WO2016021692A1 - Procédé de fabrication de stratifié - Google Patents

Procédé de fabrication de stratifié Download PDF

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Publication number
WO2016021692A1
WO2016021692A1 PCT/JP2015/072384 JP2015072384W WO2016021692A1 WO 2016021692 A1 WO2016021692 A1 WO 2016021692A1 JP 2015072384 W JP2015072384 W JP 2015072384W WO 2016021692 A1 WO2016021692 A1 WO 2016021692A1
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WIPO (PCT)
Prior art keywords
light
meth
resin layer
base material
cured resin
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PCT/JP2015/072384
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English (en)
Japanese (ja)
Inventor
聖 金子
広希 飯田
一裕 東
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協立化学産業株式会社
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Priority to CN201580042355.XA priority Critical patent/CN106660067B/zh
Priority to KR1020177006004A priority patent/KR102312162B1/ko
Publication of WO2016021692A1 publication Critical patent/WO2016021692A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0076—Curing, vulcanising, cross-linking
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2310/00—Treatment by energy or chemical effects
    • B32B2310/08—Treatment by energy or chemical effects by wave energy or particle radiation
    • B32B2310/0806—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation
    • B32B2310/0831—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation using UV radiation

Definitions

  • the present invention relates to a method for manufacturing a laminate, and more specifically, to a method for manufacturing a laminate that is an image display device.
  • a light transmissive member is usually provided on a display body such as a liquid crystal display panel or an organic EL panel. It is known to use a photocurable resin composition for adhesion between a display body and a light transmissive member.
  • a light shielding layer such as a black matrix is often provided at the periphery of the light transmissive member in order to improve contrast and the like. Therefore, even if the display body and the light transmissive member are overlapped with each other through the photocurable resin composition and irradiated with light, the light is blocked by the presence of the light shielding layer, and the curing does not proceed sufficiently, resulting in flow out. Or a lack of adhesion may occur.
  • thermopolymerization initiator is blended in a photocurable resin composition, followed by light irradiation and further thermosetting (Patent Document 1).
  • the photocurable resin composition is applied to the surface of the display body so as to be thicker than the thickness of the light shielding layer, and ultraviolet rays are 10 to 80%.
  • a method in which light curing is performed so as to achieve a curing rate, and then a light transmissive member is stacked and then ultraviolet light is irradiated to perform main curing Patent Document 2.
  • An object of the present invention is to solve the above problems and to provide a method for manufacturing a laminate, for example, an image display device, in which substrates are bonded to each other with sufficient adhesive force using only a photocuring process.
  • the present invention 1 is a step of applying a photocurable resin composition to a substrate 1 to form a coating layer, and irradiating the coating layer with light having an ultraviolet irradiation intensity of less than 100 mW / cm 2 to temporarily cure the resin layer Laminating, including the step of bonding the base material 2 onto the temporarily cured resin layer, and the step of irradiating the temporary cured resin layer between the base material 1 and the base material 2 with light and performing the main curing.
  • the present invention relates to a method for manufacturing a body.
  • the present invention 2 relates to the method for producing a laminate of the present invention 1, wherein the light in the step of forming the temporarily cured resin layer is light having an ultraviolet irradiation intensity of 1 to 50 mW / cm 2 .
  • the present invention 3 forms the temporarily cured resin layer by irradiating light having an ultraviolet irradiation intensity of less than 100 mW / cm 2 so that the curing rate of the photocurable resin composition in the coating layer is 40 to 90%.
  • Invention 4 is a process for producing a laminate according to any one of Inventions 1 to 3, wherein light having an ultraviolet irradiation intensity of less than 100 mW / cm 2 is an LED having a peak at 365 nm and / or an LED having a peak at 405 nm. Regarding the method.
  • the present invention 5 is the present invention, wherein light having an ultraviolet irradiation intensity of less than 100 mW / cm 2 is light that has passed through an optical filter that cuts light having a wavelength of 300 nm or less and / or an optical filter that cuts wavelength of 500 nm or more.
  • the present invention relates to a method for producing any one of the laminates 1 to 4.
  • the present invention 6 relates to a method for producing a laminate according to any one of the present inventions 1 to 5, wherein the photocurable resin composition contains a (meth) acrylate oligomer and a photopolymerization initiator.
