CN102736135B - The manufacture method of blooming, polarization plates and image display device - Google Patents

The manufacture method of blooming, polarization plates and image display device Download PDF

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Publication number
CN102736135B
CN102736135B CN201210078024.XA CN201210078024A CN102736135B CN 102736135 B CN102736135 B CN 102736135B CN 201210078024 A CN201210078024 A CN 201210078024A CN 102736135 B CN102736135 B CN 102736135B
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methyl
base material
resin
coating layer
blooming
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CN102736135A (en
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神野亨
神崎昌
金玉馨
金云基
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Sumitomo Chemical Co Ltd
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Sumitomo Chemical Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/14—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of indefinite length
    • B29C39/18—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of indefinite length incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
    • 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
    • B29D11/00634—Production of filters
    • B29D11/00644—Production of filters polarizing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Health & Medical Sciences (AREA)
  • Polarising Elements (AREA)
  • Laminated Bodies (AREA)
  • Surface Treatment Of Optical Elements (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Liquid Crystal (AREA)

Abstract

The manufacture method of the blooming of the present invention includes: painting process, and it is coated with the coating fluid containing active energy ray-curable resin on base material film, forms coating layer；1st curing process, it is to the both ends area illumination active energy ray in the orthogonal direction of the conveying direction with base material film of coating layer；With the 2nd curing process, it is when the surface of coating layer is pressed against on the surface making casting mold, irradiates active energy ray from the lateral coating layer of base material film.In accordance with the invention it is possible to provide high-quality, zero defect and manufacture the manufacture method of blooming with high production rate.

Description

The manufacture method of blooming, polarization plates and image display device
Technical field
The present invention relates to the coating fluid that coating contains active energy ray-curable resin on base material film the manufacture method of the blooming making it solidify.Moreover, it relates to employ polarization plates and the image display device of this blooming.
Background technology
Base material film defines by being coated with the blooming of the resin bed of the optical function with regulation, as such as antiglare film, optical diffusion film, hard coat film etc., is being used in the various image display devices such as liquid crystal indicator.
Usually, the above-mentioned resin bed that blooming has passes through by the coating solution containing active energy ray-curable resin on base material film, the coating layer obtained is irradiated active energy ray and makes it be solidified to form.Optical characteristics required by blooming, in order to give required shape to painting layer surface, also can be pressed against painting layer surface by the casting mold with the surface configuration of regulation, make it solidify in this condition.
Such as, in JP2007-203678-A, disclose the concavo-convex roller that the plates being coated with radiation-curing resin liquid at base material film are wound up into rotation, the relief pattern on concavo-convex roller surface is needed on resin liquid layer, when plates are wound on concavo-convex roller, resin liquid layer is irradiated lonizing radiation, from the manufacture method of the embossed sheet that plates are peeled off by concavo-convex roller.
As mentioned above casting mold is being pressed against painting layer surface so that it is solidify and when manufacturing blooming, from casting mold peel off the blooming obtained time, the resin after sometimes solidifying can remain in mo(U)ld face " resin residue ".About resin residue, the base material film of strip is continuously formed in the producing continuously of blooming of resin bed, it is possible on the blooming obtained, produce continuous print defect (defect etc. of resin attachment on blooming surface, the surface configuration of blooming or optical characteristics).Additionally, when resin residue occurs, be removed cleaning and make manufacture efficiency be greatly lowered.
Additionally, for the coating layer solidifying to form on base material film, the adaptation solidifying resin and base material film in the region, both ends of width is low, therefore exists under a part of exfoliation solidifying resin of end regions, and have the problem polluting operation.If so operation polluted, then the quality of the blooming obtained declines, and makes productivity ratio significantly reduce.
JP2007-203678-A describes even surface is set by the both ends at casting mold, form the end solidifying resin with this even surface, thus fissility when improving from casting mold stripping blooming.According to the method, it is believed that for there is effect to a certain degree in the problem of " resin residue " of above-mentioned mo(U)ld face remaining, but for solidifying resin from the problem two end regions exfoliations of the coating layer after solidification, not sufficiently effective.
Additionally, according to the method recorded in JP2007-203678-A, owing to the both ends at casting mold arrange even surface, the width therefore forming required shape in solidifying the duplexer of resin and base material film becomes certain, and the width of the blooming of manufacture is limited to.Additionally, when wanting to change the width forming required form, there is new casting mold becomes problem required, cost rising.
The present invention is the invention completed in view of such practical situation, its object is to, offer is peeled off from the region, both ends of the coating layer after solidification by suppressing solidification resin such that it is able to the polarization plates of the manufacture method manufacturing to high-quality, zero defect and high production rate blooming and the blooming with employing the method manufacture and image display device.
The result of the present inventor's further investigation, it was found that as being used for preventing the means of the stripping of solidification resin, before the operation that casting mold limit makes coating layer solidify is pressed against on limit, it is extremely effective for making the resin being susceptible to the region of stripping solidify in advance.
Summary of the invention
That is, the present invention comprises following content.
[1] manufacture method of blooming, comprising: painting process, it is coated with the coating fluid containing active energy ray-curable resin on base material film, forms coating layer；1st curing process, it is to the both ends area illumination active energy ray in the orthogonal direction of the conveying direction with base material film of coating layer；With the 2nd curing process, it is when the surface of coating layer is pressed against on the surface making casting mold, irradiates active energy ray from the lateral coating layer of base material film.
[2] method as described in [1], wherein, region, described both ends is the region of the width apart from the both ends of described coating layer with regulation, and the width of this regulation is the scope of 100 μm～5cm.
[3] method as described in [1] or [2], wherein, the active energy ray irradiated in described 1st curing process is ultraviolet, and the accumulated light in described ultraviolet UVA is 10mJ/cm2Above 400mJ/cm2Below.
[4] method as described in [3], wherein, the accumulated light in described ultraviolet UVA is 30mJ/cm2Above 400mJ/cm2Below.
[5] method as according to any one of [1]～[4], wherein, the surface of described casting mold has fine concaveconvex shape, in the 2nd curing process, fine concaveconvex shape is transferred to painting layer surface.
[6] polarization plates, its have light polarizing film and by base material film side and this light polarizing film to in the way of the employing of stacking method as any one of [1]～[5] manufactures in this light polarizing film blooming.
