JP3271285B2 - Dyed goods - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dyed product. More specifically, the present invention relates to surface protection and counterfeit prevention of plastic materials whose surface is dyed with a sublimable dye.

[0002]

2. Description of the Related Art A method for dyeing a plastic material using a so-called sublimable dye is well known. For example, the dye is formed into an ink together with a binder resin and printed on a temporary support. By heating the printed matter on a plastic material, only the dye in the ink permeates into the plastic material and is dyed (transferred). Staining method). At this time, the ink is not transferred, but is removed together with the temporary support.

Alternatively, an ink containing a dye is directly printed on a plastic material, and then heated to allow the dye to penetrate into the inside of the plastic and be dyed (penetration printing method). The ink layer is left as it is or it is peeled off,
In each case, the dye has penetrated into the plastic and the image remains.

[0004] Dyes are believed to be sublimable and change from the solid state directly to the gaseous state, and it is believed that such gaseous dyes penetrate into plastic materials. For this reason, dyes are generally called sublimable dyes. However, it has not been strictly confirmed that no liquid state exists between the solid state and the gas state. It is also not clear whether the penetration into the plastic material occurs in the gaseous state or in the liquid state. For this reason, dyes are sometimes referred to as vaporizable dyes or hot melt transferable dyes.

A heating plate, a heating roll, an infrared panel heater and the like are used as a heating means for penetrating the dye into the inside of the plastic material. In recent years, due to the development of dyes with excellent thermal response and the improvement of thermal heads,
A method for forming an image by infiltrating a dye on a transfer ribbon into a plastic material by heat generated by a thermal head has been developed. The plastic material is mainly a plastic film or a PVC card such as an identification card.

However, the dye is generally a disperse dye or an oil-soluble dye. Such a dye has a small polarity, so that it easily changes into a gas upon heating and penetrates into the plastic material, but also has a small bonding force with the plastic material, and is mechanically damaged by a plasticizer or an organic chemical or scratched. Easy to receive. Furthermore, the dye is decomposed by light, particularly ultraviolet rays, and discolors or fades.

On the other hand, from the viewpoint of preventing forgery, fine prints are often provided on the surface of cash vouchers such as commuter passes, tickets, gift certificates and the like. This is to prevent falsification of data recorded on a ticket, for example, data such as a date, a section, an amount, a first name and a last name, and to make it easier to find out if the data has been falsified. Therefore, the fine print is provided so that if the record on the card is damaged by physical (eg, eraser, knife, etc.) or chemical (eg, various solvents, etc.) means, it will be erased before the record. It is common.

However, when the fine print is provided on the surface of the plastic material, the ink of the fine print pattern is placed on the surface. When sublimation transfer recording is performed on such a plastic material surface, the contact between the plastic surface and the transfer ribbon at the ink portion and the periphery thereof becomes insufficient, and the recording is lost, which is not preferable.

[0009] In some cases, an image receiving layer for further fixing a sublimable dye is provided on the surface of such a plastic material. In this case, there is no loss due to the fine print pattern, but since the record is formed in the image receiving layer, it is on the upper layer than the fine print, so that the record can be falsified without damaging the fine print pattern Therefore, the purpose of the fine print pattern cannot be fulfilled.

[0010]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a dyed material which protects the surface of a plastic dyed with such a sublimable dye and which can exhibit a function of preventing a fine pattern from being falsified. That is the task.

[0011]

In order to solve the above-mentioned problems, the present invention provides an adhesive layer, a sublimation dye diffusion preventing layer, and a surface protection layer on a surface of a plastic substrate whose surface is dyed with a sublimation dye. The present invention provides a dyed product obtained by sequentially laminating layers and forming a fine pattern on an adhesive layer or a diffusion prevention layer. Also, the present invention provides a dyed product in which the fine pattern is printed with a fluorescent ink or a magnetic ink.

[0012]

DETAILED DESCRIPTION The dyed product of the present invention will be described in detail with reference to the drawings. 1 to 3 are schematic sectional explanatory views showing an embodiment of the present invention. 1 is obtained by dyeing the upper surface of a plastic substrate 1 with a sublimable dye 2 and covering the dyed portion with an adhesive layer 3 and a surface protective layer 4. Is provided with a fine print pattern 6. The dyed material of FIG. 2 is obtained by dyeing the upper surface of a plastic substrate 1 with a sublimable dye 2, and laminating an adhesive layer 3, a dye diffusion preventing layer 5, and a surface protective layer 4 so as to cover the dyed portion. A fine pattern 6 is provided on the adhesive layer 3. The stain of FIG.
In the same layer configuration as in FIG. 2, a fine pattern 6 is provided on the dye diffusion preventing layer 5.

