JP2006306085A - Photoluminescent film and photoluminescent pattern product using same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photoluminescent film which is free from ripping off of a resin, i.e. an empty pattern, has a plurality of photoluminescent patterns excellent in brightness, is of resource saving because only a single base material is required, is extremely small with regard to a total thickness and is excellent in the integration with a transferring material or paper, and a photoluminescent pattern product using the same. <P>SOLUTION: The photoluminescent film comprises two or more pairs of photoluminescent pattern layers each contacting with a primer layer, a pair of photoluminescent pattern layer consisting of a relief forming layer and a metal thin film layer, wherein preferably each of at least two photoluminescent patterns is visible from the back side and front side, and the glass transition temperature of the primer layer is 130°C or below. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a glitter film, and more particularly, to a glitter film having at least two glitter designs and having a unique design and / or security, and a glitter pattern formation using the same. It is.

In the present specification, “ratio”, “part”, “%” and the like indicating the composition are based on mass unless otherwise specified, and the “/” mark indicates that they are integrally laminated.
“PET” is an abbreviation, functional expression, common name, or industry term for “polyethylene terephthalate”.

  (Main use) Using the glitter film of the present invention and the glitter film, the glitter pattern is formed by transferring at least a part of the plurality of glitter patterns to the transfer object by sticking or squeezing. Major uses of goods include, for example, banknotes, stock certificates, securities, certificates, gift certificates, checks, bills, admission tickets, passbooks, gift certificates, boarding tickets, car horse tickets, stamps, stamps, appreciation tickets, admission cards, Cards such as passports, tickets, cash cards, credit cards, ID cards, prepaid cards, cards such as members cards, IC cards, optical cards, various certificates such as greeting cards, postcards, business cards, driver's licenses, passports, etc. Brands such as photographic materials, cartons, cases, flexible packaging materials, bags, forms, envelopes, tags, passports, cosmetics, watches, lighters, etc. Ingredients, and the like. However, it is not particularly limited as long as it is a use that requires a special design and / or security with glitter.

(Background Art) Conventionally, gold vouchers, cards, and various certificates have qualifications and certain economic values and effects, so that they are constantly counterfeited, altered, and used illegally. In particular, the accuracy of color copiers is remarkably improved, making it easy to forge various media.
In order to prevent this, various forgery prevention means are provided. Transfer foils with relief, especially holograms and diffraction gratings, have a design that can express unique decorative images and three-dimensional images, and these holograms and diffraction gratings require advanced manufacturing techniques and cannot be easily manufactured. Therefore, it is used to improve security to prevent forgery.
However, these glitters are only on one side, and in order to further improve the design and security, they have a plurality of patterns with excellent glitter, and the total thickness is extremely thin. It is required to be excellent in unity with paper-making paper, resource-saving, and easy to manufacture.

(Prior art) Conventionally, a double-sided glitter hologram decoration that cuts a laminated film that has been laminated with two adhesive layers with two metallized holographic films on one side and an adhesive. Yarns are known (for example, see Patent Document 1). However, in order to eliminate the difference in color development and three-dimensionality between the front and back, and to prevent corrosion of the metal thin film, two films of a single design are back-to-back in order to eliminate a problem completely different from the problem of the present application It is a double-sided glittering hologram decorative yarn with a metal thin film sandwiched between films, and two of the same design are used from the examples, and it is clear that the same design is used.
Furthermore, a transfer foil having two relief forming layers on one side is known (for example, see Patent Document 2). However, this is a patent relating to a method for producing a transfer foil embossed twice with different patterns on the same surface, and there is no description regarding the double-sided glitter.
Furthermore, the present applicant has also disclosed an anti-counterfeit paper provided with an exposed portion and a covering portion that intermittently expose the glitter thread from the base paper (see, for example, Patent Document 3). However, it is possible to determine whether it is a counterfeit product without looking at the end face of the paper, and at the same time, to make it difficult for the glittering thread to peel off from the base paper.
Although embossing is sufficient with single-sided embossing, it is known that double-sided embossing may be used (see, for example, Patent Document 4). However, no further specific explanation is given regarding the double-sided embossing, and no embossing pattern is suggested. The clear meaning of double-sided embossing is not described, and it is not clear whether a relief pattern is formed on both sides.
None of the prior art describes or suggests that the front and back surfaces have different patterns of glitter. Moreover, the total thickness was also thick and lacked a sense of unity as anti-counterfeit paper.

Japanese Patent Laid-Open No. 06-257028 Japanese Patent Application Laid-Open No. 07-199781 JP-A-10-71759 JP 2001-31729 A

  Accordingly, the present invention has been made to solve such problems. Its purpose is to have multiple glittering patterns with excellent glittering properties that do not cause resin peeling or so-called “printing (pattern removal)”. It is an object of the present invention to provide a glittering film having an extremely thin total thickness and excellent in a sense of unity with a transfer target or paper-making paper, and a glittering pattern forming article using the same.

In order to solve the above-described problems, the glitter film according to the invention of claim 1 has two or more sets of the relief forming layer and the metal thin film layer as a pair of glitter pattern layers via the primer layer. It is made to have the glittering design layer of this group.
The glitter film according to the invention of claim 2 has at least two kinds of glitter patterns.
The glitter film according to the invention of claim 3 is such that the glitter pattern is a hairline pattern, a line pattern, a hologram and / or a diffraction grating.
The glitter film according to the invention of claim 4 includes at least a first metal thin film layer, a first relief forming layer having a first glitter pattern, a primer layer, a second relief forming layer having a second glitter pattern, and a first It consists of two metal thin film layers.
The glitter film according to the invention of claim 5 is such that at least two glitter patterns can be visually recognized from the front side and the back side.
The glittering film according to the invention of claim 6 is such that the glass transition temperature of the primer layer is 130 ° C. or lower.
The glittering film according to the invention of claim 7 has an overall thickness of 5 to 20 μm.
The glitter pattern formed product according to the invention of claim 8 is such that the glitter film according to any one of claims 1 to 7 is used to provide a glitter pattern in at least one part. .

According to the first aspect of the present invention, each of the plurality of patterns has a plurality of glittering patterns that do not cause peeling of the resin, so-called “printing (pattern removal)”, and one substrate is sufficient. There is provided a glittering film which is resource-saving and has an extremely thin total thickness and excellent in a sense of unity with a transfer medium or paper-making paper.
According to the second aspect of the present invention, there is provided a glittering film which is excellent in glittering property in which any of a plurality of different patterns does not cause peeling of the resin, so-called “printing (pattern removal)”.
According to the third aspect of the present invention, there is provided a glittering film having a unique design having glitter and / or excellent security.
According to the fourth aspect of the present invention, in addition to the effects of the first to third aspects, a glitter film having a plurality of glitter patterns having excellent glitter on both sides of the substrate is provided.
According to the fifth aspect of the present invention, there is provided a glitter film having a plurality of glitter patterns that are excellent in glitter that can be visually recognized from the front side and the back side.
According to the sixth aspect of the present invention, there is provided a glittering film which is excellent in glittering properties of both patterns even when long run replication is performed by the adhesive action of the primer layer.
According to the seventh aspect of the present invention, there is provided a glittering film which is excellent in a sense of unity with a transfer target or paper-making paper even when a glittering pattern formed product is formed.
According to the present invention of claim 8, there is provided a glittering pattern forming product having a plurality of glittering designs each having excellent glittering properties and excellent in a sense of unity with a transfer medium or paper-making paper. The

