JP2991357B2 - Image transfer method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of transferring a sublimable or evaporable dye to a dye substrate having excellent antifouling properties. More specifically, an original image drawn using a sublimable or evaporable dye, and a fluororesin film having a light transmittance of 30% or more laminated on a substrate having the dye and the dye, or After contacting the dyed substrate on which the coating layer of the base resin is formed with the fluorine resin surface or the fluorine coating surface, and further superimposing the dye impermeable cover on the opposite surface to the contact surface of the base,
The present invention relates to a transfer method, wherein the original is transferred to the dyed substrate by heating at a temperature of at least 90 ° C. lower than the melting point of the fluororesin to sublimate or evaporate the dye.

[0002]

2. Description of the Related Art A method of forming an image on a fluorine-based film having excellent antifouling properties has not been practiced so far. Usually, an image is printed on an easily printable vinyl chloride resin sheet or the like, and the vinyl chloride sheet is printed. Only a method of bonding a film of a polyvinylidene fluoride resin having thermal adhesiveness or a method of overlaying a fluorine film on a printed sheet with an adhesive or the like has been adopted. In addition, the heat bonding method has a limitation on the fluorine film that can be used. On the other hand, in the case of an overlay, there is a problem that a step of bonding after printing is required, which is complicated.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method for easily forming an image on a fluorine-based film having excellent antifouling properties.

[0004]

[Means for Solving the Problems] In view of such circumstances,
The present inventors have conducted intensive studies to solve various problems for forming an image on a material having excellent antifouling properties, and as a result, a fluorine-based film having a light transmittance of 30% or more on a dyeable substrate It is found that such a problem can be solved by stacking or coating a fluororesin, bringing an original image drawn with a dye having a sublimation or evaporating property into contact therewith, and heating and transferring the original image. ,
The present invention has been completed. That is, the present invention, when transferring a dye having a sublimation or evaporative property to a stained substrate excellent in stain resistance, an original image drawn using a sublimable or evaporable dye, and the dye A fluororesin film having a light transmittance of 30% or more laminated on a dyeable base material or a dyed base material having a fluororesin coating layer formed thereon is coated with a fluororesin film surface or a fluororesin coating surface. After contacting, further, the dye-impermeable cover is overlaid on the opposite side of the contact surface of the substrate, and then heated at a temperature of 90 ° C. or lower than the melting point of the fluorine-based resin, to remove the dye. An image transfer method for sublimation or evaporation is provided.

According to the present invention, a clear and durable image can be easily formed on a substrate having a film or a coating layer of a fluorine-based resin having excellent surface stain resistance.

Examples of the dyes used in the present invention include dyes such as azo, anthraquinone, quinophthalone, styryl, di or triphenylmethane, oxazine, triazine, xanthene, methine, azomethine, cyclidine and diazine. Specifically, 1,4-ditylaminoanthraquinone, 1,5-dihydroxy-4,8-diamino-anthraquinone bromide or chloride, 1,4-diamino-2,3-dichloro-anthraquinone, 1-amino-hydro Oxy-anthraquinone, 1-amino-4-hydroxy-2- (β-methoxy-ethoxy) -anthraquinone, 1-amino-4
-Hydroxy-2-phenoxy-anthraquinone, methyl, ethyl, propyl, butyl ester of 1,4-diamino-anthraquinone-2-carboxylic acid,
1-amino-4-anilide-anthraquinone, 1-amino-2-cyano-4-anilide (or cyclohexylamino) -anthraquinone, 1-hydroxy-2-
(P-acetoamino-phenylazo) -4-methylbenzene, 3-methyl-4- (nitrophenylazo) -pyrazolone, 3-hydroxy-quinophthalone and the like are preferably used. As the basic dye, malachite green, dye modified with methyl violet, sodium acetate, sodium ethate, sodium methylate, or the like can be used. A functional material such as an ultraviolet absorber or an antioxidant having sublimation or vapor deposition properties can be mixed and used as the dye.