  • This invention 7 is related with the manufacturing method of the laminated body of this invention 6 whose (meth) acrylate oligomer is the (meth) acrylate oligomer which has (hydrogenated) polyisoprene, (hydrogenated) polybutadiene, or a polyurethane structure in frame
  • the invention 8 is any one of the inventions 1 to 7, wherein one of the substrate 1 and the substrate 2 is a liquid crystal display panel, an organic EL display panel, a protective panel or a touch panel, and the other is a light transmissive member.
  • the present invention relates to a method for producing a laminate.
  • the present invention 9 relates to a method for producing a laminate according to any one of the present inventions 1 to 8, wherein the laminate is an image display device.
  • a laminate in which substrates are bonded to each other with a sufficient adhesive force using only a photocuring process for example, an image display device is provided.
  • the method for producing a laminate of the present invention includes the following steps (A) to (D).
  • the base material 1 and the base material 2 are adhere
  • the substrate 1 and the substrate 2 are not particularly limited, and may be the same substrate or different substrates.
  • the laminated body may contain the further base material, and the adhesion method of the base material is not specifically limited.
  • a liquid crystal display device can be manufactured by using one of the substrate 1 or the substrate 2 as a liquid crystal display panel and the other as a light transmissive member, one as an organic EL display panel, and the other as a light transmissive member. By doing so, an organic EL display device can be manufactured.
  • a touch panel can be manufactured by using one of the substrate 1 or the substrate 2 as a light-transmitting substrate on which a transparent electrode is formed and the other as a light-transmitting member.
  • one of the substrate 1 or the substrate 2 can be a touch panel, and the other can be an icon sheet or a decorative board.
  • an image display device with a protection panel or a substrate with a protection panel can be manufactured by using one of the base material 1 or the base material 2 as a protection panel and the other as an image display device or various substrates.
  • the base material 1 can be a protective panel
  • the base material 2 can be a light transmissive member.
  • the light transmissive member When the light transmissive member is used, the light transmissive member only needs to have light transmittance according to the purpose of the laminated body. For example, when the laminated body is an image display device, an image formed on the display body is not necessary. What is necessary is just to have the light transmittance of the grade which can be visually recognized.
  • the light transmissive member include glass, (meth) acrylic resin, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyester, cycloolefin polymer, and other plate-like materials and sheet-like materials.
  • a light shielding layer may be formed on the light transmissive member.
  • Step A is a step of forming a coating layer by applying a photocurable resin composition to the substrate 1.
  • a photocurable resin composition the composition containing a (meth) acrylate oligomer and a photoinitiator can be used.
  • the (meth) acrylate oligomer is not particularly limited, and examples thereof include (hydrogenated) polyisoprene, (hydrogenated) polybutadiene, and (meth) acrylate oligomer having a polyurethane as a skeleton. These (meth) acrylate oligomers can be used alone or in combination of two or more.
  • (hydrogenated) polyisoprene includes polyisoprene and / or hydrogenated polyisoprene
  • (hydrogenated) polybutadiene includes polybutadiene and / or hydrogenated polybutadiene.
  • (Meth) acrylate oligomer having (hydrogenated) polyisoprene as a skeleton is also called (meth) acryl-modified polyisoprene, and preferably has a molecular weight of 1000 to 100,000, more preferably 10,000 to 50,000.
  • An example of a commercially available product is “UC-1” (molecular weight 25000) manufactured by Kuraray.
  • (Meth) acrylate oligomer having (hydrogenated) polybutadiene as a skeleton is also called (meth) acryl-modified polybutadiene, and preferably has a molecular weight of 500 to 100,000, more preferably 1,000 to 30,000.
  • An example of a commercially available product is “TE2000” (molecular weight 2000) manufactured by Nippon Oil Corporation.
  • the (meth) acrylate oligomer having a polyurethane as a skeleton is also called (meth) acryl-modified polyurethane, and preferably has a molecular weight of 1000 to 100,000, more preferably 10,000 to 50,000.
  • Examples of commercially available products include “UA-1” manufactured by Light Chemical Co., Ltd. and “UV3630ID80” manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
  • a (meth) acrylate oligomer having a polyurethane skeleton is particularly preferable.
