JPH0811449A - Sublimation transfer method and sheet - Google Patents

Abstract

PURPOSE:To provide a sublimation transfer method and a sublimation transfer mark using a sublimation transfer sheet of positive printing easy in the adhesion of an article to be transferred. CONSTITUTION:The positive printing of a pattern layer 2 of a character or a picture pattern is applied to the surface of a base material 1 such as a synthetic resin film or paper having gas permeability and a self-adhesive layer 3 is provided to the rear surface of the base material 1 to form a sublimation transfer sheet 4. The sublimation transfer sheet 4 is laminated to the surface of an article W to be transferred and, in this state, the sheet 4 is heated to transmit the sublimable ink of the pattern layer 2 through the base material 1 and the self-adhesive layer 3 to transfer the same to the surface of the article W to be transferred. Thereafter, the sublimation transfer sheet 4 is peeled from the surface of the article to be transferred.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sublimation transfer method and a sublimation transfer sheet used in this method.

[0002]

2. Description of the Related Art Conventionally, there are various types of sublimation transfer sheets. As is well known, as the sublimation transfer method, as shown in FIG. 8, a transfer sheet 13 in which a pattern layer 12 such as various characters and designs is reverse-printed with a sublimable ink on a base material 11 is used. The pattern layer 12 of the sheet 13 is directly brought into contact with the flat surface or the quadric surface of the transferred material W and is heated in a heating chamber while being fixed by an appropriate means, or along the surface of the transferred material. A method of sublimating and transferring the sublimable ink forming the pattern layer 12 of the transfer sheet onto the surface of the transfer target W by pressing and heating with a hot plate has been used for a long time.

However, in sublimation transfer, the adhesion between the transfer sheet and the transferred material greatly affects the sharpness of the transferred pattern and the like. It is difficult to secure the degree of accuracy and it is difficult to perform clear transfer, and various measures for improving this adhesion have been proposed. As one of the typical methods, Japanese Patent Publication Sho 5
There is a method, as disclosed in Japanese Patent Laid-Open No. 5-3153, in which a transfer sheet and an object to be transferred are bonded and heated using a water-soluble adhesive.

Further, as another one, Japanese Patent Publication No. 59-93.
As disclosed in Japanese Patent Laid-Open No. 60, there is a method in which the transfer sheet is sucked and heated while being brought into close contact with the transfer target.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the method of bonding with a water-soluble adhesive of No. 53, transfer to a surface of a simple three-dimensional structure with shallow unevenness is possible, but the sublimable dye (ink) does not dissolve as an adhesive,
A water-soluble adhesive which has a property of transmitting a sublimable dye at the time of heat transfer, solidifies and does not show tackiness when dried, and shows tackiness again when water is added is required. Further, after sublimation transfer, there is also a troublesome problem in terms of work in that the transfer sheet must be peeled off by dissolving the adhesive with water and then the adhesive must be wiped off with a solvent. Further, it is necessary to hold the transfer sheet in pressure contact with the object to be transferred until the water is evaporated and dried to stabilize the adhesion, and even if the transfer sheet is not adhered and may float, the transferred pattern may be blurred.

On the other hand, in the adhesion method by suction of Japanese Patent Publication No. 59-9360, the transferred material, the transfer paper carrying the sublimable dye, and the gas impermeable expansion / contraction on the substrate having a large number of gas permeation holes. Flexible sheets are sequentially stacked and sucked through the gas permeation holes, so that the transfer sheet and the flexible sheet are heated and sublimated and transferred to the transfer target. There is a troublesome problem that a gas impermeable flexible sheet is required, a large number of gas permeation holes are required in the base, and a suction means such as a vacuum pump is also required. Also in this method, the transfer sheet and the surface of the transferred material may partially float and the transferred pattern may be blurred.

In any of the above-mentioned conventional methods, it is necessary to reverse-print the front and back sides of the pattern layer such as characters and designs printed on the transfer sheet.

