JPH02103147A - Transfer printing method to bottle container and transfer printing label - Google Patents

Abstract

PURPOSE:To increase the protection of a printing layer and to eliminate possibility damaging an object to be printed due to the irradiation with ultraviolet rays by a method wherein a transfer printing label is brought into contact with the object to be printed and subsequently heated and contracted to perform transfer in a close adhesion state and the resin layer of said label is irradiated with ultraviolet rays to be cured before the base film of the label is released from the interface with the resin layer or after said film is released and removed. CONSTITUTION:A transfer printing label 6 is externally applied to an object 8 to be printed and adhered (temporarily adhered) to the surface of the object 8 to be printed. Thereafter, the transfer printing label 6 is heated to temp. imparting no thermal damage to the object 8 to be printed to thermally shrink the base film 1 of the label 6, and the label 6 is irradiated with ultraviolet rays. Ultraviolet rays penetrate the base film 1 to irradiate the resin layer 2 of the label 6 to cure the same. Thereafter, when the base film 1 is released from the interface with the resin layer 2, the tough printing layer 4 whose surface is protected by the cured resin layer 2 is transferred to the outer surface of the object 8 to be printed. When the resin layer 2 is not cured, the base film 1 is released and, thereafter, the resin layer 2 is directly irradiated with ultraviolet rays to be cured.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for transfer-printing a desired print onto a bottle container, etc., and a transfer-printing label used therein.

(Prior Art) Conventionally, as means for performing transfer printing on bottles and containers, there are means described, for example, in Japanese Patent Publication No. 59-20469 and Japanese Patent Application Laid-Open No. 63-151694.

In these conventional means, as shown in FIG. 10, a transfer printing label 6e having a printing layer 4e provided on one side of a heat-shrinkable base film 1 is attached to the surface of a printing object 8 via an adhesive layer 5e or the like. The label 6e is then heat-shrinked to bring the base film 1 and the printing layer 4e into close contact with each other along the surface shape of the printing target 8, and then the base film 1 is attached to the printing layer 4e and the printing target. It is peeled off from the object 8.

According to this means, even if the surface of the printing object 8 is a three-dimensional curved surface, the printing layer 4e can be properly adhered to the surface, and the print finish is better than the means of directly printing on the printing object 8. It's much cheaper in terms of size.

(Problems to be Solved by the Invention) However, in the conventional means, since the printing layer 4e coated with ordinary printing ink is simply adhered to the surface of the printing object, the printing layer 4e is This paper had the disadvantage that it was soft and very easily damaged, and when printing objects were handled, they were easily damaged and peeled off, deteriorating their appearance.

In addition, JP-A No. 63-151694 describes a method of applying a glaze to the surface of the printing layer 4e transferred to the printing object 8 and then firing it at a high temperature as a means for protecting the printing layer 4e. ing. However, this method cannot be applied to resin containers that do not have heat resistance, and has the disadvantage that the work of applying the glaze in a separate process is extremely complicated.

Moreover, as another means for protecting the printed layer 4e, it is also possible to separately provide in advance a hard protective film layer on the transfer printing label 6e to protect the printed layer 4e. However, if a hard protective film layer is provided on the birch label for transfer printing, when the label for transfer printing is heat-shrinked, the hard protective film layer will prevent the film from shrinking, causing damage to the base film and printing. The layer cannot be brought into close contact with the surface of the object to be printed. Furthermore, even if the film could be shrunk, it would cause cracks in the protective film layer and would not function as a protective film. Therefore,
This does not solve the above-mentioned problems.

Therefore, even if the printing object is made of a material with poor heat resistance, the present invention provides a robust printing layer that does not cause thermal damage to the printing object, has a good print finish, and is not easily damaged. The purpose is to perform transfer printing on a printing object using simple working means.

(Means for Solving the Problems) The present invention is for adhering a printing layer to an object to be printed, and then curing the printing layer without heating or protecting the printing layer using a hard layer. The above-mentioned conventional problems are attempted to be solved by setting the hard layer in a soft state in advance to birch, which does not interfere with the heat shrinkage of the transfer printing label.

