WO2014155976A1 - インサート成形用加飾フィルム及び加飾インサート成形品 - Google Patents
インサート成形用加飾フィルム及び加飾インサート成形品 Download PDFInfo
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- WO2014155976A1 WO2014155976A1 PCT/JP2014/001150 JP2014001150W WO2014155976A1 WO 2014155976 A1 WO2014155976 A1 WO 2014155976A1 JP 2014001150 W JP2014001150 W JP 2014001150W WO 2014155976 A1 WO2014155976 A1 WO 2014155976A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14688—Coating articles provided with a decoration
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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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
- 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
- B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14688—Coating articles provided with a decoration
- B29C2045/14704—Coating articles provided with a decoration ink decorations
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14688—Coating articles provided with a decoration
- B29C2045/14713—Coating articles provided with a decoration decorations in contact with injected material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2675/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, for preformed parts, e.g. for inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/762—Household appliances
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
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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
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/104—Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/402—Coloured
- B32B2307/4023—Coloured on the layer surface, e.g. ink
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/71—Resistive to light or to UV
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- B32B2307/712—Weather resistant
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2451/00—Decorative or ornamental articles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/14—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
Definitions
- the present invention relates to a decorative film suitable for insert molding, which has a decorative layer made of ultraviolet curable inkjet ink on a film substrate.
- the present invention also relates to an insert molded product using the decorative film.
- Patent Document 4 discloses an ultraviolet curable type containing N-vinylcaprolactam, dicyclopentenyloxyethyl acrylate, bisphenol A type epoxy (meth) acrylate and / or urethane (meth) acrylate. It is described that a high-quality insert-molded product can be obtained by using a resin film decorated with an inkjet ink. However, in the case of Patent Document 4, there is a problem that defects such as cracks in the decorative film are likely to occur after the preforming.
- the present invention has been made in view of such circumstances, and an object of the present invention is to obtain a decorative film for insert molding that is decorated with an ultraviolet curable inkjet ink and exhibits good flexibility during insert molding. To do.
- the present invention includes the following embodiments (1) to (5).
- a decorative film for insert molding having a decorative layer formed of a UV curable inkjet ink on a film substrate, wherein the elongation rate of the decorative film for insert molding is 150 under a condition of 180 ° C. %, And a decorative film for insert molding that is 50% or more at 25 ° C.
- the ultraviolet curable inkjet ink used for the decorative layer is a monofunctional monomer having a glass transition temperature (Tg) of 100 ° C. ⁇ Tg ⁇ 200 ° C., a monofunctional monomer having 0 ° C.
- the decorative film for insert molding according to (1) which contains a monofunctional monomer that is ⁇ 0 ° C., a urethane acrylate oligomer, a photopolymerization initiator, and a colorant.
- the ultraviolet curable ink-jet ink comprises 25 to 45% by mass of the monofunctional monomer satisfying 100 ° C. ⁇ Tg ⁇ 200 ° C., and 2 to 15% by mass of the monofunctional monomer satisfying 0 ° C. ⁇ Tg ⁇ 100 ° C.
- the decorative film for insert molding according to (2) containing 25 to 45% by mass of the monofunctional monomer having Tg ⁇ 0 ° C.
- a decorative insert molded article comprising: the decorative film according to any one of (1) to (4) above; and a resin injection molded body laminated and integrated on one surface of the decorative film. .
- the decorative film for insert molding has a decorative layer made of an ultraviolet curable inkjet ink on a film substrate, has an elongation rate of 150% or more under a 180 ° C. condition, and a 25 ° C. condition.
- the elongation rate of is 50% or more.
- the elongation is preferably 180% or more, more preferably 200% or more under the condition of 180 ° C. Moreover, it is preferable that it is 80% or more on 25 degreeC conditions, More preferably, it is 100% or more. If the elongation at 180 ° C is less than 150%, the decorative layer and the film substrate can be stretched during insert molding (for example, during preliminary molding) in a high-temperature atmosphere using a deeply drawn die.
