CN107850718A - Manufacture method, light polarizing film and the Polarizer of light polarizing film - Google Patents
Manufacture method, light polarizing film and the Polarizer of light polarizing film Download PDFInfo
- Publication number
- CN107850718A CN107850718A CN201680041968.6A CN201680041968A CN107850718A CN 107850718 A CN107850718 A CN 107850718A CN 201680041968 A CN201680041968 A CN 201680041968A CN 107850718 A CN107850718 A CN 107850718A
- Authority
- CN
- China
- Prior art keywords
- light polarizing
- film
- polarizing film
- liquid
- manufacture method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 137
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 45
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 68
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 65
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000004043 dyeing Methods 0.000 claims abstract description 29
- 238000012546 transfer Methods 0.000 claims abstract description 22
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004327 boric acid Substances 0.000 claims abstract description 16
- 238000004132 cross linking Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims description 37
- 238000002347 injection Methods 0.000 claims description 37
- 239000007921 spray Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000003595 mist Substances 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000010408 film Substances 0.000 description 206
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 63
- 239000011347 resin Substances 0.000 description 28
- 229920005989 resin Polymers 0.000 description 28
- 239000007864 aqueous solution Substances 0.000 description 20
- 238000001035 drying Methods 0.000 description 12
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Substances [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 12
- 238000005266 casting Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 239000004973 liquid crystal related substance Substances 0.000 description 9
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 8
- 230000010287 polarization Effects 0.000 description 8
- 238000007127 saponification reaction Methods 0.000 description 8
- 238000005406 washing Methods 0.000 description 7
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 229910052740 iodine Inorganic materials 0.000 description 6
- 239000011630 iodine Substances 0.000 description 6
- 238000002834 transmittance Methods 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 238000010186 staining Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 150000000180 1,2-diols Chemical group 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 150000001639 boron compounds Chemical class 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- BJWMSGRKJIOCNR-UHFFFAOYSA-N 4-ethenyl-1,3-dioxolan-2-one Chemical compound C=CC1COC(=O)O1 BJWMSGRKJIOCNR-UHFFFAOYSA-N 0.000 description 1
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical class CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 239000004425 Makrolon Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229940081735 acetylcellulose Drugs 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000004423 acyloxy group Chemical group 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000006114 decarboxylation reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 150000002085 enols Chemical class 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- ICIWUVCWSCSTAQ-UHFFFAOYSA-M iodate Chemical compound [O-]I(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-M 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical group II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 238000005907 ketalization reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- JLKDVMWYMMLWTI-UHFFFAOYSA-M potassium iodate Chemical compound [K+].[O-]I(=O)=O JLKDVMWYMMLWTI-UHFFFAOYSA-M 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- B29C55/023—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
- B29C55/026—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets of preformed plates or sheets coated with a solution, a dispersion or a melt of thermoplastic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/0074—Production of other optical elements not provided for in B29D11/00009- B29D11/0073
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/02—Details
Abstract
It is an object of the present invention in whole manufacturing processes of light polarizing film, solves the problems, such as folding, fold, productivity ratio manufactures the uneven few light polarizing film of polarisation well.A kind of manufacture method of light polarizing film, it is characterised in that it has：1) by polyvinyl alcohol film from roller debatching and transfer in the horizontal direction process, 2) water-swellable process, 3) dyeing process, 4) stretching process and 5) boric acid cross-linking process step, it is foregoing 2)~4) in any one process before or after, liquid is sprayed to the width both ends of aforementioned film, so as to prevent the curling of the film.
Description
Technical field
The present invention relates to the manufacture method of the light polarizing film used in liquid crystal display device (hereinafter sometimes referred to simply as LCD) etc.,
Light polarizing film and Polarizer, more specifically, it is related to the polarisation that will be formed as the polyvinyl alcohol film of reel with iodine staining
The manufacture method of film, the light polarizing film manufactured by the autofrettage, the Polarizer using the light polarizing film.
Background technology
LCD is used for personal digital assistant, LCD TV, desktop computer, electronic watch, personal computer, word certainly
Metrical instrument class of processor, automobile, machinery etc. is moved, the LCD uses Polarizer.As Polarizer, it is generally used in by making iodine
Or one or two sides, the stacking triacetyl cellulose of the light polarizing film of the polyvinyl alcohol film formation of dichroic dye gas absorption quantity
The Polarizer formed Deng protective film, in order to LCD that is distinct, having high contrast is provided, it is necessary to have concurrently high transmitance and
The Polarizer of high degree of polarization.
Foregoing light polarizing film manufactures as follows：After polyvinyl alcohol film is swelled with water (including warm water), with iodine staining, it is
Iodine molecule is orientated and is stretched, be crosslinked to keep the state after stretching with crosslinking agents such as boric acid, and carry out
Dry, manufacture foregoing light polarizing film.In above-mentioned manufacturing process, from roller by polyvinyl alcohol film debatching, using coiling machine, nip rolls,
Continuously carried out while conveyance in the horizontal direction.
But it is water-swellable, dyeing, stretching, boric acid crosslinking, dry manufacturing process in, film water suction or dehydration and roll up
Song, folding, fold are produced in the width end of film, therefore asking for light polarizing film is manufactured well in the presence of productivity ratio is unable to
Topic.Particularly film it is thin in the case of, due to above-mentioned folding, fold, there is also the problem of film breaks, production disruption.And then
The bad problem of above-mentioned end also has influence on the inside of light polarizing film, and the polarizing properties that turning into makes light polarizing film overall are reduced or are difficult to
Polarizer is uniformly installed on to the irregular colour of liquid crystal cell or liquid crystal display image, leaks the reason for white etc..
In recent years, with LCD TV etc. picture maximization, it is necessary to compared with conventional product further wide width thin type
Light polarizing film, wherein, the folding of end, fold are the problem of must eliminating.
In order to reduce above-mentioned folding, fold, it is proposed that apply certain in the width of film using drying process
The gimmick of power (referring for example to patent document 1).In addition, it is proposed that for film on the move in water width both ends by
The gimmick of nozzle injection water (referring for example to patent document 2).
