JPH0533398B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a sealing tape.

Generally, adhesive tape is often used for sealing paper bags and boxes.

In this case, if the surface of the paper bag or box to be sealed is made of a hard and smooth material, even if you carefully peel off the tape used for sealing, open the paper bag or box, and then seal it again with the same tape, Traces of opening cannot be easily detected.

Currently, products are manufactured, packaged, and go through numerous distribution processes before being displayed in stores and reaching general consumers.

For consumers, being able to confirm for themselves that the product packaging has not been opened from the time it was packaged at the factory until the time they received it gives them a great sense of security. This is also a very serious issue for product manufacturers from the standpoint of quality assurance and safety control.

Especially when the product is food, it is very important to confirm that there is no poisonous substance mixed in during the distribution process.

An object of the present invention is to provide a sealing tape that allows even general consumers to easily find traces of the packaging of a product when it is opened.

The present invention provides adhesive prevention means on one side of a transparent or translucent tape-like sheet, an internal adhesive layer on the back side, pattern ink in an arbitrary shape on top of the adhesive layer, and furthermore, a method for sandwiching the pattern ink. A tape having a multilayer structure with an external adhesive layer provided thereon, the adhesive layer being at least one of the internal adhesive layer and the external adhesive layer on the side facing the pattern ink. Consists of sealing tape partially coated with ink repellent.

The sealing tape of the present invention will be explained in detail with reference to Examples.

The tape-like sheet 1 shown in FIG. 1 is a transparent plastic sheet, and its surface is coated with a silicone agent to prevent adhesion.

In addition to applying a silicone agent, means for preventing adhesion of the sealing tape of the present invention include, for example, applying a fluorine agent or other lubricant, laminating with a film made of a material with a smooth surface, and tape-like sheet 1.
This can be achieved by selecting an appropriate combination of the material of the outer adhesive layer 4 and the material of the outer adhesive layer 4.

As the adhesion prevention means used in the sealing tape of the present invention, those used in ordinary adhesive tapes can be adopted, and the external adhesive layer 4 can prevent the pattern ink 3 etc. from adhering to the surface. You can use any method you want.

Since the sealing tape of the present invention has anti-adhesion means applied to the surface of the tape-like sheet 1 in this way, it can be stored, transported, or handled in a variety of ways in the form of a ring wound like a normal adhesive tape. can do.

In the sealing tape of this example, the tape-like sheet 1
An internal adhesive layer 2 is first applied to the back side of the holder. This internal adhesive layer 2 is provided with spot-like ink-repellent portions as shown in FIG.

As for the ink-repellent portion of the sealing tape of the present invention, the spotted portion of the pattern shown in FIG. 3 may be used as the adhesive layer portion, and the other portions may be used as the ink-repellent portion, Various patterns can be selected including horizontal stripes or vertical stripes as shown in FIG.

In the sealing tape of the present invention, it is preferable to form the ink-repellent part 5 by actively applying an ink-repellent to this part, instead of simply providing the ink-repellent part 5 by a missing part of the adhesive layer. Can be adopted.

Ink repellents include those that simply block the adhesive force of the adhesive layer, and those that are water- or oil-repellent, such as silicone-containing resins, fluorine-based release agents, etc., that come into contact with the material of the pattern ink 3 and each other. It can be appropriately selected and used depending on the material of the adhesive layer of the other party.

In the sealing tape of the present invention, the ink-repellent portion 5 reduces the adhesive force between the inner adhesive layer 2 and the pattern ink 3 to ensure that the pattern ink 3 is applied to the outer adhesive layer 4.
This has the effect of making it more attractive to people. Any means that can achieve such an effect can be employed as the ink repellent section 5.

When using an ink repellent, the adhesive can be applied to the entire surface, and then the ink repellent can be applied intermittently in any pattern described above.

In this embodiment, the internal adhesive layer 2 is coated and then the checkered stripes shown in FIG. 2 are printed. As a result, the pattern ink 3 is provided in a checkered pattern on the internal adhesive layer 2, which is clearly visible from the surface of the transparent tape-like sheet 1. In this way, the tape-like sheet 1 is made transparent or translucent so that the ink pattern can be seen from the surface. It is also desirable that the internal adhesive layer 2 has a transparency that does not hinder the identification of the pattern.

