JP4951873B2 - Method for producing relief formed body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the manufacturing method of a matte film for forming emboss, in which the design (pattern) and the function (glossiness) of the surface of a photographic printed matter can be easily controlled. <P>SOLUTION: In order to manufacture a relief forming body for manufacturing the matte film for forming emboss, a base and a relief forming material 3 equipped with a relief forming layer 2, which is formed on the base and made of a thermoplastic resin, are used for forming a laser uneven pattern 5 on the relief forming layer 2 by irradiating laser over the relief forming layer 2. The resultant relief forming body and a base material and a raw material film equipped with an emboss forming layer formed on the base material are employed so as to pile up the emboss forming layer and the relief forming layer in order to shape a curable resin. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention relates to a method for producing a relief forming body used for producing a wrinkle forming mat film, and a method for producing a wrinkle forming mat film using the relief forming body.

  As a method for roughening (matting) the surface of a printed material having a resin layer or the like on the surface, the surface of the printed material and a mat film for wrinkle formation are overlaid and irradiated with energy. There is a method of softening the surface of an object and shaping an uneven pattern on the surface. By using such a method, by forming a concavo-convex pattern (also referred to as wrinkles) on the surface of the printed material, the reflected light from the surface can be scattered, and the surface of the printed material has a high-class feeling. Etc. can be issued.

  As a method of forming a cocoon on a raw film used for producing a mat film for forming a cocoon, conventionally, sandblasting (see Patent Document 1) for physically roughing the surface by spraying sand or the like, and chemical treatment are performed. Chemical etching treatment to be applied (see Patent Document 2), a method of coating a smooth film surface with a liquid containing fine particles and roughening, and adding particles (for example, inert particles, inorganic particles) to at least the surface layer of the raw material film A method of forming protrusions on the surface (see Patent Document 3), a method of forming an uneven film by melt-extrusion and extruding a raw material film, and stretching this (see Patent Document 4) Etc. have been used.

  However, the above-described method has a problem that an intended fine wrinkle pattern cannot be easily formed. For example, in the above sandblasting process and the method of forming fine particles on the surface, it is difficult to form by controlling the wrinkle pattern or the like. In addition, it was possible to control and form a wrinkle pattern by using a mask pattern in combination with these methods or by performing an etching process, but the process is complicated and a wrinkle pattern or the like can be easily formed. It was difficult to do.

Japanese Patent Publication No.58-39453 Japanese Patent Publication No. 38-13784 Japanese Patent Publication No.52-4308 Japanese Patent Publication No.51-28360

  The present invention has been made in view of the above circumstances, and provides a method for manufacturing a wrinkle-forming mat film that can easily control the design (pattern) and function (glossiness) of the surface of a printed material. Is the main purpose.

  In the present invention, there is provided a method for producing a relief forming body used for producing a wrinkle-forming mat film, wherein a relief forming material comprising a relief forming layer made of a thermoplastic resin is used and the relief forming layer is used. The method for producing a relief forming body is characterized in that a laser concavo-convex pattern is formed on the relief forming layer by irradiating with laser.

  ADVANTAGE OF THE INVENTION According to this invention, it is a relief forming body used in order to manufacture the mat | matte film for wrinkle formation, Comprising: The relief forming body which has a wrinkle pattern etc. corresponding to digital data can be obtained.

  In the above invention, a relief pattern sheet having a relief pattern corresponding to a fine uneven pattern on the surface is used, and a photothermal conversion layer that generates heat by light irradiation is provided on the relief forming material or the relief pattern sheet, and the laser unevenness Before or after the pattern is formed, in the state where the relief forming material and the relief pattern sheet are in contact with each other so that the relief forming layer and the relief pattern are in contact with each other, by performing light irradiation on the photothermal conversion layer, It is preferable to mold the fine concavo-convex pattern on the relief forming layer. When a mat film for wrinkle formation is produced using the relief forming body having the fine uneven pattern, and the surface of the printed product is roughened using the mat film for wrinkle formation, the gloss of the surface of the print product This is because the degree can be lowered.

  In the present invention, the wrinkle-forming layer is obtained by using a relief-forming body obtained by the method for producing a relief-forming body, and a raw material film provided with a base material and a wrinkle-forming layer formed on the base material. And a relief forming layer, and a reverse image of the concavo-convex pattern of the relief forming layer is formed on the wrinkle forming layer.

  According to the present invention, by using the relief forming body, it is possible to easily obtain a wrinkle forming mat film having a desired pattern such as wrinkles, characters and symbols.

  In the present invention, there is an effect that it is possible to obtain a wrinkle-forming mat film that can easily control the design (pattern) and function (glossiness) of the surface of the printed material.

  Hereafter, the manufacturing method of the relief forming body of this invention and the manufacturing method of the mat | matte film for wrinkle formation are demonstrated in detail.

A. First, the manufacturing method of the relief forming body of this invention is demonstrated. The method for producing a relief-forming body of the present invention is a method for producing a relief-forming body used for producing a mat film for wrinkle formation, comprising a relief-forming material provided with a relief-forming layer made of a thermoplastic resin. The laser relief pattern is formed on the relief forming layer by irradiating the relief forming layer with laser.

  ADVANTAGE OF THE INVENTION According to this invention, it is a relief forming body used in order to manufacture the mat | matte film for wrinkle formation, Comprising: The relief forming body which has a wrinkle pattern etc. corresponding to digital data can be obtained. Furthermore, according to the present invention, since the pattern is formed on the digital data by irradiating a laser corresponding to the digital data, the pattern shape and the area ratio (with a predetermined area range) Irregularities can be formed by defining the ratio of the area to be irradiated). In addition, according to the present invention, since the design can be determined by digital data, there is an advantage that the design time can be shortened. Furthermore, as a pattern to be formed on the relief forming layer, not only an abstract pattern such as a wrinkle but also a pattern such as a character or a symbol can be formed very easily.

Next, the manufacturing method of the relief forming body of this invention is demonstrated using figures. FIG. 1 is a process diagram showing an example of a method for producing a relief forming body of the present invention. The method for producing a relief-forming body of the present invention uses a relief-forming material 3 comprising a substrate 1 and a relief-forming layer 2 formed on the substrate 1 and made of a thermoplastic resin. This is a method in which a laser concavo-convex pattern 5 is formed on the relief forming layer 2 by performing laser irradiation 4 (FIG. 1B) to obtain a relief formed body.
Hereinafter, each structure of the relief forming material used in the present invention will be described in detail.

1. Relief-forming material First, the relief-forming material used in the present invention will be described. The relief forming material used in the present invention comprises at least a base and a relief forming layer made of a thermoplastic resin. In addition, when forming the fine uneven | corrugated pattern mentioned later in the said relief forming layer, a photothermal conversion layer may be formed between a base | substrate and a relief forming layer.

