ス チ ツク ス Co., Ltd.
Application シ mono-ト ", " パ Application ラ イ ト シ mono-ト " that sold by Teijin Chemicals, Ltd. etc..
For transparent resin film 2,3, before fitting in light polarizing film 1, binding face can be implemented soap
Change process, sided corona treatment, primary coat process, anchor the easy bonding process such as coating process.Additionally, thoroughly
The face of the opposition side of the binding face with light polarizing film 1 of ming tree adipose membrane 2,3, can have hard conating, prevent
The various process layer such as reflecting layer, antiglare layer.The thickness of transparent resin film 2,3 is usually 5～200 μm
The scope of left and right, preferably 10～120 μm, more preferably 10～85 μm.
[adhesive]
For the adhesive by light polarizing film 1 with transparent resin film 2,3 laminating, from against weather, folding
From the viewpoint of penetrating rate, cationically polymerizable etc., use ultraviolet hardening adhesive.Ultraviolet is solid
In change type adhesive, there is the adhesive solidified by radical polymerization and by cation polymerization curing
Adhesive, but particularly preferably use described in above-mentioned JP2004-245925-A, with intramolecular not
Epoxide containing aromatic rings is the adhesive of the cationically polymerizable of main constituent.As such point
Without the epoxide of aromatic rings in son, have such as hydrogenated epoxy resin, alicyclic epoxy resin,
Aliphatic epoxy resin etc..Compound at the cationically polymerizable with epoxide as typical example
In, fit through ultraviolet irradiation and produce cation kind or lewis acid, cause cationic polymerization
Property compound the light cationic polymerization initiators of cationic polymerization, modulation ultraviolet hardening is gluing
Agent.In ultraviolet hardening adhesive, the most also can fit through heating and produce cation kind or
Lewis acid, cause cationically polymerizable compound cationic polymerization hot cationic polymerization cause
The various additive such as agent, light sensitizer.
[manufacture method of polarization plates]
Manufacture method referring next to the Fig. 1 polarization plates to the present invention relates to illustrates.For figure
The device of 1 re-starts explanation, in this example, supplies to the one side of the light polarizing film 1 carried in a certain direction
To the first transparent resin film 2, the another side to light polarizing film 1 supplies the second transparent resin film 3, by patch
Share niproll 21,22 and these 3 film laminatings are become duplexer 4, shone by from ultraviolet
After the ultraviolet of injection device 16 irradiates, through conveying deflector roll 24 with batch front nip rollers 25,26,
The polarization plates 5 obtained is wound to goods roller 30, by this way constituent apparatus.
About light polarizing film 1, how in not shown light polarizing film manufacturing process, use aforesaid method,
Make polyvinyl alcohol resin film boron after uniaxial tension, the dyeing of employing dichromatic pigment and dyeing
Acid treatment and former state supply under the state that manufactures, certainly, it is possible to by what light polarizing film manufacturing process manufactured
Product temporarily batches after roller, uses extractor to draw.On the other hand, by the first transparent resin film 2
Extractor is used to draw by not shown roller respectively with the second transparent resin film 3.By each film with identical
Transporting velocity carry in the way of flow direction is identical.
About the first transparent resin film 2, fit in the face of light polarizing film 1 at it, in advance by the first coating
After machine 11 is coated with adhesive, this adhesive coated face is fitted in the one side of light polarizing film 1.Another
Aspect, about the second transparent resin film 3, fits in the face of light polarizing film 1 at it, is coated with by second in advance
After cloth machine 13 is coated with adhesive, this adhesive coated face is fitted in the another side of light polarizing film 1.
In the first coating machine 11 and the second coating machine 13, from the gravure roll 12,14 each having,
Respectively adhesive is coated the first transparent resin film 2 and the second transparent resin film 3.Wherein, so-called
Gravure roll, is to have reeded roller, adhesive is filled in this groove in advance, in this condition thoroughly
Rotate on ming tree adipose membrane 2,3, thus adhesive is transferred on transparent resin film 2,3.This institute
In the example shown, gravure roll 12,14 is relative to the first transparent resin film 2 and the second transparent resin film
The respective conveying direction of 3, at respective contact site to reversely rotate.For coating machine 11,13,
In addition, it is possible to other coating method of application scraper, wire rod, mould coating machine, spot printing machine etc.,
If it is considered that film coated, the degree of freedom of trace (path line), answer equity for wide cut,
Preferably there is the gravure coater of the such gravure roll 12,14 of diagram.
