JPS597598B2 - Transfer method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer method, and particularly to a transfer method to a plastic sheet, container, etc. whose back surface is coated with an aluminum vapor-deposited film.

Conventionally, methods for forming multicolor designs on plastic sheets or containers include, for example, direct printing with dye or pigment-containing ink, (2) sublimation, in which only the dye in the ink layer is transferred using sublimable dye-containing ink. transfer printing method,
(3) There is a heat transfer printing method in which the entire ink layer is transferred using pigment-containing ink.

However, method (1) has poor pattern reproducibility and low efficiency for curved objects such as three-dimensional containers. In addition, method (2) transfers only the dye in the ink layer during transfer, so the transfer time is long, and since the transfer paper is only brought into contact with the object to be transferred, the pattern may become blurred and Bleeding was likely to occur and the efficiency was poor. In addition, method (3) is a method in which the entire ink layer is transferred when transferring, but since the entire ink layer is transferred from the base material, the transferred pattern becomes convex and the transferred pattern is beautiful. The wear resistance was also poor.

An object of the present invention is to provide a transfer method that allows designs to be easily and efficiently formed on flat as well as cylindrical plastic sheets or containers.Another object of the present invention is to provide a transfer method that can easily and efficiently form patterns on flat or cylindrical plastic sheets or containers. To provide a transfer method for forming a deep penetrating image on a sheet or container made of transparent or translucent resin coated with a film.

That is, the present invention provides, on a base material made of a thermoplastic plastic film, an acrylic resin and a cellulose resin that are releasable to the base material, and two or more kinds of sublimable disperse dyes having different dye penetration rates. An ink layer with a desired design is formed on the ink layer, and then an acrylic resin is made of an acrylic resin that has thermal adhesion to the resin that can be dyed with the dye and does not inhibit the color development of the dye. A transfer sheet coated with a resin adhesive layer is brought into close contact with the surface of a sheet or container made of a transparent or translucent resin dyeable with the above dye, the back side of which is coated with an aluminum vapor-deposited film, and heated. from the transfer sheet to the surface of the sheet or container,
By transferring the resin adhesive layer and the ink layer and then dry heating, the sublimable disperse dye in the ink layer is penetrated into the transparent or translucent resin of the sheet or container, and then the surface of the sheet or container This is a transfer method characterized by removing the upper resin adhesive layer and ink layer.

Next, the present invention will be explained in detail with reference to the drawings.

As shown in FIG. 1, the base material 1 of the transfer sheet A is a thermoplastic plastic film. Specifically, thermoplastic films such as polyester, polyethylene, cellophane, and polyimide are used. On this base material 1, an ink layer 2 with a desired pattern is formed, which includes an acrylic resin and a cellulose resin that are releasable to the base material 1, and two or more kinds of sublimable disperse dyes having different dye penetration rates. form.
In order to form the ink layer 2, each monochrome ink containing a sublimable disperse dye with a different dye penetrance is prepared for each dye, and multicolor printing is performed in several times, or the dye penetrant It is possible to prepare a mixed ink containing two or more kinds of sublimable disperse dyes with different values and print it at once, or to print it separately depending on the purpose. Further, a sublimable disperse dye is a disperse dye that exhibits sublimation property by heat, and is a dye conventionally used in sublimation transfer printing methods and the like. When such a dye is applied to an object to be dyed and heated, it internally diffuses and permeates into the object because the dye has sublimation properties. Dye penetrance refers to the degree to which a dye internally diffuses and permeates into the dyed object. A dye that has high penetration into the dyed object under the same conditions is called a dye with a high dye penetrance. A dye with a low penetration rate and a high proportion remaining on the surface is called a dye with a low dye penetration rate. Specifically, as sublimable disperse dyes with high dye penetration, Diaceritonpic B1 Diaceritonpic R
1 Diaceritone Frill Yellow-5GE1 Diaceritone Violet 3R (manufactured by Mitsubishi Kasei Co., Ltd.) Miketone Polyester Pink FF3B (manufactured by Mitsui Toatsu Co., Ltd.), Sumikalon Yellow 1 E-FG (manufactured by Sumitomo Chemical Co., Ltd.), Kaya Set Blue 1 FR (manufactured by Nippon Kayaku Co., Ltd.), and other sublimable disperse dyes with low dye penetration are Kaaron Polyester Light Yellow-6GSF1 Chikaraaron Polyester Lightlet BF
(manufactured by Nippon Kayaku Co., Ltd.), Sumikalon Brilliant Blue-SBLl Sumikalon Brown S/5RL (manufactured by Sumitomo Chemical Co., Ltd.), and the like. Further, printing means include gravure printing, offset printing, and other appropriate printing methods.