- the upper limit is not particularly limited. For example, it may be 300% or less at 180 ° C. or 200% or less at 25 ° C.
- the said elongation rate is an elongation rate at the time of a fracture
- polymethacrylates such as a polycarbonate (PC), a polyethylene terephthalate (PET), and a polymethylmethacrylate (PMMA) Acrylonitrile-butadiene-styrene copolymer (ABS), or two or more alloy products thereof.
- PC polycarbonate
- PET polyethylene terephthalate
- PMMA polymethylmethacrylate
- ABS Acrylonitrile-butadiene-styrene copolymer
- those laminated products may be sufficient.
- polycarbonate, polymethacrylate, or alloys thereof are preferable for the ink-jet decorative surface of the film substrate in terms of adhesion between the ink and the film substrate.
- the elongation rate of the film base material itself is 150% or more at 180 ° C.
- the elongation rate of the decorative film is preferably 180% or more, more preferably 200% or more under the condition of 180 ° C, and under the condition of 25 ° C. It is preferably 80% or more, more preferably 100% or more.
- the upper limit of elongation rate is not specifically limited, For example, 300% or less may be sufficient on 180 degreeC conditions, and 200% or less may be sufficient on 25 degreeC conditions.
- the measurement of the elongation rate of film base material itself can be performed by the same method as said decorating film.
- the ultraviolet curable inkjet ink used for the decorative layer has a monofunctional monomer (hereinafter referred to as a high Tg monofunctional monomer) having a glass transition temperature (Tg) of 100 ° C. ⁇ Tg ⁇ 200 ° C., and 0 ° C. ⁇ Tg ⁇ 100.
- a monofunctional monomer hereinafter referred to as a high Tg monofunctional monomer having a glass transition temperature (Tg) of 100 ° C. ⁇ Tg ⁇ 200 ° C., and 0 ° C. ⁇ Tg ⁇ 100.
- a monofunctional monomer (hereinafter referred to as medium Tg monofunctional monomer) having a temperature of °C, a monofunctional monomer having Tg ⁇ 0 ° C (hereinafter referred to as low Tg monofunctional monomer), a urethane acrylate oligomer, a photopolymerization initiator, and a colorant. It is preferable.
- Tg about a monofunctional monomer is a glass transition temperature in the hardened
- Tg can be measured by differential scanning calorimetry (DSC).
- the cured product is prepared by adding 3% by weight of benzyldimethyl ketal to the monofunctional monomer and curing it in an air atmosphere with a metal halide lamp under conditions of peak illuminance of 800 mW / cm 2 and integrated light quantity of 1000 mJ / cm 2. .
- DSC was performed using an RDC220 differential scanning calorimeter manufactured by Seiko Denshi Kogyo Co., Ltd., in a nitrogen stream at a heating rate of 10 ° C./min, and the inflection point of the DSC curve was Tg.
- the Tg of the high Tg monofunctional monomer is preferably 110 to 160 ° C.
- the high Tg monofunctional monomer is preferably a monofunctional acrylate monomer or monofunctional acrylamide monomer having a Tg in the above range.
- dicyclopentenyl acrylate, dicyclopentanyl acrylate, adamantyl acrylate, acryloyl morpholine, dimethyl acrylamide, dimethylaminopropyl acrylamide, and isopropyl acrylamide may be used, and these may be used alone or in combination of two or more. Can do.
- acryloylmorpholine is preferred because it has less odor and skin irritation.
- the high Tg monofunctional monomer is preferably contained in an ultraviolet curable ink-jet ink in an amount of 25 to 45% by mass, more preferably 35 to 45% by mass.
- the content is 25% by mass or more, the elongation percentage of the decorative layer under the condition of 180 ° C. can be improved.
- the content is 45% by mass or less, a decrease in the elongation rate of the decorative layer under 25 ° C. is suppressed, and the decorative layer and the film substrate are cracked after pre-molding or insert molding. Can be avoided.
