JPH0333655Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to an improvement of an adhesive tape for packaging, and more specifically to a film-based adhesive tape for packaging used for sealing an object to be sealed such as a cardboard box.

(Prior Art) Various pressure-sensitive or moisture-sensitive adhesive tapes made of paper, film, cloth, or multiple layers of these have been used to seal objects such as cardboard boxes. .

Among them, film-based adhesive tapes are widely used because they have high strength and adhesiveness and are inexpensive.

(Problems to be Solved by the Invention) However, while film-based adhesive tapes can reliably seal objects to be sealed, they also have the disadvantage of requiring time and effort to open. For example, in supermarkets, most of the products such as foodstuffs and daily necessities arrive in cardboard packaging, which requires a great deal of time to open.

In other words, when opening a cardboard box with adhesive tape attached to the seams, the adhesive tape is generally torn along the seams.
For high-strength film-based adhesive tapes,
It is almost impossible for female employees who have weak physical strength to tear the tape by hand, and they cannot tear the film-based adhesive tape because they cannot use knives or other tools that may damage the product inside. It was extremely difficult to open the package.

Therefore, when opening a cardboard box sealed with film-based adhesive tape, the adhesive tape is torn off rather than torn, but film-based adhesive tape is very thin. Therefore, it is difficult to pull the end from the object to be sealed, or it may tear while being peeled off.
Opening a cardboard box sealed with a film-based adhesive tape has become very complicated because it cannot be removed all at once.

Therefore, in order to facilitate this opening operation, various adhesive tapes for packaging have been devised.

For example, there is a "packaging tape" disclosed in Japanese Utility Model Application Publication No. 57-3642. It is characterized by arranging holes and applying an adhesive to the back side of the tape base material. This "packaging tape" is designed so that it can be peeled off while cutting only the part sandwiched between the perforated through holes.
This makes it easier to peel off compared to when the entire piece is torn off.

However, even with this "packing tape",
The tape still has to be peeled off by pulling up the end portion from the item to be sealed, which not only does not make the opening process much easier, but also creates a problem in that a large amount of tape residue is generated.

Another example is the "One Touch Seal" disclosed in Japanese Utility Model Publication No. 48-104798, and this One Touch Seal uses cellotape (registered trademark, hereinafter the same) including the seal thread. It is characterized by "gluing it to the back side of the sticker and making cuts on the surface of the sticker to create right and left knobs." In the case of this "one-touch sticker," the cellophane tape is peeled off while cutting a part of the sticker attached to the back.
The part of the seal where the cellophane tape is attached to the back side is not attached to the object to be sealed, so it can be peeled off very easily.

However, this "one-touch seal" has the problem of being cumbersome and expensive to manufacture because it requires attaching cellophane tape to the back of the seal and forming a tab.
Also, similar to the above-mentioned "packaging tape", there was a problem in that a large amount of residue was produced when the sticker was peeled off. Furthermore, this "one-touch seal" is affixed to the object to be sealed in such a way that the part with cellophane tape affixed to the back side is located at the seam of the object to be sealed; Since the sealed parts are not attached to the object to be sealed, in other words, the seal is not attached to the important seam of the object to be sealed and its vicinity, there is a problem that the sealing strength is insufficient. Ta.

Furthermore, another example is the "sheet-like sealing material" disclosed in Japanese Utility Model Application Publication No. 49-128858. In a sheet material consisting of a sheet, two cuts are provided at a constant interval along the length direction of the sheet material approximately at the center of the release sheet, and two cuts are provided at regular intervals along the entire length of the sheet material, and the film base material is provided with two cuts on both edges in the width direction. It is characterized by having a large number of cuts, and one cut on each side of the two cut widths of the release sheet on both ends of the release sheet in the longitudinal direction. This "sheet-shaped sealing material" is peeled off while cutting the center part of the film base material with a release sheet left on the back side. Since it is not attached to the kimono, it can be easily peeled off like the ``one-touch sticker'' mentioned above.

