JPS62212682A - Patterned hologram transfer sheet - Google Patents

Abstract

PURPOSE:To obtain a transfer sheet having a high ornamental characteristic in appearance by by partially forming a hologram effect layer for reproducing a hologram image and printing ad forming a design optionally corresponded to the reconstructed hologram image. CONSTITUTION:A patterned hologram transfer sheet 1 is provided with a film base material 2, a release layer 3, a hologram forming layer 4, the hologram effect layer 5 and an adhesive agent 6 and is provided with printed design layers 7 at adequate points of the respective layers. The film base material 2 consists of a heat resistant synthetic resin. A thermoplastic resin or thermosetting resin is used for the material of the release layer 3. A resin curable by electron rays or UV rays, thermoplastic resin, etc., are used for the material of the hologram forming layer 4. The hologram effect layer 5 is formed to a patterned shape at the points when the reproduction of the hologram image is needed. Metals, such as aluminum, silver and chromium and others are used for the material. The printed design layers 7 are formed by printing designs of characters, symbols, figures, patterns, etc. by printing means. A resist layer 8 may be removed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a patterned hologram transfer sheet, and more specifically, a hologram image is partially reproduced, and characters, symbols, patterns 11 formed by ordinary printing are reproduced. The present invention relates to a transfer sheet on which a pattern such as the following is expressed.

[Conventional technology]

In conventional hologram transfer sheets, a hologram is formed on the entire surface of the -In sheet, so for example, when a transfer is performed on an object by the roll transfer method, the hologram is formed on the transferred part of the object. The hologram is present all over the surface and gives a very monotonous impression in appearance.In addition, attempts have been made to transfer the hologram using the up-down transfer method using the above-mentioned transfer sheet to partially provide a hologram on the transferred object. However, in this case, a rubber stamp or metal stamp formed in a pattern corresponding to the hologram part to be transferred is required, making the transfer process complicated.Moreover, the edges of the transferred hologram are not sharp and the hologram image is It lacked clarity.

Therefore, recently, hologram transfer sheets in which holograms themselves are formed in a pattern have become known.

[Problem that the invention seeks to solve]

However, the above-mentioned hologram transfer sheet in which a hologram is formed in a pattern has a monotonous appearance compared to a transfer sheet in which a hologram is provided on the entire surface because the hologram image is partially reproduced when transferred. Although the problem is alleviated to some extent, there is a problem that the hologram image alone lacks decorativeness because there is no color window.

[Means for solving problems]

The present invention addresses the above-mentioned problems, and includes partially forming a hologram effect layer for reproducing a hologram image, and printing a pattern that arbitrarily corresponds to the hologram image to be reproduced by the hologram effect layer. The purpose of the present invention is to provide a transfer sheet that is highly decorative in appearance and that can reproduce a clear and sharp partial hologram image by doing so, and that also expresses a pattern that arbitrarily corresponds to the hologram image. do.

That is, the patterned hologram transfer sheet of the present invention includes a heat-resistant film base material, a release layer provided on the base material, and the release NF! It consists of a hologram forming layer provided on J, a hologram effect layer provided in a pattern on the hologram forming layer, and an adhesive layer provided on the forming layer and effect layer side, and at appropriate locations on each of the above layers. It is characterized by being provided with a printed pattern layer.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows the basic structure of the patterned hologram transfer sheet of the present invention, in which the patterned hologram transfer sheet l consists of a film base material 2, two layers 1rji layer 3 provided on the base material 2, and , a hologram forming layer 4 provided on the two layers and one partition layer 3, and a hologram effect Jl! provided in a pattern on the hologram forming layer 4. ! 5. Above formation F14 and effect 1! ! 5 side, and a printed pattern layer 7 is provided at appropriate locations on each of the layers.

The film base material 2 is made of a heat-resistant synthetic resin, and specific materials for the base material 2 include, for example:
Polyester film with a thickness of 15 to 75μ (two-wheel stretched polyethylene terephthalate, etc.), a thickness of 12 to 100μ
Examples include a nylon film with a thickness of 12 to 50 μm, and a polypropylene film with a thickness of 12 to 50 μm.

Even if the peeled fiFI3 is composed of one layer or 2W
Thermoplastic resin or thermosetting resin may be used as the material for the layer 3, but it is necessary to avoid deformation of the hologram forming layer 4, which will be described later, due to heat during transfer. It is desirable that at least one layer be formed of a thermosetting resin in order to
For example, as shown in FIG. 2, the N layer 3 is 2W! J, the 111th! of layer 3! It is desirable that the second layer is formed of a thermoplastic resin and the second layer is formed of a thermosetting resin. Examples of the thermoplastic resin include thermoplastic acrylic resin, vinyl acetate resin, etc. Examples of resins include thermosetting acrylic resin, amino alkyd resin, phenol-modified alkyd resin, urethane resin,
Alternatively, a mixture of an acrylic resin, an epoxy resin, and an amino resin may be used. Examples of methods for forming the peeling layer 3 include gravure coating, roll coating, screen printing, and offset printing. ! The thickness of 3 is 0.
5-5μ is preferable. When the peeling material 3 is formed of a thermosetting resin, the resin is applied and then heated and cured.

