WO2012137966A1

WO2012137966A1 - Sealing label and packaging container

Info

Publication number: WO2012137966A1
Application number: PCT/JP2012/059665
Authority: WO
Inventors: 大四郎住吉; 幸人万野; 誠飛田; 坂東　健司; 隆宏植田
Original assignee: 凸版印刷株式会社; 株式会社トッパンＴｄｋレーベル; ユニ・チャーム株式会社
Priority date: 2011-04-07
Filing date: 2012-04-09
Publication date: 2012-10-11
Also published as: JP6017116B2; JP2012218766A

Abstract

Provided is a sealing label (31) which seals a removal port (51) of a packaging bag (50) and is joined to the removal port so as to allow repeated release. This sealing label is provided with a sealing unit (10) for sealing the removal port, and a support unit which is connected to at least one part of the sealing unit and bonded to the packaging bag. Further provided is a sheet- or film-form reinforcing substrate (4) bonded to the surface of the sealing unit on the removal port side. When the sealing unit is released and the removal port exposed, at least one part of the reinforcing substrate remains in the periphery of the removal port.

Description

Sealed label and packaging container

The present invention relates to a hermetic label, and more particularly to a hermetic label that is releasably bonded to the surface of the packaging container and seals the packaging container, and a packaging container that includes the hermetic label.
This application claims priority based on Japanese Patent Application No. 2011-085560 filed in Japan on April 7, 2011, the contents of which are incorporated herein by reference.

Conventionally, a wet tissue in which a non-woven fabric or tissue paper is impregnated with a chemical or the like is widely known. When such a wet tissue is used as a portable wet tissue, it is generally distributed and used by being stored in a packaging bag formed of a soft film or the like and having an opening serving as a take-out port. .

In such a wet tissue, it can be repeatedly peeled off at the opening of the packaging bag in order to maintain the wettability of the wet tissue contained in the packaging bag until use and to prevent foreign matter from entering the packaging bag. Often a tight label is attached. In this case, when taking out the wet tissue, the sealing label is peeled to expose the opening, and after taking out, the opening is sealed by adhering the peeled sealing label to the packaging bag so as to cover the opening (for example, patent document). 1).

Japanese Patent No. 3512211

However, the packaging container described in Patent Document 1 has a problem that wrinkles or the like are generated around the opening as the opening / closing lid is repeatedly opened and closed, making it difficult to take out the contents and impairing the beauty.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a hermetic label in which wrinkles and the like are unlikely to occur in the opening of a packaging container even when opening and closing is repeated.
Another object of the present invention is to provide a packaging container in which wrinkles and the like are unlikely to occur even when continuously opened and closed.

A first aspect of the present invention is a sealing label that is releasably joined to an opening of a packaging container to seal the opening, and is connected to a sealing part that seals the opening and at least a part of the sealing part And a support part joined to the packaging container, further comprising a sheet-like or film-like reinforcing base joined to the opening-side surface of the sealing part, peeling the sealing part and opening the opening When the is exposed, at least a part of the reinforcing base material remains around the opening.

A second aspect of the present invention is a packaging container having an opening and containing contents therein, wherein the hermetic label of the present invention is joined so as to cover the opening.

According to the hermetic label of the present invention, it is possible to obtain a hermetic label in which wrinkles and the like are unlikely to occur in the opening of the packaging container even when opening and closing is repeated.
Moreover, according to the packaging container of this invention, it can be set as a packaging container which is hard to produce a wrinkle etc. in opening even if it opens and closes continuously.

It is a perspective view which shows the packaging bag with which the airtight label of one Embodiment of this invention was attached. FIG. 3 is a cross-sectional view taken along line BB in FIG. It is a perspective view in the state where the same packaging bag as FIG. 1 was opened. FIG. 4 is a cross-sectional view taken along line B1-B1 of FIG.

