JP2011011378A - Transfer sheet, method of manufacturing transfer sheet, and transfer article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer sheet in which poor printing of a matte layer is eliminated, required thickness of a hard coat layer is easily secured, and a surface of a molding is decorated in a mat-like partial manner.SOLUTION: A transfer sheet 10 includes a base sheet 11, a matte layer 12 formed on one surface of the base sheet 11, a first hard coat layer 13 formed on the top surface of the matte layer 12, a second hard coat layer 14 formed on the first hard coat layer 13, a pattern layer 15 formed on the second hard coat layer 14, and an adhesive layer 16 formed on the pattern layer. The matte layer 12 is formed all over a transfer region and the surface is composed of a mat-like concavo-convex shape. The first hard coat layer 13 includes a hard part 20 which has cured being irradiated with an active energy beam and a non-cured part 21 which has maintained a condition of not cured.

Description

  The present invention relates to a transfer sheet, and more particularly to a transfer sheet in which a transfer layer is transferred to partially decorate the surface of a molded body in a mat shape.

  Conventionally, there is a transfer sheet used for decorating the surface of a molded body such as a case of a mobile phone or a notebook computer. This transfer sheet is composed of a base sheet and a transfer layer formed on one surface thereof. The surface of the molded body is decorated by heating and pressing to bring the transfer layer into close contact with the molded body, peeling the substrate sheet, and transferring the transfer layer to the molded body. Alternatively, the molding is performed by injection molding and fixing the transfer layer to the surface of the molding and peeling the base sheet. In decorating, in order to improve the surface strength, a hard coat layer composed of an active energy ray curable resin is formed on the outermost surface after transfer, and the surface of the hard coat layer is one of the design variations. May be partially formed in a mat shape (see Patent Document 1).

  Referring to (1) of FIG. 3, a transfer sheet 50 that is partially decorated in a mat shape includes a base sheet 51, a mat layer 52 partially formed on one surface of the base sheet 51, and a gloss. A hard coat layer 54 formed on one surface of the base sheet 51 so as to cover the decoloring layer 52, a design layer 55 formed on the upper surface of the hard coat layer 54, and an adhesive layer formed on the upper surface of the design layer 55 56. The matte layer 52 is embedded in the hard coat layer 54, and is made of a material that has high adhesion to the base sheet 51, is excellent in peelability from the hard coat layer 54, and is easily dried. The upper surface of the matte layer 52 is formed in a mat shape. The matte layer 52 is partially printed at a desired position on the upper surface of the base sheet 51 by a printing method such as gravure printing.

  Referring to (2) of FIG. 3, in order to decorate the molded body 57 using the transfer sheet 50, for example, the transfer sheet 50 is formed on the molded body 57 with the surface on the adhesive layer 56 side facing the molded body 57. Then, the transfer sheet 50 is brought into close contact with the molded body 57 by heating and pressurizing using a transfer machine. When the base sheet 51 is peeled after cooling, the base sheet 51 is peeled off at the interface between the matte layer 52 and the matte layer 52 and the hard coat layer 54. In this manner, the decorative article 60 is manufactured by decorating the molded body 57. The surface of the decorative product 60 is covered with the hard coat layer 54 and has a design of the mat portion 58. The hard coat layer 54 of the mat portion 58 is thinner than the other portions because the matte layer 53 is embedded.

Japanese Patent No. 3017175

  In the conventional transfer sheet as described above, the matte layer 52 using a material having predetermined characteristics is partially formed by printing such as gravure printing. Due to the characteristics of the printing press and the ink characteristics of the matte layer 52, the ink of the matte layer 52 is printed out of the outer edge of the part that you want to make a mat or attached to the part that you do not want to make a mat. May occur. If the molded body 57 is decorated using this transfer sheet, an unnecessary portion in the decoration range is matted. Further, since the thickness of the hard coat layer 54 is reduced in the mat portion 58, if the necessary thickness of the hard coat layer 54 is secured with respect to the mat portion 58 in the product after transfer, the portions other than the mat portion 58 are secured. The thickness of becomes excessive. Further, since the upper surface of the mat portion 58 is uneven, it is unstable to secure the necessary thickness of the hard coat layer 54.