[0007] Sublimable or evaporable dyes and substrates having dyeability which can be used in the present invention include:
Any substrate may be used as long as it has a dyeing property to the dyeing agent, but a substrate such as a film, a sheet, or a fiber made of a polyester resin, a polyamide resin, a polyurethane resin, or the like is preferable. A substrate obtained by coating or laminating a permeable material such as a dye on such a dyeable substrate can also be used as the substrate.

The fluororesin used in the present invention is not particularly limited as long as it is a fluororesin having a melting point. For example, polyvinyl fluorolide, polyvinylidene fluorolide, polychlorotrifluoroethylene, ethylene chlorotrifluoroethylene, Copolymers such as a copolymer of trafluoroethylene and perfluoro (alkyl vinyl ether) and a copolymer of tetrafluoroethylene and hexafluoropropene can be used. Two or more of these fluorine resins which are soluble in a solvent may be used as a mixture and dissolved.
Other additives such as a plasticizer, a dye, an ultraviolet absorber and an antioxidant may be added to these resins by a conventional method.

As the impermeable cover used in the present invention, a film or sheet of polytetrafluoroethylene, polydimethylsiloxane or the like is preferable, and a metal sheet can also be used.

Thus, in order to transfer images, characters, patterns, etc. to a material having excellent antifouling properties by the method of the present invention, first,
An original image is created by drawing using the staining agent according to a conventional method. For example, an original image can be obtained by an ordinary printing technique, coating technique, paint technique, or the like using an ink, a paint, a toner, a developer, or the like containing a sublimable or evaporable dye. Preferably, a method of directly forming an electrostatic image by applying an electric field to the electrostatic recording medium using monochrome and color electrostatic plotters of a wet electrostatic recording system is used. When an electrostatic plotter is used, an electrostatic latent image corresponding to a pattern recorded as data on a computer is directly recorded on an electrostatic recording medium, and an image can be output.

[0011] The obtained original is coated with a sublimable or evaporable dye and a dyeable base material with a light transmittance of 30%.
As described above, preferably, a dye-based substrate in which 50% or more of a fluorine-based resin film is laminated, for example, a polyvinyl fluoride film is bonded to a polyester film by a polyester urethane-based adhesive, and is brought into contact with the surface of the dye-based substrate. Further, the stain-impermeable cover is overlaid on the surface of the substrate opposite to the contact surface. Then, the original is 90 ° C., preferably 60 ° C. below the melting point of a fluororesin, for example, polyvinyl fluoride.
The heating is performed at a temperature lower than or equal to a lower temperature for a short time, for example, 10 to 60 seconds. By this method, a dye passes through the polyvinyl fluoride film to dye the polyester film and form a clear image. In order to efficiently form an image on the dyed substrate, the image formation may be performed under reduced pressure or continuously using a hot roll, a heat belt, or the like. An image can be formed in the same manner when a dyed substrate provided with a fluorine resin coating layer is used instead of the fluorine film.

After forming an image, a film or sheet further containing or coated with a functional material such as a sublimable or evaporable ultraviolet absorber or antioxidant is brought into close contact with the surface of the product and heated. Then, the functional material can be added to the dyed substrate.

[0013]

EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.

Example 1 A polyvinyl fluoride film (trade name; 25 μm thick) containing an ultraviolet inhibitor was prepared by using an ester-modified polyurethane adhesive on a 30 μm thick polyester film.
Tedlar, manufactured by DuPont, melting point 190 ° C, light transmittance 7
5%) was obtained. Using an electrostatic plotter (trade name: EP-01, manufactured by Matsushita Electric Transmission Co., Ltd.), a sublimable dye (Disp-Blue as a blue dye)
-56, Sublimation temperature 210 ° C, Disp as yellow dye
-Yellow-8, a sublimation temperature of 200 ° C, and a developer containing Disp-Red55 sublimation temperature of 180 ° C as a red-based dye) using an electrostatic recording paper (trade name: PP-130,
An electrostatic image was obtained on Oji Paper Co., Ltd.). The above-described electrostatic image is superimposed on the fluorine surface of the obtained laminate film, and a polytetrafluoroethylene sheet (trade name; manufactured by DuPont) is superimposed on the electrostatic recording paper. When thermal transfer was performed using a hot press under heating conditions, a clear transfer image was obtained. Further, the obtained transferred image was 100
When the 0 hour irradiation test was performed, the ΔE value was 2.5,
The fading property was good.