Furthermore, since the ink does not contain any substances that would deteriorate its performance as a printing ink, the reproducibility of the design is good. Finally, a resin adhesive layer 3 made of acrylic resin is coated to cover the ink layer 2 by an appropriate means such as gravure printing, offset printing, or silk screen printing. This resin adhesive layer 3 is mainly made of acrylic resin, which has thermal adhesion to a resin that can be dyed with a sublimable disperse dye and does not inhibit the color development of the dye. As described above, the transfer sheet A used in the present invention is created.

Next, as shown in FIG. 2, the sheet or container 5, which is the object to be transferred according to the present invention, has an aluminum vapor-deposited film 4 with a thickness of about 600.8 to 800.8 cm on the back surface. The transparent or semi-transparent resin is made of a transparent or semi-transparent resin that can be dyed with the above dyes.
Specifically, there are polyester, epoxy, polycarbonate, urethane, acrylic, nylon, polyamide, methyl methacrylate, polyacrylic acid ester, polyvinyl butyral, and the like.

Next, as shown in FIG.
The resin adhesive layer 3 of the transfer sheet A is brought into close contact with the surface of the sheet or container 5 made of a transparent or translucent resin that can be dyed with the dye and heated. Then, the resin adhesive layer 3 and the ink layer 2 are transferred onto the surface of the sheet or container 5.

Next, as shown in FIG. 4, by dry heating, two or more types of sublimable disperse dyes having different dye penetration rates in the ink layer 2 are transferred to the transparent or translucent resin of the sheet or container 5, respectively. The penetrating image 6 is formed by penetrating the surface and inner surface of the pen, forming a deep penetrating image 6.

Next, as shown in FIG. 5, the resin adhesive layer 3 and ink layer 2 remaining on the surface of the sheet or container 5 are physically removed by cloth polishing, or an organic solvent such as xylol is removed. , toluene, methyl ethyl ketone, etc., or a mixed solvent thereof. In addition, if necessary,
In order to protect the surface of the sheet or container 5, increase the depth and three-dimensional effect of the penetration image 6, and give it gloss, etc., as shown in FIG. Alternatively, a transparent or semitransparent resin layer 7 made of the same type of transparent or semitransparent resin as the resin of the container 5 is formed.

Although the transfer method of the present invention is completed through the above steps, the following method is available as an alternative method. That is, on a base material made of thermoplastic plastic film, a release layer made of an acrylic resin and a cellulose resin that has releasability to the base material is formed, and on the release layer, an acrylic resin and a dye penetrant are applied. An ink layer with a desired design is formed containing two or more sublimable disperse dyes with different degrees of strength, and then on the ink layer, the ink layer has thermal adhesion to a resin that can be dyed with the dye, and A sheet made of a transparent or translucent resin that can be dyed with the above dye and has a transfer cynote coated with a resin adhesive layer made of an acrylic resin that does not inhibit the color development of the above dye, and an aluminum vapor-deposited film on the back side. Alternatively, the resin adhesive layer, ink layer, and release layer are transferred from the transfer sheet to the surface of the sheet or container by closely contacting the surface of the container and heating, and then the ink layer is transferred by dry heating. Transfer characterized by infiltrating the sublimable disperse dye inside into the transparent or translucent resin of the sheet or container, and then removing the resin adhesive layer, ink layer and release layer on the surface of the sheet or container. It's a method.