  The present invention has been made to solve the above-described problems, and partially eliminates the surface of a molded body that eliminates printing defects of the matte layer and facilitates securing the necessary thickness of the hard coat layer. An object of the present invention is to provide a transfer sheet that is decorated in a mat shape.

  In order to achieve the above object, a first invention is a transfer sheet in which a part of a transfer region can be formed into a mat shape, and is a base sheet and a surface formed on one surface of the base sheet Are formed on the top surface of the matte matte layer and the matte layer, are made of an active energy ray-curable resin, and have a first hard coat layer that is peelable from the matte layer in an uncured state; An uncured second hard coat layer made of an active energy ray-curable resin and formed on the hard coat layer, the first hard coat layer comprising a cured portion irradiated with active energy rays and cured; And an uncured portion that maintains the above state.

  If comprised in this way, a matte layer is formed in the whole transfer area | region, and a mat-like part and a non-mat-like part are formed with a 1st hard-coat layer.

  A second invention is a transfer sheet according to the configuration of the first invention, wherein the first hard coat layer and the second hard coat layer are made of the same resin.

  If comprised in this way, the adhesiveness of the unhardened part of a 1st hard-coat layer and a non-hardened 2nd hard-coat layer will improve.

  3rd invention is the manufacturing method of the transfer sheet which can make a part of transfer area into mat shape, Comprising: The process of forming the mat-like matte layer on the surface of a base sheet, Matte layer Forming a first hard coat layer comprising an active energy ray-curable resin on the upper surface of the first hard coat layer and having an exfoliation property with respect to the matte layer in an uncured state, and active energy in a part of the first hard coat layer A step of forming a cured portion by irradiating with a line and a second hard layer comprising an active energy ray-curable resin on the first hard coat layer and having a releasability from the matte layer in an uncured state And a step of forming a coat layer.

  If comprised in this way, a mat-like part and a non-mat-like part will be formed with a 1st hard-coat layer, without forming a matte layer partially.

  4th invention is equipped with the molded object and the transfer sheet of 1st or 2nd invention fixed to the surface of the molded object, and a transfer sheet is a molded object in the surface by which the 2nd hard-coat layer was formed. The transfer product was fixed to the surface of the substrate, and the base sheet, the matte layer and the cured part were peeled off.

  If comprised in this way, the surface of the unhardened part of a 1st hard-coat layer will become a mat shape. The second hard coat layer has a smooth surface and no partial loss of thickness due to the mat shape.

  As described above, in the first invention, the matte layer is formed on the entire transfer region, and the matte portion and the non-matt portion are formed by the first hard coat layer. Therefore, it is not necessary to print the matte layer partially according to the desired design, the entire surface can be printed, and the matte layer is printed even on unnecessary portions in the transfer area. Print defects in the layer can be eliminated.

  In the second invention, in addition to the effects of the first invention, the adhesion between the uncured portion of the first hard coat layer and the second hard coat layer is improved, so that the surface scratch resistance is improved after transfer. A transferred product can be obtained.

  In the third invention, the matte portion and the non-matt portion are formed by the first hard coat layer without the matte layer being partially formed. Therefore, it is not necessary to partially print the matte layer in accordance with a desired design, the entire surface can be printed, and the yield rate of the transfer sheet in which a part of the transfer region is mat-like can be improved.

  In the fourth invention, since the surface of the uncured portion of the first hard coat layer has a mat shape, a transfer product having a partially mat surface can be obtained without using a partial matte layer. it can. Since the second hard coat layer has a smooth surface and does not have a partial loss of thickness due to mat-like formation, it is easy to ensure desired scratch resistance, and a transfer product with stable scratch resistance can be obtained.

