WO2009150800A1 - Transfer sheet containing interference fringe eliminator and decorative molded resin - Google Patents

Transfer sheet containing interference fringe eliminator and decorative molded resin Download PDF

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Publication number
WO2009150800A1
WO2009150800A1 PCT/JP2009/002512 JP2009002512W WO2009150800A1 WO 2009150800 A1 WO2009150800 A1 WO 2009150800A1 JP 2009002512 W JP2009002512 W JP 2009002512W WO 2009150800 A1 WO2009150800 A1 WO 2009150800A1
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WO
WIPO (PCT)
Prior art keywords
layer
light
transmission
reflection
thin film
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PCT/JP2009/002512
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French (fr)
Japanese (ja)
Inventor
笠原拓也
松本篤昌
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日本写真印刷株式会社
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Filing date
Publication date
Application filed by 日本写真印刷株式会社 filed Critical 日本写真印刷株式会社
Publication of WO2009150800A1 publication Critical patent/WO2009150800A1/en

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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
    • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17—Dry transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects

Definitions

  • the present invention relates to a transfer sheet used for decorating resin molded products and the like and decorative resin molded products. More specifically, the present invention relates to a transfer sheet that is a decorative means such as a metal thin film, and prevents interference fringes from being generated on the surface of a resin molded product after transfer. More specifically, the present invention relates to a decorative resin molded product in which interference fringes are prevented from occurring on the surface of the decorative resin molded product decorated with a metal thin film or the like.
  • a transfer sheet used for decorating a resin molded product and decorating a metal thin film is known.
  • a transfer sheet for example, a release layer, a front anchor layer, a metal thin film layer, a rear anchor layer, and an adhesive layer are laminated on a base film in the order of description.
  • a glossy layer for example, a gloss layer
  • FIG. 9 is a cross-sectional explanatory view illustrating incident light and reflected light in a conventional decorative resin molded product including a metal thin film layer.
  • the adhesive layer 124, the metal thin film layer 126, and the light transmission layer 111 are laminated in the order described on one surface of the molding resin 131.
  • a part of the incident light 161 that is visible light is reflected by the surface 151 of the light transmission layer 111.
  • the reflected light is referred to as surface reflected light 162.
  • a part of the incident light 161 is transmitted through the light transmission layer 111 and reaches the reflection / transmission boundary surface 131, and a part thereof is reflected.
  • the reflected light is referred to as interface reflected light 163.
  • the surface reflected light 162 and the interface reflected light 163 interfere with each other, and interference fringes are observed.
  • visible light means light having a wavelength of 380 nm to 780 nm.
  • the light transmission layer 111 is a homogeneous layer or a plurality of layers, interference fringes are generated.
  • the light transmission layer 111 is composed of two layers, a peeling layer and a front anchor layer. If the light transmissive layer allows the metal thin film layer to be visually observed through the light transmissive layer, the condition for generating interference fringes is satisfied.
  • the interference fringes are clearly visible.
  • the light reflectance of the laminated structure composed of the light transmission layer 111 and the metal thin film layer 126 is 5 to 50%, the interference fringes are clearly visible. If the light reflectance exceeds 50%, the reflected light from the metal thin film layer becomes dominant and the interference fringes are hardly visually recognized. If the light reflectance is less than 5%, the reflected light from the metal thin film layer becomes inferior, and the interference fringes are hardly visually recognized.
  • light transmission, light transmittance, light reflection, and light reflectance indicate properties relating to light in the wavelength range of 380 nm to 780 nm.
  • FIG. 10 is an explanatory cross-sectional view illustrating incident light and reflected light in a conventional decorative molded product including a gloss layer.
  • a gloss layer 127 and a light transmission layer 111 are laminated in the order described on one surface side of the molding resin 131.
  • Part of the incident light 161 that is visible light is reflected by the surface 151 of the light transmission layer 111.
  • the reflected light is referred to as surface reflected light 162.
  • a part of the incident light 161 is transmitted through the light transmission layer 111 and reaches the surface 168 of the glossy layer 127, and a part thereof is reflected.
  • the reflected light is referred to as gloss layer reflected light 164.
  • the surface reflection light 162 and the glossy layer reflection light 164 are combined to form the total reflection light 165, and the total reflection light is visually observed.
  • the optical distance from the surface 151 of the light transmission layer 111 to the surface 168 of the glossy layer 127 is an integral multiple of the wavelength of incident / reflected light
  • the surface reflection light 162 and the glossy layer reflection light 164 are strengthened.
  • the total reflected light 165 increases.
  • the optical distance twice is an integer multiple of the wavelength and a difference between the half wavelength
  • the surface reflected light 162 and the glossy layer reflected light 164 cancel each other, and the total reflected light 165 is weakened.
  • FIG. 11 is a graph showing the spectral reflectance when the laminated structure in which the light transmission layer 111 and the gloss layer 127 are laminated is irradiated with visible light.
  • a graph 70 shown in FIG. 11A is an explanatory diagram of the spectral reflectance when the gloss layer is black
  • a graph 80 shown in FIG. 11B is an explanation of the spectral reflectance when the gloss layer is another color.
  • FIG. Spectral reflectance repeats maximum and minimum as the wavelength changes. In FIG. 11A, a first maximum point 71, a first minimum point 72, a second maximum point 73, a second minimum point 74, and the like appear alternately.
  • Interference fringes are easy to see when the average value of all change values in the visible light region is 0.5% or more with the reflectance values at the maximum and minimum points as change values. That is, the absolute value of the difference between the reflectance at the first maximum point 71 and the reflectance at the first minimum point 72, and the absolute value of the difference between the reflectance at the first minimum point 72 and the reflectance at the second minimum point When the absolute value of the difference between the reflectance at the second maximum point 73 and the reflectance at the second minimum point 74, the absolute value of the difference is obtained in the same manner, and the average value of these is 0.5% or more. Interference fringes are easier to see. Even in the graph 80 shown in FIG. 11B, there are a first maximum point 81, a first minimum point 82, a second maximum point 83, a second minimum point 84, and the like. It is.
  • the interference fringes are clearly visible. In other words, if the light reflectance of the laminated structure composed of the light transmission layer 111 and the gloss layer 127 is 3 to 10%, the interference fringes are clearly visible.
  • interference fringes occur in the decorative resin molded product after transfer in the transfer sheet that decorates the light transmission layer and the light reflection layer. Further, in the decorative resin molded product in which the light transmission layer and the light reflection layer are laminated, interference fringes are generated.
  • a transfer sheet according to an aspect of the present invention is a transfer sheet in which a light transmission layer and a light reflection layer are laminated on one surface of a base sheet, and is located anywhere between the light transmission layer and a reflection / transmission interface. Is a transfer sheet having a boundary surface that generates light scattering.
  • the light transmission layer may be a single layer or a plurality of layers.
  • the light reflecting layer is either a metal thin film layer or a gloss layer.
  • the light reflectance of the laminated structure in which the light transmission layer and the metal thin film layer are laminated is 5% to 50%.
  • the light reflectance is determined by measuring light reflected from the light transmission layer side.
  • a light transmission layer is formed on one surface of the base sheet, an anchor layer is laminated on the light transmission layer, a metal thin film layer is further laminated on the anchor layer, and adhesion is further performed.
  • the light transmission layer, the anchor layer, and the metal thin film layer on the transfer sheet may or may not contain an interference fringe preventing agent.
  • the layer structure on the transfer sheet is transferred to a resin molded product, and then the base sheet is removed.
  • the light reflectance of the decorative resin molded product is measured. The value of the light reflectance measured in this way is taken as the light reflectance of the laminated structure in which the light transmission layer and the metal thin film layer are laminated.
  • the light reflectance of the laminated structure in which the light transmission layer and the gloss layer are laminated is 3% to 10%.
  • the light reflectance is determined by measuring light reflected from the light transmission layer side.
  • a light-transmitting layer is formed on one surface of the base sheet
  • a gloss layer is laminated on the light-transmitting layer
  • a transfer sheet is further laminated on the gloss layer.
  • the light transmission layer and the gloss layer on the transfer sheet may or may not contain an interference fringe preventing agent.
  • the layer structure on the transfer sheet is transferred to a resin molded product, and then the base sheet is removed.
  • the light reflectance of the decorative resin molded product is measured. The value of the light reflectance measured in this way is taken as the light reflectance of the laminated structure in which the light transmission layer and the gloss layer are laminated.
  • the boundary surface that causes light scattering may be a transmission / transmission boundary surface that is a boundary surface between light transmission layers.
  • the transmission / transmission interface is located in the light transmission layer.
  • the boundary surface can be located in the light transmission layer when the light transmission layer is composed of a plurality of layers.
  • the boundary surface that causes light scattering may be a reflection / transmission boundary surface that is a boundary surface between the light reflection layer and the light transmission layer.
  • an interference fringe preventing agent composed of fine particles is included in one of the two layers sandwiching the boundary surface.
  • the interference fringe inhibitor may have an average particle size of 0.5 ⁇ m to 20 ⁇ m.
  • the light-scattering boundary surface may have a root mean square roughness of 0.1 ⁇ m to 5 ⁇ m.
  • the transfer sheet according to another preferred embodiment of the present invention is: A release layer that is a first light transmission layer is formed on one surface of the base sheet, an anchor layer that is a second light transmission layer is laminated on the release layer, and a light reflection layer is formed on the anchor layer.
  • a reflection / transmission interface which is an interface between the metal thin film layer and the anchor layer; By including an interference fringe inhibitor made of fine particles in the anchor layer, It is characterized by a boundary surface that causes light scattering.
  • the transfer sheet according to another preferred embodiment of the present invention is: A release layer, which is a light transmission layer, is formed on one surface of the base sheet, and a gloss layer is laminated on the release layer, and the light reflectance of the laminated structure including the release layer and the gloss layer is In a transfer sheet that is 3% to 10%, A reflection / transmission interface that is an interface between the light reflection layer and the light transmission layer, By including an interference fringe inhibitor made of fine particles in the gloss layer, It is characterized by a boundary surface that causes light scattering.
  • the decorative resin molded product according to another aspect of the present invention is A single layer or a plurality of light transmission layers are formed on the outermost surface side of the resin molded product, and a laminated structure comprising a metal thin film layer inside the light transmission layer and comprising the light transmission layer and the metal thin film layer
  • the metallic thin film layer having a light reflectance of 5% to 50% and a glossy layer, wherein the laminated structure comprising the light transmitting layer and the glossy layer has a light reflectance of 3% to 10%.
  • a light reflecting layer that is one layer selected from the group consisting of: A reflection / transmission boundary surface that is a boundary surface between the light reflection layer and the light transmission layer or a transmission / transmission interface surface that is a boundary surface between the light transmission layers;
  • an interference fringe preventing agent composed of fine particles in either the reflection / transmission interface or the two layers forming the transmission / transmission interface, It is characterized by a boundary surface that causes light scattering.
  • the decorative resin molded product according to a preferred embodiment of the present invention is A release layer that is a first light transmission layer is formed on the outermost surface side of the resin molded product, an anchor layer that is a second light transmission layer is laminated inside the release layer, and a light reflection layer is formed inside the anchor layer.
  • a reflection / transmission interface which is an interface between the metal thin film layer and the anchor layer; By including an interference fringe inhibitor made of fine particles in the anchor layer, It is characterized by a boundary surface that causes light scattering.
  • the decorative resin molded product according to another preferred embodiment of the present invention is A release layer, which is a light transmission layer, is formed on the outermost surface side of the resin molded product, and a gloss layer is laminated inside the release layer, and the light reflectance of the laminated structure including the release layer and the gloss layer
  • a reflection / transmission interface that is an interface between the light reflection layer and the light transmission layer, By including an interference fringe inhibitor made of fine particles in the gloss layer, It is characterized by a boundary surface that causes light scattering.
  • the transfer sheet of the present invention is a transfer sheet in which a boundary surface that causes light scattering is formed between the light transmission layer and the reflection / transmission boundary surface, along with other configurations, and a decorative molding obtained using the transfer sheet
  • the product has the advantage that it can suppress the generation of interference fringes and has a high decorative property.
  • the decorative resin molded product of the present invention together with other configurations, formed a boundary surface that causes light scattering between the light transmission layer and the reflection / transmission boundary surface. There are benefits to be gained.
  • FIG. 1 is an explanatory cross-sectional view of the first transfer sheet.
  • FIG. 2 is a cross-sectional explanatory view of the second transfer sheet.
  • FIG. 3 is a cross-sectional explanatory view of the first decorative resin molded product.
  • FIG. 4 is a cross-sectional explanatory view of a second decorative resin molded product.
  • FIG. 5 is a process explanatory view of a method for producing a decorated resin molded product by a simultaneous molding transfer method using the first transfer sheet.
  • FIG. 6 is a cross-sectional explanatory view illustrating incident light and reflected light in the first decorative resin molded product.