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view of a glitter film showing one embodiment of the present invention. FIG. 2 is a cross-sectional view of a glitter film showing one embodiment of the present invention. FIG. 4 is a cross-sectional view of a glitter film showing one embodiment of the present invention. FIG. 5 is a cross-sectional view of a glitter film showing one embodiment of the present invention. FIG. 7 is an explanatory diagram showing the visual recognition state of the pattern of the glitter film showing one embodiment of the present invention. FIG. 8 is one embodiment of the present invention. FIG. 9 is an explanatory diagram showing the visual recognition state of the pattern of the glitter film showing one embodiment of the present invention. FIG. 10 is an explanatory diagram showing one embodiment of the present invention. Plan view and sectional view of glitter pattern formation

The glitter pattern layer 20 is composed of a relief forming layer 15 and a metal thin film layer 17 provided in contact with the relief surface on which the relief forming layer 15 is formed. In combination with 17, the light is diffracted, diffused, and / or diffusely reflected to exhibit glitter.
For example, in the case of a hologram, the height of the unevenness and the interval between the protrusions and the protrusions are usually very fine, about 0.005 mm or less, and the shaping of the relief (unevenness) is an advanced technology along with the production of the plate. Cost.
That is, when a plurality of patterns are forcibly formed on a single base material 11, the first first glitter pattern layer 20A is excellent in the relief formation of the relief "a phenomenon in which the relief layer forming resin is taken on the plate", so-called Although there is no occurrence of “stenciling (pattern removal)”, when the next second glittering pattern layer 20B is formed, it is heat embossed again, so that the first metal thin film layer 17A and the second relief are formed. The adhesion of the layer 15B is not sufficient, and when the second glittering pattern 20B is formed, the “relief layer forming resin is taken on the plate” between the first metal thin film layer 17A and the second relief layer 15B, so-called “ "The plate is taken off (pattern missing)". Therefore, only the one with inferior design of the design was obtained.

Therefore, the present inventors have made further studies, and even if they have a plurality of glittering patterns, all of the plurality of patterns cause the resin to peel off, so-called “print removal”. Focusing on the fact that this is not the case, in the present invention, by providing a primer layer between the first glitter pattern layer and the second glitter pattern, it is possible to solve the peeling of the resin, so-called “print removal”. In addition, it is excellent in the sense of unity with the transfer object and the paper to be engraved, and furthermore, since only one substrate is required, resource saving can be achieved.
Conventionally, the first glitter film 10A of the first glitter pattern layer 20A, the second glitter film 10B of the second glitter pattern layer 20B, and two different kinds of glitter films 10 have been prepared. However, there was no choice but to stack this, but there was a limit to reducing the thickness, and two substrates were used, which was a waste of resources.

  Therefore, a primer layer 21 is provided between the first glitter pattern layer 20A and the second glitter pattern layer 20B, and the glass transition temperature (Tg) of the primer layer 21 is lower than the Tg of the relief forming layer 15A. By setting the temperature to 130 ° C. or lower, the adhesive action of the primer layer 21 does not cause “plate removal (pattern removal)” even in the embossing process, and the glitter is maintained. Moreover, since the base material 11 may be one sheet, the total thickness can be made extremely thin, for example, 5 to 20 μm. When the total thickness is extremely thin, there is no sense of incongruity and excellent unity even when the paper is threaded into the base paper.

(Glitter Film) The glitter film 10 of the present invention comprises a first glitter pattern layer 20A comprising a first relief forming layer 15A and a first metal thin film layer 17A, a second relief forming layer 15B and a second metal thin film. The second glittering design layer 20B composed of the layer 17B may be laminated via the primer layer 21B.
In the example shown in FIG. 1, the first glittering design layer 20 </ b> A composed of the first relief forming layer 15 </ b> A and the first metal thin film layer 17 </ b> A is formed on one surface of the substrate 11 via the primer layer 21 </ b> B. The second glitter pattern layer 20B composed of the relief forming layer 15B and the second metal thin film layer 17B and the base material are laminated on the same surface.
In the example shown in FIG. 2, the protective layer 25 is provided on the second metal thin film layer of the glitter film 10 shown in FIG. FIG. 3 also shows the first relief forming layer 15A, the first metal thin film layer 17A, the primer layer 21B, the second relief forming layer 15B, the second metal thin film layer 17B, and the adhesive layer 31 on one surface of the substrate 11. The glitter film 10 provided in sequence is bonded to the base material (base paper) 101 by the adhesive layer 31, and a glitter pattern formation product is obtained. Further, when the third bright design layer 20C is provided on the opposite surface to the base material, the example of FIG. 4 is provided, and further, the fourth bright design layer 20D may be provided. The document display of the example of FIG. If it is provided in the lower part, the example shown in FIG. 5 is obtained. As shown in FIG. 5, when the 3rd glitter design layer 20C and the 4th glitter design layer 20D contact | connect, it is preferable to provide the primer layer 21D also in between.

When three or more glitter pattern layers 20 are provided, the inner glitter pattern is hidden by the outer glitter pattern metal thin film layer, so that the outer metal thin film layer is replaced with a transparent metal thin film layer. That's fine. Here, the outer glitter design is a glitter design in which at least one of the glitter designs has no other glitter design, and the inner glitter design is the one of the glitter design. It is a glitter design in which two or more sets of other glitter designs exist on both sides. All the metal thin film layers may be transparent metal thin film layers.
Further, the symbols of the first to n-th glitter design layers 20 may be the same or different. For example, if the first glitter pattern and the second glitter pattern are the same pattern, the same image can be viewed from the front side and the back side. In the example shown in FIG. 5, if the first metal thin film layer and the third metal thin film layer are opaque metal thin film layers, and the second metal thin film layer and the fourth metal thin film layer are transparent metal thin film layers, respectively, from the front side and the back surface, respectively. Since two symbols, a total of four symbols, can be visually recognized, extremely unique design properties and / or security properties can be obtained.

  (Material and Layer Formation) Next, the material of the base material and the layer and the formation of the layer will be described. The first relief formation layer 15A, the second relief formation layer 15B, the third relief formation layer 15C, and the fourth relief formation. Layer 15D (together relief forming layer 15), first metal thin film layer 17A, second metal thin film layer 17B, third metal thin film layer 17C and fourth metal thin film layer 17D (together metal thin film layer 17), protective layer 25 The primer layer 21 </ b> B and the primer layer 21 </ b> D (primer layer 21 together) are the same in material and forming method except for the layers, and may be read as first to n. The first to n-th relief forming layers and the metal thin film layer layers may be the same material, formation method and thickness, or may be different.

(Substrate) As the material of the substrate 11, various materials can be applied depending on the use as long as they have heat resistance, mechanical strength, mechanical strength to withstand manufacturing, solvent resistance, and the like.
For example, polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyethylene terephthalate-isophthalate copolymer, or terephthalic acid-cyclohexanedimethanol-ethylene glycol copolymer, nylon (Product name) 6, Nylon (product name) 66, Nylon (product name) 610, Polyamide resin such as nylon (product name) 12, Polyolefin resin such as polyethylene, polypropylene, polybutene, or polymethylpentene, Polynorbonene Cyclic polyolefin resin such as polyvinyl chloride, vinyl resin such as polyvinyl chloride, (meth) acrylic resin such as polyacrylate, polymethacrylate, or polymethyl methacrylate, polystyrene, high impact polystyrene AS resin or styrene resin such as ABS resin, polyvinyl alcohol resin, or polyvinyl alcohol resin such as ethylene-vinyl alcohol copolymer, polycarbonate resin, saponified ethylene-vinyl acetate copolymer, polyvinyl Examples include butyral resin, polyvinyl acetate resin, and acetal resin. The substrate 11 may be a copolymer resin containing these resins as a main component, a mixture (including an alloy), or a laminate composed of a plurality of layers. The substrate 11 may be a stretched film or an unstretched film, but a film stretched in a uniaxial direction or a biaxial direction is preferable for the purpose of improving the strength. The substrate 11 is used as a film, sheet or board formed of at least one layer of these resins.