- the Tg of the medium Tg monofunctional monomer is preferably 30 to 100 ° C.
- the medium Tg monofunctional monomer is preferably a monofunctional acrylate monomer having Tg in the above range.
- Examples include isobornyl acrylate, 4-tert-butylcyclohexanol acrylate, 2-phenoxyethyl acrylate, stearyl acrylate, acryloyloxyethyl hexahydrophthalimide, and 2-hydroxy-3-phenoxypropyl acrylate. Any one type or a combination of two or more types can be used. Of these, isobornyl acrylate is preferred because of its low viscosity and low odor.
- the Tg monofunctional monomer is preferably contained in the ultraviolet curable inkjet ink in an amount of 2 to 15% by mass, more preferably 2 to 10% by mass.
- the content is in the range of 2 to 15% by mass, it becomes easy to achieve both the elongation of the decorative layer under the condition of 180 ° C. and the elongation of the decorative layer under the condition of 25 ° C.
- the lower limit of the Tg of the low Tg monofunctional monomer is not particularly limited, and for example, it is preferably ⁇ 60 ° C. or higher, more preferably ⁇ 30 ° C. or higher.
- the low Tg monofunctional monomer is preferably a monofunctional acrylate monomer having a Tg in the above range.
- examples thereof include acrylate 2- (N-butylcarbamate), and these can be used alone or in combination of two or more.
- (2-methyl-2-ethyl-1,3-dioxolan-4-yl) methyl acrylate is preferred from the viewpoint of low viscosity, low odor, and relatively high reactivity.
- the low Tg monofunctional monomer is preferably contained in an ultraviolet curable ink-jet ink in an amount of 25 to 45% by mass, more preferably 35 to 45% by mass.
- the content is 25% by mass or more, the elongation rate of the decorative layer under the condition of 25 ° C. can be improved, and the decorative layer and the film substrate can be made difficult to break after preforming or insert molding. .
- the fall of the elongation rate of a decoration layer under 180 degreeC conditions can be suppressed because content is 45 mass% or less.
- an aliphatic bifunctional urethane acrylate oligomer is preferably used as the urethane acrylate oligomer used in the ultraviolet curable inkjet ink.
- Specific examples include EB8411, EB8413, KRM7735, manufactured by Daicel-Cytec, Inc., Beamset 504H, Beamset 505A-6, manufactured by Arakawa Chemical Industries, Ltd., CN959, CN966, CN9290, manufactured by Arkema Corporation. can give.
- the urethane acrylate oligomer is preferably contained in the ultraviolet curable ink-jet ink in an amount of 5 to 15% by mass, more preferably 5 to 12% by mass.
- the content is 5% by mass or more, the strength of the decorative layer can be improved, and the decorative layer and the film substrate can be made difficult to break after pre-molding or insert molding. Decrease in solvent property can be suppressed.
- the content exceeds 15% by mass, the ink viscosity becomes high, and there is a possibility that it is difficult to discharge with an inkjet decoration device.
- the urethane acrylate oligomer preferably has a coating film modulus of 5 to 50 MPa, more preferably 5 to 30 MPa under 25 ° C. conditions.
- the coating film elastic modulus being 5 MPa or more, the strength of the decorative layer can be improved, and the decorative layer and the film substrate can be made difficult to break after preforming or insert molding.
- the fall of the elongation rate of a decoration layer under 180 degreeC conditions can be suppressed because it is 50 Mpa or less.
- a coating-film elastic modulus means the coating-film elastic modulus at the time of forming the said urethane acrylate oligomer into a coating film.
- a liquid prepared by mixing urethane acrylate oligomer and Irgacure 184 (manufactured by BASF Japan Ltd. photo radical polymerization initiator) at 100: 5 (mass ratio) was applied at a film thickness of 125 ⁇ m using an applicator.
