WO2023013406A1 - 積層フィルム - Google Patents
積層フィルム Download PDFInfo
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- WO2023013406A1 WO2023013406A1 PCT/JP2022/028097 JP2022028097W WO2023013406A1 WO 2023013406 A1 WO2023013406 A1 WO 2023013406A1 JP 2022028097 W JP2022028097 W JP 2022028097W WO 2023013406 A1 WO2023013406 A1 WO 2023013406A1
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Images
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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
- 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
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
Definitions
- the present invention relates to laminated films.
- the present invention relates to a laminated film applicable as the outermost layer of a decorative film.
- a decorative film is generally manufactured through a step of laminating a decorative layer to an outermost film. Lamination using an adhesive and thermal lamination are generally used as the method of bonding.
- Patent Document 1 International Publication No. 2011/142453
- a vinylidene fluoride resin (A) and an acrylic resin (B) A film having an arithmetic average roughness of 0.1 to 20 nm on at least one surface, a heat of crystal fusion of 18 to 40 J / g as measured by a differential scanning calorimeter, and a haze value of 3.5 or less is proposed.
- Patent Document 2 Japanese Patent Application Laid-Open No. 2012-187934 discloses that by using a fluorine-based (meth)acrylic resin containing a fluorine-containing alkyl (meth)acrylate polymer component, it can also be used for vehicle interior and exterior parts. It is described that a novel fluororesin film having excellent transparency, surface hardness, chemical resistance, and stain resistance was successfully produced.
- a fluororesin-laminated acrylic resin film in which a fluororesin film layer is laminated on at least one side of a film layer made of an acrylic resin (A), wherein the fluororesin film layer is A fluororesin-laminated acrylic resin film obtained by molding a fluororesin (C) containing a fluororesin (B) containing a fluorine-containing alkyl (meth)acrylate polymer component is specifically disclosed. ing.
- Patent Document 3 Japanese Patent Application Laid-Open No. 2021-123082 discloses that clouding of a film can be prevented by providing a protective layer composed of a plurality of mixed resin layers containing a vinylidene fluoride-based resin and an acrylic acid ester-based resin. is disclosed.
- the high transparency of the resin film is an important characteristic, when the design applied to the decorative layer is viewed through the protective layer, it is possible to prevent the design from being distorted and viewed. sufficient consideration has not been given. In order to suppress distortion, it is advantageous for the resin film to have smoothness. However, blocking resistance and smoothness are contradictory properties, and a resin film having both properties does not yet exist.
- the present invention was created in view of the above circumstances, and in one embodiment, it is an object to provide a laminated film having both blocking resistance and smoothness.
- a surface layer composed of a resin composition containing a vinylidene fluoride resin and a methacrylic acid ester resin and a surface layer containing a methacrylic acid ester resin In a laminated film having a back layer made of a resin composition, adding fine particles having a particle size of 0.2 ⁇ m or more to the back layer while controlling protrusions that may locally exist on the outer surface of the back layer. is effective in solving the problems, and the present invention exemplified below has been achieved.
- a laminated film comprising a back layer laminated on the surface layer, comprising a resin composition containing fine particles having a particle size of 0.2 ⁇ m or more, The average particle diameter of the fine particles is less than 1.0 ⁇ m,
- the number of projections present on the outer surface of the back surface layer, which are counted using a white light interferometer, and have a height of 0.2 ⁇ m or more with respect to the average surface is 400 or less per area of 697 ⁇ m ⁇ 539 ⁇ m.
- a laminated film having both blocking resistance and smoothness can be obtained.
- the laminated film can be used by being attached to a base material, and can be suitably used, for example, as the outermost layer of a decorative film, especially a metallic decorative film.
- FIG. 1 is a schematic cross-sectional view showing a laminated structure of a film according to one embodiment of the present invention
- FIG. 1 shows a schematic cross-sectional view showing the laminated structure of a laminated film 1 according to one embodiment of the present invention.
- the laminated film 1 has a laminated structure comprising at least a surface layer 10 and a back layer 20 laminated on the surface layer 10 in this order.
- the surface layer 10 and the back layer 20 are directly bonded without any other resin layer interposed between them.
- the surface layer contains a vinylidene fluoride-based resin and a methacrylate ester-based resin.
- the vinylidene fluoride-based resin is 60 parts by mass or more with respect to the total of 100 parts by mass of the vinylidene fluoride-based resin and the methacrylic acid ester-based resin, properties such as chemical resistance, weather resistance, and stain resistance are improved. be able to.
- the surface layer contains a small amount of methacrylic acid ester-based resin, the adhesiveness and adhesion to the back layer can be improved.
- the vinylidene fluoride-based resin is a homopolymer of vinylidene fluoride, or a copolymer of vinylidene fluoride and a monomer copolymerizable with vinylidene fluoride. is less than 0.2 ⁇ m (including particles so fine that the particle size cannot be specified and particles forming a matrix phase). Conversely, resin particles having a particle size of 0.2 ⁇ m or more in the film are not included in the vinylidene fluoride resin in the present specification.
- the particle size of the resin particles was determined by fixing the film in a small metal vice, cutting the film with a single-edged knife so that the cross section of the film was smooth, and holding the film in the vice. It refers to the diameter of the smallest circle that can surround the resin particles when the cross section of the film is observed at a magnification of 2000 using a laser microscope (eg VK-X110 manufactured by Keyence Corporation).
- Examples of monomers copolymerizable with vinylidene fluoride include vinyl fluoride, tetrafluoroethylene, hexafluoropropylene, hexafluoroisobutylene, trifluoroethylene chloride, various fluorinated alkyl vinyl ethers, and styrene, ethylene, butadiene. , and known vinyl monomers such as propylene, which can be used alone or in combination of two or more. Among these, at least one selected from vinyl fluoride, tetrafluoroethylene, hexafluoropropylene and trifluoroethylene chloride is preferred, and hexafluoropropylene is more preferred.
- the surface layer is composed of one or two selected from a copolymer of vinylidene fluoride and hexafluoropropylene and polyvinylidene fluoride (PVDF homopolymer) (A), and a methacrylic acid ester resin (B). It is preferable to contain 60 parts by mass or more and 80 parts by mass or less of (A) and 20 parts by mass or more and 40 parts by mass or less of (B) with respect to a total of 100 parts by mass of (A).
