JPWO2009133697A1 - Partial matte hard coat transfer sheet and method for producing the same - Google Patents

Abstract

Disclosed is a method for producing a partial mat hard coat transfer sheet in which the hard mat layer is thickened and the partial mat layer can be easily removed after transfer, and deterioration in positional accuracy between the partial mat layer and the optical marker is suppressed. A partial mat layer 3 and an optical marker 2 are simultaneously formed on the base sheet 1 by a printing method using a colored mat ink having a color obtained by mixing a mat material with a curable resin as a vehicle. Next, the hard coat layer 4 is formed on the entire surface of the base sheet by a liquid coating method.

Description

  The present invention relates to a transfer sheet used for decorating a molded product produced by a simultaneous molding transfer method, and particularly to a partial mat hard coat transfer sheet that gives a matt feeling to a part of the molded product.

  A partial mat hard coat transfer sheet is known as a transfer sheet used for obtaining a decorative molded product having high surface strength of a molded product and giving a matte feeling to a part of the surface. The partial mat hard coat transfer sheet is a sheet in which a partial mat layer is formed on a base sheet and a hard coat layer is formed thereon, and the hard mat that is transferred to the surface of the resin molded product upon transfer to a molded product. A fine uneven shape of the mat layer is copied onto the coat layer.

  Conventionally, a partial mat hard coat transfer sheet using a water-soluble resin containing a mat material is known as a partial mat layer (see, for example, Patent Document 1).

  On the other hand, from the viewpoint of design, it is required that the pattern shape of each layer of the partial mat hard coat transfer sheet and the shape of the decorative molded product are perfectly synchronized. Therefore, in the conventional partial mat hard coat transfer sheet, an optical marker is formed by printing on a margin portion on the hard coat layer. And the said optical marker is read with the shaping | molding apparatus which has a metal mold | die, The shape of the resin molded product produced in a metal mold | die and the partial mat layer position on a partial mat | matte hard-coat transfer sheet are synchronized.

  FIG. 7 is a cross-sectional view showing a layer structure and an optical marker of a conventional partial mat hard coat transfer sheet. A partial mat layer 3 is formed on the base sheet 1. A hard coat layer 4 is formed on the entire surface of the base sheet 1 including the partial mat layer 3. The optical marker 2 is formed on the hard coat layer 4. A design layer 9 and an adhesive layer 5 are formed on the hard coat layer 4.

JP 2001-260596 A

  The partial mat hard coat transfer sheet using the water-soluble resin containing the mat material described above is capable of in-line printing in which a partial mat layer, a hard coat layer, and, if necessary, a pattern layer are printed by a series of printing apparatuses. This has the advantage that the manufacturing process is simplified.

  However, since the hard coat layer is formed by printing, the thickness of the hard coat layer is limited. For this reason, the decorative molded product after transfer of the transfer sheet has a hard coat layer on the surface limited to a certain thickness, and the thickness of the hard coat layer cannot be increased to increase the strength of the hard coat layer. In addition, since the inline printing apparatus includes a drying apparatus, it is not possible to further advance the drying of the hard coat layer that is formed thick by extending the drying apparatus passage time. Furthermore, after the transfer, it is necessary to wash with water to remove the partial mat layer, which makes it difficult to produce a molded simultaneous transfer product.

  Accordingly, an object of the present invention is to obtain a partial mat hard coat transfer sheet in which the hard coat layer is thickened and the partial mat layer can be easily removed after transfer.

  In order to solve these problems, the material of the partial mat layer is changed, and after the step of forming the partial mat layer by the printing method, the step of taking out the base sheet with the partial mat layer from the printing machine and the application of the hard coat layer And a step of heating and drying the hard coat layer. In particular, due to the heat drying step, the base sheet shrinks. At the same time, other parts of the base sheet expand. That is, a contraction part and an expansion part occur irregularly in a single base sheet. These steps cause a new problem that it becomes difficult to maintain the positional accuracy of the partial mat layer and the optical marker formed by printing after the partial mat layer is formed.

