WO2004034107A1 - 転写性液晶積層体 - Google Patents
転写性液晶積層体 Download PDFInfo
- Publication number
- WO2004034107A1 WO2004034107A1 PCT/JP2003/012962 JP0312962W WO2004034107A1 WO 2004034107 A1 WO2004034107 A1 WO 2004034107A1 JP 0312962 W JP0312962 W JP 0312962W WO 2004034107 A1 WO2004034107 A1 WO 2004034107A1
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- WO
- WIPO (PCT)
- Prior art keywords
- liquid crystal
- protective layer
- layer
- cholesteric
- substrate
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
Definitions
- the present invention relates to a transferable liquid crystal laminate having a cholesteric liquid crystal layer used for the purpose of imparting a design improvement effect or a forgery prevention effect, and more particularly, to a releasable light substrate which has been subjected to an easy adhesion treatment.
- the present invention relates to a transferable liquid crystal laminate having good foil cutting properties when used.
- These anti-counterfeit items and the like are usually prepared in the form of a laminated film for transfer, and are transferred from the laminated film for transfer to a transfer target by a method such as hot stamping.
- a hot stamping method or the like used as a transfer method a temperature and a pressure are simultaneously applied to a transfer laminated film, so that a release transfer portion is transferred to an object to be transferred.
- the foil cutting property between the peel-transfer part and the non-peel-transfer part is required. That is, if the foil cutting property is not good, the peeling transfer portion cannot be transferred in a desired shape.
- a transferable laminate has a release transfer layer formed on a removable substrate.
- the release force during release transfer is determined by the surface condition of the removable substrate and the properties of the release transfer portion. If the peeling force is too small, the peelability will be good, but the peeling will be accompanied by a non-peeled part, and the foil breakage will be poor. On the other hand, if the peeling force is too large, the peelability deteriorates, and sufficient transfer to the transferred body is not performed, and a problem occurs that a part of the peel transfer layer remains on the re-peelable substrate side.
- the present invention relates to a transferable liquid crystal laminate having a cholesteric liquid crystal layer, which has good foil breakability, excellent transfer state after transfer, and generation of burrs that cause a reduction in yield.
- An object of the present invention is to provide a liquid crystal laminate having a small transferability.
- the present invention relates to a transferable liquid crystal laminate comprising at least a removable substrate / protective layer / cholesteric liquid crystal layer, wherein the protective layer side of the removable substrate is subjected to an easy adhesion treatment.
- the peeling force between the removable substrate and the protective layer is preferably from 1.95 N / m to 19.5 NZm.
- the cholesteric liquid crystal layer partially has a diffraction function.
- the transferable liquid crystal laminate of the present invention comprises at least a removable substrate / protective layer Z cholesteric liquid crystal layer.
- the term “removable substrate protective layer Z cholesteric liquid crystal layer” means a configuration in which a removable substrate, a protective layer, and a cholesteric liquid crystal layer are laminated in this order.
- the removable substrate which is a component of the present invention, is not particularly limited as long as it is a film-like material having an easy adhesion treatment on the protective layer side and can be peeled off from the protective layer. It can be appropriately selected from polypropylene, poly (4-methyl-1-pentene-11), polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polycarbonate and the like. Further, a surface treatment such as an antistatic treatment may be applied to the surface of the removable substrate and z or the protective layer side.
- the thickness of the removable substrate is from 10 to 100 ⁇ , preferably from 12 to 38 ⁇ . Outside this range, the transportability of the substrate deteriorates, making the production of the laminate difficult, and the removability deteriorates, which is not preferable.
- the peeling force between the easily-adhesive treated surface of the removable substrate and the protective layer is from 1.95 N / m to 19. 5 N / m, preferably 3.9 N / m to ll. NZrn.
- the protective layer (sometimes referred to as protective layer 1), which is a component of the present invention, has a good adhesiveness to the cholesteric liquid crystal layer and a range that does not impair the optical characteristics of the liquid crystal layer. There is no particular limitation.
- the protective layer forming material may be formed into a film, a sheet, or a thin film.
- a photo-curable or electron beam-curable reactive adhesive is preferably used as the material for forming the protective layer.
- Examples of such a reactive adhesive include a photopolymerizable or electron beam polymerizable prepolymer and / or a monomer, if necessary, other monofunctional monomers, polyfunctional monomers, various polymers, stabilizers, and photopolymerizable polymers. Those containing an initiator, a sensitizer and the like can be used.
- Examples of the photopolymerizable or electron beam polymerizable prepolymers include polyester acrylate, polyester methacrylate, polyurethane urethane acrylate, polyurethane methacrylate, epoxy acrylate, epoxy methacrylate, and polyol acrylate. And polyol metathallate.
