JPH0447748Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Industrial Application Field) The present invention relates to a poster with a hologram, and more particularly, to a poster having excellent three-dimensional and cosmetic effects due to the hologram. (Problems that conventional technology and ideas are trying to solve) Holography is a new technology that records and reproduces the state of the wavefront of light from an object. With materials that record the appearance of light wavefronts in the form of interference fringes produced by light interference, three-dimensional images can be reproduced, and multiple recording is also possible. Furthermore, as a method for recording holograms, interference fringes can be recorded using minute irregularities on the surface of a material, and since this hologram can be easily mass-produced, it is becoming widely used for various purposes. By the way, advertising, publicity,
Various posters are used for communication, messages, and other purposes. Given the purpose of these posters, various cosmetic improvements have naturally been added to enhance their aesthetic and design value, but in any case, they are too flat and lack an excellent three-dimensional effect. There is a problem that it is not possible to express a sense of design or luxury. (Means for Solving the Problems) The inventor of the present invention has arrived at the present invention as a result of research in order to impart better cosmetic and design effects to the conventional posters as described above. That is, in the present invention, a reflective reproduction type transparent relief hologram having a hologram forming layer having a relief surface and a transparent reflective metal thin film layer or a hologram effect layer is provided on a part or the entire surface of a poster base material. This is a poster with a hologram. (Example) Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. The hologram used in the poster of the present invention may be a reflective reproduction type transparent relief hologram having a hologram forming layer having a relief surface and a transparent reflective metal thin film layer or a hologram effect layer. Types of holograms include image holograms, rainbow holograms, diffraction gratings, and the like. Specific types of holograms include image holograms, rainbow holograms, Lipman holograms, holographic stereograms,
Diffraction gratings etc. can be widely applied. If holograms are roughly classified by material, they can be divided into two types: "photosensitive material type" and "embossed reproduction type", both of which can be used in the present invention. Since "photosensitive material type" holograms other than Lippmann holograms are transmission type in terms of reproduction function, they are accompanied by a reflective metal thin film layer or a hologram effect layer on the back surface as described above. Furthermore, the "photosensitive material type" Lippmann hologram type can be used as is. In addition, the "embossed duplication type" that uses transparent resin as a material is a transparent type, and can be applied by forming a reflective metal thin film layer or hologram effect layer on the back surface, but it follows the relief shape on the relief surface. A reflective metal thin film layer or a hologram effect layer can be provided by, for example, a vacuum evaporation method or a sputtering method, and can be used as is as a reflective hologram or a transparent hologram. Poster 10 with hologram shown in Figure 1 a-c
The adhesive layer 2 is applied onto the poster base material 1 using an embossed hologram as schematically shown in FIG. 2a.
This is an example in which a transparent reflective metal thin film layer (hereinafter simply referred to as a reflective metal thin film layer) 3 or a hologram effect layer 3' and a hologram forming layer 4 are laminated via a transparent reflective metal thin film layer (hereinafter simply referred to as a reflective metal thin film layer) 3. Alternatively, as shown in FIG. 2b, it can be laminated onto a transparent film 8 and provided in the window space 7 of the base material. Another example of a poster 10 with a hologram, a part of which is schematically shown in cross section in FIG. This is an example. Another example of a poster 10 with a hologram, a part of which is schematically shown in cross section in FIG. 4, is an example in which a hologram forming layer 4 is provided on the surface of the reflective metal thin film layer 3 or the hologram effect layer 3'. The hologram's minute irregularities are exposed on the surface. In the structures shown in FIGS. 3 and 4, the minute irregularities on the surface are exposed, so in order to prevent damage to the surface, it is preferable to provide a protective layer on the surface. Each constituent material will be explained in more detail below. Poster base materials Poster base materials include paper, plastic, metal, and other materials conventionally used for posters.
Materials such as glass, wood, etc. or composites thereof can all be used. Although not shown, these poster base materials may be provided with various other decorations using conventional techniques. The hologram can be provided on the entire surface or part of these poster substrates. In the above, the poster includes a completed poster and each member for assembling the poster. Hologram Forming Layer The thickness of the hologram forming layer can be appropriately selected depending on the size of the poster and the type of hologram, but it is usually 0.1 to 50 μm, preferably 0.5 to 5 μm. Embossed holograms are suitable for this invention.