  • (Meth) acrylate oligomers may be used alone or in combination of two or more.
  • the photopolymerization initiator is not particularly limited, but is 1- [4- (2-hydroxyethoxy) phenyl] -2-hydroxy-2-methyl-1-propan-1-one, 1-hydroxy-cyclohexyl-phenyl- Ketone, benzophenone, 2,2-dimethoxy-1,2-diphenylethane-1-one, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, 2,4,6-trimethylbenzoylphenylethoxyphosphine oxide, 2-benzyl- 2-dimethylamino-1- (4-morpholinophenyl) butanone-1,2-hydroxy-2-methyl-1-phenyl-propan-1-one, 2-methyl-1- [4-methylthio] phenyl] -2 -Morpholinopropan-1-one, benzoin methyl ether, benzoin ethyl ether Benzoin isobutyl ether, benzoin isopropyl ether, bis (2,4,6-trimethyl
  • the photopolymerization initiator is preferably 1-hydroxy-cyclohexyl-phenyl-ketone, 2,4,6-trimethylbenzoylphenylethoxyphosphine oxide or the like.
  • the photopolymerization initiator may be used alone or in combination of two or more.
  • the photopolymerization initiator is preferably 0.1 to 20 parts by mass, more preferably 0.5 to 15 parts by mass, and further preferably 1 to 10 parts by mass with respect to 100 parts by mass of the (meth) acrylate oligomer. Part by mass.
  • the photocurable resin composition can contain a (meth) acrylate monomer as a reaction diluent, for example, 2-ethylhexyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate Alkyl (meth) acrylates such as t-butyl (meth) acrylate and lauryl (meth) acrylate; alkoxy-substituted alkyl (meth) acrylates such as methoxyethyl (meth) acrylate; 2-hydroxyethyl (meth) acrylate and 2-hydroxy Hydroxy-substituted alkyl (meth) acrylates such as propyl (meth) acrylate and 2-hydroxybutyl (meth) acrylate; benzyl (meth) acrylate, phenyl (meth) acrylate, etc .; ethylene glycol di (meth) acrylate, diethylene Recall
  • alkyl (meth) acrylate such as lauryl (meth) acrylate, methoxyethyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, dicyclopentanyl (meth) acrylate and the like are preferable.
  • (Meth) acrylate monomers may be used alone or in combination of two or more.
  • the (meth) acrylate monomer is preferably 1 to 250 parts by weight, more preferably 20 to 200 parts by weight, and still more preferably 50 to 150 parts by weight with respect to 100 parts by weight of the (meth) acrylate oligomer. is there.
  • the photocurable resin composition may contain a plasticizer.
  • Plasticizers include dibutyl phthalate, diisononyl phthalate, diheptyl phthalate, di (2-ethylhexyl) phthalate, diisodecyl phthalate, butyl benzyl phthalate, etc .; dioctyl adipate, diisononyl adipate, dioctyl sebacate, diisononyl sebacate Polycarboxylic esters such as 1,2-cyclohexanedicarboxylic acid diisononyl; Phosphate esters such as tricresyl phosphate and tributyl phosphate; Trimellitic acid esters; Rubber-based polymers such as polyisoprene, polybutadiene and polybutene; Thermoplastic elastomers Petroleum resin; alicyclic saturated hydrocarbon resin; terpene resin such as terpene resin,
  • plasticizer polyvalent carboxylic acid esters, rosin ester resins, and the like are preferable, and 1,2-cyclohexanedicarboxylic acid diisononyl, (hydrogenated) rosin ester resins are more preferable.
  • the plasticizer may be used alone or in combination of two or more.
  • the plasticizer is preferably 10 to 500 parts by mass, more preferably 30 to 400 parts by mass, and still more preferably 50 to 300 parts by mass with respect to 100 parts by mass of the (meth) acrylate oligomer.
  • the photocurable resin composition can further contain an adhesion-imparting agent.
  • an adhesion-imparting agent a silane coupling agent such as vinyltrimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldi Ethoxysilane, 3-glycidoxypropyltriethoxysilane, p-styryltrimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane, 3- Methacryloxypropyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, N-2- (aminoethyl) -3-aminopropylmethyldimethoxysilane, N-2- (
  • ⁇ Adhesive agents may be used alone or in combination of two or more.