- Examples of monomers having photopolymerizability or electron beam polymerizability include monofunctional acrylates, monofunctional methacrylates, difunctional acrylates, difunctional methacrylates, trifunctional or higher polyfunctional acrylates, and polyfunctional methacrylates. it can.
- Aronix acrylic special monomers and oligomers; manufactured by Toagosei Co., Ltd.
- light esters manufactured by Kyoeisha Chemical Co., Ltd.
- Biscoat manufactured by Osaka Organic Chemical Industry Co., Ltd.
- photopolymerization initiator for example, benzophenone derivatives, acetophenone derivatives, benzoin derivatives, thioxanthones, Michler's ketone, benzyl derivatives, triazine derivatives, acyl phosphinoxides, azo compounds and the like can be used. it can.
- the viscosity of the photo-curable or electron beam-curable reactive adhesive that can be used in the present invention can be appropriately selected depending on the processing temperature of the adhesive and the like, and cannot be determined unconditionally. 10 to 2000 mPa's at 5 ° C, preferably 50 to: 100
- OmPa ⁇ s more preferably 100 to 500 mPa-s. Viscosity is 10m If it is lower than Pa ⁇ s, it becomes difficult to obtain a desired thickness. On the other hand, if the pressure is higher than 2000 mPa ⁇ s, the workability may decrease, which is not desirable. When the viscosity is out of the above range, it is preferable to appropriately adjust the solvent and the monomer ratio to obtain a desired viscosity.
- a known curing method such as a low-pressure mercury lamp, a high-pressure mercury lamp, an ultra-high-pressure mercury lamp, a metal halide lamp, or a xenon lamp can be used as a method for curing the adhesive. it can.
- the exposure dose can not be said sweepingly because it varies depending on the kind of the reactive adhesive to be used, it is generally 50 ⁇ 2000mJ Zcm 2, preferably 1 00 ⁇ 1 000m jZcm 2.
- the method of curing the adhesive is appropriately selected depending on the penetrating power and curing power of the electron beam, and cannot be determined unconditionally.
- curing can be carried out by irradiation at an acceleration voltage of 50 to 1000 kV, preferably 100 to 500 kV.
- an ultraviolet absorber may be added to the reactive adhesive.
- the ultraviolet absorber is not particularly limited as long as it is compatible or dispersible in the protective layer forming material.
- Organic UV absorbers such as organic compounds and inorganic UV absorbers such as cesium oxide, titanium oxide and zinc oxide can be used.
- a benzophenone-based compound having high ultraviolet absorption efficiency is preferably used.
- One or more ultraviolet absorbers can be added.
- the mixing ratio of the ultraviolet absorber in the protective layer varies depending on the protective layer forming material used, but is usually 0.1 to 20% by weight. / 0 , preferably 0.5 to 10% by weight.
- the surfactant is not particularly limited as long as it is compatible or dispersible in the material for forming the protective layer.
- a surfactant such as a perfluoroalkyl compound or a modified silicone compound can be used. Among them, perfluoroalkyl compounds are preferably used.
- one or more surfactants can be added.
- the blending ratio of the surfactant in the protective layer varies depending on the protective layer forming material used, but is usually 0.1 to 10% by weight, preferably 0.2 to 3% by weight.
- the thickness of the protective layer cannot be unequivocally determined because it varies depending on the intended use and its workability, but it is usually 0.5 to 50 ⁇ , preferably 1 to 10 ⁇ m.
- the formation method examples include a roll coating method, a die coating method, a per coating method, a curtain coating method, an extrusion coating method, a gravure roll coating method, a spray coating method, and a spin coating method. can do.
- the protective layer may have a region having a hard coat property in a part thereof.
- the cholesteric liquid crystal layer which is a constituent element of the present invention is not particularly limited as long as the cholesteric orientation can be fixed.
- Various types of polymer liquid crystal can be used as the polymer liquid crystal. Substances or mixtures thereof can be used.
- the main-chain polymer liquid crystal materials include polyester, polyamide, polycarbonate, polyimide, polyurethane, polybenzimidazole, polybenzoxazole, polybenzothiazole, polyazomethine, and polyazomethine. Examples thereof include high molecular weight liquid crystal substances such as ester amides, polyester carbonates, and polyester imids, and mixtures thereof.
- the side chain type polymer liquid crystal material includes a linear or cyclic skeleton chain such as a polyatalylate, a polymethacrylate, a polybutyl, a polysiloxane, a polyether, a polymalonate, or a polyester.
- a main chain type polymer liquid crystal material is preferable from the viewpoint of easiness of synthesis and orientation, and among them, a polyester type is particularly preferable.
- the constituent unit of the polymer include an aromatic or aliphatic diol unit, an aromatic or aliphatic dicarboxylic acid unit, and an aromatic or aliphatic hydroxycarboxylic acid unit.