  • FIG. 7 is an explanatory diagram for explaining the surface state of the gloss layer
  • (a) is an explanatory diagram of the surface of the gloss layer containing the interference fringe preventing agent
  • (b) is a diagram of the gloss layer surface not containing the interference fringe preventing agent. It is explanatory drawing.
  • FIG. 8 is an explanatory diagram for explaining the expression of the thickness of the layer containing the interference fringe preventing agent.
  • FIG. 9 is an explanatory cross-sectional view illustrating incident light and reflected light in a conventional decorative resin molded product including a metal thin film layer.
  • FIG. 10 is an explanatory cross-sectional view illustrating incident light and reflected light in a conventional decorative resin molded product including a gloss layer.
  • FIG. 11 is an explanatory graph of spectral reflectance from a conventional decorative resin molded product including a glossy layer
  • (a) is a spectral reflectance graph from a conventional decorative resin molded product including a black glossy layer
  • (B) is the spectral reflectance graph from the conventional decorative resin molded product containing the gloss layer of another color.
  • FIG. 1 is an explanatory sectional view of a first transfer sheet 1 according to the present invention.
  • a release layer 22, an anchor layer 23, a metal thin film layer 26 and an adhesive layer 24 are sequentially laminated on one surface of a base sheet 21.
  • the release layer 22 and the anchor layer 23 are layers that transmit light.
  • the release layer 22 and the anchor layer 23 form a light transmission layer.
  • the metal thin film layer 26 is a light reflecting layer.
  • the metal thin film layer 26 is light semi-transmissive.
  • the boundary surface between the anchor layer 23 and the metal thin film layer 26 is a reflection / transmission boundary surface 13.
  • the two layers forming the reflection / transmission interface 13 are an anchor layer 23 and a metal thin film layer 26.
  • the anchor layer 23 which is one of these layers contains the interference fringe preventing agent 6 made of fine particles.
  • the base sheet 21 is a resin sheet such as polypropylene resin, polyethylene resin, polyamide resin, polyester resin, acrylic resin or polyvinyl chloride resin, metal foil such as aluminum foil or copper foil, glassine paper, coated paper.
  • resin sheet such as polypropylene resin, polyethylene resin, polyamide resin, polyester resin, acrylic resin or polyvinyl chloride resin, metal foil such as aluminum foil or copper foil, glassine paper, coated paper.
  • Cellulose-based sheets such as cellophane, or composites of the above respective sheets can be used.
  • the release layer 22 is a layer that becomes the outermost surface of the transfer object after transfer.
  • the release layer 2 can be made of acrylic resin, polyester resin, polyvinyl chloride resin, cellulose resin, rubber resin, polyurethane resin, polyvinyl acetate resin, or vinyl chloride-vinyl acetate copolymer system. Examples thereof include a resin and a copolymer such as an ethylene-vinyl acetate copolymer resin.
  • Examples of the method for forming the release layer 22 include a coating method such as a gravure coating method, a roll coating method, a comma coating method, and a lip coating method, and a printing method such as a gravure printing method and a screen printing method.
  • the anchor layer 23 is a layer that improves the adhesion between the release layer 22 and the metal thin film layer 26.
  • the anchor layer 23 contains the interference fringe preventing agent 6.
  • the material of the anchor layer 23 is a two-component cured urethane resin, a thermosetting urethane resin, a melamine resin, a cellulose ester resin, a chlorine-containing rubber resin, a chlorine-containing vinyl resin, an acrylic resin, an epoxy resin, or a vinyl resin.
  • a copolymer resin or the like can be used.
  • a gravure coating method As for the formation method of the anchor layer 3, after mixing the interference fringe preventing agent 6 described below into the anchor layer material, a gravure coating method, a roll coating method, a comma coating method, a coating method such as a lip coating method, a gravure printing method, There are printing methods such as screen printing.
  • the formation method of the metal thin film layer 26 is a vacuum deposition method, a sputtering method, an ion plating method, a plating method, or the like.
  • the material of the metal thin film is a metal such as aluminum, nickel, gold, platinum, chromium, iron, copper, tin, indium, silver, titanium, lead, or zinc, or an alloy or compound thereof.
  • the adhesive layer 24 adheres the surface layer of the decorated resin molded product and the metal thin film layer 26.
  • a known resin conventionally used for transfer sheets is used.
  • a known forming method conventionally used for transfer sheets may be selected.
  • the light reflectance of the laminated structure composed of the release layer 22, the anchor layer 23, and the metal thin film layer 26 is 5% to 50%.
  • a laminate structure composed of a release layer 22, an anchor layer 23 and a metal thin film layer 26 is formed on a base sheet, and a transfer sheet is further formed with an adhesive layer.
  • the light reflectivity of the said decorative resin molded product is measured, and let this measured value be the light reflectivity of a laminated structure.
  • the incident direction of light is the same as described in the means for solving the problem. This is because a conventional decorative resin molded product including a laminated structure having a light reflectance in the above range produces interference fringes.
  • FIG. 3 is a cross-sectional explanatory view of the first decorative resin molded product.
  • an adhesive layer 24, a metal thin film layer 26, an anchor layer 23, and a release layer 22 are sequentially laminated on one surface of a molded resin 31.
  • the metal thin film layer 26 is a light reflecting layer.
  • the metal thin film layer 26 is light semi-transmissive.
  • the release layer 22 and the anchor layer 23 are layers that transmit light.
  • the release layer 22 and the anchor layer 23 form a light transmission layer.
  • the first decorative resin molded product 3 is manufactured by transferring the first transfer sheet 1 to a molding resin, and each layer laminated is the same as the first transfer sheet 1.
  • the boundary surface between the anchor layer 23 and the metal thin film layer 26 is the reflection / transmission boundary surface 13.
  • the two layers forming the reflection / transmission interface 13 are an anchor layer 23 and a metal thin film layer 26.
  • the anchor layer 23 which is one of these layers contains the interference fringe preventing agent 6 made of fine particles.
  • FIG. 6 is an explanatory sectional view for explaining incident light and reflected light in the first decorative resin molded product.
  • incident light 61 When incident light 61 is irradiated on the first decorative resin molded product 3, a part of the incident light is reflected by the surface 15. The reflected light is referred to as surface reflected light 62.
  • a part of the incident light 61 is transmitted through the peeling layer 22 and the anchor layer 23 which are light transmission layers, and reaches the reflection / transmission interface 13.
  • the incident light 61 is scattered at the reflection / transmission boundary surface 13 and travels in different directions, for example, interface reflection light 63a, interface reflection light 63b, and interface reflection light 63c. For this reason, the interface reflected light that interferes with the surface reflected light 62 is reduced, and interference fringes are not observed. .
  • the first decorative resin molded product 3 is irradiated with light typified by sunlight having a spectrum continuously in the visible light region, and when light from a fluorescent lamp having a maximum peak in the visible light region is irradiated Even so, the advantage that interference fringes do not occur can be obtained.
  • the content of the interference fringe preventing agent 6 in the anchor layer material is usually 2 to 10% by weight, preferably 2 to 5% by weight. If it is within this range, the incident light is sufficiently scattered and the transparency of the anchor layer 3 is not impaired.
  • interference fringe prevention agent 6 there are no particular restrictions on the material of the interference fringe prevention agent 6, but for example, interference fringe prevention comprising inorganic substances such as silica, alumina, calcium carbonate, and barium sulfate, and organic polymers such as acrylic resin, polyethylene, urethane resin, polycarbonate, and polyamide. Agents.
  • the average particle diameter of the interference fringe preventing agent 6 is usually 0.5 ⁇ m to 20 ⁇ m, preferably 0.5 ⁇ m to 10 ⁇ m.
  • the interface that causes light scattering is preferably from 0.1 ⁇ m to 5 ⁇ m in terms of root mean square roughness.
  • the interface that causes light scattering is preferably from 0.1 ⁇ m to 5 ⁇ m in terms of root mean square roughness.
  • the roughness of the interface is less than 0.1 ⁇ m in terms of root mean square roughness, incident light is not sufficiently scattered.
  • the roughness of the interface exceeds 5 ⁇ m in terms of root mean square roughness, the uneven shape of the metal thin film layer 26 becomes conspicuous, and the decorativeness of the decorative resin molded product is lost.
  • FIG. 8 is a schematic cross-sectional view of a layer containing an interference fringe inhibitor.
  • the anchor layer 23 is considered to be fixed to the layer 28 immediately below by a thin layer material 231 surrounding the surface of the interference fringe preventing agent 6 particles.
  • the thickness d of the anchor layer is expressed by the thickness of the layer material.
  • the boundary surface that causes light scattering may be a transmission / transmission boundary surface.
  • An example of the transmission / transmission interface is the interface between the peeling layer 22 and the anchor layer 23.
  • an interference fringe preventing agent may be contained in the material for forming the release layer 22 and the release layer may be formed by coating or printing.
  • the reflection / transmission boundary surface that is in direct contact with the metal thin film layer is a surface that causes light scattering. This is because the light reflected at the boundary surface formed by the metal thin film layer can be directly scattered, and as a result, the generation of interference fringes can be suppressed most effectively.
  • FIG. 2 is a cross-sectional explanatory view of the second transfer sheet 2 according to the present invention.
  • the second transfer sheet 2 has a release layer 22, a gloss layer 27 and an adhesive layer 24 sequentially laminated on one surface of a base sheet 21.
  • the release layer 22 is a layer that transmits light.
  • the release layer 22 forms a light transmission layer.
  • the gloss layer 27 is a light reflecting layer.
  • the boundary surface between the peeling layer 22 and the gloss layer 27 is a reflection / transmission boundary surface 13.
  • the two layers forming the reflection / transmission interface 13 are a peeling layer 22 and a gloss layer 27.
  • Interference fringe preventing agent 6 made of fine particles is contained in gloss layer 27, which is one of these layers.
  • the reflection / transmission interface 13 is a boundary that causes light scattering.
  • FIG. 4 is a cross-sectional explanatory view of the second decorative resin molded product 4.
  • the adhesive layer 24, the gloss layer 27, and the release layer 22 are sequentially laminated on one surface of the molded resin 31.
  • the gloss layer 27 is a light reflecting layer.
  • the release layer 22 is a layer that transmits light.
  • the release layer 22 forms a light transmission layer.
  • the second decorative resin molded product 4 is manufactured by transferring the second transfer sheet 2 to a molding resin, and each layer laminated is the same as the second transfer sheet 2.
  • the boundary surface between the release layer 22 and the gloss layer 27 is a reflection / transmission boundary surface 13.
  • the two layers forming the reflection / transmission interface 13 are a peeling layer 22 and a gloss layer 27.
  • Interference fringe preventing agent 6 made of fine particles is contained in gloss layer 27, which is one of these layers.
  • the reflection / transmission interface 13 is an interface that causes light scattering.
  • the material of the gloss layer 27 is polyvinyl resin, polyamide resin, polyacrylic resin, polyurethane resin, polyvinyl acetal resin, polyester urethane type.
  • the gloss layer is desired to have a metallic color, pearl pigments in which titanium oxide is coated on metal particles such as aluminum, titanium, bronze, or mica can be used.
  • the light reflectance of the laminated structure composed of the release layer 22 and the gloss 27 is 3% to 10%.
  • a laminated structure composed of a release layer 22 and a glossy layer 27 is formed on a base sheet, a transfer sheet is further formed with an adhesive layer, and a decorative resin molded product is produced using the transfer sheet. create. And the light reflectivity of the said decorative resin molded product is measured, and let this measured value be the light reflectivity of a laminated structure.
  • the incident direction of light is the same as described in the means for solving the problem. This is because a conventional decorative resin molded product including a laminated structure having a light reflectance in the above range produces interference fringes.
  • the material, average particle diameter, content and the like of the interference fringe preventing agent are the same as those described for the anchor layer of the first transfer sheet and the first decorative resin molded product.
  • a normal printing method such as an offset printing method, a gravure printing method, or a screen printing method may be used.
  • FIG. 7 is an explanatory diagram for explaining the surface state of the gloss layer.
  • FIG. 7A is an explanatory diagram of the gloss layer surface containing the interference fringe preventing agent
  • FIG. 7B is an explanatory diagram of the gloss layer surface not including the interference fringe preventing agent.
  • the pigment particles 271 are closely arranged on the surface of the conventional gloss layer 127.
  • An example of pigment particles is carbon black particles having a primary particle size of several tens of nanometers. It is considered that the closely aligned pigment particles reflect light to generate interface reflected light, which causes interference fringes.
  • the gloss layer 27 according to the present invention in the second transfer sheet and the second decorative resin molded product contains the interference fringe preventing agent 6.
  • the pigment particles 271 cannot be closely arranged because of the interference fringe preventing agent 6. For this reason, it is considered that light scattering occurs on the surface of the gloss layer 27.