When a fine print is provided on the upper surface of the surface protective layer, there is a high possibility that the fine print pattern is damaged due to physical contact during normal card use. The fine print pattern must be provided so as to be damaged only when it is intentionally falsified or the like, and it is not preferable because the original function cannot be performed if the fine print pattern is damaged in normal use.

In the manufacturing method of the above-described embodiment, a plastic substrate 1 is dyed with a sublimable dye 2 by a known method, and thereafter, a transfer foil having each structure above the adhesive layer shown in FIGS. 1 to 3 is used. Preferably, it is produced by transfer. There is nothing that cannot be done by other methods, but it is not preferable because the process becomes complicated.

Here, the transfer foil will be described. The transfer foil may be prepared by first coating the release layer composition with a suitable solvent, and applying and drying the coating on the base film by a coating method such as gravure coating, roll coating coating, or bar coating. Next, the diffusion preventing layer and the adhesive composition may each be formed into a paint and applied sequentially. The method for forming and applying the coating for the diffusion preventing layer and the adhesive composition is the same as the method for forming and applying the coating for the release layer composition. The fine pattern is provided after the formation of the peeling layer or the diffusion preventing layer. The material used for the transfer foil is described in detail in Japanese Patent Application No. 3-307621 filed by the applicant.

The method of providing the fine print pattern can be easily provided between the respective layers by printing such as offset printing or gravure printing when manufacturing the transfer foil. However, the color of the fine print pattern should not be a hindrance to visually recognizing images such as characters and face photographs in the lower layer of the fine print pattern. In addition, as the shape of the fine print pattern, a precise and regular repetition pattern of a line figure or a pattern obtained by combining a logo, a trademark, or the like indicating an issuer or a manufacturer with the pattern is generally used. In order to further improve the effect of preventing tampering, a special ink such as a fluorescent ink or a magnetic ink may be used for printing the fine print pattern.

The transfer foil thus obtained can be transferred by superimposing it on a plastic material dyed with a sublimable dye, applying heat and pressure, and then removing and removing only the base film. The transfer can be performed by heating to a temperature equal to or higher than the softening point of the thermoplastic resin contained in the adhesive layer. Usually 150-2
50 ° C. The time may be about 1 to 10 seconds.

[0018]

The dyed product of the present invention is obtained by sequentially laminating an adhesive layer and a surface protective layer or a diffusion preventing layer and a surface protective layer of a sublimable dye on the surface of a plastic substrate dyed with a sublimable dye. In addition, since the fine print pattern is formed on the adhesive layer or the diffusion preventing layer, it is difficult to falsify the image without erasing the fine print pattern. Further, various chemical and mechanical damages such as scratch resistance, abrasion resistance and solvent resistance can be prevented.

Further, if the fine print pattern is provided with fluorescent ink, magnetic ink or the like, the effect of preventing tampering is improved.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments.

(Example 1) Composition of transfer foil used in the present invention <Composition of coating for release layer and surface protective layer> 10 parts by weight of polymethyl methacrylate (glass transition point: 105 ° C) (BR manufactured by Mitsubishi Rayon Co., Ltd.) -80) Teflon powder 1 part by weight Toluene / 2-butanone (1/1) 40 parts by weight

<Composition of Adhesive Layer Coating> 10 parts by weight of vinyl chloride-vinyl acetate copolymer (glass transition point: 65 ° C.) (Slec A manufactured by Sekisui Chemical Co., Ltd.) 2- (2′-hydroxy-5 ′) -Methylphenyl) -benzotriazole 2.5 parts by weight Toluene / 2-butanone (1/1) 40 parts by weight

The release layer paint was applied on a 12 μm-thick polyethylene terephthalate film using a gravure coater to a dry weight of 2.5 / m ² and dried to form a release layer. Using gravure ink (trade name: VCH, 79 grass, manufactured by Toyo Ink Mfg. Co., Ltd.)
The fine print pattern was printed by the gravure printing method. Further, the adhesive layer paint was applied on the layer by a gravure coater so that the dry weight was 1.8 g / m ² , and dried to form an adhesive layer, thereby producing a transfer foil.

