JP2004232148A - Water-repellent thermal transfer sheet and transfer method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thermal transfer sheet further excellent in water resistance and light resistance by preventing color toner image of the transfer sheet transferred on T shirt, etc., from exposing onto the surface, in the thermal transfer sheet in which transfer of image is carried out by opposing a peeled surface of a resin film peeled from a base material onto the surface of T shirt, etc. and pressing these faces with a heated pressing iron from above these faces. <P>SOLUTION: The thermal transfer sheet is constituted of a layer (a) formed of a dried coated film in which a solvent-based polyurethane resin is applied to a base material in which a silicone layer is formed on one surface, a layer (b) in which an aqueous ink-receiving layer made of an urethane resin and obtained by mixing a water-soluble polyurethane resin with 15 pts.wt. titanium oxide, 50 pts.wt. porous silica mixed product and thermoplastic powder as a dried coated film on the layer (a) and a layer (c) in which a dried coated film coated with an urethane resin in which a porous silica-mixed product and thermoplastic powder, etc., are mixed is formed on the layer (b). <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is to receive an aqueous ink mainly used in an ink jet printer or the like, which is one of the electronic image forming apparatuses, on a thermal transfer sheet, and heat and press with an iron or the like from above to form a plastic resin layer on the surface. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal transfer sheet in which the surface of a cover and a thermal transfer sheet is water-repellent and has water resistance and light resistance, and a method for transferring the same.
[0002]
[Prior art]
In recent years, the tendency of individualization has been particularly advanced, and it has been necessary to produce various kinds of small lots of products. However, since the manufacturing cost is suppressed, it is a major issue how to easily produce a pattern or a figure to be formed on a cloth surface such as a T-shirt at a low cost. Therefore, an electronic image forming apparatus is used as a printing method that satisfies this requirement, a predetermined image is projected on the thermal transfer sheet by this apparatus, and the thermal transfer sheet is applied to the cloth ground and pressed at a high temperature using an iron or the like. You can print.
[0003]
In this case, the image can be easily created by a computer, and the created image is output from the electronic image forming apparatus and transferred to the thermal transfer sheet. By the way, as a technique of this kind, "a method for manufacturing a toner image receptor" disclosed in JP-A-3-48860, "a method for printing an electronic image and a thermal transfer sheet" described in JP-A-9-87980, and JP-A-10-325087. And the like, "a method for producing a printed matter using a thermal transfer sheet using an electronic image forming and outputting apparatus" and the like have been conventionally known.
[0004]
The above-mentioned “method of manufacturing a printed matter using a thermal transfer sheet using an electronic image forming output device” is such that the transfer layer is made of a polyurethane resin which is heated and melted, and is peeled off from the transfer sheet substrate, and the peeled surface is used for a T-shirt or the like. This is a method in which heat transfer is performed by applying a heated iron in this state to face the transfer target surface.
According to this method, the color toner image is cut into the resin layer, and at the same time, the adhesive layer is firmly adhered to the transfer object in an anchor-like manner. The texture is also good.
[0005]
As described above, when the thermal transfer sheet on which the predetermined pattern is formed is ironed in a state facing the object to be transferred, the color toner bites (impregnates) into the resin layer. It is exposed on the surface. Then, the exposed color toner fades little by little with the number of washings, and fades due to direct exposure to strong sunlight for a long time.
[0006]
[Problems to be solved by the invention]
As described above, the conventional printing method has the above problems. The problem to be solved by the present invention is this problem, and by preventing the surface of the color toner image of the transfer sheet transferred to the transfer object, a heat transfer sheet having more excellent water resistance and light resistance can be obtained. A transfer method is provided.
[0007]
[Means for solving the problem]
The thermal transfer sheet according to the present invention is an a layer formed by a dry coating film in which a solvent-based polyurethane resin is applied to a base material having a silicone layer formed on one surface, a water-soluble polyurethane resin mixed with 15 parts of titanium oxide and porous silica. B-layer in which a water-based ink receiving layer made of a urethane resin mixed with 50 parts and a thermoplastic powder is formed as a dry coating film, and a dry coating in which a porous silica mixed product and a urethane resin mixed with a thermoplastic powder are coated It is composed of a layer c on which a film is formed.