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2006-189560 publications
Patent document 2：Japanese Unexamined Patent Publication 7-247378 publications
The content of the invention
Problems to be solved by the invention
But using above-mentioned patent document 1 public technology when, although can avoid the folding in drying process process,
Fold, if but before drying process it is water-swellable, dyeing, stretching, boric acid crosslinking in any one process in, film produce folding
Repeatedly, fold, then the problem of can not transporting to drying process after all be present.
In addition, using above-mentioned patent document 2 public technology when, although the folding in water, fold can be avoided, not
Aerial caused folding, fold can be prevented.
Therefore, it is an object of the present invention in whole manufacturing processes of light polarizing film, folding, fold are solved the problems, such as, it is raw
Yield manufactures the uneven few light polarizing film of polarisation well.
The solution used to solve the problem
Therefore, the invention of in the following manner is provided in the present invention.
[manufacture method of light polarizing film]
A kind of manufacture method of light polarizing film, it is characterised in that it has：1) by polyvinyl alcohol film from roller debatching and
The process of horizontal direction transfer, 2) water-swellable process, 3) dyeing process, 4) stretching process and 5) boric acid cross-linking process step,
It is foregoing 2)~4) in any one process before or after, the width both ends of aforementioned film are sprayed
Liquid is penetrated, so as to prevent the curling of aforementioned film.
[light polarizing film]
A kind of light polarizing film, it is manufactured by the manufacture method of the light polarizing film of the present invention.
[Polarizer]
A kind of Polarizer, it is characterised in that it sets protective film to form at least one side of the light polarizing film of the present invention.
In the present invention, " width of film " is commonly referred to as being substantially orthogonal relative to the length direction of the film of banding
Direction.From roller debatching and the polyvinyl alcohol film that transfers in the horizontal direction, it is being particularly the transfer relative to film
The direction that direction is substantially orthogonal, typically, refer to the direction of the distance between two edges of film most in short-term.
In the present invention, the width of film is referred to as " TD directions ", and the transfer direction of film is referred to as " MD directions ".
It should be noted that also polyvinyl alcohol film is only called " film " below.
According to the manufacture method of the light polarizing film of the present invention, in 2) water-swellable process, 3) dyeing process and 4) in stretching process
Any one process before or after, the width both ends of polyvinyl alcohol film are sprayed with liquid, it is thin so as to prevent
The curling of film, therefore the whole face of film can be kept flat, folding, fold can be avoided.
The effect of invention
By the manufacture method of the present invention, wide cut, the slim light polarizing film of length can be manufactured well with productivity ratio, can be obtained
There is the light polarizing film of uniform degree of polarization to the central portion from light polarizing film untill end.And then it can easily manufacture width
The slim Polarizer of width, length, irregular colour, the leakage that can reduce liquid crystal display image are white.
Brief description of the drawings
Fig. 1 is to schematically show 1) reel debatching process, 2) water-swellable process, 3) liquid ejection portion in dyeing process
The figure of position.
Fig. 2 is to schematically show 2) water-swellable process and 3) liquid level of the water-swellable groove between dyeing process and roller a
The distance between distance A, roller a and roller b B figure.
Fig. 3 A are the figure of spray regime when representing to spray the surface of polyvinyl alcohol film (PVA film) liquid.
Fig. 3 B are the figure of spray regime when representing to spray the back side of polyvinyl alcohol film (PVA film) liquid.
When Fig. 4 sprays the surface of polyvinyl alcohol film or the back side liquid for expression, the face institute of injection direction and film
The figure of the angle, θ 1 of formation.
When Fig. 5 is represents to spray the surface of polyvinyl alcohol film or the back side liquid, injection direction upright projection is in poly-
The figure for the angle, θ 2 that the transfer direction in direction and polyvinyl alcohol film during the face of ethenol system film is formed.
When Fig. 6 sprays the surface of polyvinyl alcohol film or the back side liquid for expression, the face institute of injection direction and film
Direction and polyvinyl alcohol film of the angle, θ 1 and injection direction upright projection of formation when the face of polyvinyl alcohol film
The figure of angle, θ 2 that is formed of transfer direction.
Fig. 7 is the figure of one of spray regime when representing to spray polyvinyl alcohol film liquid.
Embodiment
It is described in detail below for the technical characteristic of the present invention, but they represent the one of preferred embodiment
Example, the present invention are not limited by these contents.
In the manufacture method of the light polarizing film of the present invention, by 1) by polyvinyl alcohol film from roller debatching and in the horizontal direction
The process of transfer, 2) water-swellable process, 3) dyeing process, 4) stretching process and 5) boric acid cross-linking process step manufacture light polarizing film.Need
Illustrate, 1) by polyvinyl alcohol film from roller debatching and process hereinafter also referred to 1) the reel debatching that transfers in the horizontal direction
Process.
The polyvinyl alcohol film used in above-mentioned 1) reel debatching process be by polyvinyl alcohol resin be made film-form,
Batch and form.
As the polyvinyl alcohol resin used in polyvinyl alcohol film, usually using unmodified polyethenol series tree
Fat, the resin i.e., by the saponifying polyvinyl acetate that vinyl acetate polyisocyanate polyaddition obtains manufactured.The polyethylene used in the present invention
In alcohol system film, this is not necessarily limited to, can also use and vinyl acetate (such as 10 moles of below %, preferably 5 rubs with a small amount of
Your below %) can be with polyvinyl alcohol resin obtained from the copolymer saponification of the composition of vinyl acetate copolymerization.As
It is able to can be included such as unsaturated carboxylic acid (such as including salt, ester, acid amides, nitrile), carbon with the composition of vinyl acetate copolymerization
The olefines (such as ethene, propylene, n-butene, isobutene etc.) of number 2~30, vinyl ethers, unsaturated sulfonic acid salt etc..Separately
Outside, modified polyvinylalcohol system resin obtained from the hydroxyl after saponification is chemically modified can also be used.
