JPH11292141A - Unsealing label of packaging film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably prevent an object packaged in a packaging film from deforming at the time of unsealing by providing a weakly adhesive portion whose adhesion is weaker than that of an adhesive portion between the adhesive portion and a non-adhesive portion. SOLUTION: At the time of unsealing a packaging film 8, a non-adhesive portion 3 is used as a tab wherein the non-adhesive portion 3 is pinched to pull a label for starting unsealing operation. Thus since a weakly adhesive portion 4 is weaker in adhesion than an adhesive portion 2, the label located backward in an unsealing direction A from a cut starting part 9a can be easily peeled off from the packaging film 8 with slight force. In addition, since a coating area of an application layer is formed to be gradually smaller from the non-adhesive portion 3 toward the adhesive portion 2, an exposed area of adhesive (an adhesive area to the packaging film 8) gradually increases along the unsealing direction A, so that peeling force at the time of peeling gradually increases, allowing extremely smooth peeling operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening label of a packaging film for attaching a packaging object such as a cup ramen or an onigiri and for opening the packaging film. The present invention relates to improving the adhesive strength of the back surface of a material.

[0002]

2. Description of the Related Art Conventionally, an opening label of a packaging film of this kind is provided with an adhesive portion formed by applying an adhesive to one end of the back surface of a label substrate, and the adhesive is applied to the other end. A non-adhesive portion which is not provided is known.

[0003] The label is attached to a packaging film for packaging containers such as cup noodles and used for opening the packaging film. Specifically, at a predetermined position of the packaging film, a notch for opening is formed in a U-shape along the opening direction, and the adhesive portion is superimposed on the notch and the rear side in the opening direction. Is adhered so that the non-adhesive portion is located at the position.

[0004] At the time of opening, the non-adhesive portion is picked and the label is pulled in the opening direction, so that the adhesive portion attached to the packaging film on the rear side of the cut portion is peeled off from the packaging film. When the label is further pulled in the opening direction, the packaging film is torn by the adhesive force of the adhesive portion starting from the end of the cut portion (separation start portion), and the packaging film is opened.

[0005]

However, the adhesive portion is
Because it has a strong adhesive force so that the packaging film can be separated from the cut start part of the cut part at the time of opening, to peel the adhesive part on the back side in the opening direction from the cut start part from the packaging film. Requires that the label be strongly pulled with the other hand while holding the container firmly with one hand. However, there is a problem that the container is deformed because the container is strongly held.

[0006] When the label is attached to a packaging film for packing the onigiri, the packaged onigiri is easily deformed, so that the deformation at the time of opening is even more remarkable.

As described above, in the conventional label for opening a packaging film, since the adhesive portion has a strong and uniform adhesive force from the rear side to the front side in the opening direction, the adhesive portion has a higher strength than the separation start portion. This makes it difficult for the rear adhesive portion to be peeled off from the packaging film, and as a result, there has been a problem in that the container and the rice ball are deformed unless care is taken at opening.

In view of the above, the present invention has been made in view of the above-mentioned conventional problems. By improving the releasability of a label from a packaging film, it is possible to prevent deformation of an object to be packaged which is packaged in the packaging film at the time of opening. An object of the present invention is to provide an opening label for a packaging film that can be reliably prevented.

[0009]

Means for Solving the Problems The present invention has been made to solve the above problems, and the first means is to provide an adhesive portion 2 and a non-adhesive portion 3 on the back surface of a label substrate 1. In the opened label of the packaging film, a weak adhesive portion 4 having a lower adhesive strength than the adhesive portion 2 is provided between the adhesive portion 2 and the non-adhesive portion 3.

[0010] The opening label of the packaging film is attached to the packaging film, the adhesive portion 2 is superimposed on the separation start portion of the cut portion formed in the packaging film, and the non-adhesive portion is placed on the rear side in the opening direction. When the adhesive portion 3 is located, the weak adhesive portion 4
It will be located behind the separation start part. Therefore,
When the opening operation is started by picking the non-adhesive portion 3 and pulling the label, the weakly-adhesive portion 4 can first be peeled from the packaging film with a smaller force than the adhesive portion 2, and after the peeling, the packaging film can be peeled off from the separation start portion. The separation is started and the packaging film is opened.

A second means for solving the above-mentioned problem is that an opening label of a packaging film in which an adhesive portion 2 and a non-adhesive portion 3 are provided on the back surface of a label substrate 1 as described in claim 3. , The adhesive portion 2 has a protruding portion 2 a protruding toward the non-adhesive portion 3.

