WO2005051660A1 - 加飾シート、加飾樹脂成形品及びその製造方法 - Google Patents
加飾シート、加飾樹脂成形品及びその製造方法 Download PDFInfo
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- WO2005051660A1 WO2005051660A1 PCT/JP2004/017493 JP2004017493W WO2005051660A1 WO 2005051660 A1 WO2005051660 A1 WO 2005051660A1 JP 2004017493 W JP2004017493 W JP 2004017493W WO 2005051660 A1 WO2005051660 A1 WO 2005051660A1
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- WO
- WIPO (PCT)
- Prior art keywords
- decorative sheet
- decorative
- resin molded
- resin
- base film
- Prior art date
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Classifications
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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
- B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
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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
- 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
- B29C45/14778—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 the article consisting of a material with particular properties, e.g. porous, brittle
- B29C45/14811—Multilayered articles
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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
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/10—Applying flat materials, e.g. leaflets, pieces of fabrics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
- B44C3/04—Modelling plastic materials, e.g. clay
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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
- B29C45/14065—Positioning or centering articles in the mould
- B29C2045/14155—Positioning or centering articles in the mould using vacuum or suction
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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- 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
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1043—Subsequent to assembly
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- 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
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/11—Methods of delaminating, per se; i.e., separating at bonding face
- Y10T156/1142—Changing dimension during delaminating [e.g., crushing, expanding, warping, etc.]
- Y10T156/1147—Using shrinking or swelling agent during delaminating
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- 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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
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- 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]
- Y10T428/31786—Of polyester [e.g., alkyd, etc.]
Definitions
- the present invention relates to a decorative sheet, a decorative resin molded product, and a method for producing the same. More specifically, the present invention relates to a decorative sheet suitable for a decorative resin molded article molded by the simultaneous injection molding decorative method, and a decorative resin molded article (laminate) obtained using the decorative sheet. Or a transfer molded article), and a method for efficiently producing the decorative resin molded article.
- Background art
- simultaneous injection molding and decorating method is often used for decorating a resin molded body having a complicated surface shape such as a three-dimensional curved surface (for example, see Patent Documents 1 and 2).
- This simultaneous injection molding decoration method is to integrate the decorative sheet inserted into the mold during injection molding with the molten resin injected into the cavity and decorate the surface of the resin molded body.
- This method can be generally classified into a laminate decoration method and a transfer decoration method, depending on the difference in the configuration of the decorative sheet integrated with the resin molded article.
- the laminate decorating method all layers of the decorative sheet having a base film and a decorative layer provided thereon are laminated and integrated on the surface of the resin molded body, A laminated decorative sheet (laminated sheet) is used as the caro decorative sheet.
- a laminated decorative sheet laminated sheet
- the transfer caro decoration method only the base film of the decorative sheet laminated and integrated on the surface of the resin molded article is removed, and only the transfer layer such as a decorative layer is formed on the resin molded article. The transfer sheet is used as a decorative sheet.
- FIGS. 4 and 5 are explanatory views showing an example of a molding process in the simultaneous injection molding and decorating method.
- the simultaneous injection molding and decorating apparatus 60 includes a female mold 70 and a side of the female mold 70. And a male mold 80 that is disposed opposite to the mold.
- the female mold 70 is provided with a cavity 72 corresponding to the outer shape of the molded body to be obtained, and an intake hole 74 opened in the cavity 72 is provided therein. It moves forward and backward in the direction approaching and separating from the male mold 80.
- the male mold 80 has a core portion 82 inserted into the cavity 72, and a gate 84 for injecting molten resin is provided therein.
- a hot platen 90 is provided between the female mold 70 and the male mold 80 so as to be able to advance and retreat as required.
- a decorative sheet 100 is arranged to face the side of the female mold 70, and the decorative sheet 100 is subjected to the heat treatment as necessary.
- the sheet 90 is heated and softened at an appropriate temperature, and then the decorative sheet 100 is sandwiched between the female mold 70 and the hot platen 90 to close the opening of the cavity 72.
- a vacuum is drawn through 74 and, if desired, compressed air is supplied through a vent hole provided in the hot platen 90.
- Both molds are usually heated to about 30-50 ° C!
- the decorative sheet 100 is stretched and adhered along the inner peripheral surface of the cavity 72.
- This step is generally called preforming and usually stretches the softened sheet up to about 200%.
- the hot platen 90 is retracted, and the female mold 70 is moved forward as shown in FIG. 5 so that the female mold 70 is combined with the male mold 80 and the mold is clamped.
- Perform injection molding by injecting and filling a flowing resin molding material P into the cavity space formed between the mold 80 and the gate 84 provided in the male mold 80.
- the decorative sheet 100 in the female mold 70 is adhered to the injected resin in an integrated manner.
- the decorative sheet 100 is adhered from the inside of the mold to the outer surface.
- the attached compact is taken out.
- decoration is performed by peeling off only the base film of the decorative sheet 100 integrated with the outer surface of the molded body and leaving a transfer layer such as a decorative layer on the molded body side as a transfer layer. Complete.