[7] image display device, it has the polarization plates as described in [6] and image-displaying member, polarization plates is arranged on image-displaying member in the way of its light polarizing film becomes image-displaying member side.
The method according to the invention, it is possible to suppress to solidify resin and peel off from the region, both ends of the coating layer after solidification.Manufacture blooming with it is possible to high-quality, zero defect and high production rate.
Accompanying drawing explanation
Fig. 1 is the figure of the preferred example manufacturing device used in the manufacture method of the blooming showing schematically the present invention.
Fig. 2 is the sectional view showing schematically the 1st curing process.
Fig. 3 indicates that the figure of the pattern of the surface configuration formation of the casting mold for embodiment 1.
In figure: 10-roller, 11-base material film, 12-coating layer, 13-applying area, 15-dry section, 20,21-active-energy beam irradiating apparatus, 22-casting mold, 23,24-niproll, 30-film devices for taking-up, region, A-both ends.
Detailed description of the invention
<manufacture method of blooming>
The manufacture method of the blooming of the present invention includes following operation:
[1] painting process, it is coated with the coating fluid containing active energy ray-curable resin on base material film, forms coating layer；
[2] the 1st curing process, it is to the both ends area illumination active energy ray in the orthogonal direction of the conveying direction with base material film of coating layer；With
[3] the 2nd curing process, it is when the surface of coating layer is pressed against on the surface making casting mold, irradiates active energy ray from the lateral coating layer of base material film.
Referring to accompanying drawing, each operation is described in detail.Fig. 1 is the figure of the preferred example manufacturing device used in the manufacture method of the blooming showing schematically the present invention.Arrow in Fig. 1 represents the conveying direction of film or the direction of rotation of roller.Additionally, Fig. 2 is the sectional view showing schematically the 1st curing process.
[1] painting process
In this operation, the coating coating fluid containing active energy ray-curable resin on base material film, form coating layer.About painting process, for instance as shown in fig. 1, for the base material film 11 drawn from outlet roller 10, contain the coating fluid of ultra-violet solidified resin composition in applying area 13 coating.
About coating fluid coating on base material film 11, such as gravure coating process, micro-gravure coating process, stick coating method, scraper plate rubbing method, air knife coating method, (kisscoating) method of painting of coincideing, mold pressing rubbing method etc. can be adopted to carry out.
(base material film)
As long as the film of base material film 11 light transmission, it is possible to use such as glass, plastic foil etc..As plastic foil, as long as having the transparency of appropriateness, mechanical strength.Specifically can enumerate the polyolefin-based resins etc. such as polyester based resin, polyethylene, polypropylene such as acetate fiber prime system resin, acrylic resin, polycarbonate-based resin, polyethylene terephthalate such as such as TAC (triacetyl cellulose).Thickness about base material film 11, for instance be 10～500 μm, from the view point of the filming etc. of blooming, it is preferred to 10～300 μm, more preferably 20～300 μm.
With the coating of coating fluid improve or with the cementability of coating layer be improved as purpose, various surface treatment can be implemented in the surface (coating layer side surface) of base material film 11.As surface treatment, Corona discharge Treatment, glow discharge process, acid surfaces process, alkali surface treatment, ultraviolet radiation process etc. can be enumerated.Additionally, other layers such as such as prime coat, applied coating solution on these other layers can be formed on base material film 11.
Additionally, when by bonding with light polarizing film described later for blooming and when using, in order to improve the cementability of base material film and light polarizing film, it is preferable that made surface (surface of the opposition side of the coating layer) hydrophiling of base material film by various surface treatments.This surface treatment can carry out after the manufacture of blooming.
(coating fluid)
Coating fluid contains active energy ray-curable resin, generally also comprises Photoepolymerizationinitiater initiater (radical polymerization initiator).As required, other compositions such as light transmission microgranule, organic solvent equal solvent, levelling agent, dispersant, antistatic additive, anti-fouling agent, surfactant can be comprised.
(1) active energy ray-curable resin
Active energy ray-curable resin can be uv curing resin, electronic beam curing resin etc., it may be preferable to uses the active energy ray-curable resin such as containing multifunctional (methyl) acrylate compounds.So-called multifunctional (methyl) acrylate compounds, is the compound in molecule with at least 2 (methyl) acryloxies.As the concrete example of multifunctional (methyl) acrylate compounds, such as polyhydric alcohol and the multifunctional polymerizable compound etc. containing more than 2 (methyl) acryloyl groups such as (methyl) acrylic acid ester compounds, carbamate (methyl) acrylate compounds, polyester (methyl) acrylate compounds, epoxy (methyl) acrylate compounds can be enumerated.
As polyhydric alcohol, such as ethylene glycol, diethylene glycol, 2,2'-ethylenedioxybis(ethanol)., tetraethylene glycol (TEG), Polyethylene Glycol, propylene glycol, dipropylene glycol, tripropylene glycol, three contracting four propylene glycol, polypropylene glycol, propylene glycol, butanediol, pentanediol, hexanediol, neopentyl glycol, 2-ethyls-1 can be enumerated, 3-hexanediol, 2,2 yuan of alcohol such as 2 '-sulfur di-ethanol, 1,4-CHDM；The alcohol of trimethylolpropane, glycerol, tetramethylolmethane, two glycerol, dipentaerythritol, contracting two (trimethylolpropanes) etc. more than 3 yuan.
nullAs polyhydric alcohol and (methyl) acrylic acid carboxylate，Specifically can enumerate ethylene glycol bisthioglycolate (methyl) acrylate、Diethylene glycol two (methyl) acrylate、1，6-hexanediol two (methyl) acrylate、Neopentyl glycol two (methyl) acrylate、Trimethylolpropane tris (methyl) acrylate、Trimethylolethane trimethacrylate (methyl) acrylate、Tetramethylol methane three (methyl) acrylate、1，6-hexanediol two (methyl) acrylate、Tetramethylol methane four (methyl) acrylate、Five glycerol three (methyl) acrylate、Tetramethylolmethane three (methyl) acrylate、Tetramethylolmethane four (methyl) acrylate、Glycerol three (methyl) acrylate、Dipentaerythritol three (methyl) acrylate、Dipentaerythritol four (methyl) acrylate、Dipentaerythritol five (methyl) acrylate、Dipentaerythritol six (methyl) acrylate etc..