[0012] In the opening label of the packaging film having such a configuration, if the adhesive portion 2 is overlapped on the separation start portion of the cut portion and the non-adhesive portion 3 is located on the rear side in the opening direction, the protrusion will occur. The portion 2a is located on the rear side in the opening direction from the separation start portion. Therefore, in the opening operation, the peeling is started from the protruding portion 2a, so that the peeling from the packaging film can be performed with a small force. Is opened.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of an opening label for a packaging film of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, the label according to the present embodiment has an adhesive portion 2 on one end in a longitudinal direction and a non-adhesive portion 3 (hatched portion) on one end in the longitudinal direction on the back surface of a rectangular label base material 1.
Is provided between the adhesive portion 2 and the non-adhesive portion 3.
(Dot portion).

More specifically, as shown in FIG. 2, an adhesive 5 is applied to the entire back surface of the label substrate 1, and the non-adhesive portion 3 and the weak adhesive portion 4 have a non-adhesive The thin coating layer 6 of the adhesive is printed and the adhesive 5 is covered,
The non-adhesive part 3 is formed by covering the entire adhesive 5 with the coating layer 6, the weakly adhesive part 4 is formed by partially covering the adhesive 5 with the coating layer 6, and the adhesive part 2 is formed of an adhesive 5 is exposed.

The weakly adhesive portion 4 is formed so that the coating area of the coating layer 6 gradually decreases from the non-adhesive portion 3 side to the adhesive portion 2 side along the longitudinal direction. Specifically, as shown in FIG. 3, the coating layer 6 is formed in a circular shape in plan view, and the diameter of the coating layer 6 is gradually reduced along the longitudinal direction (the direction of arrow A in the figure). As a result, the covering area is reduced. That is, the configuration is such that the exposed area of the adhesive 5 gradually increases.

The label substrate 1 can be made of paper, polyester film, synthetic paper, or the like, and the adhesive portion 2 has an adhesive force that can be peeled off from the packaging film and can be opened.
As the non-adhesive, a non-adhesive paint, printing ink, or the like can be used.

Next, an example of a method of using the opening label of the packaging film configured as described above will be described. The container for cup ramen 7 shown in FIG. 4 is packaged with a packaging film 8 made of a heat-shrinkable polypropylene film,
At a predetermined position (the body of the container 7) of the packaging film 8, a U-shaped cut portion 9 for opening is formed.
The opening end 9a at the time of opening the front end in the opening direction A is
Becomes

The label is attached at a position covering the cut 9, the label is adhered so that the longitudinal direction of the label is aligned with the opening direction A of the cut 9, and the non-adhesive portion 3 is opened in the opening direction. A
The adhesive portion 2 is located on the front side and covers the separation start portion 9a.

When opening the packaging film 8,
When the non-adhesive portion 3 is used as a pick portion, the non-adhesive portion 3 is picked, the label is pulled, and the opening operation is started. The label on the rear side in the direction A can be easily peeled off from the packaging film 8 with a small force, and the coating area of the coating layer 6 gradually increases from the non-adhesive portion 3 side to the adhesive portion 2 side along the longitudinal direction. Since it is formed to be small, the exposed area of the pressure-sensitive adhesive 5 along the opening direction A (the packaging film 8
(The area to be adhered to) gradually increases, and the peeling force at the time of peeling gradually increases, so that the peeling operation can be performed extremely smoothly.

When the portion of the packaging film 8 surrounded by the cutout 9 is adhered to the weak adhesive portion 4 and the adhesive portion 2 and the label is peeled off to the separation starting portion 9a, the packaging film 8 is cut. It is cut off from the separation start portion 9a, separated from the container 7 side together with the label, and opened.

As described above, since the label can be smoothly peeled at the time of opening, there is no possibility that the container 7 held by the other hand is deformed at the time of peeling, and the state of the container 7 before opening can be reliably maintained. .

In the above embodiment, the case where the coating area of the coating layer 6 (non-adhesive) of the weak adhesive portion 4 gradually decreases toward the adhesive portion 2 has been described. For example, as shown in FIG. 5, the coating area of the weak adhesive portion 4 may be three stages (for example, the coating area 60% portion 4a, the 40% portion 4b, and the 20% portion 4c). And may become smaller toward the adhesive portion 2 side.

Further, in the above embodiment, the weak adhesive portion 4 having a weak adhesive force is provided between the adhesive portion 2 and the non-adhesive portion 3, but without the weak adhesive portion 4, for example, as shown in FIG. Alternatively, the protruding portion 2 a protruding toward the non-adhesive portion 3 may be formed on the adhesive portion 2.