  • the decorative resin molded product according to the present invention can be manufactured by a transfer method using a transfer sheet.
  • the decorative resin molded product according to the present invention may be manufactured by sequentially forming layers on the surface of the molded resin.
  • transfer methods two most commonly used forms will be described.
  • the first form is a method for producing a decorative resin-formed product by the simultaneous transfer molding method by injection molding using the aforementioned transfer sheet.
  • FIG. 5 is a process explanatory view of a method for producing a decorated resin molded product by a simultaneous molding transfer method using the first transfer sheet. The manufacturing process proceeds in the order of FIGS. 5 (a), (b), (c), (d), and (e). In addition, illustration of a metal mold
  • the transfer sheet 1 is fed into a molding die composed of an A die 41 and a B die 42.
  • the A mold 41 and the B mold 42 are clamped, the molten resin is injected and filled into the cavity 43, and the transfer sheet is formed on the surface of the molded resin at the same time as the resin is molded. 1 is adhered.
  • the mold is cooled or allowed to cool naturally to solidify the molten resin. This state is shown in (c).
  • the second form is a method for producing a decorated resin molded product by the transfer method using the transfer sheet described above.
  • the adhesive layer side of the transfer sheet is brought into contact with the surface of the resin molded product.
  • a transfer machine such as a roll transfer machine equipped with a heat-resistant rubber-like elastic body such as silicon rubber or an up-down transfer machine
  • heat and pressure are transferred from the base sheet side of the transfer sheet via the heat-resistant rubber-like elastic body.
  • the adhesive layer adheres to the surface of the transfer object, and other layers also transfer to the surface of the transfer object.
  • the transfer object may be transparent, translucent, or opaque. Further, the transfer object may be colored or not colored.
  • Example 1 A melamine resin is applied to the entire surface of 1 ⁇ m thickness on one surface of a PET film as a base sheet, a 1 ⁇ m-thick release layer is formed thereon, and silica particles having an average particle diameter of 2 ⁇ m are formed thereon by 10% by weight.
  • the contained anchor layer was 1 ⁇ m thick, an aluminum thin film layer, and an adhesive layer made of acrylic resin was formed in order by a gravure printing method to obtain a transfer sheet.
  • the thickness of the aluminum thin film layer was 10 nm.
  • a decorative resin molded product was manufactured by a simultaneous molding transfer method.
  • the obtained decorative resin molded product was irradiated with visible light from a three-wavelength fluorescent lamp, no interference fringes were observed.
  • ⁇ Comparative Example 1> A melamine resin is applied on the entire surface of a PET film, which is a base sheet, to a thickness of 1 ⁇ m, a 1 ⁇ m-thick release layer is formed thereon, an anchor layer is 1 ⁇ m, an aluminum thin film layer, an acrylic resin A transfer sheet was obtained by sequentially forming an adhesive layer of 3 ⁇ m in thickness by a gravure printing method. The thickness of the aluminum thin film layer was 10 nm.
  • a decorative resin molded product was manufactured by a simultaneous molding transfer method.
  • the light reflectance of the decorative resin molded product that is, the light reflectance of the laminated structure including the release layer, the anchor layer, and the aluminum thin film layer was 20%.
  • the obtained decorative resin molding was irradiated with visible light from a three-wavelength fluorescent lamp, interference fringes were observed on the surface.
  • Example 2 A melamine resin is applied to the entire surface of 1 ⁇ m on one surface of a PET film as a base sheet, a 1 ⁇ m-thick release layer is formed thereon, and 10% by weight of silica particles having an average particle diameter of 2 ⁇ m are contained thereon.
  • a transfer layer was obtained by sequentially forming a gloss layer made of acrylic resin with a thickness of 3 ⁇ m and an adhesive layer made of acrylic resin with a thickness of 3 ⁇ m by a gravure printing method.
  • a decorative resin molded product was obtained by using the obtained transfer sheet in a simultaneous molding transfer method.
  • the obtained decorative resin molded product was irradiated with visible light from the three-wavelength fluorescent lamp on the surface, no interference fringes were observed on the surface.
  • ⁇ Comparative example 2> A melamine resin is applied to the entire surface of 1 ⁇ m on one surface of a PET film as a base sheet, a 1 ⁇ m-thick release layer is formed thereon, and a glossy layer made of an acrylic resin is formed thereon with a thickness of 3 ⁇ m.
  • a transfer sheet was obtained by sequentially forming an adhesive layer of 3 ⁇ m in thickness by a gravure printing method.
  • a decorative resin molded product was manufactured by a simultaneous molding transfer method.
  • the light reflectance of the decorative resin molded product that is, the light reflectance of the laminated structure composed of the release layer and the gloss layer was 5%.
  • the obtained decorative resin molding was irradiated with visible light from a three-wavelength fluorescent lamp, interference fringes were observed on the surface.
  • the present invention can be suitably used in various molded products such as communication devices such as mobile phones, automobile exterior parts, information equipment inside automobiles, and home appliances.

Abstract

A decorative molded resin which has, superposed thereon, one or more light-transmitting layers and a light-reflecting layer which is a metallic thin layer or a glossy layer.  The molded resin is prevented from having interference fringes.  In this decorative molded resin, the reflection/transmission boundary (13) which is the boundary between the light-reflecting layer and the light-transmitting layers or a transmission/transmission boundary which is the boundary between the light-transmitting layers functions as a boundary where light scattering occurs.  This light-scattering boundary has been formed by incorporating an interference fringe eliminator comprising fine particles into either of the two layers forming the boundary (into the light-transmitting layer (23) in the case of the decorative molded resin (3) shown in Fig. (6)).  Also disclosed is a transfer sheet for use in producing this decorative molded resin.

Description

干渉縞防止剤を含有する転写シートと加飾樹脂成形品Transfer sheet containing anti-interference fringe agent and decorative resin molded product
　この発明は樹脂成形品の加飾等に用いる転写シートと加飾樹脂成形品に関する。より詳しくは、この発明は、金属薄膜などの加飾手段である転写シートにおいて、転写後の樹脂成形品の表面に干渉縞発生を防止した転写シートに関する。また、より詳しくは、この発明は、金属薄膜などを加飾した加飾樹脂成形品において、その表面に干渉縞発生を防止した加飾樹脂成形品に関する。 The present invention relates to a transfer sheet used for decorating resin molded products and the like and decorative resin molded products. More specifically, the present invention relates to a transfer sheet that is a decorative means such as a metal thin film, and prevents interference fringes from being generated on the surface of a resin molded product after transfer. More specifically, the present invention relates to a decorative resin molded product in which interference fringes are prevented from occurring on the surface of the decorative resin molded product decorated with a metal thin film or the like.
　樹脂成形品の加飾等に用いる転写シートにあって、従来、金属薄膜を加飾する転写シートが知られている。このような転写シートの構成は、例えば、基体フィルム上に、剥離層、前アンカー層、金属薄膜層、後アンカー層、接着層が記載順に積層されている。（例えば特許文献１参照。）また、艶感のある層（以下、艶層という）を加飾するために用いる転写シートも知られている。 2. Description of the Related Art Conventionally, a transfer sheet used for decorating a resin molded product and decorating a metal thin film is known. In such a transfer sheet, for example, a release layer, a front anchor layer, a metal thin film layer, a rear anchor layer, and an adhesive layer are laminated on a base film in the order of description. (For example, refer patent document 1.) Moreover, the transfer sheet used in order to decorate a glossy layer (henceforth a gloss layer) is also known.
　ここで、金属薄膜層の光反射率が特定の値範囲にある場合には、上記の転写シートを用いて作成した加飾樹脂成形品に可視光を照射すると、干渉縞が見える。 Here, when the light reflectance of the metal thin film layer is in a specific value range, when the decorative resin molded product prepared using the transfer sheet is irradiated with visible light, interference fringes can be seen.
　図９は金属薄膜層を含む従来の加飾樹脂成形品における入射光、反射光を説明する断面説明図である。加飾樹脂成形品１０３は、成形樹脂１３１の一方表面に、接着層１２４、金属薄膜層１２６、光透過層１１１が記載順序に積層されている。可視光である入射光１６１は、その一部が光透過層１１１の表面１５１で反射される。当該反射光を表面反射光１６２とする。また、入射光１６１の一部分は光透過層１１１を透過して反射・透過境界面１３１に至り、その一部分が反射される。当該反射光を界面反射光１６３とする。表面反射光１６２と界面反射光１６３が干渉し、干渉縞が観察される。 FIG. 9 is a cross-sectional explanatory view illustrating incident light and reflected light in a conventional decorative resin molded product including a metal thin film layer. In the decorative resin molded product 103, the adhesive layer 124, the metal thin film layer 126, and the light transmission layer 111 are laminated in the order described on one surface of the molding resin 131. A part of the incident light 161 that is visible light is reflected by the surface 151 of the light transmission layer 111. The reflected light is referred to as surface reflected light 162. Further, a part of the incident light 161 is transmitted through the light transmission layer 111 and reaches the reflection / transmission boundary surface 131, and a part thereof is reflected. The reflected light is referred to as interface reflected light 163. The surface reflected light 162 and the interface reflected light 163 interfere with each other, and interference fringes are observed.
　ここで、可視光は波長３８０ｎｍ～７８０ｎｍの光を意味する。光透過層１１１は均質な一層であっても、複数の層であっても干渉縞が発生する。例えば、光透過層１１１は剥離層と前アンカー層の２層からなる。光透過層を透かして金属薄膜層が視覚観察可能となるような光透過層であれば、干渉縞発生の条件を満たす。 Here, visible light means light having a wavelength of 380 nm to 780 nm. Even if the light transmission layer 111 is a homogeneous layer or a plurality of layers, interference fringes are generated. For example, the light transmission layer 111 is composed of two layers, a peeling layer and a front anchor layer. If the light transmissive layer allows the metal thin film layer to be visually observed through the light transmissive layer, the condition for generating interference fringes is satisfied.
　加飾樹脂成形品１０３の光反射率が５～５０％であれば干渉縞が明瞭に視認される。換言すれば、光透過層１１１と金属薄膜層１２６からなる積層構造体の光反射率が５～５０％であれば干渉縞が明瞭に視認される。当該光反射率が５０％を超えれば金属薄膜層からの反射光が優勢となり干渉縞はほぼ視認されない。当該光反射率が５％に満たなければ、金属薄膜層からの反射光が劣勢となり、干渉縞はほぼ視認されない。 If the light reflectance of the decorative resin molded product 103 is 5 to 50%, the interference fringes are clearly visible. In other words, if the light reflectance of the laminated structure composed of the light transmission layer 111 and the metal thin film layer 126 is 5 to 50%, the interference fringes are clearly visible. If the light reflectance exceeds 50%, the reflected light from the metal thin film layer becomes dominant and the interference fringes are hardly visually recognized. If the light reflectance is less than 5%, the reflected light from the metal thin film layer becomes inferior, and the interference fringes are hardly visually recognized.
　本願発明と本願明細書において、光透過、光透過率、光反射と光反射率は、波長範囲３８０ｎｍ～７８０ｎｍの光に関する性質を示すものである。 In the present invention and the present specification, light transmission, light transmittance, light reflection, and light reflectance indicate properties relating to light in the wavelength range of 380 nm to 780 nm.
　加飾樹脂成形品において金属薄膜層に替わって艶層が在っても、干渉縞が発生する。図１０は艶層を含む従来の加飾成形品における入射光、反射光を説明する断面説明図である。加飾樹脂成形品１０４は、成形樹脂１３１の一方表面側に艶層１２７と光透過層１１１が記載順序に積層されている。 Even if a decorative resin molded product has a gloss layer instead of a metal thin film layer, interference fringes are generated. FIG. 10 is an explanatory cross-sectional view illustrating incident light and reflected light in a conventional decorative molded product including a gloss layer. In the decorative resin molded product 104, a gloss layer 127 and a light transmission layer 111 are laminated in the order described on one surface side of the molding resin 131.
　可視光である入射光１６１は、その一部が光透過層１１１の表面１５１で反射される。当該反射光を表面反射光１６２とする。また、入射光１６１の一部分は光透過層１１１を透過して艶層１２７の表面１６８に至り、その一部分が反射される。当該反射光を艶層反射光１６４とする。表面反射光１６２と艶層反射光１６４が合わさり全体反射光１６５となり、全体反射光が視覚観察される。 Part of the incident light 161 that is visible light is reflected by the surface 151 of the light transmission layer 111. The reflected light is referred to as surface reflected light 162. Further, a part of the incident light 161 is transmitted through the light transmission layer 111 and reaches the surface 168 of the glossy layer 127, and a part thereof is reflected. The reflected light is referred to as gloss layer reflected light 164. The surface reflection light 162 and the glossy layer reflection light 164 are combined to form the total reflection light 165, and the total reflection light is visually observed.