- PVDF homopolymer a copolymer of vinylidene fluoride and hexafluoropropylene and polyvinylidene fluoride
- B methacrylic acid ester resin
- the polymerization reaction for obtaining the vinylidene fluoride resin includes known polymerization reactions such as radical polymerization and anionic polymerization. Further, the polymerization method includes known polymerization methods such as suspension polymerization and emulsion polymerization. The mechanical properties and the like of the obtained resin change depending on the polymerization reaction and/or polymerization method.
- the methacrylic acid ester resin is a homopolymer of a methacrylic acid ester such as methyl methacrylate, a copolymer of a methacrylic acid ester and a monomer copolymerizable with the methacrylic acid ester, and is used in the film. with a particle size of less than 0.2 ⁇ m (including those with an unspecified particle size and those forming a matrix phase). Conversely, resin particles having a particle size of 0.2 ⁇ m or more in the film are not included in the methacrylic acid ester resin in the present specification.
- Monomers copolymerizable with methacrylates include (meth)acrylates such as butyl acrylate, butyl methacrylate, ethyl acrylate, and ethyl methacrylate; styrene, ⁇ -methylstyrene, p-methylstyrene , o-methylstyrene, t-butylstyrene, divinylbenzene, and tristyrene; vinyl cyanide monomers such as acrylonitrile and methacrylonitrile; glycidyl group-containing monomers such as glycidyl (meth)acrylate; monomers; vinyl carboxylate monomers such as vinyl acetate and vinyl butyrate; olefin monomers such as ethylene, propylene and isobutylene; diene monomers such as 1,3-butadiene and isoprene; maleic acid and anhydrous Unsaturated carboxylic acid-based monomers such as
- Polymerization reactions for obtaining methacrylic acid ester resins include known polymerization reactions such as radical polymerization, living radical polymerization, living anion polymerization, and living cationic polymerization.
- the polymerization method includes known polymerization methods such as bulk polymerization, suspension polymerization, emulsion polymerization, and solution polymerization. Polymerization reactions and polymerization methods change the mechanical properties of the resulting resin.
- Types of copolymers of vinylidene fluoride resins and methacrylic acid ester resins include random copolymers, graft copolymers, and block copolymers (for example, diblock copolymers, triblock copolymers, linear types such as gradient copolymers, etc.). , star-shaped copolymers polymerized by arm-first method or core-first method, etc.), copolymers obtained by polymerization using macromonomers, which are high molecular compounds with polymerizable functional groups (macromonomer copolymers) , and mixtures thereof. Among them, graft copolymers and block copolymers are preferable from the viewpoint of resin productivity.
- the lower limit of the melting point of the vinylidene fluoride resin is preferably 150°C or higher, more preferably 160°C or higher.
- the upper limit of the melting point of the vinylidene fluoride resin is preferably 170° C. or less, which is equal to the melting point of polyvinylidene fluoride (PVDF).
- the lower limit of the glass transition point (Tg) of the methacrylic acid ester resin is preferably 70°C or higher, more preferably 80°C or higher.
- the upper limit of the Tg of the methacrylic acid ester resin is preferably 120°C or less.
- the melting point of the vinylidene fluoride-based resin and the Tg of the methacrylic acid ester-based resin can be measured by heat flux differential scanning calorimetry (heat flux DSC).
- heat flux DSC heat flux differential scanning calorimetry
- a sample mass of 1.5 mg is heated from room temperature to 200 ° C. at a heating rate of 10 ° C./min DSC curve (first run) can be obtained from
- the surface layer contains other resins, plasticizers, heat stabilizers, antioxidants, light stabilizers, and crystal nuclei as long as the objects of the present invention are not impaired. agents, antiblocking agents, sealing improvers, release agents, coloring agents, pigments, foaming agents, flame retardants, and the like.
- the total content of the vinylidene fluoride-based resin and the methacrylic acid ester-based resin in the film constituting the surface layer is 80% by mass or more, typically 90% by mass or more, and more Typically, it is 95% by mass or more, and can be 100% by mass.
- the total content of resin (B) is 80% by mass or more, typically 90% by mass or more, more typically 95% by mass or more, and can be 100% by mass.
- a UV absorber may be added to the surface layer, but it is preferable not to add it from the viewpoint of cost and bleed-out.
- the average thickness of the surface layer is preferably 1-40 ⁇ m, more preferably 5-35 ⁇ m, even more preferably 8-30 ⁇ m, and particularly preferably 10-20 ⁇ m.
- the surface layer may be formed with a single layer or with multiple layers, but it is desirable that the total average thickness is within the above average thickness.
- the average thickness of the surface layer can be calculated as an average value when the thickness is measured at multiple locations by observing the cross section of the surface layer using a confocal laser microscope.
- the back layer is mainly composed of methacrylic acid ester resin.
- the back layer contains 70% by mass or more of a methacrylic acid ester resin in order to improve blocking resistance and transparency.
- the back layer may not contain a vinylidene fluoride-based resin, but it is preferable to contain it in that scraps of the laminated film generated in the manufacturing process can be reused in the back layer.
- the definitions and embodiments of the vinylidene fluoride-based resin and the methacrylic acid ester-based resin, including the preferred embodiments, are as described for the surface layer, so duplicate descriptions will be omitted.
- the back layer contains fine particles with a particle size of 0.2 ⁇ m or more in addition to the methacrylate ester resin.
- the outer surface of the surface layer is moderately uneven, thereby improving blocking resistance.
- Such particulates are not required in the surface layer and are preferably absent.
- the microparticles are present dispersed in the matrix of the backing layer.
- the material of the fine particles is not particularly limited, they are preferably resin particles, more preferably crosslinked (meth)acrylic acid ester resin particles.
- the crosslinked (meth)acrylate resin particles have a refractive index similar to that of the methacrylate resin that is the main component of the back layer. There is a characteristic that it is difficult to lose sexuality.
- the particle size of fine particles refers to the diameter of the smallest circle that can surround the resin particles when the film is observed by the method described above. Therefore, even if it is a particulate crosslinked (meth)acrylic ester-based resin, if the particle size in the film is less than 0.2 ⁇ m, if it satisfies the definition of the methacrylic ester-based resin described above, the methacrylic ester-based It corresponds to resin.
- the fine particles preferably have an average particle diameter of less than 1.0 ⁇ m.