The label is provided with an adhesive 5 on the entire back surface of the label substrate 1 and a non-adhesive portion 3 as in the above embodiment.
The entire adhesive 5 is coated with a non-adhesive coating layer 6, and the adhesive portion 2 is formed by exposing the entire adhesive 5.
Is formed in a C-shape that linearly spreads toward the adhesive portion 2 so that the area increases at a constant rate toward the adhesive portion 2 side.

The label is positioned such that the non-adhesive portion 3 is located on the rear side in the opening direction A, and the adhesive portion 2 is superimposed on the separation start portion 9a and is adhered to the packaging film 8 so that the separation start portion 9a The protruding portion 2a will be located further behind,
Moreover, since the area of the protruding portion 2a gradually increases toward the front side in the opening direction A, the protruding portion 2a having a small area can be easily peeled off from the packaging film 8 at the time of opening, and The peeling can also be gradually performed along the opening direction A. Therefore, the opening operation can be performed easily and smoothly.

The protrusion 2a may have various shapes. For example, the protrusion 2a may be formed in a rectangular shape as shown in FIG. 7, and the area of the protrusion 2a may be constant along the opening direction A. In this case as well, the peeling work at the time of opening can be easily performed because the protruding portion 2a having a small area is peeled first. However, as in the above-described embodiment, the projecting portion 2a is formed so that the area gradually increases toward the adhesive portion 2 side. As a result, since the peeling force can be gradually increased, there is an advantage that the peeling can be performed more smoothly. The projection 2a may be provided with a weakly adhesive portion 4, so that it can be opened more smoothly.

Also, as shown in FIG.
a, and a weakly adhesive portion 4 in which a non-adhesive coating layer 6 is partially provided between the adhesive portion 2 and the non-adhesive portion 3 may be formed. Can be peeled off.

In the above embodiment, in order to cope with the case where the opening direction A of the packaging film 8 is one direction, the adhesive portion 2 is provided at one end on the back surface of the label substrate 1, and the non-adhesive portion is provided at the other end. Although the configuration provided with the adhesive portion 3 has been described, a configuration corresponding to the cutout portion 9 that can be opened in two directions may be used. For example, as shown in FIG. 9, non-adhesive portions 3 and 3 are provided at both ends in the longitudinal direction and an adhesive portion 2 is provided at the center on the back surface of the label substrate 1, and the adhesive portion 2 and the non-adhesive portions 3 and 3 are provided. Weak adhesive part 4,
4 may be provided to handle opening in two directions. In this embodiment, as shown in FIG. 9, the adhesive portion 2 is positioned so as to cover the notch 9 in a horizontal H shape along the opening directions A and B, and the label is placed along the opening directions A and B of the packaging film 8. Is attached, the non-adhesive portions 3 and 3 are located on the rear side in the opening directions A and B, and the weak adhesive portions 4 and 4 are located on the front side of the non-adhesive portions 3 and 3. Therefore, the packaging film 8 can be opened in two directions by one label, the degree of freedom of opening can be increased as compared with one direction, and even in any of the opening directions A and B. Another advantage is that it can be peeled off from the packaging film 8 and can be easily opened. In this embodiment, the weak adhesive portions 4 are provided. However, as described above, the projecting portions 2a projecting toward the non-adhesive portion 2 may be provided on both sides to cope with opening in two directions. As described above, the present invention is not limited to the number of the opening directions of the packaging film 8. The non-adhesive portion 3 is provided outside the label substrate 1, and the adhesive portion 2 is provided inside the non-adhesive portion 3. By providing the weak adhesive portion 4 and the protruding portion 2a between the two 2 and 3, it is possible to cope with a plurality of opening directions.

In the above embodiment, the adhesive 5 provided on the entire back surface of the label substrate 1 is entirely or partially covered with the non-adhesive, so that the non-adhesive portion 3 and the weak adhesive portion 4 are covered.
However, the present invention is not limited to this, and the adhesive 5 may be applied only to the adhesive portion 2 or the adhesive 5 having a lower adhesive strength than the adhesive 5 of the adhesive portion 2. May be applied to form the weak adhesive portion 4.