As carbamate (methyl) acrylate compounds, the isocyanates in 1 molecule with multiple NCO can be enumerated and the urethane reactant of (methyl) acrylic acid derivative with hydroxyl.As the organic isocyanate in 1 molecule with multiple NCO, the organic isocyanate in 1 molecules such as hexamethylene diisocyanate, isophorone diisocyanate, toluene di-isocyanate(TDI), naphthalene diisocyanate, methyl diphenylene diisocyanate, XDI, dicyclohexyl methyl hydride diisocyanate with 2 NCOs can be enumerated, these organic isocyanates have been carried out the organic isocyanate etc. in isocyanurate-modified, addition modification, biuret modified 1 molecule obtained with 3 NCOs.As (methyl) acrylic acid derivative with hydroxyl, (methyl) acrylic acid 2-hydroxy methacrylate, (methyl) acrylic acid 2-hydroxy propyl ester, (methyl) acrylic acid 4-hydroxybutyl, (methyl) acrylic acid 2-hydroxybutyl, (methyl) acrylic acid 2-hydroxyl-3-phenoxy-propyl, pentaerythritol triacrylate etc. can be enumerated.
As polyester (methyl) acrylate compounds, it is preferred to make polyester (methyl) acrylate that the polyester containing hydroxyl reacts with (methyl) acrylic acid and obtains.Be preferably used containing the polyester of hydroxyl, be by polynary alcohol and carboxylic acid, there is the compound of multiple carboxyl and/or the esterification of its anhydride and the polyester containing hydroxyl that obtains.As polyhydric alcohol, the compound same with aforesaid compound can be illustrated.Additionally, except polyhydric alcohol, as phenols, bisphenol-A etc. can be enumerated.As carboxylic acid, formic acid, acetic acid, butyl carboxylic acid, benzoic acid etc. can be enumerated.As compound and/or its anhydride with multiple carboxyl, maleic acid, phthalic acid, fumaric acid, itaconic acid, adipic acid, p-phthalic acid, maleic anhydride, phthalic anhydride, trimellitic acid, cyclohexane cyclohexanedimethanodibasic acid anhydride etc. can be enumerated.
In above multifunctional (methyl) acrylate compounds, the aspect of the easiness improve from the intensity of solidfied material, obtained, it is preferable that the ester compounds such as hexanediol two (methyl) acrylate, neopentyl glycol two (methyl) acrylate, diethylene glycol two (methyl) acrylate, tripropylene glycol two (methyl) acrylate, trimethylolpropane tris (methyl) acrylate, tetramethylolmethane three (methyl) acrylate, dipentaerythritol six (methyl) acrylate；The addition product of hexamethylene diisocyanate and (methyl) acrylic acid 2-hydroxy methacrylate；The addition product of isophorone diisocyanate and (methyl) acrylic acid 2-hydroxy methacrylate；The addition product of toluene di-isocyanate(TDI) and (methyl) acrylic acid 2-hydroxy methacrylate；The addition product of addition modification isophorone diisocyanate and (methyl) acrylic acid 2-hydroxy methacrylate；And the addition product of biuret modified isophorone diisocyanate and (methyl) acrylic acid 2-hydroxy methacrylate.Additionally, about these multifunctional (methyl) acrylate compounds, it is possible to each use individually or use with other a kind of combination of the above.
About active energy ray-curable resin, except above-mentioned multifunctional (methyl) acrylate compounds, simple function (methyl) acrylate compounds can be contained.nullAs simple function (methyl) acrylate compounds，Such as (methyl) acrylic acid methyl ester. can be enumerated、(methyl) ethyl acrylate、(methyl) butyl acrylate、(methyl) Isobutyl 2-propenoate、(methyl) tert-butyl acrylate、(methyl) acrylic acid 2-hydroxy methacrylate、(methyl) acrylic acid 2-hydroxy propyl ester、(methyl) hydroxy butyl acrylate、(methyl) acrylic acid 2-hydroxybutyl、(methyl) acrylic acid 2-hydroxyl-3-phenoxy-propyl、(methyl) glycidyl acrylate、Acryloyl morpholine、NVP、(methyl) tetrahydrofurfuryl acrylate、(methyl) cyclohexyl acrylate、(methyl) 2-EHA、(methyl) isobornyl acrylate、Acetyl group (methyl) acrylate、(methyl) benzyl acrylate、(methyl) acrylic acid 2-ethoxy ethyl ester、(methyl) acrylic acid 3-methoxybutyl、Ethyl carbitol (methyl) acrylate、Phenoxy group (methyl) acrylate、Ethylene-oxide-modified phenoxy group (methyl) acrylate、Expoxy propane (methyl) acrylate、Nonyl phenol (methyl) acrylate、Ethylene-oxide-modified (methyl) acrylate、Epoxy pronane modification nonyl phenol (methyl) acrylate、Methoxyl group diethylene glycol (methyl) acrylate、2-(methyl) acryloyl-oxyethyl-2-hydroxypropyl phthalate、(methyl) acrylate、(methyl) esters of acrylic acids such as methoxy triglycol (methyl) acrylate.About these compounds, it is possible to be each used alone or use with other a kind of combination of the above.
Additionally, active energy ray-curable resin can contain polyreactive oligomers.By containing polyreactive oligomers, it is possible to regulate the hardness of solidfied material.Polyreactive oligomers can be the oligomer such as 2 aggressiveness of such as above-mentioned multifunctional (methyl) acrylate compounds, i.e. polyhydric alcohol and (methyl) acrylic acid ester compounds, carbamate (methyl) acrylate compounds, polyester (methyl) acrylate compounds or epoxy (methyl) acrylate etc., 3 aggressiveness.