- Low molecular liquid crystals include saturated benzene carboxylic acid derivatives, unsaturated benzene carboxylic acid derivatives, biphenyl carboxylic acid derivatives, aromatic oxy carboxylic acid derivatives, Schiff base derivatives, bisazomethine compound derivatives, and azo compound derivatives.
- various compounds having a functional group or site capable of reacting by heat or photo-crosslinking reaction or the like in the liquid crystal material may be blended as long as the expression of liquid crystallinity is not hindered.
- the functional group capable of performing a crosslinking reaction include the various reactive functional groups described above. For example, those having a basic skeleton of a biphenyl derivative, a phenylbenzoate derivative, a stilbene derivative, or the like into which a functional group such as an atalyloyl group, a vinyl group, or an epoxy group has been introduced may be used.
- a known method can be used. For example, a coating film is formed by applying a composition containing the liquid crystal substance and various compounds to be added as needed in a molten state, or by applying a solution of the composition on an alignment substrate. The coating is dried and heat-treated (liquid crystal orientation) or, if necessary, by means of light irradiation and the above-mentioned orientation-fixing means such as Z or heat treatment (polymerization / crosslinking). As a result, a liquid crystal material layer in which the orientation of the liquid crystal is fixed is formed.
- the solvent used for preparing the solution to be coated on the alignment substrate is not particularly limited as long as it can dissolve the liquid crystal substance or composition used in the present invention and can be distilled off under appropriate conditions.
- Ketones such as methyl, ethyl ethyl ketone and isophorone; ether alcohols such as butoxyshenole alcohol, hexyloxyethyl alcohol and methoxy-1-propanol; glycol ethers such as ethylene glycol dimethyl ether and diethylene glycol dimethyl ether Estenoles such as ethynole acetate, methoxypropyl acetate, ethizole lactate, phenols such as phenol and chlorophenol, N, N-dimethylformamide, N, N-dimethylacetamide, N-methylpyrrolidone Amides, black mouth form, Halogenated hydrocarbons such as tetrachloroethane and dichlorobenzene and the like or a mixture thereof are preferably
- a surfactant, an antifoaming agent, a leveling agent, and the like may be added to the solution in order to form a uniform coating film on the alignment substrate.
- a dichroic dye, a normal dye, a pigment, and the like can be added within a range that does not hinder the development of liquid crystallinity.
- the coating method is not particularly limited as long as uniformity of the coating film is ensured, and a known method can be employed. For example, roll coating, dicoating, dip coating, curtain coating, spin coating, and the like can be performed. After the application, a solvent removal (drying) step by a method such as a heater or hot air blowing may be inserted. The thickness of the applied film in the dry state is usually
- the orientation of the liquid crystal is formed by heat treatment or the like, the orientation is fixed.
- the liquid crystal is oriented to a liquid crystal phase manifesting temperature range by the self-orienting ability inherent to the liquid crystal material.
- the conditions for heat treatment cannot be unconditionally determined because the optimum conditions and limit values differ depending on the liquid crystal phase behavior temperature (transition temperature) of the liquid crystal material used. However, it is usually 10 to 300 ° C, preferably 30 to 30 ° C. It is in the range of ⁇ 250 ° C. If the temperature is too low, the alignment of the liquid crystal may not proceed sufficiently. If the temperature is too high, the liquid crystal material may be decomposed or the alignment substrate may be adversely affected.
- the heat treatment time is usually in the range of 3 seconds to 60 minutes, preferably in the range of 10 seconds to 30 minutes. If the heat treatment time is shorter than 3 seconds, the orientation of the liquid crystal may not be sufficiently completed, and if the heat treatment time is longer than 60 minutes, productivity is extremely deteriorated, and either case is not preferable.
- the liquid crystal material layer on the alignment substrate is fixed as it is using a method suitable for the liquid crystal material used.
- the alignment substrate examples include polyimide, polyamide, polyamide, polyamide, polyphenylene sulfide, polyphenylene oxide, polyetherenoketone, polyetherenoether ether ketone, polyether sulfone, polysulfone, polyethylene terephthalate, polyethylene naphthalate, and polyarylate.
- films such as triacetin resorose, epoxy resin, and phenol resin, and uniaxially stretched films of these films.
- these films are stretched under appropriate heating, and the film surface is rubbed in one direction with rayon cloth or the like, so-called rubbing treatment is performed.
- rubbing treatment may be performed by providing an orientation film made of a known orientation agent such as a ring agent, an oblique deposition treatment of silicon oxide or the like, or a film in which the orientation ability is developed by appropriately combining them.
- a metal plate such as aluminum, iron, or copper provided with regular fine grooves on the surface, various glass plates, and the like can also be used as the alignment substrate.