  Therefore, an object of the present invention is to suppress a deterioration in position accuracy of a newly generated partial mat layer and an optical marker in addition to the above problems.

In order to solve the above problems, a method for producing a partial mat hard coat transfer sheet for simultaneous molding transfer according to one aspect of the present invention is as follows.
On the base sheet,
Forming a partial mat layer and an optical marker by a printing method using the same plate at the same time, using a colored mat ink having a color obtained by mixing a mat material with a curable resin as a vehicle;
Next, the method includes a step of forming a hard coat layer on the entire surface of one surface of the base sheet including the partial mat layer and the optical marker by a liquid coating method.

  In the present invention, the color of the colored mat ink includes both chromatic and achromatic colors.

  In a preferred embodiment of the present invention, the colored mat ink in the method for producing a partial mat hard coat transfer sheet for simultaneous molding transfer may contain a colored mat material. According to this preferred embodiment, the method for producing a partial mat hard coat transfer sheet for simultaneous molding transfer according to the present invention can use various colored inks.

  In another preferred embodiment of the present invention, the colored mat ink in the method for producing a partial mat hard coat transfer sheet for simultaneous molding transfer may contain a colorant comprising a pigment and / or a dye. . According to this preferred embodiment, the method for producing a partial mat hard coat transfer sheet for simultaneous molding transfer according to the present invention can use a wider variety of colored inks.

  In another preferred embodiment of the present invention, the hard coat layer in the method for producing a partial mat hard coat transfer sheet for simultaneous molding is made of a thermosetting and active energy ray curable resin. May be. According to this preferred embodiment, the method for producing a partial mat hard coat transfer sheet for simultaneous molding and transfer according to the present invention can use a wider variety of hard coat layers.

  In still another preferred embodiment of the present invention, in the method for producing a partial mat hard coat transfer sheet for simultaneous molding, a pattern layer is formed on the entire surface or part of the hard coat layer by a printing method. A process may be included. According to this preferred embodiment, the method for producing a partial mat hard coat transfer sheet for simultaneous molding transfer according to the present invention produces a variety of partial mat hard coat transfer sheets for simultaneous molding transfer including a pattern layer. Become a method.

  In still another preferred embodiment of the present invention, the method for producing the partial mat hard coat transfer sheet for simultaneous molding uses a thermosetting and active energy ray curable resin as the hard coat layer, Including a step of heating the hard coat layer to bring the hard code coat layer into a semi-cured state, and a step of forming a pattern layer on the entire surface or part of the hard coat layer in the semi-cured state by a printing method It may be. According to this preferred embodiment, the method for producing a partial mat hard coat transfer sheet for simultaneous molding transfer according to the present invention produces a variety of partial mat hard coat transfer sheets for simultaneous molding transfer including a pattern layer. Become a method.

Partial matte hard coat transfer sheet for simultaneous molding transfer according to another embodiment of the present invention,
On the base sheet,
A partial mat layer is formed in contact with the surface of the base sheet, and an optical marker is formed in contact with the surface of the base sheet. The partial mat layer and the optical marker are mixed with a mat material using a thermosetting resin as a vehicle. It is formed by a printing method using a colored mat ink having a color,
A hard coat layer having a thickness of 2 μm or more and 40 μm or less is formed on the entire surface of the base sheet including the partial mat layer and the optical marker.

  In another preferred embodiment of the present invention, the partial mat hard coat transfer sheet for simultaneous molding and transfer may have a pattern layer formed on the entire surface or part of the hard coat layer. According to this preferred embodiment, not only the matte region formed on the hard coat layer but also the pattern layer is a partially matted hard coat transfer sheet whose position is synchronized.

  In another preferred embodiment of the present invention, a thermosetting and active energy ray-curable resin is used as the hard coat layer, and the hard code coat layer is heated to a semi-cured state by heating the hard coat layer. There may be. According to the present preferred embodiment, the partial mat hard coat transfer sheet for simultaneous molding and transfer according to the present invention is a variety of partial mat hard coat transfer sheets for simultaneous molding and transfer.