- the elastic modulus After processing to form a coating film by irradiating with a peak illuminance of 500 mW / cm 2 and an integrated light amount of 800 mJ / cm 2, the elastic modulus is measured at a tensile speed of 200 mm / min with an autograph after being cut into a strip shape. Can be obtained.
- the details of the elastic modulus measurement conform to JIS K7161.
- various reactive diluents can be added within a range that does not affect the elongation rate of the decorative layer.
- bifunctional or more polyfunctional acrylate as another reactive diluent, it is preferable that it is 5 mass% or less in an ultraviolet curable inkjet ink, and it is more preferable that it is 2 mass% or less.
- Bifunctional or higher polyfunctional acrylates tend to decrease the flexibility of the decorative layer as the content increases. When content is 5 mass% or less, the influence with respect to the elongation rate of a decoration layer can be suppressed.
- the photopolymerization initiator used in the ultraviolet curable inkjet ink is preferably a photoradical polymerization initiator.
- the radical photopolymerization initiator include benzoin-based, thioxanthone-based, benzophenone-based, ketal-based, and acetophenone-based, and these can be used alone or in combination of two or more.
- the content of the photopolymerization initiator is preferably 3 to 15% by mass, and more preferably 5 to 12% by mass with respect to the total amount of the ultraviolet curable inkjet ink.
- the content is 3% by mass or more, polymerization can proceed and the decorative layer can be sufficiently cured.
- content of a photoinitiator exceeds 15 mass%, the improvement of the cure rate or the cure speed beyond it cannot be expected, but it becomes high cost.
- a coloring agent used for the said ultraviolet curable inkjet ink When a weather resistance and light resistance are calculated
- Organic pigments include, for example, nitroso, dyed lakes, azo lakes, insoluble azos, monoazos, disazos, condensed azos, benzimidazolones, phthalocyanines, anthraquinones, perylenes, quinacridones, dioxazines , Isoindolines, azomethines, pyrrolopyrroles, and the like, which can be used alone or in combination of two or more.
- Inorganic pigments include oxides, hydroxides, sulfides, ferrocyanides, chromates, carbonates, silicates, phosphates, carbons (carbon black), metal powders, etc. Any of these may be used alone or in combination of two or more.
- the content of the colorant in the ultraviolet curable ink-jet ink is preferably 0.01 to 10% by mass, and more preferably 0.05 to 5% by mass. If the content of the colorant is less than 0.01% by mass, sufficient coloring may not be performed. On the other hand, if it exceeds 10% by mass, there is a possibility that ejection failure may occur during ink-jet decoration and ink curing failure may occur.
- the weather resistance and light resistance are not so important, it is possible to use a dye, and the dye at that time is not particularly limited, and an arbitrary one is selected.
- the dye examples include oil-soluble dyes such as azos, anthraquinones, indigoids, phthalocyanines, carboniums, quinoneimines, methines, xanthenes, nitros, nitrosos, disperse dyes, acid dyes, reactive dyes , Cationic dyes and direct dyes.
- oil-soluble dyes such as azos, anthraquinones, indigoids, phthalocyanines, carboniums, quinoneimines, methines, xanthenes, nitros, nitrosos, disperse dyes, acid dyes, reactive dyes , Cationic dyes and direct dyes.
- a dispersant may be added to the ultraviolet curable ink-jet ink as necessary.
- the dispersant is preferably a polymer type, and more preferably has an acidic adsorbing group or a basic adsorbing group at the terminal.
- the addition amount of the dispersant is preferably 0.01 to 1%, more preferably 0.1 to 0.5%, based on the mass of the colorant to be added. If it is less than 0.01%, a sufficient dispersion effect may not be obtained. On the other hand, if it exceeds 1%, the viscosity of the ink is increased, and there is a possibility that ejection failure may occur during ink-jet decoration.
- the ultraviolet curable ink-jet ink includes additives such as a light stabilizer, an ultraviolet absorber, a heat stabilizer, an antioxidant, an antiseptic, a pH adjuster, an antifoaming agent, a penetrating agent, and a slip agent. It is also possible to add. Further, an auxiliary agent such as a sensitizer can be used in combination in order to promote the initiation reaction of the photo radical polymerization initiator.