[0008]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems, in which the pattern layer 2 such as characters and patterns formed on the transfer sheet 4 is not reverse-printed but is made by sublimable ink. The pattern layer 2 is subjected to normal printing (normal image printing), and a pressure-sensitive adhesive layer 3 that is easily peelable is provided on the back surface of the transfer sheet 4, or the self-adhesive property of the transfer sheet itself is used to
It is characterized in that the transfer sheet 4 is attached to a necessary portion of the transfer target W and heated to sublimate the sublimable ink forming the pattern layer 2 of the transfer sheet 4 to transfer the transfer sheet 4 to the transfer target W. It is a sublimation transfer method and a sublimation transfer sheet used in this method.

That is, the first aspect of the present invention is that the surface of the substrate 1 made of synthetic resin film or paper having gas permeability is
The pattern layer 2 such as letters or patterns is normally printed with a sublimable ink, and the pressure-sensitive adhesive layer 3 of the sublimation transfer sheet 4 provided with the pressure-sensitive adhesive layer 3 on the back surface of the substrate 1 is transferred to the transfer target W. By heating while being attached to the surface of the sublimation ink, the sublimable ink of the pattern layer 2 is transferred to the surface of the transfer target W through the base material 1 and the adhesive layer 3, and then the sublimation transfer sheet 4 And a sublimation transfer sheet used in this method.

A second aspect of the present invention is that a sublimable ink is used to form a pattern such as letters or patterns on the surface of a substrate 1a made of a thin synthetic resin film having a mirror-like back surface, self-adhesiveness and gas permeability. By heating the back surface side of the substrate 1a of the sublimation transfer sheet 4 obtained by normal printing of the layer 2 in a state of being bonded to the surface of the transferred material W, the sublimation ink of the pattern layer 2 is formed into a base material. A sublimation transfer method and a sublimation transfer sheet used in this method, wherein the material 1a is transmitted and transferred to the surface of a transfer target W, and then the sublimation transfer sheet 4 is peeled from the transfer target surface.

A third aspect of the present invention is a sublimation transfer sheet 4 which is obtained by directly printing a pattern layer 2 such as letters or patterns on the surface of a substrate 1b made of a printing film itself made of urethane ink with sublimation ink. By heating the back surface side in a state of being bonded to the surface of the transferred material W, the sublimable ink of the pattern layer 2 is transferred to the surface of the transferred material W through the substrate 1b.
After that, the sublimation transfer sheet 4 is peeled off from the surface of the transfer target, and the sublimation transfer sheet used for this method.

A fourth aspect of the present invention is a sublimation transfer method and a sublimation transfer sheet used for the method, which is characterized in that a gas-impermeable protective film 5 is provided on the upper surface of each pattern layer 2.

As the substrate 1 used in the present invention, for example, polyvinyl chloride having a thickness of 25 to 500 μm, polyurethane,
Various gas permeable synthetic resin films such as polypropylene and polyethylene and various papers can be used.

As the sublimable ink for printing the pattern layer 2 having characters or patterns, for example, known sublimable dyes such as disperse dyes and basic dyes, for example, ethyl cellulose,
Cellulose such as cellulose acetate and methyl cellulose, or those formed into ink with a known vehicle such as polyvinyl alcohol and polyvinyl acetate can be used, and the print thickness of these sublimable inks is about 10 to 20 μm.
The degree is enough.

The heating conditions for sublimation transfer in the present invention differ depending on the type of sublimable dye.
It can be selected within the range of 80 ° C to 250 ° C. It should be noted that the heating conditions are greatly influenced not only by the temperature but also by the relationship with the heating time. These are similar to the case of the conventional sublimation transfer. It is set in consideration of color shading).

Further, the pressure-sensitive adhesive layer 3 used in the present invention is a pressure-sensitive one that can be peeled off, and because of the addition of a heating step,
It is preferable that it has low tackiness, heat resistance, and high cohesive force. For example, commercially available self-adhesive sheets, silicone adhesives, two-component acrylic adhesives, etc. can be used, and when adhesives are applied. The thickness is preferably about 10 to 35 μm.

As the gas impermeable protective film 5, for example, a film of polyester, polyvinylidene chloride, polycarbonate or the like can be used.