  In still another preferred embodiment of the present invention, a thermosetting and active energy ray-curable resin is used as the hard coat layer, the hard coat layer is heated to make the hard code coat layer semi-cured, and A pattern layer may be further formed on the entire surface or part of the hard coat layer. According to this preferred embodiment, not only the matte region formed on the hard coat layer but also the pattern layer is a partially matted hard coat transfer sheet whose position is synchronized.

  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.

  The method for producing a partial mat hard coat transfer sheet for simultaneous molding transfer according to one aspect of the present invention uses a colored mat ink containing a curable resin as a vehicle together with other steps, and simultaneously uses the partial mat layer and the optical marker. It includes a step of forming by the printing method using the same plate and a step of forming a hard coat layer by the liquid coating method. For this reason, the hard coat layer can be thickened. Further, at the same time when the base sheet is peeled off from the molded product after the transfer, the partial mat layer is attached to the base sheet and peeled off. Furthermore, the positional relationship between the partial mat layer and the optical marker is maintained with sufficient practical accuracy, and a decorative molded product in which the transfer layer such as the partial mat layer is synchronized with the shape of the molded product can be manufactured.

  The partial mat hard coat transfer sheet for simultaneous molding transfer according to another aspect of the present invention uses a colored mat ink containing a curable resin as a vehicle together with other components, and a partial mat layer and an optical marker by a printing method. And a hard coat layer having a constant thickness is formed thereon. For this reason, the partial mat layer adheres to the base sheet and is peeled off at the same time as the base sheet is peeled from the molded product after the transfer. In addition, the positional relationship between the partial mat layer and the optical marker can be maintained with sufficient practical accuracy, and a decorative molded product in which the transfer layer such as the partial mat layer is synchronized with the shape of the molded product can be created.

FIG. 1 is a diagram for explaining a manufacturing process of a partial mat hard coat transfer sheet. FIG. 2 is a diagram for explaining an optional addition step in the manufacturing process of the partial mat hard coat transfer sheet. FIG. 3 is a plan view of the partial mat hard coat transfer sheet 100. FIG. 4 is a front view showing a sheet feeding mechanism of a simultaneous molding and transfer apparatus using a partial mat hard coat transfer sheet. It is a figure explaining the manufacturing process of the shaping | molding simultaneous molded article which uses the partial mat | matte hard-coat transfer sheet 100. FIG. FIG. 6 is a schematic cross-sectional view of a partial mat layer formed using a colored mat ink. It is sectional drawing explaining the conventional partial mat | matte hard-coat transfer sheet.

  Hereinafter, a method for producing a partial mat hard coat transfer sheet for simultaneous molding transfer and a partial mat hard coat transfer sheet for simultaneous molding transfer according to an 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.

  FIG. 1 is a diagram for explaining a manufacturing process of a partial mat hard coat transfer sheet. The manufacturing method of a partial mat | matte hard-coat transfer sheet advances in order of Fig.1 (a), (b), (c). In the figure, 1 is a base sheet, 2 is an optical marker, 3 is a partial mat layer, and 4 is a hard coat layer. In addition, the same code | symbol is attached | subjected about the same component in each figure after FIG.

  FIG. 2 is a view for explaining an optional addition step in the production of the partial mat hard coat transfer sheet, and for explaining the formation of the design layer.

  1 and 2 are sectional views showing a sheet that is an intermediate product and a finished product sheet in the process of producing a partial mat hard coat transfer sheet.

  As shown in FIG. 1A, the production of the partial mat hard coat transfer sheet starts from the preparation of the base sheet 1. Usually, the base sheet 1 is a belt-like sheet. One surface of the base sheet has peelability. The surface having the peelability is a surface on which a partial mat layer or a hard coat layer is formed.

  The material of the base sheet 1 includes polypropylene resin, polyethylene resin, polyamide resin, polyester resin, acrylic resin, polyvinyl chloride resin resin sheet, aluminum foil, copper foil and other metal foil, glassine paper Cellulose-based sheets such as coated paper and cellophane, or composites of the above respective sheets can be used. In order to improve the peelability of the base sheet 1, a release layer may be provided on the surface of the base sheet 1. As the material of the release layer, melamine resin, silicone resin, fluorine resin, cellulose derivative, urea resin, polyolefin resin, paraffin resin, and composites thereof can be used. Examples of the method for forming the release layer include coating methods such as a roll coating method and a spray coating method, and printing methods such as a gravure printing method and a screen printing method.