- the decorative sheet 100 can be stretched and adhered along the inner peripheral surface of the cavity 72 at the time of preliminary molding or injection of molten resin (formability). At this time, it is preferable that the decorative sheet is not deformed by being stretched more than the minimum amount necessary for conforming to the mold shape by the action of vacuum pressure or by the tension of the molten resin due to the pressure or shear stress. This is an important requirement for obtaining a molded product. This is also the case when the decorative sheet is used as a laminate sheet. Particularly in molding such as using a mold having a deep depth, it is important because the decorative sheet is deeply drawn. Requirements.
- the base sheet of the decorative sheet has a thickness force of 50-250 / zm and a stress force of 200-70 kgfZcm 2 (196-686 NZcm 2 ) at 200% elongation at 100 ° C. Is preferred.
- the above technique uses a film made of a (meth) acrylate copolymer as a base material film of a decorative sheet.
- the base film was difficult to peel (transfer failure) because the adhesiveness with the transfer layer (decorative layer) composed of the ink layer was too good.
- the advantage is that the substrate film is not easily peeled off, but on the other hand, the solvent resistance and contamination resistance of the substrate film, which should function as a surface protective layer, are poor. The problem is enough It was.
- Patent Document 1 Japanese Patent Publication No. 50-132
- Patent Document 2 Japanese Patent Publication No. 61-17255
- Patent Document 3 JP-A-8-276544
- the present invention is suitable for a decorative resin molded article molded by the simultaneous injection molding and decorating method, that is, it has good followability to the die molding surface in preforming.
- a decorative sheet that is unlikely to cause wrinkles, floating, damage, etc.
- a decorative resin molded article laminate obtained using this decorative sheet.
- a transfer molded product a method for efficiently producing the decorative resin molded product.
- the present inventors have conducted intensive studies to achieve the above object, and as a result, as a base film of a decorative sheet, a thermoplastic polyester resin having a specific property, particularly a polyethylene terephthalate resin was used as a material.
- a decorative sheet suitable for the purpose can be obtained by using a material which can be used, and by using this decorative sheet, the quality of the decorative sheet laminated and integrated on the resin molded article can be obtained. It has been found that a good decorative resin molded product (laminated or transfer molded product) can be easily obtained, and that the decorative resin molded product can be efficiently manufactured by performing a specific process. Was.
- the present invention has been completed based on strong knowledge.
- the present invention provides:
- the decorative sheet is characterized in that it does not break even if it is displaced in the direction of flow (in the direction perpendicular to the MD) and TD (in the direction perpendicular to the MD), and has a stress of 20 NZcm 2 or less in either the MD or the TD.
- thermoplastic polyester resin as a base film material is a polyethylene terephthalate resin.
- a decorative resin molded article manufacturing method characterized by sequentially applying
- a method for producing a decorative resin molded product characterized by sequentially applying
- a decorative resin molded product molded by a simultaneous injection molding decoration method is used.
- it has good followability to the molding surface of the mold in the preliminary molding, and is hardly wrinkled, floated, damaged, etc. when it is laminated and integrated with the resin molding in the injection molding.
- a decorative sheet can be provided.
- the injection molding simultaneous decoration method using the decorative sheet it is possible to provide a decorative resin molded product (laminate or transfer molded product) having good quality. That is, when the thermoplastic polyester resin is selected as the base film, the peeling property from the transfer layer when used as the form of the transfer sheet is higher than that of the (meth) acrylate copolymer film. Transferability), and when used in the form of a laminate sheet, the solvent resistance and stain resistance are good.
- FIG. 1 is a cross-sectional view showing one example of a configuration of a decorative sheet of the present invention.
- FIG. 2 is a partial cross-sectional view showing one example of a configuration of a decorative resin molded product of the present invention.
- FIG. 3 is a sectional view of a female mold used in Examples and Comparative Examples.
- FIG. 4 is an explanatory view showing a part of an example of a molding step in the simultaneous injection molding and decorating method.
- FIG. 5 is an explanatory view showing a part of an example of a molding step in the simultaneous injection molding and decorating method. Explanation of symbols
- the decorative sheet of the present invention has a decorative layer on a base film made of a thermoplastic polyester resin, and in a decorative resin molded product formed by the simultaneous injection molding and decorating method described below, It has good transferability when used as a transfer sheet and good solvent resistance and stain resistance on the surface when used as a laminate sheet, and is suitably used for decoration.
- the decorative sheet is used for decorating a resin molded body formed by the simultaneous injection molding and decorating method, it has good followability to the mold forming surface in the preliminary molding, and the decorative sheet is formed by injection molding. It is required to have wrinkle, float, breakage, etc. when laminated and integrated with the resin molded body.
- the decorative sheet elongates at a maximum of about 180-200% in elongation.
- the temperature applied to the decorative sheet is about 70 to 80 ° C. in the preforming step and the injection molding step, the decorative sheet has the above properties.
- the base film used for the decorative sheet should be MD (flow direction during film formation) and TD (direction perpendicular to MD) at an elongation of 200% at a temperature of 80 ° C. ) In the wrong! It does not break even when it is broken, and it is required that the stress is 20 N / cm 2 or less at the deviation of MD and TD, preferably 15 N / cm 2 or less, more preferably 10 N / cm 2 or less.