As the material of the hologram forming layer 4, for example, electron beam or ultraviolet curing resin, thermoplastic resin, etc. can be used, but electron beam or ultraviolet curing is preferable because it has good heat resistance against heat during transfer. The electron beam curable resin is preferably an oligomer of epoxy acrylate, urethane acrylate, acrylic-modified polyester, etc., and neopentyl glycol acrylate-1-, tri-curable resin is added to this for the purpose of adjusting the crosslinked structure and viscosity. Monomers such as methylolpropane triacrylate can be blended and used. Further, as the ultraviolet curable resin, for example, the above-mentioned electron beam curable resin mixed with a photopolymerization initiator is used.

Hologram formation FI4 is performed by forming a resin layer with a thickness of 1 to 20 μm (preferably 2 to 10 μm) on the release layer 3 using the gravure coating, roll coat method, or knife tool method. A hologram master plate with a hologram image formed on the surface of the resin layer is heat-pressed and then irradiated with electron beams or ultraviolet rays to form a hologram. Note that the method for forming the hologram forming layer 4 is not limited to the above method, and may be formed by any known forming method.

The hologram effect layer 5 in the present invention is provided to enable reproduction of a hologram image, and is formed in a pattern on the hologram forming layer 4 at a location where reproduction of a hologram image is required. Any material can be used for the layer 5 as long as it can reproduce a hologram image, and metals such as aluminum, silver, antimony, and chromium are commonly used. Further, as the material for the hologram effect layer 5, in addition to the above-mentioned materials, for example, the following materials fil to (7) can also be used.

(1) Hologram l, a transparent continuous thin film with a higher refractive index than the forming layer.
The former is shown in Table 1, and the latter is shown in Table 2.
Each is shown in the table. In the table, n indicates the refractive index (hereinafter, (
The same applies to 2) to (5)).

Table 1 Transparent materials in the visible region Table 2 Transparent materials in the infrared or ultraviolet region (2) Transparent ferroelectric materials with a higher refractive index than the hologram forming layer Table 3 shows transparent materials having a higher refractive index than the hologram forming layer.

Table 3 (3) Transparent continuous thin film having a lower refractive index than the hologram forming layer is shown in Table 4.

Table 4 (4) The three reflective metal thin films with a thickness of 200 Å or less have a complex refractive index, and the complex refractive index: n* is n*
= n−iK. n represents the refractive index, and K represents the absorption coefficient.

The materials of the reflective metal thin film used in the present invention are shown in Table 5, and the above n and K are also shown in the same table.

Other materials in Table 5 include Sn % I n % T e
ST +, Fe, , Co, Zn, Ge, Pb, Cd5
BisSo, Ga, Rb, etc. can be used. Further, oxides, nitrides, etc. of the metals listed above can also be used, and metals, oxides, nitrides, etc. can be used alone or in combinations of Hffi or more.

(5) A resin having a different refractive index from the hologram forming layer may have a larger or smaller refractive index than the hologram forming layer. Examples of these are shown in Table 6.

Table 6 In addition to the above, general synthetic resins can be used, but resins that have a large refractive index difference with the hologram forming layer are particularly preferred.

(6) A laminate made by appropriately combining the materials listed in (11) to (5) above. The materials listed in (1) to (5) above may be combined arbitrarily, and the vertical positional relationship of each layer in the layer structure may also be arbitrarily determined. selected.

(7) Reflective metal layer with a thickness of 200 Å or more (4) above
200 to 100 people depending on the material used in
Gold iI formed to a thickness of 00 people? J.

Among the 119 thin layers of (1) to (6) above, (4)
The thickness of the thin film layer is 200 Å or less, but (1) to (3
), (5), and (6), the thickness of the thin film layer may be in the transparent region of the material forming the thin film, and is generally 10 to 100
00 people, more preferably 100 to 2000 people.

As a method for forming the hologram effect layer 5 on the hologram forming layer 4 using the above-mentioned materials, -1c includes a vacuum thin deposition method,
When the effect layer 5 can be formed into a pattern using a single-claw thin film forming method such as a sputtering method, a reactive sputtering method, an ion blating method, or an electroplating method, and the effect layer 5 is made of the material described in (5) above. can be formed into a pattern using a general coating method or the like. When the effect layer 5 is made of the material (laminate) described in (6) above, it is formed by appropriately combining the above-mentioned means and methods.