  • the adhesion-imparting agent is preferably 0.01 to 15 parts by mass, more preferably 0.1 to 10 parts by mass, and still more preferably 1 to 5 parts by mass with respect to 100 parts by mass of the (meth) acrylate oligomer. Part.
  • the photocurable resin composition can contain an antioxidant.
  • Antioxidants include BHT, 2,4-bis- (n-octylthio) -6- (4-hydroxy-3,5-di-t-butylanilino) -1,3,5-triazine, pentaerythrityl.
  • Tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], 2,2-thio-diethylenebis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) Propionate], triethylene glycol-bis [3- (3-tert-butyl-5-methyl-4-hydroxyphenyl) propionate], 1,6-hexanediol-bis [3- (3,5-di-t- Butyl-4-hydroxyphenyl) propionate], octadecyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate, N, N′-hexamethyle Bis (3,5-di-t-butyl-4-hydroxy-hydrocinnamamide), 1,3,5-trimethyl-2,4,6-tris (3,5-di-t-butyl-4- Hydroxybenzyl) benzene, tris- (3,5-di-t
  • the antioxidant is preferably 0.01 to 15 parts by weight, more preferably 0.1 to 10 parts by weight, and further preferably 1 to 5 parts by weight with respect to 100 parts by weight of the (meth) acrylate oligomer. Part.
  • an antifoaming agent a pigment, a filler, a chain transfer agent, a light stabilizer, a surface tension adjusting agent, a leveling agent, an ultraviolet absorber, and an antifoam are within the range not impairing the effects of the present invention.
  • An agent or the like can be blended.
  • the photocurable resin composition can be prepared by mixing each component.
  • the mixing method is not particularly limited, and various metals, plastic containers, stirring blades, and a stirrer can be used.
  • the method for applying the photocurable resin composition to the substrate 1 is not particularly limited, and a method using a die coater, a dispenser, screen printing, or the like can be used.
  • the thickness of the coating layer is not particularly limited, and can be, for example, 10 to 500 ⁇ m, and preferably 30 to 350 ⁇ m.
  • Step (B) is a step of irradiating the coating layer with light having an ultraviolet irradiation intensity of less than 100 mW / cm 2 to form a temporarily cured resin layer.
  • the light used for the irradiation in the step (B) has an ultraviolet irradiation intensity of less than 100 mW / cm 2 , and is preferably 50 mW / cm 2 or less, more preferably from the viewpoint of intensity development after the main curing. Is 30 mW / cm 2 or less, and is preferably 1 mW / cm 2 or more from the point of time until the provisionally cured resin layer can be formed.
  • the ultraviolet irradiation intensity is the maximum intensity measured with an illuminometer, and the illuminance having sensitivity in the wavelength region corresponding to the wavelength with the highest irradiation intensity in the wavelength distribution of 300 to 500 nm of the light source used. It can be measured by a meter.
  • the light source may have a single peak or a plurality of peaks in a wavelength distribution of 300 to 500 nm, as long as the highest irradiation intensity is less than 100 mW / cm 2 .
  • the integrated value of the irradiation intensity of the wavelength of 300 to 500 nm with respect to the integrated value of the irradiation intensity of all wavelengths is not particularly limited, but is preferable from the viewpoint of the intensity expression after the main curing. Is 90% or more, more preferably 95% or more, and still more preferably 98% or more.
  • a light source that emits ultraviolet rays (UV) can be used, and examples thereof include a metal halide lamp, a high-pressure mercury lamp, a xenon lamp, a mercury xenon lamp, a halogen lamp, and a pulse xenon lamp.
  • the light emitted from these light sources may be adjusted to light of a specific wavelength by passing through an optical filter. Specifically, it can be adjusted by passing through an optical filter that cuts light of a wavelength of 300 nm or less and / or an optical filter that cuts a wavelength of 500 nm or more.
  • optical filters examples include quartz interference filters (model number: A7028-05, manufactured by Hamamatsu Photonics), LT filters, RT filters (both manufactured by HOYA), and bandpass filters (produced by Eye Graphics). It is done.
  • Light with LED as light source can also be used. LED with 365 nm peak, LED with 405 nm peak, LED with 375 nm peak, LED with 385 nm peak, LED with 395 nm peak, etc. Can be mentioned.