- the cholesteric liquid crystal layer in the present invention may have a region exhibiting diffractive ability in a part thereof.
- the region exhibiting the diffractive power means a region in which the light transmitted through the region or the light reflected by the region produces an effect such that the light is wrapped around a geometrically shadowed portion.
- the presence or absence of a region having diffractive ability is confirmed by, for example, the presence or absence of light (higher-order light) emitted at a certain angle other than light (0th-order light) that is incident on the above-mentioned region and transmitted or reflected linearly. can do.
- whether or not the region is formed can be confirmed by observing the surface shape and cross-sectional shape of the liquid crystal layer using an atomic force microscope, a transmission electron microscope, or the like.
- the region exhibiting the diffractive ability may be any region on the surface of the cholesteric liquid crystal layer and Z or inside the liquid crystal layer.
- part of the liquid crystal layer surface liquid crystal layer surface region
- part of the liquid crystal layer ⁇ liquid crystal layer
- the region may be provided in a plurality of regions of the cholesteric liquid crystal layer, for example, in the front and back regions of the liquid crystal layer and in the plurality of regions inside the liquid crystal layer.
- the region exhibiting diffractive power does not necessarily need to be formed as a layer having a uniform thickness on or in the liquid crystal layer, for example, and at least a part of the liquid crystal layer surface or inside the liquid crystal layer. It is only necessary that the region is formed in the region.
- a region having diffractive power may be provided so as to model a desired figure, pictogram, numeral or the like. Further, when a plurality of regions exhibiting diffractive power are provided, it is not necessary that all the regions exhibit the same diffractive power, and each region may exhibit different diffractive power.
- the orientation state of the region exhibiting diffractive power is such that the helical axis orientation is not uniformly parallel to the film thickness direction, preferably the helical axis orientation is not uniformly parallel to the film thickness direction, and the helical pitch is Equally in the film thickness direction It is desirable to form a cholesteric orientation that is not an interval.
- a helical structure in which the helical axis direction is uniformly parallel to the film thickness direction and the helical pitch is uniformly spaced in the film thickness direction is the same as the normal cholesteric orientation. It is desirable to form.
- the surface of the liquid crystal layer means a portion of the cholesteric liquid crystal layer alone that comes into contact with the outside, and the inside of the liquid crystal layer means a portion other than the portion that comes into contact with the outside.
- any of the above cholesteric liquid crystal layers can be used.However, from the viewpoint of the method of producing the cholesteric liquid crystal layer and the method of imparting diffractive power, at least a part of the liquid crystal layer surface region, preferably the liquid crystal layer surface region.
- a cholesteric liquid crystal layer having a region exhibiting diffractive power over the entire surface is preferably used.
- the optical effect slightly differs from the front and back of the liquid crystal layer, that is, a liquid crystal surface having a region exhibiting diffractive power and a liquid crystal surface opposite thereto.
- the thickness of the layer (region) exhibiting diffractive ability is usually 50% or less, preferably 3% or less, of the film thickness of the cholesteric liquid crystal layer. It is desirable that the layer is formed in a layer state having a thickness of 0% or less, more preferably 10% or less. If the thickness of the layer (region) exhibiting the diffraction ability exceeds 50%, the effects such as selective reflection characteristics and circular polarization characteristics due to the cholesteric liquid crystal phase are reduced, and the desired effects cannot be obtained. There is fear.
- the diffraction surface of the diffraction element substrate is superimposed on the cholesteric alignment film, and the cholesteric alignment film is applied by applying heat or pressure.
- the material of the diffraction element substrate used for the transfer of the diffraction pattern may be a material such as a metal or a resin, or a material having a diffraction function on the film surface, or a thin film having a diffraction function transferred to the film.
- a material such as a metal or a resin, or a material having a diffraction function on the film surface, or a thin film having a diffraction function transferred to the film.
- diffraction function Any material may be used as long as it has the same. Above all, in view of ease of handling and mass production, a film or film laminate having a diffraction function is more desirable.
- the term “diffraction element” used herein includes, as its definition, all diffraction elements that generate diffracted light, such as an original flat hologram.
- the type may be a diffraction element derived from the surface shape, a so-called film thickness modulation hologram type, a phase element independent of the surface shape, or a phase element converted from the surface shape into a refractive index distribution, so-called It may be a type of refractive index modulation hologram.
- the type of the film thickness modulation holo-lam is more preferably used because the diffraction pattern information of the diffraction element can be more easily given to the liquid crystal.
- a refractive index modulation type can be suitably used as long as it has undulations that cause diffraction in the surface shape.
- the transfer of the diffraction pattern can be performed, for example, by using a generally used heat roller, a laminator, a hot stamp, an electric heating plate, a thermal head, or the like under pressure and heating conditions.