In addition, as polyvinyl alcohol resin, it can also use side chain that there is the polyethenol series tree of 1,2- diol structures
Fat.Above-mentioned side chain has the polyvinyl alcohol resin of 1,2- diol structures, such as by (i) by vinyl acetate and 3,4- diethyls
The method of the copolymer saponification of acyloxy -1- butylene, (ii) are by vinyl acetate and the copolymer soap of vinyl ethylene carbonate
Change and the method for decarboxylation, (iii) are by the copolymerization of vinyl acetate and 2,2- dialkyl group -4- vinyl -1,3- dioxolane
Thing saponification and de- ketalization method, (iv) obtain method of copolymer saponification of vinyl acetate and allylin etc.
Arrive.
The weight average molecular weight of polyvinyl alcohol resin is from the viewpoint of optical property, draftability, and preferably 100,000~30
Ten thousandth, further preferred 110,000~280,000, particularly preferred 120,000~260,000.
The mean saponification degree of polyvinyl alcohol resin is from the viewpoint of optical property, it is often preferred that 98 moles of % with
Upper, further preferred 99 moles of more than %, particularly preferred 99.5 moles of more than %, particularly preferred 99.8 moles of more than %.
As the polyvinyl alcohol resin used in the present invention, species can will be modified, amount, weight average molecular weight is modified, puts down
The different two or more polyvinyl alcohol resins such as equal saponification degree are applied in combination.
The polyvinyl alcohol film used in the present invention manufactures as follows：Poly- second is manufactured using above-mentioned polyvinyl alcohol resin
Enol system resin aqueous solution, the above-mentioned aqueous solution discharged and be cast in draw moulds such as casting drum, casting tape, casting resin films
Tool is filmed, and is batched after drying in roller, thus manufactures above-mentioned polyvinyl alcohol film.
In the polyvinyl alcohol resin aqueous solution, in addition to polyvinyl alcohol resin, also contain glycerine, two sweet as needed
The usually used plasticizer such as oil, triglycerin, ethylene glycol, triethylene glycol, polyethylene glycol, trimethylolpropane, nonionic, it is cloudy from
The surfactant of sub- property and/or cationic is preferred from the viewpoint of Film making properties.
The resin concentration of the polyvinyl alcohol resin aqueous solution is preferably 10~60 weight %, further preferred 15~55 weight
Measure %, particularly preferred 20~50 weight %.
The temperature of polyvinyl alcohol resin aqueous solution when being discharged to plastic casting mould is preferably 80~100 DEG C, particularly preferably
85~98 DEG C.In addition, the velocity of discharge for being discharged to the polyvinyl alcohol resin aqueous solution of plastic casting mould is preferably 0.1~5m/ points
Clock, further preferred 0.2~4m/ minutes, particularly preferred 0.3~3m/ minutes.
Casting drum etc. plastic casting mould surface temperature be preferably 40~99 DEG C, it is particularly preferred 60~95 DEG C.
Drying for the film using plastic casting mould film, by make film surface and the back side and more hot-rollings it is outer
All portions make it transport and carry out while alternately contact.After being dried using hot-rolling, it can be heat-treated for film.It is right
In heat treatment, carried out preferably at 60~150 DEG C, be particularly preferred 80~130 DEG C.
The both ends of film can also be cut by cutting before film roll is taken at into roller.
The thickness of above-mentioned polyvinyl alcohol film is from the viewpoint of the slimming of light polarizing film, preferably 5~60 μm, from entering
From the viewpoint of the slimming of one step, more preferably 5~30 μm, from the viewpoint of fracture is avoided, particularly preferably 10~
30μm。
In addition, the width of polyvinyl alcohol film is preferably more than 3m, from the viewpoint of large area, further preferably
For more than 4m, from the viewpoint of fracture is avoided, particularly preferably 4~6m.
In addition, the length of polyvinyl alcohol film is preferably more than 4km, from the viewpoint of large area further preferably
For more than 4.5km, particularly preferred more than 5km.
It should be noted that the upper limit of the length of film from the viewpoint of fracture is avoided, preferably below 50km, enters one
Walk preferred below 40km, particularly preferred below 30km.
In the manufacture method of the present invention, in above-mentioned 2) water-swellable process, 3) dyeing process and 4) any in stretching process
Before or after one process, liquid is sprayed at the width both ends of the film to being transported, so as to prevent the volume of film
It is bent.
Liquid can also be carried out after 5) the boric acid cross-linking process step after 4) stretching process, after 6) drying process hereafter
Body sprays, but in above-mentioned operation, film by being crosslinked, dry to form high rigidity, therefore be not likely to produce folding, fold, profit
The effect realized with injection is not notable.
For carry out liquid injection period, above-mentioned 2) water-swellable process, 3) dyeing process and 4) stretching process it
In, after water-swellable process, and/or 3) from the viewpoint of folding is avoided, preferably 2) after dyeing process, from avoiding fold
From the viewpoint of, more preferably 2) after water-swellable process, from the viewpoint of the planarization of light polarizing film, particularly preferably
2) within 10 seconds after water-swellable process.
The face of film for being sprayed is not particularly limited, and surface, the back side and two sides can be sprayed.It is logical
Often, the polyvinyl alcohol film for turning into reel is that the aqueous solution of polyvinyl alcohol resin is discharged and is cast in castings such as casting tapes
Mould is dried obtained to be film-made, continuously.In above-mentioned drying, the state on two sides mostly will not be identical, greatly
The moisture of more single-face sides is few or crystallinity is high.The few face of certain moisture is hygroscopic and extends, therefore in light polarizing film manufacture
2) water-swellable process, 3) in dyeing process, in opposite surface side, film easily crimps.Under the above situation, in the present invention, for
It is effective that both ends as the opposite surface side of curl direction, which carry out liquid injection,.
As the liquid of injection, can enumerate water outlet (including warm water), methanol, ethanol, isopropanol, acid/base water, dyeing liquor,
The liquid such as the aqueous solution of glycerine water solution, various chemicals.Among them, bad shadow never is caused to the performance of light polarizing film
From the viewpoint of sound, the preferably liquid such as water, dyeing liquor, from the viewpoint of slave unit simplicity, more preferably water.Use
In the case of water, water temperature is preferably 10~50 DEG C, particularly preferably 20~40 DEG C.
In addition, the liquid as injection, can use the liquid of vaporific state, never the performance of light polarizing film be caused bad
From the viewpoint of the viewpoint of influence, the simplicity of equipment, the water of preferably vaporific state.Also the liquid of vaporific state is only called below
" mist ".