An embodiment of the present invention will be described with reference to FIGS.
Note that the following description does not limit the present invention unless otherwise specified. In the present invention, addition, omission, replacement, and other changes can be made in the position, number, shape, and the like without departing from the spirit of the present invention. For ease of explanation, the structure shown in the figure may be different from the actual scale.
FIG. 1 is a perspective view showing a packaging bag 50 to which a sealing label 31 of this embodiment is attached. The sealing label 31 is an openable / closable label. A packaging bag (packaging container) 50 to which the hermetic label 31 is attached is a container that is formed in a predetermined shape and accommodates contents. The material and structure of the packaging bag 50 may be arbitrarily selected as long as there is no problem. It is preferable to use a material that can maintain the wettability of the contents. It may be formed from one layer, or may be formed from a laminate composed of two or more layers.
For example, it can be formed from a known laminated film such as a laminated film in which a polyethylene terephthalate (PET) film, an aluminum foil, and a heat-sealable film called a sealant are laminated in order from the surface (outside) and bonded. . The laminated film may be one in which aluminum, silica, or alumina is vapor-deposited on a PET film, and a heat-sealable film is laminated on the inner surface. Any of the above-described layers may be included or combined.
Specific examples of materials that can be preferably used for the packaging bag are listed below. Examples of the surface material that is preferably used on the surface side include films, such as PET, OPP (biaxially stretched polypropylene film), nylon, and PVC (polyvinyl chloride), and materials having a foil shape such as paper. . As a barrier material that can be preferably used as a barrier, a material excellent in water vapor and oxygen barrier properties, such as aluminum foil or PET film deposited or coated with silica or alumina, or PET coated with vinylidene chloride, etc. Etc. In addition, since a vapor-deposited or coated PET film is configured as a single layer combining a surface material and a barrier material, it may be used as a packaging bag as it is, or in combination with another layer. Is possible. Heat-seal film has a lower film melting point than surface materials, such as CPP (unstretched polypropylene film) and PE (polyethylene) films, and films formed by coating on the inside of barrier materials, allowing fusion bonding Film.

The packaging bag 50 has a heat-sealable film on the inside, and contains the contents 100 therein (see FIG. 3). In this embodiment, a wet tissue 60 obtained by impregnating a non-woven fabric or tissue paper with a chemical solution or the like is stored in the packaging bag 50 as the content 100.
The laminated film forming the packaging bag 50 does not transmit water or oxygen and has excellent airtightness. For this reason, drying of the wet tissue 60 can be prevented, and the wet state can be kept in the packaging bag 50 until use. The specific shape of the packaging bag 50 and the layer configuration of the laminated film constituting the packaging bag 50 may be changed as appropriate according to the characteristics of the contents 100 and the like.
One of the surfaces of the packaging bag 50 is formed with an outlet (opening) 51 from which the wet tissue 60 is taken out during use. The shape of the take-out port 51 can be set as appropriate. For example, it may be circular, rectangular or square. In the present embodiment, the shape is an ellipse.

The sealing label 31 is attached to the packaging bag 50 so that it can be repeatedly peeled. The sealed label 31 covers the take-out port 51 so that the wet tissue 60 is not exposed to the outside air in a state where it is joined to the packaging bag 50.
FIG. 2 is a cross-sectional view taken along the line BB in FIG. 1 and showing the upper surface portion of the packaging bag 50. As shown in FIG. 2, the sealing label 31 includes a sheet-like or film-like first base material 2 having an adhesive layer 2A (first adhesive layer) formed on one surface, and an adhesive on one surface. The sheet-like or film-like second base material 3 on which the layer 3A (second pressure-sensitive adhesive layer) is formed is laminated. The 1st base material 2 is laminated | stacked so that the adhesive layer 2A may be arrange | positioned on the surface on the opposite side to 3 A of adhesive layers on the 2nd base material 3. FIG. The pressure-sensitive adhesive layer 3A of the second base material 3 is a known re-peelable pressure-sensitive adhesive layer, and is formed of a material that can be repeatedly peeled off and adhered. By bonding the pressure-sensitive adhesive layer 3 A to the surface of the packaging bag 50 having the opening, the hermetic label 31 is bonded so as to cover the take-out port 51. The adhesive strength of the adhesive layer 2A is set larger than the adhesive strength of the adhesive layer 3A.
In the present invention, a surface which has been given adhesiveness or tackiness by surface treatment of the substrate may also be called an adhesive layer.
The material of the first base material 2 and the second base material 3 can be arbitrarily selected. For example, PET, polypropylene such as biaxially stretched polypropylene (OPP), or a blend thereof, synthetic paper, or any other material can be selected. Resins etc. which can be used can be used suitably.