- the average particle diameter of the fine particles is preferably less than 1.0 ⁇ m, more preferably 0.98 ⁇ m or less, and even more preferably 0.96 ⁇ m or less, so that the unevenness of the outer surface of the back layer becomes too large. Therefore, it is possible to improve the smoothness of the film.
- the average particle diameter of the fine particles is preferably 0.20 ⁇ m or more, more preferably 0.40 ⁇ m or more, and still more preferably 0.60 ⁇ m or more.
- the average particle diameter of the fine particles is preferably 0.20 to 1.0 ⁇ m, more preferably 0.40 to 0.98 ⁇ m, and even more preferably 0.60 to 0.96 ⁇ m.
- the average particle size of fine particles refers to the D50 value (volume basis) of particle size distribution measured by a laser diffraction/scattering method.
- the average thickness of the back layer is preferably 10 to 100 ⁇ m, more preferably 15 to 90 ⁇ m, even more preferably 20 to 85 ⁇ m, and particularly preferably 25 to 80 ⁇ m.
- the back layer may be formed as a single layer or as a plurality of layers, but it is desirable that the total average thickness is within the above average thickness.
- the average thickness of the back layer can be calculated as an average value when the thickness of the back layer is measured at multiple locations by observing the cross section of the back layer using a confocal laser microscope.
- crosslinked (meth)acrylic acid ester resin particles include, but are not limited to, crosslinked polymethyl acrylate, crosslinked polyethyl acrylate, crosslinked polymethyl methacrylate, crosslinked polyethyl methacrylate, crosslinked polyn-butyl methacrylate, and the like. These can be used alone or in combination of two or more. Among them, it is preferable to contain crosslinked polymethyl methacrylate because the difference in refractive index from that of the methacrylic acid ester resin constituting the matrix is small.
- the crosslinked (meth)acrylic acid ester-based resin particles are easily maintained without being compatible with the methacrylic acid ester-based resin in which the fine particles constitute the matrix due to the crosslinked structure even when heat is applied during film production.
- the amount of fine particles to be blended should be 0.00 parts per 100 parts by mass in total of the vinylidene fluoride-based resin and the methacrylic acid ester-based resin of the back layer. It is preferably 1 part by mass or more and 2 parts by mass or less, more preferably 0.2 parts by mass or more and 0.8 parts by mass or less, and further preferably 0.3 parts by mass or more and 0.7 parts by mass or less. more preferred.
- the back layer contains an ultraviolet absorber, other resins, plasticizers, heat stabilizers, antioxidants, A light stabilizer, a crystal nucleating agent, an antiblocking agent, a sealability improving agent, a release agent, a coloring agent, a pigment, a foaming agent, a flame retardant, and the like can be appropriately contained.
- the total content of the methacrylate ester-based resin, the vinylidene fluoride-based resin, and the fine particles in the back layer is 90% by mass or more, typically 95% by mass or more, and more typically is 97% by mass or more, and may be 100% by mass.
- the back layer preferably contains an ultraviolet absorber.
- an ultraviolet absorber By containing an ultraviolet absorber in the back layer, ultraviolet rays are blocked and weather resistance can be effectively improved.
- UV absorbers include, but are not limited to, hydroquinone-based, triazine-based, benzotriazole-based, benzophenone-based, cyanoacrylate-based, oxalic acid-based, hindered amine-based, salicylic acid derivatives, and the like. Two or more kinds can be used in combination. Among them, it is preferable to contain a triazine-based compound, a benzotriazole-based compound, or a mixture thereof from the standpoint of the durability of the ultraviolet shielding effect.
- the blending amount of the ultraviolet absorber in the back layer is preferably 0.1 to 10 parts by mass with respect to a total of 100 parts by mass of the vinylidene fluoride-based resin and the methacrylic acid ester-based resin in the back layer.
- the compounding amount of the ultraviolet absorber in the back layer is 0.1 part by mass or more, preferably 1 part by mass, with respect to a total of 100 parts by mass of the vinylidene fluoride-based resin and the methacrylic acid ester-based resin in the back layer.
- the amount is 10 parts by mass or less, preferably 5 parts by mass or less, thereby preventing the ultraviolet absorber from bleeding out to the film surface. can be prevented and cost savings can be realized.
- the number of protrusions present on the outer surface of the back layer which is counted using a white light interferometer, has a height of 0.2 ⁇ m or more with respect to the average plane. is 400 or less per area of 697 ⁇ m ⁇ 539 ⁇ m, and the protrusions present on the outer surface of the back surface layer that are counted using a white interferometer and have a height of 1.0 ⁇ m or more with respect to the average surface
- the number of protrusions is 10 or less per area of 697 ⁇ m ⁇ 539 ⁇ m. Satisfying the conditions means that the outer surface of the back layer has high smoothness, and the distortion of the design applied to the decorative layer etc. present in the lower layer of the laminated film that is visible through the laminated film is suppressed. Contribute to suppression.
- the number of protrusions present on the outer surface of the back surface layer, which are counted using a white light interferometer, and have a height of 0.2 ⁇ m or more with respect to the average plane is 400 or less per area of 697 ⁇ m ⁇ 539 ⁇ m. preferably 300 or less, and even more preferably 200 or less.
- the number of protrusions having a height of 0.2 ⁇ m or more is preferably 30 or more, more preferably 50 or more per area of 697 ⁇ m ⁇ 539 ⁇ m. , is even more preferably 100 or more.
- the number of protrusions having a height of 0.2 ⁇ m or more is preferably 30 or more and 400 or less, more preferably 50 or more and 300 or less per area of 697 ⁇ m ⁇ 539 ⁇ m, and 100 It is even more preferable that the number is 1 or more and 200 or less.
- the number of projections present on the outer surface of the back surface layer, which are counted using a white light interferometer, and have a height of 1.0 ⁇ m or more with respect to the average surface is 10 or less per area of 697 ⁇ m ⁇ 539 ⁇ m. preferably 8 or less, and even more preferably 6 or less.
- the lower limit of the number of projections with a height of 1.0 ⁇ m or more is not particularly set, and 0 is most preferable from the viewpoint of smoothness and transparency, but from the viewpoint of ease of manufacture, 1 per area of 697 ⁇ m ⁇ 539 ⁇ m typically more than one.