(1) Substrate The substrate used in the present invention is not particularly limited as long as it is a film-like (including sheet-like) material. Specifically, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyethylene terephthalate-isophthalate copolymer, terephthalic acid-cyclohexanedimethanol-ethylene glycol copolymer, polyethylene terephthalate / polyethylene naphthalate co-extruded film, etc. Polyester resins, polyamide resins such as nylon 6, nylon 6,6 and nylon 610, polyolefin resins such as polyethylene, polypropylene and polymethylpentene, vinyl resins such as polyvinyl chloride, polyacrylate, polymethacrylate, poly Acrylic resins such as methyl methacrylate, imide resins, polyarylate, polysulfone, polyethersulfone, polyphenylene ether, polyethylene Engineering plastics such as rephenylene sulfide (PPS), polyaramid, polyetherketone, polyethernitrile, polyetheretherketone, polyethersulfide, styrene resins such as polycarbonate and ABS resin, cellophane, cellulose triacetate, cellulose diacetate, nitro Examples thereof include polymer films (plastic films) such as cellulose-based films such as cellulose. The plastic film may be a stretched film or an unstretched film, but a film stretched in a uniaxial direction or a biaxial direction is preferable from the viewpoint of improving strength. The substrate used in the present invention is usually suitably used because polyester films such as polyethylene terephthalate and polyethylene naphthalate have heat resistance, dimensional stability, and resistance to ionizing radiation, and polyethylene terephthalate is most suitable. is there. Further, the above film may be used alone or in combination of two or more.

  Moreover, as a base | substrate used for this invention, metal films, such as paper, a synthetic paper, iron, aluminum, etc. other than a plastic film can also be used. A plastic film is preferable from the viewpoint of light transmittance. Moreover, you may add additives, such as a filler, a plasticizer, a coloring agent, and an antistatic agent, to the said base material as needed. In addition, the film thickness of the substrate used in the present invention is usually about 5 to 2000 μm.

  In addition, prior to the application of the composition of the relief forming layer described later, the substrate used in the present invention is subjected to corona discharge treatment, plasma treatment, ozone treatment, flame treatment, primer (anchor coat, adhesion promoter, Easy adhesion treatment such as treatment (also called easy adhesive), pre-heat treatment, dust removal treatment, and alkali treatment may be performed.

(2) Relief formation layer Next, the relief formation layer used for this invention is demonstrated. The relief forming layer used in the present invention is made of a resin having thermoplasticity. The thermoplastic resin is not particularly limited as long as it can form a laser uneven pattern, which will be described later. For example, a thermoplastic resin, and a solid curable resin having moldability. Examples thereof include a resin raw material composition, and among them, a solid curable resin raw material composition having moldability is preferable. In addition, the said curable resin raw material composition hardens | cures with ionizing radiation, a heat | fever, etc., and becomes curable resin.

  Examples of the curable resin raw material composition include an ionizing radiation curable resin raw material composition. As such an ionizing radiation curable resin raw material composition, what is comprised from the compound which has a radically polymerizable unsaturated group can be mentioned, for example. Specifically, there are two types shown in the following (a) and (b).

  (A) Those having a radically polymerizable unsaturated group in a polymer having a glass transition temperature of 0 to 250 ° C. More specifically, the polymer is a polymer obtained by polymerizing or copolymerizing the following compounds i) to viii) and introducing a radically polymerizable unsaturated group by the methods (a) to (d) described later.

i) Monomers having a hydroxyl group: N-methylolacrylamide, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate, 2-hydroxybutyl methacrylate, 2-hydroxy-3-phenoxypropyl methacrylate, 2-hydroxy-3-phenoxypropyl acrylate, and the like.
ii) Monomers having a carboxyl group: acrylic acid, methacrylic acid, acryloyloxyethyl monosuccinate and the like.
iii) Monomers having an epoxy group: glycidyl methacrylate and the like.
iv) Monomers having an aziridinyl group: 2-aziridinylethyl methacrylate, allyl 2-aziridinylpropionate, and the like.
v) Monomers having an amino group: acrylamide, methacrylamide, diacetone acrylamide, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate and the like.
vi) Monomers having a sulfonic group: 2-acrylamido-2-methylpropane sulfonic acid and the like.
vii) Monomer having an isocyanate group: an adduct of a radial polymerizable monomer having an active hydrogen and a diisocyanate such as a 1 to 1 mol adduct of 2,4-toluene diisocyanate and 2-hydroxyethyl acrylate.
viii) Further, in order to adjust the glass transition point of the above-mentioned polymer or copolymer, or to adjust the physical properties of the cured film, the above-mentioned compound can be copolymerized with this compound as shown below. A monomer can also be copolymerized. Examples of such copolymerizable monomers include methyl methacrylate, methyl acrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacrylate, butyl acrylate, butyl methacrylate, isobutyl acrylate, isobutyl methacrylate, t-butyl acrylate, t -Butyl methacrylate, isoamyl acrylate, isoamyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate and the like.

The following methods (a) to (d) show methods for introducing a radical polymerizable unsaturated group into the above polymer.
(A) In the case of a polymer or copolymer of a monomer having a hydroxyl group, a monomer having a carboxyl group such as acrylic acid or methacrylic acid is subjected to a condensation reaction.
(B) In the case of a polymer or copolymer of a monomer having a carboxyl group or a sulfone group, the aforementioned monomer having a hydroxyl group is subjected to a condensation reaction.
(C) In the case of a polymer or copolymer of a monomer having an epoxy group, an isocyanate group or an aziridinyl group, the above-mentioned monomer having a hydroxyl group or monomer having a carboxyl group is subjected to an addition reaction.
(D) In the case of a polymer or copolymer of a monomer having a hydroxyl group or a carboxyl group, a monomer having an epoxy group, a monomer having an aziridinyl group or a diisocyanate compound and a hydroxyl group-containing acrylate ester Addition reaction of 1 to 1 mole adduct of the body.
In order to perform the above reaction, it is preferable to add a trace amount of a polymerization inhibitor such as hydroquinone and feed dry air.

  (B) A compound having a melting point of 0 to 250 ° C. and having a radically polymerizable unsaturated group. Specific examples include stearyl acrylate, stearyl methacrylate, triacryl isocyanurate, cyclohexanediol diacrylate, cyclohexanediol dimethacrylate, spiroglycol diacrylate, and spiroglycol dimethacrylate.