- the conditions of pressurization and heating differ depending on the physical properties of the polymer liquid crystal or low-molecular liquid crystal used, the type of the diffraction element substrate, etc., and cannot be determined unconditionally, but usually the pressure is 0.0 :! ⁇ 10 OMPa, preferably 0.05 to 80 MPa, temperature 30 to 400 ° C, preferably 40 to 300 ° C Is selected as appropriate.
- a cholesteric liquid crystal layer in which a region exhibiting diffractive ability is formed in the alignment stage can be obtained.
- a polymer liquid crystal or a low molecular liquid crystal serving as a film material is not hindered from exhibiting a cholesteric phase, for example, a bisazide compound or dalicidyl methacrylate.
- the crosslinking agent can be added, and by adding these crosslinking agents, crosslinking can be performed in a state where a cholesteric phase is developed.
- various additives such as dichroic dyes, dyes, and pigments may be appropriately added to the high-molecular liquid crystal and the low-molecular liquid crystal as long as the effects of the present invention are not impaired.
- the cholesteric liquid crystal layer of the present invention may be provided on the side opposite to the removable substrate.
- a protective layer (hereinafter, referred to as a protective layer 2) may be formed.
- the protective layer 2 is not particularly limited as long as it has sufficient adhesiveness to the cholesteric liquid crystal layer, but a photo-curable or electron beam-curable reactive adhesive is preferably used.
- the reactive adhesive the same adhesive as described in the protective layer 1 can be used.
- the thickness of the protective layer 2 is usually 0.5 to 50 im, preferably ':! ⁇ 10 ⁇ um. Next, a method for manufacturing a laminate according to the present invention will be described.
- the method for producing the transferable liquid crystal laminate of the present invention is not limited to these, but it is desirable to carry out the following steps.
- the releasable substrate 2 on which the protective layer 2 is previously formed is adhered to the cholesteric liquid crystal surface in the above-described form, and then the releasable By peeling the substrate 2, a cholesteric liquid crystal layer having the form of “removable substrate Z protective layer cholesteric liquid crystal layer / protective layer 2” can be manufactured.
- the diffraction pattern on the cholesteric layer can be formed by (1) using a diffraction element substrate on the alignment substrate, (2) fixing the cholesteric alignment on the alignment substrate, and then transferring the diffraction pattern, and (3) converting the cholesteric layer onto the removable substrate. After the transfer, it can be formed by a method of transferring the diffraction pattern.
- the resulting liquid crystalline polyester N- methyl one 2 _ pyrrolidone solution (2 0 by weight 0/0) was prepared and applied by spin coating onto a polyphenylene two Rensurufui Dofuirumu that rubbed the solution. After the coating, a drying treatment was performed to remove N-methyl-2-pyrrolidone, and a liquid crystalline polyester coating film was formed on the polyphenylene sulfide film.
- the liquid crystalline film is subjected to a heat treatment in a heating atmosphere of 200 ° C. for 5 minutes, and cooled to room temperature, whereby a liquid crystalline polyester film exhibiting a golden specular reflection on a polyphenylene sulfide film.
- the film was a cholesteric alignment film in which cholesteric alignment showing selective reflection at 100 nm was fixed.
- the orientation state of the cholesteric alignment film was observed with a polarizing microscope and a transmission electron microscope of the cross section of the film, the helical axis orientation in the cholesteric phase was uniformly parallel to the film thickness direction, and the helical pitch was uniform in the film thickness direction. It was confirmed that cholesteric orientations were uniformly formed at regular intervals. Came.
- each analysis method of the obtained polyester is as follows.
- the concentration was measured in a solvent at a concentration of 0.5 gZl and 100 ml at 30 ° C.
- Adhesive (Alonix UV-3630 (trade name) manufactured by Toagosei Co., Ltd.) is diluted with M-150 (trade name) and M-315 (trade name) manufactured by Toagosei Co., Ltd. to reduce the viscosity to 30 OmPas. (Prepared) was applied with a bar coater to a thickness of 5 im.
- a tabletop laminator was used to attach the easily adhesive-treated surface of PET G2P 8-25 m manufactured by Teijin Dupont Co., Ltd. so that the adhesive-coated surface was the above-mentioned adhesive-coated surface, and was irradiated with ultraviolet light.
- the adhesive was cured to form a laminate of a removable substrate, a Z protective layer, a cholesteric liquid crystal layer, and a polystyrene sulfide film.
- the peeling force between the protective layer and the protective layer of the laminate was measured at 180 mm peeling at a peeling speed of 300 mm / min using a Toyo Seiki Co., Ltd.Strograph E-L. there were.
- Edmond's Scientific Japan Inc. Lum (900 lines / mm) and the cholesteric liquid crystal surface of the layered product are stacked so that they face each other.