In addition, as another method for forming the hologram effect F5 in a pattern, a hologram effect film made of a metal film is formed on the entire surface of the hologram forming layer 4 by using the above-mentioned metal materials and using a vacuum thin deposition method or the like. After that, a resist layer 8 having acid resistance or alkali resistance is printed in a pattern corresponding to the position of the hologram effect layer 5 to be formed on the film surface, and the exposed portion of the hologram effect film (not particularly shown) is printed. ) can be formed by dissolving and removing the hologram effect layer (FIGS. 1 and 2). After dissolving and removing the exposed portion of the hologram effect film, the printed resist fi8 is The thickness of the hologram effect film, which may be left on or removed from the holographic film, is preferably 100 to 800, more preferably 300 to 400.

In printing and forming the resist layer 8, a transparent ink that is acid- or alkali-resistant and has adhesiveness to the hologram effect film is used. A mixture of a polyamide resin and a nitrocellulose resin, a mixture of a vinyl chloride-vinyl acetate copolymer and an isocyanate compound, a mixture of a nitrocellulose resin, an isocyanate compound, and an acrylic resin, etc. as a vehicle. The ink has heat resistance, and the vehicle is made of a two-component reactive curable resin such as urethane or epoxy, and if necessary, a nitrocellulose resin, methyl methacrylate resin, polyester resin, etc. is added. Examples include acid- or alkali-resistant inks, and acid- or alkali-resistant inks made of electron beam or ultraviolet curable resins can be used. Specifically, acrylic groups are
Examples include a vehicle containing a UV sensitizer in an acrylic resin having functional or higher functionality, or a vehicle using the electron beam or UV curable resin used to form the hologram forming layer.

A patterned resist layer 8 can be formed using the above ink by a printing method such as gravure printing, offset printing, or screen printing. Note that the above ink can be used with addition of additives such as azo yellow, permanent red, permanent orange, alizarin lake, cyanine blue, vignent green, green gold, etc., if necessary.

After forming the resist layer 8, the eluent used to remove the portion of the hologram effect film where the layer 8 is not provided is an inorganic acid such as hydrochloric acid, sulfuric acid, or nitric acid, or an organic acid such as formic acid, acetic acid, or Sierra acid. An acid aqueous solution having a concentration of about 1N, or an aqueous solution of an alkaline agent such as sodium hydroxide or potassium hydroxide, preferably a hydrochloric acid or sodium hydroxide aqueous solution having a concentration of 0.2 to 0.5N.

Elution of the hologram effect film with an acid or alkaline aqueous solution is performed by immersing the sheet-like material formed above in these aqueous solutions (liquid temperature: 40°C).
~50°C) for 10 to 30 seconds, and then thoroughly rinsed with water.

The adhesive @6 is formed on the hologram forming N4 and hologram effect FIS side, and the material of the N6 is acrylic resin, vinyl acetate resin, rubber resin, olefin resin, epoxy resin, diacryl phthalate. Examples include resins, mixtures of epoxy resins, melamine resins, and acrylic resins. As the means for forming the adhesive layer 6, methods such as gravure coating, roll coating, screen printing, and offset printing can be used, and the thickness of the layer 6 is usually preferably 1 to 5 microns.

The printed pattern N7 in the present invention is formed by printing a pattern such as a character, symbol, figure, pattern, etc. by a normal printing means, and is printed at an appropriate location of each layer constituting the transfer sheet 1 described above, that is, between each layer, Alternatively, it can be provided at any position on the surface of the top or bottom layer. Also,
The layer 7 can be provided entirely or partially on the layer; in the latter case, it is provided at a position that corresponds arbitrarily to the hologram image to be reproduced, i.e. the hologram effect WJ5, for example, the hologram effect layer 5 It can be provided in synchronization with the hologram effect F!5 (I!II, etc., so as to overlap with the hologram effect F!5), or it can be provided between the hologram effect layers 5 (that is, combined with the hologram effect layer 5). In this embodiment, as shown in FIG. 2, an example of a printed pattern layer 7 provided between the hologram effect layers 5 on the hologram forming layer 4 and an example of printed pattern stripes 7a provided between the peeling layers 3 are given. ing.

When forming the printed pattern layer 7, transparent, semi-transparent,
Opaque inks can be used.