  Next, as shown in FIG. 1B, the partial mat layer 3 and the optical marker 2 are formed on one surface of the base sheet 1. The partial mat layer 3 and the optical marker 2 are formed in contact with the surface of the base sheet 1. When the release layer is formed on the surface of the base sheet, the partial mat layer 3 and the optical marker 2 are formed in contact with the release layer.

  Colored matte ink is used as the material constituting the partial mat layer 3 and the optical marker 2. The colored mat ink is an ink in which a curable resin is used as a vehicle and a mat material is mixed. The curable resin means a resin that is cured by heating or irradiation with active energy rays. The curable resin includes a thermosetting resin and an active energy ray curable resin. The thermosetting resin is an epoxy resin, a melamine resin, or a copolymer resin or a mixture thereof. The active energy ray curable resin is the same resin as the active energy ray curable resin which is a material of the hard coat layer described later.

  The mat material is an inorganic pigment containing silicon oxide, titanium oxide, carbon black, precipitated barium, calcium carbonate, calcium oxide, talc, or the like, or an organic pigment such as phthalocyanine, dioxazine, or anthraquinone. The average particle size of the mat material is 1 μm to 5 μm. The amount and particle size of the mat material to be mixed with the colored mat ink are adjusted according to the matte feeling intended to be expressed as irregularities on the hard coat layer. Then, when the partial mat layer 3 is formed, the gloss value of the surface is less than 175. When the gloss value is 175 or more, it looks glossy and does not have a matte feeling.

  Examples of the colorant contained in the color ink include pigments and dyes. Examples of pigments include plant dyes such as indico, alizarin, carsamine, anthocyanins, flavonoids and shikonin, food dyes such as azo, xanthene and triphenylmethane, natural inorganic pigments such as ocher and green earth, calcium carbonate, titanium oxide, and aluminum lake. , Madder Lake, Cochineal Lake and the like are preferable. The pigment as the colorant has an average particle size of about 10 nm to 500 nm.

Colored matte ink
(1) colorless matte material, a mixture of vehicle and pigment and / or dye,
(2) A mixture of colored matting material and vehicle,
(3) colored mat materials, mixtures of vehicles and pigments and / or dyes,
There are cases. Examples of the colored mat material include carbon black and colored resin beads.

  Colored matte ink is also used for forming optical markers. The optical marker is preferably black from the viewpoint of being reliably detected regardless of the type of light source of the photoelectric rod. Therefore, the color of the colored mat ink is preferably black.

  After the transfer, the partial mat layer 3 is peeled off from the molded product together with the base sheet 1 to copy the mat shape of the partial mat layer 3, that is, a fine uneven shape onto a part of the hard coat layer 4. The partial mat hard coat transfer sheet according to the present invention is easily peeled between the hard coat layer and the partial mat layer after transfer, and the partial mat layer is separated from the molded product together with the base sheet 1. This is because a colored ink having a curable resin as a vehicle is used for forming the partial mat layer. The second reason is that after the partial mat layer 3 is formed by printing, a hard coat layer is formed thereon by a liquid coating method, so that the substrate sheet with the partial mat layer in the manufacturing process is inevitably removed from the printing machine. This is because it is sufficiently heated and dried and the partial mat layer is cured.

  The optical marker 2 is separated from the partial mat layer 3 and is formed on the surface of the base sheet, which is a margin part of the base sheet.

  The optical marker 2 and the partial mat layer 3 are continuously printed on the same printing line. More preferably, the optical marker 2 and the partial mat layer 3 are printed simultaneously using the same plate. Since the same colored ink is used for the optical marker 2 and the partial mat layer 3, simultaneous printing using the same plate can be easily performed.