(1) is a cross-sectional view showing a schematic configuration of a transfer sheet according to the first embodiment of the present invention, and (2) is a schematic configuration of a transfer product manufactured using the transfer sheet shown in (1). It is sectional drawing which showed. It is the figure which showed the manufacturing process of the transfer sheet shown by (1) of FIG. (1) is a cross-sectional view showing a schematic configuration of a conventional transfer sheet, and (2) is a cross-sectional view showing a schematic configuration of a transfer product manufactured using the transfer sheet shown in (1). is there.

  Next, embodiments of the invention will be described with reference to the drawings.

  Referring to (1) of FIG. 1, a transfer sheet 10 according to the first embodiment of the present invention includes a base sheet 11, a mat layer 12 formed on one surface of the base sheet 11, and a mat layer. A first hard coat layer 13 formed on the upper surface of the first hard coat layer 12, a second hard coat layer formed on the first hard coat layer 13, and a pattern layer 15 formed on the second hard coat layer 14. And an adhesive layer 16 formed on the design layer. The matte layer 12 is formed on the entire surface of the transfer region, and the surface is formed in a mat-like uneven shape. The first hard coat layer 13 and the second hard coat layer 14 are also formed on the entire surface of the transfer region. The first hard coat layer 13 and the second hard coat layer 14 are made of an active energy ray curable resin. The first hard coat layer 13 has releasability from the matte layer 12 in an uncured state. In other words, when the base sheet 11 is peeled off, the matte layer 12 is peeled off with the interface between the matte layer 12 and the uncured first hard coat layer 13 as a boundary while the matte layer 12 is fixed to the base sheet 11. The 1st hard-coat layer 13 is comprised from the hardening part 20 which the active energy ray irradiated and hardened | cured, and the unhardened part 21 which maintained the unhardened state. The uncured portion 21 constitutes a mat-like portion on the surface of the transferred material 17 after the transfer. For example, the cured portion 20 and the uncured portion 21 are pattern-designed according to the design layer 15. The second hard coat layer 14 has peelability with respect to the cured portion 20 in an uncured state, and has stickiness with respect to the first hard coat layer 13. The curing unit 20 is fixed to the matte layer 20 in order to cure by irradiating active energy rays before forming the second hard coat layer 14. If the base sheet 11 is peeled off, it is peeled off with the interface between the cured portion 20 and the second hard coat layer 14 as a boundary. The second hard coat layer 14 is formed on the entire transfer region. The transfer sheet 10 may be provided with other layers such as an anchor layer that protects the peeled pattern layer 15 and improves interlayer adhesion as long as the base sheet 11 can be peeled off at a predetermined interface. You may provide multiple layers of the same kind, such as a plurality of design layers.

  The base sheet 11 is a sheet body that supports the transfer layer. As the substrate sheet 11, a known transfer sheet substrate sheet can be used. Constituent materials of the base sheet 11 include polyester resins such as polyethylene terephthalate, polypropylene resins, acrylic resins, polycarbonate resins, polyamide resins, polyimide resins, olefin resins, urethane resins, and acrylonitrile butadiene styrene resins. Preferably, at least one synthetic resin selected from the group consisting of: Examples of the base sheet 11 include a single layer sheet formed from the above synthetic resin, a laminated sheet in which two or more single layer sheets are stacked, a copolymer sheet using the above synthetic resin, and the like.

  The thickness of the base sheet 11 is preferably 5 μm to 500 μm. When the thickness of the base sheet 11 is 5 μm or more, handling properties can be ensured, and when the thickness is 500 μm or less, the rigidity does not become too large, and deformation followability to the transfer surface can be ensured.