In this case, the thinner the checkered print lines, the easier it is to find evidence of tampering.

The shape of the pattern ink 3 in the sealing tape of the present invention is not limited to this checkered line, but any pattern or emblem of any shape can be adopted. When the printed pattern is vertical stripes, it is also a desirable combination to make the pattern of the ink-repellent portion 5 of the adhesive layer horizontal stripes.

In this example, an external adhesive layer 4 is applied over the entire surface of the printing ink.

In the sealing tape of the present invention, an ink-repellent portion as described above may be provided on the outer adhesive layer. In this case, the effect of the sealing tape of the present invention can be obtained without providing an ink-repellent portion on the external adhesive layer. Of course, if both adhesive layers are provided with ink-repellent parts, it will be easier to find traces of tampering.
Effective.

If the sealing tape of this embodiment is applied to the sealing part of a box or bag, the tape will be attached to the outer adhesive layer 4.
to adhere to the sealed part and seal it.

When this tape is peeled off, the portion of the external adhesive layer 4 facing the ink-repellent portion 5 remains in the sealing portion along with the portion corresponding to the pattern ink. Then, the portion of the external adhesive layer that does not face the ink-repellent portion 5 is peeled off along with the pattern ink portion thereon, attached to the tape. As a result, the pattern ink separates into both parts and is destroyed. Once the pattern ink is destroyed, it is completely impossible to restore it if the pattern is complex to some extent.

In this way, when the sealing tape of the present invention is torn, traces thereof can be easily found.

When the sealing tape of this embodiment is peeled off, whether or not the part of the external adhesive layer 4 that does not face the ink-repellent part 5 is attached to the peeled tape depends on the sealing part and the external adhesive. There is a conflict between the affinity between the adhesive and the affinity between the tape and the external adhesive, and it may not necessarily all come off together with the tape. However, it is not necessary that this part of the outer adhesive layer is entirely accompanied by the tape being peeled off; it is sufficient to achieve the purpose if it is partially peeled off together with the tape. Further, if the affinity between the internal adhesive layer and the pattern ink is strong, the pattern ink and the external adhesive may peel off, and the object of the present invention can also be achieved in this case.

In the sealing tape of the present invention, if the ink-repellent portion 5 is provided not only in the inner adhesive layer 2 but also in the outer adhesive layer 4, it is possible to ensure that the pattern ink is reliably separated into the tape side and the sealing portion side. .

In fact, even if both of these adhesive layers are not provided with ink-repellent portions 5, under most conditions the pattern ink will reliably decompose upon peeling off.

When the adhesion between the sealing part and the external adhesive layer is particularly strong, it is appropriate to provide the ink-repellent part 5 on both adhesive layers.

When using the sealing tape of the present invention, destruction of the seal can be reliably detected by strictly managing the sealing tape. At that time, if the sealing tape of the present invention, which has a unique patterned ink shape, is used, it is possible for others to manufacture counterfeits.
This also prevents them from being sold with the same seal.

The sealing tape of the present invention can be used not only for sealing the packaging of the above-mentioned products, but also for a very wide range of applications, such as sealing envelopes for confidential documents and bags for depositing valuables, and can be used in many industrial fields, so it will contribute greatly. However, it is a vast and extremely useful invention.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing the multilayer structure of the sealing tape of the present invention, FIG. 2 is a front view showing the appearance as seen from the surface, and FIGS. 3, 4, and 5 are FIG. 3 is a plan view showing the shape of an ink-repellent portion. The symbols in the figure are 1: tape-like sheet, 2: internal adhesive layer, 3: pattern ink, 4: external adhesive layer, 5: ink-repellent portion.

Claims (1)

[Claims] 1 Applying an adhesion prevention means to one side of a transparent or translucent tape-like sheet, providing an internal adhesive layer on the back side, and providing a pattern ink of an arbitrary shape on top of that,
Furthermore, the tape has a multilayer structure in which an external adhesive layer is provided on the pattern ink so as to sandwich the pattern ink thereon, the adhesive layer being at least one of the internal adhesive layer and the external adhesive layer. A sealing tape characterized by having an ink repellent coated part partially provided on the side facing pattern ink.