However, in the case of this "sheet-shaped sealing material", two cuts must be made separately in the release sheet and the film base material, so like the above-mentioned "one-touch seal", manufacturing is troublesome and costly. In addition to being expensive, the release sheet had to be peeled off so that it remained on the back side of the central part of the film base material, making the application process troublesome. In addition, similar to the above-mentioned "packaging tape" and "one-touch seal", there was a problem in that a large amount of residue was produced when the film base material was peeled off. Furthermore, this “sheet-shaped sealing material”
is attached to the object to be sealed so that the center part with the release sheet left on the back side is located at the seam of the object to be sealed, but the center part is not attached to the object to be sealed, that is, the important point Since the film base material is not attached to the seams and the vicinity of the joints of the objects to be sealed, there was a problem that the strength of the seal was insufficient, similar to the above-mentioned "one-touch seal".

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to combine the contradictory requirements of the strength required for sealing and the ease of tearing for opening. To provide a film-based packaging adhesive tape with a simple structure that does not leave tape peeling residue when unsealed.

(Means for Solving the Problems) The means taken by the present invention to solve the above-mentioned problems are as follows. and an adhesive layer 20 is provided on the entire back surface thereof, and
A film-based packaging adhesive tape 10 characterized in that a plurality of opening cuts A intersecting the seam B are intermittently provided in a portion overlapping the seam B of the article to be sealed. It is something to do.

(Function of the invention) That is, when the film-based packaging adhesive tape according to the invention is applied to the seam B of a cardboard box, for example, as shown in FIG. 1, a plurality of intermittently formed cuts A...A will be located on seam B. In this state, the adhesive tape 10 is
The adhesive layer 20 is applied to the entire back surface of the cardboard box at seam B and its vicinity, and cuts A...A are provided intermittently so as to intersect seam B. Therefore, this adhesive tape 10 has the strength necessary for sealing a cardboard box. (Once a film-based adhesive tape has a cut, it easily tears in the direction of the cut, so if cut A...A is placed along seam B instead of intersecting seam B. (If external force is applied to seam B during transportation, etc., the adhesive tape will easily tear along seam B, resulting in insufficient strength.) When opening the cardboard box, by hitting any cut A part of the adhesive tape 10 sealing the cardboard box with your hand, the adhesive tape 10 at the cut A part can be broken. Furthermore, pry your finger into the seam B of the cardboard box through this tear,
By widening the seam B, the adhesive tape 10 can be easily torn along the seam B, and the cardboard box can be opened easily.

(Example) Next, an example of the film-based packaging adhesive tape according to the invention will be described.

In the drawing, reference numeral 10 is an adhesive tape, which has an adhesive layer 20 formed by applying a pressure-sensitive or moisture-sensitive adhesive to the entire back surface, and is not for ordinary packaging made of film. be. This adhesive tape 10 is intermittently provided with a plurality of opening cuts A...A that intersect with the seam B in the part overlapped with the seam B of the article to be sealed. A plurality of cuts A...A are cut approximately in the center along the direction. Once the film-based adhesive tape 10 has a cut, it tends to easily tear in the direction of the cut.
It is necessary to provide it so that it intersects the seam B when it is attached to the seam B. For example, Figure 3 A, B, C,
This is shown in d.

The cut A shown in FIG. 3A is an X-shaped cut. Cut A shown in Figure 3 B
is obtained by cutting off both ends of one of the diagonal lines forming the X-shape. The cut A shown in Figure 3 C is
The two diagonal lines forming the character shape are each formed into a broken line shape. The cut A shown in Figure 3 D is /
It is cut into a symbolic shape.