That is, in the first transfer printing method according to the present invention, a printing layer for decoration is applied to a resin layer 2 made of an uncured ultraviolet curable resin provided on one side of a heat-shrinkable base film 1. A transfer printing label 6 formed by polymerizing 4,
After contacting the surface of the printing object 8 such as a bottle container, the transfer printing label 6 is heated and shrunk to tightly transfer the printing layer 4 onto the surface of the printing object 8, and then the transfer printing label 6 is This is a method of curing the resin layer 2 by irradiating the resin layer 2 with ultraviolet rays before or after peeling and removing the base film 1 from the interface with the resin layer 2.

Further, a second transfer printing method according to the present invention is a transfer printing method in which a printing layer 4a for printing with ultraviolet curable printing ink is provided in an uncured state on one side of a base film 1 having heat-shrinkable properties. After the label 6a for printing is brought into contact with the surface of the object 8 to be printed such as a bottle container, the label 6a for transfer printing is heated and shrunk to closely transfer the El printing layer 4a to the surface of the object 8 to be printed, and then This is a method of curing the printing layer 4a by irradiating the printing layer 4a with ultraviolet rays before or after peeling and removing the base film 1 of the limb transfer printing label 6a from the interface with the printing layer 4a.

(Function) Therefore, in the first transfer method, when the transfer printing label 6 brought into contact with the printing object 8 is heat-shrinked, the uncured resin layer 2 is a birch material that prevents the heat shrinkage. This thermal contraction allows the printing layer 4 to be transferred to the surface of the printing object 8 in close contact with the surface. Further, when the resin layer 2 is then irradiated with ultraviolet rays and the resin layer 2 is cured, the surface of the printing layer 4 that is in close contact with the surface of the printing object 8 is covered and protected by the cured resin layer 2. It will be done.

Furthermore, in the second transfer method, if the transfer printing label 6a brought into contact with the printing object 8 is heated and shrunk,
The uncured printing layer 4a adheres to the surface of the printing object 8 as the base film 1 shrinks.

Transcribe. Furthermore, by irradiating the hindlimb printing layer 4a with ultraviolet rays, the printing layer 4a can be cured while remaining in close contact with the surface of the printing object 8, improving its durability.

(Example) Examples of the present invention will be described below.

(First Example) First, an example of the transfer printing label according to the present invention will be explained. In FIG. 1, 1 indicates a base film having heat-shrinkable properties formed in a rectangular or band shape. . 2 is an ultraviolet curable resin coated and formed on the surface side of the base film 1 (for example, Dainichiseika Kagyo Co., Ltd.'s product name Seirybeam EXF-
100 medium), and the resin layer 2 is not yet cured. 3 indicates a release layer provided between the resin layer 2 and the base film 1.

Reference numeral 4 denotes a printing layer with a design formed by printing a desired pattern on the surface side of the resin layer 2, and this printing is applied to the base film 1.
Since it can be carried out by setting it in a flat state, it can be applied to gravure printing, etc., which has excellent printing reproducibility. 5 is the printing layer 4
Shows a pressure-sensitive or heat-sensitive adhesive layer applied to the surface of the

In addition, when using the transfer printing label 6 having the above structure, for example, both ends 7 and 7a of the base film 1 are polymerized and sealed as shown by the two-dot chain line in FIG. It is formed into a cylindrical shape located inside.

Next, to explain the transfer printing method using the cylindrical transfer printing label 6, first, as shown in FIG. The label 6 is attached to the printing object 8 such as a bottle or container made of oil, and the label 6 is attached to the printing object 8 using the adhesive layer 5.
Contact and adhere (temporarily adhere) to the surface of

Thereafter, the transfer printing label 6 is heated at a temperature that does not cause thermal damage to the printing object 8 (for example, around 100° C.), and the base film 1 is thermally shrunk as shown in FIG. 3. Since the resin layer 2 applied to the base film 1 is in an uncured state, the resin layer 2 does not hinder the shrinkage of the base film 1, and the resin layer 2 is in an uncured state. It deforms as the film 1 shrinks and deforms. Therefore, the base film 1 and the printing layer 4 are in close contact along the outer surface of the printing object 8, and even if the printing object 8 has a cubic curved shape, the printing layer 4 can be reliably brought into close contact with the surface. It is.

After that, the label 6 is irradiated with ultraviolet rays. Since the ultraviolet rays pass through the base film 1 and are irradiated onto the resin layer 2, the resin layer 2 is thereby cured. Therefore, if the base film 1 is then peeled off from the interface with the resin layer 2 as shown in FIG. The printed layer 4 will be transferred. Note that there is no risk that the printing object 8 will be damaged by the ultraviolet irradiation.