- the surface layer does not need to contain fine particles. Therefore, the surface layer can have higher smoothness than the back layer. Therefore, the number of protrusions present on the outer surface of the surface layer counted using a white light interferometer and having a height of 0.2 ⁇ m or more with respect to the average surface is 300 or less per area of 697 ⁇ m ⁇ 539 ⁇ m. is preferably 200 or less, and even more preferably 100 or less.
- the lower limit of the number of projections with a height of 0.2 ⁇ m or more is not particularly set, and 0 is most preferable from the viewpoint of smoothness and transparency, but from the viewpoint of ease of manufacture, 1 per area of 697 ⁇ m ⁇ 539 ⁇ m typically more than one.
- the number of protrusions present on the outer surface of the surface layer counted using a white light interferometer and having a height of 1.0 ⁇ m or more with respect to the average surface is 10 per area of 697 ⁇ m ⁇ 539 ⁇ m. or less, more preferably 8 or less, and even more preferably 6 or less.
- the lower limit of the number of projections with a height of 1.0 ⁇ m or more is not particularly set, and 0 is most preferable from the viewpoint of smoothness and transparency, but from the viewpoint of ease of manufacture, 1 per area of 697 ⁇ m ⁇ 539 ⁇ m typically more than one.
- the arithmetic mean height (Sa) of the outer surface of the back layer according to ISO 25178 measured using a white light interferometer is 0.05 ⁇ m or less.
- Sa represents the average of the absolute values of the difference in height at each point with respect to the average surface of the outer surface of the back layer to be measured.
- the average plane specified when measuring Sa is the same as the average plane when obtaining the height of the convex portion described above.
- the number of convex portions is controlled as described above and Sa is 0.05 ⁇ m or less.
- the number of projections is not controlled, even if Sa is 0.05 ⁇ m or less, it cannot be said that sufficient smoothness is achieved. This is because Sa alone cannot suppress local distortion.
- the upper limit of Sa on the outer surface of the back layer is preferably 0.04 ⁇ m or less, more preferably 0.03 ⁇ m or less.
- the lower limit of Sa on the outer surface of the back layer is preferably 0.01 ⁇ m or more from the viewpoint of enhancing blocking resistance.
- the arithmetic mean height (Sa) of the outer surface of the surface layer according to ISO 25178 measured using a white light interferometer is 0.05 ⁇ m or less.
- the upper limit of Sa on the outer surface of the surface layer is preferably 0.04 ⁇ m or less, more preferably 0.03 ⁇ m or less.
- the lower limit of Sa on the outer surface of the surface layer is not particularly set, it is generally 0.01 ⁇ m or more, typically 0.02 ⁇ m or more, from the viewpoint of ease of manufacture.
- the haze of the laminated film according to one embodiment of the present invention is preferably 5% or less, more preferably 4% or less, from the viewpoint of enhancing transparency. , for example in the range of 1 to 5%.
- the total light transmittance measured based on JIS K7361-1:1997 of the laminated film according to one embodiment of the present invention is preferably 80% or more, and 85% or more, from the viewpoint of increasing transparency. more preferably 90% or more, and can be, for example, 80 to 95%.
- a laminated film according to an embodiment of the present invention can be produced, for example, by a melt coextrusion molding method in which a plurality of resins are adhesively laminated in a molten state using a plurality of extruders.
- the melt co-extrusion molding method includes a multi-manifold die method in which each layer is contacted and bonded at the tip of the T-die after making multiple resins into sheets, and a method in which multiple resins are bonded in a confluence device (feed block) and then There is a feed block die method that spreads into a sheet, and a dual slot die method that adheres each layer by contacting each layer at the tip of the outside of the T die after molding a plurality of resins into a sheet. It can also be manufactured by an inflation molding method using a round die.
- the laminated film can be produced by, for example, carrying out the following steps.
- Step 1 The resin composition for the surface layer and the resin composition for the back layer are mixed so that the average thickness of the resin composition for the surface layer is 1 to 40 ⁇ m and the average thickness of the resin composition for the back layer is 10 to 40 ⁇ m.
- Step 2 After being extruded from the outlet of the T die, at least the surface of the resin composition for the surface layer of the melt coextruded film is brought into contact with the surface of a metal roll whose temperature is adjusted to 20 to 60 ° C. Cooling process.
- a method of adjusting the temperature of the metal roll surface for example, a method of circulating a cooling medium such as cooling water inside the metal roll can be mentioned.
- a rubber touch roll is placed facing the metal roll, and a laminate of the resin composition for the surface layer and the resin composition for the back layer in a molten state extruded from the outlet of the T die is Pinching between the metal roll (cast roll) and the touch roll is more preferable from the viewpoint of transferring the smooth surface of the metal roll to the film.
- the surface temperature of the rubber touch roll is preferably 0 to 70° C., more preferably 0 to 30° C., from the viewpoint of suppressing transfer of the surface shape of the rubber roll.
- the surface roughness of the metal roll is small, and that the surface roughness of the touch roll is also small. This is because the surface roughness of the metal roll and the touch roll affects the surface properties of the laminated film. Therefore, the arithmetic mean roughness Ra measured based on JIS B0601:2001 on the surface of the metal roll is preferably 100 nm or less, more preferably 80 nm or less, and even more preferably 60 nm or less. , is even more preferably 40 nm or less, even more preferably 20 nm or less, and can be, for example, 10 to 100 nm.
- the arithmetic mean roughness Ra of the touch roll surface measured according to JIS B0601:2001 is preferably 150 nm or less, more preferably 120 nm or less, and can be, for example, 100 to 150 nm.
- a substrate may be laminated on the laminated film according to one embodiment of the present invention. Accordingly, in one embodiment, the present invention provides a film in which a substrate is laminated on the surface layer and/or the back layer of the laminated film.
- the average value of the total thickness of the film laminated with the base material is 50 to 1000 ⁇ m, it is preferable from the viewpoint of the workability and cost of bonding to automobile interior parts.
- base materials include layers such as anchor layers, decorative layers, protective layers, adhesive layers, printed layers, and metal deposition layers.
- One substrate may be used as a single layer, or a combination of two or more substrates may be used as a laminate.
- a decorative film typically a metallic decorative film
- the laminated film is laminated as the outermost layer with the surface layer (film containing vinylidene fluoride resin) facing outward.
- the decorative film is laminated directly or indirectly on the laminated film and the back layer side of the laminated film, and is given a design by one or more selected from printing, vapor deposition, painting, lamination, and coloring. and a decorated layer.