The resin for this embossed hologram forming layer can be thermoformed when molding (duplicating) a hologram.
After forming the hologram, that is, during processing, it is necessary to have enough resistance to withstand the heat pressure during processing and the solvent in the adhesive. As such a resin, reactive resins such as so-called ultraviolet curable resins, electron beam curable resins, thermosetting resins, and naturally curable resins may be used. Especially when considering productivity, resins that are cured by ultraviolet rays or electron beams are suitable. Specifically, for example, methyl (meth)acrylate [The term (meth)acrylate is meant to include both acrylate and methacrylate. The same applies below], ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, isobutyl (meth)acrylate, t-butyl (meth)acrylate,
Isoamyl (meth)acrylate, cyclohexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, ethylene glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, hexanediol di(meth)acrylate, trimethylolpropane triacrylate (meth)acrylate, trimethylolpropane di(meth)acrylate, pentaerythritol tetra(meth)acrylate, pentaerythritol tri(meth)acrylate, dipentaerythritol hexa(meth)acrylate, ethylene glycol diglycidyl ether di(meth)acrylate
Radically polymerizable unsaturated groups such as acrylate, polyethylene glycol di(meth)acrylate, propylene glycol diglycidyl ether di(meth)acrylate, polypropylene glycol diglycidyl ether di(meth)acrylate, sorbitol tetraglycidyl ether tetra(meth)acrylate, etc. A monomer having the following properties can be used. Further, as ultraviolet or electron beam curable resins having thermoformability, the following methods can be used for polymers obtained by polymerizing or copolymerizing the following compounds (1) to (8).
Those in which radically polymerizable unsaturated groups are introduced according to (i) to (d) are used. (1) Monomers with hydroxyl groups: N-methylol (meth)acrylamide, 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 2-hydroxybutyl (meth)acrylate, 2-hydroxy-3
-Phenoxypropyl (meth)acrylate, etc. (2) Monomers having carboxyl groups: (meth)acrylic acid, (meth)acryloyloxyethyl monosuccinate, etc. (3) Monomers with epoxy groups: glycidyl (meth)acrylate, etc. (4) Monomers having an aziridinyl group: 2-aziridinylethyl (meth)acrylate, allyl 2-aziridinylpropionate, etc. (5) Monomers having amino groups: (meth)acrylamide, diacetone (meth)acrylamide, dimethylaminoethyl (meth)acrylate, diethylaminoethyl (meth)acrylate, etc. (6) Monomer having a sulfone group: 2-(meth)
Acrylamido-2-methylpropanesulfonic acid, etc. (7) Monomer having isocyanate group: 2,4-
Adducts of diisocyanates and radically polymerizable monomers having active hydrogen, such as 1 mol to 1 mol adducts of toluene diisocyanate and 2-hydroxyethyl (meth)acrylate. (8) Furthermore, in order to adjust the glass transition point of the above copolymer and the physical properties of the cured film, the above compound and the following monomers that can be copolymerized with this compound are added. can be copolymerized. Examples of such copolymerizable monomers include methyl (meth)acrylate,
Ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, isobutyl (meth)acrylate, t-butyl (meth)acrylate, isoamyl (meth)acrylate, cyclohexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate Examples include acrylate. Next, the polymer obtained as described above is reacted by the methods (a) to (d) described below to introduce a radically polymerizable unsaturated group to obtain an ultraviolet or electrocurable resin. It will be done. (a) In the case of a polymer or copolymer of a monomer having a hydroxyl group, a monomer having a carboxyl group such as (meth)acrylic acid is subjected to a condensation reaction. (b) In the case of a polymer or copolymer of monomers having a carboxyl group or a sulfone group, the monomers having the aforementioned hydroxyl group are 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 or a monomer having an aziridinyl group or a diisocyanate compound and a hydroxyl group-containing acrylic acid ester monomer The addition reaction may be carried out using a 1:1 mole ratio of adducts. Furthermore, the above-mentioned monomer and the above-mentioned thermoformable ultraviolet ray or electron beam curable resin can be mixed and used. Furthermore, the above materials can be sufficiently cured by electron beam irradiation, but when curing by ultraviolet irradiation, benzoquinone, benzoin,
Also usable are benzoin ethers such as benzoin methyl ether, halogenated acetophenones, and the like which generate radicals when irradiated with ultraviolet rays. Reflective Metal Thin Film Layer The reflective metal thin film layer is for imparting reflectivity to the hologram forming layer, and is made of Cr, Ti, Fe,
Co, Ni, Cu, Ag, Au, Ge, Al, Mg, Sb,
Metals such as Pb, Pd, Cd, Bi, Sn, Se, In, Ga, Rb, and their oxides, nitrides, etc. alone or in combination.