As other polyreactive oligomers, carbamate (methyl) acrylate oligomer being obtained by reacting by the polyisocyanates in molecule with at least 2 NCOs with the polyhydric alcohol with at least 1 (methyl) acryloxy can be enumerated.As polyisocyanates, hexamethylene diisocyanate can be enumerated, isophorone diisocyanate, toluene di-isocyanate(TDI), methyl diphenylene diisocyanate, the polymer etc. of XDI, as the polyhydric alcohol with at least 1 (methyl) acryloxy, it it is (methyl) acrylate containing hydroxyl obtained by polyhydric alcohol and (methyl) acrylic acid esterification, such as 1 can be enumerated, 3-butanediol, 1, 4-butanediol, 1, 6-hexanediol, diethylene glycol, 2,2'-ethylenedioxybis(ethanol)., neopentyl glycol, Polyethylene Glycol, polypropylene glycol, trimethylolpropane, glycerol, tetramethylolmethane, the product that at least 1 hydroxyl of the polyhydric alcohol such as dipentaerythritol is substituted by (methyl) acryloxy.Having the polyhydric alcohol of at least 1 (methyl) acryloxy for this, while a part for the alcohol hydroxyl group of polyhydric alcohol and (methyl) acrylic acid carry out esterification, alcohol hydroxyl group is remaining in the molecule.
In addition, as the example of other polyreactive oligomers, the compound by having multiple carboxyl and/or its anhydride can be enumerated and polyester (methyl) acrylate oligomer being obtained by reacting of the polyhydric alcohol with at least 1 (methyl) acryloxy.As compound and/or its anhydride with multiple carboxyl, the material that the material recorded in polyester (methyl) acrylate of multifunctional with above-mentioned (methyl) acrylate compounds is same can be illustrated.Additionally, as the polyhydric alcohol with at least 1 (methyl) acryloxy, the material same with the material recorded in above-mentioned carbamate (methyl) acrylate oligomer can be illustrated.
Except above polyreactive oligomers, in addition, example as carbamate (methyl) acrylate oligomer, it is possible to enumerate the compound making the hydroxyl of isocyanates and the polyester containing hydroxyl, the polyethers containing hydroxyl or (methyl) acrylate containing hydroxyl react and to obtain.About be preferably used containing the polyester of hydroxyl, be by polyhydric alcohol and carboxylic acid, there is the compound of multiple carboxyl and/or the esterification of its anhydride and the polyester containing hydroxyl that obtains.As polyhydric alcohol, the compound with multiple carboxyl and/or its anhydride, the material same with the material recorded in polyester (methyl) acrylate compounds of multifunctional (methyl) acrylate compounds can be illustrated respectively.About be preferably used containing the polyethers of hydroxyl, be the polyethers containing hydroxyl obtained by making one kind or two or more oxyalkylene and/or 6-caprolactone and polyhydric alcohol addition.Polyhydric alcohol can be the polyhydric alcohol same with the polyol phase that can use in the above-mentioned polyester containing hydroxyl.As (methyl) acrylate containing hydroxyl being preferably used, the material that the material recorded in carbamate (methyl) acrylate oligomer with polyreactive oligomers is same can be illustrated.As isocyanates, it is preferable that molecule has the compound of the NCO of more than 1, it is particularly preferred to 2 yuan of isocyanate compounds such as toluene di-isocyanate(TDI), hexamethylene diisocyanate, isophorone diisocyanate.
These polyreactive oligomers compounds can each use individually, or uses with other a kind of combination of the above.
(2) Photoepolymerizationinitiater initiater
As Photoepolymerizationinitiater initiater, such as 1-Phenylethanone. system Photoepolymerizationinitiater initiater, benzoin system Photoepolymerizationinitiater initiater, benzophenone series Photoepolymerizationinitiater initiater, thiaxanthone system Photoepolymerizationinitiater initiater, triazine system Photoepolymerizationinitiater initiater, diazole system Photoepolymerizationinitiater initiater etc. can be used.In addition; as Photoepolymerizationinitiater initiater; also be able to use such as TMDPO, 2; 2 '-bis-(o-chlorphenyls)-4; 4 ', 5,5 '-tetraphenyl-1; 2 '-bisglyoxaline, 10-butyl-2-chloro-acridine ketone, 2-ethyl-anthraquinone, benzil, 9,10-phenanthrenequione, camphorquinone, phenylglyoxalates methyl ester, titanocenes compound etc..Make consumption about Photoepolymerizationinitiater initiater, relative to active energy ray-curable resin 100 weight portion, be generally 0.5～20 weight portion, it is preferred to 1～5 weight portion.
(3) light transmission microgranule
As light transmission microgranule, it is not particularly limited, the organic fine particles that such as acrylic resin, melamine resin, polyethylene, polystyrene, organic silicone resin, acrylic acid series-styrol copolymer etc. are formed can be used, the inorganic particles etc. that calcium carbonate, silicon dioxide, aluminium oxide, brium carbonate, barium sulfate, titanium oxide, glass etc. are formed.It is further possible to use the hollow ball of organic polymer, hollow pearl.These light transmission microgranules can be used alone a kind, it is possible to two or more mixing is used.The shape of light transmission microgranule can be any shapes spherical, flat, tabular, needle-like, indefinite shape etc..
To the particle diameter of light transmission microgranule, refractive index, there is no particular restriction, but when blooming is optical diffusion film, antiglare film, from the aspect effectively making internal haze manifest, it is preferable that weight average particle diameter is the scope of 0.5 μm～20 μm.Additionally, for the same reason, it is preferable that the refractive index of the active energy ray-curable resin after solidification and the scope that specific refractivity is 0.02～0.15 of light transmission microgranule.About the content of light transmission microgranule, relative to active energy ray-curable resin 100 weight portion, it is generally 3～60 weight portions, it is preferred to 5～50 weight portions.About the content of light transmission microgranule, when being less than 3 weight portion relative to active energy ray-curable resin 100 weight portion, when giving light diffusing or anti-glare at needs, sometimes cannot realize its purpose fully.On the other hand, if it exceeds 60 weight portions, the transparency of blooming is impaired sometimes, additionally, anti-glare, light diffusing excessively raise, contrast is tended to reduce.
Further, when using light transmission microgranule, in order to the optical characteristics and surface configuration making blooming becomes homogenizing, it is preferable that the isotropism that is separated into of the light transmission microgranule in coating fluid is disperseed.