- the decorative sheet having good moldability can sufficiently satisfy the above-mentioned required performance.
- the formability of the base film is too good, the base film will expand and contract in other steps, such as the heating and drying step after printing, causing deformation of the decorative sheet and misregistration of multicolor printing. This can lead to undesirable situations. Therefore, at an elongation of 200% at a temperature of 80 ° C, the lower limit of the stress in either MD or TD is preferably about 5 NZcm 2 .
- the MD and TD stresses at an elongation of 200% are values measured under the following conditions.
- the thickness of the substrate film is not particularly limited, but is usually about 20 to 500 ⁇ m for a laminate sheet, and about 20 to 150 ⁇ m for a transfer sheet.
- thermoplastic polyester resin which is a material of the base film, has excellent mechanical properties such as transparency and rigidity, and has a crystallinity (glass transition temperature) due to modification and stretching. ) Can be easily controlled, and polyethylene terephthalate-based resin is preferred from the viewpoint of economy and the like.
- the type of the polyethylene terephthalate resin a simple substance or a mixture of two or more kinds can be used without particular limitation as long as a base film having the above properties can be obtained.
- ordinary polyethylene terephthalate (PET) has high crystallinity and a glass transition temperature of about 81 ° C.
- the modified polyethylene terephthalate include the following dicarboxylic acid-modified polyethylene terephthalate, glycol-modified polyethylene terephthalate, and dicarboxylic acid / glycol-modified polyethylene terephthalate.
- the dicarboxylic acid-modified polyethylene terephthalate is obtained by modifying a part of the terephthalic acid unit, which is a constituent unit of polyethylene terephthalate, by replacing it with another dicarboxylic acid unit.
- the dicarboxylic acid forming the other dicarboxylic acid unit include, for example, isophthalic acid, naphthalenedicarboxylic acid, diphenyl sulfone dicarboxylic acid, diphenyl dicarboxylic acid, diphenyl ether dicarboxylic acid, diphenyl ketone dicarboxylic acid, and the like.
- Aromatic dicarboxylic acids alicyclic dicarboxylic acids such as 1,4-cyclohexanedicarboxylic acid; aliphatic dicarboxylic acids such as adipic acid, azelaic acid, dimer acid, and hydrogenated dimer monoacid; These dicarboxylic acids other than terephthalic acid may be used alone or in a combination of two or more.
- the content ratio of the terephthalic acid unit and the other dicarboxylic acid unit in the dicarboxylic acid constituent unit is not particularly limited, but is usually 25: 75—99: 1 in molar ratio. , Preferably in the range of 60: 40-90: 10.
- Preferred examples of the dicarboxylic acid-modified polyethylene terephthalate include isophthalic acid-modified polyethylene terephthalate.
- glycol-modified polyethylene terephthalate is modified by replacing part of the ethylene glycol unit, which is a structural unit of polyethylene terephthalate, with another dalicol unit.
- the glycols forming the other dalicol units include, for example, 1,4-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanediol, 1,3-cyclohexanediol, Alicyclic diols such as norbornene dimethanol and tricyclodecane dimethanol; neopentyl glycol, 1,3 propanediol, 1,4 butanediol, 1,5 pentanediol, 1,6-hexanediol, 1, 7 Aliphatic diols such as heptanediol, 1,8-octanediol, 1,9-nonanediol, 1,10-
- the content ratio of the ethylene glycol unit and the other dalicol unit in the glycol structural unit is not particularly limited,
- glycol-modified polyethylene terephthalate is 1,4-cyclohexanedimethanol-modified polyethylene terephthalate, which is commercially available from Eastman Chemical Company as "KODAR PETG" (trade name).
- dicarboxylic acid Glycol-modified polyethylene terephthalate is a type of polyethylene terephthalate in which part of the terephthalic acid unit, which is a constituent unit of polyethylene terephthalate, is replaced with another dicarboxylic acid unit, and another constituent unit, an ethylene glycol unit, is used. It has been modified by replacing a part with another glycol unit.
- dicarboxylic acid forming the other dicarboxylic acid unit include the same dicarboxylic acids as those exemplified in the above description of the dicarboxylic acid-modified polyethylene terephthalate. These dicarboxylic acids other than terephthalic acid may be used alone or in a combination of two or more.
- examples of the glycol that forms the other dalicol units include the same glycols as those exemplified in the description of the glycol-modified polyethylene terephthalate described above.
- glycols other than ethylene glycol may be used alone or in a combination of two or more.
- Dicarboxylic acid In the glycol-modified polyethylene terephthalate, the content ratio of the terephthalic acid unit and the other dicarboxylic acid unit in the dicarboxylic acid structural unit is not particularly limited, but is usually 25: 75-99: 1, preferably in a molar ratio. It is selected in the range of 60: 40-90: 10.
- the content ratio of the ethylene glycol unit and the other daricol unit in the glycol structural unit is not particularly limited, but is usually 50:50 to 99: 1, preferably 60:40 to 90:10 in molar ratio. Is selected.
- the above-mentioned modified It is preferable to use a polyethylene terephthalate resin containing at least one polyethylene terephthalate.