　光透過層１１１の表面１５１から艶層１２７の表面１６８までの光学的距離の２倍が、入射・反射光の波長の整数倍である場合に、表面反射光１６２と艶層反射光１６４が強め合い全体反射光１６５は強まる。前記光学的距離の２倍が、波長の整数倍と半波長の差がある場合、表面反射光１６２と艶層反射光１６４が打ち消し合い全体反射光１６５は弱まる。 When the optical distance from the surface 151 of the light transmission layer 111 to the surface 168 of the glossy layer 127 is an integral multiple of the wavelength of incident / reflected light, the surface reflection light 162 and the glossy layer reflection light 164 are strengthened. The total reflected light 165 increases. When the optical distance twice is an integer multiple of the wavelength and a difference between the half wavelength, the surface reflected light 162 and the glossy layer reflected light 164 cancel each other, and the total reflected light 165 is weakened.
　図１１は、光透過層１１１と艶層１２７が積層された積層構造体に可視光を照射した場合の分光反射率を示すグラフである。図１１（ａ）に示すグラフ７０は艶層が黒色の場合の分光反射率の説明図であり、図１１（ｂ）に示すグラフ８０は艶層が他の色の場合の分光反射率の説明図である。分光反射率は波長の変化に伴い極大と極小を繰り返す。図１１（ａ）では、第一極大点７１、第一極小点７２、第二極大点７３、第二極小点７４等等が交互に現れる。 FIG. 11 is a graph showing the spectral reflectance when the laminated structure in which the light transmission layer 111 and the gloss layer 127 are laminated is irradiated with visible light. A graph 70 shown in FIG. 11A is an explanatory diagram of the spectral reflectance when the gloss layer is black, and a graph 80 shown in FIG. 11B is an explanation of the spectral reflectance when the gloss layer is another color. FIG. Spectral reflectance repeats maximum and minimum as the wavelength changes. In FIG. 11A, a first maximum point 71, a first minimum point 72, a second maximum point 73, a second minimum point 74, and the like appear alternately.
　極大点と極小点での反射率の値を変化値として、可視光領域での全ての変化値の平均が０．５％以上である場合に、干渉縞が見えやすくなる。すなわち、第一極大点７１での反射率と第一極小点７２での反射率の差の絶対値、第一極小点７２での反射率と第二極小点での反射率の差の絶対値、第二極大点７３での反射率と第二極小点７４での反射率の差の絶対値、以下同様に差の絶対値を求め、これを平均した値が０．５％以上である場合に干渉縞が見えやすくなる。図１１（ｂ）に示すグラフ８０にあっても、第一極大点８１、第一極小点８２、第二極大点８３、第二極小点８４等等があり、その変化値を求める方法も同様である。 Interference fringes are easy to see when the average value of all change values in the visible light region is 0.5% or more with the reflectance values at the maximum and minimum points as change values. That is, the absolute value of the difference between the reflectance at the first maximum point 71 and the reflectance at the first minimum point 72, and the absolute value of the difference between the reflectance at the first minimum point 72 and the reflectance at the second minimum point When the absolute value of the difference between the reflectance at the second maximum point 73 and the reflectance at the second minimum point 74, the absolute value of the difference is obtained in the same manner, and the average value of these is 0.5% or more. Interference fringes are easier to see. Even in the graph 80 shown in FIG. 11B, there are a first maximum point 81, a first minimum point 82, a second maximum point 83, a second minimum point 84, and the like. It is.
　加飾樹脂成形品１０４の光反射率が３～１０％であれば干渉縞が明瞭に視認される。換言すれば、光透過層１１１と艶層１２７からなる積層構造体の光反射率が３～１０％であれば干渉縞が明瞭に視認される。 If the light reflectance of the decorated resin molded product 104 is 3 to 10%, the interference fringes are clearly visible. In other words, if the light reflectance of the laminated structure composed of the light transmission layer 111 and the gloss layer 127 is 3 to 10%, the interference fringes are clearly visible.
特開平７－６８９９７号公報Japanese Patent Laid-Open No. 7-68997
　解決しようとする問題点は、光透過層と光反射層を加飾する転写シートにおいて、転写後の加飾樹脂成形品に干渉縞が生じる点である。また、光透過層と光反射層が積層された加飾樹脂成形品において、干渉縞が生じる点である。 The problem to be solved is that interference fringes occur in the decorative resin molded product after transfer in the transfer sheet that decorates the light transmission layer and the light reflection layer. Further, in the decorative resin molded product in which the light transmission layer and the light reflection layer are laminated, interference fringes are generated.
　本発明のその他の課題は、本発明の説明により明らかになる。 Other problems of the present invention will become apparent from the description of the present invention.
　本発明の一の態様にかかる転写シートは、基体シートの一方表面上に、光透過層と光反射層が積層された転写シートにおいて、前記光透過層から反射・透過境界面の間のどこかを光散乱を生じる境界面とした転写シートである。 A transfer sheet according to an aspect of the present invention is a transfer sheet in which a light transmission layer and a light reflection layer are laminated on one surface of a base sheet, and is located anywhere between the light transmission layer and a reflection / transmission interface. Is a transfer sheet having a boundary surface that generates light scattering.
　光透過層は、単一層であってもよく、複数層であってもよい。光反射層は、金属薄膜層、または艶層のいずれかである。 The light transmission layer may be a single layer or a plurality of layers. The light reflecting layer is either a metal thin film layer or a gloss layer.
　金属薄膜層が選択される場合、光透過層と金属薄膜層が積層された積層構造体の光反射率は５％～５０％である。ここで光反射率は、光透過層側から光を入射してその反射光を計測して定める。実際の測定にあたっては、まず、基体シートの一方表面に光透過層を形成し、当該光透過層の上に、アンカー層を積層し、更にアンカー層の上に金属薄膜層を積層し、更に接着層を積層した転写シートを作成する。当該転写シート上の光透過層、アンカー層と金属薄膜層には干渉縞防止剤を含ませてもよく、含ませなくてもよい。次に、当該転写シート上の層構成物を樹脂成形品に転写し、その後に基体シートを取り除く。そして加飾樹脂成形品の光反射率を測定する。こうして測定した光反射率の値を、光透過層と金属薄膜層が積層された積層構造体の光反射率とする。 When the metal thin film layer is selected, the light reflectance of the laminated structure in which the light transmission layer and the metal thin film layer are laminated is 5% to 50%. Here, the light reflectance is determined by measuring light reflected from the light transmission layer side. In actual measurement, first, a light transmission layer is formed on one surface of the base sheet, an anchor layer is laminated on the light transmission layer, a metal thin film layer is further laminated on the anchor layer, and adhesion is further performed. Create a transfer sheet with layers. The light transmission layer, the anchor layer, and the metal thin film layer on the transfer sheet may or may not contain an interference fringe preventing agent. Next, the layer structure on the transfer sheet is transferred to a resin molded product, and then the base sheet is removed. Then, the light reflectance of the decorative resin molded product is measured. The value of the light reflectance measured in this way is taken as the light reflectance of the laminated structure in which the light transmission layer and the metal thin film layer are laminated.
　艶層が選択される場合、光透過層と艶層が積層された積層構造体の光反射率は３％～１０％である。ここで光反射率は、光透過層側から光を入射してその反射光を計測して定める。実際の測定にあたっては、まず、基体シートの一方表面に光透過層を形成し、当該光透過層の上に、艶層を積層し、更に艶層の上に接着層を積層した転写シートを作成する。当該転写シート上の光透過層と艶層には干渉縞防止剤を含ませてもよく、含ませなくてもよい。次に、当該転写シート上の層構成物を樹脂成形品に転写し、その後に基体シートを取り除く。そして加飾樹脂成形品の光反射率を測定する。こうして測定した光反射率の値を、光透過層と艶層が積層された積層構造体の光反射率とする。 When the gloss layer is selected, the light reflectance of the laminated structure in which the light transmission layer and the gloss layer are laminated is 3% to 10%. Here, the light reflectance is determined by measuring light reflected from the light transmission layer side. In actual measurement, first, a light-transmitting layer is formed on one surface of the base sheet, a gloss layer is laminated on the light-transmitting layer, and a transfer sheet is further laminated on the gloss layer. To do. The light transmission layer and the gloss layer on the transfer sheet may or may not contain an interference fringe preventing agent. Next, the layer structure on the transfer sheet is transferred to a resin molded product, and then the base sheet is removed. Then, the light reflectance of the decorative resin molded product is measured. The value of the light reflectance measured in this way is taken as the light reflectance of the laminated structure in which the light transmission layer and the gloss layer are laminated.
　光散乱を生じる境界面は、光透過層間の境界面である透過・透過境界面であってもよい。透過・透過境界面は光透過層の中に位置する。光透過層の中に当該境界面が位置することができるのは、光透過層が複数層からなる場合である。光散乱を生じる境界面は、光反射層と光透過層の境界面である反射・透過境界面であってもよい。 The boundary surface that causes light scattering may be a transmission / transmission boundary surface that is a boundary surface between light transmission layers. The transmission / transmission interface is located in the light transmission layer. The boundary surface can be located in the light transmission layer when the light transmission layer is composed of a plurality of layers. The boundary surface that causes light scattering may be a reflection / transmission boundary surface that is a boundary surface between the light reflection layer and the light transmission layer.
　そして、これら境界面を挟む２層のどちらか一方の層に、微細粒子よりなる干渉縞防止剤を含ませる。 Then, an interference fringe preventing agent composed of fine particles is included in one of the two layers sandwiching the boundary surface.
　本発明の好ましい実施態様にかかる転写シートにおいて、前記干渉縞防止剤の平均粒子径が０．５μｍ～２０μｍであってもよい。 In the transfer sheet according to a preferred embodiment of the present invention, the interference fringe inhibitor may have an average particle size of 0.5 μm to 20 μm.
　本発明の他の好ましい実施態様にかかる転写シートにおいて、前記光散乱を生じる境界面は、その二乗平均平方根粗さが０．１μｍ～５μｍであってもよい。 In the transfer sheet according to another preferred embodiment of the present invention, the light-scattering boundary surface may have a root mean square roughness of 0.1 μm to 5 μm.
　本発明の好ましい他の実施態様にかかる転写シートは、
　基体シートの一方表面上に、第一光透過層である剥離層が形成され、前記剥離層の上に第二光透過層であるアンカー層が積層され、前記アンカー層の上に光反射層である金属薄膜層が積層されていて、前記剥離層、前記アンカー層と前記金属薄膜層からなる積層構造体の光反射率が５％～５０％である転写シートにおいて、
　前記金属薄膜層と前記アンカー層の境界面である反射・透過境界面を、
　前記アンカー層に微細粒子よりなる干渉縞防止剤を含ませることにより、
　光散乱を生じる境界面としたことを特徴とする。 The transfer sheet according to another preferred embodiment of the present invention is:
A release layer that is a first light transmission layer is formed on one surface of the base sheet, an anchor layer that is a second light transmission layer is laminated on the release layer, and a light reflection layer is formed on the anchor layer. In a transfer sheet in which a certain metal thin film layer is laminated, and the light reflectance of the laminated structure composed of the release layer, the anchor layer and the metal thin film layer is 5% to 50%,
A reflection / transmission interface which is an interface between the metal thin film layer and the anchor layer;
By including an interference fringe inhibitor made of fine particles in the anchor layer,
It is characterized by a boundary surface that causes light scattering.
　本発明の好ましいその他の実施態様にかかる転写シートは、
　基体シートの一方表面上に、光透過層である剥離層が形成され、前記剥離層の上に艶層が積層されていて、前記剥離層と前記艶層からなる積層構造体の光反射率が３％～１０％である転写シートにおいて、
　前記光反射層と前記光透過層の境界面である反射・透過境界面を、
　前記艶層に微細粒子よりなる干渉縞防止剤を含ませることにより、
　光散乱を生じる境界面としたことを特徴とする。 The transfer sheet according to another preferred embodiment of the present invention is:
A release layer, which is a light transmission layer, is formed on one surface of the base sheet, and a gloss layer is laminated on the release layer, and the light reflectance of the laminated structure including the release layer and the gloss layer is In a transfer sheet that is 3% to 10%,
A reflection / transmission interface that is an interface between the light reflection layer and the light transmission layer,
By including an interference fringe inhibitor made of fine particles in the gloss layer,
It is characterized by a boundary surface that causes light scattering.