Coating fluid can containing organic solvent equal solvent.As organic solvent, it may be considered that viscosity etc. are from aliphatic hydrocarbons such as hexane, hexamethylene, octanes；The aromatic hydrocarbon such as toluene, dimethylbenzene；The alcohols such as ethanol, 1-propanol, isopropanol, n-butyl alcohol, Hexalin；The ketones such as butanone, methyl iso-butyl ketone (MIBK), Ketohexamethylene；The esters such as ethyl acetate, butyl acetate, isobutyl acetate；The glycol ethers such as glycol monoethyl ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, propylene glycol monomethyl ether, dihydroxypropane single-ether；The esterification glycol ethers such as ethylene glycol monomethyl ether acetate, propylene glycol methyl ether acetate；The cellosolve classes such as 2-methyl cellosolve, cellosolvo, butoxy ethanol；The carbitol classes such as 2-(2-methoxy ethoxy) ethanol, 2-(2-ethoxy ethoxy) ethanol, 2-(2-Butoxyethoxy) ethanol etc. select use.These solvents can be used alone, and can multiple mixing be used as required.It is necessary after coating to make above-mentioned organic solvent evaporation.Therefore, boiling point is preferably the scope of 60 DEG C～160 DEG C.Additionally, the saturated vapour pressure at 20 DEG C is preferably the scope of 0.1kPa～20kPa.
In the solvent-laden situation of coating fluid, after above-mentioned painting process, before the 1st curing process, it is preferable that arrange and make solvent evaporate the drying process being dried.About dry, for instance can as shown in Figure 1 example like that, by make the base material film 11 with coating layer in dry section 15 by and carry out.Baking temperature suitably can select according to the kind of the solvent used, base material film.It is generally the scope of 20 DEG C～120 DEG C, but is not limited to this.Additionally, when drying oven has multiple, it is possible to each drying oven is changed temperature.
The thickness of dried coating layer is preferably 1～30 μm.The problem being to produce in various coating fluid peeled off by resin in the region, both ends of coating layer, is typically in when Thickness ratio 3 μ m-thick of dried coating layer notable, and the inhibition that the resin that therefore under this situation, the present invention produces is peeled off is more effective.
[2] the 1st curing process
This operation is before the 2nd curing process making coating layer solidify when being pressed against by mo(U)ld face, to the both ends area illumination active energy ray in the orthogonal direction of the conveying direction with base material film of coating layer, makes the operation that these both ends are regions curing in advance.The region, both ends in the direction that the conveying direction with base material film of coating layer is orthogonal, is with the arrow A region represented in Fig. 2, is comprise end and distance end has the region of width of regulation.The region, both ends of coating layer is part low with the adaptation of base material film, that concentration peeled off by resin.To before being pressed against casting mold, making this partially cured in advance such that it is able to be effectively prevented the resin from the coating layer after solidifying and peel off.It is further possible to be effectively prevented the resin residue at casting mold.The suppression peeled off about resin, the suppression of resin residue on casting mold, produce in defect extremely beneficial at the blooming obtained preventing.That is, when being continuously formed resin bed on the base material film of strip and manufacture blooming, if way occurs resin to peel off in the mill, this resin is mixed in manufacturing process, produces defect at the blooming obtained.If additionally, just there is resin residue from manufacturing the incipient stage, the blooming entirety that the base material film utilizing this strip is manufactured by this resin residue produces harmful effect.Additionally, due to these resins are peeled off, resin residue, sometimes make equipment stop and needing cleaning work, cause the decline manufacturing efficiency.
Region, both ends is the region A that distance end has the width of regulation.The width of regulation is preferably the region of the scope of 100 μm～5cm.The region solidified by the 1st curing process is difficult to the shape transfer of casting mold in the 2nd curing process, therefore the probability in invalid region is become as goods high, from this viewpoint, within the width in region, both ends being undertaken solidifying by the 1st curing process is preferably 5cm.On the other hand, if carried out the short of width 100 μm in the region, both ends solidified by the 1st curing process, then the effect preventing resin from peeling off fully cannot sometimes be obtained.About being susceptible to the region that resin is peeled off, because of the resin of coating layer form, the overall with of the thickness of coating layer, manufacturing condition, base material film etc. and different, for instance be sometimes prone to distance end wide 100 μm～scope of 700 μm in generation.As the method for width regulating region, both ends, it is possible to be used in lamp arranging the method for slit, in the way of becoming the width of regulation by arbitrary methods such as the methods of the in addition distribution such as optical fiber.Additionally, for the purpose of the Illumination Distribution in irradiating width, range of exposures being adjusted etc., lens can be arranged in the front end of slit, optical fiber.The overall with of base material film is such as 1300mm～2600mm.
Irradiation to the active energy ray in the region, both ends of coating layer, can refer to Fig. 1 and Fig. 2, such as, by the base material film 11 with coating layer 12 for having passed through applying area 13 (when being dried for dry section 15), it is used in the ultraviolet lamp isoreactivity energy ray radiator 20 being respectively provided with near the both ends of coating layer 12 side, irradiates active energy ray and carry out.As long as region, the both ends A of coating layer 12 can be irradiated active energy ray by active-energy beam irradiating apparatus 20, may be provided at base material film 11 side.
The active-energy beam irradiating apparatus that can use in the first curing process, in order to prevent from making due to crawling of base material film range of exposures to deviate from end regions, it is preferable that have the anti-locking mechanism or revise the mechanism etc. of position of irradiation unit according to crawling of base material film of crawling of base material film.
As active energy ray, can according to the kind of active energy ray-curable resin contained in coating fluid, suitably select from ultraviolet, electron beam, nearultraviolet rays, visible ray, near infrared ray, infrared ray, X ray etc., preferred ultraviolet and electron beam in these, owing to processing simplicity, high-energy can be obtained, therefore particularly preferably ultraviolet.
As ultraviolet light source, it is possible to use such as low pressure mercury lamp, medium pressure mercury lamp, high voltage mercury lamp, ultrahigh pressure mercury lamp, carbon arc lamp, electrodeless lamp, metal halide lamp, xenon arc lamp etc..It is further possible to use ArF excimer laser, KrF excimer laser, Excimer lamp, synchrotron radiating light, LED etc..In these, it is preferred to use ultrahigh pressure mercury lamp, high voltage mercury lamp, low pressure mercury lamp, electrodeless lamp, xenon arc lamp, metal halide lamp.
In addition, as electron beam, the electron beam of the energy with 50～1000keV, preferably 100～300keV launched from Cockcroft-Walton type, model Dege loudspeaker husband's type, resonance variable-pressure, insulating core variable-pressure, linear type, various electron-beam accelerator such as high-frequency and high-voltage (dynamitron) type, high-frequency type etc. can be enumerated.