- laminate refers to a sheet-like decorative layer such as a resin sheet on which a pattern is printed.
- the metal-tone decorative film comprises the laminated film, an anchor layer, a metal-deposited layer, and an adhesive layer in this order, and the laminated film constitutes the outermost layer with the surface layer facing outward.
- the anchor layer may be made of, but not limited to, acrylic resins, nitrocellulose resins, polyurethane resins (including polyol resin as the main ingredient and cured with isocyanate resin as a curing agent), acrylic urethane resins (acrylic polyol resin as the main ingredient and cured with isocyanate resin as a curing agent), polyester resin, styrene-maleic acid resin, chlorinated PP resin, and the like.
- the anchor layer contains an acrylic resin from the viewpoint that the adhesiveness of the obtained film is more excellent.
- the metal deposition layer can contain, but is not limited to, metal such as indium.
- the metal deposition layer may contain various non-metals, metals, metal oxides and metal nitrides.
- the adhesive layer can contain various adhesives, adhesives, pressure sensitive adhesives (PSA: Pressure Sensitive Adhesive), and the like.
- PSA Pressure Sensitive Adhesive
- Examples of methods for laminating substrates on the laminated film according to one embodiment of the present invention include adhesive lamination and thermal lamination. Other known lamination methods can also be employed.
- the laminated film can be thermoformed. As a method of thermoforming, for example, a method of laminating a base material on one side or both sides of the laminated film and then performing vacuum forming, pressure forming, or vacuum pressure forming can be used.
- Methods for coating the surface of articles such as automobile interior parts with a decorative film, especially a metallic decorative film include, for example, film insert molding, in-mold molding, and vacuum lamination molding (such as TOM molding). (including vacuum and pressure molding). Film insert molding, in particular, performs preforming by heating the decorative film. There is an advantage that a surface covering state can be realized.
- Vinylidene fluoride resin The following materials were prepared as vinylidene fluoride resin (PVDF). ⁇ Kynar740 (trade name) manufactured by Arkema (homopolymer of vinylidene fluoride, melting point 168° C., specific gravity 1.78 g/cm 3 ) (abbreviation: K740) ⁇ Methacrylate ester resin> The following materials were prepared as the methacrylic acid ester-based resin. ⁇ Sumitomo Chemical Co., Ltd.
- the average particle size is the D50 value (volume basis) of particle size distribution measured using a laser diffraction/scattering method.
- the D50 value is sometimes called a median diameter, and is a particle diameter at which the cumulative particle size distribution from the smaller particle diameter side is 50%.
- Examples of the measuring device include Mastersizer 2000 (manufactured by Malvern Panalytical).
- the compound for the surface layer and the compound for the back layer are melted and co-extruded using two single-screw extruders of ⁇ 40 mm and a feed block type T-die multilayer extruder with a feed block and a T-die attached to the tip, While conveying the extruded film-shaped resin composition at a conveying speed of 6.7 m / min, a metal roll (surface temperature: about 20 ° C.) and a rubber touch roll (surface temperature: 40° C.) and cooled to obtain a laminated film.
- the arithmetic mean roughness Ra measured based on JIS B0601: 2001 on the surface of the metal roll was measured by a contact surface roughness meter ("SJ210" manufactured by Mitutoyo Co., Ltd.), and was 0.013 ⁇ m. Met.
- the arithmetic mean roughness Ra measured based on JIS B0601: 2001 on the surface of the touch roll was measured by a contact surface roughness meter ("SJ210" manufactured by Mitutoyo Co., Ltd.) and was 0.116 ⁇ m. .
- Blocking resistance For each laminated film produced under the above conditions, 10 A4 size sample films were cut out. Ten sheets of the cut sample film were stacked with the same surface facing upward, a stainless steel plate was placed thereon, and a weight of 1 kg was further placed thereon. In that state, it was left at a temperature of 50° C. for 24 hours. After that, the weight was removed, and the edge of the uppermost sample film was held with one hand and peeled in the direction of 90°. Blocking resistance was evaluated according to the following criteria. Table 1 shows the results. ⁇ : The second and subsequent films from the top are not lifted and can be smoothly peeled off with one hand. x: The second and subsequent films from the top are lifted.
- the recycled material can be blended without deterioration in transparency, smoothness, and mechanical properties.
- the back layer contains 5 parts by mass of vinylidene fluoride resin. be.
- the ratio of the vinylidene fluoride resin contained in the back layer is 5.5 parts by mass. .
- the mass ratio of the vinylidene fluoride resin to the mass of the recycled material is 30% (the specific gravity of the surface layer calculated based on the specific gravity and blending amount of each material is 1.60, and the specific gravity of the back layer is 1.22, and the weight ratio of the surface layer and the back layer calculated based on the specific gravity and thickness of each layer is 0.39:0.61, and the vinylidene fluoride contained in the surface layer in all layers.
- the methacrylic acid ester-based resin contained in the back layer was small, and the anti-blocking property was deteriorated.
- the laminated films of Comparative Examples 9 and 10 had poor blocking resistance because the back layer did not contain fine particles.
- excellent anti-blocking property and high smoothness were obtained because the formulation of the resin composition constituting the surface layer and the back layer and the average particle size of the fine particles were appropriate. .
