JPH0723271Y2 - Transfer mark - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an improvement of a printing type transfer mark that is tough, durable, and has extremely good transfer workability.

[Conventional technology]

Conventionally, a print-type transfer mark is a thermosetting resin such as liquid epoxy resin or a mixed resin of liquid melamine resin and the like used as a medium (medium) on a mount having a water-soluble glue layer on the surface, and color pigments and the like are mixed therein. And a plastic film-like cover coat layer into which, for example, a silicon resin is mixed and which can be peeled off after heat treatment is laminated on the ink layer. First, the entire transfer mark is soaked in water or a water-containing organic solvent to semi-dissolve the water-soluble glue layer and the backing paper is peeled off, and then the printing ink layer is pressure-bonded to the transfer target, about 60 ° to 100 ° C.
After the printing ink layer is cured by heating at a temperature of ℃, peel off the uppermost cover coat layer, spray the printing ink layer with clear lacquer consisting of a diluting solution of transparent liquid epoxy resin, and print again by printing. The process of fixing the ink layer was common.

In this case, peeling of the cover coat layer is performed together with curing of the printing ink layer, but since the printing ink layer usually does not have a thickness on the left side, curing proceeds across the entire printing ink layer of the same quality, and Since not only the side of the cover coat layer that directly hits the surface but also the boundary surface with the transfer target progresses substantially at the same time, the peeling force of the cover coat layer is larger than the adhesive force of the printing ink layer to the transfer target. In that case, it is inconvenient that the printing ink layer peels off from the transferred material with the peeling of the cover coat, and a method of using an adhesive between the printing ink layer and the transferred material. However, the adhesives that have been conventionally used for non-thermosetting transfer marks and the like have not been suitable for thermosetting transfer marks that are treated at relatively high temperatures because they may deteriorate or become brittle in the future.

[Problems to be solved by the invention]

The present invention has been made in view of such circumstances, and an adhesive layer is provided so that the printing ink layer does not peel off from the transfer-receiving body when the cover coat layer peels off. The adhesive layer is made of a curable medium, and when the cover coat layer is peeled off with a slight time lag between the curing of the printing ink layer and the curing of the adhesive layer, the adhesive layer is still attached to the surface of the transferred material. It is an object of the present invention to provide a printing transfer mark which is in a state and in which the printing ink layer is not peeled off along with the peeling of the coat layer and the inconvenience caused by peeling of the cover coat layer is not caused.

[Means for solving problems]

In order to solve the above problems, the present invention provides a printing type transfer mark in which an adhesive layer, a printing ink layer and a cover coat layer are sequentially laminated on a mount having a water-soluble glue layer on its surface. The printing ink layer is formed by mixing a thermosetting resin as a medium with an organic acid, and c. On the other hand, the adhesive layer is formed by the same medium as the printing ink layer containing no organic acid. D. There is a time lag between the curing of the adhesive layer and the curing of the printing ink layer due to heating. E. Transfer mark.

The present invention will be described below based on embodiments with reference to the drawings.

〔Example〕

First, a conventional printing type transfer mark will be described with reference to FIG. A water-soluble glue layer 22 is provided on the upper surface of the mount 21,
Furthermore, a monochromatic or polychromatic printing ink layer 23 is formed on the upper surface thereof. This ink layer uses a thermosetting resin as a medium (medium), and a coloring pigment is usually mixed therein. The upper surface of the printing ink layer 23 is covered with a cover coat layer 24 formed by coating a silicone resin or the like. The coat layer 24 can be peeled off from the ink layer 23 after the printing ink layer 23 is cured by heating.

The surface of the printing ink layer from which the surface curing has been completed and the cover coat layer has been peeled off is sprayed with a clear lacquer, which is usually a diluting liquid of a liquid epoxy resin, and re-baked to fix the printing ink layer. This process prevents the cured printing ink layer from being directly exposed to air,
Deterioration of the ink layer and damage to the ink layer are prevented.

However, with this kind of transfer mark, it is difficult to peel off the cover coat layer. That is, if it is peeled off too early, the cover coat layer will be forcibly separated from the surface of the printing ink layer, and the surface of the printing ink layer will be damaged.On the other hand, if the time to peeling off becomes excessively long. The above-mentioned clear lacquer coating process is unsuitable because it is delayed and causes dead time in the manufacturing process and waste is increased, and it is most suitable to quickly peel off the cover coat layer when the curing of the ink layer is completed. Has been done.

However, on the other hand, at that time, since the curing is progressing even on the boundary surface with the transfer target, when the force for peeling off the cover coat layer is slightly larger than the adhesive force of the printing ink layer to the transfer target, the cover is removed. With the peeling of the coat layer, there is a problem that the printing ink layer peels off from the transfer target.