  The matte layer 12 is a layer that decorates the surface of the transfer object in a mat shape. The matte layer 12 is a layer that peels together with the base sheet 11 while being fixed to the base sheet 11 when the base sheet 11 is peeled off after transfer. The constituent material of the matte layer 12 is at least one synthetic compound selected from the group consisting of amino alkyd resins, epoxy resins, melamine resins, urea resins, polyurethane resins, polyester resins, and phenol resins. Preferred is a resin in which a powdery material such as silica or alumina or resin beads are dispersed. It may be a copolymer resin or a mixed resin of the above synthetic resins. For example, when an epoxy / melamine mixed resin is used, the matte layer 12 is a layer that is relatively quick to dry and excellent in peelability from the first hard coat layer 13 and the second hard coat layer 14. Further, the matte layer 12 may contain an acid catalyst such as para-toluenesulfonic acid. After the mat layer 12 is formed on the base sheet 11, the surface has a mat-like uneven shape.

  The matte layer 12 does not contain resin beads or the like, the resin material or the like is contained in the constituent material of the base sheet, the surface of the base sheet itself is formed in a mat-like uneven shape, and the matte surface is matted. The layer 12 may be formed, and the surface of the formed matte layer 12 may have a mat-like uneven shape.

  The first hard coat layer 13 and the second hard coat layer 14 are layers that become the outermost layer of the transfer product 30 after transfer, and are layers for ensuring the surface strength of the transfer product 30 and improving the scratch resistance. . Further, the uncured portion 21 of the first hard coat layer 13 is a layer whose surface is formed in a concavo-convex shape and the surface of the transfer product 30 is matted. For the uncured portion 21, the first hard coat layer 13 is transferred, so the second hard coat layer 14 does not constitute the outermost layer. An active energy ray curable resin is used as a constituent material of the first hard coat layer 13 and the second hard coat layer 14, and a photo curable resin such as an ultraviolet curable resin or a radiation curable resin such as an electron beam curable resin. Preferably, at least one synthetic resin selected from the group consisting of: For example, urethane acrylate resins and cyanoacrylate resins can be used. In order to make the first hard coat layer 13 and the second hard coat layer 14 in a semi-cured state, an additive such as isocyanate may be added. When heat is applied, a part of the monomer or oligomer can be cross-linked into a semi-cured state. In a semi-cured state, fluidity and adhesiveness are suppressed while securing ease of deformation into a three-dimensional shape, and handling of the transfer sheet 10 during storage, transportation, transfer, etc. can be made better. In this invention, uncured includes the semi-cured state.

  The thickness of the first hard coat layer 13 and the second hard coat layer 14 is preferably 0.5 μm to 50 μm. If the thickness of the 1st hard coat layer 13 and the 2nd hard coat layer 14 is 0.5 micrometer or more, sufficient adhesiveness can be obtained, and if it is 50 micrometers or less, the 1st hard coat layer 13 and the 2nd It is easy to dry the hard coat layer 14 after transfer. The first hard coat layer 13 and the second hard coat layer 14 may be colored or uncolored.

  The symbol layer 15 is a layer for expressing characters and symbols. The pattern layer 15 is formed using a colored ink containing at least a colorant and a synthetic resin as a binder. Synthetic resins that serve as binders for the pattern layer include polyvinyl resins, polyamide resins, polyester resins, acrylic resins, polyurethane resins, polyvinyl acetal resins, polyester urethane resins, cellulose ester resins, alkyd resins, and chlorides. At least one selected from the group consisting of vinyl vinyl acetate copolymer resins, thermoplastic urethane resins, methacrylic resins, acrylic ester resins, chlorinated rubber resins, polyethylene chloride resins and polypropylene chloride resins A synthetic resin is preferred. Examples of the colorant contained in the colored ink of the pattern layer 15 include pigments and dyes. Examples of pigments include (1) plant dyes such as indigo, alizarin, carsamine, anthocyanin, flavonoid, shikonin, (2) food dyes such as azo, xanthene, triphenylmethane, and (3) natural inorganic pigments such as loess and green earth. (4) Calcium carbonate, titanium oxide, aluminum lake, mudder lake, cochineal lake and the like are preferable.