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Abstract
Description
フッ化ビニリデン系樹脂及びメタクリル酸エステル系樹脂の合計100質量部に対して、フッ化ビニリデン系樹脂60~80質量部とメタクリル酸エステル系樹脂20~40質量部とを含む樹脂組成物で構成された表面層と、フッ化ビニリデン系樹脂及びメタクリル酸エステル系樹脂の合計100質量部に対して、フッ化ビニリデン系樹脂0~30質量部とメタクリル酸エステル系樹脂70~100質量部とを含み、更に粒径が0.2μm以上の微粒子を含む樹脂組成物で構成され、前記表面層に積層された裏面層を備える積層フィルムであって、
前記微粒子の平均粒子径が1.0μm未満であり、
白色干渉計を用いて計数される前記裏面層の外表面に存在する凸部であって、平均面に対する高さが0.2μm以上の凸部の個数が697μm×539μmの面積当たり400個以下であり、且つ、
白色干渉計を用いて計数される前記裏面層の外表面に存在する凸部であって、平均面に対する高さが1.0μm以上の凸部の個数が697μm×539μmの面積当たり10個以下である、
積層フィルム。
[2]
前記裏面層に含まれる微粒子の含有量が、裏面層のフッ化ビニリデン系樹脂及びメタクリル酸エステル系樹脂の合計100質量部に対して、0.1質量部以上2質量部以下である、[1]に記載の積層フィルム。
[3]
白色干渉計を用いて測定される前記裏面層の外表面のISO 25178に準拠した算術平均高さ(Sa)が0.05μm以下である[1]又は[2]に記載の積層フィルム。
[4]
JIS K7136:2000に基づいて測定されるヘーズが5%以下である[1]~[3]の何れか一項に記載の積層フィルム。
[5]
[1]~[4]の何れか一項に記載の積層フィルムと、当該積層フィルムの裏面層側に直接又は間接的に積層され、印刷、蒸着、塗装、ラミネート、及び着色から選択される一種以上による意匠が付与された加飾層とを備えた加飾フィルム。
一実施形態において、表面層はフッ化ビニリデン系樹脂及びメタクリル酸エステル系樹脂を含有する。表面層におけるフッ化ビニリデン系樹脂とメタクリル酸エステル系樹脂の混合比は、両者の合計100質量部に対して、フッ化ビニリデン系樹脂:メタクリル酸エステル系樹脂=60~80質量部:20~40質量部であることが好ましく、62.5~77.5質量部:22.5~37.5質量部であることがより好ましく、65~75質量部:25~35質量部であることが更により好ましい。フッ化ビニリデン系樹脂及びメタクリル酸エステル系樹脂の合計100質量部に対して、フッ化ビニリデン系樹脂が60質量部以上であると、耐薬品性、耐候性及び耐汚染性等の特性を向上させることができる。また、表面層がメタクリル酸エステル系樹脂を少量含有することで、裏面層との接着性及び密着性を向上させることができる。
一実施形態において、裏面層はメタクリル酸エステル系樹脂を主成分とする。具体的には裏面層は、耐ブロッキング性及び透明性を高めるため、メタクリル酸エステル系樹脂を70質量%以上含有する。裏面層はフッ化ビニリデン系樹脂を含有しなくてもよいが、製造工程で生じた積層フィルムの端材を裏面層に再利用できる点で含有することが好ましい。具体的には、裏面層におけるフッ化ビニリデン系樹脂とメタクリル酸エステル系樹脂の混合比は、両者の合計100質量部に対して、フッ化ビニリデン系樹脂:メタクリル酸エステル系樹脂=0~30質量部:70~100質量部であることが好ましく、0~20質量部:80~100質量部であることがより好ましく、0~10質量部:90~100質量部であることが更により好ましい。
本発明の一実施形態に係る積層フィルムは、白色干渉計を用いて計数される裏面層の外表面に存在する凸部であって、平均面に対する高さが0.2μm以上の凸部の個数が697μm×539μmの面積当たり400個以下であり、且つ、白色干渉計を用いて計数される前記裏面層の外表面に存在する凸部であって、平均面に対する高さが1.0μm以上の凸部の個数が697μm×539μmの面積当たり10個以下である。当該条件を満足することは、裏面層の外表面の平滑性が高いことを意味し、積層フィルムを介して視認される積層フィルムの下層に存在する加飾層等に施された意匠の歪みを抑制することに寄与する。
本発明の一実施形態に係る積層フィルムは、例えば複数の押出成形機を利用して複数の樹脂を溶融状態で接着積層する溶融共押出成形法により製造可能である。溶融共押出成形法には、複数の樹脂をシートの状態にした後に、Tダイ内部の先端で各層を接触接着するマルチマニホールドダイ方式と、複数の樹脂を合流装置(フィードブロック)内で接着後にシート状に拡げるフィードブロックダイ方式と、複数の樹脂をシートの状態に成形した後、Tダイ外部の先端で各層を接触させて接着するデュアルスロットダイ方式がある。また丸型ダイを使用するインフレーション成形法でも製造可能である。
工程1:表面層用の樹脂組成物及び裏面層用の樹脂組成物を、表面層用の樹脂組成物の平均厚みが1~40μmであり、裏面層用の樹脂組成物の平均厚みが10~100μmとなるように、200~260℃の温度でTダイからフィルム状に溶融共押出成形する工程。
工程2:Tダイの出口から押し出された後、溶融共押出成形されたフィルムの少なくとも表面層用の樹脂組成物側の表面を20~60℃に温度調節された金属ロールの表面に接触させて冷却する工程。
本発明の一実施形態に係る積層フィルムには、基材を積層してもよい。従って、本発明は一実施形態において、当該積層フィルムの表面層及び/又は裏面層に基材が積層されたフィルムが提供される。基材が積層されたフィルムの総厚みの平均値が、50~1000μmであると、自動車内装用部品への接着の作業性やコストの点で好ましい。
<<表面層用>>
<フッ化ビニリデン系樹脂>
フッ化ビニリデン系樹脂(PVDF)として、以下の材料を用意した。
・アルケマ社製の商品名Kynar740(フッ化ビニリデンのホモポリマー、融点168℃、比重1.78g/cm3)(略称:K740)
<メタクリル酸エステル系樹脂>
メタクリル酸エステル系樹脂として、以下の材料を用意した。
・住友化学株式会社「スミペックスMGSS」(Tg101℃のポリメタクリル酸メチル、比重1.19g/cm3)(略称:MGSS)
<<裏面層用>>
<フッ化ビニリデン系樹脂>
フッ化ビニリデン系樹脂(PVDF)として、以下の材料を用意した。
・アルケマ社製の商品名Kynar720(フッ化ビニリデンのホモポリマー、融点168℃、比重1.78g/cm3)(略称:K720)
<メタクリル酸エステル系樹脂>
メタクリル酸エステル系樹脂として、以下の材料を用意した。