As shown in FIG. 1, the sealing label 31 includes a sealing portion 10 that seals the take-out port 51 and is opened and closed, and a support portion 20 that is connected to and supports the sealing portion 10.
The sealing part 10 has a first end part 10A and a second end part 10B. In plan view, the first end portion 10A located at the end in the longitudinal direction has a pointed tip, and the widthwise dimension of the sealing portion 10 increases once from the first end portion 10A toward the second end portion 10B and then decreases. The sealing part 10 is formed in a substantially pentagonal shape as a whole. The sealing portion 10 has the first end portion 10A or the vicinity thereof and is peeled in the longitudinal direction (peeling direction), that is, peeled toward the side where the second end portion 10B exists, whereby the packaging bag 50 The take-out port 51 can be exposed.
In addition, the shape of the sealing part 10 is not restricted to the thing of this embodiment. In consideration of the design and the like, it is possible to make appropriate changes such as making the side extending in the peeling direction parallel to a part of the periphery or making the part of the periphery curved.

The second end portion 10B of the sealing portion 10 is connected to the support portion 20 as shown in the figure. A pair of cuts 21 are formed in the vicinity of both ends of the boundary between the support portion 20 and the sealing portion 10 so as to extend on an extension line from the width direction end portion of the second end portion 10B. When the sealing portion 10 is peeled off by the pair of cuts 21, the peeling force does not easily act on the support portion 20. The distance between the pair of cuts 21 increases as the distance from the second end 10B approaches the first end 10A. At the position not in contact with the second end portion 10B, the ends of the pair of cuts 21 form a U shape. In the present invention, the notch 21 is not essential. For example, there may be no cut 21 and only the cut line 22 (laminated body cut line) and the release layer 23 may be provided.

As shown in FIG. 2, a cut line 22 that cuts only the pressure-sensitive adhesive layer 3 A and the second base material 3 is formed at the boundary between the sealing portion 10 and the support portion 20 shown in FIG. 1. The first substrate 2 is not cut. The cut line 22 extends between the pair of cuts 21 so as to be orthogonal to (including substantially orthogonal to) the peeling direction, and the second base 3 is separated from the peeling direction proximal region 3a and the peeling direction distal region. It is separated into 3b.
A peeling layer 23 having a predetermined width and length is provided between the first base material 2 and the second base material 3 in at least a part of the peeling direction distal region 3b in contact with the cut line 22. As a result, the first base material 2 and the second base material 3 are easily peeled off. That is, the boundary part between the support part 20 and the sealing part 10 is peeled off by the effect of the peeling layer 23 between the part where the pressure-sensitive adhesive layer 2A and the second base material 3 are bonded, and the pressure-sensitive adhesive layer 2A and the second base material 3. And an easy-to-use part. The release layer 23 and the cut line 22 are preferably connected to each other, and the sealing label 31 is divided into the sealing portion 10 and the support portion 20 together with the notch 21. The release layer 23 may be formed by an arbitrary method as long as a release portion can be formed. For example, a known release varnish is applied to a predetermined location on the second substrate 3 or a known location on the pressure-sensitive adhesive layer 2A. It can be formed by performing a paste killing process (detack process).
In the laminated body, the upper part (the side where the reinforcing base material 4 is present) is peeled off from the release layer 23, and the lower part is not peeled from the release layer 23. For convenience, a terminal line (side) extending in the width direction of the release layer 23 and positioned on the support portion side may be considered as the boundary between the sealing portion 10 and the support portion 20. The position and size of the cut line 22 and the cut 21 can be arbitrarily selected, but the cut line 22 is preferably formed over the entire width of the peeling portion of the support portion 20 that reaches the cut 21. The release layer 23 is also preferably provided along the entire length of the cut line 22. It is also preferable that the cut line 22 and the release layer 23 have the same length. It is also preferable that the release layer 23 is continuous with the laminate cut line 22 on the support portion side.
In FIG. 2, the release layer 23 is shown as a structure embedded in the second substrate 3, but the present application is not limited to this, and the release layer 23 is disposed on the flat surface of the second substrate. This structure is also included in the present application.

A sheet-like or film-like reinforcing substrate 4 having a shape that completely covers the take-out port 51 of the packaging bag 50 is attached to the sealing portion 10.
The reinforcing base 4 has an oval shape that is slightly larger than the take-out port 51 of the packaging bag 50, and has a smaller area than the sealed portion 10 so as not to protrude from the sealed portion 10. The shape of the reinforcing substrate 4 can be arbitrarily selected, such as an ellipse, a circle, and a square. As shown in FIG. 2, the reinforcing base 4 has a pressure-sensitive adhesive layer 4 A (third pressure-sensitive adhesive layer) on one surface facing the packaging bag 50. In the reinforcing base material 4, another surface where the pressure-sensitive adhesive layer 4 A is not provided is subjected to easy peeling treatment with a peeling varnish or the like, and the reinforcing base material 4 is integrated with the pressure-sensitive adhesive layer 3 A of the second base material 3. It has become. As the material of the reinforcing base 4, the same material as the first base 2 and the second base 3 can be used. The pressure-sensitive adhesive strength of the pressure-sensitive adhesive layer 4 A that has been subjected to easy peeling treatment with a peeling varnish or the like is set to be equal to or lower than that of the pressure-sensitive adhesive layer 3 A and can be repeatedly peeled and bonded to the packaging bag 50. The adhesive layer 4A may be paste-processed at a predetermined position.