As active-energy beam irradiating apparatus, it is preferred to use the irradiation unit that range of exposures is restricted.As such irradiation unit, the UV irradiation unit of point-type is suitable for simply a range of irradiation, and is susceptible to the change changing irradiation position together with coating width.As the UV irradiation unit of point-type, " SP-9 " (trade name) that USHIO motor (strain) is made etc. is commercially available.The UV irradiation unit of point-type, it is possible to arranged in the way of irradiating the scope of such as 2～3cm.
About the active energy ray irradiation to region, both ends A in the 1st curing process, it is under ultraviolet situation at active energy ray, from the view point of prevent resin from peeling off, it is preferable that the accumulated light in ultraviolet UVA is 10mJ/cm2Above 400mJ/cm2Hereinafter, from the view point of resin residue reduces effect, it is preferred to 30mJ/cm2Above 400mJ/cm2Below.If it exceeds 400mJ/cm2, curing reaction excessively carries out, its result on the border of cured portion and uncured portion, sometimes due to film thickness difference, internal stress deformation and produce resin peel off.
[3] the 2nd curing process
This operation is when the surface of the casting mold of the surface configuration by having regulation is pressed against the surface of coating layer, irradiates active energy ray from the lateral coating layer of base material film, makes coating layer solidify, thus forming the operation of the resin bed after solidifying on base material film.Thus, while making coating layer solidify, by the transferring surface shape of casting mold to painting layer surface.
About this operation, such as shown in fig. 1, coating layer 12 surface by the duplexer at the base material film 11 and coating layer 12 that have passed through the 1st curing process, use niproll 23 compression bonding apparatus such as grade, it is pressed against the casting mold 22 of roll shape, use active-energy beam irradiating apparatus 21 in this condition, irradiate active energy ray from base material film 11 side, make coating layer 12 solidify and carry out.The use of niproll prevent bubble be mixed between coating layer and casting mold on effectively.Active-energy beam irradiating apparatus can use 1 machine or multiple stage machine.
After the irradiation of active energy ray, duplexer is peeled off from casting mold 22 with the niproll 24 of outlet side for fulcrum.The blooming being made up of the coating layer (hereinafter also referred to " resin bed ") after base material film and solidification obtained, is batched typically by film devices for taking-up 30.Now, for nurse tree lipid layer, by the adhesive phase with releasable, can batch while paste, at resin layer surface, the protecting film limit formed by polyethylene terephthalate, polyethylene etc..Further, the shape of the casting mold used is not limited to roll shape.After peeling off from casting mold, the active energy ray that can carry out adding irradiates.
For the kind of active energy ray used in this operation and light source, same with the 1st curing process.Being in ultraviolet situation at active energy ray, the accumulated light in ultraviolet UVA is preferably 40mJ/cm2Above 2000mJ/cm2Below, more preferably 70mJ/cm2Above 1800mJ/cm2Below.At accumulated light less than 40mJ/cm2When, it is intended to the solidification of coating layer becomes insufficient, and the hardness of the resin bed obtained reduces, or uncured resin is attached to deflector roll etc., becomes the reason that operation is polluted.Additionally, at accumulated light more than 2000mJ/cm2When, due to the heat radiated from ultraviolet lamp, base material film shrinks and becomes the reason of fold sometimes.
The casting mold used in this operation, for giving required shape to the painting layer surface formed on base material film, has the surface configuration that the transfer print structure of the shape required by this is formed.By the surface at coating layer, coating layer is made to solidify while make this surface configuration be pressed against painting layer surface limit such that it is able to by the transferring surface shape of casting mold in painting layer surface.As casting mold, the casting mold (such as mirror roller) with the surface formed by minute surface and the casting mold (such as knurling rolls) with convex-concave surface can be enumerated.
When casting mold has convex-concave surface, the pattern of concaveconvex shape can be the pattern of rule, it can also be random patterns, or it is paved with the false random patterns of the random patterns of more than a kind of specific dimensions, from preventing from making the aspect of the colored one-tenth iridescence of reflection image due to the reflection interference of light due to surface configuration, it is preferred to random patterns or false random patterns.
To the outer shape of casting mold, there is no particular restriction, it is possible to is tabular, it is also possible to be cylindric or cylindric roller, from continuous production aspect, it is preferred to the casting mold that mirror roller, knurling rolls etc. are cylindric or cylindric.In this case, the surface configuration of regulation is formed in the side of cylindric or cylindric casting mold.
To the material of the base material of casting mold, there is no particular restriction, it is possible to suitably selects from metal, glass, carbon, resin or their complex, from the aspect of processability etc., it is preferable that metal.As the metal material being preferably used, from the view point of cost, aluminum, ferrum or the alloy etc. based on aluminum or ferrum can be enumerated.
As the method obtaining casting mold, the method (JP2006-53371-A) such as implementing process for electroless nickel plating after base material is ground and implements sandblasting processing can be enumerated；After base material is implemented copper facing or nickel plating, it is ground, after implementing sandblasting processing, implements the method (JP2007-187952-A) of chromium plating；After implementing copper facing or nickel plating, it is ground, after implementing sandblasting processing, implements etching work procedure or copper facing operation, next implement the method (JP2007-237541-A) of chromium plating；After the surface of base material is implemented copper facing or nickel plating, it is ground, photosensitive resin film is formed at ground topcoating cloth, on this photosensitive resin film by pattern exposure after, develop, use developed photosensitive resin film as mask be etched process, photosensitive resin film is peeled off, and then be etched processing, after making male and fomale(M&F) passivation, the method that the male and fomale(M&F) formed is implemented chromium plating；With use the work mechanism such as lathe, the method (WO2007/077892-A) etc. the base material becoming casting mold cut with cutting element.
The surface unevenness profile of the casting mold formed by random patterns or false random patterns, such as can pass through to adopt the random patterns that FM silk screening, DLDS (the low diversity sequence of power: DynamicLow-DiscrepancySequence) method, the method utilizing the microphase-separated pattern of block copolymer or band filter method etc. generate to expose on photosensitive resin film, develop, use the photosensitive resin film after development as mask, be etched processing and being formed.