In addition, although in the said Example, the base film 1 was peeled after hardening the resin layer 2, this invention is not limited to this. For example, when the resin layer 2 is uncured, the base film 1 may be peeled off from the resin layer 2 and the outer surface of the printing object 8, and then the resin layer 2 may be irradiated with direct ultraviolet rays to be cured.

In either procedure, the surface of the printed layer 4 can be protected by the hardened resin layer 2.

(Second Embodiment) Next, the second embodiment of the present invention will be described.
A is a printed layer printed and coated on the surface of a heat-shrinkable base film 1 via a release layer 3, and the printed layer 4a is coated with an ultraviolet curing printing ink (for example, manufactured by Toka Color Industries Co., Ltd.). hard coat ink) into a desired pattern using an appropriate printing means such as gravure printing. Therefore, in this embodiment, an ultraviolet curable resin layer as in the first embodiment is not separately provided. Moreover, the printed layer 4a is in an uncured state. 5 is an adhesive layer applied to the surface of the printing layer 4a.

In the transfer printing method using the transfer printing label 6a having the above configuration, first, the base film 1 of the label 6a is formed into a cylindrical shape in the same manner as in the first embodiment, and then the base film 1 of the label 6a is fitted onto the printing target 8. The hindlimb label 6a is heated. Even in this case, since the printing layer 4a has not yet been cured, it comes into close contact with the outer surface of the printing object 8 as the base film 1 shrinks due to heat, as shown in FIG.

Next, as shown in FIG. 7, the base film 1 of the label 6a is peeled off from the interface with the printed layer 4a and the printed layer 4a is transferred to the printing object 8 side, or the base film 1
The printed layer 4a is cured by irradiating the printed layer 4a with ultraviolet rays while still being adhered to the printing target 8.

As a result, the printed layer 4a itself becomes very hard and is formed as a robust printed layer that is not easily damaged by contact with other articles.

(Other Examples) In the first and second examples described above, the adhesive layer 5 and the release layer 3 are provided on the surface of the transfer printing label 6.6a, or the base film 1 is formed into a cylindrical shape. Although formed and used, the invention is in no way limited thereto.

For example, when the printing layer 4 itself is adhesive, or when the cylindrical base film 1 is designed to be fitted onto the printing object 8 in a fixed position. etc., it is not necessarily necessary to provide the adhesive layer 5 for temporarily attaching the transfer printing label 6 to the printing object 8.

Similarly, if the resin layer 2 or the printed layer 4a can be printed and applied to the base film 1 with a relatively weak adhesive force, there is no need to separately provide a release layer 3 on the surface of the base film 1. .

Therefore, in the present invention, as shown in FIG. 8(a), the base film 1
The resin layer 2 and the printing layer 4 are simply provided on one side by polymerization, or the printing layer 4a made of ultraviolet curable printing ink is simply provided on the base film 1 as shown in (0) in the same figure. It may be something.

In the case of the transfer printing label 6 provided with the resin layer 2, it goes without saying that the printing layer 4 may be formed using ultraviolet curable printing ink.

Furthermore, in the present invention, as shown in FIG. 9, a rectangular transfer printing label 6 may be adhered as it is to the outer surface of the printing object 8 to perform the transfer printing operation, and the base film 1 may be formed into a cylindrical shape. It is not necessary to do so.

However, it goes without saying that the cylindrical base film 1 may be one that is originally formed into a cylindrical shape, other than a belt-shaped film sealed into a cylindrical shape.

The specific structure of the transfer printing label 6゜6a according to the present invention can be freely changed in design, and the specific structure of the printing layer 4a made of thermosetting 1 sardine layer 2 and ultraviolet curable printing ink can be changed. There is no question about the ingredients.

Further, although the printing layer can be printed in fine detail by gravure printing, the specific printing method is not limited, and various other printing methods such as screen printing and offset printing can be applied.

Further, in the transfer printing method according to the present invention, the specific ultraviolet irradiation means and the heating means for the transfer printing label are not limited.

In addition, the specific type of printing object 8 of the present invention is not limited to the synthetic resin bottle container as in the above embodiment, but can be applied to transfer printing on the surfaces of various other articles.