  The thickness of the pattern layer 15 is preferably 0.5 μm to 50 μm. If the thickness of the design layer 15 is 0.5 μm or more, the design expression is easy, and if it is 50 μm or less, the design layer 15 can be easily dried after transfer. The design layer is formed entirely or partially depending on the design to be expressed. The design layer is formed entirely or partially depending on the design to be expressed. The width of the design expression can be expanded by matching the positions of the uncured portion 21 having the mat shape and the design of the design layer 15.

  When it is desired to express metallic luster as a pattern, the pattern layer 15 is constituted by a metal thin film layer formed by a vacuum deposition method, a sputtering method, an ion plating method, a plating method or the like. The metal thin film layer is selected from, for example, at least one metal selected from the group consisting of aluminum, nickel, gold, platinum, chromium, iron, copper, tin, indium, silver, titanium, lead and zinc, from the above group An alloy containing at least one metal or a compound containing at least one compound selected from the above group is used. The design layer is formed entirely or partially depending on the design to be expressed. The metal thin film layer may be partially formed by etching or the like.

  The adhesive layer 16 is a layer for improving the adhesiveness between the transfer target 17 and the transfer layer. The constituent material of the adhesive layer 16 is not particularly limited as long as sufficient adhesiveness to the transfer target 17 can be obtained. When the adhesive layer 16 is heat-pressed, a synthetic resin having heat sensitivity and pressure sensitivity may be appropriately selected as a constituent material of the adhesive layer 16. For example, when the constituent material of the surface portion of the transfer object 17 is a polyacrylic resin, it is preferable to use a polyacrylic resin as the constituent material of the adhesive layer 16. For example, when the constituent material of the surface portion of the transferred object 17 is a polyphenylene oxide copolymer, a polystyrene copolymer resin, a polycarbonate resin, a styrene resin, or a polystyrene blend resin, the configuration of the adhesive layer 16 is used. As a material, a polyacrylic resin, a polystyrene resin, a polyamide resin, or the like having an affinity for these resins may be appropriately selected and employed. Further, for example, when the constituent material of the surface portion of the transferred body 17 is a polypropylene resin, the constituent material of the adhesive layer 16 is a chlorinated polyolefin resin, a chlorinated ethylene-vinyl acetate copolymer resin, a cyclic rubber, a rubber, or the like. Maron indene resin can be used.

  The thickness of the adhesive layer 16 is preferably 0.5 μm to 50 μm. If the thickness of the adhesive layer 16 is 0.5 μm or more, sufficient adhesiveness can be obtained more easily and reliably, and if it is 50 μm or less, the adhesive layer 16 can be easily dried after transfer.

  Next, a method for manufacturing the transfer sheet 10 will be described.

  Referring to (1) of FIG. 2, first, the matte layer 12 is formed on the entire surface of the transfer region on the base sheet 11. As a method for forming the matte layer 12, a known thin film manufacturing technique can be adopted as long as sufficient adhesion between the base sheet 11 and the matte layer 12 can be secured. For example, a coating method such as a gravure coating method, a roll coating method, or a comma coating method, a printing method such as a gravure printing method, a screen printing method, or an offset printing method can be employed. In particular, even if the gravure printing is adopted, the matte layer 12 is formed on the entire surface of the transfer region, so that the printing defect such that the ink of the matte layer 12 adheres to an unnecessary place does not occur. The surface of the matte layer 12 is formed in a mat-like uneven shape by the contained powdery material or resin beads.

  Next, the first hard coat layer 13 is formed on the entire surface of the matte layer 12. As a method for forming the first hard coat layer 13, a known thin film manufacturing technique can be employed as long as the peelability of the uncured first hard coat layer 13 with respect to the matte layer 12 can be sufficiently secured. For example, a coating method such as a gravure coating method, a roll coating method, or a comma coating method, a printing method such as a gravure printing method, a screen printing method, or an offset printing method can be employed.