Formed by combining more than one species. Among these metals, Al, Cr, Ni, Ag, Au, etc. are particularly preferred. The thickness of this reflective metal thin film layer is preferably 10 to 10,000 angstroms, preferably 200 to 2,000 angstroms. Although this reflective metal thin film layer may not necessarily be present, it is preferable that it be present. Hologram Effect Layer The embodiment in which the hologram effect layer is provided in the hologram forming layer is not limited to the case of relief holograms, but is similarly applicable to other holograms. Any material can be used for the hologram effect layer as long as it can produce a hologram effect, such as a transparent material with a different refractive index from that of the hologram forming layer, or a reflective metal thin film layer with a thickness of 200 angstroms or less. . In the former case, the refractive index may be larger or smaller than that of the hologram forming layer, but the difference in refractive index is preferably 0.1 or more, more preferably 0.5 or more. According to experiments conducted by the present inventors, a value of 1.0 or more is optimal. By providing transparent thin film layers having different refractive indexes in this manner, a hologram effect is produced, and an effect that does not hide the underlying layer, for example, the display section, is achieved. In the latter case, although it is a reflective metal thin film layer, since the thickness is 200 angstroms or less, the transmittance of light waves is high, and therefore, it exhibits the effect of producing a hologram effect as well as the effect of not concealing the display area.
In other words, when a light wave passes through a reflective metal thin film layer, its amplitude decreases rapidly at exp (-2πK) per wavelength, so if the film thickness exceeds 200 angstroms, the transmittance will be quite small. Become. Therefore, by setting the film thickness to 200 angstroms or less, the transmittance becomes sufficient and a hologram effect can be produced. Further, as a material for the hologram effect layer, a reflective metal layer having a thickness of 200 angstroms or more can be used. Examples of materials for the hologram effect layer include the following (1) ~
Materials listed in (6) can be used. (1) A transparent continuous thin film with a higher refractive index than the hologram forming layer. These include those that are transparent in the visible region and those that are transparent in the infrared or ultraviolet region; the former are shown in Table 1, and the latter are shown in Table 2. In the table, n indicates the refractive index (the same applies to (2) to (5) below).

【table】

[Table] Table 2 Transparent material in infrared or ultraviolet region n CdSe 3.5 CdTe 2.6 Ge 4.0-4.4 HfO2 2.2 PbTe 5.6 Si 3.4 Te 4.9 TlCl 2.6 ZnTe 2.8 (2) Transparent ferroelectric material with a higher refractive index than the hologram forming layer . It is shown in Table 3. Table 3 Material n CuCl 2.0 CuBr 2.2 GaAs 3.3-3.6 GaP 3.3-3.5 N4 (CH2) 6 1.6 Bi4 (GeO4) 2 2.1 KH2PO4 (KDP) 1.5 KD2PO4 1.5 NH4H2PO4 1.5 KH2AsO4 1.6 RbH2AsO4 1.6 KTa0.65N b0.35O3 2.3 K0. 6Li0.4NbO3 2.3 KSr2Nb5O15 2.3 SrxBa1−xNb2O6 2.3 Ba2NaNbO15 2.3 LiNbO3 2.3 LiTaO3 2.2 BaTiO3 2.4 SrTiO3 2.4 KTaO3 2.2 (3) A transparent continuous thin film with a lower refractive index than the hologram forming layer. It is shown in Table 4. 4th surface material n LiF 1.4 MgF2 1.4 3NaF・AlF3 1.4 AlF3 1.4 GaF2 1.3 NaF 1.3 (4) Reflective metal thin film layer with a thickness of 200 angstroms or less The reflective metal thin film layer has a complex refractive index, and the complex refractive index :n is expressed as n*=n-iK. n
is the refractive index and K is the absorption coefficient. The materials of the reflective metal thin film layer used in the present invention are shown in Table 5, and the above n and K are also shown in the table.