- Base film strength obtained using one type of modified polyethylene terephthalate As long as it has the performance that satisfies the requirements described above, only one type of the modified polyethylene terephthalate may be used. It is also possible to use a combination of more than one kind, or a combination of a general-purpose highly crystalline polyethylene terephthalate and one or more modified polyethylene terephthalates.
- the polyethylene terephthalate resin used as a material of the base film may optionally contain other thermoplastic resin as long as the object of the present invention is not impaired.
- the other thermoplastic resins are not particularly limited, but include, for example, other polyester resins such as polybutylene terephthalate and polyethylene naphthalate; polyolefin resins such as polyethylene and polypropylene; Bull-based resins such as Shiridani-bilidene, polybutyl alcohol, ethylene-butyl acetate copolymer; and acrylic resins such as poly (methyl methacrylate) and other (meth) atalylate copolymers It comes out.
- the polyethylene terephthalate-based resin used as the material of the base film of the decorative sheet has a glass transition temperature in the range of about 30 to 70 ° C. in the preforming of the decorative sheet. It is preferable in terms of vacuum formability and the like.
- the base film is prepared by preparing a resin composition containing the polyethylene terephthalate-based resin and forming the film by various conventionally known molding methods, and then, if necessary, uniaxially or biaxially stretched, preferably biaxially stretched. By doing so, it can be manufactured.
- the stretching ratio is usually about 1.2-2.0 times for both MD and TD.
- various additives are preferably added to the resin composition as needed.
- these various additives include, for example, antioxidants, ultraviolet absorbers, light stabilizers, lubricants, lubricants, plasticizers, antistatic agents, flame retardants, coloring agents, deodorants, and antibacterial agents. .
- antioxidants ultraviolet absorbers, light stabilizers, lubricants, lubricants, plasticizers, antistatic agents, flame retardants, coloring agents, deodorants, and antibacterial agents.
- additives can be appropriately selected from known additives depending on the use of the decorative resin molded article of the present invention. For example, when the decorative resin molded article of the present invention is used for applications requiring weather resistance, it is desirable to impart weather resistance to the base film of the laminate type decorative sheet.
- the resin composition which is a molding material for the base film, includes an organic ultraviolet absorber such as a benzotriazole-based, benzophenone-based, or salicylate-based, and an average particle size of about 0.2 m or less. It is preferable to blend inorganic ultraviolet absorbers such as fine particles of Zirconium zinc, cerium cerium and titanium oxide, and hinderdamine light stabilizers.
- the decorative sheet of the present invention has a decorative layer on the base film, and its configuration is not particularly limited, depending on whether it is used as a transfer sheet, a laminate sheet, or both. It can be selected as appropriate.
- a typical configuration is that the decorative layer is easily peeled off as a transfer layer on the release layer of a base film provided with a release layer on one surface.
- a decorative layer is provided via a release layer for the purpose of forming the adhesive layer, and an adhesive layer is further provided thereon for the purpose of improving the adhesiveness between the resin molded article and the decorative sheet.
- the decorative layer is an essential requirement, but the release layer and the adhesive layer may be formed as needed.
- the release agent may be omitted when the transfer layer itself has sufficient peeling (transferability) from the base film.
- an easy-adhesion primer layer for enhancing the adhesion between the decorative layer and the base film is provided on one side of the base film, if necessary, and in addition, a decorative layer may be further provided, and an adhesive layer may be provided as necessary, similarly to the above. Since it is necessary that the substrate sheet does not peel off from the molded product, the laminate sheet does not need to be provided with a release layer and a release layer, unlike the transfer sheet.
- FIG. 1 is a cross-sectional view illustrating an example of the configuration of the decorative sheet of the present invention.
- the decorative sheet 10 has a configuration of a transfer sheet.
- the decorative sheet 10 includes a release layer 2, an optional decorative layer 4, an optional decorative layer 4, and an optional adhesive layer 5, which are provided in order on a release layer 2 provided on the back side of the base film 1. It has a laminated structure.
- the release layer 3 and the decoration layer 4 The adhesive layer 5 forms a transfer layer 6 in a body.
- the release layer 2 uses the decorative sheet 10 as a transfer sheet, and facilitates the peeling of the base film 1 from the resin molded body on which the decorative sheet 10 is laminated and integrated.
- This is a layer that is peeled and removed together with the base film 1 during transfer (this is distinguished from a peel layer that remains on the resin molded body side as a part of the transfer layer).
- This can be formed by a conventionally known method, for example, by applying a coating solution containing a releasing material such as polyethylene wax, silicone resin, melamine resin, and the like.
- the thickness of the release layer 2 is usually about 0. m. When the base film 1 is peeled off, the release layer 2 adheres to the base film side.
- the peeling layer 3 also has a function as a protective layer of the decorative layer 4 when the decorative sheet 10 is used as a transfer sheet and the base film 1 is peeled off.
- the release layer 3 can be formed by a conventionally known method, for example, by applying a coating liquid containing an acrylic resin having excellent transparency, weather resistance, and scratch resistance.
- the thickness of the release layer 3 is not particularly limited, but is usually 110 / ⁇ , preferably 3-20 ⁇ m.