  Next, the active energy ray shield 23 is disposed on the upper surface of the first hard coat layer 13. The active energy ray shield 23 shields the irradiated active energy ray 24 and prevents the first hard coat layer 13 from being cured. The active energy ray shielding body 23 is composed of a layer formed by a plate body, a sheet body, printing, or the like, and is made of a known material that shields active energy rays to be used. The active energy ray shield 23 is formed with an opening as a portion that is not matted in accordance with a desired design expression.

  Next, referring to (2) of FIG. 2, the opening is irradiated with active energy rays to cure a part of the first hard coat layer 13, and the cured portion 20 corresponding to the opening and the active energy ray shielding. An uncured portion 21 corresponding to the body 23 is formed. Here, the cured portion 20 is in close contact with the matte layer 12. Examples of the active energy ray include ultraviolet rays, electron beams, and γ rays corresponding to the active energy ray curable resin to be used. In particular, ultraviolet rays are preferable because they are easy to handle and high energy can be obtained. Examples of the ultraviolet light source include a metal halide lamp, a high-pressure mercury lamp, an electrodeless lamp, and a xenon lamp.

  Next, the active energy ray shield 23 is removed. Next, with reference to (3) of FIG. 2, the 2nd hard-coat layer 14 is formed in the whole surface of the 1st hard-coat layer 13 comprised by the hardening part 20 and the unhardened part 21. FIG. The second hard coat layer 14 is formed by the same method as the first hard coat layer 13 as long as the peelability from the cured portion 20 can be sufficiently secured in an uncured state. If the 1st hard coat layer 13 and the 2nd hard coat layer 14 are comprised from the same resin, the adhesiveness of the unhardened part 21 and the 2nd hard coat layer 14 of the 1st hard coat layer 13 will improve. If the adhesion is improved, the uncured portion 21 and the hard coat layer 14 are integrated after the transfer to protect the surface of the transfer product 30, and the scratch resistance of the surface can be improved.

  Next, returning to (1) of FIG. 1, the design layer 15 is formed on the second hard coat layer 14. As a method of forming the design layer 15, as a method of forming the design layer 15, a well-known thin film manufacturing technique may be used as long as sufficient adhesion between the second hard coat layer 14 and the design layer 14 can be secured. Can be adopted. For example, a printing method such as a gravure printing method, a screen printing method, an offset printing method, or a flexographic printing method can be employed. In particular, in order to perform multicolor printing and gradation expression, a gravure coating method, a roll coating method, a comma coating method, or the like can be adopted as long as the gravure printing method or the offset printing method is suitable. .

  Next, the adhesive layer 16 is formed on the design layer 15. As a method for forming the adhesive layer 16, a known thin film manufacturing technique can be adopted as long as sufficient adhesion between the adhesive layer 16 and the design layer 15 can be secured. For example, a coating method such as a gravure coating method, a roll coating method, or a comma coating method, a printing method such as a gravure printing method, a screen printing method, or an offset printing method can be employed. In this way, the transfer sheet 10 in which a part of the transfer region can be matted is manufactured.

  In the transfer sheet 10, the matte layer 12 is formed on the entire transfer region, and the first hard coat layer 13 forms a mat-like portion 22 and a non-matt-like portion. Therefore, it is not necessary to partially print the mat layer 12 in accordance with a desired design, the entire surface can be printed, and the mat layer is printed even on unnecessary portions in the transfer region. Printing defects in the eraser layer can be eliminated. Furthermore, since the matte layer 12 is not partially printed according to the desired design after the transfer, the productivity of the transfer sheet 10 in which a part of the transfer region is matted can be improved.

  Next, the transfer product 30 manufactured using the transfer sheet 10 will be described.