Example 2 A copolymer film of tetrafluoroethylene and ethylene (trade name: NEOFLON) plasma-treated with a 30 μm-thick polyvinyl chloride sheet using the ester-modified polyurethane-based adhesive used in Example 1 ETFE, manufactured by Daikin Co., Ltd., melting point: 260 ° C., light transmittance: 90%) were laminated to form a laminate film. As in Example 1, an image was obtained on electrostatic recording paper using a sublimable dye.
The Teflon sheet is further superimposed on the fluorine image of the laminate film on the obtained electrostatic image,
When a heat transfer was performed under heating conditions of 10 ° C. for 30 seconds, a clear transfer image was obtained.

Example 3 Polyvinylidene fluoride terpolymer (fluorene, Nippon Synthetic Rubber Co., Ltd.) which is a fluororesin for solvent-soluble paint in vinyl chloride tarpaulin of polyester fiber cloth having a thickness of 1 mm (Melting point 90 ° C., light transmittance 91%). An image was obtained on electrostatic recording paper using the same apparatus and a sublimable dye as in Example 1. The above-mentioned Floren-coated surface was superimposed on the obtained image, and a Teflon sheet was further superimposed on both surfaces, and heated and transferred under heating conditions of 150 ° C. for 3 minutes, whereby a clear transferred image was obtained.

Example 4 Graft polymer of polyvinylidene fluoride, which is a solvent-soluble fluorine-based resin in vinyl chloride tarpaulin made of 1-mm-thick polyester taffeta, and fluororubber (trade name: SEFLAL SOFT, Central Glass Co., Ltd.) Co., Ltd., melting point: 165 ° C., light transmittance: 50%) was dissolved in a solvent and coated to a thickness of 30 μm after drying. An image was obtained on the electrostatic recording using the same apparatus and a sublimable dye as in Example 1. Lay the coating surface on top of the obtained electrostatic image,
The Teflon sheet is superposed on both sides and 150 ℃ -6
When a heat transfer was performed under the heating condition of 0 second, a clear transfer image was obtained.

[0018]

As described above, according to the present invention, it is possible to easily form a clear and durable image on a substrate having a film or a coating layer of a fluorine-based resin having excellent surface stain resistance. Is useful.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B41M 5/38-5/40 B44C 1/17

Claims (2)

(57) [Claims] When transferring a sublimable or evaporable dye to a dye-substrate excellent in antifouling property, an original image drawn by using a sublimable or evaporable dye is used for sublimating or evaporating. The dyeing agent and a dyeing substrate obtained by laminating a fluororesin film having a light transmittance of 30% or more on a dyeable substrate on the fluororesin film surface, and further on the surface of the substrate opposite to the contact surface. An image transfer method, wherein the dye-impermeable cover is overlaid and then heated at a temperature of at least 90 ° C. lower than the melting point of the fluororesin to sublimate or evaporate the dye. 2. The method according to claim 1, further comprising the steps of: transferring a sublimable or evaporable dye onto the dye substrate having excellent antifouling property; The dyeing agent is brought into contact with a dyeing substrate having a fluororesin coating layer formed on a dyeable substrate such that the light transmittance is 30% or more on the fluororesin coating surface, and After the dye-impermeable cover is overlaid on the surface opposite to the surface, the dye is sublimated or evaporated by heating at a temperature of at least 90 ° C. lower than the melting point of the fluororesin. Image transfer method.