- both the release layer 2 and the release layer 3 can be omitted.
- only one of the release layer 2 and the release layer 3 has sufficient releasability, only one of the layers may be provided.
- the release layer 2 and the release layer 3 are not provided in the case of a laminate sheet.
- the decorative layer 4 is for displaying characters, figures, symbols, and the like on the surface of the resin molded body, and for displaying a colored surface.
- a typical example is a pattern ink layer.
- This pattern ink layer may be a single color with no pattern, such as black or silver metallic, or wood grain, stone grain (marble pattern, granite pattern), natural leather surface pattern, cloth grain, It may be a one-color or multi-color pattern having a pattern such as an abstract pattern.
- the pattern ink layer may be a transparent yellow solid surface, a pattern layer and a silver metallic color entire surface, or a pattern layer and a gold solid surface.
- the pattern ink layer includes a pigment ink layer composed of a pigment and a resin binder, a glitter pigment layer composed of a pearl pigment and a resin binder, and a dye ink layer composed of a dye and a resin binder. At least one layer selected from the group consisting of: Such a pattern ink layer should be formed by a normal printing method such as offset printing, gravure printing, ink jet printing, or screen printing, or a coating method such as roll coating or spray coating. Can be. The thickness of the pattern ink layer is usually in the range of 0.1 to 20 m.
- the decorative layer 4 may be composed of a metal thin film layer, or may be composed of a combination of a metal thin film layer and a printing layer.
- This metal thin film layer can be formed by a vacuum deposition method, a sputtering method, an ion plating method, a plating method, or the like.
- select from metals such as aluminum, nickel, gold, platinum, chromium, iron, copper, tin, indium, silver, titanium, lead, zinc, or alloys or compounds of these. By appropriately selecting and using, a desired metal thin film can be formed.
- the adhesive layer 5 is a layer provided on the back side of the decorative sheet, if desired, in order to improve the adhesiveness between the resin molded article of the adherend and the decorative sheet.
- the adhesive layer 5 may be made of a conventionally known heat-sensitive adhesive, for example, vinyl acetate resin, vinyl chloride vinyl acetate copolymer, acrylic resin, thermoplastic polyester resin, polyamide resin. Those containing at least one kind of thermoplastic resin selected from ionomer resin, chlorinated polyolefin resin, thermoplastic polyurethane resin, rubber resin and the like are preferably used.
- the adhesive layer 5 can be formed from the adhesive containing the resin by a known printing or coating method such as a gravure printing method or a roll coating method.
- the thickness of the adhesive layer 5 is not particularly limited, but is usually about 50 to 50 m, preferably 5 to 30 m.
- the decorative sheet of the present invention is used exclusively for a laminate sheet, in order to improve the adhesiveness with a layer provided on the base film, the surface of the base film on which the layer is provided, It is common to provide an easily-adhesive primer layer as described above, but in addition to this, a physical or chemical surface treatment such as an oxidation method or a roughening method can be applied as a treatment for easy adhesion. .
- Examples of the above-mentioned oxidizing method include corona discharge treatment, plasma
- a sanding method, a solvent processing method, and the like can be given as examples of the roughening method, such as a sanding method, a chromic acid treatment, a flame treatment, a hot air treatment, and an ozone-ultraviolet irradiation treatment.
- the corona discharge treatment is preferable in terms of effect and operability.
- known resins such as urethane resin and epoxy resin may be used as the easy-adhesion primer.
- the decorative resin molded article of the present invention has two modes, and the first aspect has a resin molded article and the above-described decorative sheet of the present invention which is integrally laminated thereon.
- the decorative sheet of the decorative sheet has a structure in which the decorative layer is joined to and integrally formed on the resin molded body side.
- the decorative layer is joined to the resin molded body and joined thereto.
- the decorative sheet according to the present invention has a decorative layer excluding the base film from the decorative sheet.
- the first embodiment is a caro-decorated resin molded article obtained by using the decorative sheet of the present invention as a laminate
- the second embodiment is obtained by using the decorative sheet of the present invention as a transfer sheet. It is a decorated decorative resin molded product.
- the resin material constituting the resin molded body may be a thermoplastic resin that can be injection-molded or a thermosetting resin (two-component curable resin). ) Is not particularly limited, and various resins can be used.
- thermoplastic resin materials include, for example, a poly-based polymer such as polyacrylamide bur and polyacrylamide bileryden, polystyrene, acrylonitrile; styrene copolymer, acrylonitrile butadiene styrene copolymer resin (ABS Styrene-based resins such as poly (ethylene); acrylic-based resins such as polymethyl (meth) acrylate, polyester (meth) acrylate, and polyacrylonitrile; polyolefin-based resins such as polyethylene and polypropylene; polyethylene terephthalate, ethylene Glyco-luterephthalic acid Isophthalic acid copolymer, polyester resins such as polybutylene terephthalate; polycarbonate resins.