Here, mist be typically make on artificial liquid formed it is vaporific form, refer to small drop.The particle diameter of mist is usual
For sub-micron~hundreds of microns.The particle diameter of the mist used in the present invention is preferably 1~500 μm, further preferred 2~100 μm, spy
Not preferably 3~50 μm.Exist if the particle diameter of mist is excessive and easily produce the uneven tendency of injection, injection pressure if too small be present
Control become difficult, floating and the tendency that is had undesirable effect for environment in addition.
The injection of mist can use commercially available mist dissemination apparatus to carry out.As above-mentioned mist dissemination apparatus, can include by with
Be pumped the liquid of contracting by nozzle spray a fluid application device, the air of the liquid of compression and compression collided and formed
The device of two fluid applications of atomizing, but in the present invention, the simplicity viewpoint of slave unit considers, a preferably fluid application
Device.Spray amount during injection from the viewpoint of jeting effect, preferably 0.01~1L/ minutes, particularly preferred 0.1~
0.5L/ minutes.
In addition, the ejection shape sprayed for mist by nozzle, can include point-like, wire, round shape, ellipticity etc., still
In the present invention, from the viewpoint of jeting effect, preferably round shape.It is not particularly limited for spraying angle, but from injection
From the viewpoint of effect, preferably 1~90 °.It should be noted that in the case of using the liquid beyond water, it is preferably anti-corrosion
The excellent plastics nozzle of property.
Hereinafter, as one of the preferred embodiment of the present invention, liquid injection will be carried out after 2) water-swellable process
Situation as an example, illustrates for the present invention.
Generally, 2) water-swellable process is from the viewpoint of the swellbility control of polyvinyl alcohol film, preferably 10~45
DEG C, it is particularly preferred 20~35 DEG C, preferably 0.1~10 minute, it is particularly preferred 0.5~5 minute under conditions of be impregnated in water to carry out.
It should be noted that the additives such as a small amount of iodinated compounds, surfactant, alcohol etc. can be added in water.
Such as shown in figure 1, by will be wound in the polyvinyl alcohol film of roller from roller debatching and transfer in the horizontal direction
1) reel debatching process, be put to water-swellable groove polyvinyl alcohol film pass through 2) water-swellable process, carry out polyethylene
Alcohol system film it is water-swellable.Then, transferred, by 3) to staining trough by roller from the polyvinyl alcohol film of water-swellable groove lifting
Dyeing process carries out the dyeing of polyvinyl alcohol film.
In the present invention, liquid injection to film both ends as described above, it is preferred to after 2) water-swellable process, until arriving
Carried out up between the process untill 3) dyeing process for film.Between above-mentioned operation, it is easiest to produce folding, fold, due to
Folding, fold, it can not be simply peeled away if pasting between film.In addition, folding, the feelings of fold are produced between above-mentioned operation
Under condition, 2) process and 3) is the initial process of light polarizing film manufacture, therefore is influenceed for caused by rear process very big.The tool of injection
The position of body is for example preferably when just being come out from the water-swellable groove of 2) water-swellable process and after initial roller a.Need
It is noted that the position and direction of injection are schematically shown using the arrow in Fig. 1.
In the present invention, as shown in Fig. 2 film from the water-swellable groove in 2) water-swellable process out up to initial roller a
Distance A untill contact is preferably below 1m, the distance B particularly preferably from initial roller a untill the roller b before staining trough
Also it is below 1m situation.The increased tendency of folding, fold if distance A is long be present.It should be noted that from water-swellable groove
The beeline from the liquid level of water-swellable groove until roller a untill is represented until the distance A untill roller a, from initial roller a up to contaminating
Distance B untill roller b before color groove represents the beeline between roller a and roller b.
In addition, the tension force between roller in series of processes is preferably 1~100N/m.Deposited if the overtension between roller
In the tendency being easily broken off, the increased tendency of folding, fold if too small on the contrary be present.
And then the transfer speed of the 3) film of dyeing process is reached from the viewpoint of productivity ratio from 2) water-swellable process,
Preferably 1m/ is more than minute, further preferred 1.5m/ more than minute, particularly preferred 2m/ are more than minute.
In the case of being sprayed using liquid, preferably using nozzle, to the one side at the width both ends of film or
Two sides sprays liquid.At this point it is possible to spray liquid as shown in Figure 3A, to the surface of film, can also as shown in Figure 3 B, to film
The back side spray liquid, liquid can also be sprayed to the two sides of film.As said nozzle, it is not particularly limited, can uses
Nozzle known to point jetting nozzle, line jetting nozzle, face jetting nozzle etc., but from the viewpoint of eject position control, it is excellent
Elect an ejection as.Said nozzle can set the nozzle of multiple identical types, can also combine a variety of nozzles.
The position of nozzle is as shown in Fig. 2 from the viewpoint of film folding is avoided, and preferably film is from 2) water-swellable process
In water-swellable groove out after, between untill the roller a with conveyance is contacted, from the viewpoint of film fold is avoided, enter
One step is the distance within 1m untill nozzle preferably from the outlet of water-swellable groove, from the viewpoint of film flatness,
It is the distance within 0.5m untill nozzle particularly preferably from the roller a of conveyance.It should be noted that from water-swellable groove
Export the distance until the distance untill nozzle and the roller a from conveyance untill nozzle and represent beeline respectively.
In addition, the distance between nozzle and pellicular front be from the viewpoint of film folding is avoided, preferably 1~100mm's
Distance, from the viewpoint of film fold is avoided, particularly preferably 2~50mm distance.It should be noted that nozzle and film
The distance between face represents beeline, specifically, represents between the nozzle and pellicular front in the direction of pellicular front
Distance.
In the present invention, from the viewpoint of curling prevents effect, flow velocity and the spray angle of injection are important.
The flow velocity of injection is preferably 0.01~5m/ seconds, further preferred 0.02~3m/ seconds, particularly preferred 0.03~2m/
Second.The tendency of effect reduction is prevented in the presence of curling if flow velocity is excessively slow, film be present if flow velocity is too fast easily produces bending
Tendency.