FIG. 1 is a sectional view showing a transfer mark according to the present invention.
Mount 11, water-soluble glue layer 12, single-color or multi-color printing ink layer 1
3. The lamination of the cover coat layer 14 is similar to that of the conventional thermosetting transfer mark.

In the transfer mark according to the present invention, the adhesive layer 15 is laminated on the printing ink layer 13 at the boundary surface between the printing ink layer 13 and the transferred material.
Is provided.

Further, the printing ink layer 13 according to the present invention is formed by adding a required portion of an organic acid, for example, paratoluenesulfonic acid, for example, 0.5 to 1% by weight, to a thermosetting resin as a medium, which is well mixed and added. As the organic acid to be used, in addition to paratoluenesulfonic acid (melting point 96 ° C.), its anilide (melting point 103 ° C.), metatoluenesulfonic acid anilide (melting point 96 ° C.) and the like have substantially the same action and effect. By adding these organic acids to the medium, the curing reaction of the medium is promoted and the curing time is shortened. On the other hand, the adhesive layer 15 is composed only of the medium in the printing ink layer 13, and does not contain the organic acid at all. Therefore, the adhesive layer 15 is the printing ink layer 13
Also, there is a relatively long adhesive state between the transfer surface and the transfer surface, and as a result, even when the coating layer 14 is peeled off, the printing ink layer 13
Will not be peeled off from the surface of the transferred material.

The thermosetting resin used as the medium of the printing ink layer and the adhesive layer according to the present invention may be an epoxy-based resin, a melamine-based resin, or the like that cures at 60 ° C to 150 ° C, preferably 100 ° C or lower, or used alone or in combination. To be done. Of course, it does not matter that various organic or inorganic curing accelerators which are not related to the organic acid of the present invention are added to the medium. As the solvent, ethanol, butyl cellulose, etc. may be used alone or as a mixture, and those obtained by adding water to these may also be used.

Now, in order to transfer to a transfer target using the transfer mark according to the present invention, first, the transfer mark is immersed in water for 3 to 5 seconds to semi-dissolve the water-soluble glue layer 12 on the mount 11, The cover coat layer 14, the printing ink layer 13, and the adhesive layer 15 are peeled off from the mount 11 in a state where they are united, and the adhesive layer 15 is attached to a transfer target (not shown). Then, when it is heated to about 60 ° to 100 ° C. together with the transferred material in this state, even if the printing ink layer 13 is already hardened, the adhesive layer 15 is still formed between the printing ink layer 13 and the surface of the transferred material. Since the adhesive state continues between,
When the cover coat layer 14 is peeled off from the printing ink layer 13, the printing ink layer 13 is not peeled off from the transferred material. After removing the cover coat layer 14, the adhesive layer 15 continues to cure due to residual heat, and the curing is completed over time, and the adhesive state is eliminated. After the adhesive layer is cured, the printing ink layer is attached in a stable state to the transfer target unless a peeling force is forcibly applied.

[Effect of device]

The present invention is based on the above-mentioned constitution, and the printing ink layer using the thermosetting resin in the conventional baking type as a medium contains organic acid, and the adhesive provided between the printing ink layer and the water-soluble resin. Since the agent layer is formed only by the above-mentioned medium in which the organic acid is not mixed, there is a slight time lag in curing the adhesive layer and the printing ink layer with heating, resulting in printing. When the cover coat layer is peeled off after the ink layer has been cured, the adhesive layer adheres to the surface of the transferred material against the peeling force of the cover coat layer, so the printing ink layer may be released from the transferred material. This is a very useful idea because it has many advantages such as the loss of the printing ink layer transferred, the stability of the transferred printing ink layer, the improvement of the quality of the entire mark and the extension of the service life of the mark.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a printing transfer mark according to the present invention, and FIG. 2 is a sectional view showing a conventional printing transfer mark. 11,21 …… Mount paper, 12,22 …… Water-soluble glue layer, 13,23 …… Printing ink layer, 14,24 …… Cover coat layer, 15 …… Adhesive layer.

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Claims (2)

[Scope of utility model registration request] 1. A printing type transfer mark comprising an adhesive layer, a printing ink layer and a cover coat layer which are sequentially laminated on a mount having a water-soluble glue layer on the surface thereof, wherein the printing ink layer is a thermosetting resin medium. An organic acid is mixed therein, and the adhesive layer is formed of the same medium as the printing ink layer containing no organic acid, and the curing of the adhesive layer due to heating and the printing ink. A transfer mark characterized by having a time lag with respect to curing of the layer. 2. The transfer mark according to claim 1, wherein the organic acid is p-toluenesulfonic acid.