Further, as the transferred object W, it is possible to transfer not only a flat surface, a quadric surface, but also a cubic curved surface. The material is various plastic molded products, alumite molded products, painted metal. It is possible to transfer the product, various synthetic fibers and papers, glass and ceramics, leather, rubber, wood and the like to the adhesive layer 3 or the film which can be laminated by the self-adhesive property.

[0019]

In the present invention, the characters and patterns on the sublimation transfer sheet are normally printed, so the state of the pattern layer 2 and its positional relationship can be confirmed prior to transfer.

Further, in the present invention, the sublimation transfer sheet 4 is applied to a necessary portion of the transferred material W by the self-adhesive force of the peelable pressure-sensitive adhesive layer 3 on the back surface of the substrate 1 or the substrate 1a or 1b.
To a place where it is necessary like a sticker equipped with a normal pressure-sensitive adhesive layer, without requiring any special adhesion means,
Since they can be bonded and fixed only by pressure bonding, they do not float on the surface of the transferred material W, and uniform adhesion can be obtained.

Particularly, the transfer sheet 4 having the printed film itself made of urethane ink as the substrate 1b is a thin film having a large degree of expansion and contraction, so that it can be easily attached to a cubic curved surface.

In the case where the pressure-sensitive adhesive layer 3 is provided on the surface of the base material 1, since the sublimation of the sublimable ink of the pattern layer 2 by heating is performed through the base material 1 and the pressure-sensitive adhesive layer 3, the same. When heated under the conditions, the color density becomes lighter and the sharpness of the pattern layer is slightly inferior as compared with the case where the pattern layer and the transferred material are in direct contact as in the conventional case, but the heating time is increased. For example, the color becomes darker, and since the adhesiveness is good, the contour of the pattern layer 2 becomes clear, so that a beautiful transfer is possible.

Further, in the case where the gas-impermeable protective film 5 is provided on the upper surface of the pattern layer 2 by the sublimable ink, the sublimation of the ink of the pattern layer 2 to the outside is hindered.
The sublimation rate to the transfer target W side is improved, and a clearer transfer pattern is obtained.

[0024]

【Example】

Example 1 As shown in FIG. 1, on the surface of a substrate 1 made of a polypropylene film having a thickness of 50 μm, Mitsui Toatsu Dyes Co., Ltd. EMS Blue and PS Red were used as sublimation inks mainly composed of dispersible dyes. Using the blended cellulose acetate resin ink, a floral pattern layer 2 was normally printed by a silk screen method to a thickness of 10 μm, and a silicone adhesive 3 (Toshiba Silicone ) Made YR
3286) was printed to a thickness of 15 μm by the silk screen method, and release paper 6 was attached to the surface of the printed sheet to prepare sublimation transfer sheet 4.

After the release paper 6 of the sublimation transfer sheet 4 is peeled off, as shown in FIG. 2, the surface of the pressure sensitive adhesive 3 is pressed against the smooth surface of the material W to be transferred of the ABS resin plate material so as to be adhered thereto. It was placed in an oven and heated at 90 ° C. for 60 minutes. afterwards,
Sublimation transfer sheet 4 by taking out the transferred material W from the oven
When peeled off, the surface of the transferred material W was lighter in color than the original drawing, but was not partially lifted, and a floral pattern pattern having a clear outline could be transferred.

Example 2 As shown in FIG. 3, a gas impermeable layer 20 having a thickness of 20 was formed on the upper surface of the pattern layer 2 of the sublimation transfer sheet 4 shown in FIGS.
After using the protective film 5 made of polyester having a thickness of μm, the release paper 6 was peeled off, the transfer target material W was attached to the transfer material W in the same manner as in Example 1, and heated in an oven. However, it was possible to transfer a floral pattern pattern having a darker and clearer contour than the floral pattern pattern of Example 1.

Example 3 On the surface of a substrate 1 made of a vinyl chloride film having a thickness of 300 μm, a red, yellow and black ink of the SUB series manufactured by Teikoku Ink was used as a sublimation ink mainly composed of a basic dye and silk screened. 10 layers of tree pattern 2 by the method
Double-sided pressure-sensitive adhesive tape 3a (Panak Co., Ltd.) that is printed normally with a thickness of μm and uses an acrylic pressure-sensitive adhesive on the back surface of the substrate 1.
Sublimation transfer sheet 4 was prepared by bonding one side of (AD105).