  Since the optical marker 2 and the partial mat layer 3 are printed on the base sheet in succession (more preferably at the same time) using the same printing line, the registration of the optical marker 2 and the partial mat layer 3 (that is, mutual) The distance and the mutual positional relationship) are formed with high accuracy.

  The base sheet with the partial mat layer 3 shown in FIG. 1B is usually wound into a roll and removed from the printing press. Then, the roll is rewound and sequentially sent to a heating device such as a heating furnace, dried, and wound up again in a roll shape. Even if the base sheet 1 contracts and expands in the heat treatment step, the positional relationship between the optical marker 2 and the partial mat layer 3 is maintained with sufficient positional relationship accuracy. As a result, when positioning the partial mat hard coat transfer sheet 100 and the mold in the simultaneous molding transfer, the partial mat layer 3 can be disposed at a predetermined position with respect to the molding mold via the optical marker 2. . For this reason, when a resin molded product is created using the partial mat hard coat transfer sheet 100 according to the present invention, a decorative molded product in which the portion where the partial mat layer 3 is formed and the shape of the molded product is completely synchronized is created. can do.

  Printing methods for forming the optical marker 2 and the partial mat layer 3 include a gravure printing method, a screen printing method, an offset printing method, and the like.

  The thickness of the partial mat layer 3 is usually 0.5 μm to 30 μm, more preferably 0.5 μm to 5 μm. Within this range, even if the base sheet 1 is stretched during simultaneous molding and transfer to a two-dimensional or three-dimensional shape, it is possible to prevent the partial mat layer 3 from being sheared, and to follow the stretch of the base sheet 1. This is because it is possible to prevent the partial mat layer 3 itself from being cracked.

  FIG. 6 is a schematic cross-sectional view of a partial mat layer formed using a colored mat ink. The partial mat layer 3 is considered to be fixed to the surface of the base sheet 1 by a thin layer vehicle 33 surrounding the surface of the mat material particles 32. The thickness d of the partial mat layer 3 described above is represented by the length from the surface in contact with the base sheet to the portion at the longest distance. Although FIG. 6 illustrates the case where the mat material particles are arranged in a single layer on the surface of the base sheet, the mat material particles may be arranged in two layers or three layers.

  Subsequently, as shown in FIG. 1C, the hard coat layer 4 is formed on the entire surface of the base sheet 1 or the partial mat layer 3 and the optical marker 2. The hard coat layer 4 has a certain level of hardness, and is a layer that peels from the base sheet 1 and becomes the uppermost layer of the transfer layer when the base sheet 1 is peeled after transfer.

  The hard coat layer 4 is made of an active energy ray-curable resin that is cured by ultraviolet rays, electron beams, or the like typified by a photocurable resin such as an ultraviolet curable resin or a radiation curable resin such as an electron beam curable resin. The hard coat layer 4 may be a thermosetting and active energy ray curable resin. The active energy ray curable resin is, for example, a urethane acrylate resin or a cyanoacrylate resin. The thermosetting and active energy ray-curable resin is, for example, a resin obtained by adding an additive such as isocyanate to a urethane acrylate resin or a cyanoacrylate resin. When the thermosetting and active energy ray-curable resin is heated, some of the monomers and oligomers in the resin are cross-linked and become a semi-cured state. The semi-cured hard coat layer is cured when further irradiated with active energy rays such as ultraviolet rays.

  In the present invention, it is essential for the hard coat layer 4 to pass through the optical marker 2 formed on the lower surface thereof. The active energy ray curable resin and the thermosetting and active energy ray curable resin described above are transparent or translucent, and pass through the optical marker 2.

  The hard coat layer 4 is formed by a liquid coating method. Examples of the liquid coating method include a gravure coating method, a roll coating method, a comma coating method, and a lip coating method. The thickness of the hard coat layer 4 is usually 2 μm or more and 40 μm or less, and more preferably 2 μm or more and 10 μm or less. When the thickness is within the above range, the surface of the resin molded product obtained by using the partial mat hard coat transfer sheet 100 prepared by the production method of the present invention has an excellent surface hardness since the thick hard coat layer is transferred. It can be.