・三菱ケミカル株式会社製「ハイペットHBS000」(アクリル酸ブチル(n-BA)とメタクリル酸ブチル(BMA)のゴム成分を含むTgが97℃のメタクリル酸エステル系樹脂、比重1.19g/cm3)(略称:HBS000)
<架橋(メタ)アクリル酸エステル系樹脂粒子>
架橋(メタ)アクリル酸エステル系樹脂粒子として、以下の材料を用意した。
・綜研化学株式会社製「MX-80H3wT」(架橋メタクリル酸メチル系樹脂粒子)(平均粒子径=0.8μm、比重1.19g/cm3)
・アイカ工業株式会社製「GM-0105」(架橋メタクリル酸メチル系樹脂粒子)(平均粒子径=2.5μm、比重1.19g/cm3)
・アイカ工業株式会社製「GM-0449S-2」(架橋メタクリル酸メチル系樹脂粒子)(平均粒子径=3.7μm、比重1.19g/cm3)
・アイカ工業株式会社製「GM-0806S」(架橋メタクリル酸メチル系樹脂粒子)(平均粒子径=8.2μm、比重1.19g/cm3)
なお、上記何れの種類の粒子においても0.2μm未満の粒径のものは実質的に存在しなかったため、配合する全量がフィルム中で架橋(メタ)アクリル酸エステル系樹脂粒子(微粒子)を構成するとみなして差し支えない。
平均粒子径は、レーザー回折/散乱法を用いて測定された粒度分布のD50値(体積基準)のことである。D50値とは、メジアン径とも呼ぶことがあり、粒子径の小さい側からの積算粒度分布が50%となる粒子径のことである。測定装置は、例えばマスターサイザー 2000(Malvern Panalytical社製)が挙げられる。
<紫外線吸収剤>
紫外線吸収剤として、以下の材料を用意した。
・BASF社製のトリアジン系紫外線吸収剤「Tinuvin(登録商標)1600」
試験番号に応じて、表1に記載の配合処方に従って、φ30mmの2軸押出機によって材料を混練後、表面層用と裏面層用の各コンパウンドを得た。表面層用コンパウンド及び裏面層用コンパウンドをφ40mmの単軸押出機2台と先端にフィードブロック及びTダイを取り付けたフィードブロック方式のTダイ式多層押出機を使用して溶融共押出成形を行い、押し出されたフィルム状の樹脂組成物を、搬送速度6.7m/minで搬送しながら、冷却水が内部に流通する金属ロール(表面温度:約20℃)及びゴム製のタッチロール(表面温度:約40℃)で挟んで冷却し、積層フィルムを得た。ここで、金属ロールの表面における、JIS B0601:2001に基づいて測定される算術平均粗さRaを、接触式の表面粗さ計(株式会社ミツトヨ製「SJ210」)により測定したところ、0.013μmであった。タッチロールの表面における、JIS B0601:2001に基づいて測定される算術平均粗さRaを、接触式の表面粗さ計(株式会社ミツトヨ製「SJ210」)により測定したところ、0.116μmであった。
<3-1.平均厚み>
上記の条件で作製した各積層フィルム(幅方向の長さ800mm)について、共焦点式レーザー顕微鏡(株式会社キーエンス製「VK-X100」)を使用して、断面を倍率2000倍で観察し、表面層及び裏面層の各厚みを2点間距離に基づき計測した。測定は流れ方向(MD)の任意の1箇所についてフィルム幅方向(TD)に50mm間隔で17箇所行ない、その平均値を測定値とした。結果を表1に示す。
上記の条件で作製した各積層フィルムについて、A4版の大きさのサンプルフィルムを10枚切り取った。切り取ったサンプルフィルムを同じ面が上になるように10枚重ね、その上にステンレス板を置き、さらにその上に1kgの重りを置いた。その状態で50℃の温度下で24時間放置した。その後、重りを取り除き、一番上のサンプルフィルムの端縁を片手で持ち、90°の方向に剥離した。耐ブロッキング性を下記の基準で評価した。結果を表1に示す。
○:上から2枚目以降のフィルムが持ち上がることなく、片手で滑らかに剥離できる。
×:上から2枚目以降のフィルムが持ち上がる。
上記の条件で作製した各積層フィルムの裏面層の外表面について、白色干渉計(株式会社日立ハイテク製「ナノ3D光干渉計測システム VS1800」)を使用し、ISO 25178に準拠した算術平均高さ(Sa)を測定した。測定条件は以下とした。結果を表1に示す。
・鏡筒レンズ0.5倍、対物レンズ50倍
・測定範囲/697μm×539μm(4×3ステッチング、オーバーラップ率30%)
・測定モード/wave
・面補正/4次
なお、積層フィルムの表面層の外表面の算術平均高さ(Sa)は何れの実施例及び比較例においても、0.01~0.05μmの範囲であった。
上記の条件で作製した各積層フィルムの裏面層の外表面について、白色干渉計(株式会社日立ハイテク製「ナノ3D光干渉計測システム VS1800」)を使用し、697μm×539μmの面積当たりの平均面に対する高さが0.2μm以上の凸部及び1.0μm以上の凸部の個数を測定した。測定条件は以下とした。結果を表1に示す。
・鏡筒レンズ0.5倍、対物レンズ50倍
・測定範囲/697μm×539μm(4×3ステッチング、オーバーラップ率30%)
・測定モード/wave
・面補正/4次
・平均面/Sa測定時に特定される平均面
なお、積層フィルムの表面層の外表面については、何れの実施例及び比較例においても、697μm×539μmの面積当たりの平均面に対する高さが0.2μm以上の凸部の個数は0~10個の範囲であり、697μm×539μmの面積当たりの平均面に対する高さが1.0μm以上の凸部の個数は0~2個の範囲であった。
上記の条件で作製した各積層フィルムについて、ヘーズメーター(日本電色工業株式会社製「NDH7000」)を使用し、25℃におけるJIS K7361-1:1997に基づく全光線透過率を求めた。結果を表1に示す。
上記の条件で作製した各積層フィルムについて、ヘーズメーター(日本電色工業株式会社製「NDH7000」)を使用し、25℃におけるJIS K7136:2000に基づくヘーズ値を測定した。結果を表1に示す。
上記の条件で作製した各積層フィルムの端材を再生材として裏面層に再利用する場合、裏面層のフッ化ビニリデン系樹脂の配合量は所定の配合量より増加する。再生材の配合可能な最大量は、裏面層に含まれるフッ化ビニリデン系樹脂の配合量が+10%となるときの再生材の配合量とした。ただし、再生材を配合する場合でも、微粒子の配合量は変動しない。微粒子の配合量が変動しない場合で、フッ化ビニリデン系樹脂の配合量の変動が+10%以内であれば、透明性、平滑性、機械物性が悪化することなく再生材を配合することができる。例えば、実施例5は裏面層にフッ化ビニリデン系樹脂が5質量部含まれる配合処方であるが、再生材を配合する場合はフッ化ビニリデン系樹脂の含有量が5.5質量部まで許容される。フッ化ビニリデン系樹脂及びメタクリル酸エステル系樹脂の合計100質量部に対し、再生材を2質量部配合することで、裏面層に含まれるフッ化ビニリデン系樹脂の割合が5.5質量部となる。このとき、再生材の質量に占めるフッ化ビニリデン系樹脂の質量割合は30%である(各材料の比重と配合量を元に計算される表面層の比重は1.60、裏面層の比重は1.22であり、各層の比重と各層の厚みを元に計算される表面層と裏面層の重量比は0.39:0.61であり、全層に占める表面層に含まれるフッ化ビニリデン系樹脂の割合は70×0.39=27.3%、全層に占める裏面層に含まれるフッ化ビニリデン系樹脂の割合は5×0.61=3.05%で、27.3+3.05=30.35%)。結果を表1に示す。