- the ultraviolet curable ink-jet ink preferably has a viscosity of 5 to 20 cps (centipoise) at 60 ° C., that is, 5 to 20 mPa ⁇ s, more preferably 10 to 15 cps. If the viscosity is less than 5 cps or more than 20 cps, there is a risk of poor ejection during ink jet decoration.
- the ultraviolet curable inkjet ink can be applied by a known inkjet decoration device.
- an inkjet decoration device there are a continuous method such as a charge modulation method, a micro dot method, a charge ejection control method, an ink mist method, an on-demand method such as a piezo method, a bubble jet (registered trademark) method, and an electrostatic suction method. Any of them can be adopted.
- the ink application amount is preferably 1 to 150 g / m 2 , more preferably 5 to 100 g / m 2 .
- the ink application amount is preferably 1 to 150 g / m 2 , more preferably 5 to 100 g / m 2 .
- it is 1 g / m 2 or more, sufficient coloring can be expressed, and when it is 150 g / m 2 or less, deterioration of moldability of the decorative film can be suppressed.
- the curing conditions of the ultraviolet curable inkjet ink may be appropriately selected from known techniques.
- a coating layer may be provided as long as the stretchability is not affected in order to impart further functionality, design and adhesion from the upper part of the ultraviolet curable inkjet ink layer. What is necessary is just to select a coating method and a coating material from a well-known technique suitably.
- FIG. 1 schematically shows a cross-sectional structure of a decorative film (1) according to an embodiment.
- the decorative film (1) includes a decorative layer (3) made of an ultraviolet curable inkjet ink on one surface of the film substrate (2).
- a synthetic resin layer such as a protective layer may be provided on the decorative layer (3), and a base layer or the like is synthesized between the decorative layer (3) and the base film (2).
- a resin layer may be provided, and a synthetic resin layer such as an adhesive layer may be provided on the back surface of the base film (1).
- the decoration layer (3) was shown as a layer which continued to the whole one side of a film base material (2), a decoration layer (3) is a film base material (2) as a discontinuous layer. ) May be partially provided on one side.
- the insert molding using the decorative film can be performed by a known insert molding method.
- the first step is preforming in advance by vacuum forming or pressure forming, and then injection molding is performed using the pre-decorated decorative film in the second step.
- Pre-molding refers to molding a decorative film in a shape close to the final product before injection molding, and is also referred to as pre-shaping.
- FIG. 2 shows an example of a preformed decorative film (1).
- a known device can be used, which may be a device integrated with the ink jet decorating device or another device. .
- vacuum forming or pressure forming is performed, and the vacuum / pressure forming is included in these.
- vacuum forming is a method in which a decorative film is preheated to a temperature at which it can be thermally deformed in advance, and this is sucked into a mold by decompression and stretched while being pressed and cooled to the mold.
- the pressure forming is a method in which the decorative film is preheated to a temperature at which it can be thermally deformed in advance, pressed from the opposite side of the mold, and then compressed and cooled on the mold.
- Vacuum / pressure forming is a method in which the pressure reduction and pressurization are performed simultaneously.
- Injection molding in insert molding can be performed using a known molding machine.
- the pre-decorated decorative film (1) is placed in the injection mold (10), the mold (10) is closed, and then melted through the gate portion (11). Resin is injected into the cavity. Thereby, the resin injection molding can be laminated and integrated on one surface of the decorative film (1).
- FIG. 4 shows an example of a decorative insert molded product (5) obtained in this way.
- the decorative insert molded product (5) includes a decorative film (1) and a resin injection molded body (6) laminated and integrated on one surface thereof.
- the decorative layer (3) is provided on the front surface of the base film (2) so that the decorative layer (3) is on the front side of the molded product, and the back surface of the base film (2) is provided.
- a resin injection molded body (6) is provided.