- a laminator DX-350 manufactured by Tokyo Laminex at 120 ° C and 0.3 MPa, Heat and pressure were applied under the condition of a roll contact time of 1 second (diffraction grating film / cholesteric liquid crystal layer / protective layer z removable substrate). After cooling to room temperature, the diffraction grating film was removed. Observation of the cholesteric liquid crystal plane on which the diffraction grating film was superimposed revealed that the rainbow color caused by the diffraction pattern and the selective reflection characteristic of the cholesteric liquid crystal were clearly observed.
- the helical axis orientation in the cholesteric phase was not uniformly parallel to the film thickness direction. It was confirmed that a cholesteric orientation in which the helical pitch was not uniformly spaced in the film thickness direction was formed in the surface region of the liquid crystal layer. In other regions, it was confirmed that the cholesteric orientation was formed in which the helical axis direction was uniformly parallel to the film thickness direction and the helical pitch was uniformly uniform in the film thickness direction. .
- a hot-melt adhesive (Sparklon 851 L, manufactured by Nippon Paper Industries Co., Ltd.) is applied to the cholesteric liquid crystal layer surface with a bar coater so as to have a thickness of 5 m. Liquid crystal layer A laminate composed of the hot melt adhesive layer was obtained.
- the obtained laminate is heated and pressed by a hot roll from the releasable substrate side using a roll-type hot stamping machine (RD-150D manufactured by Navitas Co., Ltd.). Transcription was performed on Reem Kinmari 90).
- a roll-type hot stamping machine (RD-150D manufactured by Navitas Co., Ltd.). Transcription was performed on Reem Kinmari 90).
- the transfer portion has good foil-cutting properties, no peeling occurs with the peeled portion accompanied by the non-peeled portion, and no paris occurs, and the transfer is not sufficiently performed on the transfer target. No peeling failure remained on the peeled substrate side.
- a removable substrate use a table-top laminator to bond the 8 ⁇ m easily-adhesive treated PET SG2-3 manufactured by Teijin Dupont Co., Ltd. to the above-mentioned adhesive-coated surface, and irradiate with ultraviolet light to adhere.
- the agent was cured to form a laminate of the removable substrate Z protective layer Z cholesteric liquid crystal layer Z polyphenylene sulfide film.
- a laminate was obtained, which was laminated in the order of / protective layer / cholesteric liquid crystal layer.
- the peeling force between the protective layer of the laminated body and the protective layer was measured at 180 ° peeling speed and a peeling speed of 30 OmmZ using a Toyo Seiki strograph E-L, and found to be 5.07 NZm. .
- a hot-melt adhesive (Super-Clon 851 L, manufactured by Nippon Paper Industries Co., Ltd.) is applied to the cholesteric liquid crystal layer surface with a bar coater to a thickness of 5 m, and the releasable substrate protective layer Z cholesteric liquid crystal layer A laminate composed of the adhesive layer was obtained.
- the obtained laminate is heated and pressed by a hot roll from the removable substrate side using a roll-type hot stamping machine (RD-150D manufactured by Navitas Co., Ltd.). Mukinmari 90).
- the transfer portion has good foil-cutting properties, no peeling occurs with the peeled portion accompanied by the non-peeled portion, and no paris occurs, and the transfer is not sufficiently performed on the transfer target. No peeling failure remained on the peeled substrate side.
- UV curable benzophenone-based UV absorber Cyasor bUV-24 (manufactured by Scitech) was added at 5.0% by weight as an adhesive serving as a protective layer on the cholesteric liquid crystal surface of the cholesteric alignment film obtained in Reference Example 1.
- Adhesive (Alonix UV-3630 (trade name) manufactured by Toagosei Co., Ltd. is diluted with M-150 (trade name) and M-315 (trade name) manufactured by Toagosei Co., Ltd. to reduce the viscosity to 300 mPa ⁇ s. Prepared) was applied to a thickness of 5 / in with a bar coater.
- the peeling force between the protective layer and the protective layer of the laminate was measured at 180 ° peeling at a peeling speed of 30 OmmZ using a Toyo Seiki Co., Ltd.Strograph E-IL. Met.
- a hot-melt adhesive (Sparklon 851 L, manufactured by Nippon Paper Industries Co., Ltd.) is applied to the cholesteric liquid crystal layer surface with a bar coater to a thickness of 5 ⁇ , and the re-peelable substrate ⁇ protective layer / cholesteric liquid crystal is applied.
- a laminate comprising a layer and a hot melt adhesive layer was obtained.
- the obtained laminate is heated and pressed by a hot roll from the side of the removable substrate using a roll-type hot stamping machine (RD-150D manufactured by Navitas Co., Ltd.), and the high-quality paper (C Transcription was performed on Reem Kinmari 90).