As the first coating machine 11 and the second coating machine 13, use and there is the recessed of gravure roll 12,14
In the case of print roll-coater carries out the coating of adhesive, by regulation and transparent resin film 2,3
The ratio of the suitable linear velocity of gait of march and the revolving circumferential velocity degree of gravure roll 12,14, it is possible to suitable
Thickness when regulation adhesive layer.The coating thickness of adhesive layer, the most preferably from about 1～10 μm.
For being coated with the first transparent resin film 2 and the second transparent resin film 3 of adhesive, respectively will
Adhesive coated face fits in light polarizing film 1, is clamped and at thickness with niproll 21,22 by laminating
Pressurize on direction, become the duplexer 4 of three, carry to contact 23.Contact 23 has edge
The conveying direction (length direction) of above-mentioned duplexer 4 is formed as the convex surface of arc-shaped.And, will
Duplexer 4 limit and the convex surface closely sealed limit conveying of contact 23, be subject in this process from ultraviolet
The ultraviolet of beam irradiating apparatus 16 irradiates, and makes adhesive polymerizing curable.In the shown example, connect
Contact 23 is made up of roller.About contact 23, in addition, the most also can be made up of endless belt etc.,
But it is usually and is made up of the such roller of diagram, be specifically made up of metallic roll.
Especially, contact 23 is constituted by metallic roll so that it is there is temp regulating function, as cold
But roller plays a role, and is effective from the viewpoint of the impact making the heat produced by ultraviolet irradiation is few
's.Temp regulating function can arrange fluid passage by the inside in metallic roll so that it is in flow through cooling
The mode etc. of fluid such as water give.In this case, the surface temperature of chill roll is preferably
About 20～25 DEG C.In the case of constituting contact 23 by metallic roll, plating is implemented on its surface hard
Chromium process, pottery spraying plating process etc., it is also effective for improving case hardness.
The second transparent resin film 3 side making duplexer 4 is closely sealed with contact 23, irradiates from ultraviolet
The device 16 that is first transparent resin film 2 side, opposition side irradiation ultraviolet radiation to duplexer 4.
Now, in the luminous side of ultraviolet lamp 16, i.e. ultraviolet lamp 16
And between duplexer 4, configuration can block the wavelength filter 18 of the light of the wavelength of more than 400nm,
Make the light sent from ultraviolet lamp 16 by this wavelength filter 18, substantially block
The light of the wavelength of more than 400nm, in fact irradiates the ultraviolet of the wavelength containing only below 400nm
To duplexer 4.Irradiated by this ultraviolet, will be located in the first transparent resin film 2 and light polarizing film 1 it
Between adhesive and adhesive between light polarizing film 1 and the second transparent resin film 3 solidify respectively,
By bonding with light polarizing film 1 with light polarizing film 1 and the second transparent resin film 3 for the first transparent resin film 2.
The material of wavelength filter 18 is not particularly limited, but from the viewpoint of thermostability, excellent
Choosing on the glass substrate, uses vacuum vapour deposition, ion assisted deposition method, sputtering method etc. by electrolyte
Film or metal film masking.For wavelength filter 18, can use can be by the wavelength of more than 400nm
The suitable commercially available product that blocks of light, but especially, wavelength light between 250nm～400nm
The meansigma methods of absorbance be preferably more than 80%, particularly preferably more than 85%, and at wavelength
More than 400nm until the meansigma methods of absorbance of light of scope of at least 500nm is preferably smaller than 5%,
More preferably less than 2%, particularly preferably less than 1%.