When the adhesive tape 10 with the cuts A, B, C, and D shown in FIG. The relationship shown in D is obtained. In other words, in this state, the seam B of the cardboard box
Adhesive tape 10 is also attached to the area and the vicinity thereof, and the cuts A...A are provided intermittently so that they intersect with the seam B, so that the strength necessary for sealing the cardboard box is maintained. have. Moreover,
Since the cut A of these adhesive tapes 10...10 has a portion that overlaps with the seam B, the adhesive tape 10 can be broken by hitting this overlapping portion with a hand. Then, the cardboard box can be easily opened by inserting a finger into the tear in the adhesive tape 10 to widen the seam B of the cardboard box and tearing the adhesive tape 10 along the seam B. Note that if the cuts A are broken at multiple locations as necessary, the cardboard box can be opened even more easily. In other words, you can use just your hands without using a knife.
A sealed cardboard box can be easily opened.

Moreover, the device shown in FIG. 3C has the following effects in addition to the above-mentioned effects. In other words, the adhesive tape 10 having the cut A shown in FIG. . Therefore, the cut A can be made larger without impairing the strength of the adhesive tape 10, so that the tear created by hitting the cut A part by hand during opening can be made larger, making opening even easier.

In addition, in the present invention, the opening cut A is only provided so as to intersect the seam B, and the adhesive strength at the center of the adhesive tape 10 is not reduced, so as shown in FIGS. 5 and 6. It can be used to directly connect and package the product 30 itself without putting the product in a cardboard box or the like, and it is possible to reduce packaging costs and transportation costs.

Note that it goes without saying that the shape of the cut A is not limited to the above embodiment.

(Effects of the invention) As described above, the film-based packaging adhesive tape according to this invention is applied to the seams of objects to be sealed such as cardboard boxes and the vicinity thereof, and the cuts intersect with the seams. Since it is provided in such a manner and intermittently, the strength necessary for sealing the joints of the objects to be sealed is not impaired. In addition, when opening this sealed part, if you tap the cut with your hand, the packaging adhesive tape will tear, and the packaging adhesive tape used for sealing will easily tear along the seam of the item to be sealed. I can do it. Therefore, even part-time female employees, many of whom are employed at supermarkets, etc., can quickly open cardboard packages using this adhesive packaging tape with just their hands, allowing them to easily open food and daily goods. Considering the fact that all products, including miscellaneous goods, are delivered in cardboard packaging, the effect of shortening unpacking time and saving labor is immeasurable. Furthermore, since a knife is not used to open the box, there is no chance of cutting or damaging the product contained in the cardboard box.

In addition, since the film-based adhesive tape for packaging according to the present invention is not made to be easily peeled off, but is made to be easily torn and torn, it has the effect that there is no residue of the tape to be peeled off when opening the package. Since the adhesive strength of the parts does not deteriorate, products can be directly connected and packaged without placing them in a cardboard box.

Furthermore, when sealing the seams of objects to be sealed such as cardboard boxes, the cuts act as sharp edges, making it easier to apply the adhesive tape evenly to the seams.
Since the position does not shift, there is also the effect that the sealing of this seam is reliable.

[Brief explanation of drawings]

The drawings are for explaining the adhesive tape for packaging according to this invention. Fig. 1 is a perspective view showing the state of use, Fig. 2 is an enlarged longitudinal sectional view of the main part, and Fig. 3 is a, b, c,
D is a partially omitted plan view of the whole showing a modified example of the cut, FIGS. FIG. 6 is a perspective view showing another state of use. Explanation of symbols, 10...adhesive tape, 20...adhesive layer, A...cut, B...joint.

Claims (1)

[Claims for Utility Model Registration] 1. A film-based packaging adhesive tape that is attached to the seams of objects to be sealed, which has an adhesive layer on the entire back surface thereof, and has an adhesive layer attached to the seams of the objects to be sealed. A film-based adhesive tape for packaging, characterized in that a plurality of opening cuts are intermittently provided in the overlapped portion to intersect with the seams. 2 Utility model registration claim 1 characterized in that the opening cut is cut in an X-shape.
Adhesive tape for packaging as described in section. 3. The packaging adhesive tape according to claim 1, wherein the opening cut is in the shape of a broken line.