JPH08108610A - Hydraulic transfer paper - Google Patents

Abstract

PURPOSE: To provide hydraulic transfer paper for which it is unnecessary to produce a printing block to form a transfer image separately, wherein manufacturing manhour for the transfer paper may be reduced and a light material as a mount may be employed. CONSTITUTION: Hydraulic transfer paper is used for transferring an electron copied image (toner image) by a method wherein the electron copied image is floated on the surface of the water by making the electron copied image peel off from a mount, and a transferred body is made to abut against the undersurface of the electron copied image. Then a peeling layer 13, adhesive agent layer 15, image holding layer 19 and electron copied image layer 21 are laminated in order on the surface of the mount (base paper) 11 having water permeability.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to hydraulic transfer paper.
More specifically, the present invention relates to a hydraulic transfer paper used for transferring an electronic copy image by peeling an electronic copy image (toner image) from a mount and floating it on the water surface, and bringing a transfer target body into contact with the lower surface of the electronic copy image.

[0002]

2. Description of the Related Art Hydraulic transfer is widely used for ceramic, glass, metal, and plastic molded products because painting can be easily and easily performed on various molded products having a three-dimensional surface or curved surface due to unevenness.

As one method of hydraulic transfer, a transfer paper (printing surface) on which a print surface layer of a reverse image having adhesiveness is formed on a water-soluble / water-swellable support with or without a surface protective layer If the layer has poor adhesiveness, transfer paper on which an adhesive layer is further formed) is floated on water with the printing surface layer facing up, and the transfer target is pressed from above to transfer the printing surface layer to the transfer target. There is a method of removing the support. (JP-A-1-15
0599 / 2-11789 / 4-431004-1
As another hydraulic transfer method, a method of the following constitution which does not require formation of a reversal image is disclosed in Japanese Patent Publication No.
No. -4590 is proposed.

"A transfer paper formed by pasting a backing paper on the coating surface is floated on the liquid surface, the backing paper is removed from the coating surface to leave only the ink coating surface on the liquid surface, and the transferred object is A transfer method characterized in that it is applied to the lower surface of the coating film surface and then projected onto the liquid surface so that the coating film surface is attached to the surface of the transfer target. "

[0005]

However, when trying to paint a prototype or a small-volume product by any of the above methods, it is necessary to raise the printing plate one by one, which is troublesome.

Further, when a transfer image is formed (usually screen printing), each color is printed and dried, so that the number of man-hours for manufacturing the transfer paper increases, the difference between the dry and wet expansion / contraction of the support (mounting paper) is small, and multicolor printing is performed. It must have enough strength to withstand a certain weight as a mount (in the case of plain paper,
It was necessary to use paper of 150 g / m ² or more).

In view of the above, the present invention does not need to raise the plate for forming a transferred image, and
An object of the present invention is to provide a transfer paper which can reduce the number of manufacturing steps of the transfer paper and can use a light paper as a mount.

[0008]

In order to solve the above-mentioned problems, the present inventors formed an image layer by electronic copying (color copying) instead of the printing surface layer in the process of earnestly developing. We thought about what it could do and came up with a hydraulic transfer paper having the following structure.

On the surface of a water-permeable backing paper (base paper), a peeling layer mainly composed of a water-soluble resin, an adhesive layer having adhesiveness to the transferred material, an image holding layer to which an electronic copy image is attached, and
A hydraulic transfer paper characterized in that electronically copied image layers are sequentially laminated.

[0010]

EXAMPLES Next, the present invention will be described in detail based on examples.

(1) Basically, a water-permeable mount (base paper)
The peeling layer 13, the adhesive layer 15, the image holding layer 19, and the electronic copy image layer 21 are sequentially laminated on the surface of 11. (Refer to FIG. 1) Here, the mount 11 is made water-permeable by interposing the peeling layer 13 between the mount 11 and the transfer layer 23 (the adhesive layer 15, the image holding layer 19, the electronic copy image layer 21). This is because it is easy to peel off.