By the injection direction upright projection of liquid when the face of film, that is to say, that to be seen perpendicular to the direction of pellicular front
When examining pellicular front, the injection direction of liquid preferably not transfer direction (the MD side of the width (TD directions) with film, film
To) parallel.Therefore the angle of the injection of the preferred liquid angle, θ that not only face of the injection direction comprising liquid and film is formed
1, transfer direction (MD directions) institute shape in direction and film of the injection direction upright projection when face of film also comprising liquid
Into angle, θ 2 (4~Fig. 6 of reference picture).
It should be noted that in Fig. 6, the transfer direction of film is set to x-axis, the width of film is set to y-axis, perpendicular to
The direction of pellicular front is set to z-axis, pellicular front is set to xy faces, as perpendicular to the parallel with the width of film of the face of pellicular front
Face be set to yz faces, be set to xz faces as the face parallel with the transfer direction of film perpendicular to the face of pellicular front.
The angle, θ 1 that the injection direction of liquid and the face of film are formed be preferably 5~80 °, it is further preferred 10~70 °,
Particularly preferred 20~60 °.The tendency of effect reduction is prevented in the presence of curling if spray angle θ 1 is too low, film if too high be present
Easily produce the tendency of bending.
In addition, the transfer direction (MD directions) in direction and film of the injection direction upright projection of liquid when the face of film
The angle, θ 2 formed be preferably 5~175 °, it is further preferred 20~90 °, particularly preferred 30~60 °.If the mistakes of spray angle θ 2
It is low, the tendency of effect reduction is prevented in the presence of curling, the tendency that film produces fold if too high be present.
It should be noted that as shown in fig. 7, in the case of using multiple nozzles, the flow velocity and spray angle of above-mentioned injection,
Can whole nozzles it is identical, can also each nozzle it is different.The gimmick different as each nozzle, it can enumerate for example from the transfer of film
Side, injection flow velocity are set to and are slowly decreased or 1 slow landform of spray angle θ downstream towards for the upstream side in direction (MD directions)
Into gimmicks such as low angles.
During using above-mentioned gimmick, polyvinyl alcohol film be transferred in the state of no folding, fold it is following 3)
Dyeing process, 4) stretching process.
The light polarizing film of the present invention is after 1) reel debatching process, by 2) water-swellable process, 3) dyeing process, 4) stretching
The process such as process, 5) boric acid cross-linking process step, washing procedure as needed, drying process manufactures.Above-mentioned manufacturing process is not required
Will be with 2)~5) order carry out, can be with appropriately combined multiple processes.Such as it can also be carried out simultaneously 4) with 2) water-swellable process
Stretching process, 4) stretching process can also be carried out simultaneously with 3) dyeing process after 2) water-swellable process, can also be in 2) water
It is swelled process and 3) dyeing process carries out 4) stretching process simultaneously with 5) boric acid cross-linking process step afterwards, can also be in 2) water-swellable work
Sequence, 3) dyeing process, 4) stretching process 5) is carried out in any one in boric acid cross-linking process step.
Illustrated below for 2) water-swellable later process.
3) dyeing process is by making film be contacted with the liquid containing iodine or dichroic dye to carry out.Generally, use is iodo-
The aqueous solution of KI, the concentration of iodine is 0.1~2g/L, the concentration of KI is that 1~100g/L is appropriate.Dyeing time is
30~500 seconds or so are practical.The temperature of processing bath is preferably 5~50 DEG C.The aqueous solution can also contain in addition to aqueous solvent
There is a small amount of organic solvent with water with compatibility.As contact means, any hand such as dipping, coating, spraying can be applicable
Section.
4) stretching process is the process for stretching preferably 3~10 times in single shaft direction, particularly preferably stretches 3.5~6 times.This
When, if the dry tensile (degree or more for preventing width from shrinking can also be carried out in the direction that right angle is formed for draw direction
The stretching of big degree).Temperature during stretching is preferably selected within the temperature range of 30~170 DEG C.And then stretching ratio is finally set
In in aforementioned range, stretched operation can not only be implemented in a stage, and can be in any range of manufacturing process
Stage implements.
5) boric acid cross-linking process step is carried out using boron compounds such as boric acid, boraxs.Boron compound is with the aqueous solution or water-organic molten
The form of agent mixed liquor is used with 10~100g/L of concentration or so, and a small amount of KI coexists in a liquid, steady from polarizing properties
From the viewpoint of fixedization preferably.Temperature during preferred process is 30~70 DEG C or so, processing time is 0.1~20 minute or so.
It is then possible to carrying out washing treatment is implemented to aforementioned film.By carrying out washing treatment, it can remove and result from film surface
Precipitate.Carrying out washing treatment iodide aqueous solution such as by water, KI impregnates polyvinyl alcohol film to carry out.Use
Iodate potassium concn during potassium iodide aqueous solution is advisable for 1~80g/L or so.Temperature during carrying out washing treatment is usually 5~50 DEG C, excellent
Select 10~45 DEG C.Processing time is usually 1~300 second, preferably 10~240 seconds.It should be noted that water washing and utilizing iodate
The washing of aqueous solutions of potassium can be carried out with appropriately combined.In addition, then drying process can be implemented to aforementioned film.
Drying process is carried out 1~10 minute in an atmosphere, at 40~80 DEG C.
The degree of polarization of so obtained light polarizing film is preferably more than 99.8%, more preferably more than 99.9%.If polarisation is spent
It is low, the tendency for the contrast that cannot ensure in liquid crystal display be present.
Calculated it should be noted that degree of polarization is generally as follows：By 2 pieces of light polarizing films are formed with its differently- oriented directivity it is same
The mode in direction overlap in the state of, determine under wavelength X obtained light transmittance (H11), and by 2 pieces of light polarizing films with the side of orientation
Obtained light transmittance (H is determined in the state of being overlapped to the mode for forming mutually orthogonal direction, under wavelength X1), according to following formula
Calculate.
[(H11-H1)/(H11+H1)]1/2
And then the singleton transmittance of light polarizing film of the invention is preferably more than 42%.If above-mentioned singleton transmittance is too low
In the presence of the tendency for the high brightness that can not reach liquid crystal display.