  • the resin composition of the coating layer is temporarily cured to form a temporarily cured resin layer.
  • the irradiation method is not particularly limited, and for example, the irradiation can be performed so that the accumulated ultraviolet light amount is 30 to 7500 mJ / cm 2 .
  • Integrated light quantity is preferably 50 ⁇ 5000mJ / cm 2, more preferably 100 ⁇ 2000mJ / cm 2.
  • the curing rate of the temporary curable resin layer is preferably 40 to 90%, more preferably 45 to 80%, and still more preferably 50 from the viewpoints of strength development, flow-out, and prevention of dripping after the main curing. ⁇ 70%.
  • the curing rate is defined by the rate of reduction of (meth) acrylic groups before and after ultraviolet irradiation of the photocurable resin composition, and can be measured by FT-IR.
  • Step C is a step of bonding the base material 2 on the temporarily cured resin layer.
  • the substrate 2 is placed on the substrate 1 on which the temporarily cured resin layer is formed so as to be in contact with the temporarily cured resin layer, and in some cases, the substrate 1 and the substrate 2 are pressurized by pressing from the substrate 1 side and / or the substrate 2 side. Can be pasted together.
  • the pressurizing method is not particularly limited, and a rubber roller, a flat plate press device or the like can be used.
  • Process D is a process in which the temporarily cured resin layer between the base material 1 and the base material 2 is further cured by irradiating light.
  • the base material 1 and the base material 2 is a light transmissive member
  • light can be irradiated from the base material side which is a light transmissive member, and this can be hardened.
  • the light is not particularly limited, and active energy rays such as visible light, ultraviolet rays, X-rays, and electron beams can be used, and preferably ultraviolet rays.
  • active energy rays such as visible light, ultraviolet rays, X-rays, and electron beams can be used, and preferably ultraviolet rays.
  • the light irradiation method is not particularly limited.
  • light having an intensity of 10 to 1500 mW / cm 2 can be irradiated so as to have an integrated light amount of 500 to 10000 mJ / cm 2 .
  • the intensity is preferably 100 to 1000 mW / cm 2 , more preferably 200 to 500 mW / cm 2
  • the integrated light amount is preferably 1000 to 6000 mJ / cm 2 , more preferably 1500 to 4500 mJ / cm 2 .
  • Each component of the composition shown in Table 1 was weighed into a polyethylene container and uniformly mixed using a three-one motor (manufactured by Tokyo Science Equipment Co., Ltd., MAZELA) and a stirring blade to prepare a photocurable resin composition.
  • Example 1 A metal squeegee is pasted on a 26mm x 75mm x 1.1mmt glass with a 150 ⁇ m thick spacer created using 3 pieces of cellophane tape (50 ⁇ mt) so that the coated part of the photo-curing resin becomes a 10mm x 10mm square shape. After the photocurable resin composition coating layer was formed using, the spacer was removed (FIG. 1 (1)). Under the temporary curing conditions shown in Table 2, using a mercury xenon lamp (manufactured by HOYA, EXECURE 4000, emission spectrum shown in FIG.
  • ultraviolet irradiation intensity (365 nm) 30 mW / cm 2 (measured by Hamamatsu Photonics) was irradiated to form a temporarily cured resin layer.
  • the integrated value of the irradiation intensity of the wavelength of 300 to 500 nm with respect to the integrated value of the irradiation intensity of all wavelengths is obtained by integrating the emission intensity in the wavelength distribution measurement, it is found to be about 85%.
  • the curing rate of the temporarily cured resin layer was measured by FT-IR (Perkin Elmer, Spectrum 100) as a decrease rate of the acrylic group before and after the ultraviolet irradiation of the photocurable resin composition.
  • the rate of decrease is the absorption peak height (X) of 800 to 820 cm ⁇ 1 from the baseline in the FT-IR measurement chart of the resin composition layer before ultraviolet irradiation, and the FT-IR measurement of the resin composition layer after ultraviolet irradiation.
  • the absorption peak height (Y) of 800 to 820 cm ⁇ 1 from the base line in the chart was determined by substituting into the following formula (1).