After removing the release paper on which the double-sided adhesive tape 3a in the sublimation transfer sheet 4 remains, it is pressed against the body of the transferred material W of the iron pipe whose surface is baked and coated with acrylic resin as shown in FIG. The pieces were laminated and put in an oven and heated at 150 ° C. for 20 minutes. After that, when the transferred material W was taken out from the oven and the sublimation transfer sheet 4 was peeled off, a tree pattern having a clear outline was transferred to the surface of the transferred material W, though it was lighter in color than the original drawing but was not partially lifted. .

Example 4 A surface of a substrate 1a made of a soft vinyl chloride film having a thickness of 140 μm and having self-adhesiveness (one-tack sheet manufactured by Nippon Paper Industries Co., Ltd. [preliminarily integrated with release paper]),
As a sublimation ink mainly composed of dispersible dye, a cellulose acetate resin ink containing EMS blue and PS red of Mitsui Toatsu Dyestuff Co., Ltd. was used to form a floral pattern layer 2 with a thickness of 20 μm by a silk screen method. Then, sublimation transfer sheet 4 was created by performing normal printing.

After the release paper of the sublimation transfer sheet 4 is peeled off, the back surface of the sublimation transfer sheet 4 is pressed against the surface of the transferred object W of the iron pipe whose surface is baked and coated with acrylic resin as shown in FIG. And pasted together, this was put in an oven and heated at 120 ° C. for 30 minutes. Then, when the transferred material W was taken out of the oven and the sublimation transfer sheet 4 was peeled off, a clear floral pattern which was lighter than the original drawing but had no partial floating could be transferred to the surface of the transferred material W. .

Example 5 As shown in FIG. 6, a urethane transparent ink (SG-410 manufactured by Seiko Advance Co., Ltd.) was used to coat a thickness of 30 μm on a polyester release coat film 7 having a thickness of 50 μm.
After drying, the printed film itself was used as the substrate 1b, and a small floral pattern layer 2 having a thickness of 10 μm was screen-printed on the upper surface of the printed film by using the same sublimable ink as in Example 1 above. By peeling the pattern layer 2 from the release coat film 7 together with the substrate 1b, a sublimation transfer sheet 4 having a thin self-adhesive property with a mirror-like back surface of the printing film itself and a large degree of expansion and contraction was prepared.

The back surface of the sublimation transfer sheet 4 was partially stretched and pressed so as to be along the surface of the transferred material W of the polypropylene plastic molded product having a cubic curved surface as shown in FIG. . In this state,
The pattern layer 2 having a small floral pattern was partially distorted but was not unsightly. It was then placed in an oven and heated at 120 ° C. for 30 minutes. After that, the transferred material W was taken out of the oven and the sublimation transfer sheet 4 was peeled off. As a result, a clear flower which is lighter in color than the original drawing but is in the same state as when it is attached to the surface of the transferred material W without any partial floating. The pattern could be transferred.

[0033]

According to the present invention, a pattern layer such as a character or a pattern to be transferred is formed by normal printing, and the sublimation transfer sheet can be fixed to a transfer object having a quadric surface or a cubic surface as well as a planar object. The adhesive provided on the back of the sublimation transfer sheet, or the self-adhesive force of the sublimation transfer sheet itself, can be easily and surely fixed in place with the same ease as with conventional sticker application. There is no floating. Therefore, the degree of sublimation of the sublimable ink forming the pattern layer to the transfer target side is indirect.
If the same heating conditions are used, the transfer density will be lighter than in the conventional method,
Since the sublimation transfer sheet has good adhesion to the transferred material,
A great effect that the transferred character or pattern such as a pattern becomes clear is obtained. Further, since the characters and patterns of the normal image, which could not be confirmed until after the transfer in the past, can be confirmed before the transfer, the transfer operation becomes easy.

[Brief description of drawings]

FIG. 1 is a perspective view of an example of a sublimation transfer sheet according to the present invention.

FIG. 2 is an enlarged cross-sectional view showing a state in which the sublimation transfer sheet of FIG. 1 is adhesively fixed to a flat surface portion of an object to be transferred.