  The total thickness of the glitter film 10 of the present invention is not particularly limited. For example, the thickness can be about 1 to 200 μm. In addition, when the paper is cut into a thin width and made into a paper base as a thread, the thickness of the thread needs to be extremely thin, about 3 to 40 μm, preferably 4 to 30 μm, More preferably, it is 5-20 micrometers. If it is less than 3 μm, the mechanical strength is insufficient, and the thread is cut during cutting or paper making, and the yield is low and the productivity is low. When the thickness is 40 μm or more, the paper sheet is uneven, the threads are easily peeled off from the paper base material, and there is no sense of unity as the paper, so another glittering material is affixed to another paper. There is a disadvantage that it is easy to be counterfeited.

Most of the total thickness of the glitter film 10 is the thickness of the substrate 11, and conventionally, when a plurality of glitter patterns are formed, usually two substrates must be used. Therefore, in order to reduce the total thickness, the substrate must be used very thinly. In the layer formation process by coating and the relief molding process, high-precision equipment, delicate operation, and a lot of loss, low It was costly in yield.
In the present invention, since only one base material 11 is sufficient, it is possible to use a general-purpose base material that is suitable for good processing and inexpensive. Polyethylene terephthalate and polyethylene naphthalate having good mechanical strength and good heat resistance are suitable. For example, a substrate having a thickness of about 1 to 200 μm can be used. Moreover, when setting it as a thread | yarn, the base material with a thickness of 2-38 micrometers, Preferably 4-18 micrometers can be used. When the base material is used, it can be easily produced by conventional equipment and normal operation, and the cost is low.

(Easily Adhesive Layer) In addition, the base material 11 has an easy adhesive layer or corona discharge treatment, plasma treatment, ozone gas treatment as necessary to improve the adhesion between the layers on the surface on which the relief layer is formed. , Easy adhesion treatment such as frame treatment, pre-heat treatment, dust removal treatment, alkali treatment, etc. may be performed. Particularly preferably, by providing an easy-adhesion layer (not shown), the adhesiveness between the base material 11 and the relief layer can be improved, and the plate-cutting during the running of replication can be further suppressed. In addition, the easy-adhesion layer is synergistic with the base material 11 and is flexible even when a load of heat and / or pressure is applied, and its cushioning action reduces the load on the relief forming layer 15 and has already been applied. Deterioration of the relief shape being molded is prevented, and as a result, the glitter of the relief already shaped is maintained.
The easy adhesion layer may be, for example, a polyurethane resin, a polyester resin, a polyamide resin, an epoxy resin, a phenol resin, a polyvinyl chloride resin, a polyvinyl acetate resin, or a vinyl chloride-vinyl acetate copolymer. , Acid-modified polyolefin resins, copolymers of ethylene and vinyl acetate or acrylic acid, (meth) acrylic resins, polyvinyl alcohol resins, polyvinyl acetal resins, polybutadiene resins, rubber compounds, petroleum resins, alkyl titanes -Too compounds, polyethyleneimine compounds, isocyanate compounds, starch, casein, gum arabic, cellulose derivatives, waxes and the like can be used.

(Relief shaping) A relief shape is shaped (also referred to as replication) on the surface of the relief forming layer 15. As the shaping method, a “hot pressing method” called by those skilled in the art can be applied. First, in the hot pressing method, after forming the relief forming layer 15 on the substrate 11, a stamper (metal plate or resin plate) on which the relief is formed is pressure-bonded (so-called embossing) to the surface of the relief forming layer 15. Then, the stamper is peeled off after the relief is shaped and copied to the relief forming layer 15.
The relief shaping is the same in the material and the forming method except that the layers are different, and may be read as first to n. The first to nth reliefs may be the same or different.

(Relief forming layer) The material of the relief forming layer 15 used in the hot pressing method is a thermoplastic resin such as polyvinyl chloride, acrylic resin (eg, polymethyl methacrylate), polystyrene, polycarbonate, and unsaturated polyester, melamine, Thermosetting resins such as epoxy and urethane, polyester (meth) acrylate, urethane (meth) acrylate, epoxy (meth) acrylate, polyether (meth) acrylate, polyol (meth) acrylate, melamine (meth) acrylate, triazine acrylate An ionizing radiation curable resin such as the above, or a mixture of the above thermoplastic resin and thermosetting resin or ionizing radiation curable resin can be used.
Usually, these curable resin mixtures are formed by coating in an uncured or semi-cured state, embossed by the most appropriate process in the entire manufacturing process, and then completely cured by ionizing radiation irradiation or heat treatment. . However, it is also possible to emboss these curable resin mixtures that are relatively hardened by optimizing embossing equipment, other manufacturing equipment, and manufacturing conditions.
In particular, a thermosetting resin excellent in durability such as chemical resistance, light resistance and weather resistance, and a curable resin curable by ionizing radiation such as ultraviolet rays and electron beams are preferable. Preferably, ionizing radiation curable resins such as polyester (meth) acrylate, urethane (meth) acrylate, and epoxy (meth) acrylate can be applied, and urethane-modified acrylate resins are particularly preferable.

  A preferable example of the relief forming layer 15 is an uncured ionizing radiation curable resin composition mainly composed of a urethane-modified acrylic resin represented by the general formula (a). Specifically, the photocurable resin composition disclosed in Japanese Patent Application Laid-Open No. 2000-273129 by the present applicant can be applied, and the photocurable resin composition S described in the above specification can be used in the present specification. It is also used in the examples and is described as “ionizing radiation curable resin composition S”.

（ここで、６個のＲ₁は夫々互いに独立して水素原子またはメチル基を表わし、Ｒ₂は炭素数が１〜２０個の炭化水素基を表わす。ｌ、ｍ、ｎ、ｏ及びｐの合計を１００とした場合に、ｌは２０〜９０、ｍは０〜８０、ｎは０〜５０、ｏ＋ｐは１０〜８０、ｐは０〜４０の整数である。ＸおよびＹは直鎖状または分岐鎖状のアルキレン基を表わし、Ｚはウレタン変性アクリル樹脂を改質するための基を表し、好ましくは嵩高い環状構造の基を表わす。）

(Here, six R _{1 s} each independently represent a hydrogen atom or a methyl group, and R ₂ represents a hydrocarbon group having 1 to 20 carbon atoms. Each of l, m, n, o and p L is 20 to 90, m is 0 to 80, n is 0 to 50, o + p is 10 to 80, p is an integer of 0 to 40, and X and Y are linear or Represents a branched alkylene group, Z represents a group for modifying a urethane-modified acrylic resin, and preferably represents a group having a bulky cyclic structure.)

  Another preferred relief forming layer 15 is a reaction product of an isocyanate compound having a melting point of 40 ° C. or higher and a (meth) acrylic compound capable of reacting with an isocyanate group, and has a softening point of 40 ° C. or higher. It is a resin containing things.

  That is, (1) a reaction product of an isocyanate compound having a melting point of 40 ° C. or higher and a (meth) acryl compound having a (meth) acryloyl group and capable of reacting with the isocyanate group, and having a softening point of 40 (2) an isocyanate compound having a melting point of 40 ° C. or higher, a (meth) acrylic compound having a (meth) acryloyl group and capable of reacting with the isocyanate group, and a (meth) acryloyl group It is a reaction product of a compound that does not have a chemical reaction and can react with an isocyanate group and has a softening point of 40 ° C. or higher. The isocyanate compound is a compound having an isocyanate group bonded to a non-aromatic hydrocarbon ring, a trimer of isophorone diisocyanate, or a reaction product of isophorone diisocyanate and an active hydrogen-containing compound, and (meth) The acrylic compound is preferably (meth) acrylic acid or a (meth) acrylate having a hydroxyl group. Specifically, a photocurable resin disclosed in Japanese Patent Application Laid-Open No. 2001-329031 can be applied. (Details are separately described in Examples as the ionizing radiation curable composition M.)