  Further, as the resin for the relief forming layer, the above (a) and (b) can be mixed and used, and further, a radical polymerizable unsaturated monomer can be added thereto. This radically polymerizable unsaturated monomer improves crosslink density and improves heat resistance upon irradiation with ionizing radiation, and in addition to the aforementioned monomers, ethylene glycol diacrylate, ethylene glycol dimethacrylate, Polyethylene glycol diacrylate, polyethylene glycol dimethacrylate, hexanediol diacrylate, hexanediol dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, trimethylolpropane diacrylate, trimethylolpropane dimethacrylate, pentaerythritol tetraacrylate, penta Erythritol tetramethacrylate, pentaerythritol triacrylate, pentaerythritol trimethacrylate, dipenta Lithritol hexaacrylate, dipentaerythritol hexamethacrylate, ethylene glycol diglycidyl ether diacrylate, ethylene glycol diglycidyl ether dimethacrylate, polyethylene glycol diglycidyl ether diacrylate, polyethylene glycol diglycidyl ether dimethacrylate, propylene glycol diglycidyl ether diacrylate , Propylene glycol diglycidyl ether dimethacrylate, polypropylene glycol diglycidyl ether diacrylate, polypropylene glycol diglycidyl ether dimethacrylate, sorbitol tetraglycidyl ether tetraacrylate, sorbitol tetraglycidyl ether tetramethacrylate, etc. Can, with respect to 100 parts by weight of the solid content of the copolymer mixture described above, it is preferable to use at 0.1 parts by weight.

  The ionizing radiation curable resin raw material composition can be sufficiently cured by an electron beam, but when cured by ultraviolet irradiation, a photopolymerization initiator such as acetophenones, benzophenones, Michler benzoylbenzoate, Add a photopolymerization initiator such as α-aminoxime ester, tetramethylmeuram monosulfide, and thioxanthone, and a photosensitizer such as n-butylamine, triethylamine, tri-n-butylphosphine as necessary. .

  Further, the ionizing radiation curable resin material composition can be cured by heat energy if an appropriate catalyst is present.

  In addition, the thickness of the relief forming layer used in the present invention is not particularly limited as long as a desired laser uneven pattern can be formed. It is preferably in the range of 50 μm, particularly in the range of 0.5 to 5 μm.

  The relief forming layer used in the present invention can be formed on the substrate by a known coating method such as spin coating, knife coating, roll coating, bar coating, or the like. When a relief forming layer is to be partially formed on the substrate, a general printing technique such as screen printing or gravure printing or a transfer method can be used.

  Further, when the relief forming layer used in the present invention is made of the ionizing radiation curable resin raw material composition, it is apparently formed in a dry-to-touch state, and thus can be stored repeatedly.

2. Next, a method for forming a laser uneven pattern according to the present invention will be described. The manufacturing method of the relief forming body of the present invention is a method for obtaining a relief forming body by forming a laser uneven pattern on the relief forming layer by irradiating the relief forming layer of the relief forming material with laser.

  The type of laser used in the present invention is not particularly limited as long as a desired laser uneven pattern can be formed. For example, ruby laser, YAG laser, semiconductor laser, helium-neon laser, An argon laser, a carbon dioxide laser, an excimer laser, etc. can be mentioned.

  The oscillation wavelength of the laser used in the present invention is not particularly limited, and can be widely used in the ultraviolet, visible, and infrared regions from ultraviolet rays around 100 nm to about 2 mm. The oscillation wavelength when a semiconductor laser is used is, for example, preferably in the range of 500 to 1500 nm, and more preferably in the range of 600 to 1000 nm.

  Further, the intensity of the laser used in the present invention varies greatly depending on the oscillation wavelength and the irradiated material, and is not particularly limited. The laser intensity when a semiconductor laser is used is, for example, preferably in the range of 0.5 to 1.5 W, and more preferably in the range of 0.7 to 1.1 W.

  In addition, the spot diameter of the laser used in the present invention is not particularly limited as long as a desired laser uneven pattern can be formed, but specifically, it is in the range of 1 to 80 μm. It is preferable.

  Further, the surface roughness Ra of the laser concave / convex pattern obtained by the laser irradiation is different depending on the use such as a wrinkle pattern to be formed. For example, it is in the range of 0.02 to 50 μm, especially 0.05 to 5 μm. It is preferable to be within the range.

  The laser generator for generating the laser is not particularly limited, and a commercially available laser generator can be used.

  Moreover, an example of the apparatus used for the formation method of the said laser uneven | corrugated pattern is shown in FIG. The apparatus shown in FIG. 2 includes a laser head 21 as a light irradiation source and an XY stage 22 for controlling the irradiation position. The laser head 21 is provided with a laser driver 25 as a control mechanism that can adjust or turn on or off the output energy of the light source, and is configured to be controllable by the PC 24. In addition, the laser head 21 is provided with an optical system such as a mirror and a lens for adjusting the laser light source and the optical path and focus of the emitted light. On the XY stage 22, the relief forming material 23 is placed so that the relief forming layer is on the upper side, and an XY stage controller 26 that controls the movement of the XY stage 22 is connected to be controlled by the PC 24.

  In addition, when performing laser irradiation using the above laser generator or the like, it is preferable to appropriately select a wavelength of light having a high transmittance with respect to the substrate in order to prevent damage when the light passes through the substrate. . For example, when a polyethylene terephthalate film (which may be referred to as PET) is used for the substrate using laser light, it is possible to appropriately select laser light close to visible light having a wavelength with a high transmittance with respect to PET. preferable.

  In addition, the shape of the laser concave / convex pattern formed by using the above laser device or the like is not particularly limited, and examples thereof include an abstract pattern such as a collar and a pattern such as a character and a symbol. In the present invention, a desired pattern or pattern can be created using a PC, and a pattern having an arbitrary area ratio can be created by irradiating a laser corresponding to the digital data. The area ratio is preferably 20% to 80% from the viewpoint of pattern recognition.

3. Next, a method for forming a fine uneven pattern according to the present invention will be described. In the present invention, a relief pattern sheet having a relief pattern corresponding to a fine concavo-convex pattern on the surface is used, and a photothermal conversion layer that generates heat by light irradiation is provided on the relief forming material or the relief pattern sheet. Before or after the formation, the light-heat conversion layer is irradiated with light in a state where the relief forming material and the relief pattern sheet are in contact with each other so that the relief forming layer and the relief pattern are in contact with each other. It is preferable to mold the fine concavo-convex pattern on the forming layer. When a mat film for wrinkle formation is produced using the relief forming body having the fine uneven pattern, and the surface of the printed product is roughened using the mat film for wrinkle formation, the gloss of the surface of the print product This is because the degree can be lowered.

  That is, in the present invention, it is preferable to form a fine uneven pattern on the relief forming layer using a relief pattern sheet before or after forming the laser uneven pattern. At this time, in order to form a fine concavo-convex pattern, a photothermal conversion layer that generates heat by light irradiation is placed on either the relief forming material or the relief pattern sheet. When the photothermal conversion layer is installed on the relief forming material, it is usually installed between the substrate and the relief forming layer. When the photothermal conversion layer is installed on the relief pattern sheet, the support and the relief are usually used. Installed between the pattern.

  Hereinafter, the relief pattern sheet and the photothermal conversion layer used in the present invention will be described, and then a method for forming a fine uneven pattern using the relief pattern sheet will be described.

(1) Relief Pattern Sheet First, the relief pattern sheet used in the present invention will be described. The relief pattern sheet used in the present invention usually comprises a support and a relief pattern layer having a relief pattern. In addition, in this invention, when the photothermal conversion layer mentioned later is installed in a relief pattern sheet, the said photothermal conversion layer is normally installed between a support body and a relief pattern layer.

