JPH0880590A - Doubly sticking preventive label - Google Patents

Abstract

PURPOSE: To provide a label wherein a symbol or a character which varies independently can be recorded, it can be also prevented from being stuck again, and its fitting is easy. CONSTITUTION: A pattern 2 is formed by scattering a coated part of a transparent release agent and its non-coated part on a rear surface of a transparent synthetic resin film 1. Besides, a transparent pressure sensitive adhesive layer 3 is formed on all the rear surface by covering the pattern, and a printed layer 4 by ink jetting is formed on the transparent pressure sensitive adhesive layer. Thereby, a varying symbol such as a manufacturing number or the like is recorded on each sheet of a label, which can be easily stuck to a sticking surface, and the symbol can be read from the surface of the label. Besides, when the label is once peeled off, the printed layer is broken. Thereby, it becomes unable to be used again, and the label is effective for certification.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a re-adhesion preventing label which prevents a label attached to an article from being peeled off and reused.

[0002]

2. Description of the Related Art Conventionally, for example, a label which seals an unsealed portion of an article is provided with a function of detecting unsealing, and it is known that the label itself is once peeled off. . One example thereof is as shown in FIGS. 1 and 2, and the back surface b of the label base material a made of a transparent film.
A transparent release layer c in the form of letters (in the example shown, the letter "open"), and a colored layer such as a metal vapor deposition layer or a solid printing layer on the back surface b of the label substrate a containing the release layer c. d is provided, and an adhesive layer e is provided on the colored layer d to form a label f having an opening function. FIG. 1 is a view seen from the upper surface of the label f, and since the character "open" is usually formed by a transparent peeling layer c, only a uniform coloring layer d below the peeling layer c is formed. Although not visible, it is shown for convenience. Before use, this label f has a release paper g as shown in FIG.
The adhesive layer e is protected by, and the release paper g is peeled off when the adhesive layer e is used, and the pressure-sensitive adhesive layer e is attached to the open part of the adherend h. When the adhered label f is peeled off, the colored layer d and the adhesive layer e below the transparent release layer c remain on the adherend h as shown in FIG. Appears. Although not shown, even when the peeling layer c remains on the adherend h together with the colored layer d and the pressure-sensitive adhesive layer e, the word "unsealed" appears similarly.

[0003]

The above-mentioned label f is
When the label f is once peeled off, the word "opened" appears, so that the label f cannot be reattached to another place for use.
However, since the structure of the label f includes the peeling layer c, the coloring layer d, and the pressure-sensitive adhesive layer e as indispensable components, it is difficult to describe a symbol such as a manufacturing number that changes for each label. is there. For example, parts such as automobile engines, transmissions, doors, etc. are individually attached with plates having serial numbers, but there is a demand to prevent the plates from being peeled off and attached to other parts. In order to satisfy the above requirement, it was attempted to print the production number on the surface of the label f of the opening detection type and to further superimpose a synthetic resin transparent film on it, but it was reattached when only the release layer c was destroyed. It has been found that the function of preventing re-adhesion is weak, and that the production number is destroyed at the same time as peeling of the label, which is preferable for preventing re-adhesion. A type in which the manufacturing number is also destroyed when the label is peeled off is known in Japanese Patent Publication No. 49-35596, but the structure is remarkably complicated and the manufacturing is not easy and the cost is high.

It is an object of the present invention to provide a simple label having a structure in which individually changing symbols and characters can be described, re-adhesion can be prevented, and attachment is easy.

[0005]

In the present invention, a transparent synthetic resin film is provided with a transparent release agent coating portion and a non-coating portion dispersed on the back surface of the transparent synthetic resin film so as to form a pattern and cover the pattern. The above object was achieved by forming a transparent adhesive layer on the entire back surface and forming an inkjet print layer on the transparent adhesive layer. The pattern of the transparent release agent is preferably formed in an area such that the adhesive force between the transparent synthetic resin film and the transparent pressure-sensitive adhesive layer is not impaired, and the pattern of the transparent release agent is the inkjet ink. It is preferable to traverse the printing layer of.

[0006]

According to the label of the present invention, a transparent release agent pattern is formed on the back surface of a transparent synthetic resin film, and a transparent pressure-sensitive adhesive layer covering the entire back surface is formed, and an inkjet is formed on the transparent pressure-sensitive adhesive layer. The printing layer is formed, and if necessary, the transparent pressure-sensitive adhesive layer is covered with a release paper to form a label, and characters or symbols such as a production number are clearly printed on the pressure-sensitive adhesive layer by the inkjet. When the label is attached to an appropriate place such as a part, it can be read from the surface of the synthetic resin film through the adhesive layer and the pattern. And
When the label is peeled off, the pattern portion is separated from the synthetic resin film and remains on the sticking surface together with the pressure-sensitive adhesive layer, and the other pressure-sensitive adhesive layer is broken and the sticking is performed together with the synthetic resin film. Peeling from the surface, at that time, the ink-jet printing layer provided on the pressure-sensitive adhesive layer serves as the pressure-sensitive adhesive layer, in other words, the print layer also breaks when the pressure-sensitive adhesive layer breaks. The printed layer of the label peeled off from the label is destroyed and cannot be reused.