The light source used in ultraviolet lamp 16 is not particularly limited, it is possible to use at wavelength
Below 400nm have send out photodistributed, such as low pressure mercury lamp, medium pressure mercury lamp, high voltage mercury lamp, super
High voltage mercury lamp, chemical lamp, black light lamp, microwave-excited mercury lamp, metal halide lamp etc..To ultraviolet
The photo-irradiation intensity of curing type adhesive, can determine according to the composition of the adhesive used etc., still without special
Do not limit, but preferably exposure rate to the effective wavelength region of activation of initiator be 0.1～
1000mW/cm2。
About the ultraviolet irradiation time to duplexer 4, according to the ultraviolet hardening adhesive used
Composition etc. determined, be still not particularly limited, but preferably using as exposure rate and irradiation time
The accumulated light of product representation is 10～2000mJ/cm2Mode be set.Use as shown that
Sample makes under the state that duplexer 4 is closely sealed with contact 23 in the case of the mode of irradiation ultraviolet radiation,
Duplexer 4 is by during contact 23, it is achieved this accumulated light is 10～2000mJ/cm2, this
Make on the abundant polymerizing curable of adhesive particularly preferred.If accumulated light now is very few, it is possible to come
The generation of the spike of self-initiating agent is not enough, and the solidification of adhesive becomes insufficient.On the other hand, as
Really this accumulated light is excessive, sometimes due to irradiate ultraviolet, transparent resin film, light polarizing film and/
Or adhesive produces deterioration.
The linear velocity of duplexer 4 is also not particularly limited, but preferably limit is at conveying direction (length direction)
The tension force of upper applying 100～800N, while be 10～2000mJ/cm according to making accumulated light2Side
Formula sets linear velocity in the range of 10～about 50m/ minute.To ultraviolet lamp 16 with
Distance between duplexer 4 is also not particularly limited, but preferably with accumulated light become 10～
2000mJ/cm2Mode, set in the range of 10～500mm degree from constitute ultraviolet irradiate
The ultraviolet light source of device 16 (is making duplexer 4 to the distance of duplexer 4 as shown in Figure 1 and is connecing
In the case of contact 23 is closely sealed, both beelines).It is positioned at ultraviolet lamp 16 side
Transparent resin film 2, in order to utilize the ultraviolet of irradiation effectively to make adhesive solidify, preferably to composition
Transmission in part or all of region of the effective wavelength region of activation of the initiator of adhesive
Rate is more than 60%.
By ultraviolet irradiation, by the duplexer 4 after adhesive solidification, become polarization plates 5, warp
Cross conveying deflector roll 24 and batch front nip rollers 25,26, being wound to goods roller 30.
[other explanations]
In the present invention, as it was previously stated, light polarizing film 1 one or both sides fit transparent resin film 2,
3, it is possible to make polarization plates 5, as preferably as illustrated by so far, in the two of light polarizing film 1
Face laminating transparent resin film 2,3.On the other hand, for only light polarizing film 1 one side fit transparent
Resin molding and make the mode of polarization plates, by omitting the transparent tree about a side from above explanation
The explanation of adipose membrane, can easily understand that enforceable degree to those skilled in the art.
Embodiment
Embodiment described below carries out more specific description to the present invention, but the present invention is not implemented by these
The restriction of example.
[embodiment 1]
Using the device configured the most as illustrated in figure 1, conveying iodine is adsorbed in polyethylene continuously
Alcohol film and the light polarizing film 1 of thickness about 30 μm being orientated, to its one side supply by Japan's ZEON strain formula
Thickness 60 μm that commercial firm the obtains, " ZEONOR as amorphous polyolefins resin molding of wide 1330mm
FILM " as the first transparent resin film 2, obtain by Fuji Photo Film Co., Ltd. to another side supply
Thick 80 μm, width are still " FUJITAC TD80 " conduct as tri acetyl cellulose membrane of 1330mm
Second transparent resin film 3.Then, at the binding face with light polarizing film 1 of the first transparent resin film 2,
By first the coating machine 11 (" Micro of Machinery Co., Ltd. of Fuji with gravure roll 12
Chamber Doctor: マ イ Network ロ チ ヤ Application バ mono-De Network タ mono-"), and at the second transparent resin
The binding face with light polarizing film 1 of film 3, still (the most same by second coating machine 13 with gravure roll 14
Sample is " the マ イ Network ロ チ ヤ Application バ mono-De Network タ mono-" of Machinery Co., Ltd. of Fuji), according to making thickness
Degree is about the mode of 2 μm and is respectively coated epoxide and the cooperation of light cationic polymerization initiators
The ultraviolet hardening adhesive become.