- a poly-based polymer such as polyacrylamide bur and polyacrylamide bileryden, polystyrene, acrylonitrile
- styrene copolymer acrylonitrile butadiene s
- thermosetting resin examples include a two-component reaction curing type urethane resin and epoxy resin. These resins may be used alone or in combination of two or more. In addition, these resins may contain various additives as required, such as antioxidants, heat stabilizers, ultraviolet absorbers, light stabilizers, flame retardants, plasticizers, fillers, lubricants, release agents, An antistatic agent, a coloring agent, and the like can be added.
- the thickness of the resin molded article constituting the decorative resin molded article There is no particular limitation on the thickness of the resin molded article constituting the decorative resin molded article. A force selected according to the intended use of the decorative resin molded article is usually 11 to 5 mm, preferably 2 to 3 mm. You.
- FIG. 2 is a partial cross-sectional view showing the configuration of an example of the decorative resin molded product of the present invention.
- the decorative sheet 10 is a laminate sheet, and all layers thereof are resin molded. It has a structure laminated on the body 7.
- the decorative resin molded product is manufactured by the injection molding simultaneous decoration method using the decorative sheet of the present invention described above.
- this simultaneous injection molding and decorating method during injection molding, a decorative sheet is inserted into a mold in advance and integrated with the fluid in a flow state injected and injected into the cavity. Decoration is applied to the body surface.
- This simultaneous injection molding decorating method can be roughly classified into a laminate decorating method and a transfer decorating method.
- a laminate sheet is used as a decorating sheet, and a base film and
- a decorative resin molded article is obtained in which all layers of the decorative sheet having the decorative layer provided on the surface are laminated and integrated on the surface of the resin molded article.
- the transfer decoration method a transfer sheet is used as a decoration sheet, and the base film is peeled from the decoration sheet laminated and integrated on the surface of the resin molded article, and the decoration layer is transferred.
- a decorative resin molded product laminated as a layer on the resin molded product is obtained.
- the decorative sheet to be inserted into the mold during the injection molding is usually subjected to a preliminary molding before injection molding to form a predetermined shape such as a three-dimensional shape having a three-dimensional curved surface.
- the injection molding die may be used as a vacuum molding die, and the decorative sheet may be processed into a predetermined shape by vacuum molding in the injection molding die, or another vacuum molding may be performed outside the injection molding die.
- the decorative sheet may be vacuum-formed into a predetermined shape by a molding die and inserted into the injection molding die.
- the injection mold is used as a vacuum mold, and the preform is performed because the decorative sheet can be laminated and integrated on the resin molded body effectively and accurately.
- vacuum forming means vacuum pressure forming. Is also included.
- the method for producing a decorative resin molded article of the present invention includes two embodiments, a laminating method and a transfer method.
- a laminating method first, (A) a step of preforming a decorative sheet; ) A resin molded body and a decorative sheet are laminated and integrated, and an injection step and (C) a resin molded body obtained by laminating all layers of the decorative sheet are sequentially performed.
- the resin molded body obtained by laminating the above-mentioned steps (A) and (B), and (C ′) the decorative sheet is placed in a mold with the base film of the decorative sheet.
- a step of removing the base film of the decorative sheet is sequentially performed after removing the resin molded body in which the decorative sheet is laminated or by removing the resin molded body formed by laminating all the layers of the decorative sheet.
- the injection mold a combination of a female-male fitting type in which the movable mold is a female mold having a molding surface of a predetermined shape and a fixed mold is a male mold having a convex portion is used. It is also possible to use a combination in which the movable mold is a concave mold having a molding surface of a predetermined shape and the fixed mold is a flat mold.
- This step (A) is a preliminary forming step of the decorative sheet.
- the decorative sheet 100 is first formed by a female mold (movable mold) having a molding surface of a predetermined shape.
- the base film of the decorative sheet 100 is disposed so as to face the molding surface of the above.
- the decorative sheet 100 is heated and softened by a hot platen 90.
- the heating temperature is preferably in the range of not less than the temperature near the glass transition temperature and less than the melting temperature (or melting point). Usually, it is more preferable to carry out at a temperature near the glass transition temperature.
- the temperature in the vicinity of the glass transition temperature refers to a range of about ⁇ 5 ° C. of glass transition temperature, and is generally about 70 to 80 ° C. in the present invention.
- the hot platen 90 any known method such as a radiant heating method, a conduction heating method, and a dielectric heating method may be used.
- the decorative sheet 100 is sandwiched between the female mold 70 and the hot platen 90 to close the opening of the cavity 72, and a vacuum is drawn through the intake hole 74 provided in the female mold 70, and if necessary.
- the compressed air is supplied through the ventilation holes provided in the hot platen 90. Both dies are usually heated to about 30-50 ° C.
- the decorative sheet 100 is stretched along the forming surface of the female mold 70 as shown in FIG.
- the step (B) is an injection molding step.
- the female mold 70 and the male mold (fixed mold) each having the decorative sheet 100 adhered along the molding surface as described above are used.
- the resin molding in a flowing state is injected into the cavity formed by both molds and solidified, thereby forming the resin molding formed and the decorative sheet 100 together.
- the hot platen 90 is evacuated, and the female mold 70 is advanced as shown in FIG. 5.