　本発明の他の態様にかかる加飾樹脂成形品は、
　樹脂成形品の最表面側に、単一層又は複数層の光透過層が形成され、前記光透過層の内側に、金属薄膜層であって前記光透過層と前記金属薄膜層からなる積層構造体の光反射率が５％～５０％である前記金属薄膜層と、艶層であって前記光透過層と前記艶層からなる積層構造体の光反射率が３％～１０％である艶層からなる群より選択される一の層である光反射層が積層された加飾樹脂成形品において、
　前記光反射層と前記光透過層の境界面である反射・透過境界面又は光透過層間の境界面である透過・透過境界面を、
　前記反射・透過境界面又は前記透過・透過境界面を形成する二の層のいずれかに微細粒子よりなる干渉縞防止剤を含ませることにより、
　光散乱を生じる境界面としたことを特徴とする。 The decorative resin molded product according to another aspect of the present invention is
A single layer or a plurality of light transmission layers are formed on the outermost surface side of the resin molded product, and a laminated structure comprising a metal thin film layer inside the light transmission layer and comprising the light transmission layer and the metal thin film layer The metallic thin film layer having a light reflectance of 5% to 50% and a glossy layer, wherein the laminated structure comprising the light transmitting layer and the glossy layer has a light reflectance of 3% to 10%. In a decorative resin molded product in which a light reflecting layer that is one layer selected from the group consisting of:
A reflection / transmission boundary surface that is a boundary surface between the light reflection layer and the light transmission layer or a transmission / transmission interface surface that is a boundary surface between the light transmission layers;
By including an interference fringe preventing agent composed of fine particles in either the reflection / transmission interface or the two layers forming the transmission / transmission interface,
It is characterized by a boundary surface that causes light scattering.
　本発明の好ましい実施態様にかかる加飾樹脂成形品は、
　樹脂成形品の最表面側に、第一光透過層である剥離層が形成され、前記剥離層の内側に第二光透過層であるアンカー層が積層され、前記アンカー層の内側に光反射層である金属薄膜層が積層されていて、前記剥離層、前記アンカー層と前記金属薄膜層からなる積層構造体の光反射率が５％～５０％である加飾樹脂成形品において、
　前記金属薄膜層と前記アンカー層の境界面である反射・透過境界面を、
　前記アンカー層に微細粒子よりなる干渉縞防止剤を含ませることにより、
　光散乱を生じる境界面としたことを特徴とする。 The decorative resin molded product according to a preferred embodiment of the present invention is
A release layer that is a first light transmission layer is formed on the outermost surface side of the resin molded product, an anchor layer that is a second light transmission layer is laminated inside the release layer, and a light reflection layer is formed inside the anchor layer. In the decorative resin molded product in which the metal thin film layer is laminated, and the light reflectance of the laminated structure composed of the release layer, the anchor layer and the metal thin film layer is 5% to 50%,
A reflection / transmission interface which is an interface between the metal thin film layer and the anchor layer;
By including an interference fringe inhibitor made of fine particles in the anchor layer,
It is characterized by a boundary surface that causes light scattering.
　本発明の他の好ましい実施態様にかかる加飾樹脂成形品は、
　樹脂成形品の最表面側に、光透過層である剥離層が形成され、前記剥離層の内側に艶層が積層されていて、前記剥離層と前記艶層からなる積層構造体の光反射率が３％～１０％である加飾樹脂成形品において、
　前記光反射層と前記光透過層の境界面である反射・透過境界面を、
　前記艶層に微細粒子よりなる干渉縞防止剤を含ませることにより、
　光散乱を生じる境界面としたことを特徴とする。 The decorative resin molded product according to another preferred embodiment of the present invention is
A release layer, which is a light transmission layer, is formed on the outermost surface side of the resin molded product, and a gloss layer is laminated inside the release layer, and the light reflectance of the laminated structure including the release layer and the gloss layer In decorative resin molded products with a 3% to 10%
A reflection / transmission interface that is an interface between the light reflection layer and the light transmission layer,
By including an interference fringe inhibitor made of fine particles in the gloss layer,
It is characterized by a boundary surface that causes light scattering.
　以上説明した本発明、本発明の好ましい実施態様、これらに含まれる構成要素は可能な限り組み合わせて実施することができる。 The present invention described above, preferred embodiments of the present invention, and components included in these can be implemented in combination as much as possible.
　本発明の転写シートは、その他の構成とともに、光透過層から反射・透過境界面の間に光散乱を生じる境界面を形成した転写シートであり、当該転写シートを使用して得られる加飾成形品は、干渉縞の発生を抑制でき、装飾性の高いものとなる利点がある。本発明の加飾樹脂成形品は、その他の構成とともに、光透過層から反射・透過境界面の間に光散乱を生じる境界面を形成したので、干渉縞の発生を抑制でき、装飾性の高いものとなる利点がある。 The transfer sheet of the present invention is a transfer sheet in which a boundary surface that causes light scattering is formed between the light transmission layer and the reflection / transmission boundary surface, along with other configurations, and a decorative molding obtained using the transfer sheet The product has the advantage that it can suppress the generation of interference fringes and has a high decorative property. The decorative resin molded product of the present invention, together with other configurations, formed a boundary surface that causes light scattering between the light transmission layer and the reflection / transmission boundary surface. There are benefits to be gained.
図１は第一転写シートの断面説明図である。FIG. 1 is an explanatory cross-sectional view of the first transfer sheet. 図２は第二転写シートの断面説明図である。FIG. 2 is a cross-sectional explanatory view of the second transfer sheet. 図３は第一加飾樹脂成形品の断面説明図である。FIG. 3 is a cross-sectional explanatory view of the first decorative resin molded product. 図４は第二加飾樹脂成形品の断面説明図である。FIG. 4 is a cross-sectional explanatory view of a second decorative resin molded product. 図５は第一転写シートを使用して成形同時転写法により加飾樹脂成形品を製造する方法の工程説明図である。FIG. 5 is a process explanatory view of a method for producing a decorated resin molded product by a simultaneous molding transfer method using the first transfer sheet. 図６は第一加飾樹脂成形品における入射光、反射光を説明する断面説明図である。FIG. 6 is a cross-sectional explanatory view illustrating incident light and reflected light in the first decorative resin molded product. 図７は艶層の表面状態を説明する説明図であり、（ａ）は干渉縞防止剤を含有する艶層表面の説明図であり（ｂ）は干渉縞防止剤を含まない艶層表面の説明図である。FIG. 7 is an explanatory diagram for explaining the surface state of the gloss layer, (a) is an explanatory diagram of the surface of the gloss layer containing the interference fringe preventing agent, and (b) is a diagram of the gloss layer surface not containing the interference fringe preventing agent. It is explanatory drawing. 図８は干渉縞防止剤を含む層の厚さ表現を説明する説明図である。FIG. 8 is an explanatory diagram for explaining the expression of the thickness of the layer containing the interference fringe preventing agent. 図９は金属薄膜層を含む従来の加飾樹脂成形品における入射光、反射光を説明する断面説明図である。FIG. 9 is an explanatory cross-sectional view illustrating incident light and reflected light in a conventional decorative resin molded product including a metal thin film layer. 図１０は艶層を含む従来の加飾樹脂成形品における入射光、反射光を説明する断面説明図である。FIG. 10 is an explanatory cross-sectional view illustrating incident light and reflected light in a conventional decorative resin molded product including a gloss layer. 図１１は艶層を含む従来の加飾樹脂成形品からの分光反射率の説明グラフであり、（ａ）は黒色艶層を含む従来の加飾樹脂成形品からの分光反射率グラフであり、（ｂ）は他の色の艶層を含む従来の加飾樹脂成形品からの分光反射率グラフである。FIG. 11 is an explanatory graph of spectral reflectance from a conventional decorative resin molded product including a glossy layer, (a) is a spectral reflectance graph from a conventional decorative resin molded product including a black glossy layer, (B) is the spectral reflectance graph from the conventional decorative resin molded product containing the gloss layer of another color.
　以下、図面を参照して本発明の実施例にかかる転写シートと加飾樹脂成形品をさらに説明する。本発明の実施例に記載した部材や部分の寸法、材質、形状、その相対位置などは、とくに特定的な記載のない限りは、この発明の範囲をそれらのみに限定する趣旨のものではなく、単なる説明例にすぎない。 Hereinafter, the transfer sheet and the decorative resin molded product according to the embodiment of the present invention will be further described with reference to the drawings. The dimensions, materials, shapes, relative positions, etc. of the members and parts described in the embodiments of the present invention are not intended to limit the scope of the present invention only to those unless otherwise specified. It is just an illustrative example.
　図１は本発明にかかる第一転写シート１の断面説明図である。第一転写シート１は基体シート２１の一方の表面上に、剥離層２２、アンカー層２３、金属薄膜層２６と接着層２４が順次積層形成されている。剥離層２２とアンカー層２３はいずれも光を透過する層である。剥離層２２とアンカー層２３は光透過層を形成する。 FIG. 1 is an explanatory sectional view of a first transfer sheet 1 according to the present invention. In the first transfer sheet 1, a release layer 22, an anchor layer 23, a metal thin film layer 26 and an adhesive layer 24 are sequentially laminated on one surface of a base sheet 21. The release layer 22 and the anchor layer 23 are layers that transmit light. The release layer 22 and the anchor layer 23 form a light transmission layer.
　金属薄膜層２６は光反射層である。金属薄膜層２６は光半透過性である。 The metal thin film layer 26 is a light reflecting layer. The metal thin film layer 26 is light semi-transmissive.
　アンカー層２３と金属薄膜層２６の境界面は反射・透過境界面１３である。反射・透過境界面１３を形成する２つの層は、アンカー層２３と金属薄膜層２６である。このうちの一の層であるアンカー層２３に微細粒子よりなる干渉縞防止剤６が含まれている。 The boundary surface between the anchor layer 23 and the metal thin film layer 26 is a reflection / transmission boundary surface 13. The two layers forming the reflection / transmission interface 13 are an anchor layer 23 and a metal thin film layer 26. The anchor layer 23 which is one of these layers contains the interference fringe preventing agent 6 made of fine particles.
　基体シート２１は、ポリプロピレン系樹脂、ポリエチレン系樹脂、ポリアミド系樹脂、ポリエステル系樹脂、アクリル系樹脂、ポリ塩化ビニル系樹脂などの樹脂シート、アルミニウム箔、銅箔などの金属箔、グラシン紙、コート紙、セロハンなどのセルロース系シート、あるいは以上の各シートの複合体などを使用することができる。 The base sheet 21 is a resin sheet such as polypropylene resin, polyethylene resin, polyamide resin, polyester resin, acrylic resin or polyvinyl chloride resin, metal foil such as aluminum foil or copper foil, glassine paper, coated paper. Cellulose-based sheets such as cellophane, or composites of the above respective sheets can be used.
　剥離層２２は転写後、被転写物の最表面となる層である。剥離層２の材質は、アクリル系樹脂、ポリエステル系樹脂、ポリ塩化ビニル系樹脂、セルロース系樹脂、ゴム系樹脂、ポリウレタン系樹脂、ポリ酢酸ビニル系樹脂などのほか、塩化ビニル－酢酸ビニル共重合体系樹脂、エチレン－酢酸ビニル共重合体系樹脂などの共重合体を例示することができる。剥離層２２の形成方法は、グラビアコート法、ロールコート法、コンマコート法、リップコート法などのコート法、グラビア印刷法、スクリーン印刷法などの印刷法がある。 The release layer 22 is a layer that becomes the outermost surface of the transfer object after transfer. The release layer 2 can be made of acrylic resin, polyester resin, polyvinyl chloride resin, cellulose resin, rubber resin, polyurethane resin, polyvinyl acetate resin, or vinyl chloride-vinyl acetate copolymer system. Examples thereof include a resin and a copolymer such as an ethylene-vinyl acetate copolymer resin. Examples of the method for forming the release layer 22 include a coating method such as a gravure coating method, a roll coating method, a comma coating method, and a lip coating method, and a printing method such as a gravure printing method and a screen printing method.
　アンカー層２３は、剥離層２２と金属薄膜層２６との密着性を向上させる層である。アンカー層２３は干渉縞防止剤６を含有する。アンカー層２３の材質は、二液性硬化ウレタン樹脂、熱硬化ウレタン樹脂、メラミン系樹脂、セルロースエステル系樹脂、塩素含有ゴム系樹脂、塩素含有ビニル系樹脂、アクリル系樹脂、エポキシ系樹脂、ビニル系共重合体樹脂などを使用できる。アンカー層３の形成方法は、下記記載の干渉縞防止剤６をアンカー層材料中に混入した後、グラビアコート法、ロールコート法、コンマコート法、リップコート法などのコート法、グラビア印刷法、スクリーン印刷法などの印刷法などがある。 The anchor layer 23 is a layer that improves the adhesion between the release layer 22 and the metal thin film layer 26. The anchor layer 23 contains the interference fringe preventing agent 6. The material of the anchor layer 23 is a two-component cured urethane resin, a thermosetting urethane resin, a melamine resin, a cellulose ester resin, a chlorine-containing rubber resin, a chlorine-containing vinyl resin, an acrylic resin, an epoxy resin, or a vinyl resin. A copolymer resin or the like can be used. As for the formation method of the anchor layer 3, after mixing the interference fringe preventing agent 6 described below into the anchor layer material, a gravure coating method, a roll coating method, a comma coating method, a coating method such as a lip coating method, a gravure printing method, There are printing methods such as screen printing.