  Although it does not specifically limit as a support body used for this invention, For example, a metal, glass, a plastic film etc. are mentioned, A plastic film is preferable from a light-transmissive viewpoint. As such a plastic film, the same thing as the plastic film used for the base | substrate of the relief forming material mentioned above can be mentioned, for example.

  Further, the material of the relief pattern layer used in the present invention is not particularly limited, and examples thereof include the ionizing radiation curable resin raw material composition described above.

  Further, the relief pattern formed on the relief pattern layer is a pattern opposite to the fine concavo-convex pattern formed on the relief forming layer. The surface roughness Ra of the relief pattern is not particularly limited, but specifically, it is preferably in the range of 0.01 to 50 μm, and more preferably in the range of 0.05 to 5 μm.

  Further, the method for producing such a relief pattern is not particularly limited, but (a) an original for duplication on the surface of the ionizing radiation curable resin raw material composition described in JP-B-6-85103. A method of irradiating and peeling ionizing radiation after forming by pressing and bonding the fine concavo-convex pattern (semi-dry replication method), (b) a liquid ionizing radiation curable resin on the surface of the replica master Examples thereof include a photopolymerization method (2P method) in which a raw material composition is applied, stretched, shaped, irradiated with ionizing radiation, cured, and peeled off from a replica master.

  Hereinafter, the 2P method (b) will be described. FIG. 3 is a process diagram showing an example of a method for forming a relief pattern sheet from an original plate by the 2P method. First, as shown in FIG. 3 (a), an original plate 31 on which the same pattern as the fine concavo-convex pattern was formed, and an ionizing radiation curable resin raw material composition 32 was dropped on the original plate 31 as shown in FIG. 3 (b). To do. Next, as shown in FIGS. 3C and 3D, the support 34 is placed thereon and pressed to spread the ionizing radiation curable resin raw material composition 32 so as to be uniformly filled in the recesses. And Next, as shown in FIG. 3E, ionizing radiation curable resin raw material composition 32 is cured by irradiating ionizing radiation such as ultraviolet rays from the original 31 or the support 34 side. As shown in FIG. 5F, the curable resin 33 is cured on the support 34 by peeling the cured curable resin (relief pattern layer) 33 and the support 34 from the original plate 31. A relief pattern sheet 36 which is formed and further has a relief pattern 35 is obtained.

(2) Photothermal conversion layer Next, the photothermal conversion layer used for this invention is demonstrated. The photothermal conversion layer used in the present invention has a property of generating heat by light irradiation. The photothermal conversion layer generates heat by light irradiation, softens and melts the relief forming layer, the relief pattern layer, and the like, thereby forming a fine uneven pattern in the relief forming layer. In the present invention, the photothermal conversion layer is disposed on either the relief forming material or the relief pattern sheet.

The photothermal conversion layer used in the present invention contains at least a light absorbing dye and a binder resin. The light absorbing dye is not particularly limited. For example, carbon black, polymethine dyes such as cyanine and pyrylium, phthalocyanine dyes such as copper phthalocyanine, naphthalocyanine dyes, dithiol metal complex salts Examples thereof include dyes, naphthoquinone dyes, anthraquinone dyes, triphenylmethane dyes, aluminum dyes, and diimmonium dyes.
The binder resin is not particularly limited as long as it can hold the light-absorbing dye. For example, polyester resin, acrylic resin, epoxy resin, butyral resin, acetal resin, vinyl chloride- Examples include vinyl acetate copolymer, polyurethane resin, and thermoplastic high molecular weight epoxy. In the present invention, among them, a polyester resin is preferably used.

(3) Method for forming fine uneven pattern Next, a method for forming a fine uneven pattern on the relief forming layer of the relief forming material using the relief pattern sheet will be described. The fine concavo-convex pattern is formed before or after the laser concavo-convex pattern is formed.

  Here, the method for forming a fine uneven pattern in the present invention will be described using the case where the photothermal conversion layer is provided on a relief pattern sheet and the fine uneven pattern is formed before the laser uneven pattern is formed. For example, as shown in FIG. 4A, a relief forming material 3 having a relief forming layer 2 made of an ionizing radiation curable resin raw material composition on the surface of a substrate 1 made of a polyethylene terephthalate film or the like, a polyethylene terephthalate film or the like A support 6 comprising: a photothermal conversion layer 7 formed on the support 6; and a relief pattern sheet 10 having a relief pattern layer 9 formed on the photothermal conversion layer 7 and having a relief pattern 8. prepare.

  Next, as shown in FIG. 4B, the support for the relief pattern sheet 10 in a state where the relief forming material 3 and the relief pattern sheet 10 are in contact with each other so that the relief forming layer 2 and the relief pattern 8 are in close contact with each other. The light 11 such as laser light is irradiated from the 6 side toward the photothermal conversion layer 7. In the photothermal conversion layer 7, the portion irradiated with light generates heat. The heat of the photothermal conversion layer 7 is transmitted to the portion of the relief forming layer 2 that is in contact with the heat generating portion of the photothermal conversion layer, and the relief forming layer 2 is heated and melted. In the molten or softened relief forming layer 2, the relief pattern 8 is in contact with and in close contact with the relief forming layer 2, so that the fine uneven pattern 12 corresponding to the relief pattern 8 is formed on the relief forming layer 2 ( FIG. 4 (c)).

  In the above method, the relief pattern may be in a state where the relief pattern is in contact with and in close contact with the relief forming layer, and it is not necessary to pressurize the relief forming material and the relief pattern sheet. However, in order to satisfactorily maintain the close contact state between the relief forming layer and the relief pattern, a laminate obtained by laminating a relief forming material and a relief pattern sheet may be sandwiched between glass plates or the like, and the laminate may be fixedly held. .

  Further, in the above method, if air exists between the relief pattern and the relief forming layer, air becomes a heat insulating layer, and heat may not be transferred from the relief pattern to the relief forming layer. Care must be taken not to. Examples of the method of closely contacting the relief forming layer and the relief pattern so that air does not enter include, for example, a vacuum adsorption method in which air between the relief forming layer and the relief pattern is sucked and exhausted by a vacuum pump or the like. be able to.

  In the above method, examples of the method of irradiating the light-heat conversion layer with light include a method used by an apparatus that generates laser light. When irradiating light to the photothermal conversion layer, it is possible to irradiate a desired part by irradiating light from an irradiation source in a spot shape and moving a spot to scan a predetermined region. By irradiating light in this way, heat generation in the light-to-heat conversion layer can be applied only to a necessary portion by a necessary optimum amount, and the influence of heat can be minimized.

  Further, the apparatus used for forming the fine concavo-convex pattern in the present invention is not particularly limited, but specifically, it is shown in FIG. 2 described in “2. Method for forming laser concavo-convex pattern”. And the like.