It follows that make the first transparent resin film 2 and the coating of the second transparent resin film 3 respective adhesive
Face is overlapping with the two sides of light polarizing film 1, fits with laminating niproll 21,22 clamping, makes layer
Stack 4.Then, the tri acetyl cellulose membrane as its second transparent resin film 3 of duplexer 4 is made
Side is wound up into the outer peripheral face of the chill roll 23 that surface temperature is set as 23 DEG C and makes it closely sealed, simultaneously
With linear velocity 20m/ minute, apply the tension force of 600N in the longitudinal direction and carry.
The conveying of limit and chill roll 23 closely sealed limit duplexer 4 chill roll 23 opposition side (as
The amorphous polyolefins resin molding side of the first transparent resin film 2), configure ultraviolet lamp 16 (strain
Formula commercial firm GS Yuasa system).Then, ultraviolet metal halide lamp 2 lamp having from it penetrated
Line, by irradiating duplexer 4 after wavelength filter 18, makes adhesive solidify.To shine from ultraviolet
Lamp in injection device 16 is set as 200mm to the beeline of duplexer 4.The wavelength wherein used
Wave filter 18 is obtained, between wavelength 250nm～400nm by Jing Bang Guang Mo Industrial Co., Ltd
The average transmittance of light be 88%, the average transmittance of the light between wavelength 400nm～500nm
It is 1%.
Using sending out of wavelength 250nm～500nm of the metal halide lamp used as ultraviolet light source
Light spectrum represents with bold curve A in fig. 2, and by the wavelength 250nm of wavelength filter 18～
The Optical transmission spectrum of 800nm represents with fine alcoholic fermented preparation line B in fig. 2.In Fig. 2, transverse axis is A, B
Sharing, represent wavelength (nm), the left longitudinal axis corresponding with curve A represents the luminescence of metal halide lamp
Intensity, the right longitudinal axis corresponding with curve B represents absorbance (%).Further, the luminous intensity of lamp is used
The relative value that the intensity given under the wavelength of maximum is calculated as 100 is represented.
When to make the power of ultraviolet lamp 16 be 120W, in the wavelength region of 200～400nm
Accumulated light be 510mJ/cm2, near the chill roll 23 of the duplexer 4 when having irradiated ultraviolet
Atmosphere temperature be 110 DEG C.After uv irradiation, then, conveying deflector roll 24 is passed sequentially through
With batch front nip rollers 25,26, light polarizing film 1 one side fit amorphous polyolefins resin molding 2,
At another side laminating tri acetyl cellulose membrane 3, obtain the polarization plates 5 of thick about 174 μm, batched
In goods roller 30.Making the light of the polarization plates reflector fluorescent light obtained, carry out visualization, result is glimmering
The picture of light modulation maps as former state, does not observe hot spot.
[embodiment 2]
In embodiment 1, replace making as " the ZEONOR FILM " of amorphous polyolefins resin molding
Biaxial stretch-formed poly-right with the conduct of thickness 38 μm obtained from Mitsubishi Plastics Inc, wide 1330mm
" the ダ イ ア ホ イ Le " of PET film, as the first transparent resin film 2, replaces three second
Acyl cellulose membrane " FUJITAC TD80 " and use in embodiment 1 and make as the first transparent resin film 2
" ZEONOR FILM " as amorphous polyolefins resin molding as the second transparent resin film 3,
Additionally, the power making ultraviolet lamp 16 is 140W, make the most similarly to Example 1
Make polarization plates.Now, the accumulation in the wavelength region of 200～400nm duplexer 4 irradiated
Light quantity is 630mJ/cm2, atmosphere near the chill roll 23 of the duplexer 4 when having irradiated ultraviolet
Temperature is 132 DEG C.Making the light of the polarization plates reflector fluorescent light obtained, carry out visualization, result is glimmering
The picture of light modulation maps as former state, does not observe hot spot.