　金属薄膜層２６の形成方法は、真空蒸着法、スパッターリング法、イオンプレーティング法、鍍金法などである。金属薄膜の材料は、アルミニウム、ニッケル、金、白金、クロム、鉄、銅、スズ、インジウム、銀、チタニウム、鉛、亜鉛などの金属、これらの合金または化合物である。 The formation method of the metal thin film layer 26 is a vacuum deposition method, a sputtering method, an ion plating method, a plating method, or the like. The material of the metal thin film is a metal such as aluminum, nickel, gold, platinum, chromium, iron, copper, tin, indium, silver, titanium, lead, or zinc, or an alloy or compound thereof.
　接着層２４は、被加飾樹脂成形品の表層と金属薄膜層２６を接着するものである。接着層２４の材質は、従来から転写シートに使用されている公知の樹脂を使用する。接着層２４の形成方法は、従来から転写シートに採用されている公知の形成方法を選択すればよい。 The adhesive layer 24 adheres the surface layer of the decorated resin molded product and the metal thin film layer 26. As the material of the adhesive layer 24, a known resin conventionally used for transfer sheets is used. As a method for forming the adhesive layer 24, a known forming method conventionally used for transfer sheets may be selected.
　剥離層２２、アンカー層２３と金属薄膜層２６からなる積層構造体の光反射率は５％～５０％である。実際の測定は、基体シートの上に剥離層２２、アンカー層２３と金属薄膜層２６からなる積層構造体を形成し、さらに接着層を形成した転写シートを作成し、当該転写シートを使用して加飾樹脂成形品を作成する。そして当該加飾樹脂成形品の光反射率を測定し、この測定値を積層構造体の光反射率とする。その他、光の入射方向などは、課題を解決する手段中で説明したと同一である。光反射率が上記範囲内にある積層構造体を含む従来の加飾樹脂成形品が干渉縞を生じるからである。 The light reflectance of the laminated structure composed of the release layer 22, the anchor layer 23, and the metal thin film layer 26 is 5% to 50%. In actual measurement, a laminate structure composed of a release layer 22, an anchor layer 23 and a metal thin film layer 26 is formed on a base sheet, and a transfer sheet is further formed with an adhesive layer. Create a decorative resin molded product. And the light reflectivity of the said decorative resin molded product is measured, and let this measured value be the light reflectivity of a laminated structure. In addition, the incident direction of light is the same as described in the means for solving the problem. This is because a conventional decorative resin molded product including a laminated structure having a light reflectance in the above range produces interference fringes.
　図３は第一加飾樹脂成形品の断面説明図である。第一加飾樹脂成形品３は、成形樹脂３１の一方表面に、接着層２４、金属薄膜層２６、アンカー層２３と剥離層２２が順次積層形成されている。金属薄膜層２６は光反射層である。金属薄膜層２６は光半透過性である。剥離層２２とアンカー層２３はいずれも光を透過する層である。剥離層２２とアンカー層２３は光透過層を形成する。 FIG. 3 is a cross-sectional explanatory view of the first decorative resin molded product. In the first decorative resin molded product 3, an adhesive layer 24, a metal thin film layer 26, an anchor layer 23, and a release layer 22 are sequentially laminated on one surface of a molded resin 31. The metal thin film layer 26 is a light reflecting layer. The metal thin film layer 26 is light semi-transmissive. The release layer 22 and the anchor layer 23 are layers that transmit light. The release layer 22 and the anchor layer 23 form a light transmission layer.
　第一加飾樹脂成形品３は、成形樹脂に第一転写シート１を転写して製造したものであり、積層された各層は第一転写シート１と同一である。 The first decorative resin molded product 3 is manufactured by transferring the first transfer sheet 1 to a molding resin, and each layer laminated is the same as the first transfer sheet 1.
　第一転写シート１と同様に第一加飾樹脂成形品３においても、アンカー層２３と金属薄膜層２６の境界面は反射・透過境界面１３である。反射・透過境界面１３を形成する２つの層は、アンカー層２３と金属薄膜層２６である。このうちの一の層であるアンカー層２３に微細粒子よりなる干渉縞防止剤６が含まれている。 In the first decorative resin molded product 3 as in the first transfer sheet 1, the boundary surface between the anchor layer 23 and the metal thin film layer 26 is the reflection / transmission boundary surface 13. The two layers forming the reflection / transmission interface 13 are an anchor layer 23 and a metal thin film layer 26. The anchor layer 23 which is one of these layers contains the interference fringe preventing agent 6 made of fine particles.
　図６は第一加飾樹脂成形品における入射光、反射光を説明する断面説明図である。第一加飾樹脂成形品３に入射光６１が照射されると、入射光の一部は表面１５で反射される。当該反射光を表面反射光６２とする。入射光６１の一部分は光透過層である剥離層２２とアンカー層２３を透過し、反射・透過境界面１３に至る。反射・透過境界面１３で入射光６１は散乱し、例えば、界面反射光６３ａ、界面反射光６３ｂと界面反射光６３ｃのように互いに異なる方向に進む。このため、表面反射光６２と干渉す界面反射光が減少し、干渉縞が観察されなくなる。。 FIG. 6 is an explanatory sectional view for explaining incident light and reflected light in the first decorative resin molded product. When incident light 61 is irradiated on the first decorative resin molded product 3, a part of the incident light is reflected by the surface 15. The reflected light is referred to as surface reflected light 62. A part of the incident light 61 is transmitted through the peeling layer 22 and the anchor layer 23 which are light transmission layers, and reaches the reflection / transmission interface 13. The incident light 61 is scattered at the reflection / transmission boundary surface 13 and travels in different directions, for example, interface reflection light 63a, interface reflection light 63b, and interface reflection light 63c. For this reason, the interface reflected light that interferes with the surface reflected light 62 is reduced, and interference fringes are not observed. .
　可視光領域に連続的にスペクトルを有する太陽光に代表される光を第一加飾樹脂成形品３に照射したときに加え、可視光領域に極大のピークを有する蛍光灯の光を照射したときであっても、干渉縞が生じないという利点を得ることができる。 When the first decorative resin molded product 3 is irradiated with light typified by sunlight having a spectrum continuously in the visible light region, and when light from a fluorescent lamp having a maximum peak in the visible light region is irradiated Even so, the advantage that interference fringes do not occur can be obtained.
　アンカー層材料中での干渉縞防止剤６の含有量は、通常２重量％～１０重量％で、好ましくは２重量％～５重量％である。この範囲にあると、入射光が充分に散乱し、また、アンカー層３の透明性が損なわれないからである。 The content of the interference fringe preventing agent 6 in the anchor layer material is usually 2 to 10% by weight, preferably 2 to 5% by weight. If it is within this range, the incident light is sufficiently scattered and the transparency of the anchor layer 3 is not impaired.
　干渉縞防止剤６の材質に特に制限はないが、例えば、シリカ、アルミナ、炭酸カルシウム、硫酸バリウム等の無機物、アクリル樹脂、ポリエチレン、ウレタン樹脂、ポリカーボネート、ポリアミド等の有機高分子からなる干渉縞防止剤が挙げられる。干渉縞防止剤６の平均粒子径は、通常０．５μｍ～２０μｍであり、好ましくは０．５μｍ～１０μｍである。 There are no particular restrictions on the material of the interference fringe prevention agent 6, but for example, interference fringe prevention comprising inorganic substances such as silica, alumina, calcium carbonate, and barium sulfate, and organic polymers such as acrylic resin, polyethylene, urethane resin, polycarbonate, and polyamide. Agents. The average particle diameter of the interference fringe preventing agent 6 is usually 0.5 μm to 20 μm, preferably 0.5 μm to 10 μm.
　光散乱を生じる界面は、二乗平均平方根粗さで０．１μｍ以上５μｍ以下であることが好ましい。上記界面の粗さが二乗平均平方根粗さで０．１μｍ未満であると入射光は十分に散乱しない。上記界面の粗さが二乗平均平方根粗さで５μｍを超えると金属薄膜層２６の凹凸形状が際立って見えるようになり、加飾樹脂成形品の装飾性が失われる。 The interface that causes light scattering is preferably from 0.1 μm to 5 μm in terms of root mean square roughness. When the roughness of the interface is less than 0.1 μm in terms of root mean square roughness, incident light is not sufficiently scattered. When the roughness of the interface exceeds 5 μm in terms of root mean square roughness, the uneven shape of the metal thin film layer 26 becomes conspicuous, and the decorativeness of the decorative resin molded product is lost.
　図８は干渉縞防止剤を含む層の模式推定断面図である。アンカー層２３は干渉縞防止剤６粒子の表面を取り囲む薄層の層材料２３１によって、直下の層２８に固定されるものと考えられる。アンカー層の厚さｄは層材料の厚さで表す。 FIG. 8 is a schematic cross-sectional view of a layer containing an interference fringe inhibitor. The anchor layer 23 is considered to be fixed to the layer 28 immediately below by a thin layer material 231 surrounding the surface of the interference fringe preventing agent 6 particles. The thickness d of the anchor layer is expressed by the thickness of the layer material.
　光透過層が２層以上の層から成る場合には、光散乱を生じさせる境界面は、透過・透過境界面であってもよい。透過・透過境界面の一例は、剥離層２２とアンカー層２３の境界面である。この場合には、剥離層２２を作成する材料に干渉縞防止剤を含有させ、塗布や印刷により剥離層を形成すればよい。もっとも、金属薄膜層と直接接する反射・透過境界面を、光散乱を起こさせる面とすることが好ましい。金属薄膜層が形成する境界面で反射する光を直接的に散乱させることができるので、その結果、最も効果的に干渉縞の発生を抑えることができるからである。 When the light transmission layer is composed of two or more layers, the boundary surface that causes light scattering may be a transmission / transmission boundary surface. An example of the transmission / transmission interface is the interface between the peeling layer 22 and the anchor layer 23. In this case, an interference fringe preventing agent may be contained in the material for forming the release layer 22 and the release layer may be formed by coating or printing. However, it is preferable that the reflection / transmission boundary surface that is in direct contact with the metal thin film layer is a surface that causes light scattering. This is because the light reflected at the boundary surface formed by the metal thin film layer can be directly scattered, and as a result, the generation of interference fringes can be suppressed most effectively.
　続いて、艶層を含む第二転写シートと第二加飾樹脂成形品を説明する。図２は本発明にかかる第二転写シート２の断面説明図である。 Subsequently, the second transfer sheet including the gloss layer and the second decorative resin molded product will be described. FIG. 2 is a cross-sectional explanatory view of the second transfer sheet 2 according to the present invention.
　第二転写シート２は基体シート２１の一方表面に、剥離層２２、艶層２７と接着層２４が順次積層形成されている。剥離層２２は光を透過する層である。剥離層２２は光透過層を形成する。艶層２７は光反射層である。 The second transfer sheet 2 has a release layer 22, a gloss layer 27 and an adhesive layer 24 sequentially laminated on one surface of a base sheet 21. The release layer 22 is a layer that transmits light. The release layer 22 forms a light transmission layer. The gloss layer 27 is a light reflecting layer.
　剥離層２２と艶層２７の境界面は反射・透過境界面１３である。反射・透過境界面１３を形成する２つの層は、剥離層２２と艶層２７である。このうちの一の層である艶層２７に微細粒子よりなる干渉縞防止剤６が含まれている。反射・透過境界面１３は光散乱を起こす境界面となる。 The boundary surface between the peeling layer 22 and the gloss layer 27 is a reflection / transmission boundary surface 13. The two layers forming the reflection / transmission interface 13 are a peeling layer 22 and a gloss layer 27. Interference fringe preventing agent 6 made of fine particles is contained in gloss layer 27, which is one of these layers. The reflection / transmission interface 13 is a boundary that causes light scattering.
　図４は第二加飾樹脂成形品４の断面説明図である。第二加飾樹脂成形品４は、成形樹脂３１の一方表面に、接着層２４、艶層２７と剥離層２２が順次積層形成されている。艶層２７は光反射層である。剥離層２２は光を透過する層である。剥離層２２は光透過層を形成する。 FIG. 4 is a cross-sectional explanatory view of the second decorative resin molded product 4. In the second decorative resin molded product 4, the adhesive layer 24, the gloss layer 27, and the release layer 22 are sequentially laminated on one surface of the molded resin 31. The gloss layer 27 is a light reflecting layer. The release layer 22 is a layer that transmits light. The release layer 22 forms a light transmission layer.
　第二加飾樹脂成形品４は、成形樹脂に第二転写シート２を転写して製造したものであり、積層された各層は第二転写シート２と同一である。 The second decorative resin molded product 4 is manufactured by transferring the second transfer sheet 2 to a molding resin, and each layer laminated is the same as the second transfer sheet 2.