  When a thermosetting and active energy ray-curable resin is selected as the hard coat layer 4, the hard coat layer is formed and then heated to a semi-cured state. According to the present invention, since the positional accuracy of the partial mat layer and the optical marker is maintained even if the base sheet shrinks or expands due to heating, the semi-curing is performed without being bound by the subsequent manufacturing process. Optimal heating conditions for achieving the state can be set. That is, heating at a high temperature for a long time may be performed. For this reason, this invention is much more suitable as the manufacturing method of the partial mat | matte hard-coat transfer sheet which uses thermosetting and active energy ray-curable resin as the hard-coat layer 4, and the said transfer sheet.

  Next, the formation of the pattern layer 9 as an optional additional configuration of the partial mat hard coat transfer sheet according to the present invention will be described.

  Referring to FIG. 2, pattern layer 9 is formed on the entire surface or a part of surface on hard coat layer 4. The design layer 9 is formed on the center side of the base sheet 1 with respect to the optical marker 2. The design layer 9 is made of a suitable resin such as polyvinyl resin, polyamide resin, polyacrylic resin, polyurethane resin, polyvinyl acetal resin, polyester urethane resin, cellulose ester resin, alkyd resin, and the like. Colored inks containing color pigments or dyes as colorants may be used. In the case of forming a metal color, a pearl pigment in which titanium oxide is coated on metal particles such as aluminum, titanium, bronze, or mica can be used.

  As a method for forming the pattern layer 9, a normal printing method such as an offset printing method, a gravure printing method, or a screen printing method may be used.

  The pattern layer 9 may be made of a metal thin film or a combination of a printed film and a metal thin film. The metal thin film is formed by a vacuum deposition method, a sputtering method, an ion plating method, a plating method, or the like. Metals such as aluminum, nickel, gold, platinum, chromium, iron, copper, tin, indium, silver, titanium, lead, and zinc, and alloys or compounds thereof are used depending on the metallic luster color to be expressed.

  The adhesive layer 5 may be formed on the design layer 9 as necessary. The adhesive layer 5 adheres each of the above layers to the surface to be decorated. As the adhesive layer 5, a heat-sensitive or pressure-sensitive resin suitable for the material to be decorated is used as appropriate. Examples of the method for forming the adhesive layer 5 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.

  Moreover, you may form the anchor layer which improves the interlayer adhesiveness of each layer between the design layer 9 and the hard-coat layer 4, and between the design layer 9 and the contact bonding layer 5, as needed.

  FIG. 3 is a plan view of the partial mat hard coat transfer sheet 100. The partial mat hard coat transfer sheet 100 is a belt-like sheet, and individual transfer regions 51 are repeatedly formed in the longitudinal direction thereof. The individual transfer area 51 is a unit of an area transferred to a single molded product.

  The optical marker 2 includes a width-direction optical marker 20 formed linearly in the longitudinal direction of the belt-like sheet and a longitudinal optical marker 21 formed at regular intervals in the longitudinal direction of the belt-like sheet. The width direction optical marker 20 and the length direction optical marker 21 are formed outside the margin area, that is, the individual transfer area 51.

  An example of a method for positioning the partial mat hard coat transfer sheet 100 will be described with reference to FIG. The partial mat hard coat transfer sheet 100 is unwound from the unwinding roll 71, passes through the opening surface 61 of the mold, and is wound on the winding roll 72. The width direction positioning sensor 10 and the longitudinal direction positioning sensor 11 are photoelectric rods. The width direction positioning sensor 10 is disposed above and / or below the opening surface 61 of the mold, and the width direction optical marker 20 of the partial mat hard coat transfer sheet 100 on the unwinding roll 71 side and / or the winding roll 72 side. Is detected. The partial mat hard coat transfer sheet 100 is adjusted to the correct position in accordance with the detection signal of the width direction positioning sensor 10.

  Further, the longitudinal positioning sensor 11 is disposed on the side of the unwinding roll 71 of the mold opening surface 61 to detect the position of the longitudinal optical marker 21 of the partial mat hard coat transfer sheet 100. The unwinding amount of the partial mat hard coat transfer sheet 100 is adjusted according to the detection signal of the longitudinal positioning sensor 11.