To explain in more detail with reference to the drawings, as shown in FIG. 7, the base material 8 of the transfer sheet B is a thermoplastic plastic film as in the first method.

On this base material 8, a release layer 9 made of acrylic resin and cellulose resin that exhibits releasability with heat and pressure is applied to the base material 8 by appropriate means such as gravure printing, offset printing, silk screen printing, etc. , apply and form.
An ink layer 10 with a desired design containing an acrylic resin and two or more kinds of sublimable disperse dyes having different dye penetration rates is formed on this release layer 9, and then an acrylic ink layer 10 is formed so as to cover the ink layer 10. A resin adhesive layer 11 made of resin is applied and formed by an appropriate method such as gravure printing, offset printing, or silk screen printing. Similar to the first method, this resin adhesive layer 11 is made of an acrylic resin that has thermal adhesion to a resin that can be dyed with a sublimable disperse dye and does not inhibit the color development of the dye. is mainly used.

Resin adhesive layer 11 of transfer sheet B created as above
As shown in FIG. 8, the surface of a sheet or container 12 (FIG. 8 shows the sheet) made of a transparent or translucent resin that can be dyed with the above dye and has an aluminum vapor-deposited film 13 on the back surface. By closely contacting and heating, the resin adhesive layer 11, ink layer 10, and release layer 9 are transferred from the transfer sheet B to the surface of the sheet or container 12. In the following, as in the first method, by dry heating, two or more sublimable dyes having different dye penetration rates in the ink layer 10 are applied to the surface of the transparent or translucent resin of the sheet or container 12, respectively. and penetrates into the inner surface, forming a penetration image with depth and three-dimensional effect.

Next, the resin adhesive layer 11, ink layer 10, and release layer 9 remaining on the surface of the sheet or container 12 are physically removed by cloth polishing or chemically dissolved and removed using an organic solvent. . The second method of the present invention is thus completed. Because the present invention has the above-mentioned configuration, it is possible to paint transparent resin materials of various shapes easily and with good reproducibility compared to conventional methods, and it is possible to efficiently create multicolor designs with excellent tone reproducibility. It can be applied to

Furthermore, since two or more sublimable dyes with different dye penetration rates are used, the different dyes are sorbed onto the surface and inner surface of the transparent resin, and are reflected on the aluminum metal surface. Top, mixed color of different dyes,
The design consists of a single dye color with a high dye penetration rate and a mixed color of different dyes, which are layered in this order, forming a deep penetration image. Moreover, since the back surface of the sheet or container is coated with an aluminum vapor-deposited film, it is possible to paint a transparent resin material with a beautiful metallic luster with a three-dimensional effect, and the practical effects of the present invention are great. It is. This will be explained in more detail with reference to the following two examples. (Example 1) A biaxially stretched polyester film (thickness: 25 μm) was used as a base material, and a desired pattern was printed on the surface of the film by gravure printing using an ink having the composition shown below.

Next, a resin adhesive having the composition shown below was applied to the entire surface of the ink layer by gravure printing, and dried to form a resin adhesive layer to prepare a transfer sheet.

On the other hand, a cosmetic container made of a 350μ thick polyester sheet with aluminum vapor deposition on one side was prepared as a transfer object.The transfer sheet was then preheated to about 160°C using a roll transfer machine for hot stamping. Temporary transfer was carried out by thermocompression bonding to the container.