　第二転写シート２と同様に第二加飾樹脂成形品４においても、剥離層２２と艶層２７の境界面は反射・透過境界面１３である。反射・透過境界面１３を形成する２つの層は、剥離層２２と艶層２７である。このうちの一の層である艶層２７に微細粒子よりなる干渉縞防止剤６が含まれている。反射・透過境界面１３は光散乱を起こす境界面である。 In the second decorative resin molded product 4 as in the second transfer sheet 2, the boundary surface between the release layer 22 and the gloss layer 27 is a reflection / transmission boundary surface 13. The two layers forming the reflection / transmission interface 13 are a peeling layer 22 and a gloss layer 27. Interference fringe preventing agent 6 made of fine particles is contained in gloss layer 27, which is one of these layers. The reflection / transmission interface 13 is an interface that causes light scattering.
　第二転写シート２と第二加飾樹脂成形品４にあって、艶層２７の材質は、ポリビニル系樹脂、ポリアミド系樹脂、ポリアクリル系樹脂、ポリウレタン系樹脂、ポリビニルアセタール系樹脂、ポリエステルウレタン系樹脂、セルロースエステル系樹脂、アルキッド樹脂などの樹脂をバインダーとし、任意色の顔料または染料を着色剤として含有する着色インキである。艶層を金属色にしたい場合は、アルミニウム、チタン、ブロンズ等の金属粒子やマイカに酸化チタンをコーティングしたパール顔料を用いることもできる。 In the second transfer sheet 2 and the second decorative resin molded product 4, the material of the gloss layer 27 is polyvinyl resin, polyamide resin, polyacrylic resin, polyurethane resin, polyvinyl acetal resin, polyester urethane type. A colored ink containing a resin, a cellulose ester-based resin, an alkyd resin, or the like as a binder and an optional color pigment or dye as a colorant. When the gloss layer is desired to have a metallic color, pearl pigments in which titanium oxide is coated on metal particles such as aluminum, titanium, bronze, or mica can be used.
　剥離層２２と艶２７からなる積層構造体の光反射率は３％～１０％である。実際の測定は、基体シートの上に剥離層２２艶層２７からなる積層構造体を形成し、さらに接着層を形成した転写シートを作成し、当該転写シートを使用して加飾樹脂成形品を作成する。そして当該加飾樹脂成形品の光反射率を測定し、この測定値を積層構造体の光反射率とする。その他、光の入射方向などは、課題を解決する手段中で説明したと同一である。光反射率が上記範囲内にある積層構造体を含む従来の加飾樹脂成形品が干渉縞を生じるからである。 The light reflectance of the laminated structure composed of the release layer 22 and the gloss 27 is 3% to 10%. In actual measurement, a laminated structure composed of a release layer 22 and a glossy layer 27 is formed on a base sheet, a transfer sheet is further formed with an adhesive layer, and a decorative resin molded product is produced using the transfer sheet. create. And the light reflectivity of the said decorative resin molded product is measured, and let this measured value be the light reflectivity of a laminated structure. In addition, the incident direction of light is the same as described in the means for solving the problem. This is because a conventional decorative resin molded product including a laminated structure having a light reflectance in the above range produces interference fringes.
　上述の着色インキに、干渉縞防止剤を混合する。干渉縞防止剤の材質、平均粒子径、含有量などは、第一転写シートと第一加飾樹脂成形品のアンカー層に関して説明した事柄と同一である。干渉縞防止剤を混合した着色インキを使用して艶層を形成する方法は、オフセット印刷法、グラビア印刷法、スクリーン印刷法などの通常の印刷法などを用いるとよい。 ● Mixing interference fringes with the above-mentioned colored ink. The material, average particle diameter, content and the like of the interference fringe preventing agent are the same as those described for the anchor layer of the first transfer sheet and the first decorative resin molded product. As a method for forming a gloss layer using a colored ink mixed with an interference fringe preventing agent, a normal printing method such as an offset printing method, a gravure printing method, or a screen printing method may be used.
　図７は艶層の表面状態を説明する説明図である。図７（ａ）は干渉縞防止剤を含有する艶層表面の説明図であり、図７（ｂ）は干渉縞防止剤を含まない艶層表面の説明図である。干渉防止剤を含まない場合、従来の艶層１２７の表面に顔料粒子２７１が密に整列していると考えられる。顔料粒子の一例は、一次粒子径が数十ｎｍのカーボンブラック粒子である。密に整列した顔料粒子が光を反射して界面反射光が生じ、このため干渉縞が引き起こされると考えられる。 FIG. 7 is an explanatory diagram for explaining the surface state of the gloss layer. FIG. 7A is an explanatory diagram of the gloss layer surface containing the interference fringe preventing agent, and FIG. 7B is an explanatory diagram of the gloss layer surface not including the interference fringe preventing agent. When no interference preventing agent is contained, it is considered that the pigment particles 271 are closely arranged on the surface of the conventional gloss layer 127. An example of pigment particles is carbon black particles having a primary particle size of several tens of nanometers. It is considered that the closely aligned pigment particles reflect light to generate interface reflected light, which causes interference fringes.
　第二転写シートと第二加飾樹脂成形品における本発明にかかる艶層２７は、干渉縞防止剤６を含有している。艶層２７では、干渉縞防止剤６があるために顔料粒子２７１が密に整列できない。このため、艶層２７の表面で光の散乱が生じると考えられる。 The gloss layer 27 according to the present invention in the second transfer sheet and the second decorative resin molded product contains the interference fringe preventing agent 6. In the glossy layer 27, the pigment particles 271 cannot be closely arranged because of the interference fringe preventing agent 6. For this reason, it is considered that light scattering occurs on the surface of the gloss layer 27.
　本願発明にかかる加飾樹脂成形品は、転写シートを使用する転写法により製造することができる。また、本願発明にかかる加飾樹脂成形品は、成形樹脂の表面に順次層を形成して製造してもよい。当該転写法の中で、最も汎用される２つの形態を述べる。 The decorative resin molded product according to the present invention can be manufactured by a transfer method using a transfer sheet. In addition, the decorative resin molded product according to the present invention may be manufactured by sequentially forming layers on the surface of the molded resin. Among the transfer methods, two most commonly used forms will be described.
　第一の形態は、前述の転写シートを用い射出成形による成形同時転写法により加飾樹脂形成品を製造する方法である。図５は第一転写シートを使用して成形同時転写法により加飾樹脂成形品を製造する方法の工程説明図である。製造工程は図５（ａ）、（ｂ）、（ｃ）、（ｄ）、（ｅ）の順序で進行する。なお、（ｃ）と（ｄ）では金型の図示を省略している。 The first form is a method for producing a decorative resin-formed product by the simultaneous transfer molding method by injection molding using the aforementioned transfer sheet. FIG. 5 is a process explanatory view of a method for producing a decorated resin molded product by a simultaneous molding transfer method using the first transfer sheet. The manufacturing process proceeds in the order of FIGS. 5 (a), (b), (c), (d), and (e). In addition, illustration of a metal mold | die is abbreviate | omitted in (c) and (d).
　まず、（ａ）を参照して、Ａ金型４１とＢ金型４２からなる成形用金型内に転写シート１を送り込む。次に、（ｂ）に示すように、Ａ金型４１とＢ金型４２を型締めし、溶融状態の樹脂をキャビティ４３内に射出充満させ、樹脂を成形すると同時に成形樹脂の表面に転写シート１を接着させる。金型を冷却又は自然放冷し、溶融状態の樹脂を固化する。当該状態を（ｃ）に示している。 First, referring to (a), the transfer sheet 1 is fed into a molding die composed of an A die 41 and a B die 42. Next, as shown in (b), the A mold 41 and the B mold 42 are clamped, the molten resin is injected and filled into the cavity 43, and the transfer sheet is formed on the surface of the molded resin at the same time as the resin is molded. 1 is adhered. The mold is cooled or allowed to cool naturally to solidify the molten resin. This state is shown in (c).
　Ａ金型４１とＢ金型４２を型開きする。型開きと同時又は型開き後に、（ｄ）に図示したように、剥離層２２との境界面から基体シート２１を剥がす。そして、金型から加飾樹脂成形品３を取り出す。加飾樹脂成形品を（ｅ）に図示した。 型 Open the A mold 41 and the B mold 42. Simultaneously with the mold opening or after the mold opening, the base sheet 21 is peeled off from the boundary surface with the release layer 22 as shown in FIG. Then, the decorative resin molded product 3 is taken out from the mold. The decorative resin molded product is illustrated in (e).
　第二の形態は、前述の転写シートを用い、転写法により加飾樹脂成形品を製造する方法である。まず、樹脂成形品の表面に、転写シートの接着層側を当接させる。次に、シリコンラバーなどの耐熱ゴム状弾性体を備えたロール転写機、アップダウン転写機などの転写機を用い、耐熱ゴム状弾性体を介して転写シートの基体シート側から熱と圧力とを加える。当該操作により、接着層が被転写物表面に接着し、他の層も被転写物表面に転移する。冷却後に、基体シート１と剥離層２との境界面で剥離させつつ基体シートを剥がすと、転写が完了し、加飾樹脂成形品を得る。 The second form is a method for producing a decorated resin molded product by the transfer method using the transfer sheet described above. First, the adhesive layer side of the transfer sheet is brought into contact with the surface of the resin molded product. Next, using a transfer machine such as a roll transfer machine equipped with a heat-resistant rubber-like elastic body such as silicon rubber or an up-down transfer machine, heat and pressure are transferred from the base sheet side of the transfer sheet via the heat-resistant rubber-like elastic body. Add. By this operation, the adhesive layer adheres to the surface of the transfer object, and other layers also transfer to the surface of the transfer object. When the substrate sheet is peeled off while being peeled at the boundary surface between the substrate sheet 1 and the release layer 2 after cooling, the transfer is completed and a decorative resin molded product is obtained.
　被転写物としては、樹脂成形品など各種材質からなるものを用いることができる。被転写物は、透明、半透明、不透明のいずれでもよい。また、被転写物は、着色されていても、着色されていなくてもよい。 As the material to be transferred, materials made of various materials such as resin molded products can be used. The transfer object may be transparent, translucent, or opaque. Further, the transfer object may be colored or not colored.
＜実施例１＞
　基体シートであるＰＥＴフィルムの一方表面上に、メラミン樹脂を厚さ１μｍ全面に塗布し、その上に厚さ１μｍの剥離層を形成し、その上に平均粒子径２μｍのシリカ粒子を１０重量％含有するアンカー層を厚さ１μｍ、アルミニウム薄膜層、アクリル樹脂からなる接着層を厚さ３μｍ、グラビア印刷法により順次形成し転写シートを得た。アルミニウム薄膜層の厚さは１０ｎｍであった。 <Example 1>
A melamine resin is applied to the entire surface of 1 μm thickness on one surface of a PET film as a base sheet, a 1 μm-thick release layer is formed thereon, and silica particles having an average particle diameter of 2 μm are formed thereon by 10% by weight. The contained anchor layer was 1 μm thick, an aluminum thin film layer, and an adhesive layer made of acrylic resin was formed in order by a gravure printing method to obtain a transfer sheet. The thickness of the aluminum thin film layer was 10 nm.
　次に、得られた転写シート使用して、成形同時転写法により加飾樹脂成形品を製造した。得られた加飾樹脂成形品に三波長蛍光灯から可視光を照射したところ、干渉縞は観察されなかった。 Next, using the obtained transfer sheet, a decorative resin molded product was manufactured by a simultaneous molding transfer method. When the obtained decorative resin molded product was irradiated with visible light from a three-wavelength fluorescent lamp, no interference fringes were observed.
＜比較例１＞
　基体シートであるＰＥＴフィルムの一方表面上に、メラミン樹脂を厚さ１μｍ全面に塗布し、その上に厚さ１μｍの剥離層を形成し、その上にアンカー層を１μｍ、アルミニウム薄膜層、アクリル樹脂からなる接着層を厚さ３μｍ、グラビア印刷法により順次形成し転写シートを得た。アルミニウム薄膜層の厚さは１０ｎｍであった。 <Comparative Example 1>
A melamine resin is applied on the entire surface of a PET film, which is a base sheet, to a thickness of 1 μm, a 1 μm-thick release layer is formed thereon, an anchor layer is 1 μm, an aluminum thin film layer, an acrylic resin A transfer sheet was obtained by sequentially forming an adhesive layer of 3 μm in thickness by a gravure printing method. The thickness of the aluminum thin film layer was 10 nm.
　次に、得られた転写シート使用して、成形同時転写法により加飾樹脂成形品を製造した。当該加飾樹脂成形品の光反射率、すなわち、剥離層、アンカー層とアルミニウム薄膜層からなる積層構造体の光反射率は２０％であった。得られた加飾樹脂成形品に三波長蛍光灯から可視光を照射したところ、その表面に干渉縞が観察された。 Next, using the obtained transfer sheet, a decorative resin molded product was manufactured by a simultaneous molding transfer method. The light reflectance of the decorative resin molded product, that is, the light reflectance of the laminated structure including the release layer, the anchor layer, and the aluminum thin film layer was 20%. When the obtained decorative resin molding was irradiated with visible light from a three-wavelength fluorescent lamp, interference fringes were observed on the surface.
＜実施例２＞
　基体シートであるＰＥＴフィルムの一方表面上に、メラミン樹脂を１μｍ全面に塗布し、その上に厚さ１μｍの剥離層を形成し、その上に平均粒子径２μｍのシリカ粒子を１０重量％含有しアクリル樹脂からなる艶層を厚さ３μｍ、アクリル樹脂からなる接着層を厚さ３μｍグラビア印刷法により順次形成し転写シートを得た。 <Example 2>
A melamine resin is applied to the entire surface of 1 μm on one surface of a PET film as a base sheet, a 1 μm-thick release layer is formed thereon, and 10% by weight of silica particles having an average particle diameter of 2 μm are contained thereon. A transfer layer was obtained by sequentially forming a gloss layer made of acrylic resin with a thickness of 3 μm and an adhesive layer made of acrylic resin with a thickness of 3 μm by a gravure printing method.
　次に、得られた転写シートを成形同時転写法に用いて加飾樹脂成形品を得た。得られた加飾樹脂成形品は、その表面に三波長蛍光灯から可視光を照射したところ、その表面に干渉縞が観察されなかった。 Next, a decorative resin molded product was obtained by using the obtained transfer sheet in a simultaneous molding transfer method. When the obtained decorative resin molded product was irradiated with visible light from the three-wavelength fluorescent lamp on the surface, no interference fringes were observed on the surface.
＜比較例２＞
　基体シートであるＰＥＴフィルムの一方表面上に、メラミン樹脂を１μｍ全面に塗布し、その上に厚さ１μｍの剥離層を形成し、その上にアクリル樹脂からなる艶層を厚さ３μｍ、アクリル樹脂からなる接着層を厚さ３μｍ、グラビア印刷法により順次形成し転写シートを得た。 <Comparative example 2>
A melamine resin is applied to the entire surface of 1 μm on one surface of a PET film as a base sheet, a 1 μm-thick release layer is formed thereon, and a glossy layer made of an acrylic resin is formed thereon with a thickness of 3 μm. A transfer sheet was obtained by sequentially forming an adhesive layer of 3 μm in thickness by a gravure printing method.
　次に、得られた転写シート使用して、成形同時転写法により加飾樹脂成形品を製造した。当該加飾樹脂成形品の光反射率、すなわち、剥離層と艶層からなる積層構造体の光反射率は５％であった。得られた加飾樹脂成形品に三波長蛍光灯から可視光を照射したところ、その表面に干渉縞が観察された。 Next, using the obtained transfer sheet, a decorative resin molded product was manufactured by a simultaneous molding transfer method. The light reflectance of the decorative resin molded product, that is, the light reflectance of the laminated structure composed of the release layer and the gloss layer was 5%. When the obtained decorative resin molding was irradiated with visible light from a three-wavelength fluorescent lamp, interference fringes were observed on the surface.
　本発明は、携帯電話などの通信機器、自動車外装パーツ、自動車内部の情報機器、家電製品など、各種成形品において好適に用いることができる。 The present invention can be suitably used in various molded products such as communication devices such as mobile phones, automobile exterior parts, information equipment inside automobiles, and home appliances.
　１　　第一転写シート
　２　　第二転写シート
　３　　第一加飾樹脂成形品
　４　　第二加飾樹脂成形品
　６　　干渉縞防止剤
　１３　反射・透過境界面
　２１　基体シート
　２２　剥離層
　２３　アンカー層
　２４　接着層
　２６　金属薄膜層
　２７　艶層
　４１　Ａ金型
　４２　Ｂ金型
　６１　入射光
　６２　表面反射光
　６３ａ、６３ｂ、６３ｃ　界面反射光
　２７１　顔料粒子 DESCRIPTION OF SYMBOLS 1 1st transfer sheet 2 2nd transfer sheet 3 1st decorating resin molded product 4 2nd decorating resin molded product 6 Interference fringe prevention agent 13 Reflection / transmission interface 21 Base sheet 22 Peeling layer 23 Anchor layer 24 Adhesive layer 26 Metal thin film layer 27 Gloss layer 41 A mold 42 B mold 61 Incident light 62 Surface reflected light 63a, 63b, 63c Interface reflected light 271 Pigment particles

Claims (8)

  1. 基体シートの一方表面上に、単一層又は複数層の光透過層が形成され、前記光透過層の上に、金属薄膜層であって前記光透過層と前記金属薄膜層からなる積層構造体の光反射率が５％～５０％である前記金属薄膜層と、艶層であって前記光透過層と前記艶層からなる積層構造体の光反射率が３％～１０％である艶層からなる群より選択される一の層である光反射層が積層された転写シートにおいて、
    　前記光反射層と前記光透過層の境界面である反射・透過境界面又は光透過層間の境界面である透過・透過境界面を、
    　前記反射・透過境界面又は前記透過・透過境界面を形成する二の層のいずれかに微細粒子よりなる干渉縞防止剤を含ませることにより、
    　光散乱を生じる境界面としたことを特徴とする転写シート。     A single layer or a plurality of light transmission layers are formed on one surface of the base sheet, and a metal thin film layer is formed on the light transmission layer, the laminated structure including the light transmission layer and the metal thin film layer. From the metal thin film layer having a light reflectivity of 5% to 50%, and a gloss layer that is a gloss layer, and the laminated structure comprising the light transmission layer and the gloss layer has a light reflectivity of 3% to 10%. In the transfer sheet in which the light reflecting layer which is one layer selected from the group consisting of
    A reflection / transmission boundary surface that is a boundary surface between the light reflection layer and the light transmission layer or a transmission / transmission interface surface that is a boundary surface between the light transmission layers;
    By including an interference fringe preventing agent composed of fine particles in either the reflection / transmission interface or the two layers forming the transmission / transmission interface,
    A transfer sheet characterized by having a boundary surface that generates light scattering.
  2. 　前記干渉縞防止剤の平均粒子径が０．５μｍ～２０μｍである請求項１に記載した転写シート。 2. The transfer sheet according to claim 1, wherein the interference fringe inhibitor has an average particle diameter of 0.5 μm to 20 μm.
  3. 　前記光散乱を生じる境界面は、その二乗平均平方根粗さが０．１μｍ～５μｍである請求項１に記載した転写シート。 2. The transfer sheet according to claim 1, wherein the light scattering surface has a root mean square roughness of 0.1 μm to 5 μm.
  4. 　基体シートの一方表面上に、第一光透過層である剥離層が形成され、前記剥離層の上に第二光透過層であるアンカー層が積層され、前記アンカー層の上に光反射層である金属薄膜層が積層されていて、前記剥離層、前記アンカー層と前記金属薄膜層からなる積層構造体の光反射率が５％～５０％である転写シートにおいて、
    　前記金属薄膜層と前記アンカー層の境界面である反射・透過境界面を、
    　前記アンカー層に微細粒子よりなる干渉縞防止剤を含ませることにより、
    　光散乱を生じる境界面としたことを特徴とする転写シート。     A release layer that is a first light transmission layer is formed on one surface of the base sheet, an anchor layer that is a second light transmission layer is laminated on the release layer, and a light reflection layer is formed on the anchor layer. In a transfer sheet in which a certain metal thin film layer is laminated, and the light reflectance of the laminated structure composed of the release layer, the anchor layer and the metal thin film layer is 5% to 50%,
    A reflection / transmission interface which is an interface between the metal thin film layer and the anchor layer;
    By including an interference fringe inhibitor made of fine particles in the anchor layer,
    A transfer sheet characterized by having a boundary surface that generates light scattering.
  5. 　基体シートの一方表面上に、光透過層である剥離層が形成され、前記剥離層の上に艶層が積層されていて、前記剥離層と前記艶層からなる積層構造体の光反射率が３％～１０％である転写シートにおいて、
    　前記光反射層と前記光透過層の境界面である反射・透過境界面を、
    　前記艶層に微細粒子よりなる干渉縞防止剤を含ませることにより、
    　光散乱を生じる境界面としたことを特徴とする転写シート。     A release layer, which is a light transmission layer, is formed on one surface of the base sheet, and a gloss layer is laminated on the release layer, and the light reflectance of the laminated structure including the release layer and the gloss layer is In a transfer sheet that is 3% to 10%,
    A reflection / transmission interface that is an interface between the light reflection layer and the light transmission layer,
    By including an interference fringe inhibitor made of fine particles in the gloss layer,
    A transfer sheet characterized by having a boundary surface that generates light scattering.
  6. 樹脂成形品の最表面側に、単一層又は複数層の光透過層が形成され、前記光透過層の内側に、金属薄膜層であって前記光透過層と前記金属薄膜層からなる積層構造体の光反射率が５％～５０％である前記金属薄膜層と、艶層であって前記光透過層と前記艶層からなる積層構造体の光反射率が３％～１０％である艶層からなる群より選択される一の層である光反射層が積層された加飾樹脂成形品において、
    　前記光反射層と前記光透過層の境界面である反射・透過境界面又は光透過層間の境界面である透過・透過境界面を、
    　前記反射・透過境界面又は前記透過・透過境界面を形成する二の層のいずれかに微細粒子よりなる干渉縞防止剤を含ませることにより、
    　光散乱を生じる境界面としたことを特徴とする加飾樹脂成形品。     A single layer or a plurality of light transmission layers are formed on the outermost surface side of the resin molded product, and a laminated structure comprising a metal thin film layer inside the light transmission layer and comprising the light transmission layer and the metal thin film layer The metallic thin film layer having a light reflectance of 5% to 50% and a glossy layer, wherein the laminated structure comprising the light transmitting layer and the glossy layer has a light reflectance of 3% to 10%. In a decorative resin molded product in which a light reflecting layer that is one layer selected from the group consisting of:
    A reflection / transmission boundary surface that is a boundary surface between the light reflection layer and the light transmission layer or a transmission / transmission interface surface that is a boundary surface between the light transmission layers;
    By including an interference fringe preventing agent composed of fine particles in either the reflection / transmission interface or the two layers forming the transmission / transmission interface,
    A decorative resin molded product characterized by having a boundary surface that generates light scattering.
  7. 　樹脂成形品の最表面側に、第一光透過層である剥離層が形成され、前記剥離層の内側に第二光透過層であるアンカー層が積層され、前記アンカー層の内側に光反射層である金属薄膜層が積層されていて、前記剥離層、前記アンカー層と前記金属薄膜層からなる積層構造体の光反射率が５％～５０％である加飾樹脂成形品において、
    　前記金属薄膜層と前記アンカー層の境界面である反射・透過境界面を、
    　前記アンカー層に微細粒子よりなる干渉縞防止剤を含ませることにより、
    　光散乱を生じる境界面としたことを特徴とする加飾樹脂成形品。     A release layer that is a first light transmission layer is formed on the outermost surface side of the resin molded product, an anchor layer that is a second light transmission layer is laminated inside the release layer, and a light reflection layer is formed inside the anchor layer. In the decorative resin molded product in which the metal thin film layer is laminated, and the light reflectance of the laminated structure composed of the release layer, the anchor layer and the metal thin film layer is 5% to 50%,
    A reflection / transmission interface which is an interface between the metal thin film layer and the anchor layer;
    By including an interference fringe inhibitor made of fine particles in the anchor layer,
    A decorative resin molded product characterized by having a boundary surface that generates light scattering.
  8. 　樹脂成形品の最表面側に、光透過層である剥離層が形成され、前記剥離層の内側に艶層が積層されていて、前記剥離層と前記艶層からなる積層構造体の光反射率が３％～１０％である加飾樹脂成形品において、
    　前記光反射層と前記光透過層の境界面である反射・透過境界面を、
    　前記艶層に微細粒子よりなる干渉縞防止剤を含ませることにより、
    　光散乱を生じる境界面としたことを特徴とする加飾樹脂成形品。     A release layer, which is a light transmission layer, is formed on the outermost surface side of the resin molded product, and a gloss layer is laminated inside the release layer, and the light reflectance of the laminated structure including the release layer and the gloss layer In decorative resin molded products with a 3% to 10%
    A reflection / transmission interface that is an interface between the light reflection layer and the light transmission layer,
    By including an interference fringe inhibitor made of fine particles in the gloss layer,
    A decorative resin molded product characterized by having a boundary surface that generates light scattering.
PCT/JP2009/002512 2008-06-11 2009-06-04 Transfer sheet containing interference fringe eliminator and decorative molded resin WO2009150800A1 (en)

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