  A manufacturing process of a simultaneous molding product using the partial mat hard coat transfer sheet 100 will be described. The manufacturing process proceeds in the order of FIGS. 5A to 5B, c, d, and e.

  As shown in FIG. 5A, the A mold 6 and the B mold 7 are opened, and the partial mat hard coat transfer sheet 100 is fed between them. At this time, the partial mat hard coat transfer sheet 100 stops at a desired relative position due to the functions of the optical marker 2, the width direction, and the longitudinal direction positioning sensor.

  With reference to FIG. 5B, the A mold 6 and the B mold 7 are clamped, and the molten resin 81 is injected into the cavity. The adhesive layer 5 and the hard coat layer 4 are transferred to the molten resin 81 side by pressure heat resulting from the injection of the molten resin 81.

  Thereafter, when cooled or allowed to cool naturally, the molten resin 81 is solidified to become the solidified resin 8, and an intermediate molded product 115 shown in FIG. 5C is produced.

Next, refer to FIG. The base sheet 1 is removed from the intermediate molded product 115. At this time, the partial mat layer 3 is also removed while adhering to the base sheet 1. Next, the hard coat layer 4 is crosslinked and cured by irradiation with active energy rays. As the active energy rays, ultraviolet rays or the like are used, and irradiation is preferably performed under conditions of about 400 to 4000 mJ / cm ² .

  In this way, a hard coat resin molded product 110 shown in FIG. 5 (e) is obtained. A partial area of the hard coat layer 41 transferred to the surface and cured is a matte area 31.

  The partial mat hard coat transfer sheet according to the present invention may be a single sheet transfer sheet.

(Example-1)
A melamine resin is applied to the entire surface of 1 μm on a PET film, and a partial mat layer is formed with a melamine resin containing silica having an average particle diameter of 3 μm and carbon black having an average particle diameter of 100 nm as a colorant using a gravure printing method. And an optical marker having a thickness of 4 μm, followed by heat treatment at 200 ° C. for 2 minutes. Thereafter, 10 μm of a thermosetting and ultraviolet curable resin was applied onto the fully cured partial mat layer and the optical marker by using a gravure coating method, and heated at 150 ° C. for 1 minute to be semi-cured. Thereafter, a belt-like pattern was formed with a black pigment on a thermosetting and ultraviolet curable resin, and finally an adhesive layer was formed to obtain a partial mat hard coat transfer sheet.

  Using this partial mat hard coat transfer sheet, transfer onto the surface of the molded product using the simultaneous molding transfer method, peel off the base sheet, and then irradiate the intermediate molded product with ultraviolet rays to add a partial mat having a three-dimensional shape. A decorative molded product was obtained. The obtained molded product had good steel wool scratch properties, and the shape of the molded product and the matte pattern were synchronized.

(Comparative Example-1)
After a melamine resin is applied to the entire surface of 1 μm on the PET film and a partial mat layer is formed with a thickness of 4 μm by using a printing method, a partial mat layer is formed with a melamine resin containing only silica having an average particle diameter of 3 μm. Heat treatment was performed at 200 ° C. for 2 minutes. Thereafter, 10 μm of a thermosetting and ultraviolet curable resin was applied on the fully cured partial mat layer using a gravure coating method, and semi-cured by heating at 150 ° C. for 1 minute. Thereafter, a belt-like pattern layer and an optical marker were formed with a black pigment on a thermosetting and ultraviolet curable resin, and finally an adhesive layer was formed to obtain a partial mat hard coat transfer sheet.

  Using this partial mat hard coat transfer sheet, transfer onto the surface of the molded product using the simultaneous molding transfer method, peel off the base sheet, and then irradiate the intermediate molded product with ultraviolet rays to add a partial mat having a three-dimensional shape. A decorative molded product was obtained. The obtained molded product had good steel wool scratch properties, and the shape of the molded product and the matte pattern were shifted.