  When the spot-shaped light is scanned using the apparatus shown in FIG. 2, the laminated body in which the relief forming body and the relief pattern sheet are in close contact with each other is placed at a predetermined position on the surface of the XY stage 22. . In this state, when an irradiation pattern is instructed from the PC 24, the laser head 21 is placed at the start position, the XY stage 22 is moved, and the laser light irradiation of the laser head 21 is turned on / off to form a predetermined pattern. Irradiate.

  Further, the light emitted from the laser head 21 is, for example, in a spot shape having a diameter of 100 μm or less, and the XY stage 22 is driven to scan the laminated body with a predetermined scanning pattern in the XY direction. Let it be irradiated. The laser light irradiated on the light-to-heat conversion layer of the laminate is irradiated as a minute spot on the light-to-heat conversion layer, and the laser light spots move one after another by scanning. It takes very short time. As a result, the relief forming layer or relief pattern in contact with the light-to-heat conversion layer is heated only for a very short spot-like area for a short time, and is cooled and shaped as soon as the resin in the relief forming layer is melted and shaped. The state is fixed immediately.

  Further, it is preferable to appropriately select the wavelength of light having high transmittance for these materials so that the light-to-heat conversion layer is irradiated with light and the light does not damage the light when passing through the support and the substrate. . For example, when laser light is used and PET is used for the support and the substrate, it is preferable to appropriately select laser light close to visible light having a wavelength that has a high transmittance with respect to PET.

  Also, when irradiating the light-to-heat conversion layer with light, irradiate the entire pattern without irradiating the light-to-heat conversion layer, and heat the light-to-heat conversion layer into a pattern to form the relief forming layer or relief pattern into an arbitrary shape. By heating, on-demand information can be recorded. As on-demand information, for example, unique information such as an individual ID number can be used.

  Next, the manufacturing method of the relief forming body which has the said fine uneven | corrugated pattern is demonstrated. The manufacturing method of the relief forming body which has the said fine concavo-convex pattern changes with the place where a photothermal conversion layer is installed, and the time of forming a fine concavo-convex pattern. As an example of the manufacturing method of the relief forming body which has the said fine uneven | corrugated pattern, it demonstrates using the case where a photothermal conversion layer is installed in the relief pattern sheet, for example. In this case, the following two broad classifications can be made depending on the time of forming the fine uneven pattern.

(I) When the fine concavo-convex pattern is formed before the formation of the laser concavo-convex pattern In this case, as a method for producing a relief formed body, for example, as shown in FIG. A relief forming material 3 provided, and a relief pattern sheet 10 provided with a support 6, a photothermal conversion layer 7, and a relief pattern layer 9 having a relief pattern 8 in this order are prepared. Next, as shown in FIG. 5B, the support for the relief pattern sheet 10 in a state where the relief forming material 3 and the relief pattern sheet 10 are in contact with each other so that the relief forming layer 2 and the relief pattern 8 are in close contact with each other. The light 11 such as laser light is irradiated from the 6 side toward the photothermal conversion layer 7. Next, as shown in FIG. 5 (c), the relief pattern sheet 10 is peeled off, and laser irradiation 4 is performed on the formed fine uneven pattern 12, and as shown in FIG. 5 (d), the laser uneven pattern 5 and a method for obtaining a relief-formed body provided with the fine concavo-convex pattern 12.

(Ii) When the fine concavo-convex pattern is formed after the formation of the laser concavo-convex pattern In this case, as a method for producing the relief formed body, for example, as shown in FIG. 6 (a), a substrate 1 and a relief forming layer 2 are provided. The relief forming material 3 is irradiated with laser 4 to form a laser uneven pattern, and then a relief having a support 6, a photothermal conversion layer 7, and a relief pattern 8 as shown in FIG. 6 (b). Using the relief pattern sheet 10 provided with the pattern layer 9 in this order, as shown in FIG. 6C, the relief forming material 3 and the relief pattern sheet 10 are attached so that the relief forming layer 2 and the relief pattern 8 are in close contact with each other. In the contact state, light 11 such as laser light is irradiated from the support 6 side of the relief pattern sheet 10 toward the photothermal conversion layer 7. Next, as shown in FIG. 6 (d), there is a method in which the relief pattern sheet 10 is peeled off to obtain a relief forming body provided with the laser uneven pattern 5 and the fine uneven pattern 12.

3. Curing of relief forming layer In the present invention, when the relief forming layer is made of the ionizing radiation curable resin raw material composition or the like, the ionizing radiation is applied after the laser uneven pattern or the laser uneven pattern and the fine uneven pattern are formed. Irradiation is preferable to completely cure the relief forming layer. As such ionizing radiation, all ultraviolet rays (UV-A, UV-B, UV-C), visible rays, gamma rays, X-rays, electron beams and the like can be used, but ultraviolet rays or electron beams are preferable. It is. As the ionizing radiation irradiation device, an ultraviolet lamp such as an ultrahigh pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc, a black light lamp, a metal halide lamp is used as a light source in the case of irradiating ultraviolet rays as ionizing radiation. The wavelength of ultraviolet rays is usually about 200 to 400 nm, and the wavelength may be selected according to the composition of the resin layer. Moreover, the irradiation amount can also be irradiated according to the composition of the resin layer, the output of the ultraviolet lamp and the processing speed.

  When irradiating an electron beam as ionizing radiation, various electron beam accelerators such as Cockloft Walton type, Bande graph type, resonant transformer type, insulated core transformer type, linear type, dynamitron type, high frequency type, etc. A device capable of irradiating an electron beam by an electro curtain method, a beam scanning method, or the like is used. Preferably, an “electro curtain” (trade name) capable of irradiating a uniform electron beam in a curtain form from a linear filament can be used. In addition, the irradiation amount of an electron beam is normally irradiated with electrons having an energy of 100 to 1,000 keV, preferably 100 to 300 keV, with an irradiation amount of about 0.5 to 20 Mrad. Further, the atmosphere during irradiation is performed at an oxygen concentration of 500 ppm or less, and it is usually preferable to perform the irradiation at about 200 ppm.

4). Others In the present invention, a relief forming body can be formed using a temporary relief forming body and the 2P method. As such a method, for example, first, a temporary relief forming body having a laser concavo-convex pattern or the like is created by performing laser irradiation or the like on the relief forming material, and then the temporary relief forming body. And a method of obtaining a relief formed body by repeating the 2P method described above twice. That is, in the above method, the relief forming material is a member used to form a temporary relief forming body. Therefore, the method for producing a relief forming body of the present invention may be a method of directly obtaining a relief forming body by imparting a laser uneven pattern to the relief forming material, or providing a laser uneven pattern to the relief forming material. Alternatively, a temporary relief forming body may be formed, and a relief forming body may be obtained using the temporary relief forming body.