[comparative example 1]
In the feelings not making the ultraviolet irradiated from ultraviolet lamp 16 pass through wavelength filter 18
Under condition, irradiate to duplexer 4, in addition, manufactured polarization plates similarly to Example 1.This
Time, the accumulated light in the wavelength region of the 200～400nm of duplexer 4 irradiation is
510mJ/cm2, the atmosphere temperature near the chill roll 23 of the duplexer 4 when having irradiated ultraviolet is
223℃.Making the light of the polarization plates reflector fluorescent light obtained, carry out visualization, result is at fluorescent lamp
As in observe multiple tiny white point, create hot spot.
[comparative example 2]
In the feelings not making the ultraviolet irradiated from ultraviolet lamp 16 pass through wavelength filter 18
Under condition, irradiate to duplexer 4, in addition, manufacture polarization plates similarly to Example 2.Now,
Accumulated light in the wavelength region of the 200～400nm of duplexer 4 irradiation is 630mJ/cm2,
Atmosphere temperature near the chill roll 23 of the duplexer 4 when having irradiated ultraviolet is 265 DEG C.Make
The light of the polarization plates reflector fluorescent light arrived, carries out visualization, and result is observed in the picture of fluorescent lamp
Multiple tiny white points, create hot spot.
Claims (4)
1. the method manufacturing polarization plates, it includes transparent by ultraviolet hardening adhesive
Resin molding fits in the light polarizing film formed by polyvinyl alcohol resin, makes described to its irradiation ultraviolet radiation
Adhesive solidifies,
The solidification of described adhesive is by irradiating the ultraviolet of substantially wavelength containing only below 400nm
And carry out,
The substantially ultraviolet of the wavelength containing only below 400nm, is to make to be sent by ultraviolet lamp
Light obtain by the wave filter of the light of the wavelength of more than 400nm can be blocked, by 400nm
The ultraviolet that the light of above wavelength substantially blocks,
The meansigma methods of the absorbance of the wavelength of described wave filter light between 250nm～400nm is
More than 80% and in the meansigma methods of absorbance of light of scope of wavelength 400nm to 500nm less than 5%.
The most the method for claim 1, wherein
Fit transparent resin film by described adhesive respectively on the two sides of light polarizing film, transparent from a side
Resin molding side carries out described ultraviolet irradiation.
3. method as claimed in claim 1 or 2, wherein,
Carry the light polarizing film of strip and the transparent resin film of strip the most continuously, by described glue
This transparent resin film is fitted in this light polarizing film by stick, the duplexer obtained is wound up into have defeated with it
Send the outer peripheral face of the chill roll of the orthogonal axle in direction and make it closely sealed, from this duplexer with described cooling
The side that roller is contrary carries out described ultraviolet irradiation.