[0008]
Then, the base material is peeled off, and the surface that has been peeled off is thermally transferred with the surface to be transferred facing. That is, the resin film is peeled off from the base material with a finger, the peeled surface is placed facing a transfer target (for example, a black T-shirt), a release paper is applied to an upper portion, and a high-temperature heated iron is applied to press strongly. Then, the thermoplastic powder on the surface of the transfer sheet is crushed and melted on the surface of the porous silica that has absorbed the aqueous ink, and the aqueous ink receiving layer is sandwiched by a water-repellent resin film that forms a single plastic layer. As a result, washing resistance and light resistance are improved. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.
[0009]
【Example】
FIG. 1 is a sectional view showing a thermal transfer sheet according to the present invention. This thermal transfer sheet is composed of an a layer, a b layer, and a c layer. 104.7 g / m ² of art paper (trade name: Tokishi Art) manufactured by Mitsubishi Paper Mills was coated with silicone (trade name: KS603) manufactured by Shin-Etsu Chemical Co., Ltd. using a silk screen printing machine, and a dry coating film of 8 g / m ² was applied. Was formed. Using a single-sided silicone paper made by this method as a base material, a solvent-based polyurethane resin manufactured by Dainippon Ink Co., Ltd. (product surface: Chrisbon AH500) is applied onto the silicone-coated surface to form a dry coating film having a thickness of 40 μm. Form. This is the layer a constituting the thermal transfer sheet.
[0010]
Next, a water-soluble polyurethane resin manufactured by Dainichi Seika Kogyo Co., Ltd. (trade name: Seikaprene UD710) was mixed with 15 parts of titanium oxide and 50 parts of a porous silica mixed product of Dainippon Ink Co., Ltd. (trade name: Pateracol IJ150) and Tokyo Ink Co., Ltd. A water-based ink receiving layer made of a urethane resin mixed with a thermoplastic powder or the like (powder resin having an average particle size of 44 μm) is formed as a dry coating film. The thickness is 25 μ, and this becomes the b layer of the thermal transfer sheet.
[0011]
Further, a urethane resin containing a mixture of porous silica mixed with Pateracol IJ100 manufactured by Dainippon Ink and a thermoplastic powder manufactured by Tokyo Ink (powder resin average particle size: 44 μm) was applied to the coated surface and dried by 25 μm. Form a coating. This is the c layer of the thermal transfer sheet.
[0012]
By the way, by applying the above-mentioned dried coating film on the surface layer, a difference occurs in specific gravity, and the porous silica (black circle) made of mineral, which is an aqueous ink receiving portion, is made of a plastic powder having a light specific gravity before drying. It sinks much below the thermoplastic powder (white polygon) that is the body, and the thermal transfer sheet shown in FIG. 1 is formed.
[0013]
Therefore, when an image is output from the above thermal transfer sheet with an ink jet printer PM-800 manufactured by Epson Corporation, the aqueous ink is absorbed by the porous silica through the thermoplastic powder and a clear image is formed on the sheet.
[0014]
The sheet on which a clear image has been formed is peeled off from the transfer sheet substrate, and thermal transfer is performed with the peeled surface facing the transfer surface as shown in FIG. That is, the resin film is peeled off from the base material with a finger, and the peeled surface is placed so as to be opposed to an object to be transferred (for example, a black T-shirt). Remove the release paper by pressing strongly for 20 seconds. Therefore, the thermoplastic powder on the transfer sheet surface is crushed and melted on the surface of the porous silica that has absorbed the aqueous ink, and the aqueous ink receiving layer is sandwiched by a water-repellent resin film that forms a single plastic layer. It becomes a form, and washing resistance and light resistance improve.