- Injection molding is performed by injecting and filling a flowing resin molding material P through a gate 84 provided in the male mold 80 into the cavity space formed between the male mold 80 and the male mold 80, and solidifying the resin. Do.
- the resin molding material P is a thermoplastic resin
- it is made into a fluid state by heating and melting, then cooled and solidified.
- the resin molding material P is a thermosetting resin
- an uncured liquid composition is used, and is cured and solidified by a chemical reaction.
- the decorative sheet 100 in the female mold 80 is adhered integrally with the formed resin molded body.
- Steps (C) and (C ') are steps of taking out the resin molded article on which the decorative sheet is laminated and integrated from the injection mold, and step (C) is the case of the laminating method. Steps (C ') and (C') are for the transfer method.
- the female mold 70 is separated from the male mold 80, and the resin molded body formed by laminating all the layers of the decorative sheet 100 is taken out. If there is a surplus part having a large force, it is appropriately trimmed to obtain a desired decorative resin molded product.
- the female mold 70 is separated from the male mold 80, and the resin molded body obtained by laminating the decorative sheet 100 is used as the base film of the decorative sheet 100. The resin film is taken out while remaining in the mold 70, or after taking out a resin molded body in which all the layers of the decorative sheet 100 are laminated, and peeling the base film of the decorative sheet 100. , Desired decorative resin Obtain molded articles.
- the manufacturing process of the decorative resin molded product is the same as described above.
- the decorative sheet used in the simultaneous injection molding and decorating method of the present invention may be either a single sheet or a continuous strip.
- the stress of MD and TD when the elongation percentage of the base film was 200% was measured according to the conditions described in the specification text.
- Terephthalic acid was used as the dicarboxylic acid component, and ethylene glycol and 1,4-cyclohexanedimethanol were used as the glycol components. These were copolymerized to obtain glycol-modified polyethylene terephthalate. Using this as a resin raw material and adjusting the copolymerization ratio and stretching ratio, the stress at 200% elongation at 80 ° C in the TD and MD directions as shown in Table 1 is 9.4-19.5 N / cm Three films a, b and c distributed in the range of 2 were obtained.
- Terephthalic acid and isophthalic acid were used as the dicarboxylic acid component, and ethylene glycol was used as the dalicol component. These were copolymerized to obtain carboxylic acid-modified polyethylene terephthalate.
- this was a resin raw material and adjusting the copolymerization ratio and stretch ratio, the three types of stress force at 200% elongation at 80 ° C in the TD and MD directions shown in Table 1 in Table 1 were obtained. Films d, e and f were obtained.
- a coating liquid containing an acrylic resin was applied and dried to form a release layer having a thickness of 7 / zm.
- a grain pattern was formed on the release layer by gravure rotary printing using gravure ink, and a pattern ink layer as a decorative layer was provided.
- the ink used was an acrylic resin containing a red iron oxide, a pigment, and graphite that also had carbon black power.
- a coating liquid containing an acrylic resin and a vinyl chloride-vinyl acetate copolymer in a mass ratio of 1: 1 is applied thereon and dried to form an adhesive layer having a thickness of 10 m. And decorative sheets were produced.
- ABS resin Nippon A & L Co., Ltd., trade name "Clustik MTH-2"
- a decorative resin molded product of a laminate type was manufactured by the simultaneous injection molding and decorating method. The preforming conditions and injection molding conditions are shown below.
- As the female mold a mold having a corrugated molding surface as shown in FIG. 3 was used.
- Heating plate set temperature 300 ° C
- Decorative sheet temperature 70-80 ° C
- ABS resin (see above)
- the decorative sheet shows any of wrinkles, floating, peeling, and breakage, and has a practical problem.
- the decorative sheet has excellent moldability if the requirements of the present invention are satisfied.
- the decorative sheet of the present invention has good moldability and is suitably used for decorative resin molded articles formed by the simultaneous injection molding and decorating method.