- the transfer portion has good foil-cutting properties, no peeling occurs with the peeled portion accompanied by the non-peeled portion, and no paris occurs, and the transfer is not sufficiently performed on the transfer target. No peeling failure remained on the peeled substrate side.
- Mold adhesive (ALONIX UV-366 (trade name) manufactured by Toagosei Co., Ltd.) is diluted with M-150 (trade name) and M-315 (trade name) manufactured by Toagosei Co., Ltd. Was adjusted to 30 OmPas) with a bar coater so as to have a thickness of 5/1 m.
- a PET laminator made by Teijin Dupont Co., Ltd., 25 ⁇ m was bonded using a desktop laminator so that the surface was coated with the above adhesive, and was irradiated with ultraviolet light to cure the adhesive.
- Protective layer / Cholesteric liquid crystal layer Z A laminate of a polyphenylene sulfide film was formed.
- the edge of the polyphenylene sulfide film used as the alignment substrate is held by hand and peeled in the 180 ° direction, the polyphenylene sulfide film and the cholesteric liquid crystal layer are peeled off at the interface, and the removable substrate / A laminate in which the protective layer / cholesteric liquid crystal layer was laminated in this order was obtained.
- a hot-melt adhesive (Sparklon 851 L, manufactured by Nippon Paper Industries Co., Ltd.) is applied to the cholesteric liquid crystal layer surface with a bar coater so as to have a thickness of 5 m.
- a laminate composed of the cholesteric liquid crystal layer Z and the hot melt adhesive layer was obtained.
- the obtained laminate is heated and pressed by a hot roll from the releasable substrate side using a roll-type hot stamping machine (RD-150D manufactured by Navitas Co., Ltd.), and the high-quality paper (C Transcription was performed on Reem Kinmari 90).
- the transferred part had poor foil-cutting properties, and burrs were generated when the peeled part was peeled off with the non-peeled part.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
- Laminated Bodies (AREA)
- Credit Cards Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03751416A EP1550887A4 (en) | 2002-10-10 | 2003-10-09 | TRANSFERABLE LIQUID CRYSTAL LAMINATE |
US10/530,456 US20060008649A1 (en) | 2002-10-10 | 2003-10-09 | Transferable liquid crystal laminate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002297002A JP2004133152A (ja) | 2002-10-10 | 2002-10-10 | 転写性液晶積層体 |
JP2002-297002 | 2002-10-10 |
Publications (1)
Publication Number | Publication Date |
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WO2004034107A1 true WO2004034107A1 (ja) | 2004-04-22 |
Family
ID=32089253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/012962 WO2004034107A1 (ja) | 2002-10-10 | 2003-10-09 | 転写性液晶積層体 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060008649A1 (ja) |
EP (1) | EP1550887A4 (ja) |
JP (1) | JP2004133152A (ja) |
KR (1) | KR20050062604A (ja) |
CN (1) | CN100343703C (ja) |
WO (1) | WO2004034107A1 (ja) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008183812A (ja) * | 2007-01-30 | 2008-08-14 | Nippon Oil Corp | 液晶フィルムの製造方法および光学素子用積層フィルム |
CN101276099B (zh) * | 2007-03-28 | 2012-03-21 | 奇美电子股份有限公司 | 配向膜的形成方法以及配向膜半成品与转印板的复合结构 |
US9557456B2 (en) | 2010-01-29 | 2017-01-31 | The United States Of America As Represented By The Secretary Of The Army | Broadband optics for manipulating light beams and images |
US11366254B2 (en) | 2010-01-29 | 2022-06-21 | Beam Engineering For Advanced Measurements Co. | High-efficiency wide-angle beam steering system |
US10120112B2 (en) | 2010-01-29 | 2018-11-06 | Beam Engineering For Advanced Measurements Co. | Diffractive waveplate lenses for correcting aberrations and polarization-independent functionality |
US10197715B1 (en) | 2013-03-15 | 2019-02-05 | Beam Engineering For Advanced Measurements Co. | Methods of diffractive lens and mirror fabrication |
US9983479B2 (en) | 2010-04-21 | 2018-05-29 | Beam Engineering For Advanced Measurements Co. | Fabrication of high efficiency, high quality, large area diffractive waveplates and arrays |
US10114239B2 (en) | 2010-04-21 | 2018-10-30 | Beam Engineering For Advanced Measurements Co. | Waveplate lenses and methods for their fabrication |