  (Formation of relief forming layer) As a method of providing the relief forming layer 15, for the above-mentioned materials, for example, ionizing radiation curable resins of urethane-modified acrylic resins, a photopolymerization initiator, photosensitization may be used as necessary. Agents, photopolymerization accelerators, polyfunctional monomers and oligomers, mold release agents, polymerization inhibitors, viscosity modifiers, surfactants, antifoaming agents, and other auxiliary agents, as well as silicone, styrene-butadiene rubber, etc. A molecular body etc. may be mix | blended and these are melt | dissolved or disperse | distributed to an organic solvent, or it is set as the relief forming layer 15 composition (ink) of a non-solvent form without adding a solvent. The relief forming layer 15 composition (ink) may be applied by, for example, a roll coating method, a gravure coating method, or any other known coating method or printing method, and may be dried as necessary. The thickness of the relief forming layer 15 is usually about 0.1 to 10 μm, preferably 0.2 to 5 μm, and more preferably 0.5 to 2 μm. If the thickness is less than 0.5 μm, the glitter (brightness) is remarkably reduced.

(Relief shape) The relief shape is a concavo-convex shape and is not particularly limited, but preferably has a fine concavo-convex shape and exhibits functions such as light diffusion, light scattering, light reflection, and light diffraction. For example, Fourier Conversion, a lenticular lens, a light diffraction pattern, and a moth eye are formed. Further, although there is no light diffraction function, a hairline pattern, mat pattern, line pattern, interference pattern, non-colored pattern, etc., that expresses a unique glitter may be used. As the light diffraction concavo-convex pattern, a hologram or diffraction grating in which interference fringes due to light interference between object light and reference light are recorded in a concavo-convex pattern can be applied. Holograms include laser reproduction holograms such as Fresnel holograms, white light reproduction holograms such as rainbow holograms, color holograms utilizing these principles, computer generated holograms (CGH), and holographic diffraction gratings.
The design described in this specification refers to a design formed by combining one or more of these various concavo-convex patterns. For example, a text pattern such as “abc” or “Security”, a sleek pattern, a polka dot pattern, and the like. A geometric pattern called as well as a pattern formed by a combination of a pattern such as a flower or a bird, which was created by simulating a pattern such as a flower, a bird, etc. were visualized by a combination of the above-mentioned hologram or diffraction diffraction pattern consisting of a diffraction grating. Say a picture. Moreover, a multiple symbol means the symbol which cannot be formed only by using these symbols once and once, and usually refers to a symbol produced by using two or more symbols multiple times. However, for example, even when “Security” can be observed from both the front and back by bonding the vapor-deposited surfaces of the glitter film having a pattern observed as “Security” from the base material surface, the plural design glitter of the present invention is used. It is a sex film.

  Examples of the diffraction grating include a holographic diffraction grating using a hologram recording means. In addition, an arbitrary diffraction light can be obtained based on a calculation by mechanically creating a diffraction grating using an electron beam drawing apparatus or the like. A diffraction grating can also be mentioned. Further, a mechanical cutting method may be used. These holograms and / or diffraction gratings may be recorded single or multiple, or may be recorded in combination. These original plates can be prepared by known materials and methods. Usually, a laser beam interference method using a glass plate coated with a photosensitive material, an electron beam drawing method on a glass plate coated with an electron beam resist material, a machine A cutting method can be applied.

  (Relief shaping) The relief shape is shaped (also referred to as replication) on the surface of the relief forming layer 15. In the hot pressing method, a stamper (metal plate or resin plate) on which a relief is formed is pressure-bonded to the surface of the relief forming layer 15 (so-called embossing), and the relief is applied to the relief forming layer 15. After stamping and replicating, the stamper is peeled off. It is also possible to form a metal thin film layer 17 on the surface of the relief forming layer 15 and then press and mold a stamper on the surface. Depending on the material of the relief forming layer, the relief is replicated by irradiating ionizing radiation during embossing and then peeling the stamper. Commercial duplication can be carried out in a long form, allowing continuous duplication work. Further, a relief can be reproduced more commercially by using a cylindrical stamper prepared by attaching a stamper to a cylinder or by directly engraving a relief on the cylinder. This relief forming layer was also effective in the roll type continuous replication method.

  (Relief Curing) When an ionizing radiation curable resin is used as the relief forming layer 15, the ionizing radiation curable resin is cured by irradiating ionizing radiation during or after embossing with a stamper. The ionizing radiation curable resin becomes an ionizing radiation curable resin (relief forming layer 15) when cured (reacted) by irradiation with ionizing radiation after the relief is formed. Ionizing radiation may be classified by the quantum energy of electromagnetic waves, but in this specification, all ultraviolet rays (UVA, UV-B, UV-C), visible light, gamma rays, X-rays, and electron beams are classified. It is defined as including. Accordingly, ultraviolet (UV), visible light, gamma ray, X-ray, electron beam, or the like can be applied as ionizing radiation, but ultraviolet (UV) is preferable, and ultraviolet having a wavelength of 300 to 400 nm is optimal. An ionizing radiation curable resin that is cured by ionizing radiation may contain a photopolymerization initiator and / or a photopolymerization accelerator in the case of ultraviolet curing, and may not be added in the case of high energy electron beam curing. Can be cured even with thermal energy. When a thermosetting resin is used as the relief forming layer 15, it may be cured by aging under a temperature and humidity environment according to the curing conditions of the thermosetting resin to be used.

(Metal thin film layer) The metal thin film layer 17A and the metal thin film layer 17B (metal thin film layer 17) are formed by providing the metal thin film layer 17 on the relief surface of the relief forming layer 15 provided with a predetermined relief structure. Since the reflection and / or diffraction effect is enhanced, it is not particularly limited as long as it is higher than the reflectance of the relief forming layer 15. For example, a metal or a transparent metal compound having a difference in refractive index can be applied. The metal thin film 17 can be formed on the relief forming layer 15 before providing the relief structure. That is, it is possible to form a relief after forming the metal thin film layer 17 by appropriately selecting the material and stamper of each layer.
The metal used for the metal thin film layer 17 is a metal element thin film that has a metallic luster and reflects light, and a metal thin film such as Cr, Ni, Ag, Au, and Al can be applied. The formation of the light-reflective metal thin film can be obtained by a vacuum thin film method such as a vacuum deposition method, a sputtering method, or an ion plating method so as to have a thickness of about 10 to 2000 nm, preferably 20 to 1000 nm. However, it can also be formed by plating. If the thickness of the metal thin film layer 17 is less than this range, light is transmitted to some extent and the effect is reduced, and if the thickness is more than that, the reflection effect is not changed, which is wasteful in cost.