Each color of yellow, magenta and cyan was transferred and dyed on a polyvinyl chloride substrate by a sublimation transfer ribbon using a color thermal printer. The transfer foil is coated on this dyed surface with a laminator (MS Pouch H, manufactured by Meiko Shokai Co., Ltd.).
-140) to laminate at 150 ° C. for 2 seconds to remove the base film. In addition. The sublimation transfer ribbon is a 6 μm-thick polyester film coated with a three-color sublimation ink composed of a dye and polyvinyl butyral, and the yellow dye is Kacet Yellow.
AG (manufactured by Nippon Kayaku Co., Ltd.), magenta dye is Kaya
Cet Red (manufactured by Nippon Kayaku Co., Ltd.) and cyan dye is HSB9 (manufactured by Mitsubishi Kasei Co., Ltd.). As described above, a plastic dyed product having a cross section shown in FIG. 1 was obtained.
The transfer foil is peeled between the base film and the release layer / surface protective layer, and the release layer / surface protective layer becomes the surface protective layer 4.

(Example 2) <Composition of the anti-diffusion layer coating> Nitrocellulose 10 parts by weight (Cellline FM200 manufactured by Daicel Chemical Industries, Ltd.) Toluene / 2-butanone (1/2) 85 parts by weight

Example 1 was prepared using a gravure coater on a polyethylene terephthalate film having a thickness of 12 μm.
Of the release layer / surface protective layer paint used in step 2.5
² and dried to form a release layer, and a gravure ink (trade name: G, manufactured by Toyo Ink Mfg. Co., Ltd.)
NC-ST39 indigo) to print a fine print pattern by a gravure printing method. On the layer, the above-mentioned paint for the diffusion preventing layer was applied using a gravure coater so that the dry weight was 0.8 g / m ² , and dried to form a diffusion preventing layer. Further, the paint for the adhesive layer used in Example 1 was applied on the layer using a gravure coater so as to have a dry weight of 1.8 / m ² , and dried to form an adhesive layer, thereby producing a transfer foil.

The transfer foil thus obtained was laminated on a vinyl chloride substrate dyed with a sublimation dye under the same conditions as in Example 1, and the base film was removed. A dyed product was obtained.

(Embodiment 3) In the same manner as in Embodiment 2, the printing position of the fine print pattern is set on the diffusion preventing layer.
Was obtained. It should be apparent that the transfer foil according to the present invention is not limited to a plastic film, but can be applied to any plastic material dyed with a sublimable dye.

[0029]

By using the plastic dyed material of the present invention, chemical and mechanical damage of the dyed image can be prevented, and falsification can be prevented by the fine pattern. If a special ink such as a fluorescent ink or a magnetic ink is used for the fine print pattern, the falsification prevention effect is further improved.

[0030]

[Brief description of the drawings]

FIG. 1 is a schematic sectional explanatory view showing an embodiment of the present invention.

FIG. 2 is a schematic sectional explanatory view showing another embodiment of the present invention.

FIG. 3 is a schematic sectional explanatory view showing another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Plastic base material 2 ... Sublimation dye 3 ... Adhesive layer 4 ... Surface protection layer 5 ... Diffusion prevention layer 6 ... Fine pattern

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁷ Identification code FI C09D 201/00 D06P 1/16 D06P 1/16 B41M 5/26 101A (56) References JP-A-3-159794 (JP, A JP-A-1-225596 (JP, A) JP-A-3-159796 (JP, A) JP-A-3-15995 (JP, A) JP-A-5-8557 (JP, A) JP-A-4- 338595 (JP, A) JP-A-4-265789 (JP, A) JP-A-4-221689 (JP, A) JP-A-5-139024 (JP, A) (58) Fields investigated (Int. ⁷ , DB name) D06P 5/00 B32B 33/00 B41M 5/38 D06P 1/16

Claims (2)

(57) [Claims] 1. A plastic whose surface is dyed with a sublimable dye.
On the surface of the base material, an adhesive layer, a diffusion preventing layer of a sublimable dye and
It is formed by sequentially laminating a surface protective layer, and on the adhesive layer or
A dyed product obtained by forming a fine pattern on the diffusion preventing layer. 2. The method according to claim 1, wherein the fine pattern is a fluorescent ink or a magnetic ink.
2. The dyeing according to claim 1, wherein the printing is performed with
Color things.