JPS6347883Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a tamper-proof label that is attached to the lip of the lid of a container such as a box or bottle to seal it. It is related.

Conventionally, sealing labels that are commonly used to be attached to the rim of the lid of containers such as boxes and bottles are composed of thin adhesive labels similar to so-called identification paper, and are simply attached to the rim of the container. be. In this case, the adhesive layer on the lower surface of the label could be easily peeled off by heating or gently peeling off, and could be reattached without leaving any traces.

As a result, there are many accidents in which the contents inside the container are removed or replaced. Recently, in order to eliminate the above-mentioned fraudulent acts, there are cut lines (tear lines) on the label itself.
A new type of adhesive label has also appeared, but from a structural perspective, the label base material is likely to break or tear due to the adhesiveness of the adhesive, and the label itself is If it is a strong adhesive, it is no match for the peeling techniques used by fraudsters, and it is possible to reapply it.

In view of the above-mentioned circumstances, the object of the present invention is to provide a label in which the label itself stretches due to the peeling action, and combined with the cut line, it is impossible to reapply without leaving any traces.

That is, in the present invention, the label body is made of an ultra-thin plastic film that causes residual strain only by the tensile force of peeling, and the label body itself has a plurality of vertical and horizontal score lines, and an adhesive is arranged on the back side. The peeling action causes the label itself to elongate (residual strain) and crack at the score line, making it impossible to reattach.

Hereinafter, the present invention will be explained based on the drawings of embodiments.

1 is a label base material made of an ultra-thin plastic film with a thickness of about 20 μm to 50 μm, such as polyethylene film, soft polyvinyl chloride film, or polybutadiene film, which has a low elastic modulus, high elongation, and a large amount of residual strain; A plurality of score lines 2 are cut in the vertical direction (longitudinal direction of tape-like release paper) and horizontal direction of the base material 1 so as not to reach the outer peripheral edge, and an adhesive 3 is applied to the entire back surface to prevent tampering. It is labeled as 4. This label 4
As a usage mode, the label 4 is put on the market as a roll-up tape in which the label 4 is pasted on the surface of the tape-like release paper 5 at regular intervals. In this case, the shape of the label 4 is a circular label 4 as shown in FIG. 1A.
The outer shape of a or the oval label 4 as shown in Figure 1 B.
It may be of any suitable shape, such as the H-shaped label 4c shown in FIG. 1C. In short, it is sufficient that the label base material 1 has a plurality of vertical and horizontal score lines 2 in at least four directions.

Next, when using this label 4, for example, a corner of the lid rim 6a of the container 6 filled with medicines etc. is pasted and sealed using a known suction-type label pasting device (not shown). (See Figure 4). In this case, feeding claws and holes 7 are formed on both sides of the tape-like release paper 5, and a V-shaped separation slit 8 is formed in the center.

Here, if the label 4 is pulled against the adhesive force in an attempt to peel it off for the purpose of fraud,
This label base material 1 is an ultra-thin plastic film and has a residual strain of at least 10 in the longitudinal direction a.
% or more, first label base material 1
Coupled with the fact that the label itself is stretched and deformed and does not return to its original shape, the cut line 2 cut into the label base material 1 cracks and tears. Even if the crevices at score line 2 are properly aligned, the stretched wrinkles will remain, making it possible to reattach without leaving any traces.

In this case, the cut lines 2 are arranged at least in the vertical and horizontal directions, and are arranged in a rectangular position as a whole, so that the vertical and horizontal cut lines 2 face both sides of the lid mouth edge 6a, which is the protruding corner. Therefore, even if it is peeled from either direction, the score line 2 will extend along that line, and it will not be possible to avoid the cracks in the score line 2. Furthermore, even if the film thickness is less than 20μ, residual strain will naturally occur, but if it is too thin, it may cause malfunctions in the labeling equipment.
Experiments have shown that a thickness of less than 20 μm causes problems, as it may wear off due to friction during transport of the container after being pasted.

As mentioned above, the tamper-proof label of the present invention uses an ultra-thin plastic film that generates residual strain due to label peeling tension as the label base material, and has a structure in which at least a plurality of vertical and horizontal score lines are cut into the film. Therefore, when peeling off the label once it has been applied, not only on the corners of the container but also on flat surfaces, the label base material will always stretch due to the force that resists the adhesive force, and that distortion will remain. Coupled with cracks at the score line that occur at the same time, it becomes impossible to reattach without leaving any traces. Furthermore, if the outer shape of this label is circular or oval, and the entire outer periphery is arcuate (no protruding corners), it will be difficult to remove the label, and conversely, if the label is shaped like an H with a constriction in the center, it will be difficult to remove the label. , the constriction part can be given a large elongation, and cracks can also occur from the constriction corner, making it impossible to reattach. Moreover, the film of this invention is made of ultra-thin material (20μ
~50μ), so no step is created on the surface of the container after pasting, and from this point of view, it has practical effects such as not causing curling around the periphery and giving a good appearance.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1A, B, and C are plan views of the embodiment, FIG. 2 is a plan view of the mode of use, and FIG. FIG. 4 is a perspective view of the device in use. 1... Label base material, 2... Cut line, 3... Adhesive.

Claims (1)

[Scope of utility model registration request] The label body is formed from an ultra-thin plastic film made of polyethylene film, soft polyvinyl chloride film, polybutadiene film, etc., which causes residual strain only due to label peeling tensile force, and the label body has appropriate dimensions in the vertical and horizontal directions. A tamper-proof label with multiple incision lines that do not reach the outer edge and an adhesive coated on the back of the label body.