B. Next, a method for producing a wrinkle-forming mat film of the present invention will be described. The method for producing a wrinkle-forming mat film of the present invention comprises: a relief-forming body obtained by the method for producing a relief-forming body; and a raw material film comprising a base material and a wrinkle-forming layer formed on the base material. The wrinkle forming layer is superimposed on the relief forming layer, and a reverse image of the concavo-convex pattern of the relief forming layer is formed on the wrinkle forming layer. In the present invention, the uneven pattern means a laser uneven pattern, or a laser uneven pattern and a fine uneven pattern.

  According to the present invention, it is possible to obtain a wrinkle-forming mat film having a desired pattern such as wrinkles, characters and symbols by using the relief forming body. Furthermore, by roughening the surface of the printed matter using the wrinkle forming mat film obtained by the present invention, as a result, the design (pattern) and function (glossiness) of the surface of the printed matter can be easily controlled. .

Next, the manufacturing method of the mat | matte film for wrinkle formation of this invention is demonstrated using figures. FIG. 7 is a process diagram showing an example of a method for producing a wrinkle forming mat film of the present invention. A base material, a relief forming body 3 ′ formed on the base body 1 and provided with a relief forming layer 2 having a laser concavo-convex pattern 5 and a fine concavo-convex pattern 12, and a raw material comprising a base material 13 and a wrinkle forming layer 14 By using the film 15, the wrinkle forming layer 14 and the relief forming layer 2 are overlapped, and a reverse image of the concavo-convex pattern of the relief forming layer 2 is formed on the wrinkle forming layer 14. This is a method for obtaining a matte film.
Hereafter, each structure of the raw material film etc. which are used for this invention is demonstrated in detail.

1. Raw Material Film First, the raw material film used in the present invention will be described. The raw material film used in the present invention comprises at least a base material and a wrinkle forming layer formed on the base material.

(1) Wrinkle forming layer The wrinkle forming layer used in the present invention is formed on a substrate and contains at least a resin having thermoplasticity. Such a resin is not particularly limited as long as it can form a desired wrinkle-forming mat film. Specifically, it is described in “A. Relief Forming Method”. Since the same materials as those used for the relief forming layer can be mentioned, description thereof is omitted here.

  Moreover, as a film thickness of the wrinkle formation layer used for this invention, it is preferable to exist in the range of 0.1-10 micrometers normally, especially in the range of 0.3-5 micrometers.

(2) Substrate Next, the substrate used in the present invention will be described. The material of the base material used in the present invention is not particularly limited as long as it is a film-like (including sheet-like) material, but specifically, the above-mentioned “A. Relief forming body production method” Since the same substrate as that described in (1) can be given, description thereof is omitted here.

2. Relief forming body Next, the relief forming body used in the present invention will be described. The relief forming body used in the present invention is obtained by the above-mentioned “A. Manufacturing method of relief forming body”. Each configuration of the relief forming body is the same as that of the “A. Relief forming body manufacturing method” described above, and thus the description thereof is omitted here.

3. Next, a method for forming a wrinkle pattern in the present invention will be described. In the present invention, the wrinkle-forming mat film is formed by superimposing the wrinkle-forming layer of the raw material film and the relief-forming layer of the relief-forming body, and shaping a reverse image of the concavo-convex pattern of the relief-forming layer. create.

  The method for shaping the reverse image of the concavo-convex pattern is not particularly limited as long as it can form a desired wrinkle pattern on the wrinkle forming layer. The method using a pressure roller etc. can be mentioned, The method using a heat roller is especially preferable. Furthermore, in this invention, when a wrinkle formation layer consists of the said ionizing radiation curable resin raw material composition, after forming an uneven | corrugated pattern, it is preferable to irradiate ionizing radiation and to harden a wrinkle formation layer completely. At this time, the ionizing radiation used is the same as that described in the above-mentioned “A. Relief forming body manufacturing method”, and therefore the description thereof is omitted here.

4). Next, the wrinkle forming mat film obtained by the present invention will be described. The wrinkle-forming mat film obtained by the present invention is used for roughening the surface of a printed material or the like.

  The surface roughness Ra of the wrinkle-forming mat film obtained according to the present invention is not particularly limited, but specifically it is preferably in the range of 0.05 μm to 3 μm. In the present invention, the surface roughness Ra is measured using a three-dimensional surface roughness shape measuring instrument (Surfcom 570A-3DF, manufactured by Tokyo Seimitsu).

  Moreover, when the wrinkle-forming mat film obtained by the present invention has the fine uneven pattern described above, the glossiness of the printed material to be roughened can be lowered. That is, when it is desired to increase the glossiness of the roughened print, it is preferable to form a wrinkle-forming mat film using the relief forming body having only the laser uneven pattern described above. When it is desired to reduce the glossiness of the film, it is preferable to form a mat-forming mat film using the relief forming body having the laser uneven pattern and the fine uneven pattern described above. Furthermore, a desired wrinkle-forming mat film can be obtained by adjusting the shape and depth of the laser uneven pattern and the fine uneven pattern. Further, the appropriate range of the area ratio of the pattern formed on the wrinkle-forming mat film varies depending on the pattern, and is not limited as long as a surface suitable as a final printed matter can be obtained. If only the gloss level is controlled, the area ratio can be arbitrarily set in the range of 0 to 100%. From the viewpoint of pattern recognition, if the area ratio is smaller than 20% or larger than 80%, it is not preferable because it becomes a faint or crushed feeling.

  The wrinkle forming mat film obtained according to the present invention is particularly effective for a printed material having a resin layer on the surface. Examples of the resin constituting such a resin layer include conventionally known various resins having excellent durability and transparency. Specifically, acrylic resins, cellulose resins, polyvinyl acetal resins, Examples thereof include polyester resin, vinyl chloride-vinyl acetate copolymer, polystyrene resin, polyamide resin, polyimide resin, and polyamideimide resin.

  Moreover, it is preferable that it is 80-120 degreeC as a glass transition temperature of the said resin. When the glass transition temperature is less than 80 ° C., the resin is easily fused to the mat film for wrinkle formation during roughening, and when the glass transition temperature exceeds 120 ° C., a pattern such as wrinkles is formed. Because it becomes difficult. Moreover, the said resin can be used individually or in mixture.

  On the other hand, examples of the substrate of the printed material include natural pulp paper, coated paper, tracing paper, plastic film that does not deform by heat and pressure when roughening, glass, metal, ceramics, wood, cloth, etc. be able to. The natural pulp paper is not particularly limited. For example, fine paper, art paper, lightweight coated paper, fine coated paper, coated paper, cast coated paper, synthetic resin or emulsion impregnated paper, synthetic rubber latex impregnated paper, synthetic paper Examples thereof include resin-added paper and thermal transfer paper.

  The surface roughness Ra of the printed material roughened by the wrinkle-forming mat film obtained according to the present invention is not particularly limited, but is specifically in the range of 0.05 μm to 3 μm. Is preferred.