【table】

[Table] Other materials include Sn, In, Te, Ti, Fe,
Co, Zn, Ge, Pb, Cd, Bi, Se, Ga, Rb, etc. can be used. In addition, oxides of the metals listed above,
Nitride and the like can also be used, and metals, their oxides, nitrides, etc. can be used alone or in combination of two or more of each. (5) A resin with a different refractive index from the hologram forming layer. The refractive index may be larger or smaller than that of the hologram forming layer. Examples of these are shown in Table 6. Table 6 Resin n Polytetrafluoroethylene 1.35 Polychlorotrifluoroethylene 1.43 Vinyl acetate resin 1.45-1.47 Polyethylene 1.50-1.54 Polypropylene 1.49 Methyl methacrylate resin 1.49 Nylon 1.53 Polystyrene 1.60 Polyvinylidene chloride 1.60-1.63 Vinyl butyral resin 1. 48 Vinyl formal resin 1.50 Polyvinyl chloride 1.52-1.55 Polyester resin 1.52-1.57 Carbonic acid formalin resin 1.5-1.7 In addition to the above, general synthetic resins can be used, but resins having a large refractive index difference with the hologram forming layer are particularly preferred. (6) A laminate formed by appropriately combining the materials listed in (1) to (5) above. The combinations of the materials (1) to (5) above are arbitrary, and the vertical positional relationship of each layer in the layered structure is also arbitrarily selected. Among the thin film layers (1) to (6) above, the thickness of the thin film layer (4) is 200 angstroms or less, but (1) to
The thickness of the thin film layer in (3), (5), and (6) may be within the transparent region of the material forming the thin film, and is generally 10 to
The thickness is preferably 10,000 angstroms, more preferably 100 to 5,000 angstroms. As a method for forming the hologram effect layer as a hologram forming layer, the hologram effect layer is
In the case of the material (4), general thin film forming methods such as vacuum evaporation, sputtering, reactive sputtering, ion plating, and electroplating can be used. If the material is 5), a general coating method etc. can be used. When the hologram effect layer is made of the material (laminated body) described in (6) above, the above-mentioned means, methods, etc. can be used in appropriate combinations. Note that in the case of the material (5) above, as long as it is a transparent material, it does not need to be a thin film, and a resin layer having a thickness greater than a thin film may be provided in the hologram forming layer. Note that the hologram effect is best expressed when the hologram effect layer is provided directly on the surface of the hologram forming layer. The hologram effect layer may be provided so as to fill the relief forming surface (i.e., one surface is flat), or may be provided so as to follow the relief formation (i.e., one surface is an uneven surface). ) Adhesive layer The adhesive layer serves to adhere the hologram forming layer and the reflective metal thin film layer or the hologram effect layer to the poster substrate. As the adhesive, a wide variety of conventional adhesives such as acrylic resins, vinyl resins, polyester resins, urethane resins, amide resins, and epoxy resins can be used. The thickness of this adhesive layer is 0.1~
It is preferably 50 μm, preferably 0.5 to 10 μm. Note that an anchor layer (not shown) may be provided between the reflective metal thin film layer or hologram effect layer and the adhesive layer in order to improve the adhesion between the two. Manufacturing method Next, a method for manufacturing the hologram-attached poster according to the present invention will be described. The hologram 9 to be incorporated into the poster 10 as shown in FIGS. 1 to 4 can be manufactured by any conventionally known method, but a preferred method is a transfer method. An example of this transfer will be explained. First, a poster with a hologram
10, a hologram transfer sheet 20 as shown in FIG. 5 is prepared. To create this hologram transfer sheet 20 , first, apply a release layer 6 and an overprint layer (not shown) on the hologram transfer sheet base material 5 as necessary.
A hologram forming film is formed by providing an ultraviolet or electron beam curable resin having thermoformability or a thermosetting resin 4 having thermoformability. Among the above resins, particularly preferred are ultraviolet or electron beam curable resins that are solid at room temperature before curing and have thermoformability. Next, the obtained hologram forming film and the hologram master plate on which minute irregularities were formed,
The resin layer of the film is brought into contact with the hologram original plate by heating and pressurizing to form minute irregularities on the resin surface, or thereafter, the resin is cured by irradiation with ultraviolet rays or electron beams or by further applying heat. When heat-pressing the hologram original plate and the hologram-forming film, a heat-pressing means such as a heating roll can be used, and the temperature of the heating roll depends on the type of resin to be used, the material of the base film, the thickness, etc. The temperature varies greatly depending on the temperature, but in general, a temperature of 100 to 200°C is appropriate. In addition, the hologram original plate and the hologram forming film should be 0.1Kg/cm ² or more, preferably 1Kg/cm 2 or more.