(Comparative Example-2)
A melamine resin is applied to the entire surface of 1 μm on a PET film, and a partial mat layer is formed of melamine resin containing silica having an average particle diameter of 3 μm and carbon black having an average particle diameter of 100 nm as a colorant using a printing method. An optical marker was formed to a thickness of 4 μm, and 1 μm of an ultraviolet curable resin was applied thereon by an in-line method, followed by heat drying at 80 ° C. for 10 seconds. Thereafter, a belt-like pattern layer was formed with a black pigment on the cured ultraviolet curable resin, and finally an adhesive layer was formed to obtain a partial mat hard coat transfer sheet.

  Using this partial mat hard coat transfer sheet, transfer to the surface of the molded product using a simultaneous molding transfer method, then peel off the base sheet, and then irradiate the intermediate molded product with ultraviolet rays to form a partial mat having a three-dimensional shape. A decorative molded product was obtained. The obtained molded product had poor steel wool scratching properties, and the shape of the molded product and the mat pattern were synchronized.

  The partial mat hard coat transfer sheet according to the present invention can be suitably used in the fields of communication equipment such as mobile phones, automobile exterior parts, information equipment inside automobiles, and home appliances.

DESCRIPTION OF SYMBOLS 1 Base sheet 2 Optical marker 3 Partial mat layer 4 Hard coat layer 5 Adhesive layer 6 A metal mold 7 B metal mold 8 Solidified resin 9 Design layer 10 Width direction positioning sensor 11 Longitudinal position sensor 20 Width direction optical marker 21 Longitudinal direction optical Marker 31 Matte region 32 Matt material particle 33 Vehicle 41 Hardened hard coat layer 51 Individual transfer region 61 Opening surface 81 of mold Molten resin 100 Partial mat hard coat transfer sheet 110 Hard coat resin molded product 115 Intermediate molded product

Claims (10)

On the base sheet,
Forming a partial mat layer and an optical marker by a printing method using the same plate at the same time, using a colored mat ink having a color obtained by mixing a mat material with a curable resin as a vehicle;
Next, the method includes a step of forming a hard coat layer by a liquid coating method on the entire surface of one surface of the base sheet including the partial mat layer and the optical marker.
A method for producing a partial mat hard coat transfer sheet for simultaneous molding transfer.   2. The method for producing a partial mat hard coat transfer sheet according to claim 1, wherein the colored mat ink contains a colored mat material.   2. The method for producing a partial mat hard coat transfer sheet according to claim 1, wherein the colored mat ink contains a colorant comprising a pigment and / or a dye.   The method for producing a partial mat hard coat transfer sheet according to claim 1, wherein the hard coat layer is made of a thermosetting and active energy ray-curable resin.   The manufacturing method of the partial mat | matte hard-coat transfer sheet for simultaneous shaping | molding transfer of Claim 1 including the process of forming a design layer in the whole surface or part by the printing method on the said hard-coat layer. Heating the hard coat layer to bring the hard code coat layer into a semi-cured state;
The manufacturing method of the partial mat | matte hard-coat transfer sheet for simultaneous shaping | molding transfer of Claim 4 including the process of forming a design layer on the whole surface or part by the printing method on the hard-coat layer made into the semi-hardened state. On the base sheet,
A partial mat layer is formed in contact with the surface of the base sheet, and an optical marker is formed in contact with the surface of the base sheet. The partial mat layer and the optical marker are mixed with a mat material using a curable resin as a vehicle. It is formed by a printing method using a colored mat ink having a color,
A partial mat hard coat transfer sheet for simultaneous molding transfer in which a hard coat layer having a thickness of 2 μm or more and 40 μm or less is formed on the entire surface of the base sheet including the partial mat layer and the optical marker. On the hard coat layer,
Furthermore, the partial mat | matte hard-coat transfer sheet for simultaneous shaping | molding transfer of Claim 7 which formed the pattern layer in the whole surface or the part.   The partial mat hard coat transfer sheet according to claim 7, wherein the hard coat layer is a semi-hardened hard coat layer.   The partial mat hard coat transfer sheet according to claim 8, wherein the hard coat layer is a semi-cured hard coat layer.

Images