US20110262844A1 (en) | 2010-04-21 | 2011-10-27 | Beam Engineering For Advanced Measurement Co. | Fabrication of high efficiency, high quality, large area diffractive waveplates and arrays |
US10107945B2 (en) | 2013-03-01 | 2018-10-23 | Beam Engineering For Advanced Measurements Co. | Vector vortex waveplates |
US10185182B2 (en) * | 2013-03-03 | 2019-01-22 | Beam Engineering For Advanced Measurements Co. | Mechanical rubbing method for fabricating cycloidal diffractive waveplates |
WO2014164599A1 (en) * | 2013-03-11 | 2014-10-09 | U.S. Government As Represented By The Secretary Of The Army | Method of fabricating liquid crystal polymer film |
US10191296B1 (en) | 2015-06-30 | 2019-01-29 | Beam Engineering For Advanced Measurements Co. | Laser pointer with reduced risk of eye injury |
US9976911B1 (en) | 2015-06-30 | 2018-05-22 | Beam Engineering For Advanced Measurements Co. | Full characterization wavefront sensor |
US10436957B2 (en) | 2015-10-27 | 2019-10-08 | Beam Engineering For Advanced Measurements Co. | Broadband imaging with diffractive waveplate coated mirrors and diffractive waveplate objective lens |
US10423045B2 (en) | 2016-11-14 | 2019-09-24 | Beam Engineering For Advanced Measurements Co. | Electro-optical diffractive waveplate beam shaping system |
US10274805B2 (en) | 2017-06-13 | 2019-04-30 | Beam Engineering For Advanced Measurements Co. | Polarization-independent switchable lens system |
US11175441B1 (en) | 2018-03-05 | 2021-11-16 | Beam Engineering For Advanced Measurements Co. | Polarization-independent diffractive optical structures |
US11982906B1 (en) | 2018-03-05 | 2024-05-14 | Beam Engineering For Advanced Measurements Co. | Polarization-independent diffractive optical structures |
JP7118246B2 (ja) * | 2019-03-29 | 2022-08-15 | 富士フイルム株式会社 | 転写型加飾シート、転写型加飾シートの製造方法 |
JPWO2020203574A1 (ja) * | 2019-03-29 | 2020-10-08 | ||
US11294240B2 (en) | 2019-08-10 | 2022-04-05 | Beam Engineering For Advanced Measurements Co. | Diffractive waveplate devices that operate over a wide temperature range |
Citations (2)
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JP2000225769A (ja) * | 1999-02-08 | 2000-08-15 | Sekisui Chem Co Ltd | ホットスタンピングホイル |
EP1347313A1 (en) * | 2000-12-27 | 2003-09-24 | Dai Nippon Printing Co., Ltd. | Liquid crystal transfer body and method of transferring the liquid crystal transfer body |
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US4310577A (en) * | 1979-08-24 | 1982-01-12 | Liquid Crystal Products, Inc. | Liquid crystal film laminate |
DE3942663A1 (de) * | 1989-12-22 | 1991-06-27 | Gao Ges Automation Org | Datentraeger mit einem fluessigkristall-sicherheitselement |
JP2840918B2 (ja) * | 1994-07-01 | 1998-12-24 | 有限会社尾崎スクリーン | 転写シート |
US5540147A (en) * | 1994-12-02 | 1996-07-30 | Corning Incorporated | Method for forming a contoured planarizing layer for a color filter |
JP4208990B2 (ja) * | 1998-04-10 | 2009-01-14 | 新日本石油株式会社 | コレステリック液晶性積層体 |
KR100708510B1 (ko) * | 1999-04-21 | 2007-04-16 | 니폰 오일 코포레이션 (신 니혼 세키유 가부시키 가이샤) | 광학 라미네이트 |
-
2002
- 2002-10-10 JP JP2002297002A patent/JP2004133152A/ja active Pending
-
2003
- 2003-10-09 WO PCT/JP2003/012962 patent/WO2004034107A1/ja active Application Filing
- 2003-10-09 EP EP03751416A patent/EP1550887A4/en not_active Withdrawn
- 2003-10-09 CN CNB2003801021772A patent/CN100343703C/zh not_active Expired - Lifetime
- 2003-10-09 US US10/530,456 patent/US20060008649A1/en not_active Abandoned
- 2003-10-09 KR KR1020057006106A patent/KR20050062604A/ko not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000225769A (ja) * | 1999-02-08 | 2000-08-15 | Sekisui Chem Co Ltd | ホットスタンピングホイル |
EP1347313A1 (en) * | 2000-12-27 | 2003-09-24 | Dai Nippon Printing Co., Ltd. | Liquid crystal transfer body and method of transferring the liquid crystal transfer body |
Non-Patent Citations (1)
Title |
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See also references of EP1550887A4 * |
Also Published As
Publication number | Publication date |
---|---|
JP2004133152A (ja) | 2004-04-30 |
CN100343703C (zh) | 2007-10-17 |
CN1708703A (zh) | 2005-12-14 |
US20060008649A1 (en) | 2006-01-12 |
EP1550887A1 (en) | 2005-07-06 |
KR20050062604A (ko) | 2005-06-23 |
EP1550887A4 (en) | 2011-01-26 |
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