- the resin injection molded body (6) is provided on the surface of the decorative film (1) where the decorative layer (3) is provided so that the base film (2) is on the front side of the molded product. ) May be laminated and integrated.
- the decorative insert molded product is not particularly limited.
- the decorative insert molded product may be used as a part of a housing of various electrical appliances such as home appliances and communication devices, or as an interior part of a vehicle such as an automobile. it can.
- each material was mixed with a mixer, then dispersed for 3 minutes with a bead mill, and filtered to obtain an ultraviolet curable inkjet ink.
- Viscosity measurement method the viscosity was measured using a B-type viscometer: Viscoblock Model VTB-250 (manufactured by Toki Sangyo Co., Ltd.) under the condition of 60 ° C. and the rotational speed of the rotor of 60 rpm.
- UV curing for polycarbonate film (Iupilon NF-2000 manufactured by Mitsubishi Gas Chemical Co., Inc., thickness: 0.5 mm, elongation at 180 ° C .: 240%, elongation at 25 ° C .: 120%)
- Type inkjet ink was applied using an inkjet decorating device.
- the application conditions and curing conditions of the ultraviolet curable inkjet ink were set as follows.
- ⁇ Granting conditions Head heating temperature 60 ° C Nozzle diameter 70 ⁇ m Applied voltage 50V Pulse width 20 ⁇ s Drive frequency 5kHz Resolution 360 x 720 dpi Ink application amount 50 g / m 2 5mm x 5mm lattice pattern ⁇ Curing conditions> Lamp type Metal halide lamp Output 80W / cm Irradiation time 0.3 seconds x 4 irradiations Irradiation height 10 mm At this time, the peak illuminance was 800 mW / cm 2 and the integrated light quantity was 1000 mJ / cm 2 .
- Example 1 The decorative film of Example 1 was obtained by the above process. Table 1 shows the elongation percentage of the obtained decorative film under each temperature condition.
- KRM7735 Aliphatic urethane acrylate oligomer manufactured by Daicel Cytec Co., Ltd.
- EB8804 Aliphatic urethane acrylate oligomer manufactured by Daicel Cytec Co., Ltd.
- M-140 N-acryloyloxyethyl hexahydrophthalimide manufactured by Toagosei Co., Ltd.
- ⁇ V # 150 Tetrahydrofurfuryl acrylate, FA-511AS, manufactured by Osaka Organic Chemical Industry Co., Ltd .: Dicyclopentenyl acrylate, manufactured by Hitachi Chemical Co., Ltd. SR217: 4-tert-butylcyclohexanol acrylate, manufactured by Arkema Co., Ltd.
- the decorative films of Examples 1 to 6 were all excellent in flexibility at the time of preforming and flexibility after the preforming. Therefore, the decorative films of Examples 1 to 6 are excellent in both flexibility during insert molding and flexibility after insert molding.
- the decorative film of Comparative Example 1 was excellent in flexibility after pre-forming, but the decorative layer did not follow the film substrate during pre-forming, and the decorative layer was cracked.
- the decorative film of Comparative Example 2 had good flexibility at the time of preforming, but was inferior in flexibility after the preforming.
- the decorative film of Comparative Example 3 was inferior in flexibility at the time of preforming.
- the decorative film according to the present invention can be suitably used as a film for decorating the surface of various synthetic resin molded products.