Further, by using a metal compound having a substantially colorless and transparent hue and an optical refractive index different from that of the relief forming layer as the metal thin film layer 17, it is possible to obtain brightness of holograms and the like even though there is no metallic luster. Therefore, it is possible to produce a glittering film such as a transparent hologram.
Examples of the transparent metal or metal compound include a thin film having a higher refractive index than that of the relief forming layer 15 and a thin film having a lower refractive index. Examples of the former include ZnS, TiO ₂ , Al ₂ O _3. , Sb ₂ S ₃ , SiO, SnO ₂ , ITO and the like, and examples of the latter include LiF, MgF ₂ and AlF ₃ . Preferably, it is a metal oxide or nitride, specifically, Be, Mg, Ca, Cr, Mn, Cu, Ag, Al, Sn, In, Te, Fe, Co, Zn, Ge, Pb, Cd , Bi, Se, Ga, Rb, Sb, Pb, Ni, Sr, Ba, La, Ce, Au, and other oxides or nitrides, and the like may be a mixture of two or more thereof.
Also, a general light-reflective metal thin film such as aluminum can be used when it has a thickness of 200 mm or less. As with the metal thin film, the transparent metal compound is formed on the relief surface of the relief forming layer 15 by vapor deposition, sputtering, ion plating, CVD, or the like so as to have a thickness of about 10 to 2000 nm, preferably 20 to 1000 nm. It may be provided by a vacuum thin film method or the like. Furthermore, you may use the transparent synthetic resin from which the refractive index of light differs from the relief forming layer 15, and when the refractive index of the adhesive layer 31 or the protective layer 25 material and the relief forming layer 15 material is sufficiently different, The adhesive layer 31 and the protective layer 25 can also serve as the metal thin film layer (reflective layer) 17.

  In particular, for example, as shown in FIG. 5, in the case of having two designs of the first bright design layer 20A and the third bright design layer 20C, if one of the metal thin film layers 17 is a transparent thin film, When viewed from one side of the material, two glitter patterns can be seen at the same time. However, it is not essential, and both the metal thin film layers 17 may be opaque metal thin films, and it is possible to improve the security by visualizing them by breaking them or making one of them brittle.

(Primer layer) The material of the primer layer 21 may be any material that improves the adhesion between the metal thin film layer forming material and the relief material, and is preferably a material lower than the Tg of the relief forming layer 15A. By lowering the Tg before curing of the normal relief forming layer 15 to 130 ° C. or lower, the adhesion between the metal thin film layer and the relief layer can be improved, and the plate taking off during running can be suppressed. Although there is no lower limit to the Tg of the vapor deposition layer and the relief forming layer 15, it is preferably higher than room temperature when considering the necessity of winding and storing the primer coated product. Moreover, you may consist of two or more primer layers, such as a primer layer excellent in adhesiveness with a metal thin film layer forming material, and a primer layer excellent in adhesiveness with a relief layer material.
In addition, the primer layer 21 is flexible because it is lower than the Tg of the relief forming layer 15 even when heat and / or pressure is applied, and the cushion action reduces the load on the relief forming layer 15. Deterioration of the already shaped relief shape is prevented, and as a result, the glitter of the already shaped relief is maintained.

  Examples of the material of the primer layer 21 include polyurethane resins, polyester resins, polyamide resins, epoxy resins, phenol resins, polyvinyl chloride resins, polyvinyl acetate resins, and vinyl chloride-vinyl acetate copolymers. , Acid-modified polyolefin resins, copolymers of ethylene and vinyl acetate or acrylic acid, (meth) acrylic resins, polyvinyl alcohol resins, polyvinyl acetal resins, polybutadiene resins, rubber compounds, petroleum resins, alkyl titanes -Too compounds, polyethyleneimine compounds, isocyanate compounds, starch, casein, gum arabic, cellulose derivatives, waxes and the like can be used. Polyethylene resin, acrylonitrile-butadiene-styrene (ABS) resin, acrylonitrile-styrene (AS) resin, cellulose acetate resin, ionomer resin, polyacrylonitrile resin, these resins can be used alone or in combination of two or more. . A cross-linking agent such as isocyanate may be added as appropriate to improve the adhesion.

In addition to the primer layer formation, the adhesion between the base material and the relief layer may be increased by surface treatment such as corona discharge treatment or plasma treatment, if necessary. That is, in order to improve the adhesion between the layers on the surface on which the relief layer is formed, corona discharge treatment, plasma treatment, ozone gas treatment, flame treatment, pre-heat treatment, dust removal treatment, alkali treatment, etc., as necessary Easy adhesion treatment may be performed.
The primer layer 21 may be applied as a melt or a solution by a known method, or may be bonded after being formed into a film.

(Pluralization of glitter pattern) The glitter film 10 of the present invention is obtained by repeating the formation and shaping of each layer described above.
In the glitter film 10 of the present invention shown in FIG. 1, the first relief forming layer 15A is formed on one surface of the substrate 11, the first glitter pattern is shaped, and the first metal thin film layer 17A is formed. Furthermore, a primer layer 21B is formed on the surface of the first metal thin film layer 17A, a second relief forming layer 15B is formed, a second glitter pattern is formed, and the second metal thin film layer 17B is formed. That's fine.
Further, a third relief forming layer 15C is further formed on the opposite surface of the glittering film 10 of the present invention shown in FIG. 1 with respect to the first metal thin film layer 17A and the substrate 11 to impart the third glittering pattern. When the third metal thin film layer 17C is formed, the glitter film 10 shown in FIG. 4 is obtained and has three glitter patterns.
Furthermore, a primer layer 21D is further formed on the surface of the third metal thin film layer 17C of the glitter film 10 shown in FIG. 4, a fourth relief forming layer 15D is formed, a fourth glitter pattern is shaped, and a transparent When the fourth metal thin film layer 17D is formed, the glittering film 10 shown in FIG. 5 is obtained and has four glittering patterns.

The above-described plural design will be further described. Thus, the glitter films 10A and 10B are obtained. Further, in the present invention, by repeating the steps of producing the relief forming layer 15, the relief shape 16 and the metal thin film layer 17 in accordance with the layer configuration, a multi-design glitter film having a plurality of designs is produced. The multi-design glittering thread 10 of the present invention can be obtained by appropriately slitting the conductive film.
As described above, when a multi-pattern glittering film having a plurality of designs is produced by repeating the steps of producing the relief forming layer 15, the relief shape 16 and the metal thin film layer 17 on one base material, In the step of producing the relief shape 16 in the relief forming layer, it is necessary not to destroy the relief shape 16 produced earlier.
Therefore, the glass relief temperature of the first relief forming material formed earlier is Tg1 (u), the glass transition temperature after curing of this material is Tg1 (h), and the second relief forming layer formed later is produced. When the glass transition temperature of the material is Tg2 (u) and the glass transition temperature after curing of this material is Tg2 (h), the first relief forming layer is cured before the relief of the second relief forming layer is formed. In addition, it is preferable that Tg1 (h)> Tg2 (u) is satisfied.
When a general thermoplastic resin is used as the material for the first relief forming layer and the material for the second relief forming layer, Tg1 (u) = Tg1 (h) = Tg1, and Tg2 (u) = When Tg2 (h) = Tg2, it is preferable that there is a relationship of Tg1> Tg2. In the case where the third, fourth and further plural relief forming layers are provided, Tg1>Tg2>Tg3> Tg4, that is, Tg1 (u)> Tg2 (u)> Tg3 (u)> Tg4 (u) Preferably there is.
However, when a curable resin is used, it is not particularly preferable that the relationship of this formula (Tg1> Tg2) is established. If a curable resin is used as the resin to be relief formed earlier, even if the Tg1 (u) before curing is low, this resin is cured after the relief formation, so that the relief is later formed on the second relief forming layer. Since it is easy to make Tg1 (h) high enough at the time of doing, it is preferable. Conversely, if a curable resin is used as the resin for relief formation later, the temperature at which the relief is formed on the second relief forming layer is sufficiently lowered, and after the second relief is formed, this resin is reduced to Tg2 (h). Curing is preferable because the durability of the product can be sufficiently increased. That is, by using a curable resin that is not cured during relief molding and can be cured after relief molding, the glass transition temperature of the resin when uncured is Tg1 (u) = Tg2 (u), or Tg1 Even if the relationship (u) <Tg2 (u) is satisfied, the relationship Tg1 (h)> Tg2 (u) can be established, and the relief formed later without destroying the shape of the relief formed earlier. Can be produced. In order to cure such a relief resin in an optimum process among all processes, an ionizing radiation curable resin is particularly preferable as the relief forming material. The same applies to the case of having a plurality of patterns of three or more layers.
If the relationship of the glass transition temperature shown above is not satisfied, it will be difficult to maintain the relief shape, cracks, whitening, etc. will occur, and sufficient brightness as a glittering multiple pattern will not be obtained.
However, the above glass transition temperature is a temperature at which the loss tangent (tan δ) in the dynamic viscoelasticity measurement has a maximum value is defined as the glass transition temperature of the resin. The measurement method of viscoelasticity uses ARES manufactured by Rheometrics as a measuring instrument, and the measurement conditions are: parallel plate 10 mmΦ, strain 1%, amplitude 1 Hz, heating rate 2 ° C./min. Then, the temperature of the resin of the sample is raised from 30 ° C. to 200 ° C. In general, the storage elastic modulus G ′ is an elastic component, which is generated by the generation of a structure such as a coil vibration or an aggregate structure in a polymer, and the loss elastic modulus G ″ is a viscous component, which is a static shear. It is equivalent to stress.tan δ is obtained by G ″ / G ′ and is an index of how much energy is absorbed when the material is deformed.
The glitter film 10 of the present invention has a plurality of glitter patterns, all of which have excellent glitter, a single substrate is sufficient for resource saving, and the total thickness can be made extremely thin. The glitter film 10 is excellent in a sense of unity with a transfer target or paper-making paper. Cost can also be reduced.