4. method as claimed in claim 3, wherein,
Carry light polarizing film and the transparent resin film of 2 strips of strip the most continuously, by institute
State adhesive and respectively this transparent resin film is fitted in the two sides of this light polarizing film, the duplexer volume that will obtain
Around the outer peripheral face of described chill roll and make it closely sealed, contrary with described chill roll from this duplexer
The transparent resin film side of side carries out described ultraviolet irradiation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-071905 | 2011-03-29 | ||
| JP2011071905A JP2012208187A (en) | 2011-03-29 | 2011-03-29 | Method for manufacturing polarizing plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102736157A CN102736157A (en) | 2012-10-17 |
| CN102736157B true CN102736157B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210077791.9A Active CN102736157B (en) | 2011-03-29 | 2012-03-22 | The manufacture method of polarization plates |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2012208187A (en) |
| KR (3) | KR20120112073A (en) |
| CN (1) | CN102736157B (en) |
| TW (1) | TW201248218A (en) |
Families Citing this family (8)
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|---|---|---|---|---|
| WO2013051553A1 (en) * | 2011-10-07 | 2013-04-11 | 住友化学株式会社 | Method for manufacturing polarizer |
| JP6000103B2 (en) * | 2012-12-13 | 2016-09-28 | 日東電工株式会社 | Manufacturing method of polarizing plate |
| JP6154128B2 (en) * | 2012-12-20 | 2017-06-28 | 住友化学株式会社 | Manufacturing method of polarizing plate |
| JP2014153444A (en) * | 2013-02-06 | 2014-08-25 | Konica Minolta Inc | Retardation film, polarizing plate, and liquid crystal display |
| KR101584442B1 (en) * | 2013-06-12 | 2016-01-22 | 주식회사 엘지화학 | Method for polarizer comprising a step for adjusting color of polarizing element by uv irradiation |
| JPWO2016140182A1 (en) * | 2015-03-03 | 2017-12-14 | 住友化学株式会社 | Method for producing polarizing film with protective film |
| TWI708675B (en) * | 2017-08-16 | 2020-11-01 | 住華科技股份有限公司 | Manufacturing method of optical film |
| CN113853300A (en) * | 2019-06-27 | 2021-12-28 | 日东电工株式会社 | Method for producing laminated film |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003246970A (en) * | 2001-12-21 | 2003-09-05 | Sekisui Chem Co Ltd | Apparatus and method for producing structure adhered by photoreactive adhesive |
| JP2008273148A (en) * | 2007-05-07 | 2008-11-13 | Kyoritsu Kagaku Sangyo Kk | Manufacturing method for laminated film |
| CN102269838A (en) * | 2011-07-23 | 2011-12-07 | 明基材料有限公司 | Polaroid and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004026898A (en) * | 2002-06-21 | 2004-01-29 | Victor Co Of Japan Ltd | Ultraviolet irradiation apparatus and method for curing ultraviolet-curable adhesive |
| JP4306270B2 (en) * | 2003-02-12 | 2009-07-29 | 住友化学株式会社 | Polarizing plate, manufacturing method thereof, optical member, and liquid crystal display device |
| ES2301903T3 (en) * | 2004-07-05 | 2008-07-01 | Polylite Taiwan Co., Ltd. | METHOD OF FORMATION OF POLARIZED OR PHOTOCROMIC LENS FUSING POLYCARBONATE WITH OTHER PLASTIC MATERIALS. |
| JP5009690B2 (en) * | 2006-06-15 | 2012-08-22 | 日東電工株式会社 | Polarizing plate, image display device, and manufacturing method of polarizing plate |
| JP5046735B2 (en) * | 2007-05-07 | 2012-10-10 | 協立化学産業株式会社 | Film bonding apparatus and polarizing plate manufacturing apparatus |
| JP4861968B2 (en) * | 2007-11-30 | 2012-01-25 | 住友化学株式会社 | Manufacturing method of polarizing plate |
-
2011
- 2011-03-29 JP JP2011071905A patent/JP2012208187A/en active Pending
-
2012
- 2012-03-22 CN CN201210077791.9A patent/CN102736157B/en active Active
- 2012-03-26 KR KR1020120030320A patent/KR20120112073A/en active Application Filing
- 2012-03-27 TW TW101110644A patent/TW201248218A/en unknown
-
2018
- 2018-04-26 KR KR1020180048622A patent/KR20180048508A/en not_active Application Discontinuation
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2019
- 2019-03-21 KR KR1020190032222A patent/KR20190033505A/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003246970A (en) * | 2001-12-21 | 2003-09-05 | Sekisui Chem Co Ltd | Apparatus and method for producing structure adhered by photoreactive adhesive |
| JP2008273148A (en) * | 2007-05-07 | 2008-11-13 | Kyoritsu Kagaku Sangyo Kk | Manufacturing method for laminated film |
| CN102269838A (en) * | 2011-07-23 | 2011-12-07 | 明基材料有限公司 | Polaroid and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102736157A (en) | 2012-10-17 |
| KR20180048508A (en) | 2018-05-10 |
| TW201248218A (en) | 2012-12-01 |
| KR20120112073A (en) | 2012-10-11 |
| JP2012208187A (en) | 2012-10-25 |
| KR20190033505A (en) | 2019-03-29 |
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