The blooming of the present invention obtained as mentioned above, it is suitable for the image display devices such as liquid crystal indicator, for instance may is that the resin bed on base material film is the hard coat film (sometimes with light transmission microgranule) of the hard conating for the damage preventing various external force from causing；Resin bed be the light diffusion layer (containing as the light transmission microgranule of light diffusing agent) for making to improve visual angle from the light diffusion of liquid crystal cells injection depending on recognizing sidelight diffusion barrier；Resin bed is the antiglare film of the antiglare layer (sometimes with light transmission microgranule) with concave-convex surface mirroring, dazzling for preventing outer light；Resin bed is the rear side optical diffusion film (diffuser plate) etc. preventing the light diffusion layer (the light transmission microgranule containing as light diffusing agent) of the ripple etc. due to back light unit for making to incide the diffusion of the light of liquid crystal cells.Hard coat film, depending on recognizing sidelight diffusion barrier and antiglare film, usually used as depending on recognizing the using (that is, be configured at the surface of image display device depending on recognizing side protecting film to fit in light polarizing film of lateral deviation vibration plate.).Rear side optical diffusion film fits in light polarizing film usually used as the backlight side protecting film of backlight side polarization plates.
Blooming about the present invention, it is possible to also there is on the resin layer the anti-reflection layer of (face of the opposition side of base material film) stacking.Anti-reflection layer is arranged to make reflectance infinitely reduce, by the formation of anti-reflection layer, it is possible to prevent mirroring to display picture.As anti-reflection layer, the low-index layer being made up of the material that refractive index ratio resin bed is low can be enumerated；The stepped construction etc. of the high refractive index layer being made up of the material of refractive index ratio resin floor height and the low-index layer being made up of the material that the refractive index of this high refractive index layer of refractive index ratio is low.To the laminating method of anti-reflection layer, there is no particular restriction, can directly stacking on the resin layer, it is possible to additionally prepares the product that stacking anti-reflection layer obtains on base material film in advance, uses the laminatings such as binding agent on the resin layer.
<polarization plates>
The polarization plates of the present invention has: light polarizing film and by base material film side and this light polarizing film to in the way of in this light polarizing film stacking adopt the blooming that aforesaid manufacture method obtains.Light polarizing film has the function taking out rectilinearly polarized light from incident illumination, and its kind is not particularly limited.As the example of preferred light polarizing film, the dichromatic pigment light polarizing film by polyvinyl alcohol resin absorption orientation can be enumerated.As polyvinyl alcohol resin, except the saponified polyvinyl alcohol as vinylacetate, also can enumerate part formolation polyvinyl alcohol, ethylene/vinyl acetate copolymer saponified etc..As dichromatic pigment, iodine or dichromatic organic dyestuff can be used.Additionally, the polyenoid alignment films of the desalination acid treatment thing of the processed thing of polyvinyl alcohol, polrvinyl chloride, light polarizing film also can be become.The thickness of light polarizing film is generally about 5～80 μm.
Polarization plates about the present invention; the blooming that can the present invention relates in one or both sides (the be generally one side) stacking of above-mentioned light polarizing film, it is also possible at a laminating transparent protective layer of above-mentioned light polarizing film, the blooming that the present invention relates in another side stacking.
Now, blooming also has the function of the protective clear layer (protecting film) as light polarizing film.Protective clear layer can adopt the method using adhesive etc. to be fitted by transparent resin film, the method etc. of the coating coating fluid containing transparent resin is formed in light polarizing film.Similarly, the blooming that the present invention relates to can use adhesive etc. to fit in light polarizing film.
Become the transparent resin film of protective clear layer; the excellences such as preferably clear, mechanical strength, heat stability, moisture shielding; as such transparent resin film, the cellulose-based resins such as cellulose acetate such as such as triacetyl cellulose, diacetyl cellulose, cellulose acetate propionate can be illustrated；Polycarbonate-based resin；Polyacrylate, polymethyl methacrylate etc. (methyl) acrylic resin；The polyester based resin such as polyethylene terephthalate, PEN；The chain polyolefin-based resins such as polyethylene, polypropylene；Cyclic polyolefin hydrocarbon system resin；Phenylethylene resin series；Polysulfones；Polyether sulfone；The film that polyvinyl chloride resin etc. are formed.These transparent resin films can be the transparent resin film of optical isotropy, for the purpose of the compensation at visual angle during to be assembled in image display device, it is possible to is optically have anisotropic transparent resin film.
<image display device>
The image display device of the present invention is by the polarization plates of the invention described above and is combined by the image-displaying member that various information mirror at picture.The kind of the image display device of the present invention is not particularly limited, beyond the liquid crystal display (LCD) of liquid crystal panel, the screen etc. of Braun tube (cathode ray tube: CRT) display, plasma scope (PDP), field-emitter display (FED), Surface conducting electronic emitting component display (SED), organic el display, laser writer, projection TV can be enumerated.
Such as, when the polarization plates of the present invention being configured on liquid crystal cell and manufacture liquid crystal panel, configuration is on liquid crystal cell (to make its resin bed become outside) in the way of its light polarizing film becomes liquid crystal cell side polarization plates.For other image display device too.Blooming be configurable on image-displaying member depending on recognizing side, it is possible to be arranged in backlight side, or be configurable on this two side.When being arranged in blooming depending on recognizing side, blooming can as function such as hard coat film, optical diffusion film, antiglare film or antireflection films.On the other hand, when blooming is arranged in backlight side, blooming can as making to incide the light diffusion of liquid crystal cells, preventing the function such as optical diffusion film (diffuser plate) of ripple etc..
Embodiment
[embodiment 1]
(1) making of roller casting mold
Prepare to implement the copper-plated product of Ba Lade on the surface of the aluminum roller (A5056 according to JIS) of diameter 200mm.Ba Lade copper coating is made up of copper coating/thin silvering/surface copper coating, and the thickness that coating is all is set as about 200 μm.This copper coatings is carried out mirror ultrafinish, at ground copper coatings photosensitive resin coating, dries, define photosensitive resin film.Then, photosensitive resin film adopt laser be exposed by the pattern that the pattern shown in Fig. 3 arranges repeatedly, develop.Exposed and developed use LaserStreamFX ((strain) ThinkLaboratory system) adopting laser carries out.
Further, the view data as the pattern shown in Fig. 3 is by the random configuration of point of diameter 16 μm, it is made with the size of 20.9mm × 20.9mm, 12800dpi.The photoresist of eurymeric is used for photosensitive resin film.