The transfer conditions were 180°C for 10 seconds. Thereafter, the base polyester film was peeled off. Next, the temporarily transferred cosmetic container was dry-heated at 230° C. for 60 seconds in a drying oven to dye the dye into the transparent resin. At that time, the area close to the surface of the transparent resin was dyed orange, and the inside of the transparent resin, that is, the area close to the aluminum vapor deposited layer, was dyed yellow, forming a beautiful penetration image with a three-dimensional effect and metallic luster. Thereafter, in order to make the transparent resin surface glossier, cloth polishing was applied to the transparent surface side to remove the resin adhesive and ink remaining on the transparent resin surface. The cosmetic container obtained by the above method has extremely high commercial value because it has a three-dimensional effect and a penetrating image with metallic luster.

(Example 2) Using a biaxially stretched polyester film (thickness 25μ) as a base material, a release layer precursor having the following composition was applied to the entire surface by gravure printing, and then dried to form a release layer, Next, a desired pattern was gravure printed using ink with the following composition and dried to form an ink layer.Next, the resin adhesive used in Example 1 was applied to the entire surface of the ink layer using a gravure printing method, and dried. A transfer sheet was prepared by forming a resin adhesive layer.

Next, it was transferred to a cosmetic container made of a polyester sheet with aluminum vapor deposition used in Example 1 under the same conditions as in Example 1, and then dry heating and cloth polishing were performed in the same manner. A similar cosmetic container could be obtained.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1, FIG. 7 are explanatory diagrams of a transfer sheet used in the present invention, and FIG.
Figures 4 and 8 are explanatory diagrams for explaining the transfer method, Figure 2 is an explanatory diagram of the transferred object before being transferred, and Figures 5 and 6 are
The figures each show an explanatory diagram of the transcript obtained by the present invention. A, B...Transfer sheet, 1,8...Base material, 2,10...Ink layer, 3,11...
...Resin adhesive layer, 4, 13... Aluminum vapor deposited film, 5, 12... Sheet or container, 6...
...Penetration image, 9...Peeling layer, 7...
...Transparent or translucent resin layer.

Claims (1)

[Claims] 1. On a base material made of a thermoplastic film,
An ink layer with a desired pattern is formed on the base material, and includes an acrylic resin and a cellulose resin that are releasable to the base material, and two or more types of sublimable disperse dyes having different dye penetration rates, and then an ink layer is formed on the ink layer. Then, a transfer sheet is coated with a resin adhesive layer made of an acrylic resin that has thermal adhesion to the resin that can be dyed with the dye and does not inhibit the color development of the dye, and the back side is coated with an aluminum vapor-deposited transfer sheet. The resin adhesive is applied from the transfer sheet to the surface of the sheet or container by closely contacting the surface of a sheet or container made of a transparent or translucent resin that can be dyed with the dye and heated. The sublimable disperse dye in the ink layer is transferred into the transparent or translucent resin of the sheet or container by transferring the layer and the ink layer, and then dry heating to penetrate the sublimable disperse dye in the ink layer into the transparent or translucent resin of the sheet or container, followed by resin adhesion on the surface of the sheet or container. A transfer method characterized by removing an agent layer and an ink layer. 2. On the base material made of thermoplastic plastic film,
A release layer made of an acrylic resin and a cellulose resin that has releasability to the base material is formed, and on the release layer,
An ink layer with a desired design containing an acrylic resin and two or more types of sublimable disperse dyes with different dye penetration rates is formed, and then, on the ink layer, a resin that can be dyed with the above dye is heated. A transfer sheet is coated with a resin adhesive layer made of an acrylic resin that has adhesive properties and does not inhibit the color development of the dye, and an aluminum vapor-deposited film is applied to the back side.
By closely contacting the surface of a sheet or container made of a transparent or translucent resin that can be dyed with the dye and heating, the resin adhesive layer, the ink layer and the transfer sheet are transferred from the transfer sheet to the surface of the sheet or container. Transfer the release layer, then dry heat to infiltrate the sublimable disperse dye in the ink layer into the transparent or translucent resin of the sheet or container, and then apply the resin adhesive layer on the surface of the sheet or container. , a transfer method characterized by removing an ink layer and a release layer.