  Moreover, the mat | matte film for wrinkle formation obtained by this invention can reduce the glossiness of a printed matter, when it has the fine uneven | corrugated pattern mentioned above. In a printed product roughened using a mat film for forming wrinkles having the fine concavo-convex pattern, the specular gloss at an incident angle of 60 degrees is preferably 40 or less. In the present invention, the specular gloss is obtained by measuring the specular gloss at an incident angle of 60 degrees using a gloss meter (VG2000, manufactured by Nippon Denshoku Industries Co., Ltd.) based on JISZ8741. In addition, since the measured value of the glossiness is affected by the color or pattern of the background of the printed material, the entire background of the printed material is unified with a black solid color in the measurement of the glossiness. Moreover, in the printed material roughened by using the wrinkle forming mat film having no fine uneven pattern, the specular gloss at an incident angle of 60 degrees is preferably 40 or more.

  Further, the shape and use of the printed material roughened by the mat-forming mat film obtained by the present invention are not particularly limited, and for example, stock certificates, securities, certificates, passbooks, boarding tickets, car betting tickets. Cards such as stamps, stamps, admission tickets, admission tickets, tickets, cash cards, credit cards, prepaid cards, members cards, greeting cards, postcards, business cards, driver's licenses, IC cards, optical cards, etc. Cases such as cartons, containers, bags, forms, envelopes, tags, OHP sheets, slide films, bookmarks, calendars, posters, brochures, menus, passports, POP supplies, coasters, displays, nameplates, keyboards, cosmetics, Accessories such as wristwatches, lighters, stationery, report paper, Wood, panel, emblem, key, cloth, clothing, footwear, radio, television, calculators, devices such as OA equipment, various types of sample book, album, In addition, the output of computer graphics, medical image output, and the like.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has any configuration that has substantially the same configuration as the technical idea described in the claims of the present invention and that exhibits the same effects. Are included in the technical scope.

  Hereinafter, the present invention will be specifically described with reference to examples.

[Example 1]
(1) Creation of relief forming body (creation of relief forming material)
First, in order to prepare a relief forming layer, an ultraviolet curable resin raw material composition having the following blending ratio was diluted with methyl ethyl ketone (MEK) to prepare an ink in which the solid content of the composition was adjusted to 50%.
The composition of the ultraviolet curable resin raw material composition is shown below (unit: parts by mass).
-Urethane-modified acrylate (A) 100
Silicone (methylpolysiloxane containing trimethylsiloxysilicate, trade name: KF-7312 manufactured by Shin-Etsu Chemical Co., Ltd.) 1
・ Polyfunctional urethane acrylate (Nippon Gosei Kagaku Kogyo Co., Ltd., trade name: Violet UV-1700B)
25
-Photopolymerization initiator (trade name: Irgacure 907, manufactured by Ciba Specialty Chemicals)
5

The urethane-modified acrylate (A) was produced by the following method.
A 2-liter four-necked flask equipped with a condenser, dropping funnel and thermometer was charged with 40 g of toluene and 40 g of methyl ethyl ketone (MEK) together with an azo-based initiator, and 24.6 g of 2-hydroxyethyl methacrylate (HEMA), methyl methacrylate. (MMA) 73.7 g, dicyclopentenyloxyethyl methacrylate 24.6 g, toluene 20 g, and MEK 20 g mixed via a dropping funnel over a period of about 2 hours, reacted at a temperature of 100 to 110 ° C. for 8 hours. And then cooled to room temperature. A mixed liquid of 27.8 g of 2-isocyanatoethyl methacrylate (manufactured by Showa Denko: Karenz MOI), 20 g of toluene and 20 g of MEK was added thereto, and an addition reaction was carried out using dibutyltin laurate as a catalyst. The reaction product was subjected to IR analysis, and the disappearance of the absorption peak at 2200 cm ⁻¹ of the isocyanate group was confirmed to complete the reaction. The obtained urethane-modified acrylate solution had a non-volatile content of 41.0%, a molecular weight of 30,000 by GPC analysis (solvent THF, standard polystyrene conversion) of the acrylate, and the average number of double bonds in one polymer molecule was 13. 0.0 mol%.

Next, a relief forming material was obtained by coating the surface of a substrate composed of a polyethylene terephthalate (PET) sheet with the above-described ink by a gravure coating method (coating amount: 2 g / m ² ).

(Create relief pattern sheet)
First, the following photothermal conversion layer coating solution is applied to the surface of the easy-adhesion PET sheet by a gravure coating method (coating amount: 0.5 g / m ² ). A conversion layer was provided.
The composition of the photothermal conversion layer coating solution is shown below (unit: parts by mass).
・ Carbon black (Sanzen Chemical: # 258) 1
・ Binder resin (polyester resin, Toyobo Byron 200) 1
UV curing agent (Mitsui Takeda Chemical Company: Takenate A10) 0.1
・ Solvent (MEK / toluene = 1/1) 8

  Next, a UV curable resin for a plate material (manufactured by The Inktec Co., Ltd .: UV-SEL clear OP varnish) is dropped onto the light conversion layer, laminated on a relief pattern resin original plate, and temporarily irradiated with ultraviolet rays. Then, the relief pattern resin original plate was peeled off, and ultraviolet rays were re-irradiated to fully cure the relief pattern to obtain a relief pattern sheet in which a PET sheet, a photothermal conversion layer, and a relief pattern were sequentially formed. The surface roughness Ra of the obtained relief pattern was 0.153 μm.

(Creation of fine uneven patterns)
Using the relief forming material and the relief pattern sheet obtained by the above method, a fine uneven pattern was created on the relief forming layer of the relief forming material. Specifically, first, the relief forming layer and the relief pattern were brought into close contact with each other by a vacuum adsorption method to form a laminate. Next, a semiconductor laser having a wavelength of 808.5 nm is used as the laser, and the laminate is placed on the XY stage so that the substrate side is the laser irradiation side, and the XY stage shown in FIG. Was irradiated with a laser. At this time, the XY stage is moved at a speed of 20 mm / sec, the laser spot diameter is 72 μm, the laser output is 0.935 W, the irradiation energy per dot (diameter 72 μm) is 9350 × (0.072 / 20) = The irradiation amount per unit length was 33.7 × (1 / 0.072) = 468 mJ. Then, the relief formation sheet in which the fine unevenness pattern was formed was obtained by peeling a relief pattern sheet.

(Create laser uneven pattern)
Next, an abstract pattern having an area ratio of 29%, 49%, and 66% is created using a PC, and laser irradiation corresponding to the digital data is performed on the relief forming layer on which the fine concavo-convex pattern is formed, A laser uneven pattern was obtained. At this time, a semiconductor laser having a wavelength of 808.5 nm was used, the laser intensity was 0.935 W, and the laser spot diameter was 20 μm. Moreover, the XY stage etc. used the apparatus similar to the time of producing a fine uneven | corrugated pattern. Finally, the relief forming layer on which the laser concavo-convex pattern and the fine concavo-convex pattern were formed was irradiated with ultraviolet rays, and the uncured portion of the relief forming layer was completely cured to obtain a relief formed body. The abstract pattern used is shown in FIG.