FIG. 3 is an enlarged cross-sectional view of another example of a sublimation transfer sheet according to the present invention in a state where the sublimation transfer sheet is adhesively fixed to a flat surface portion of a transfer target.

FIG. 4 is an enlarged cross-sectional view of a sublimation transfer sheet of still another example according to the present invention in a state where the sublimation transfer sheet is adhesively fixed to a quadric surface portion of a transfer target.

FIG. 5 is an enlarged cross-sectional view of a sublimation transfer sheet of still another example according to the present invention in a state where the sublimation transfer sheet is adhesively fixed to a secondary curved surface portion of a transfer target.

FIG. 6 is an enlarged cross-sectional view showing still another example of the sublimation transfer sheet according to the present invention.

FIG. 7 is a perspective view showing a state in which the sublimation transfer sheet of FIG. 6 is adhesively fixed to a third curved surface portion of an object to be transferred.

FIG. 8 is an enlarged sectional view showing a conventional sublimation transfer state.

[Explanation of symbols]

1 Base Material 2 Pattern Layer 3 Adhesive Layer 4 Transfer Sheet 5 Protective Film 6 Release Paper 7 Release Coat Film W Transferee

Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B44C 1/165 K 7361-3K 7267-2H B41M 5/26 101 G

Claims (8)

[Claims] 1. A pattern layer 2 such as letters or patterns is normally printed on the surface of a base material 1 made of a synthetic resin film or paper having gas permeability with sublimable ink, and the back surface of the base material 1 is provided. Is heated with the pressure-sensitive adhesive layer 3 of the sublimation transfer sheet 4 provided with the pressure-sensitive adhesive layer 3 bonded to the surface of the transfer target W, so that the sublimation ink of the pattern layer 2 is A sublimation transfer method, wherein the sublimation transfer sheet 4 is transferred through the material 1 and the pressure-sensitive adhesive layer 3 onto the surface of the transfer target W, and then the sublimation transfer sheet 4 is peeled from the surface of the transfer target. 2. A pattern layer 2 such as letters or patterns is normally printed with a sublimable ink on the surface of a base material 1a made of a thin synthetic resin film having a mirror-like back surface and self-adhesive property and having gas permeability. Substrate 1a of sublimation transfer sheet 4
The sublimable ink of the pattern layer 2 is heated on the substrate 1 by heating the back side of the pattern layer 2 on the surface of the transferred material W.
A sublimation transfer method characterized in that a is transmitted and transferred to the surface of the transfer target W, and then the sublimation transfer sheet 4 is peeled from the surface of the transfer target. 3. A sublimation transfer sheet 4 obtained by directly printing a pattern layer 2 such as letters or patterns on a surface of a substrate 1b made of a printed film itself made of urethane-based ink with a sublimation ink. The sublimation ink of the pattern layer 2 is transferred to the surface of the transfer target W through the substrate 1b by heating while being bonded to the surface of the transfer target W, and then the sublimation transfer sheet 4 is transferred. A sublimation transfer method characterized by peeling from the surface of an object to be transferred. 4. The sublimation according to claim 1, wherein a gas impermeable protective film 5 is provided on the upper surface of the pattern layer 2 such as letters or patterns made of sublimable ink. Transfer method. 5. A pattern layer 2 such as letters or patterns is normally printed with a sublimable ink on the surface of a base material 1 made of a synthetic resin film or paper having gas permeability, and the back surface of the base material 1 is also printed. Is a sublimation transfer sheet having an adhesive layer 3. 6. A pattern layer 2 such as letters or patterns is normally printed with a sublimable ink on the surface of a base material 1a made of a thin synthetic resin film having a mirror-like back surface and self-adhesive property and having gas permeability. Sublimation transfer sheet characterized by the following. 7. A sublimation transfer sheet characterized in that a pattern layer 2 such as letters or patterns is directly printed with a sublimable ink on the surface of a substrate 1b made of a printed film itself made of urethane ink. 8. The sublimation according to claim 5, wherein a gas-impermeable protective film 5 is provided on the upper surface of the pattern layer 2 such as letters or patterns made of sublimable ink. Transfer sheet.