  Referring to (2) of FIG. 1, the transfer product 30 includes a molded body 17 and a transfer layer 24 that is transferred from the transfer sheet 10 and fixed to the surface of the molded body 17. The transfer layer 24 includes an uncured portion 22 of the first hard coat layer 13, a second hard coat layer 14, a design layer 15, and an adhesive layer 16. In other words, the transfer product 30 includes the molded body 17 and the transfer sheet 10 fixed to the surface of the molded body 17, and the transfer sheet 10 has a molded body on the surface on which the second hard coat layer 14 is formed. The hardened portion 20 of the base sheet 11, the matte layer 12, and the first hard coat layer 13 is peeled off. The surface of the uncured portion 22 constitutes the mat portion 22. After the substrate sheet 11 is peeled off, the transfer product 30 is irradiated with active energy rays corresponding to those constituent materials to the uncured portion 21 and the second hard coat layer 14, so that the uncured portion 21 and the second hard coat layer are irradiated. Layer 14 is cured to the desired hardness.

  The mat-like portion 22 is partially formed on a part of the surface of the transfer product 30, that is, a part of the transfer region. The mat portion 22 is formed by copying the uneven shape of the surface of the mat layer 12 onto the first hard coat layer 21, and the mat layer 12 is formed on the entire surface of the transfer region. 12 does not form the mat-like portion 22 and the non-matt-like portion. In the transfer sheet 10, a mat-like portion and a non-matt-like portion are formed on the surface of the transfer product 30 by the first hard coat layer 13. The cured portion 20 of the first hard coat layer 13 is peeled off from the transfer product 30, but the transfer product 30 is entirely covered with the second hard coat layer 14, and scratch resistance is ensured. The thickness of the second hard coat 14 is not scraped away to form a mat after transfer, and the surface of the second hard coat layer 14 is smooth. Therefore, it is easy to ensure desired scratch resistance according to the use of the transfer product 30, and the scratch resistance can be stabilized. The transfer product 30 manufactured using the transfer sheet 10 has a surface partially formed in a mat shape, and the uncured portion 22 and the second hard coat layer 14 of the first hard coat layer 13 that has been crosslinked and cured, It has a predetermined scratch resistance.

  The constituent material of the molded body 17 is not particularly limited, and examples include a resin molded body, a rubber molded body, a metal molded body, a wood molded body, a glass molded body, a ceramic molded body, or a composite molded body made of these. Can do. The transfer object 17 may be transparent, translucent, or opaque, and may or may not be colored.

  Examples of the synthetic resin that is a constituent material in the case of a resin molded body include general-purpose resins such as polystyrene resin, polyolefin resin, ABS resin, AS resin, and AN resin. Also, general-purpose 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.

  Next, a method for manufacturing the transfer product 30 using the transfer sheet 10 will be described.

The transfer product 30 can be manufactured by a transfer method. The method of manufacturing the transfer product 30 using the transfer sheet 10 includes the step of placing the transfer sheet 10 on the surface of the molded body 17 so that the transfer layer 24 side is in contact with the transfer layer 10 by thermocompression bonding from above. A step of fixing the side to the molded body 17, a process of peeling the base sheet 11, the matte layer 12 and the cured portion 20 from the molded body 17 by peeling the base sheet 11, and irradiating active energy rays. And a step of curing the uncured portion 21 and the second hard coat layer 14. For the thermocompression bonding, for example, a transfer machine provided with a heat roll made of silicon rubber is used. The transfer sheet 10 is pressed from above under conditions of a temperature of 80 to 260 ° C. and a pressure of about 50 to 200 kg / m ² .

  If the molded body is a resin molded body, it can be produced by the simultaneous molding and transfer method described below. The method of manufacturing the transfer product 30 using the transfer sheet 10 includes a step of placing the transfer sheet 10 in an injection mold, a mold clamping of the injection mold, and injecting a molten resin into the cavity to maintain it. At the same time as forming the resin part by pressing, the step of fixing the side of the transfer sheet 10 on which the transfer layer 24 is formed to the resin part and molding the molded body, the process of cooling and solidifying the molded body, and the mold opening simultaneously Alternatively, after the mold is opened, the base sheet 10 is peeled off, and then the base sheet 10, the mat layer 12 and the cured portion 20 are peeled off from the cooled and solidified molded body, and the active energy ray is irradiated. And a step of curing the uncured portion and the second hard coat layer.