It is preferable to weld under a pressure of cm ² or more. At this time, ultraviolet rays or electron beams may be irradiated. Further, the irradiation may be performed again after the film on which the minute irregularities of the hologram of the hologram of the hologram master are molded is peeled from the hologram master, and the irradiation intensity is preferably set to sufficiently harden the resin. Irradiation with ultraviolet rays or electron beams needs to be determined appropriately depending on the resin used. Next, a reflective metal thin film layer 3 or a holographic effect layer 3' is applied. This reflective metal thin film layer or hologram effect layer 3' is formed by a sputtering method,
It can be provided on the hologram forming layer 4 by an ion plating method, a vacuum evaporation method, or other methods. Next, an anchor layer (not shown) is provided on the reflective metal thin film layer 3 or the hologram effect layer 3' if necessary, and then an adhesive layer 2 is provided by a coating method or the like, and the hologram transfer sheet 20 is formed. can get. Furthermore, since conventionally used types of ultraviolet curable resins and electron beam curable resins are generally in a liquid state, they become extremely sticky when applied onto a base film. Alternatively, a hologram-forming film coated with an electron beam-curable resin cannot be rolled up and stored, so an ultraviolet-curable resin is coated on the base film one by one just before it comes into contact with the hologram master. Although there was a problem that a film had to be formed, the above-mentioned film for forming holograms is made of a specific resin, so it has the advantage that it does not become sticky and can be rolled up and stored. have. Next, when the hologram transfer sheet 20 having the above-mentioned configuration and the base material 1 are heat-pressed so that the adhesive layer 2 of the hologram transfer sheet and the base material 1 are in contact with each other, the hologram forming layer of the hologram transfer sheet 20 is bonded. 4 and the reflective metal thin film layer 3 or hologram effect layer 3' are transferred onto the substrate 1 to obtain a hologram-attached poster 10 according to the present invention. The hologram transfer sheet 20 and the base material 1 are 100~
It is preferable to carry out heat-pressure welding at a temperature of 200° C. and a pressure of 5 to 50 kg/cm ² . (Effects of the invention) Since the poster according to the invention has a hologram on its surface, the following effects can be obtained. (b) The poster has a three-dimensional visual appearance, further improving its aesthetics, decoration, and sense of luxury. (b) Since a hologram forming layer with excellent heat resistance is provided, the hologram can be bonded by applying heat when attaching the hologram. (c) Since a hologram forming layer with excellent weather resistance is provided, the effect will not be lost even under severe conditions such as when used outdoors.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a poster with a hologram according to the present invention, FIGS. 2 to 4 are cross-sectional views of the hologram, and FIG. 5 is a hologram transfer sheet used in manufacturing a poster with a hologram. FIG. DESCRIPTION OF SYMBOLS 1... Base material, 2... Adhesive layer, 3... Reflective metal thin film layer, 3'... Hologram effect layer, 4... Hologram forming layer, 5... Hologram transfer sheet base material, 6... Peeling Layer, 7...window space, 8...transparent film, 9...hologram, 10 ...poster with hologram, 20 ...hologram transfer sheet.

Claims (1)

[Claims for Utility Model Registration] (1) A reflective reproduction type transparent poster having a hologram forming layer with a relief surface and a transparent reflective metal thin film layer or a hologram effect layer on a part or the entire surface of the poster base material. A poster with a hologram, characterized by being provided with a type relief hologram. (2) With a hologram according to the scope of utility model registration claims (1), in which the hologram forming layer is formed using an ultraviolet curable resin, an electron beam curable resin, or a thermosetting resin that has thermoformability. Poster. (3) Scope of utility model registration claims where the thermoformable ultraviolet curable resin, electron beam curable resin, or thermosetting resin is solid at room temperature before curing and has thermoformability. A poster with a hologram as described in paragraph (2).