The sealed label 31 is provided with a second cut line 32 (reinforcing base material cut line) that is slightly larger than the outlet 51 and that cuts only the reinforcing base material 4 and the adhesive layer 4A.
In addition, the adhesive layer 4A is formed on the surface of the adhesive layer 4A to be joined to the packaging bag 50 and in the peripheral portion of the region surrounded by the second cut line 32 by the netting or dot-like printing of the paste-killing agent. A paste killing process (not shown) is performed. The type of paste-killing agent and the density of the net-like or dot-like printing are determined by the set peel strength, and may be, for example, 30 to 50%. The region to be subjected to the paste killing process can be arbitrarily selected. For example, an oval annular shape (substantially donut shape) having a line width D1 shown in FIG. 2 may be processed. The line width D1 is preferably set so as to include at least a region located between the second cut line 32 and the cut C (described later) in the plan view of the packaging bag 50 having the hermetic label 31. .
The line width D1 is such that when the sealing label 31 is peeled off, the annular portion 4a of the reinforcing substrate remaining on the laminated film F can maintain adhesion to the laminated film F, and the opening forming region F1 is an adhesive layer. It is preferable to select so that adhesion to 4A can be continued. That is, when viewed from the cross section, the line width D1 includes the cut line C and the second cut line 32, and it is preferable that the outermost portion of the line width D1 does not exceed the outer periphery of the reinforcing substrate 4a. It is more preferable not to exceed the center of the width. It is preferable that the third pressure-sensitive adhesive layer of the reinforcing base material is paste-killed in a substantially donut shape covering the second cut line 32.

When manufacturing the packaging bag 50, the sealing label 31 is positioned and affixed to the laminated film F prepared beforehand. Then, as shown in FIG. 2, from the lower surface side where the sealing label 31 of the laminated film F is not affixed, a cut C having the shape of the take-out port 51 is inserted to form the take-out port 51. The depth of the cut C is preferably set such that the laminated film F is reliably cut and the second substrate 3 is not cut.
Thereafter, the laminated film F is bonded to another laminated film F which is not attached with the sealing label 31 and has no opening, and the contents are accommodated and sealed, whereby the packaging bag 50 is completed.

The operation | movement at the time of use of the packaging bag 50 formed as mentioned above is demonstrated.
When the user holds the first end portion 10 A of the sealing portion 10 and pulls it in the peeling direction in order to take out the contents from the packaging bag 50 having the sealing label 31, the sealing portion 10 is peeled off from the packaging bag 50. At this time, the region surrounded by the cut C in the laminated film F (hereinafter referred to as “opening region F1”) is adhered to the adhesive layer 4A of the reinforcing base 4 and is shown in FIG. As described above, the take-out port 51 is exposed apart from the other area of the laminated film F together with the sealing portion 10.

When the sealing portion 10 is further peeled and reaches the cut line 22, the first base material 2 becomes the second base material 3 due to the presence of the cut line 22 and the release layer 23 thereafter as shown in FIGS. 3 and 4. Is peeled off. For this reason, the peeling direction distal side region 3 b of the second base material 3 is maintained while being adhered to the packaging bag 50 and does not follow the sealed portion 10. That is, the distal region 3 b is not peeled off from the film of the packaging bag 50. Moreover, since the site | part which connects the sealing part 10 and the connection part 20 is comprised only by the 1st base material 2 containing 2 A of adhesion layers, rigidity is low. Therefore, even if the user removes his / her hand from the sealing part 10, the exposed state of the take-out port 51 is maintained.