Then, the 1st etch processes has been carried out with copper chloride liquid.Etch quantity now is set as 3 μm.From the roller after the 1st etch processes, photosensitive resin film is removed, again carried out the 2nd etch processes with copper chloride liquid.Etch quantity now is set as 10 μm.Then, carry out chromium plating processing (thickness of chrome plating 4 μm), make roller mould.
(2) making of blooming
By following composition mixing, modulate ultra-violet solidified coating fluid.
Uv curing resin: pentaerythritol triacrylate 60 weight portion and polyfunctional carbamate acrylate (reaction product of hexamethylene diisocyanate and pentaerythritol triacrylate) 40 weight portions,
Photoepolymerizationinitiater initiater: " LucirinTPO " (BASF AG's system, chemical name: TMDPO) 5 weight portions,
Retarder thinner: ethyl acetate 100 weight portion.
Use mold pressing coating machine by above-mentioned coating solution to triacetyl cellulose (TAC) film (base material film) of thick 80 μm, form coating layer, obtain the duplexer [painting process] of base material film and coating layer.Make the duplexer obtained dried with drying oven, use " SP-9 " (trade name) that ultraviolet lamp USHIO motor (strain) is made, from the both ends area illumination ultraviolet of the width of the lateral coating layer of coating layer so that the accumulated light UVA region is 100mJ/cm2[the 1st curing process].The width of the UVA irradiation area in the 1st curing process is two ends respectively 2cm.
Then, at the painting layer surface of the duplexer that have passed through the 1st curing process, niproll is used to be pressed against by the roller casting mold previously obtained and closely sealed.In this condition from base material film side irradiation ultraviolet radiation so that the maximal illumination UVA is 700mW/cm2, the accumulated light in UVA is 300mJ/cm2, make coating layer solidify [the 2nd curing process].Then, from chrome-plated roller, duplexer is peeled off, thus obtaining the blooming that average film thickness is 14 μm of the resin bed formed by the solidfied material of uv curing resin.
[embodiment 2]
It is 30mJ/cm except making the accumulated light in the UVA region of the 1st curing process2In addition, blooming has been made similarly to Example 1.
[embodiment 3]
It is 10mJ/cm except making the accumulated light in the UVA region of the 1st curing process2In addition, blooming has been made similarly to Example 1.
[embodiment 4]
Except chromium plating being implemented on the surface of the iron roll (STKM13A according to JIS) to diameter 200mm, this chrome-plated surface being carried out mirror ultrafinish and the minute surface chrome-plated roller that obtains, beyond casting mold roller uses, make blooming similarly to Example 1.
[comparative example 1]
Except without implementing beyond the 1st curing process, make blooming similarly to Example 1.
[comparative example 2]
Except without implementing beyond the 1st curing process, make blooming similarly to Example 4.
[evaluation]
For the blooming of above-described embodiment 1～4 and comparative example 1,2, adopt following method to carry out resin and peel off evaluation, disbonded test evaluation, roller resin residue evaluation.
(resin is peeled off and is evaluated)
Observe the both ends of the resin bed of blooming with microscope, judgement resin as described below is peeled off.Show the result in table 1.
Have: observe that resin is peeled off,
Nothing: do not observe that resin is peeled off.
(disbonded test evaluation)
Carry out the disbonded test peeled off after the resin layer surface sticking glass paper self-adhesive tape of the end of blooming, the shape of the resin bed end before and after test peeled off after observing sticking glass paper self-adhesive tape with microscope, thus the fissility of decision tree lipid layer end as described below.Show the result in table 1.
A: before and after test, shape is not changed in,
C: by the comparison of the shape before and after testing, confirm the stripping of the end of resin bed.
(the resin residue evaluation of roller)
Casting mold roller surface after the manufacture of visualization blooming, proceeds as described below judgement.Show the result in table 1.
A: almost without the resin residue observed on roller,
B: marginally observe the resin residue on roller,
C: observe the resin residue on roller in large quantities.
[table 1]
Result shown in table 1 it can be seen that carried out the blooming of the embodiment 1～4 of the 1st curing process, make blooming resin bed region, both ends in resin peel off obtain suppression.Additionally, the UVA accumulated light in making the 1st curing process is 100mJ/cm2Embodiment 1 blooming manufacturing process in, almost without the resin residue observed on roller.

Claims (9)

1. a manufacture method for blooming, comprising:
Painting process, it is coated with the coating fluid containing active energy ray-curable resin on base material film, forms coating layer；
1st curing process, it is to the both ends area illumination active energy ray in the orthogonal direction of the conveying direction with described base material film of described coating layer；With
2nd curing process, it is when the surface of described coating layer is pressed against on the surface making casting mold, irradiates active energy ray from the lateral described coating layer of described base material film.
2. the method for claim 1, wherein
Region, described both ends is the region of the width apart from the both ends of described coating layer with regulation, and the width of this regulation is the scope of 100 μm～5cm.
3. method as claimed in claim 1 or 2, wherein,
The described active energy ray irradiated in described 1st curing process is ultraviolet,
Accumulated light in described ultraviolet UVA is 10mJ/cm2Above 400mJ/cm2Below.
4. method as claimed in claim 3, wherein,
Accumulated light in described ultraviolet UVA is 30mJ/cm2Above 400mJ/cm2Below.
5. method as claimed in claim 1 or 2, wherein,
The surface of described casting mold has fine concaveconvex shape, in the 2nd curing process, fine concaveconvex shape is transferred to painting layer surface.
6. method as claimed in claim 3, wherein,
The surface of described casting mold has fine concaveconvex shape, in the 2nd curing process, fine concaveconvex shape is transferred to painting layer surface.
7. method as claimed in claim 4, wherein,
The surface of described casting mold has fine concaveconvex shape, in the 2nd curing process, fine concaveconvex shape is transferred to painting layer surface.
8. a polarization plates, it has:
Light polarizing film and
By base material film side and described light polarizing film to in the way of in described light polarizing film the blooming adopting method manufacture as according to any one of claim 1～7 of stacking.
9. an image display device, it has polarization plates as claimed in claim 8 and image-displaying member,
In the way of its light polarizing film becomes described image-displaying member side, described polarization plates is arranged on described image-displaying member.
CN201210078024.XA 2011-03-29 2012-03-22 The manufacture method of blooming, polarization plates and image display device Expired - Fee Related CN102736135B (en)

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