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Abstract
Description
(1)フィルム基材上に紫外線硬化型インクジェットインクにより形成された加飾層を有するインサート成形用加飾フィルムであって、該インサート成形用加飾フィルムの伸び率が、180℃条件下で150%以上、かつ25℃条件下で50%以上である、インサート成形用加飾フィルムである。
(2)前記加飾層に用いる紫外線硬化型インクジェットインクが、ガラス転移温度(Tg)が100℃<Tg≦200℃である単官能モノマー、0℃<Tg≦100℃である単官能モノマー、Tg≦0℃である単官能モノマー、ウレタンアクリレートオリゴマー、光重合開始剤、および着色剤を含有する、(1)に記載のインサート成形用加飾フィルムである。
(3)前記紫外線硬化型インクジェットインクが、前記100℃<Tg≦200℃である単官能モノマーを25~45質量%、前記0℃<Tg≦100℃である単官能モノマーを2~15質量%、前記Tg≦0℃である単官能モノマーを25~45質量%、前記ウレタンアクリレートオリゴマーを5~15質量%、それぞれ含有する、(2)に記載のインサート成形用加飾フィルムである。
(4)前記ウレタンアクリレートオリゴマーの塗膜弾性率が、25℃条件下で5~50MPaである、(2)または(3)に記載のインサート成形用加飾フィルムである。
(5)上記(1)~(4)のいずれかに記載の加飾フィルムと、前記加飾フィルムの一方面に積層一体化された樹脂射出成形体と、を備える加飾インサート成形品である。
まず、下記処方に従い、各材料をミキサーにて混合後、ビーズミルにて3分間分散を実施し、ろ過することにより、紫外線硬化型インクジェットインクを得た。
<紫外線硬化型インクジェットインク処方>
MEDOL-10 42質量%
(大阪有機化学工業(株)製(2-メチル-2-エチル-1,3-ジオキソラン-4-イル)メチルアクリレート;低Tg単官能モノマー)
ACMO 35質量%
(興人(株)製アクリロイルモルフォリン;高Tg単官能モノマー)
IBXA 4.5質量%
(共栄社化学(株)製 イソボルニルアクリレート;中Tg単官能モノマー)
IRGALITE BLUE GLNF 2質量%
(チバスペシャルティケミカルズ(株)製 顔料 銅フタロシアニン)
フローレンDOPA-33 1質量%
(共栄社化学(株)製 分散剤 変性アクリル系共重合物)
Ebecryl8411 7質量%
(ダイセルサイテック(株)製 脂肪族ウレタンアクリレートオリゴマー)
Irgcure184 5質量%
(BASFジャパン(株)製 光ラジカル重合開始剤 1-ヒドロキシ-シクロへキシル-フェニル-ケトン)
LucirinTPO 3質量%
(BASFジャパン(株)製 光ラジカル重合開始剤 2,4,6-トリメチルベンゾイル-ジフェニル-フォスフィンオキサイド)
BYK-UV3570 0.5質量%
(ビックケミー・ジャパン(株)製 スリップ剤 アクリル基を有するポリエステル変性ポリジメチルシロキサン)
本実施例における粘度測定は、B型粘度計:Viscoblock Model VTB-250(東機産業(株)製)を用い、60℃条件下で、ローターの回転数60rpmで粘度測定を行った。
<付与条件>
ヘッド加熱温度 60℃
ノズル径 70μm
印加電圧 50V
パルス幅 20μs
駆動周波数 5kHz
解像度 360×720dpi
インク付与量 50g/m2
柄 5mm×5mm格子柄
<硬化条件>
ランプ種類 メタルハライドランプ
出力 80W/cm
照射時間 0.3秒×4回照射
照射高さ 10mm
このときピーク照度800mW/cm2、積算光量1000mJ/cm2であった。
・KRM7735:ダイセルサイテック(株)製 脂肪族ウレタンアクリレートオリゴマー
・EB8804:ダイセルサイテック(株)製 脂肪族ウレタンアクリレートオリゴマー
・M-140:東亜合成(株)製 N-アクリロイルオキシエチルヘキサヒドロフタルイミド
・V#150:大阪有機化学工業(株)製 テトラヒドロフルフリルアクリレート
・FA-511AS:日立化成工業(株)製 ジシクロペンテニルアクリレート
・SR217:アルケマ(株)製 4-tert-ブチルシクロヘキサノールアクリレート
実施例および比較例の加飾フィルムについて、下記方法により真空成形にて予備成形を実施した。真空成形装置フォーミング300X(成光産業(株)製)を用い真空成形を行った。加飾フィルム表面の温度が180℃になるようにヒーターの温度を設定し、真空テーブルの中心に縦6cm×横10cm×高さ6cmの金属型を設置し真空成形を行った。その後、成形品の加飾層およびフィルム基材の状態を目視で確認し、下記基準に基づいて評価した。