Singleton transmittance is using value obtained from the light transmittance of spectrophotometric determination light polarizing film monomer.
The width of the light polarizing film of the present invention is preferably more than 1m, from the viewpoint of large area, preferably more than 1.3m,
From the viewpoint of further large area, more preferably more than 1.5m, from the viewpoint of fracture is avoided, particularly preferably
For 1.5~2.5m.
In addition, the thickness of the light polarizing film of the present invention is preferably less than 15 μm, from the viewpoint of further slimming, enter one
Step is preferably less than 10 μm, from the viewpoint of fracture is avoided, particularly preferably 2~9 μm, particularly preferred 3~8 μm.
So obtained light polarizing film of the invention is consequently adapted to manufacture high performance Polarizer because polarisation is uneven few.
Illustrated below for the method that Polarizer is manufactured by the light polarizing film of the present invention.
The light polarizing film of the present invention is bonded the resin film work of optical isotropy in its one or two sides via bonding agent
Polarizer is formed for protective film.As protective film, such as cellulosic triacetate, cellulose oxalic acid can be included
Ester, makrolon, polymethyl methacrylate, cyclic olefin polymer, cyclic olefine copolymer, polystyrene, polyether sulfone, poly- sub- virtue
The film or sheet material of base ester, poly- 4- methylpentenes, polyphenylene oxide etc..
Applying method gimmick known in is carried out, such as the adhesive composite of liquid is equably coated on into light polarizing film, protected
Protect film or both, then, both are bonded and crimped, heated, irradiate active energy beam, thus carried out
Fitting.
In addition, for light polarizing film, in order to realize filming, above-mentioned protective film can also be substituted, in its one or two sides
The curable resins such as polyurethane series resin, acrylic resin, carbamide resin are coated with, carry out being solidified to form Polarizer.
The light polarizing film that is obtained by the present invention, Polarizer, polarizing properties are excellent, are preferred for PDA, individual
People's computer, TV, projector, label, desk-top electronic calculator, electronic watch, word processor, Electronic Paper, game machine, record
It is the liquid crystal display device of camera, camera, photograph album, thermometer, sound equipment, automobile, mechanical metrical instrument etc., sunglasses, anti-
Dizzy glasses, anaglyph spectacles, wearable display, display element (CRT, LCD, organic EL, Electronic Paper etc.) are led to anti-reflection layer, light
Believe instrument, Medical Instruments, construction material, toy etc..
Embodiment
It is exemplified below out embodiment to be more particularly described for the present invention, as long as but the present invention is no more than its purport then
Do not limited by following embodiment.
<Condition determination>
Degree of polarization (%) is determined as described below for the light polarizing film obtained in embodiment and comparative example.
The central portion of the width of resulting light polarizing film and the degree of polarization at both ends (apart from each end 10cm position)
Shi Yong great mound electronics (strain) is made：RETS-1100A is determined.
<Embodiment 1>
(manufacture of polyvinyl alcohol film)
Add weight average molecular weight 142000,99.8 moles of % of saponification degree polyvinyl alcohol resin 1000kg, water 2500kg,
As the glycerine 100kg of plasticizer, 140 DEG C are warming up to while being stirred, concentration is adjusted to the weight % of resin concentration 25, obtains
The polyvinyl alcohol resin aqueous solution to uniform dissolution.
Then, the polyvinyl alcohol resin aqueous solution is supplied to the double screw extruder with steam vent and carries out deaeration
Afterwards, it is 95 DEG C to make aqueous temperature, is cast by T-shaped slit die outlet with velocity of discharge 0.6m/ minutes in 90 DEG C of surface temperature
Casting rouses, and is filmed.
Then, resulting film is dried using more hot-rollings, 3 points is carried out at 120 DEG C using showy formula drying machine
The heat treatment of clock, 4m width is cut into by cutting.Finally, batch in external diameter 17cm, internal diameter 16cm, length 4.4m aluminum
Core pipe, thus obtain polyvinyl alcohol film (width 4m, length 5km, 15 μm of the thickness) winding of the weight % of moisture content 2 banding
In the film roll that core pipe forms.
(manufacture of light polarizing film)
[1) reel debatching work while resulting polyvinyl alcohol film is transferred from roller debatching and in the horizontal direction
Sequence], the warm water for being impregnated in water-swellable groove is swelled, and to transferring direction stretching (1 minute, stretching ratio 1.7 at 25 DEG C
Times) [2) water-swellable process].
Film is lifted from water-swellable groove, between 2 rollers of horizontal arrangement (between the distance between roller 1m, roller
Tension force 20N/m), to transfer the both ends for the film that speed 2m/ minutes transport in the horizontal direction, by nozzle from upside injection water
(23 DEG C), prevent from crimping.The injection conditions of above-mentioned water is as described below.
Nozzle：MISUMI Corporation movable soft tubes
Nozzle location：1m is exported apart from water-swellable groove
Nozzle location (height)：Apart from film upper surface 5mm
Spray flow velocity：The 0.1m/ seconds
Spray angle θ 1：30°
Spray angle θ 2：45°
By it is resulting it is thin film dipped in comprising iodine 0.9g/L, KI 30g/L the aqueous solution in dyed while,
To transferring direction stretching (0.5 minute at 28 DEG C, 1.6 times of stretching ratio) [3) dyeing process].
Then be impregnated in boric acid 25g/L, KI 30g/L composition the aqueous solution, carry out boric acid crosslinking while, to turn
Send direction uniaxial tension (55 DEG C 1 minute, 2.0 times of stretching ratio) [5) boric acid cross-linking process step].
Then washed, be dried with potassium iodide aqueous solution, obtain the light polarizing film (width of total 5.4 times of stretching ratio
7 μm of 1.8m, thickness).Resulting light polarizing film does not have folding or fold, continues 12km length and does not produce fracture.Resulting
The polarized light property of light polarizing film is as shown in table 1.
(manufacture of Polarizer)
On the two sides of resulting light polarizing film, the three of 40 μm of bonding agent coating thickness are used as using the polyethenol series aqueous solution
Acetyl cellulose film (TAC film), it is dried to form Polarizer at 50 DEG C.Polarisation is not observed in resulting Polarizer
It is uneven.