(Effects of the Invention) As shown in the above, the present invention allows the transfer printing label to be brought into contact with the object to be printed while the ultraviolet curable resin layer or printing layer provided on the transfer printing label remains uncured. Since the resin layer and the like do not cause any hindrance to the shrinkage of the base film, the shrinkage of the base film allows the printing layer to be brought into close contact with the surface of the printing target.
After that, the ultraviolet curable hard layer or printed layer is cured by irradiating the ultraviolet rays, so the surface of the printed layer can be protected by the hardened layer or the hardness of the printed layer itself can be As a result, the printing layer transferred to the printing object can be made more robust.

As a result, according to the transfer method according to the present invention, not only can the protection of the printed layer be strengthened without requiring the troublesome effort of applying glaze to the surface of the printed layer as in the past, but also As long as it is made of a material that does not cause damage to objects and can withstand the heat shrinkage temperature of the base film, it can be applied to various printing objects and its uses can be expanded, and its practical effects are great.

In particular, the method of providing an ultraviolet curable resin layer separately from the printing layer has the advantage that the surface of the printing layer can be covered with a hard resin layer, which provides better protection of the printing surface. be.

Further, the transfer printing label according to the present invention can be appropriately used in implementing the transfer printing method according to the present invention, and has the effect of being excellent in practicality.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a first embodiment of a transfer printing label according to the present invention. 2 to 4 show a transfer printing method using the same label, with FIG. 2 being a perspective view, and FIGS. 3 and 4 being sectional views. FIG. 5 is a sectional view showing a second embodiment of the transfer printing label according to the present invention. FIGS. 6 and 7 are cross-sectional views showing a transfer printing method using the same label. 8 and 9 show other embodiments of the present invention, FIGS. 8(a) and 8(0) are cross-sectional views of a label for transfer printing, and FIG. 9 is a perspective view of the transfer printing operation state. FIG. 10 is a sectional view showing a conventional example. 1... Base film 2. Elbow fat layer 4.4a.
...Printing layer 6, 6a...Transfer printing label 8.
...Printed object applicant Fuji Seal Industry Co., Ltd. Agent Patent attorney Noboru Fujimoto Noboru Noboru 1 m2

Claims (1)

[Claims] 1. A printing layer 4 for decoration is provided by polymerizing a resin layer 2 made of an uncured ultraviolet curable resin provided on one side of a heat-shrinkable base film 1. After the transfer printing label 6 is brought into contact with the surface of a printing object 8 such as a bottle container, the transfer printing label 6 is heated and shrunk to tightly transfer the printing layer 4 onto the surface of the printing object 8. , Then, before or after peeling and removing the base film 1 of the transfer printing label 6 from the interface with the resin layer 2, the resin layer 2 is removed.
A method for transfer printing onto bottles, containers, etc., characterized in that the resin layer 2 is cured by irradiating it with ultraviolet rays. 2. A transfer printing label 6a in which a printing layer 4a for painting using ultraviolet curable printing ink is provided in an uncured state on one side of a heat-shrinkable base film 1 is attached to a printing object 8 such as a bottle or container. After the transfer printing label 6a is brought into contact with the surface of the transfer printing label 6a, the printing layer 4a is closely transferred to the surface of the printing object 8 by heating and shrinking the transfer printing label 6a, and then the base film 1 of the transfer printing label 6a is attached to the printing layer. A method for transfer printing onto bottles, containers, etc., characterized in that the printed layer 4a is cured by irradiating ultraviolet rays to the printed layer 4a before or after peeling off from the interface with the printed layer 4a. 3. A resin layer 2 coated with an uncured ultraviolet curable resin is provided on one side of a heat-shrinkable base film 1 and is separable from the base film 1, and the resin layer 2 is separable from the base film 1. A label for transfer printing, characterized in that a printing layer 4 for decoration is polymerized and provided on the surface side of the label. 4. A printing layer 4a for painting using ultraviolet curable printing ink is provided on one side of the heat-shrinkable base film 1 in an uncured state so that it can be peeled off from the base film 1. Labels for transfer printing. 5. The transfer printing label according to claim 3 or 4, wherein the base film 1 is formed into a cylindrical shape with a printing layer disposed on the inner surface thereof.