When the sealing part 10 is peeled for the first time, the region inside the second cut line 32 of the reinforcing base 4 is peeled off from the packaging bag 50 as shown in FIGS. 3 and 4. At this time, the opening forming region F1 on the inner side of the cut C formed on the film F moves together with the sealing portion 10 while being adhered to the reinforcing base material 4 (inner reinforcing base material), so that the take-out port 51 is opened. The
On the other hand, a region of the reinforcing base 4 located outside the second cut line 32 (hereinafter referred to as “reinforcing region 4a”) has a substantially donut shape, and the easy peeling treatment on one side and the other The adhesive layer 4A on the surface is more strongly adhered to the packaging bag 50 than the second base material 3. For this reason, it does not follow the movement of the sealing part 10 accompanying peeling, and remains around the take-out port 51.
The reinforcing region 4 a (outer reinforcing base) functions as a reinforcing layer that reinforces the periphery of the take-out port 51, and it is suitably suppressed that wrinkles or tears are generated around the take-out port 51.

In this manner, the user can take out the wet tissue 60 from the take-out port 51 and perform a desired operation while keeping the packaging bag 50 of the present invention at hand. Even when the second and third wet tissues are continuously taken out, the exposed state of the take-out port 51 is maintained, so that it is not necessary to peel off the sealed portion again, and the operation can be performed smoothly.
After the use of the wet tissue 60, when the sealing portion 10 is joined again to the packaging bag 50 and the take-out port 51 is sealed, the wet tissue 60 in the packaging bag 50 is sufficiently prevented from being dried, and into the packaging bag 50. The entry of foreign matter is also prevented.

According to the sealed label 31 of the present embodiment, since the reinforcing substrate 4 is provided, the reinforcing region 4a formed of a part of the reinforcing substrate 4 remains around the take-out port 51 when opened. Therefore, damage around the take-out port 51 can be prevented, and the beauty can be maintained.

Also, a predetermined area of the pressure-sensitive adhesive layer 4A is subjected to a net-like or dot-like paste killing process. For this reason, in the said area | region, the site | part with comparatively high adhesive strength and the low site | part are distributed in the shape of a net | network or dots. For this reason, compared with the case where the paste-killing process is performed on the entire surface of the region, the chemical solution impregnated in the wet tissue 60 is less likely to spread in this region. As a result, problems such as the opening forming region F1 being peeled off from the reinforcing base material 4 and the reinforcing region being peeled off from the packaging bag 50 can be suitably prevented.

Furthermore, the sealing label 31 is closed so that the reinforcing substrate 4 and the opening forming region F1 protruding with a step on the lower surface of the sealing portion 10 are fitted into the reinforcing region 4a. For this reason, the airtightness after opening the packaging bag 50 is kept high.

Moreover, since the cut line 22 which separates the 2nd base material 3 is provided in the boundary part of the sealing part 10 and the support part 20, and also the peeling layer 23 is formed in the peeling direction distal side area | region 3b, it sealed When the part 10 is peeled off, the connection part between the sealing part 10 and the support part 20 becomes thin, and the rigidity becomes lower than that of the laminated sealing label 1 itself.

Therefore, even if the user releases the support of the sealing portion, the sealing portion does not return to the position before peeling, and the state where the take-out port 51 is exposed is preferably maintained. As a result, when used for the purpose of sealing the take-out port 51 of the packaging bag 50 so that it can be opened and closed, the exposed state of the take-out port 51 can be suitably maintained as desired, and the contents can be easily taken out.

Moreover, in the conventional sealing label, if the sealing portion is pulled too strongly at the time of peeling, the support portion may be peeled off from the packaging bag. On the other hand, in the sealing label 31, when the sealing portion 10 is peeled until the peeling layer 23 is exposed, the force that pulls the sealing portion 10 thereafter sticks the first base material 2 and the second base material 3 exclusively. It acts on the agent layer 2A. The force pulling the sealing part 10 hardly acts on the pressure-sensitive adhesive layer 3A in the peeling direction distal side region 3b.
Therefore, the force pulling the sealing part 10 does not act so as to peel the support part 20 from the packaging bag 50. In addition, since the adhesive strength of the adhesive layer 2A is larger than the adhesive strength of the adhesive layer 3A, the first substrate peels from the second substrate in the region without the release layer 23 in the distal direction region 3b in the release direction. It is hard to happen. Thereby, when performing normal use, the situation where the sealing label 31 whole is peeled from the packaging bag 50 at the time of peeling of the sealing part 10 can be prevented suitably.

In the present embodiment, an example in which the opening forming region F1 that is a part of the laminated film F is adhered to the sealing portion 10 and the take-out port 51 is exposed has been described. However, in the present invention, instead of this example, the opening forming region F1 is removed in advance, and a known glue is applied to the exposed surface of the adhesive layer 4A in the region (inner reinforcing base material) that covers the outlet in the sealed portion. You may be killed.