(In addition, if the printed pattern F!7 is to be provided entirely on a layer above the hologram forming layer 4, do not use opaque ink. This means that the hologram image on the transfer sheet 1 that has been transferred will not be visible. (This is because the transfer sheet 1 of the present invention is not coated with the adhesive FJ6.)
As shown in FIG. 2, an adhesive anchor layer 9 may be provided in order to improve the adhesion between the hologram forming layer 4, hologram effect layer 5 (and resist layer 8), printed pattern layer 7, and adhesive layer 6. can. Examples of the material for F59 include two-component reactive curable resins such as urethane or epoxy, and if necessary, nitrocellulose, methyl methacrylate (Δ1 fat, polyester addition, etc.) can be used. The adhesive anchor layer 9 can be provided as a type of adhesive layer, and the same method as the above adhesive 1i!5G can be used for the formation method.
The thickness of layer 9 is preferably 1 to 5 microns.

When performing transfer using the patterned hologram transfer sheet 1 of the present invention having the above configuration, as shown in FIG.
0, and then heat and pressure bonded from the film base material 2 side to adhere it to the transfer target 10, and then transfer is performed by subjecting the film base material 2 to 211F and 1.

The object to be transferred 10 to which the transfer sheet 1 of the present invention is transferred may be any article, product, or product, and includes, for example, electrical products, cards, coupons, stationery 1, building materials, and the like.

Next, the present invention will be explained in more detail by giving specific examples.

A thermoplastic acrylic resin was coated on one side of a 25μ thick transparent polyester film (Nilmirror F60 manufactured by Toshi Co., Ltd.) using a gravure coater to form a 1μ thick 1mM layer.
Apply thermosetting acrylic resin on top of it and heat it (180℃).
C. for 1 minute) to form a second 211 layer.

Next, an ultraviolet curable resin (composition: 50 parts by weight of polymethyl methacrylate, 351 parts of methacrylate, 1 part of trimethylolpropane triacrylate, 5 parts of benzoin ethyl ether) was applied using a reverse coater (9!5 g of methacrylate). /n?) L. After drying to form a hologram-forming resin layer, the hologram master plate on which the hologram is recorded in the form of minute irregularities is heated to 160 mm.
The hologram-forming resin layer was cured by irradiating ultraviolet rays while being heat-pressed at a temperature of 0.degree. C. to obtain a hologram-forming layer.

Next, the hologram master plate was peeled off, aluminum was applied to the entire surface in a vacuum to a thickness of 300 mm, and alkali-resistant ink (VM-PEAR, manufactured by Dainichiseika Industries, Ltd.) was applied to the vapor-deposited surface using a gravure printing method. was printed in a pattern and dried to form a patterned resist.

Next, this film was immersed in a 0.3N aqueous sodium hydroxide solution at 40°C for 15 seconds to dissolve and remove the aluminum vapor deposits in areas where there was no resist layer, rinsed with water, and dried to form a patterned hologram effect layer. did.

Next, SP ink manufactured by Jujo Kako ■ was printed using a multicolor continuous screen printing machine in synchronization with the patterned hologram effect layer to form a printed pattern layer.

Next, a two-component curable urethane resin was applied to the entire surface using a reverse coater (coating amount: 2 g/n ( ) to form a single layer of adhesive anchor, and then a thermoplastic acrylic resin adhesive was applied (coating ff: 11 g/rr). An adhesive layer was formed thereon to obtain a patterned hologram transfer sheet of the present invention.

〔Effect of the invention〕

As explained above, when the patterned hologram transfer sheet of the present invention is transferred to a transfer target, since the hologram effect layer is provided in a pattern, a clear hologram image can be partially reproduced, and the hologram image can be partially reproduced. Since printed pattern layers are provided at appropriate locations on each layer constituting the invention transfer sheet 1-, printed patterns such as letters, symbols, patterns, etc. are expressed in arbitrary correspondence with the hologram image, and the appearance is similar to that of a&l! Compared to conventional hologram transfer sheets, which tend to have a similar appearance, they have the effect of being full of color and highly decorative in appearance.

Further, according to the present invention, since the structure of the transfer sheet is complicated, for example, when transferred to a transferred object such as a cash voucher,
It becomes technically difficult to counterfeit the transfer object, and it can be used as a type of counterfeit prevention means.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal cross-sectional view of a patterned hologram transfer sheet of the present invention, FIG. 2 is a longitudinal cross-sectional view of another embodiment of the transfer sheet of the present invention, and FIG. FIG. 2 is a longitudinal cross-sectional view showing a state in which transfer is performed on a transfer target using the transfer sheet of the present invention. 1... Patterned hologram transfer sheet 2... Film 14 3... 71 L'd R 1... Hologram forming layer 5... Hologram, effect layer 6... Contact layer 7... Printing 12 Pattern layer 8・Resist layer

Claims (1)

[Claims] A film base material having heat resistance, a release layer provided on the base material, a hologram forming layer provided on the release layer, a hologram effect layer provided in a pattern on the hologram forming layer, and the above forming layer. and an adhesive layer provided on the effect layer side, and a printed pattern layer is provided at appropriate locations on each of the layers.