(Other Layers) In addition, the glitter film 10 of the present invention has a protective layer, a colored layer, magnetic printing, a layer between layers and / or a surface as necessary, within a range where the glitter pattern can be observed. And / or other layers, such as a resin layer, and / or printing, an easily bonding layer, etc. may be provided. Furthermore, an easy-adhesion layer may be provided on at least one surface of the glitter film 10, and as the material of the easy-adhesion layer, hydrophilic materials such as polyvinyl alcohol resins, acrylic resins, and cellulose resins are used. Etc. are preferable.
As the protective layer, the thermoplastic resin such as acrylic resin, and the thermosetting resin such as unsaturated polyester, melamine, and epoxy urethane (meth) acrylate are used in the same manner as the constituent resin described in the relief forming layer. Cured, UV-curable resin such as a composition obtained by adding a sensitizer to a mixture of unsaturated ethylene monomer and unsaturated ethylene oligomer as appropriate, or the above thermoplastic resin and heat Mixtures of curable resins and thermoformable materials having radically polymerizable unsaturated groups can be used. In particular, thermosetting resins excellent in durability such as chemical resistance, light resistance and weather resistance, and ionizing radiation curable resins such as ultraviolet rays and electron beams are preferable.
(Other Supporting Substrate) Another substrate or layer may be further provided on the multi-pattern glittering film of the present invention obtained as described above. For example, as shown in FIG. 3, the metal surface can be protected by providing the support base material 101 via the adhesive layer 31 on the surface of the metal thin film layer 17B. As the support substrate, the materials described for the substrate 11 are used. These synthetic resin films and paper substrates may be laminated by a known method such as a dry lamination method, an extrusion lamination method, an adhesive lamination method, or a thermal lamination method. Moreover, it can be set as the adhesive label excellent in the designability and security property by using the support base material which carried out the mold release process as this support base material.
(Adhesive) The adhesive used for the adhesive layer 31 may be appropriately selected in accordance with the above-described conventionally known lamination method. For example, when laminating by the dry lamination method, an adhesive that is cured by heat or ionizing radiation such as ultraviolet rays or electron beams can be applied. Thermosetting adhesives include two-component curable urethane adhesives, polyester urethane adhesives, polyether urethane adhesives, acrylic adhesives, polyester adhesives, polyamide adhesives, and polyvinyl acetate adhesives. An adhesive, an epoxy adhesive, a rubber adhesive, etc. can be applied. Of these, a two-component curable urethane-based adhesive is preferable. After the adhesive dispersed or dissolved in the solvent is applied and dried, the base material and the glitter film are laminated and laminated, and then the adhesive is cured by aging at 30 to 120 ° C. for several hours to several days. . An adhesive that can be cured at as low a temperature as possible so as not to destroy the already formed relief shape, preferably an adhesive that can be cured at a temperature lower than the glass transition temperature Tg (h) of the shaped relief-forming layer material, Adhesives that can be cured at temperatures lower than Tg (u) are particularly preferably used. As a film thickness of this contact bonding layer, it is about 0.1-20 micrometers (dry state), Preferably it is 1.0-5.0 micrometers.

  (Plurality of glitter design products) The glitter design product 100 of the present invention uses the glitter film 10 of the present invention to attach and bond at least one part of the glitter design to a transfer object. It can be made by a papermaking method using paper making, and has a plurality of designs with excellent glitter, and can have unique design and security.

As an example of the glitter pattern forming product 100 of the present invention shown in FIG. 10, a thread formed by narrowly slitting the glitter film 10 of the present invention is formed on the surface of at least one surface of the base paper. An example of a gift certificate using anti-counterfeit paper and using the anti-counterfeit paper will be shown. The total thickness of the thread is extremely thin, and it is excellent in unity with the transfer medium and paper-making paper, and is resource-saving and easy to manufacture. One or a plurality of threads may be used for the anti-counterfeit paper.
10B is an example of only one side when it is provided on the same side as the securities printing unit, and FIG. 10C is an example when it is provided on the opposite side of the securities printing unit. Also good.

  (Papermaking method) Next, the papermaking method will be described. When the glitter film 10 of the present invention has a narrow stripe shape, those skilled in the papermaking industry call it a thread. The glitter film 10 of the present invention is slit into a narrow width of about 0.5 to 30 mm, preferably 1 to 10 mm, and the thread is made into the base paper 101.

(Base Paper) The base paper 101 of the anti-counterfeit paper is not particularly limited as long as it has excellent surface smoothness and heat resistance and has an appropriate strength and thickness. Paper such as paperboard and cardboard can be used. High-quality paper and coated paper having a basis weight of 100 to 200 g / m ² and excellent printability and transferability are preferred. The base paper 101 is manufactured by embedding a thread having a width of about 0.5 to 30 mm, preferably 1 to 10 mm, slit into a narrow width. In other words, wood pulp such as softwood bleached kraft pulp (NBKP), hardwood bleached kraft pulp (LBKP), softwood bleached sulfite pulp (NBSP), thermomechanical pulp (TMP), etc. and non-wood pulp made from hemp, cotton, and straw Etc. are mixed and beaten appropriately, and this is filled with filler, dry paper strength enhancer, wet paper strength enhancer, sizing agent, fixing agent, yield improver, freeness improver, antifoaming agent, dye, coloring pigment, fluorescent A suitable freeness is usually added to 400 to 250 ml C.I. S. F. Prepare a paper stock adjusted to. The paper stock is manufactured by using a well-known paper machine such as a long paper machine or a circular paper machine while feeding a narrow-width thread, and machine calendar and super calendar processing is performed as necessary. To do.