Although one embodiment of the present invention has been described above, the technical scope of the present invention is not limited to the above embodiment, and various modifications may be made to each component without departing from the spirit of the present invention. , Can be deleted.

For example, in the sealed label of the present invention, a cut line and a release layer are preferable but not essential. Therefore, the sealing label may be configured without including these configurations.
Further, in the sealed portion, the adhesive layer near the first end portion may be subjected to a paste killing process so that the user can easily pinch the processed part when performing the peeling operation.

Moreover, the content accommodated in a packaging bag is not specifically limited. Instead of the above-mentioned sanitary goods such as wet tissue, other articles such as food and sundries may be accommodated.
Furthermore, the hermetic label of the present invention is applicable to packaging containers other than packaging bags. For example, it may be used by being affixed to a resin or metal container having higher rigidity than the packaging bag.

The present invention provides a hermetic label in which wrinkles and the like are unlikely to occur at the opening of a packaging container even when opening and closing is repeated.

2 1st base material 2A Adhesive layer 3 2nd base material 3A Adhesive layer 3a Peeling direction proximal area 3b Peeling direction distal area 4 Reinforcement base material

4a Reinforcement area

4A Adhesive layer 10 Sealing part 10A First end Part 10B Second end part 20 Support part 21 A pair of cuts 22 Cut line 23 Peeling layer 31 Sealed label 32 Second cut line 50 Packaging bag (packaging container)
51 Exit (opening)
100 Contents C Cut D1 Line width F Laminated film F1 Opening formation area

Claims

A sealing label that is releasably joined to the opening of the packaging container and seals the opening,
A sealing portion for sealing the opening;
A support part connected to at least a part of the sealed part and joined to the packaging container;
With
It further comprises a sheet-like or film-like reinforcing base joined to the opening-side surface of the sealing part,
When the sealing part is peeled and the opening is exposed, at least a part of the reinforcing base material remains around the opening.
The reinforcing base material is divided into an inner reinforcing base material and a substantially donut-shaped outer reinforcing base material by a reinforcing base material cutting line that cuts them.
The sealed label according to claim 1.
The sealing part and the support part of the sealing label are formed from the same laminate, and the laminate is a sheet-shaped or film-shaped first substrate, a first pressure-sensitive adhesive layer, a sheet-shaped or film-shaped second substrate. And the second adhesive layer is laminated in this order, and the adhesive strength of the first adhesive layer is a laminate that is greater than the adhesive strength of the second adhesive layer,
On the second pressure-sensitive adhesive layer of the sealed part, a reinforcing substrate is arranged,
The area of the reinforcing substrate is smaller than the area of the sealed part,
The sealed label according to claim 1.
The reinforcing substrate has a third pressure-sensitive adhesive layer on the surface opposite to the surface in contact with the second pressure-sensitive adhesive layer,
The surface of the reinforcing base that comes into contact with the second adhesive material layer has been subjected to easy peeling treatment.
The hermetic label according to claim 3.
The boundary between the sealing part and the support part is an end line of the release layer that extends in the width direction and is located on the support part side,
The release layer is disposed between the first pressure-sensitive adhesive layer and the second base material, and the release layer supports the laminate cut line that cuts the second pressure-sensitive adhesive layer and the second base material in the width direction. 4. The sealing label according to claim 3, which is continuous on the side.
The sealed label according to claim 3, wherein the first substrate and the second substrate are selected from synthetic paper, polyethylene terephthalate, polypropylene, and a blend of these resins.
The reinforcing base material is divided into an inner reinforcing base material and a substantially donut-shaped outer reinforcing base material by a reinforcing base material cutting line that cuts them.
The hermetic label according to claim 4, wherein the third pressure-sensitive adhesive layer of the reinforcing substrate covers the reinforcing substrate cut line and is paste-killed into a substantially donut shape.
The hermetic label according to claim 4, wherein the third pressure-sensitive adhesive layer of the inner reinforcing base is paste-killed.
The sealing label according to claim 1, wherein the sealing part has a substantially pentagonal shape as a whole.
A packaging container having an opening and containing contents therein,
A packaging container comprising the sealed label according to claim 1, wherein the sealed label is joined so as to cover the opening.
The reinforcing base material layer is divided into an inner reinforcing base material and a substantially donut-shaped outer reinforcing base material by a reinforcing base material cutting line that cuts them.
The packaging container according to claim 10.
The packaging container according to claim 10, wherein the packaging container has an opening and an opening forming area inside thereof, and the opening forming area is bonded to a third pressure-sensitive adhesive layer of the inner reinforcing base.