<Embodiment 2~4>
In embodiment 1, injection conditions is set to the condition shown in table 1, in addition obtains polarisation similarly to Example 1
Film.Resulting light polarizing film does not have folding, fold, continues 12km length and does not produce fracture.For resulting light polarizing film, enter
The evaluation of row similarly to Example 1.Evaluation result is as shown in table 1.And then Polarizer is obtained similarly to Example 1.It is resulting
Polarizer be not observed polarisation inequality.
<Embodiment 5>
In embodiment 1, water is formed into vaporific state, in addition obtains light polarizing film similarly to Example 1.Above-mentioned mist
Injection conditions is as described below.
Nozzle：Spraying Systems Co. systems hit jet (HITJET) nozzle
Nozzle location：1m is exported apart from water-swellable groove
Nozzle location (height)：Apart from film upper surface 5mm
Spray flow velocity：The 0.1m/ seconds
Spray angle θ 1：30°
Spray angle θ 2：45°
Droplet footpath：20μm
Spray amount：0.2L/ minutes
For resulting light polarizing film, evaluation similarly to Example 1 is carried out.Evaluation result is as shown in table 1.And then with reality
Apply example 1 and similarly obtain Polarizer.Polarisation inequality is not observed in resulting Polarizer.
<Embodiment 6~8>
In embodiment 5, injection conditions is set to the condition shown in table 1, in addition obtains polarisation similarly to Example 5
Film.Resulting light polarizing film does not have folding, fold, continues 12km length and does not produce fracture.For resulting light polarizing film, enter
The evaluation of row similarly to Example 1.Evaluation result is as shown in table 1.And then Polarizer is obtained similarly to Example 1.It is resulting
Polarizer be not observed polarisation inequality.
<Comparative example 1>
In embodiment 1, without injection, the manufacture of light polarizing film is in addition started similarly to Example 1.But
After 2) water-swellable process, folding, fold are observed at the both ends of film, factory length 1km light polarizing film, is as a result being contaminated
Color groove produces fracture.The polarized light property of resulting part is as shown in table 1.It should be noted that due to producing fracture, therefore not
Polarizer can be manufactured.
[table 1]
As shown in table 1, according to the manufacture method of the light polarizing film of the present invention, the inclined of no folding, fold and length can be obtained
Light film.In addition, not only light polarizing film central portion and also at width both ends, degree of polarization is also high, thus can obtain from
The central portion of light polarizing film has the light polarizing film of uniform degree of polarization untill end.And then it can easily manufacture wide cut, length
Slim Polarizer, irregular colour, the leakage that can reduce liquid crystal display image be white.
Industrial applicability
The light polarizing film of the present invention is used for PDA, personal computer, TV, projector, label, electronic table
Calculator, electronic watch, word processor, Electronic Paper, game machine, video recorder, camera, photograph album, thermometer, sound equipment, automobile,
The liquid crystal display device of mechanical metrical instrument etc., sunglasses, anti-dazzle spectacles, anaglyph spectacles, wearable display, display member
Part (CRT, LCD, organic EL, Electronic Paper etc.) anti-reflection layer, optic communication instrument, Medical Instruments, construction material, toy etc..
Description of reference numerals
PVA film：Polyvinyl alcohol film
θ1(°)：The angle that the face of injection direction and film is formed
θ2(°)：Direction and polyvinyl alcohol film of the injection direction upright projection when face of polyvinyl alcohol film
Transfer the angle that direction is formed
Distance A：The liquid level of water-swellable groove and roller a distance
Distance B：The distance between roller a and roller b
Claims (15)
1. a kind of manufacture method of light polarizing film, it is characterised in that it has：1) by polyvinyl alcohol film from roller debatching and in water
Square to the process of transfer, 2) water-swellable process, 3) dyeing process, 4) stretching process and 5) boric acid cross-linking process step,
It is described 2)~4) in any one process before or after, liquid is sprayed to the width both ends of the film
Body, so as to prevent the curling of the film.
2. the manufacture method of light polarizing film according to claim 1, it is characterised in that being injected in for the liquid is 2) water-swellable
Carried out after process.
3. the manufacture method of light polarizing film according to claim 1 or 2, it is characterised in that the injection direction of the liquid with
The angle that the face of the film is formed is 5~80 °.
4. according to the manufacture method of light polarizing film according to any one of claims 1 to 3, it is characterised in that the spray of the liquid
Penetrate the angle that the transfers direction of direction of the direction upright projection when face of the film and the film is formed be 5~
175°。
5. according to the manufacture method of light polarizing film according to any one of claims 1 to 4, it is characterised in that the spray of the liquid
Penetrate and carried out with flow velocity 0.01~5m/ seconds.
6. according to the manufacture method of light polarizing film according to any one of claims 1 to 5, it is characterised in that the liquid is water
Or dyeing liquor.
7. according to the manufacture method of light polarizing film according to any one of claims 1 to 6, it is characterised in that the liquid is mist
The liquid of state.
8. the manufacture method of light polarizing film according to claim 7, it is characterised in that the liquid of the vaporific state for pass through by
The liquid of compression is formed by nozzle spray.
9. the manufacture method of the light polarizing film according to claim 7 or 8, it is characterised in that in the liquid of the vaporific state
The particle diameter of mist is 1~500 μm.
10. the manufacture method of the light polarizing film according to any one of claim 7~9, it is characterised in that the vaporific state
The flow of liquid is 0.01~1L/ minutes.
11. according to the manufacture method of light polarizing film according to any one of claims 1 to 10, it is characterised in that from the 2) water
The transfer speed for being swelled the film that process reaches the 3) dyeing process is 1m/ more than minute.
12. the manufacture method of the light polarizing film according to any one of claim 1~11, it is characterised in that the thickness of light polarizing film
Spend for less than 15 μm.
13. the manufacture method of the light polarizing film according to any one of claim 1~12, it is characterised in that the width of light polarizing film
Spend for more than 1m.
14. a kind of light polarizing film, it is manufactured by the manufacture method of the light polarizing film any one of claim 1~13.