  In the above-described embodiment, the active energy ray shield is used to shield the active energy ray to form a hardened portion, but the active energy ray shield is not used. A hardened portion may be formed by partially irradiating a desired position with a laser beam such as a semiconductor laser or an Ar laser.

  In the above embodiment, the design layer and the adhesive layer are formed on the transfer sheet. However, if the matte layer, the first hard coat layer and the second hard coat layer are formed, the design layer is not necessarily provided. And the adhesive layer does not need to be formed.

  A biaxially stretched polyethylene terephthalate film having a thickness of 38 μm was used as a base sheet. An amino alkyd resin containing silica particles was printed on the entire surface of one surface of the base sheet by a gravure printing method so as to have a thickness of 1 μm, and a matte layer was formed through a dry hood at 100 ° C.

  A urethane acrylate resin was coated on the entire surface of the formed matte layer by a gravure coating method so as to have a thickness of 3 μm, and a first hard coat layer was formed through a dry hood at 150 ° C. An ultraviolet shielding plate having an opening at a desired position was arranged on the upper surface of the formed first hard coat layer so as to cover the entire surface of the transfer region. Ultraviolet rays were irradiated from above the ultraviolet shielding plate using a high-pressure mercury lamp, and the hardened portion was formed by crosslinking and curing the first hard coat layer in the opening. The ultraviolet shielding plate was removed, and a second hard coat layer was formed on the upper surface of the first hard coat layer composed of a cured portion and a non-cured portion by the same material and method as the first hard coat layer.

  A mixture of an acrylic resin and a vinyl resin containing a colorant is printed on the upper surface of the formed second hard coat layer by a gravure printing method so as to have a thickness of 2 μm, and the pattern is passed through a dry hood at 80 ° C. A layer was formed. A vinyl chloride vinyl acetate copolymer resin is printed by gravure printing so as to cover the entire surface of the transfer area on the formed pattern layer, and an adhesive layer is formed through a drying hood at 80 ° C. did. In this way, a transfer sheet was obtained in which a part of the transfer region could be matted.

  The transfer sheet of the present invention can be used for decorating a casing of a mobile phone, a personal computer or the like, or an automobile part.

DESCRIPTION OF SYMBOLS 10 Transfer sheet 11 Base sheet 12 Matte layer 13 1st hard coat layer 14 2nd hard coat layer 20 Curing part 21 Uncured part

Claims (4)

There is a transfer sheet in which a part of the transfer area can be matted,
A base sheet;
A mat-like matte layer formed on one surface of the base sheet and an upper surface of the matte layer, made of an active energy ray-curable resin, and the matte layer in an uncured state. A first hard coat layer having releasability with respect to,
An uncured second hard coat layer made of an active energy ray curable resin, formed on the first hard coat layer,
The first hard coat layer is a transfer sheet including a cured portion irradiated with active energy rays and cured, and an uncured portion maintained in an uncured state.   The transfer sheet according to claim 1, wherein the first hard coat layer and the second hard coat layer are made of the same resin. A method for producing a transfer sheet in which a part of the transfer region can be matted,
Forming a matte matte surface on the substrate sheet;
Forming a first hard coat layer made of an active energy ray-curable resin on the upper surface of the matte layer and having peelability from the matte layer in an uncured state;
A step of irradiating a portion of the first hard coat layer with an active energy ray to cure and forming a cured portion; and an active energy ray curable resin on the first hard coat layer, in an uncured state And a step of forming a second hard coat layer having releasability with respect to the cured portion. A molded body,
The transfer sheet according to claim 1 or 2 fixed to the surface of the molded body,
The transfer product, wherein the transfer sheet is fixed to the surface of the molded body on the surface on which the second hard coat layer is formed, and the base sheet, the matte layer, and the cured portion are peeled off.

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