  (Observation) The glittering pattern forming product 100 of the present invention may be provided with a printed pattern or the like in addition to the above configuration. Further, the thread may be embedded in the base paper, or may be half-embedded or on the surface if it is sufficiently adhered. Further, it may be partially exposed on the surface of the base paper. Further, the base paper may be partially thinned and embedded. In particular, with the half-embedded or partially thin base paper 101, the glitter pattern on both sides of the glitter film 10 of the present invention can be sufficiently visually recognized. Further, in the case of burying or half-embedding, at least one of the glittering patterns cannot be visually recognized or is difficult to visually recognize, but it is within the scope of the present invention because it can be visually recognized by peeling and observing as necessary.

  (Production) Production of the glittering film 10 of the present invention can be carried out easily and at low cost because any process can use existing equipment and technology. In addition, since both the process of producing the glitter pattern forming product 100 of the present invention can use existing equipment and technology, it is easy to manufacture and can be manufactured at low cost.

EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further in detail, it is not limited to this.
In the following examples, characters such as negative patterns and clear character strings “abc” and “xyz” are quoted so as to make it easy to explain the state of visual recognition from the front and back. In both cases, it is within the scope of the present invention if two or more kinds of symbols can be visually recognized from the front and back.
In the following embodiments, for example, when the character string “abc” is viewed from the air interface, a character string pattern that can be decoded as a normal character string “abc” is referred to as a positive pattern. Conversely, a character string pattern that cannot be decoded as a normal character string “abc” is called a negative pattern.

Example 1
(Preparation of ionizing radiation curable resin composition M) First, the reaction product (A) was produced by the following procedure. A reactor equipped with a stirrer, reflux condenser, dropping funnel and thermometer was charged with 206.1 g of ethyl acetate and 133.5 g of isophorone diisocyanate trimer (HULS product, VESTANAT T1890, melting point 110 ° C.), 80 The solution was heated to 0 ° C. and dissolved. After blowing air into the solution, 0.38 g of hydroquinone monomethyl ether, 249.3 g of pentaerythritol triacrylate (product of Osaka Organic Chemical Industry Co., Ltd., Viscoat 300) and 0.38 g of dibutyltin dilaurate were charged. After reacting at 80 ° C. for 5 hours, 688.9 g of ethyl acetate was added and cooled. As a result of infrared absorption spectrum analysis, it was confirmed that the obtained reaction product solution had extinguished isocyanate groups. The softening temperature of what distilled ethyl acetate from the reaction product liquid was 43 degreeC.
An ionizing radiation curable resin composition M was prepared by adding the reaction product (A), a film-forming resin, a photopolymerization initiator, and a solvent in the following composition.
・ <Ionizing radiation curable resin composition M>
Reaction product (A) 24 parts by weight Film-forming resin (methacrylic resin: Kuraray product Parapet GF) 6 parts by weight Photopolymerization initiator (Irgacure 184) 0.9 parts by weight Ethyl acetate 70 parts by weight Thickness as substrate 11 A 6 μm Lumirror 6CF53 (manufactured by Toray Industries Inc., trade name of PET film) was used. The above-mentioned ionizing radiation curable resin composition M was applied to one surface of the substrate 11 with a gravure reverse coater and dried at 100 ° C. to form a relief forming layer 15A having a thickness of 1 μm. Next, a stamper duplicated by the 2P method from a rainbow hologram (pattern 1: repeated pattern (negative pattern) of the character string “abc”) by the two-beam method is attached to the relief forming layer surface on the embossing roller of the duplicating apparatus. A relief formed of a fine concavo-convex pattern was formed by heat pressing (embossing) with an opposing roller. Immediately after shaping, it was cured by irradiating with ultraviolet rays using a high-pressure mercury lamp. An aluminum thin film having a thickness of 500 nm was formed on the relief surface of the relief forming layer 15A by a vacuum deposition method to obtain a metal thin film layer 17A.
Byron 200 (manufactured by Toyobo Co., Ltd., polyester resin product name) is applied to the surface of the metal thin film layer 17A with a gravure reverse coater and dried at 100 ° C. to form a primer layer layer 21B having a thickness of 0.5 μm. Then, the ionizing radiation curable resin composition M was further applied to the surface of the primer layer 21B with a gravure reverse coater and dried at 100 ° C. to form a relief forming layer 15B having a thickness of 1 μm. Next, a stamper copied by the 2P method from a rainbow hologram (pattern 2: repeated pattern (positive pattern) of the character string “xyz”) by the two-beam method is attached to the relief forming layer surface on the embossing roller of the copying apparatus. A relief formed of a fine concavo-convex pattern was formed by heat pressing (embossing) with an opposing roller. Immediately after shaping, it was cured by irradiating with ultraviolet rays using a high-pressure mercury lamp. An aluminum thin film (metal thin film layer 17B) having a thickness of 500 nm was formed on the relief surface of the relief forming layer 15B by vacuum deposition. Thus, the glitter film 10 of Example 1 was obtained.

  Example 2 A glittering film 10 was obtained in the same manner as in Example 1 except that a 12 μm PET film was used as the substrate.

  Example 3 A glittering film 10 was obtained in the same manner as in Example 1 except that a 16 μm PET film was used as the substrate.

  (Example 4) A glittering film 10 was obtained in the same manner as in Example 1 except that the ionizing radiation curable resin composition S was used as the ionizing radiation curable resin composition.

  Example 5 A glittering film 10 was obtained in the same manner as in Example 4 except that a 12 μm PET film was used as the substrate.

Example 6 A glittering film 10 was obtained in the same manner as in Example 4 except that a 16 μm PET film was used as the substrate.
(Example 7) The above-mentioned ionizing radiation curable resin composition S was applied to the surface of the metal thin film layer 17B of the glitter film 10 of Example 1 with a gravure reverse coater, dried at 100 ° C, and a thickness of 0. A protective layer 25 of 5 μm was formed.
(Example 8) A two-component curable polyurethane adhesive was applied to the surface of the metal thin film layer 17B of the glitter film 10 of Example 1 by a gravure coating method so that the thickness after drying was 1.5 µm and dried. Later, Lumirror 6CF53 (product name: PET film product name, manufactured by Toray Industries, Inc.) having a thickness of 6 μm was used as the base material 101, and the base material 101 and the polyurethane adhesive were overlapped and pressurized, and then allowed to stand at 40 ° C. for 3 days. Thus, the glittering film of Example 8 was obtained.

  (Evaluation) When the glitter films 10 of Examples 1 to 8 were observed through the base material (PET film), a repeated pattern (positive pattern) of the character string “abc” was observed as shown in FIG. . When observed from the opposite side, a repeated pattern (positive pattern) of the character string “xyz” was observed. A plate was not taken and a good duplicate was obtained.