However, as in the above-described embodiment, the adhesive 5 is provided on the entire back surface, and the adhesive 5 is covered with the non-adhesive to form the non-adhesive portion 3 or the weakly-adhesive portion 4, whereby the label is formed. Has the advantage that the non-adhesive portion 3 having substantially no tackiness, the exposed adhesive portion 2 and the like can be formed into various shapes and can be easily formed at an arbitrary position. In particular, the covering area of the weak adhesive portion 4 is changed in the opening direction A
There is an advantage that the adhesive force of the weak adhesive portion 4 can be easily controlled, for example, by changing along. Furthermore, since the coating film layer 6 can be formed by printing, there is also an effect that the weakly adhesive portion 4 and the non-adhesive portion 3 can be simultaneously formed.
In addition, since the coating layer 6 is extremely thin compared to the thickness of the adhesive 5, the thickness of the opened label can be made substantially uniform.
There is an advantage that appearance is good without irregularities on the surface in the state of sticking to the packaging film 8, and that the printing of the arrow indicating the opening direction A and the so-called bar code can be made uniform.

Further, the materials of the label substrate 1, the adhesive 5, and the packaging film 8 are not particularly limited.
For example, it may be a rice ball or the like. As described above, when the label is attached to the packaging film 8 in which the easily wrapped object such as the rice ball is wrapped, it is not necessary to strongly hold the wrapped object at the time of opening. Is particularly large.

Further, the shape of the cut portion 9 may be of various shapes such as a V-shape, and the adhesive portion 2 is formed by the separation start portion 9a of the cut portion 9.
If the label is affixed so as to be superimposed on the packaging film 8, the packaging film 8 can be reliably separated from the separation start portion 9a and opened when opening.

[0033]

According to the label for opening a packaging film of the present invention, a weak adhesive portion having a lower adhesive strength than the adhesive portion is provided between the adhesive portion and the non-adhesive portion. At the time of opening, the label can be easily peeled off from the packaging film with a smaller force than before, and the label can be opened smoothly. Therefore, there is no possibility that the packaged object wrapped in the packaging film is deformed by the force at the time of opening, and the state of the packaged object such as the container or the rice ball before opening can be surely maintained.

According to the third aspect of the present invention, since the adhesive portion has a projecting portion projecting toward the non-adhesive portion, only the projecting portion is first peeled off and peeled off. The required force can be reduced, and the packaging film can be opened smoothly. Therefore, there is no possibility that the packaged object wrapped in the packaging film is deformed by the force at the time of opening, and the state of the packaged object such as the container or the rice ball before opening can be surely maintained.

[Brief description of the drawings]

FIG. 1 is a plan view showing an opening label of a packaging film according to an embodiment of the present invention.

FIG. 2 is a front view of the same.

3A and 3B show a main part of an opening label of a packaging film according to an embodiment of the present invention, wherein FIG. 3A is a plan view of the main part, and FIG.

FIG. 4 is a perspective view showing a use state of the opening label of the packaging film in one embodiment of the present invention.

FIG. 5 is a plan view showing an opening label of a packaging film in another embodiment.

FIG. 6 is a plan view showing an opening label of a packaging film in another embodiment.

FIG. 7 is a plan view showing an opening label of a packaging film in another embodiment.

FIG. 8 is a plan view showing an opening label of a packaging film in another embodiment.

FIG. 9 is a plan view showing an opening label of a packaging film in another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Label base material, 2 ... Adhesive part, 2a ... Protrusion part, 3 ... Non-adhesive part, 4 ... Weak adhesive part, 5 ... Adhesive, 6 ... Coating layer, 7 ... Container, 8 ... Packing film, 9 ... Cut part, 9a ... separation start part

Claims (4)

[Claims] 1. An adhesive portion (2) on the back surface of a label substrate (1)
In the opening label of the packaging film provided with the non-adhesive part (3) and the non-adhesive part (3), the adhesive strength between the adhesive part (2) and the non-adhesive part (3) is lower than that of the adhesive part (2). An opening label for a packaging film, comprising an adhesive portion (4). 2. An adhesive (5) is provided on the entire back surface of the label substrate (1), and the non-adhesive portion (3) is formed by covering the entire adhesive (5) with the non-adhesive. The weak adhesive portion (4) is formed by partially covering the adhesive (5) with a non-adhesive, and the adhesive portion (2) is entirely exposed to the adhesive (5); The label according to claim 1, wherein the weak adhesive portion (4) is formed such that the non-adhesive coating area of the weak adhesive portion (4) decreases from the non-adhesive portion (3) side toward the adhesive portion (2). . 3. An adhesive portion (2) on the back surface of the label substrate (1).
And an opening label of a packaging film provided with a non-adhesive portion (3), wherein the adhesive portion (2) has a protruding portion (2a) protruding toward the non-adhesive portion (3). Opening label for packaging film. 4. An adhesive (5) is provided on the entire back surface of the label substrate (1), and the non-adhesive portion (3) is formed by covering the entire adhesive (5) with the non-adhesive. The said adhesive part (2) becomes the whole adhesive (5) exposed.
Opening label of the packaging film described.