- a decorative resin molded article having good quality can be produced, and is used for various uses such as vehicle interior materials, surface members of home electric appliances, miscellaneous goods, and the like.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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EP04819408.8A EP1688248B1 (en) | 2003-11-28 | 2004-11-25 | Decorating sheet, decorated resin molded article and method for production thereof |
JP2005515793A JPWO2005051660A1 (ja) | 2003-11-28 | 2004-11-25 | 加飾シート、加飾樹脂成形品及びその製造方法 |
US10/581,026 US7323251B2 (en) | 2003-11-28 | 2004-11-25 | Decorating sheet, decorated resin molded article and method for production thereof |
KR1020067010324A KR101426946B1 (ko) | 2003-11-28 | 2004-11-25 | 가식 시트, 가식 수지 성형품 및 그 제조 방법 |
KR1020127034353A KR101496536B1 (ko) | 2003-11-28 | 2004-11-25 | 가식 시트, 가식 수지 성형품 및 그 제조 방법 |
Applications Claiming Priority (2)
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JP2003400527 | 2003-11-28 | ||
JP2003-400527 | 2003-11-28 |
Publications (1)
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WO2005051660A1 true WO2005051660A1 (ja) | 2005-06-09 |
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PCT/JP2004/017493 WO2005051660A1 (ja) | 2003-11-28 | 2004-11-25 | 加飾シート、加飾樹脂成形品及びその製造方法 |
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US (1) | US7323251B2 (ja) |
EP (2) | EP2623319B1 (ja) |
JP (1) | JPWO2005051660A1 (ja) |
KR (2) | KR101426946B1 (ja) |
CN (1) | CN100556690C (ja) |
WO (1) | WO2005051660A1 (ja) |
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EP2623319B1 (en) * | 2003-11-28 | 2017-07-19 | Dai Nippon Printing Co., Ltd. | Use of a decorating sheet and of a decorated moulding resin, as well as their methods of production |
-
2004
- 2004-11-25 EP EP13166552.3A patent/EP2623319B1/en not_active Not-in-force
- 2004-11-25 EP EP04819408.8A patent/EP1688248B1/en not_active Ceased
- 2004-11-25 US US10/581,026 patent/US7323251B2/en active Active
- 2004-11-25 KR KR1020067010324A patent/KR101426946B1/ko active IP Right Grant
- 2004-11-25 WO PCT/JP2004/017493 patent/WO2005051660A1/ja active Application Filing
- 2004-11-25 KR KR1020127034353A patent/KR101496536B1/ko active IP Right Grant
- 2004-11-25 CN CNB2004800353667A patent/CN100556690C/zh not_active Expired - Fee Related
- 2004-11-25 JP JP2005515793A patent/JPWO2005051660A1/ja not_active Withdrawn
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JPS6445699A (en) * | 1987-08-17 | 1989-02-20 | Diafoil Co Ltd | Heat-resistant polyester film for transfer film |
JPH0214111A (ja) * | 1988-07-01 | 1990-01-18 | Dainippon Printing Co Ltd | 賦形用フィルム |
JPH03288699A (ja) * | 1990-04-05 | 1991-12-18 | Toppan Printing Co Ltd | 転写箔 |
JPH07205538A (ja) * | 1994-01-21 | 1995-08-08 | Dainippon Printing Co Ltd | 転写フィルム |
JPH09123694A (ja) * | 1995-10-31 | 1997-05-13 | Nissha Printing Co Ltd | 立体転写物の製造方法とその製造方法に用いる転写材 |
JP2000043094A (ja) * | 1998-07-29 | 2000-02-15 | Dainippon Printing Co Ltd | 射出成形同時絵付用転写シート、及び射出成形同時絵付方法 |
JP2000141401A (ja) * | 1998-11-17 | 2000-05-23 | Nissha Printing Co Ltd | インサートフィルムとその製造方法 |
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See also references of EP1688248A4 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100035032A1 (en) * | 2005-11-12 | 2010-02-11 | Hueck Folien Ges.M.B.H | Decorative foil |
US8192839B2 (en) * | 2006-03-16 | 2012-06-05 | Greene Daryl W | Silicone fishing lure skirt with foil or holographic film and method of making the same |
EP2008812A1 (en) * | 2006-04-19 | 2008-12-31 | Toray Industries, Inc. | Biaxially oriented polyester film for forming members |
EP2008812A4 (en) * | 2006-04-19 | 2012-04-04 | Toray Industries | POLYESTER FILM ORIENTED BIAXIALLY TO FORM ELEMENTS |
US8354171B2 (en) | 2006-04-19 | 2013-01-15 | Toray Industries, Inc. | Biaxially oriented polyester film for molded part |
US7736567B2 (en) * | 2006-12-14 | 2010-06-15 | Snyang Yu Enterprise Co., Ltd. | Method of molding product with surface film |
JP2011088420A (ja) * | 2009-10-26 | 2011-05-06 | Dainippon Printing Co Ltd | 三次元成形加飾フィルム及びその製造方法並びにそれを用いた加飾成形品及びその製造方法 |
JP2012159646A (ja) * | 2011-01-31 | 2012-08-23 | Dainippon Printing Co Ltd | 透過型曲面スクリーンの製造方法、及び表示装置の製造方法 |
JP2015186926A (ja) * | 2015-07-08 | 2015-10-29 | 大日本印刷株式会社 | 三次元成形加飾フィルム及びその製造方法並びにそれを用いた加飾成形品及びその製造方法 |
JP2018159584A (ja) * | 2017-03-22 | 2018-10-11 | 株式会社ファルテック | レーダカバーの製造方法及びレーダカバー |
Also Published As
Publication number | Publication date |
---|---|
EP1688248A4 (en) | 2010-05-26 |
KR20130018963A (ko) | 2013-02-25 |
US20070224433A1 (en) | 2007-09-27 |
JPWO2005051660A1 (ja) | 2007-06-21 |
US7323251B2 (en) | 2008-01-29 |
EP2623319B1 (en) | 2017-07-19 |
KR101426946B1 (ko) | 2014-08-06 |
EP2623319A1 (en) | 2013-08-07 |
EP1688248B1 (en) | 2016-03-30 |
CN1886260A (zh) | 2006-12-27 |
KR101496536B1 (ko) | 2015-02-26 |
EP1688248A1 (en) | 2006-08-09 |
KR20060120155A (ko) | 2006-11-24 |
CN100556690C (zh) | 2009-11-04 |
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