The weight of the mount 11 is usually 50 to 11
0 g / m ² (desirably, 70~90g / m ²⁾ to. Electronic copy (color copy) at less than 50 g / m ^2.
If it exceeds 110 g / m ² , it is difficult to obtain one of the effects of the present invention (reduction of the weight of the mount 11) and the mount 11 is too thick to make electronic copying difficult.

The peeling layer 13 temporarily adheres the mount 11 and the transfer layer 23 until the transfer layer 23 is floated on water at the time of painting (transferring), and is adhesive to both the mount 11 and the adhesive layer 15. There is no particular limitation as long as it has For example, as the water-soluble resin that is the main component of the release layer 13, dextrin, polyvinyl alcohol, gelatin, glue,
Casein, shellac, starch, protein, polyacrylic acid amide, polyvinyl methyl ether, copolymer of methyl vinyl ether and maleic anhydride, polyvinylpyrrolidone, acetyl cellulose, acetyl butyl cellulose, carboxymethyl cellulose, methyl cellulose,
Those mainly composed of hydroxymethyl cellulose, sodium alginate, etc. can be used, and the thickness of the release layer 13 is usually
The thickness is 10 to 100 μm, preferably 30 to 70 μm.

The adhesive layer 15 has a function of adhering to the transferred material 25 at the time of transfer (painting), and it is desirable to select an adhesive to be used according to the material of the transferred material 25. For example, when the transferred material 25 is glass, ceramics, or metal, epoxy resin, urethane resin,
It is desirable to use a resin based on a one-pack type thermosetting resin such as melamine resin, urea resin, phenol resin, unsaturated polyester. Depending on the material to be transferred 25, vinyl acetate resin, vinyl chloride, or a rubber pressure-sensitive adhesive can be used. Among these, "1300" manufactured and sold by Seiko Advance Co., Ltd.
"Series" can be preferably used.

The adhesive layer 15 is an opaque layer (usually white) or a transparent layer (usually colorless) depending on the required transfer mode, and its thickness is usually 10 to 100 μm, preferably 30 to 70 μm. To do. When it also serves as an image holding layer described later, it is 30 to 150 μm, preferably 60 to 100 μm.
μm.

The image holding layer 19 may also serve as the adhesive layer 15, but it is usually formed of a different material from the viewpoint of improving the adhesiveness of the electronically copied image, which will be described later, and preventing the electronically copied image from cracking. To do.

The material for forming the holding layer 19 is not particularly limited as long as it is a resin that has good compatibility with the toner forming the electronic copy image layer 21 and good adhesiveness with the adhesive layer 15. Resins, acrylic resins, alkyd resins, vinyl acetate-vinyl chloride copolymers, etc. can be used. Among these, in particular, a polyester resin which is a base resin of the screen printing ink "Sericor EG ink series" manufactured and sold by Teikoku Ink Mfg. Co., Ltd. can be preferably used.

The image holding layer 19 is an opaque layer (white or chromatic color) or a transparent layer (colorless or chromatic color) depending on the required transfer mode, and the thickness is usually 10 to 100 μm.
m, preferably 30 to 70 μm.

The electronic copy image layer 21 is formed on the mount 11.
The laminated paper on which the peeling layer 13, the adhesive layer 15, and the image holding layer 19 are sequentially formed is formed as a copy paper 27 through an electronic copying machine (usually a color copying machine). The formation of each layer on the mount 11 is usually performed by a coating process.
Here, as the coating means, spray coating, roller coating,
It may be applied by brush or the like, but solid printing may be used by screen printing, gravure printing or the like.

At this time, the electronic copy image can form a color image at a time without the step of printing and drying one color at a time as in the case of forming a conventional print layer, and therefore the mount 1
Even if 1 is thin, there is no risk of color misregistration or paper breakage due to the difference between dry and wet expansion and contraction as in the conventional case. Also, if there is only one base paper, there is no need to specially raise the plate.