○:加飾層、フィルム基材ともに割れなどの不具合が認められない
△:加飾層、フィルム基材のいずれか一方に割れなどの不具合が認められる
×:加飾層、フィルム基材ともに割れなどの不具合が認められる
予備成形時評価で記載した内容と同じ条件で真空成形した後の加飾フィルムに対し、下記方法により柔軟性を評価した。
JIS K5600 5-1に従い、円筒形マンドレル法による耐屈曲性試験を実施した。マンドレルの直径は5mmとした。その後、成形品の加飾層およびフィルム基材の状態を目視で確認し、下記基準に基づいて評価した。下記評価項目における「不具合」は、耐屈曲性試験で発生した不具合であり、予備成形時に生じた不具合は除いて評価した。
(評価項目)
○:180°折り曲げても、加飾フィルムに割れなどの不具合が認められない
△:90°折り曲げても、加飾フィルムに割れなどの不具合が認められないが、180°折り曲げると不具合が見られる。
×:90°折り曲げると、加飾フィルムに割れなどの不具合が認められる。
Claims (5)
- フィルム基材上に紫外線硬化型インクジェットインクにより形成された加飾層を有するインサート成形用加飾フィルムであって、該インサート成形用加飾フィルムの伸び率が、180℃条件下で150%以上、かつ25℃条件下で50%以上である、インサート成形用加飾フィルム。
- 前記加飾層に用いる紫外線硬化型インクジェットインクが、ガラス転移温度(Tg)が100℃<Tg≦200℃である単官能モノマー、0℃<Tg≦100℃である単官能モノマー、Tg≦0℃である単官能モノマー、ウレタンアクリレートオリゴマー、光重合開始剤、および着色剤を含有する、請求項1に記載のインサート成形用加飾フィルム。
- 前記紫外線硬化型インクジェットインクが、前記100℃<Tg≦200℃である単官能モノマーを25~45質量%、前記0℃<Tg≦100℃である単官能モノマーを2~15質量%、前記Tg≦0℃である単官能モノマーを25~45質量%、前記ウレタンアクリレートオリゴマーを5~15質量%、それぞれ含有する、請求項2に記載のインサート成形用加飾フィルム。
- 前記ウレタンアクリレートオリゴマーの塗膜弾性率が、25℃条件下で5~50MPaである、請求項2または3に記載のインサート成形用加飾フィルム。
- 請求項1~4のいずれか1項に記載の加飾フィルムと、前記加飾フィルムの一方面に積層一体化された樹脂射出成形体と、を備える加飾インサート成形品
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JP2015508000A JP6335881B2 (ja) | 2013-03-28 | 2014-03-03 | インサート成形用加飾フィルム及び加飾インサート成形品 |
MX2015013606A MX2015013606A (es) | 2013-03-28 | 2014-03-03 | Pelicula decorativa para moldeo por insercion y articulo decorativo moldeado por insercion. |
US14/779,711 US9546255B2 (en) | 2013-03-28 | 2014-03-03 | Decorative film for insert molding and decorative insert molded article |
CN201480018659.8A CN105073415B (zh) | 2013-03-28 | 2014-03-03 | 嵌入成型用装饰薄膜和装饰嵌入成型品 |
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JP6335881B2 (ja) | 2018-05-30 |
US20160046777A1 (en) | 2016-02-18 |
MX2015013606A (es) | 2016-01-12 |
CN105073415B (zh) | 2017-04-12 |
US9546255B2 (en) | 2017-01-17 |
JPWO2014155976A1 (ja) | 2017-02-16 |
CN105073415A (zh) | 2015-11-18 |
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