JPH0438377Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a seal that prevents reuse, and particularly to a seal that prevents reuse for use in the sealing portion of packaging containers such as boxes and bags.

(Prior art) Conventionally, the seals used for packaging boxes, bags, outer wraps, films, and other packaging for confectionery and other food products have been pasted and used, and then peeled off and reapplied. In order to prevent such damage, fragile plastic films and paper, which have extremely low mechanical strength such as tearing and tensile strength, are used as base materials. Therefore, when the article or equipment to which it is attached is subjected to vibration, shock, friction, etc. due to movement or the like, the base material easily becomes damaged and becomes useless as a seal.

In addition, recently, there is an application in which a tough plastic film is used as a base material, such as Japanese Utility Model Application No. 59-1077.

(Problem that the invention attempts to solve) The label described in Utility Model Application Publication No. 1077, 1983, is
This type of label is characterized by forming a release layer partially on one side of a tough film, forming a vapor-deposited film over the entire surface of the release layer, and further forming an adhesive coating layer on the vapor-deposit film. Since the peeling layer is a pattern, there is a risk that the vapor deposited layer will be destroyed because it has a fixed shape, so there is a risk that it will be repaired.Also, since a vapor deposited film is formed, the cost will be high.

(Means for solving the problem) A transparent release agent layer provided entirely on one side of a transparent or translucent plastic film base material,
A reuse-preventable seal comprising a breakable warning ink layer appropriately provided on the release agent layer and an adhesive layer partially provided on the warning breakable ink layer.

(Function) According to the seal of the present invention, since a release agent layer is provided on one side of the plastic film base material, when an attempt is made to peel off the seal, it can be easily peeled off from this release agent layer, and it can be re-adhered. I can't.
In addition, since the adhesive layer is partially provided on the easily destructible ink layer for warning, when the sticker is removed, the easily destructible ink layer for warning only in the part that covers the adhesive layer will be removed by the adhesive. It remains on the layer side. As a result, the easily destructible warning ink layer is destroyed in an amorphous manner, revealing evidence of opening.

(Example) Hereinafter, the present invention will be explained in detail with reference to an example shown in the drawings.

Figure 1 shows the reuse prevention seal A of the first embodiment.
A vertical cross-sectional view is shown.

1 indicates a sheet-like tough transparent or translucent plastic film base material. As the base material 1, it is preferable to use, for example, polyester, vinyl chloride, polypropylene, polyethylene, or the like. A printing 5 for display is applied on one side of the base material 1.

Next, a transparent release agent layer 2 is placed on the other side of this base material 1.
is formed. As the release agent 2, an acrylic release varnish or the like is used, and the entire surface is coated by a gravure printing method or the like.

Further, on the entire surface of the release agent layer 2, a breakable ink layer 3 for warning purposes is formed.

Next, on this easily destructible ink layer 3 for alarm, a second
As shown in the figure, an adhesive layer 4 is formed in a pattern, and a pressure-sensitive adhesive or a heat-sensitive adhesive is used as the adhesive layer 4.

To explain how the first embodiment is used, for example, when the seal is pasted on the seal of a box, a bag, or an exterior wrap film, when the seal is opened, it easily peels off from the release agent layer. At this time, only the portion of the easily destructible warning ink layer that covers the adhesive layer remains on the adhesive layer side, and the other portions of the easily destructible warning ink layer are separated and peeled off together with the release agent layer. be done. Therefore, the easily destructible ink layer for warning is destroyed in an irregular manner, and traces of opening become apparent. In addition, since the release agent layer does not have re-adhesive properties, it is impossible to reproduce the adhesive state as it is, but even if you prepare a separate adhesive and try to seal it,
The easily destructible ink layer for alarms has already been destroyed in an irregular manner, and it is completely impossible to neatly connect all the end faces of this divided ink layer and restore it as if it had never been divided. be.

Next, another embodiment will be described using FIG.