The method of electronic copying may be dry (cascade method, magnetic brush method, aerosol method, conductive magnetic toner method, etc.) or wet method (liquid developing method, mist developing method, etc.), but wet electronic If the release layer peels off after copying,
I can not use it.

(2) Next, a usage mode of the hydraulic transfer paper will be described. (See FIGS. 2 to 3) First, the transfer layer 23 is peeled off from the mount 11 and the transfer layer 23 is removed.
Float on the water. Specifically, when the transfer paper 17 is floated on water with the electronic copy image facing upward, the water penetrates the release layer through the mount 11 and the release layer 13 dissolves.
By sliding and removing, the transfer layer 23 can be easily floated on the water surface.

Then, the transferred material 25 is applied to the lower surface of the transfer layer 23 floating on the water surface W to raise it, or water is discharged to process the liquid surface, and the transferred material 25 is placed on the liquid surface. Make it protrude.

Here, the transfer layer 23 adheres to the surface of the transferred body 25 due to surface tension and gravity. After that, the adhesive layer 15 is dried and, if necessary, the adhesive layer 15 is heated and cured. Thus, the transfer is completed.

(3) A hydraulic transfer paper having the following specifications was prepared and hydraulically transferred to a glass cup (transfer target) 25,
It was cured under the condition of 0 ° C. × 30 minutes and painted. Even if the painted portion of the glass cup was strongly scratched with a nail, it did not come off.

Mount 11 ... Fine paper (Y-eye), weight: 70 g
/ M ² Release layer 13 ... Dextrin type, thickness: 20 μm Adhesive layer 15… Seiko Advance's “1300 series” Thickness: 40 μm Image holding layer… Teikoku Inksha's “Sericol EG” carrier resin (polyester type), thickness : 30 μm image forming method ... “A color 631” manufactured by Xerox Co., Ltd.

[0027]

As described above, the water pressure transfer paper of the present invention has a release layer, an adhesive layer, an image holding layer and an electronic copy image layer sequentially laminated on the surface of a water permeable backing paper (base paper). With such a configuration, the following operational effects are exhibited.

(1) Since the transfer image layer is formed not by printing but by electronic copying (electronic copying image layer), it is not necessary to raise the plate one by one when there is one base paper as in printing.

(2) For the same reason as above, it is not necessary to print and dry one color at a time as in printing, and a color image can be formed at one time, so the number of man-hours for manufacturing transfer paper can be greatly reduced, and at the same time, printing can be performed. As described above, since it is not necessary to consider color misregistration due to dry and wet expansion and contraction and paper tearing during printing, a light mount can be used.

[Brief description of drawings]

FIG. 1 is a sectional view showing the structure of a transfer paper of the present invention.

FIG. 2 is a schematic cross-sectional view showing a transfer method using the transfer paper of the present invention.

FIG. 3 is a partial cross-sectional view of a product painted with the transfer paper of the present invention.

[Explanation of symbols]

 11 Mount 13 13 Release Layer 15 Adhesive Layer 19 Image-Retaining Layer 21 Electronic Copy Image Layer 23 Transfer Layer 25 Transfer Target

Claims (4)

[Claims] 1. A water-permeable backing paper (base paper) having a release layer mainly composed of a water-soluble resin, an adhesive layer having adhesiveness to a transfer target, and an image holding layer to which an electronic copy image is attached, Also, a hydraulic transfer paper comprising electronic copy image layers sequentially laminated. 2. The hydraulic transfer paper according to claim 1, wherein the adhesive layer is mainly composed of a one-pack type thermosetting resin. 3. A release layer mainly composed of a water-soluble resin, an adhesive layer having adhesiveness to a transfer-receiving member, and an image-retaining image to which an electronic copy image is attached, on a surface of a water-permeable mount (base paper). An electronic copying paper for hydraulic transfer paper, characterized in that the layers are sequentially laminated. 4. The electronic copying paper for hydraulic transfer paper according to claim 3, wherein the adhesive layer is mainly composed of a one-pack type thermosetting resin.