  • Curing rate (%) ⁇ (XY) / X ⁇ ⁇ 100 (1)
  • Another 26 mm ⁇ 75 mm ⁇ 1.1 mmt glass was prepared, placed on the glass on which the temporarily cured resin layer was formed so that the temporarily cured resin layer was in contact, and pressed and bonded together (FIG. 1 (2)). ).
  • Example 2 Under the temporary curing conditions shown in Table 3, using a mercury xenon lamp (manufactured by HOYA, EXECURE 4000, emission spectrum is shown in FIG. 2), irradiation with ultraviolet irradiation intensity (365 nm) of 10 mW / cm 2 is performed to perform temporary curing resin A glass laminate was prepared and the tensile strength was measured in the same manner as in Example 1 except that the layer was formed.
  • a laminate in which substrates are bonded to each other with sufficient adhesive force using only a photocuring process, for example, an image display device is provided. high.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Thermal Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention fournit un procédé de fabrication de stratifié selon lequel des matériaux de base sont mis en adhésion entre eux par une force d'adhésion suffisante au moyen seul d'un processus de durcissement photochimique. Ce procédé de fabrication de stratifié inclut : une étape au cours de laquelle une couche d'application est formée sur un matériau de base (1) par application d'une composition de résine photodurcissable ; une étape au cours de laquelle une couche de résine durcie temporairement est formée sur la couche d'application par irradiation à l'aide d'une lumière d'intensité d'irradiation aux ultraviolets inférieure à 100mW/cm2 ; une étape au cours de laquelle un matériau de base (2) est collé sur la couche de résine durcie temporairement ; et une étape au cours de laquelle un durcissement définitif est effectué par irradiation lumineuse de la couche de résine durcie temporairement entre le matériau de base (1) et le matériau de base (2).
PCT/JP2015/072384 2014-08-08 2015-08-06 Procédé de fabrication de stratifié WO2016021692A1 (fr)

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JP6905325B2 (ja) * 2016-10-31 2021-07-21 デクセリアルズ株式会社 積層体の製造方法
JP6538252B1 (ja) * 2018-09-19 2019-07-03 デクセリアルズ株式会社 画像表示装置の製造方法
JP7160745B2 (ja) * 2019-04-15 2022-10-25 デクセリアルズ株式会社 画像表示装置の製造方法

Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH079573A (ja) * 1993-06-29 1995-01-13 Sekisui Finechem Co Ltd 装飾体又は表示体の製造方法
JPH11223819A (ja) * 1998-02-09 1999-08-17 Toshiba Corp 液晶表示装置の製造方法
JP2000288381A (ja) * 1999-04-08 2000-10-17 Kawamura Inst Of Chem Res 微小ケミカルデバイスの製造法
JP2013045755A (ja) * 2011-08-26 2013-03-04 Sekisui Chem Co Ltd 絶縁材料、積層体及び接続構造体
WO2013111810A1 (fr) * 2012-01-25 2013-08-01 デクセリアルズ株式会社 Procédé de fabrication d'un dispositif d'affichage d'image

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Publication number Priority date Publication date Assignee Title
JP2009186957A (ja) * 2007-04-09 2009-08-20 Sony Chemical & Information Device Corp 樹脂組成物及び表示装置
JP5218802B1 (ja) * 2012-11-13 2013-06-26 デクセリアルズ株式会社 画像表示装置の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH079573A (ja) * 1993-06-29 1995-01-13 Sekisui Finechem Co Ltd 装飾体又は表示体の製造方法
JPH11223819A (ja) * 1998-02-09 1999-08-17 Toshiba Corp 液晶表示装置の製造方法
JP2000288381A (ja) * 1999-04-08 2000-10-17 Kawamura Inst Of Chem Res 微小ケミカルデバイスの製造法
JP2013045755A (ja) * 2011-08-26 2013-03-04 Sekisui Chem Co Ltd 絶縁材料、積層体及び接続構造体
WO2013111810A1 (fr) * 2012-01-25 2013-08-01 デクセリアルズ株式会社 Procédé de fabrication d'un dispositif d'affichage d'image

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KR102312162B1 (ko) 2021-10-14
TW201622986A (zh) 2016-07-01
CN106660067A (zh) 2017-05-10
JP2016036780A (ja) 2016-03-22
TWI671205B (zh) 2019-09-11
KR20170039715A (ko) 2017-04-11

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