[0007]

Embodiments of the present invention will be described with reference to the drawings.
FIG. 4 is a cross-sectional view drawn relatively exaggeratedly. In FIG. 4, reference numeral 1 indicates a transparent synthetic resin film such as polyethylene terephthalate, polyethylene, polystyrene, polypropylene, or polyvinyl chloride. In order to form a striped pattern as shown in FIG. 5, the transparent release agent pattern 2 is formed by, for example, printing, by interspersing the transparent release agent coated portion and the non-coated portion. Waxes, silicone resins, alkyl resins, and cellulose resins are used as the transparent release agent. Further, a transparent pressure-sensitive adhesive layer 3 of, for example, an acrylic resin is applied and formed on the entire back surface of the film 1 so as to cover the pattern 2 by a roll coater or the like.
Then, the printing layer 4 by inkjet is directly formed on the transparent pressure-sensitive adhesive layer 3, and if necessary, the release paper 5 covering the printing layer 4 and the pressure-sensitive adhesive layer 3 is polymerized.

According to the present invention, the label has the above-mentioned structure,
Printing layer 4 with serial number that changes sequentially by inkjet
It is possible to directly form on the pressure-sensitive adhesive layer 3 and to prepare a different printing layer 4 for each label. In the label thus produced, since the adhesive layer 3 and the release agent pattern 2 existing above the printing layer 4 have transparency, the printing layer 4 can be clearly seen from above the synthetic resin film 1 as shown in FIG. Can be read. The pattern 2 of the transparent release agent was applied and formed at an interval such that it crossed and crossed the printing layer 4 and in such an area that the adhesive force between the synthetic resin film 1 and the pressure-sensitive adhesive layer 3 was not impaired.

When the label of the present invention that has been applied is peeled off, the pattern 2 is present between the synthetic resin film 1 and the pressure-sensitive adhesive layer 3, so that the pressure-sensitive adhesive layer 3 is formed according to the pattern 2. 7 is broken as shown in FIG. 7, the pressure-sensitive adhesive layer 3a on the pattern 2 remains adhered to the attachment surface 6, and the pressure-sensitive adhesive layer 3b directly adhered to the synthetic resin film 1 is the synthetic resin film. 1, the printed layer 4 is broken at the same time as the adhesive layer 3 is broken, and the peeled label cannot be reused because the printed layer 4 falls off as shown in FIG.

A specific embodiment of the present invention is as follows.

On the back surface of a transparent polyethylene terephthalate transparent synthetic resin film 1 having a width of 1.5 cm and a length of 5.0 cm, a transparent release agent made of a silicone resin having a line width of 1 mm is used.
To form a pattern 2 by printing in a linear striped pattern with a space of 5 mm. Then, a transparent adhesive of acrylic resin is applied to a thickness of 0.03 mm by a roll coater to cover the pattern 2 and the entire back surface. Then, the transparent adhesive layer 3 is formed by drying at 100 ° C. for 60 seconds, and a number and a figure of 10 × 10 mm are printed in red by an inkjet printer on the transparent adhesive layer 3 to form a printing layer 4, which is used as a label. did.

This label was attached to the inner gray surface of the automobile bumper. The printed layer 4 was clearly read from the surface of the label, and the release agent pattern 2 was not visible. The label was slowly peeled off, but the pressure-sensitive adhesive layer 3 broke at the portion of the pattern 2, a part of the printing layer 4 remained on the bumper, and the rest was peeled off together with the synthetic resin film 1. The print layer 4 on the peeled label side was partially destroyed and it was difficult to reuse.

[0013]

As described above, according to the present invention, a pattern is formed on the back surface of a transparent synthetic resin film by interspersing a portion coated with a transparent release agent and a portion not coated with the transparent release agent and covering the pattern. Since the transparent adhesive layer was formed on the entire back surface and the ink jet printing layer was directly formed on the transparent adhesive layer, it is easy to describe a symbol such as a serial number which changes for each label. There is an effect that it can be stuck on the sticking surface, the symbol can be read from the label surface, and once the label is peeled off, the printing layer is destroyed and reuse is impossible, so it is effective for certification etc. .

[Brief description of drawings]

FIG. 1 is a plan view of a conventional example.

FIG. 2 is a sectional view of a conventional example.

FIG. 3 is a sectional view of a conventional example in a peeled state.

FIG. 4 is a sectional view of an embodiment of the present invention.

FIG. 5 is a plan view showing a state in which a pattern is formed on a transparent synthetic resin film.

6 is a plan view of FIG.

7 is a sectional view of the peeled state of FIG.

FIG. 8 is a plan view of the peeled state

[Explanation of symbols]

 1 Transparent Synthetic Resin Film 2 Pattern 3 Transparent Adhesive Layer 4 Printing Layer 5 Release Paper

Claims (3)

[Claims] 1. A transparent adhesive film is formed on the back surface of a transparent synthetic resin film by interspersing a transparent release agent-coated portion and a non-coated portion with the transparent release agent film. A re-adhesion preventive label comprising a transparent adhesive layer and an inkjet print layer formed on the transparent adhesive layer. 2. The pattern of the transparent release agent is formed in an area that does not impair the adhesive force between the transparent synthetic resin film and the transparent pressure-sensitive adhesive layer. Re-sticking prevention label. 3. The re-adhesion preventive label according to claim 1, wherein the pattern of the transparent release agent traverses the print layer of the inkjet.