(2) Creation of wrinkle-forming mat film On the surface of a base material made of a polyethylene terephthalate (PET) sheet, the same ink as in Example 1 in which the ultraviolet curable resin raw material composition was dissolved was applied by gravure coating (coating coating amount: by 2 g / m ²⁾ to give the film material having a substrate and a wrinkle formed layer.
Next, using the relief forming body obtained by the method described above, the relief forming layer on which the laser uneven pattern and the fine uneven pattern were formed and the wrinkle forming layer of the raw material film were overlaid, and a heat roller (195 ° C., A reverse image such as the laser uneven pattern was formed on the wrinkle forming layer by pressure bonding at 10 mm / sec. Next, the uncured portion of the wrinkle forming layer was completely cured by irradiating the wrinkle forming layer with ultraviolet rays to obtain a wrinkle forming layer mat film.

(3) Surface roughening of printed matter First, a black plain image was formed on the entire surface of a PET substrate having a thickness of 0.3 mm, and a resin layer made of an acrylic resin was formed thereon to obtain a printed matter. Next, by using the mat film for wrinkle formation obtained by the above method, the wrinkle forming layer and the resin layer are overlapped and pressure-bonded with a heat roller (195 ° C., 10 mm / sec), thereby the resin layer The surface of was roughened. The gloss of the printed material roughened in this way was measured as a specular gloss at an incident angle of 60 ° C. based on JISZ 8741 using a gloss meter (VG2000, manufactured by Nippon Denshoku Industries Co., Ltd.). The results are shown in Table 1.

[Example 2]
(1) Preparation of relief forming body The same relief forming material as in Example 1 was used. Next, character patterns having an area ratio of 28%, 52%, and 69% were created using PC, and laser irradiation corresponding to the digital data was performed on the relief forming layer to obtain a laser uneven pattern. At this time, the laser irradiation conditions and the like were the same as in Example 1. Next, a relief pattern sheet having a relief pattern with a surface roughness Ra of 0.170 μm is prepared by the same method as in Example 1, and then the relief pattern and the relief forming layer are brought into close contact with each other by a vacuum adsorption method. A laminate was formed, and a fine uneven pattern was obtained on the relief forming layer by the same method as in Example 1. Finally, the relief forming layer on which the laser concavo-convex pattern and the fine concavo-convex pattern were formed was irradiated with ultraviolet rays, and the uncured portion of the relief forming layer was completely cured to obtain a relief formed body. The used character pattern is shown in FIG.

(2) Preparation of wrinkle forming mat film A wrinkle forming mat film was obtained in the same manner as in Example 1 using the relief forming body obtained by the above method.

(3) Roughening of printed matter Using the wrinkle-forming mat film obtained by the above method, a printed matter in which the surface of the resin layer was roughened was obtained in the same manner as in Example 1. Table 2 shows the results of the glossiness of the roughened printed material.

[Example 3]
(1) Preparation of relief forming body The same relief forming material as in Example 1 was used. Next, abstract pattern patterns with an area ratio of 29%, 49%, and 66% were created using PC, and laser irradiation corresponding to the digital data was performed on the relief forming layer to obtain a laser uneven pattern. . At this time, the laser irradiation conditions and the like were the same as in Example 1. The relief forming layer on which the laser concavo-convex pattern was formed was irradiated with ultraviolet rays, and the uncured portion of the relief forming layer was completely cured to obtain a relief forming body. The used abstract pattern is the same as that in the first embodiment.

(2) Preparation of wrinkle forming mat film A wrinkle forming mat film was obtained in the same manner as in Example 1 using the relief forming body obtained by the above method.

(3) Roughening of printed matter Using the wrinkle-forming mat film obtained by the above method, a printed matter in which the surface of the resin layer was roughened was obtained in the same manner as in Example 1. Table 3 shows the results of the glossiness of the roughened printed material.

[Example 4]
A relief forming body and a wrinkle forming mat were prepared in the same manner as in Example 3 except that symbol patterns having an area ratio of 30%, 46% and 64% were prepared using a PC, and laser irradiation corresponding to the digital data was performed. A film was obtained. The symbol pattern used is shown in FIG.
Further, using the above-described mat film for forming wrinkles, a printed material having a roughened resin surface was obtained in the same manner as in Example 3. Table 4 shows the results of the glossiness of the roughened printed material.

It is process drawing which shows an example of the manufacturing method of the relief formation body of this invention. It is explanatory drawing which shows the outline of an example of the apparatus used for the manufacturing method of the relief forming body of this invention. It is process drawing which shows an example of the manufacturing method of the relief pattern sheet used for this invention. It is process drawing which shows an example of the manufacturing method of a fine uneven | corrugated pattern. It is process drawing which shows the other example of the manufacturing method of the relief formation body of this invention. It is process drawing which shows the other example of the manufacturing method of the relief formation body of this invention. It is process drawing which shows an example of the manufacturing method of the mat film for wrinkle formation of this invention. It is explanatory drawing which shows an example of the abstract pattern used for this invention. It is explanatory drawing which shows an example of the character pattern used for this invention. It is explanatory drawing which shows an example of the symbol pattern used for this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Base | substrate 2 ... Relief formation layer 3 ... Relief formation material 3 '... Relief formation body 4 ... Laser 5 ... Laser uneven | corrugated pattern 6 ... Support body 7 ... Photothermal conversion layer 8 ... Relief pattern 9 ... Relief pattern layer 10 ... Relief pattern sheet DESCRIPTION OF SYMBOLS 11 ... Light 12 ... Fine uneven | corrugated pattern 13 ... Base material 14 ... Wrinkle formation layer 15 ... Raw material film

Claims (2)

A method for producing a relief forming body used for producing a mat-forming mat film,
Using a relief forming material provided with a relief forming layer made of a resin having thermoplasticity, and performing laser irradiation on the relief forming layer, thereby forming a laser uneven pattern on the relief forming layer;
Using a relief pattern sheet having a relief pattern corresponding to a fine concavo-convex pattern capable of lowering the glossiness of the surface of the printed material using the matting film for forming a wrinkle on the surface, a photothermal conversion layer that generates heat by light irradiation is provided Provided on the relief forming material or the relief pattern sheet, before or after forming the laser uneven pattern, the relief forming material and the relief pattern sheet are brought into contact so that the relief forming layer and the relief pattern are in contact with each other. In this state, by irradiating the photothermal conversion layer with light, forming the fine uneven pattern on the relief forming layer ,
The method for producing a relief forming body, wherein the laser concavo-convex pattern has larger concavo-convex portions than the fine concavo-convex pattern .   Using the relief forming body obtained by the method for producing a relief forming body according to claim 1 and a raw material film comprising a base material and a wrinkle forming layer formed on the base material, the wrinkle forming layer, A method for producing a wrinkle-forming mat film, comprising: overlaying the relief forming layer; and forming a reverse image of the concavo-convex pattern of the relief forming layer on the wrinkle forming layer.

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