Example 9 Lumirror 6CF53 (manufactured by Toray Industries, Inc., trade name of PET film) having a thickness of 6 μm was used as the substrate 11. The above-mentioned ionizing radiation curable resin composition M was applied to one surface of the substrate 11 with a gravure reverse coater and dried at 100 ° C. to form a relief forming layer 15A having a thickness of 1 μm. Next, a stamper duplicated by the 2P method from a rainbow hologram (pattern 1: repeated pattern (negative pattern) of the character string “abc”) by the two-beam method is attached to the relief forming layer surface on the embossing roller of the duplicating apparatus. A relief formed of a fine concavo-convex pattern was formed by heat pressing (embossing) with an opposing roller. Immediately after shaping, it was cured by irradiating with ultraviolet rays using a high-pressure mercury lamp. An aluminum thin film having a thickness of 500 nm was formed on the relief surface of the relief forming layer 15A by a vacuum deposition method to obtain a metal thin film layer 17A.
Byron 200 (manufactured by Toyobo Co., Ltd., polyester resin product name) is applied to the surface of the metal thin film layer 17A with a gravure reverse coater and dried at 100 ° C. to form a primer layer 21B having a thickness of 0.5 μm. Then, the ionizing radiation curable resin composition S was further applied to the surface of the primer layer 21B with a gravure reverse coater and dried at 100 ° C. to form a relief forming layer 15B having a thickness of 1 μm. Next, a stamper copied by the 2P method from a rainbow hologram (pattern 2: repeated pattern (positive pattern) of the character string “xyz”) by the two-beam method is attached to the relief forming layer surface on the embossing roller of the copying apparatus. Then, a relief (positive pattern) composed of a fine concavo-convex pattern was formed by heat pressing (embossing) with an opposing roller. Immediately after shaping, it was cured by irradiating with ultraviolet rays using a high-pressure mercury lamp. A titanium oxide thin film having a thickness of 300 nm was formed on the relief surface of the relief forming layer 15B by a vacuum deposition method to obtain a metal thin film layer 17B. Thus, the glitter film 10 of Example 9 was obtained.
(Evaluation) When the glitter film 10 of Example 9 was observed through the base material (PET), a repetitive pattern (positive pattern) of the character string “abc” was observed as shown in FIG. When observed from the opposite side, a repetitive pattern (negative pattern) of the character string “abc” was observed over a repetitive pattern (positive pattern) of the character string “xyz”. Two patterns on the front and one pattern on the back were observed, and the hologram was very high in design. A plate was not taken and a good duplicate was obtained.

(Example 10) Furthermore, in the base material 11 of the glitter film 10 of Example 9, the above-mentioned ionizing radiation curable resin composition M was applied to the PET surface on the opposite side of the first metal thin film layer 17A with a gravure reverse coater. It was coated and dried at 100 ° C. to form a third relief forming layer 15C having a thickness of 1 μm. Next, a stamper duplicated by the 2P method from a rainbow hologram (pattern 3: repeated pattern (positive pattern) of the character string “ghi”) by the two-beam method is attached to the relief forming layer surface on the embossing roller of the duplicating apparatus. Then, a relief consisting of a fine uneven pattern (positive pattern) was formed by heat pressing (embossing) with an opposing roller. Immediately after shaping, it was cured by irradiating with ultraviolet rays using a high-pressure mercury lamp. An aluminum thin film having a thickness of 500 nm was formed on the relief surface of the third relief forming layer 15C by a vacuum deposition method to obtain a metal thin film layer 17C.
(Evaluation) When the glitter film 10 of Example 10 was observed from the third relief forming layer 15C side, a repetitive pattern (positive pattern) of the character string “ghi” was observed as shown in FIG. When observed from the opposite side, a repetitive pattern (negative pattern) of the character string “abc” was observed over a repetitive pattern (positive pattern) of the character string “xyz”. A plate was not taken and a good duplicate was obtained.

(Example 11) Byron 200 (manufactured by Toyobo Co., Ltd., product name of polyester resin) was applied to the surface of the third metal thin film layer 17C of the glitter film 10 of Example 10 at 100 ° C. A second primer layer 21D having a thickness of 0.5 μm is formed by drying, and the surface of the second primer layer 21D is further coated with the ionizing radiation curable resin composition M by a gravure reverse coater at 100 ° C. By drying, a fourth relief forming layer 15D having a thickness of 1 μm was formed. Next, a stamper copied by the 2P method from a rainbow hologram (pattern 4: repetitive pattern of a pattern “star”) by the two-beam method is attached to the embossing roller of the copying apparatus on the surface of the relief forming layer, and the opposite roller A relief formed of a fine concavo-convex pattern was formed by heating and pressing (embossing). Immediately after shaping, it was cured by irradiating with ultraviolet rays using a high-pressure mercury lamp. A transparent titanium oxide thin film having a thickness of 300 nm was formed on the relief surface of the fourth relief forming layer 15D by a vacuum deposition method to form a fourth metal thin film layer 17D.
(Evaluation) When the glittering film 10 of Example 11 is observed from the fourth relief forming layer 15D side, as shown in FIG. 9, the repeated pattern of the character string “ghi” is passed over the repeated pattern of the pattern “star” ( A positive pattern) was observed. When observed from the opposite side, a repetitive pattern (negative pattern) of the character string “abc” was observed over a repetitive pattern (positive pattern) of the character string “xyz”. A plate was not taken and a good duplicate was obtained.

(Examples 12 to 20) The glitter film 10 obtained in Examples 1 to 11 is incorporated into a paper stock. 20 parts by mass of NBKP and 80 parts by mass of LBKP were beaten, and 10 parts by mass of white clay, 0.3 part by mass of a paper strength enhancer, 1.0 part by mass of a sizing agent and an appropriate amount of a sulfuric acid band were added to prepare a paper material. Using the stock, two-layer papermaking is carried out at a papermaking speed of 50 m / min with a two-tank circular paper machine. At this time, the thread manufactured as described above was flowed to a predetermined position with the hologram surface as the surface. Next, the wet paper was dehydrated according to a known general method and dried with a drier, whereby the thread adhered to the base paper 101, and the anti-counterfeit paper which is the glitter pattern forming product 100 of the present invention was manufactured.
The obtained anti-counterfeit paper had the thread embedded in the base paper layer in the paper flow direction with the surface of the thread exposed. When forcibly peeled off, the glitter surface of the anti-counterfeit paper was clearly observable with different glittering patterns on both sides described in each example. Furthermore, when copying with a color copier, there was no sparkle peculiar to one of the holograms, and the hologram and copy of the thread were completely different, and the authenticity of both sides could be judged at a glance.

Sectional drawing of the glittering film which shows one Example of this invention Sectional drawing of the glittering film which shows one Example of this invention Sectional drawing of the glitter pattern formation which shows one Example of this invention Sectional drawing of the glittering film which shows one Example of this invention Sectional drawing of the glittering film which shows one Example of this invention Explanatory drawing which shows the visual recognition state of the design of the glittering film which shows one Example of this invention Explanatory drawing which shows the visual recognition state of the design of the glittering film which shows one Example of this invention Explanatory drawing which shows the visual recognition state of the design of the glittering film which shows one Example of this invention Explanatory drawing which shows the visual recognition state of the design of the glittering film which shows one Example of this invention The top view and sectional drawing of the glitter pattern formation which show one Example of this invention

Explanation of symbols

10: Glossy film 11: Base material 15: Relief forming layer 15A, 15B, 15C, 15D: First to n relief forming layers 17: Metal thin film layers 17A, 17B, 17C, 17D: First to n metal thin film layers 21 , 21B, 21D: Primer layer 25: Protective layer 31: Adhesive layer 100: Glossy pattern formation 101: Base paper

Claims (8)

A glittering film comprising a relief forming layer and a metal thin film layer as a pair of glittering design layers, and having two or more groups of glittering design layers through a primer layer. 2. The glitter film according to claim 1, wherein the glitter film has at least two kinds of glitter patterns. The glitter film according to claim 1, wherein the glitter pattern is a hairline pattern, a line pattern, a hologram, and / or a diffraction grating. It comprises at least a first metal thin film layer, a first relief forming layer having a first glitter pattern, a primer layer, a second relief forming layer having a second glitter pattern, and a second metal thin film layer. The glittering film in any one of -3. The glitter film according to any one of claims 1 to 4, wherein at least two glitter patterns can be visually recognized from the front side and the back side. The glitter film according to any one of claims 1 to 5, wherein a glass transition temperature of the primer layer is 130 ° C or lower. The glittering film according to any one of claims 1 to 6, wherein the total thickness is 5 to 20 µm. A glittering design product comprising the glittering film according to any one of claims 1 to 7, wherein a glittering design is provided on at least one part.

Images