比較例1~6の積層フィルムは、裏面層に含まれる微粒子の平均粒子径が大きすぎた。そのため、ヘーズ及び全光線透過率は良好であるものの、高さが0.2μm以上の凸部及び1.0μm以上の凸部の少なくとも一方の個数密度が高くなった。
比較例7の積層フィルムは、裏面層に含まれる微粒子の含有量が多すぎた。そのため、ヘーズ及び全光線透過率は良好であるものの、高さが0.2μm以上の凸部の個数密度が高くなった。
比較例8及び比較例9の積層フィルムは、裏面層に含まれるメタクリル酸エステル系樹脂が少なく、耐ブロッキング性が悪化した。
比較例9及び比較例10の積層フィルムは、裏面層が微粒子を含有しないため、耐ブロッキング性が悪化した。
一方、実施例1~10は、表面層及び裏面層を構成する樹脂組成物の配合処方及び微粒子の平均粒子径が適切であったことから、優れた耐ブロッキング性と高い平滑性が得られた。
10 表面層
20 裏面層
Claims (5)
- フッ化ビニリデン系樹脂及びメタクリル酸エステル系樹脂の合計100質量部に対して、フッ化ビニリデン系樹脂60~80質量部とメタクリル酸エステル系樹脂20~40質量部とを含む樹脂組成物で構成された表面層と、フッ化ビニリデン系樹脂及びメタクリル酸エステル系樹脂の合計100質量部に対して、フッ化ビニリデン系樹脂0~30質量部とメタクリル酸エステル系樹脂70~100質量部とを含み、更に粒径が0.2μm以上の微粒子を含む樹脂組成物で構成され、前記表面層に積層された裏面層を備える積層フィルムであって、
前記微粒子の平均粒子径が1.0μm未満であり、
白色干渉計を用いて計数される前記裏面層の外表面に存在する凸部であって、平均面に対する高さが0.2μm以上の凸部の個数が697μm×539μmの面積当たり400個以下であり、且つ、
白色干渉計を用いて計数される前記裏面層の外表面に存在する凸部であって、平均面に対する高さが1.0μm以上の凸部の個数が697μm×539μmの面積当たり10個以下である、
積層フィルム。 - 前記裏面層に含まれる微粒子の含有量が、裏面層のフッ化ビニリデン系樹脂及びメタクリル酸エステル系樹脂の合計100質量部に対して、0.1質量部以上2質量部以下である、請求項1に記載の積層フィルム。
- 白色干渉計を用いて測定される前記裏面層の外表面のISO 25178に準拠した算術平均高さ(Sa)が0.05μm以下である請求項1又は2に記載の積層フィルム。
- JIS K7136:2000に基づいて測定されるヘーズが5%以下である請求項1~3の何れか一項に記載の積層フィルム。
- 請求項1~4の何れか一項に記載の積層フィルムと、当該積層フィルムの裏面層側に直接又は間接的に積層され、印刷、蒸着、塗装、ラミネート、及び着色から選択される一種以上による意匠が付与された加飾層とを備えた加飾フィルム。
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JP2012187934A (ja) | 2008-06-10 | 2012-10-04 | Kaneka Corp | フッ素樹脂積層アクリル系樹脂フィルム及びそれを含む成形品 |
WO2015137309A1 (ja) * | 2014-03-13 | 2015-09-17 | 三菱レイヨン株式会社 | アクリル樹脂組成物及びその製造方法、並びにアクリル樹脂フィルム |
JP2016044300A (ja) * | 2014-08-20 | 2016-04-04 | 三菱レイヨン株式会社 | アクリル樹脂フィルム、並びにそれを用いた再帰反射シート及び再帰反射物品 |
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JP2021123082A (ja) | 2020-02-10 | 2021-08-30 | 尾池工業株式会社 | 金属調加飾フィルム、金属調車両内外装部材、金属調成形体 |
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JP4580066B2 (ja) * | 2000-07-10 | 2010-11-10 | 株式会社クレハ | フッ素系樹脂積層体及びそれからなる成形体 |
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JP2012187934A (ja) | 2008-06-10 | 2012-10-04 | Kaneka Corp | フッ素樹脂積層アクリル系樹脂フィルム及びそれを含む成形品 |
JP2010275434A (ja) * | 2009-05-29 | 2010-12-09 | Nippon Shokubai Co Ltd | 光学フィルムの製造方法 |
WO2011142453A1 (ja) | 2010-05-14 | 2011-11-17 | 三菱レイヨン株式会社 | フィルム、その製造方法、積層フィルムもしくはシート、および積層体 |
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JP2016044300A (ja) * | 2014-08-20 | 2016-04-04 | 三菱レイヨン株式会社 | アクリル樹脂フィルム、並びにそれを用いた再帰反射シート及び再帰反射物品 |
JP2017181990A (ja) * | 2016-03-31 | 2017-10-05 | 株式会社カネカ | 光学フィルムおよびその製造方法 |
WO2021161899A1 (ja) * | 2020-02-10 | 2021-08-19 | デンカ株式会社 | 樹脂フィルム及びその製造方法 |
JP2021123082A (ja) | 2020-02-10 | 2021-08-30 | 尾池工業株式会社 | 金属調加飾フィルム、金属調車両内外装部材、金属調成形体 |
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JPWO2023013406A1 (ja) | 2023-02-09 |
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