In the second embodiment shown in FIG. 3, a printing 5 for display purposes is applied to one side of the plastic film substrate 1 as A'. On the other side of the base material 1, a release agent layer 2 is formed entirely, and on this release agent layer 2 there is a partial warning consisting of letters such as "Do not use once opened" or a picture. A breakable ink layer 3' for warning is formed, and a patterned adhesive layer 4' is formed so as to cover this partially breakable ink layer 3' for warning.

Here, the usage status will be explained. Similarly to the first embodiment, when trying to remove the sticker, it easily peels off from the release agent layer 2, but at this time, the easily destructible warning ink layer 3 only covers the adhesive layer 4. ' remains on the adhesive layer 4 side. Therefore,
The easily destructible ink layer 3' for warning is destroyed in an amorphous manner,
There are obvious signs of opening. In addition, compared to the first embodiment, the easily destructible ink layer 3' for alarm is
Because it is a partial display consisting of characters, pictures, etc.
It is possible to print a word or phrase that calls for attention, and to draw attention to the person who opened the package more directly by using the traces of the word or phrase (easily destructible ink layer 3' for warning). . In addition, since the release agent layer does not have re-adhesive properties, it is impossible to reproduce the adhesive state as it is, but even if you prepare a separate adhesive and try to seal it, the easily destructible ink layer 3 ' has been destroyed in an amorphous manner, and it is completely impossible to neatly connect all the end faces of this divided easily destructible alarm ink layer 3' and restore it as if it had never been divided. Become.

Next, to specifically explain the manufacturing process of the seal of the present invention, a release varnish (manufactured by Toyo Ink Co., Ltd., product name Coat the entire surface with 2-3 μm thick acrylic material HP-385. On top of that, a solid ink (manufactured by Toyo Ink Co., Ltd., trade name: Lamiace) is printed on the entire surface or in part to a thickness of 1 to 2 μm. If the entire surface is covered with ink, use a pressure-sensitive adhesive [manufactured by Dainippon Ink Co., Ltd., trade name: DEITSUKU PLAST RSX-].
381, or manufactured by Toyo Ink Co., Ltd., product name
BPS-3235] or heat-sensitive adhesive [manufactured by Dainippon Ink Co., Ltd., product name: Hotmelt, product name: LamiAce, or Toyo Ink Co., Ltd., product name:
Apply PS-427HS varnish (solvent-based) in a pattern. When using a pressure sensitive adhesive, it is coated with an arbitrary pattern using a coater laminator, laminated with release paper, and wound up. In addition, when using a heat-sensitive adhesive, it is coated with a pattern plate in-line in the printing machine, and
After drying and cooling, it is rolled up.

A sticker is manufactured by performing desired printing 5 on the rolled up base paper using a sticker printing processing device, and then punching it out and winding it up.

(Effects) The present invention is a seal with the above configuration,
Since plastic film is used as the base material, it has the effect of having high mechanical strength in terms of tear strength and tensile strength.

Further, since a release agent layer is provided, it has the effect of being easy to peel and having no re-adhesion.

Furthermore, since the adhesive layer for the seal is provided so as to partially cover the easily destructible ink layer for the warning, once it is peeled off, the easily destructible ink layer for the warning is partially destroyed, and this Since it is virtually impossible to reconnect all the end faces of the separated easily destructible ink layer for alarms, this method has the effect of revealing traces of tampering and preventing unauthorized tampering. be.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a reuse prevention seal according to an embodiment of the present invention, Fig. 2 is a back view of the seal, and Fig. 3 is a longitudinal sectional view of a reuse prevention seal of another embodiment. It is. 1... Base material, 2... Peeling layer, 3, 3'... Ink layer, 4... Adhesive layer.

Claims (1)

[Scope of utility model registration request] a transparent release agent layer provided entirely on one side of a transparent or translucent plastic film substrate;
A reuse-preventable seal comprising a breakable warning ink layer appropriately provided on the release agent layer and an adhesive layer partially provided on the warning breakable ink layer.