15. a kind of Polarizer, it is characterised in that it sets protective film at least one side of the light polarizing film described in claim 14
Form.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-193775 | 2015-09-30 | ||
| JP2015193775 | 2015-09-30 | ||
| PCT/JP2016/068185 WO2017056579A1 (en) | 2015-09-30 | 2016-06-17 | Method for producing polarizing film, polarizing film, and polarizing plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107850718A true CN107850718A (en) | 2018-03-27 |
| CN107850718B CN107850718B (en) | 2021-01-12 |
Family
ID=58423375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680041968.6A Active CN107850718B (en) | 2015-09-30 | 2016-06-17 | Method for producing polarizing film, and polarizing plate |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6733542B2 (en) |
| KR (1) | KR102400122B1 (en) |
| CN (1) | CN107850718B (en) |
| TW (1) | TWI693248B (en) |
| WO (1) | WO2017056579A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424766A (en) * | 2007-10-31 | 2009-05-06 | 住友化学株式会社 | Method for preparing polaroid |
| JP2014146035A (en) * | 2014-02-27 | 2014-08-14 | Nitto Denko Corp | Method for manufacturing polarizer, polarizer, polarizing plate, optical film and image display device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3190200B2 (en) * | 1994-03-09 | 2001-07-23 | 日本合成化学工業株式会社 | Method and apparatus for widening water flow during running of vinyl alcohol polymer film in water |
| JP4184510B2 (en) * | 1998-11-10 | 2008-11-19 | 日東電工株式会社 | Manufacturing method of polarizing film |
| JP3429476B2 (en) * | 2000-05-09 | 2003-07-22 | 株式会社クラレ | Polyvinyl alcohol polymer film, its production method and polarizing film |
| JP4581690B2 (en) | 2005-01-05 | 2010-11-17 | 住友化学株式会社 | Manufacturing method of polarizing film |
| JP6228359B2 (en) * | 2011-12-06 | 2017-11-08 | 住友化学株式会社 | Manufacturing method of polarizing film |
| JP6462199B2 (en) * | 2012-12-04 | 2019-01-30 | 住友化学株式会社 | Manufacturing method of polarizing film and polarizing plate |
-
2016
- 2016-06-17 WO PCT/JP2016/068185 patent/WO2017056579A1/en active Application Filing
- 2016-06-17 JP JP2016541455A patent/JP6733542B2/en active Active
- 2016-06-17 CN CN201680041968.6A patent/CN107850718B/en active Active
- 2016-06-17 KR KR1020187012159A patent/KR102400122B1/en active IP Right Grant
- 2016-08-09 TW TW105125233A patent/TWI693248B/en active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424766A (en) * | 2007-10-31 | 2009-05-06 | 住友化学株式会社 | Method for preparing polaroid |
| JP2014146035A (en) * | 2014-02-27 | 2014-08-14 | Nitto Denko Corp | Method for manufacturing polarizer, polarizer, polarizing plate, optical film and image display device |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201726770A (en) | 2017-08-01 |
| WO2017056579A1 (en) | 2017-04-06 |
| TWI693248B (en) | 2020-05-11 |
| JPWO2017056579A1 (en) | 2018-07-19 |
| CN107850718B (en) | 2021-01-12 |
| KR20180063205A (en) | 2018-06-11 |
| JP6733542B2 (en) | 2020-08-05 |
| KR102400122B1 (en) | 2022-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102753276B (en) | Method for producing laminate film, method for producing polarizing laminate film, and method for producing polarizing plate | |
| TWI771278B (en) | Polyvinyl alcohol-based film and polarizing film using the same, polarizing plate, and manufacturing method of polyvinyl alcohol-based film | |
| TWI734782B (en) | Polyvinyl alcohol-based film and its manufacturing method and polarizing film using the polyvinyl alcohol-based film | |
| TWI721171B (en) | Polyvinyl alcohol-based film and polarizing film using the polyvinyl alcohol-based film | |
| JP4994145B2 (en) | Manufacturing method of polarizer, polarizer, polarizing plate, optical film, image display device and spraying device | |
| TWI789390B (en) | Polyvinyl alcohol-based film, polarizing film, polarizing plate, and method for producing polyvinyl alcohol-based film | |
| CN106104324B (en) | The manufacturing method of polarizer | |
| CN107107404B (en) | Polyvinyl alcohol film, method for producing polyvinyl alcohol film, polarizing film, and polarizing plate | |
| TWI798217B (en) | Polyvinyl alcohol-based film, polarizing film, polarizing plate, and method for producing polyvinyl alcohol-based film | |
| JP4971119B2 (en) | Manufacturing method of polarizer | |
| TWI689745B (en) | Method for manufacturing polarizing film | |
| CN107614578A (en) | The manufacture method and light polarizing film of polyvinyl alcohol film, polyvinyl alcohol film | |
| JP6740857B2 (en) | Method for producing polyvinyl alcohol film for producing polarizing film | |
| CN107850718A (en) | Manufacture method, light polarizing film and the Polarizer of light polarizing film | |
| CN110431456B (en) | Polyvinyl alcohol film, polarizing plate, and method for producing polyvinyl alcohol film | |
| KR102629982B1 (en) | Manufacture of polyvinyl alcohol-based film for manufacturing polarizing film and polarizing film using the same, polarizing plate, and polyvinyl alcohol-based film for manufacturing polarizing film | |
| JP6733543B2 (en) | Method for manufacturing polarizing film | |
| TWI716479B (en) | Polyvinyl alcohol-based film and manufacturing method of polarizing film, polarizing plate and polyvinyl alcohol-based film using the polyvinyl alcohol-based film | |
| TW201927887A (en) | Poly(vinyl alcohol)-based film for producing polarizing film, polarizing film obtained using same, and aqueous solution of poly(vinyl alcohol)-based resin | |
| CN110392852B (en) | Polyvinyl alcohol film, polarizing film and polarizing plate, and method for producing polyvinyl alcohol film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190516 Address after: Tokyo, Japan, Japan Applicant after: Mitsubishi Kasei Corporation Address before: Osaka Japan Applicant before: The Nippon Synthetic Chemical Industry Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |