JP2010082830A - Method for producing decorative molded article with micro unevenness formed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a decorative molded article which is easy to match directions between a micro unevenness part and a pattern layer, does not cause the problem of the mold releasability of a surface resin layer, and can improve the throughput of a nanoimprint process. <P>SOLUTION: After the decorative molded article 110 with the surface resin layer 2 formed thereon is manufactured, a nanoimprint mold 20 is pressed to the surface resin layer 2 to form micro unevenness. After the nanoimprint mold 20 is separated from the surface resin layer 2, the surface resin layer 2 with the micro unevenness formed thereon is irradiated with ionizing radiation 25. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method of manufacturing a decorative molded product having a surface with a minute unevenness such as a partial mat, and after producing a decorative molded product having a surface resin layer formed on the outermost surface, the nanoimprint method is used. It is characterized by forming minute irregularities by post-processing.

  As a partial mat hard coat material, in order to match the pattern of the previously printed partial mat layer and the hard coat layer to be printed later, especially the pattern of the pattern layer, a series of processes from the partial mat layer to the hard coat layer and the pattern layer are performed. A technique for developing a partial mat hard coat material by so-called in-line printing using a printing press has been developed (see Patent Document 1).

  In this technology, a transfer material is configured such that a partial mat layer made of a water-soluble resin in which a mat material is dispersed, a hard coat layer, and an adhesive layer are laminated on a substrate sheet having peelability. The material is sandwiched between injection molds, a molding resin is injected into the cavity, and an injection molded product is obtained. At the same time, a transfer material is adhered to the surface, the mold is opened, the molded product is taken out, and the base sheet is peeled off. Thereafter, active energy rays are irradiated, and then the water-soluble resin of the partial mat layer remaining on the hard coat layer is removed by washing with water.

JP 2001-260596 A

  However, in the above method, when the hard coat layer is formed by in-line printing, it is difficult to obtain sufficient strength because the thickness of the hard coat layer can be increased only to about 2 μm in order to increase the drying speed. Therefore, in order to improve the hard coat properties, the thickness of the hard coat layer is necessary. For that purpose, the hard coat layer must be once removed from the printing press and thickly applied with a coater or the like. However, there is a problem in that the partial mat layer and the pattern layer are out of register.

  In order to solve such a problem, the present invention does not form a partial mat layer at the stage of the molded product for which the surface resin layer is first formed, and the surface resin layer is formed on the outermost surface of the decorative molded product by a method such as transfer. After forming the film, fine irregularities such as a partial mat are formed on the surface resin layer by post-processing by a nanoimprint method.

  In order to achieve the above object, the present invention has the following features.

  In the method for producing a decorative molded product according to the present invention, a surface resin layer is integrally formed on a molded resin layer that is a resin molded product so that at least the surface resin layer becomes the outermost surface, and the surface resin layer is formed on the outermost surface. After producing the decorative molded product provided, after pressing the nanoimprint mold on the surface resin layer of the decorative molded product to form micro unevenness, after separating the nanoimprint mold from the surface resin layer, A step of irradiating the surface resin layer with minute irregularities with ionizing radiation is taken.

  The method for producing a decorative molded product of the present invention comprises forming at least a surface resin layer on a substrate sheet, transferring the surface resin layer to the surface of a molded resin layer that is a resin molded product, peeling the substrate sheet, After producing a decorative molded product having a surface resin layer formed on the outermost surface, a nano-imprint mold is pressed on the surface resin layer of the decorative molded product to form minute irregularities, and the nano-imprint mold is used as the surface resin. After separating from the layer, a step of irradiating ionizing radiation to the surface resin layer on which the fine irregularities are formed is taken.

  Moreover, in the above invention, when the nano-imprint mold is pressed on the surface resin layer to form minute irregularities, the curing polymerization reaction is performed by irradiating with ionizing radiation in an unreacted state of curing polymerization and in a tack-free state. May be promoted.

  The decorative molded product of the present invention has a configuration manufactured by the method for manufacturing a decorative molded product according to any one of the above inventions.

  In the above invention, the surface resin layer has a (meth) acryl equivalent of 100 to 300 g / eq, a hydroxyl value of 20 to 500, a polymer having a weight average molecular weight of 5,000 to 50,000 and a polyfunctional isocyanate, or a melting point of 40. A mixture of an active energy ray-curable resin having a molecular weight of 5,000 to 100,000 and a photoinitiator or a glycidyl (meth) acrylate polymer obtained by addition reaction of an α, β-unsaturated monocarboxylic acid Or a resin composition containing any of the above.

  In the above invention, the minute unevenness formed on the surface resin layer may be a mat.

  In the invention described above, the minute irregularities formed on the surface resin layer may have a low reflection moth-eye structure.

  In the invention according to claim 1 to claim 2, after producing a decorative molded article having a surface resin layer formed, a nanoimprint mold is pressed on the surface resin layer to form minute irregularities, and the nanoimprint mold is After separating from the surface resin layer, ionizing radiation is irradiated to the surface resin layer on which the fine irregularities are formed. Therefore, there is an effect that it is easy to match the registration of the minute uneven portion and the pattern layer and the problem of releasability of the surface resin layer does not occur. Further, since the step of pressing the nanoimprint mold to form minute irregularities and the step of irradiating with ionizing radiation are separate, there is an effect that the throughput of the nanoimprint step can be improved.

  The invention according to claim 3 is characterized in that when the nanoimprint mold is pressed, it is in an unreacted state of curing polymerization and in a tack-free state. Therefore, since it is not a tack state as used in conventional optical nanoimprint, there is an advantage that the release from the nanoimprint mold is smooth. In addition, since it is in a state where it has not been cured and polymerized, it is in a state where it is deformed only by pressing, so there is no need for heating as in conventional thermal nanoimprinting, and as a result, steps such as cooling become unnecessary. In addition, there is an effect that the dimensional accuracy is also improved.

  In the invention according to claim 5, the surface resin layer has a (meth) acryl equivalent of 100 to 300 g / eq, a hydroxyl value of 20 to 500, a polymer having a weight average molecular weight of 5,000 to 50,000 and a polyfunctional isocyanate, or a melting point of 40. A mixture of an active energy ray-curable resin having a molecular weight of 5,000 to 100,000 and a photoinitiator or a glycidyl (meth) acrylate polymer obtained by addition reaction of an α, β-unsaturated monocarboxylic acid It consists of a resin composition containing any of these. Therefore, there is an effect that not only the nanoimprint processing is easy, but also a surface resin layer having a hard coat property after curing polymerization.

  The invention according to claims 6 to 7 is characterized in that the fine irregularities formed on the surface resin layer have a mat or low-reflection moth-eye structure, and therefore it is easy to perform nanoimprint processing and has a hard coat property. However, there is an effect that the mat has a design property or low reflection functionality.

  Embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 4 are cross-sectional views showing a method for producing a decorative molded product of the present invention. In the figure, 1 is a molded resin layer, 2 is a surface resin layer, 3 is a pattern layer, 5 is a fine uneven portion, 9 is a release layer, 11 is an anchor layer, 12 is an adhesive layer, 20 is a nanoimprint mold, 25 Is an ionizing radiation, 30 is a transfer sheet, 31 is a base sheet, 35 is a molded sheet, and 110 is a decorative molded product. In addition, the same code | symbol is attached | subjected about the same component in each figure.

  In the first embodiment of the present invention, the surface resin layer 2 is integrally formed on the molded resin layer 1 which is a resin molded product so that at least the surface resin layer 2 becomes the outermost surface while appropriately providing the pattern layer 3 in the middle. Then, after producing the decorative molded product 110 provided with the surface resin layer on the outermost surface (see FIGS. 2A to 2C), the nanoimprint mold 20 is applied to the surface resin layer 2 of the decorative molded product 110. Is pressed to form fine irregularities 5 (see FIG. 1A), and after the nanoimprint mold 20 is separated from the surface resin layer 2, ionizing radiation is applied to the fine irregularities 5 of the surface resin layer 2. 25 (see FIG. 1B).

  In the second embodiment of the present invention, first, a transfer sheet 30 is prepared, in which at least the surface resin layer 2 is provided on the base sheet 31 and the pattern layer 3 is appropriately laminated thereon (see FIG. 3 (a)), the transfer sheet 30 is laminated on the surface of the molded resin layer 1, and after applying heat or pressure (see FIG. 3B), the base sheet 31 is peeled off, and the transfer sheet 30 After the surface resin layer 2 and the pattern layer 3 are transferred to the surface of the molded resin layer 1 to produce a decorative molded product 110 (see FIG. 3C), the nanoimprint gold is applied to the surface resin layer 2 of the decorative molded product 110. The mold 20 is pressed to form fine irregularities 5 (see FIG. 4A), and after the nanoimprint mold 20 is separated from the surface resin layer 2, the fine irregularities 5 on the surface resin layer 2 are formed. Irradiating with ionizing radiation 25 (see FIG. 4B) .

  In the first embodiment, the surface resin layer 2 is configured to be the outermost surface of the decorative molded product 110. In the second embodiment, the surface resin layer 2 is configured to peel from the base sheet 31 or the release layer 9 provided as necessary to be the outermost surface of the decorative molded product 110. The surface resin layer 2 is in a state in which no curing polymerization is performed and a tack-free state when the nano-imprint mold 20 is pressed to form a fine concavo-convex portion 5. Select a material that promotes

  In particular, as the surface resin layer 2, a polymer having a (meth) acrylic equivalent of 100 to 300 g / eq, a hydroxyl value of 20 to 500, a weight average molecular weight of 5,000 to 50,000, and a polyfunctional isocyanate, or a melting point of 40 ° C. or higher and a molecular weight of 5 Any of a mixture of an active energy ray-curable resin and a photoinitiator polymerization agent having a molecular weight of 1,000 to 100,000, or a glycidyl (meth) acrylate polymer obtained by addition reaction of an α, β-unsaturated monocarboxylic acid. The resin composition to be contained is preferable in that it has not only the above-mentioned properties but also a hard coat property with a pencil hardness of 3H or more after curing polymerization. The surface resin layer 2 may be colored or uncolored. As a method for forming the surface resin layer 2, there are coating methods such as a gravure coating method, a roll coating method, and a comma coating method.

Note that the state of unreacted curing polymerization does not mean that no curing polymerization has occurred, but does not mean that the main curing polymerization reaction has occurred, and includes cases in which a slight curing polymerization reaction has occurred. The tack-free state refers to a state where the surface resin layer 2 does not visually touch the finger even when the outermost surface is touched with a finger at a pressure of 1 g weight / cm ² .

  The surface resin layer 2 is preferably formed to a thickness of 0.5 to 50 μm. This is because if the thickness of the surface resin layer 2 is less than 0.5 μm, the hard coat property and chemical resistance tend to be insufficient, and if the thickness of the surface resin layer 2 exceeds 50 μm, the productivity decreases.

  Next, a method for forming a large number of fine irregularities 5 on a part or all of the surface resin layer 2 by using a nanoimprint method on the surface resin layer 2 will be described. The nanoimprint method is a processing method in which a stamper is pressed against the surface resin layer 2 to form fine uneven portions 5 on the surface resin layer 2. Typical examples of the nanoimprint method include a thermal nanoimprint method, an optical nanoimprint method, and a room temperature nanoimprint method. In the present invention, fine irregularities 5 are formed on the surface resin layer 2 by a room temperature nanoimprint method or a thermal nanoimprint method at a low temperature. This eliminates the need for a process such as cooling, improves the throughput, and improves the dimensional accuracy.

  As a method of nanoimprinting, a stamper made of nickel electroforming is first produced from a master mold drawn with an electron beam, etc., then placed on the surface resin layer 2 and pressed under high pressure, and the stamper is placed on the surface. The fine uneven | corrugated | grooved part 5 is formed in the surface resin layer 2 by removing from the resin layer 2 (refer Fig.1 (a) and FIG.4 (a)). Moreover, the temperature at the time of pressing is set to normal temperature or 60 degrees C or less, and a pressure is generally set to several MPa. After pressing the stamper under the conditions, the stamper is removed from the surface resin layer 2 and the ionizing radiation 25 is irradiated to the fine irregularities 5 formed on the surface resin layer 2 (FIGS. 1B and 4B). )reference). By this irradiation, the curing polymerization reaction of the surface resin layer 2 that has not undergone the curing polymerization reaction is started, and the tough hard coat property / chemical resistance surface resin layer 2 is formed.

  Examples of the ionizing radiation 25 include radio waves, visible rays, ultraviolet rays, infrared rays, X-rays, gamma rays, particle rays, and electron beams.

  Examples of the surface shape of a large number of fine irregularities 5 include lines, polygons, circles, or combinations of these. Further, examples of the cross-sectional shape include U-shaped, V-shaped, and U-shaped uneven shapes (see FIGS. 5A to 5C). Among them, if a structure in which a large number of irregular pyramids or conical pyramids with a pitch of 10 to 50 μm and a depth of about 1 μm are arranged in an orderly manner, a mat-like high-quality design is exhibited. Preferred (see FIG. 6). A shape called a moth-eye structure (see FIG. 7) in which a large number of pyramids or conical pillars are regularly and regularly arranged with a pitch of 100 to 400 nm is preferable because it has an antireflection function. However, the surface shape of these many fine irregularities 5 is not limited to the above example.

  As a method for providing a large number of fine irregularities 5 at a desired position of the surface resin layer 2, a position where nanoimprinting is performed is fixed in advance, and a decorative molded product 110 is placed so as to match the position. And a method for determining the positional relationship between the plurality of fine irregularities 5 and the like.

  The transfer sheet 30 has a configuration in which a release layer 9 is formed on a base sheet 31 as necessary, and a surface resin layer 2 and a pattern layer 3 are sequentially stacked on the base sheet 31 or the release layer 9 (FIG. 3 (a)).

  The release layer 9 formed as necessary is released from the surface resin layer 2 together with the base sheet 31 when the base sheet 31 is peeled off after transfer. As a material of the release layer 9, melamine resin release agent, silicone resin release agent, fluororesin release agent, cellulose derivative release agent, urea resin release agent, polyolefin resin release agent Paraffin type release agents and composite release agents thereof can be used. As a method for forming the release layer, there are a coating method such as a roll coating method and a spray coating method, a printing method such as a gravure printing method and a screen printing method.

  The pattern layer 3 is a layer for performing decoration such as various patterns and characters, and as materials, polyvinyl resin, polyamide resin, polyester resin, acrylic resin, polyurethane resin, polyvinyl acetal resin, A colored ink containing a resin such as a polyester urethane resin, a cellulose ester resin, or an alkyd resin as a binder and an appropriate color pigment or dye as a colorant may be used. As a method for forming the print layer, a normal printing method such as a gravure printing method, a screen printing method, or an offset printing method may be used. In particular, the offset printing method and the gravure printing method are suitable for performing multicolor printing and gradation expression. In the case of a single color, a coating method such as a gravure coating method, a roll coating method, or a comma coating method may be employed. The pattern layer may be provided in an arbitrary pattern depending on the pattern to be expressed. Further, if necessary, the metal film layer may be formed by a vacuum deposition method, a sputtering method, an ion plating method, a plating method, or the like. The metal film layer uses a metal such as aluminum, tin, nickel, gold, platinum, chromium, iron, copper, indium, silver, titanium, lead, zinc, or an alloy or compound thereof depending on the transparent color to be expressed. .

  In order to improve the adhesion between the pattern layer 3 and the surface resin layer 2, an anchor layer 11 may be provided. As the material of the anchor layer 11, two-component cured urethane resin, thermosetting urethane resin, melamine resin, cellulose ester resin, chlorine-containing rubber resin, chlorine-containing vinyl resin, acrylic resin, epoxy resin, vinyl A copolymer resin may be used. Examples of the method for forming the anchor layer 11 include a coating method such as a gravure coating method, a roll coating method, and a comma coating method, and a printing method such as a gravure printing method and a screen printing method.

  Moreover, you may form the contact bonding layer 12 on the pattern layer 3 entirely or partially as needed. The adhesive layer 12 adheres each of the above layers to the surface of the object to be decorated. Further, the adhesive layer 12 is formed in a portion to be bonded. That is, when the part to be bonded is the entire surface, the adhesive layer 12 is formed on the entire surface. If the part to be bonded is partial, the adhesive layer 12 is partially formed. As the adhesive layer 12, a heat-sensitive or pressure-sensitive resin suitable for the material to be decorated is appropriately used. For example, when the material of the object to be decorated is an acrylic resin, an acrylic resin may be used. If the material to be decorated is polyphenylene oxide / polystyrene resin, polycarbonate resin, styrene copolymer resin, or polystyrene blend resin, acrylic resin, polystyrene resin, polyamide having affinity with these resins A series resin or the like may be used. Furthermore, when the material of the object to be decorated is a polypropylene resin, a chlorinated polyolefin resin, a chlorinated ethylene-vinyl acetate copolymer resin, a cyclized rubber, or a coumarone indene resin can be used. Examples of the method for forming the adhesive layer 12 include a coating method such as a gravure coating method, a roll coating method, and a comma coating method, a printing method such as a gravure printing method, and a screen printing method.

  Using the transfer sheet 30 configured as described above, the surface resin layer 2 and the print layer 3 are transferred to the surface of the molding resin layer 1 by using a simultaneous molding method by injection molding or the like, and the decorative molded product 110 is transferred. Can be produced (see FIGS. 3A to 3C). Hereinafter, a method for transferring to the surface of the molded resin layer 1 that is an object to be decorated will be described.

  First, the transfer sheet 30 is fed into a molding die composed of a movable die and a fixed die. At that time, the single transfer sheet 30 may be fed one by one, or a necessary part of the long transfer sheet 30 may be intermittently fed. When the long transfer sheet 30 is used, it is preferable to use a feeding device having a positioning mechanism so that the register of the pattern of the transfer sheet 30 and the molding die coincide. Further, when the transfer sheet 30 is intermittently fed, if the transfer sheet 30 is fixed by the movable mold and the fixed mold after the position of the transfer sheet 30 is detected by the sensor, the transfer sheet 30 is always kept at the same position. This is convenient because it can be fixed and the positional deviation of the pattern does not occur.

  After the molding die is closed, the molten resin is injected and filled into the die from the gate, and the transfer sheet 30 is adhered to the surface at the same time as the object to be decorated is formed. After cooling the decorative molded product 110, which is the object to be decorated, the molding die is opened and the decorative molded product 110 is taken out. Finally, the transfer is completed by removing the base sheet 31.

  Next, a method for decorating the surface of the object to be decorated using the transfer method will be described. First, the adhesive layer 12 side of the transfer sheet 30 is brought into close contact with the surface of the object to be decorated. Next, using a transfer machine such as a roll transfer machine or an up-down transfer machine equipped with a heat-resistant rubber-like elastic body such as silicon rubber, a heat-resistant rubber-like condition set at a temperature of about 80 to 260 ° C. and a pressure of about 490 to 1960 Pa. Heat and pressure are applied from the base sheet 31 side of the transfer sheet 30 through the elastic body. By doing so, the adhesive layer 12 adheres to the surface of the transfer object. Finally, when the base sheet 31 is peeled off after cooling, peeling occurs at the boundary surface between the base sheet 31 and the surface resin layer 2, and the transfer is completed.

  As a to-be-decorated thing, what consists of various materials, such as a resin molded product, can be used. The object to be decorated may be transparent, translucent, or opaque. Moreover, even if the to-be-decorated object is colored, it does not need to be colored. Examples of the molding resin include general-purpose resins such as polystyrene resin, polyolefin resin, ABS resin, AS resin, and AN resin. Also, general engineering resins such as polyphenylene oxide / polystyrene resins, polycarbonate resins, polyacetal resins, acrylic resins, polycarbonate-modified polyphenylene ether resins, polybutylene terephthalate resins, ultrahigh molecular weight polyethylene resins, polysulfone resins, polyphenylene sulfide resins Super engineering resins such as polyphenylene oxide resins, polyarylate resins, polyetherimide resins, polyimide resins, liquid crystal polyester resins, and polyallyl heat-resistant resins can also be used. Furthermore, composite resins to which reinforcing materials such as glass fibers and inorganic fillers are added can also be used.

  After providing a pattern layer having a predetermined pattern on a molded resin layer which is a resin molded product using a polycarbonate-based resin as a molded resin, (meth) acrylic equivalent 100 to 300 g / eq, hydroxyl value 20 to 500, weight average A surface resin layer composed of a polymer having a molecular weight of 5,000 to 50,000 and a polyfunctional isocyanate was provided on the entire surface with a thickness of 10 μm to produce a decorative molded product. Next, the nanoimprint mold in which a large number of irregular pyramid-shaped pyramids having a pitch of 10 to 50 μm and a depth of about 1 μm are regularly arranged is pressed on a part of the surface resin layer of the decorative molded product to make fine After forming an uneven part and separating the nanoimprint mold from the surface resin layer, the fine uneven part of the surface resin layer was irradiated with ultraviolet rays.

  The decorative molded product after irradiation with ultraviolet rays was harmonized with the fine irregularities of the pattern layer and the surface resin layer, and exhibited a high-quality design with a matte tone. The surface resin layer had a very hard coating property with a pencil hardness of 5H.

  Surface resin comprising a glycidyl (meth) acrylate polymer obtained by adding a melamine resin release layer and an α, β-unsaturated monocarboxylic acid on a polyester resin film having a thickness of 38 μm as a base sheet. A transfer sheet provided with a layer of 15 μm in thickness and an acrylic resin pattern layer and urethane resin adhesive layer on it is prepared separately, and a molded resin using an acrylic resin as the molding resin. Laminate on a molding resin layer, leave it for one day, peel off the base sheet, transfer the surface resin layer, pattern layer, and adhesive layer of the transfer sheet onto the surface of the molding resin layer to produce a decorative molded product did. Next, press the nanoimprint mold on which a large number of irregularly cone-shaped pyramid shapes with a pitch of 10 to 50 μm and a depth of about 1 μm are pressed on the surface resin layer of the decorative molded product to form fine protrusions. After the formation and separation of the nanoimprint mold from the surface resin layer, ultraviolet rays were irradiated to fine convex portions of the surface resin layer.

  The decorative molded product after irradiation with ultraviolet rays was harmonized with the fine irregularities of the pattern layer and the surface resin layer, and exhibited a high-quality design with a matte tone. The surface resin layer had a very good hard coat property with a pencil hardness of 4H.

  A polyester resin film having a thickness of 38 μm is used as a base sheet, a melamine resin release layer, an active energy ray-curable resin having a melting point of 40 ° C. or higher and a molecular weight of 5,000 to 100,000, and a photoinitiator polymerizer. Molding resin, which is a resin molded product using a polystyrene resin as a molding resin, with a separate transfer sheet provided with a surface resin layer made of a mixture of the above and a pattern layer made of acrylic resin and an adhesive layer thereon After laminating on the layer and pressing with a 200 ° C. rubber roll moving at a speed of 1 m / min, the base sheet is peeled off, and the surface resin layer, pattern layer, and adhesive layer of the transfer sheet are transferred to the surface of the molded resin layer, A decorative molded product was produced. Next, the nanoimprint mold is pressed by pressing a nanoimprint mold having a structure in which a large number of square pyramid pillars are regularly and regularly arranged on the surface resin layer of the decorative molded product. After the mold was pulled away from the surface resin layer, ultraviolet rays were applied to the fine irregularities of the surface resin layer.

  The decorative molded product after irradiation with ultraviolet rays exhibited a design having an antireflection function in which the pattern layer and the fine uneven portions of the surface resin layer are in harmony. The surface resin layer had a very hard coating property with a pencil hardness of 5H.

  The present invention can be suitably used in various molded products such as communication devices such as mobile phones, electronic information devices, liquid crystal displays, and solar cells, and is industrially useful.

It is sectional drawing which shows the process of irradiating a nanoimprint process and ionizing radiation among the manufacturing methods of the decorative molded product which concerns on this invention. It is sectional drawing which shows the process of providing a surface resin layer etc. on a shaping | molding resin layer among the manufacturing methods of the decorative molded product which concerns on this invention. It is sectional drawing which shows another process of providing a surface resin layer etc. on a molded resin layer among the manufacturing methods of the decorative molded product which concerns on this invention. It is sectional drawing which shows the process of irradiating a nanoimprint process and ionizing radiation among the manufacturing methods of the decorative molded product which concerns on this invention. It is a cross-sectional shape of the fine uneven | corrugated | grooved part of the surface resin layer in the decorative molded product obtained by the manufacturing method of the decorative molded product which concerns on this invention. It is the schematic of the fine uneven part of the surface resin layer in the decorative molded product obtained by the manufacturing method of the decorative molded product which concerns on this invention. It is another schematic diagram of the fine unevenness | corrugation part of the surface resin layer in the decorative molded product obtained by the manufacturing method of the decorative molded product which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Molding resin layer 2 Surface resin layer 3 Picture layer 5 Fine uneven part 9 Release layer 11 Anchor layer 12 Adhesive layer 20 Nanoimprint metal mold 25 Ionizing radiation 30 Transfer sheet 31 Base sheet 110 Decorated molded product

Claims (7)

  After integrally molding the surface resin layer on the molded resin layer that is a resin molded product so that at least the surface resin layer becomes the outermost surface, to produce a decorative molded product provided with the surface resin layer on the outermost surface, A nano-imprint mold is pressed on the surface resin layer of the decorative molded product to form minute irregularities, and after the nano-imprint mold is separated from the surface resin layer, ionizing radiation is applied to the surface resin layer on which the minute irregularities are formed. A method for producing a decorative molded product, characterized by irradiating with light.   A decoration in which at least a surface resin layer is formed on a substrate sheet, the surface resin layer is transferred to the surface of a molded resin layer that is a resin molded product, the substrate sheet is peeled off, and a surface resin layer is formed on the outermost surface After producing the molded product, the nano-imprint mold is pressed on the surface resin layer of the decorative molded product to form fine irregularities, and after the nano-imprint mold is separated from the surface resin layer, the fine irregularities are formed. A method for producing a decorative molded product, comprising irradiating a surface resin layer with ionizing radiation.   When the nano-imprint mold is pressed on the surface resin layer to form minute irregularities, it is in a state that is not cured and unreacted and is tack-free, and the curing polymerization reaction is accelerated by irradiation with ionizing radiation. The manufacturing method of the decorative molded product in any one of Claims 1-2.   The decorative molded product manufactured with the manufacturing method of the decorative molded product in any one of the said Claims 1-3.   The surface resin layer has a (meth) acryl equivalent of 100 to 300 g / eq, a hydroxyl value of 20 to 500, a polymer having a weight average molecular weight of 5,000 to 50,000 and a polyfunctional isocyanate, or a melting point of 40 ° C. or higher and a molecular weight of 5,000. A resin comprising any one of a mixture of an active energy ray-curable resin and a photoinitiator polymer which is ˜100,000, or a glycidyl (meth) acrylate polymer obtained by addition reaction of an α, β-unsaturated monocarboxylic acid It consists of a composition, The decorative molded product of Claim 4 characterized by the above-mentioned.   The decorative molded product according to any one of claims 4 and 5, wherein the minute unevenness formed on the surface resin layer is a mat. The decorative molded product according to any one of claims 4 and 5, wherein the minute unevenness formed on the surface resin layer has a low reflection moth-eye structure.

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