[0015]
When the thermal transfer sheet shown in FIG. 1 is output as an image by the ink jet printer PM-800, the thermal transfer sheet is fed by a paper feeding device. At this time, the leading end is peeled off from the silicone layer and rolled up. Then, as shown in FIG. 3, the silicone layer can be fixed to the front end side edge without the silicone layer to prevent the curling up. Here, as shown in FIG. 1, the thermal transfer sheet includes an a layer, a b layer, and a c layer.
[0016]
As described above, the thermal transfer sheet of the present invention has an a layer formed of a dry coating obtained by applying a solvent-based polyurethane resin to a base material having a silicone layer formed on one surface, a water-soluble polyurethane resin having 15 parts of titanium oxide and a porous layer. B layer formed as a dry coating film of a water-based ink-receiving layer made of urethane resin mixed with 50 parts of porous silica mixed product and thermoplastic powder, and urethane resin mixed with porous silica mixed product and thermoplastic powder etc. It is composed of a layer c having a dried coating film formed thereon, and the following effects can be obtained.
[0017]
【The invention's effect】
With the thermal transfer sheet according to the present invention, a desired image is printed out by an inkjet printer. In this case, the water-based ink is absorbed by the porous silica through the thermoplastic powder, and a clear image is formed on the sheet. Then, the resin film is peeled off from the base material, placed against a transfer target object such as a black T-shirt, placed on a release paper, and pressed by a heated iron, so that the resin film is placed on the surface of the transfer target object. Pasted in.
[0018]
Here, the thermoplastic powder on the transfer sheet surface is crushed and melted on the surface of the porous silica that has absorbed the aqueous ink, and a single plastic layer is formed. This constitutes a form in which the water-based ink receiving layer is sandwiched by a water-repellent resin film, and the washing resistance and light resistance are greatly improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a thermal transfer sheet according to the present invention.
FIG. 2 shows a case where a thermal transfer sheet is attached to a T-shirt.
FIG. 3 is a sectional view showing a thermal transfer sheet according to the present invention.

Claims (3)

In a thermal transfer sheet that transfers by pressing the surface of the resin film peeled off from the substrate to the surface of the transfer target object such as a T-shirt and the like by pressing with a heated iron from above, a silicone layer is applied to one side. A layer formed of a dried coating film obtained by applying a solvent-based polyurethane resin to a base material on which is formed, 15 parts of titanium oxide and 50 parts of a porous silica mixed product of a water-soluble polyurethane resin and a thermoplastic powder on the a layer Layer in which a water-based ink receiving layer made of a urethane resin mixed with a body and the like is formed as a dry coating film, and a urethane resin mixed with a porous silica-mixed product and a thermoplastic powder is applied on the b layer, and then dried. A water-repellent thermal transfer sheet comprising a layer c having a coating film formed thereon. 2. The water-repellent thermal transfer sheet according to claim 1, wherein the one side edge of the substrate has no silicone layer. A heat transfer method in which a predetermined design or the like is transferred by pressing the surface of the resin film peeled off from the base material to the surface of the object to be transferred such as a T-shirt and the like with the heated iron from above. In the thermal transfer sheet to be used, an a layer formed of a dried coating film obtained by applying a solvent-based polyurethane resin to a base material having a silicone layer formed on one side, and a water-soluble polyurethane resin and 15 parts of titanium oxide on the a layer Layer b formed as a dry coating film of a water-based ink receiving layer made of urethane resin mixed with 50 parts of a porous silica mixed product and thermoplastic powder, and a porous silica mixed product and thermoplastic It is composed of a c layer on which a dry coating film formed by applying a urethane resin mixed with a powder or the like is formed, and the resin film is peeled off from the substrate on the surface of the object to be transferred by peeling the substrate. Peeled The thermoplastic powder on the transfer sheet surface is crushed and melted on the surface of the porous silica that has absorbed the aqueous ink, and one sheet of paper is released. A water-based ink-receiving layer sandwiched by a water-repellent resin film having a plastic layer formed thereon.

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