WO2012137965A1

WO2012137965A1 - Sealing label and packaging container

Info

Publication number: WO2012137965A1
Application number: PCT/JP2012/059660
Authority: WO
Inventors: 大四郎住吉; 幸人万野; 郁也西山; 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: CN103813965A; US20140158690A1; EP2695829A1; JP2012218767A; JP5732303B2

Abstract

This sealing label (1) has a first substrate (2) and a second substrate (3) bonded to a surface of the first substrate, and seals the opening of the packaging container by the second substrate joining to the opening in a manner allowing repeated release. This sealing label (1) is provided with a sealing unit (10) for sealing the opening, and a support unit (20) which is connected to at least one part of the sealing unit and is bonded to the packaging container. At the boundary between the sealing unit and the support unit there is a cut line (22) which extends in a direction intersecting the release direction in which the sealing unit is released. This cut line (22) separates the second substrate into a near region (3a) and a far region (3b) relative to the release direction. Between the first substrate and the second substrate is provided a release layer (23) which releases the first substrate and the second substrate farther the cut line in the release direction.

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. 2011-085561 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, in the packaging container described in Patent Document 1, since the opening / closing lid is formed of a film having rigidity to some extent, when the opening / closing lid is peeled off until the opening appears, Due to rigidity and elasticity, the body may fall over the opening, and the opening may be blocked unintentionally.
For this reason, for example, when the infant's butt is wiped with a wet tissue, the opening is closed by the opening / closing lid, and the second wet tissue cannot be taken out from the container as it is. There was a problem of inconvenience.

This invention is made | formed in view of the said situation, and it aims at providing the sealing label which is hard to return to the state which plugs up opening, when peeling from a packaging container.
Another object of the present invention is to provide a packaging container in which the state in which the opening is exposed suitably persists.

A first aspect of the present invention includes a sheet-like or film-like first base material, and a sheet-like or film-like second base material bonded to one surface of the first base material, A second label is a hermetically sealed label that is releasably joined to an opening of a packaging container to seal the opening, and is connected to a sealing portion that seals the opening, and at least a part of the sealing portion, and the packaging A support part joined to the container, and extends in a direction intersecting with a peeling direction for peeling off the sealing part at a boundary part between the sealing part and the support part, and the second base material is proximal in the peeling direction It has a cut line that separates into the side region and the peeling direction distal side region, and is located in the peeling direction distal side of the cut line and between the first base material and the second base material, A release layer for peeling the first base material and the second base material is provided. .

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 sealed label of the present invention, it is possible to make it difficult to return the label to a state in which the opening is closed while the contents are taken out from the packaging container when peeled from the packaging container.
Moreover, according to the packaging container of this invention, the state which the opening exposed can be maintained suitably.

It is a perspective view which shows the packaging bag with which the airtight label of 1st embodiment of this invention was attached. FIG. 2 is a cross-sectional view taken along line AA 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 A1-A1 of FIG. It is a perspective view which shows the packaging bag with which the airtight label of 2nd embodiment of this invention was attached. FIG. 6 is a cross-sectional view taken along line BB in FIG. 5. It is a perspective view in the state where the same packaging bag as FIG. 5 was opened. FIG. 8 is a cross-sectional view taken along line B1-B1 of FIG.

A first 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 the sealing label 1 of the present embodiment is attached. The hermetic label 1 is a label that can be freely opened and closed.
A packaging bag (packaging container) 50 to which the hermetic label 1 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 capable of maintaining 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 the vapor-deposited or coated PET film is configured as a single layer combining the surface material and the barrier material, it can be used as a single layer for a packaging bag. 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 hermetic label 1 is attached to the packaging bag 50 so that it can be repeatedly peeled off. The sealed label 1 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 AA in FIG. 1 and showing the upper surface portion of the packaging bag 50. As shown in FIG. 2, the sealing label 1 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 having the opening of the packaging bag 50, the hermetic label 1 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 tackiness by treating the surface 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 1 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. The first substrate 2 is not cut by the cut line 22. 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 place on the second substrate 3 or a known paste-killing treatment is applied to the adhesive layer 2A. It can be formed by performing (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.
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.

When manufacturing the packaging bag 50, the sealing label 1 is positioned and affixed to the laminated film F prepared beforehand. Then, as shown in FIG. 2, a cut-out C in the shape of the take-out port 51 is formed from the lower surface side where the sealing label 1 of the laminated film F is not pasted 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 1 and has no opening. When the contents are accommodated and sealed, 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 (hereinafter, referred to as “opening formation region F1”) of the laminated film F is adhered to the adhesive layer 3A of the second base material 3, and therefore, FIG. As shown, the take-out port 51 is exposed apart from other areas 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.

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 sealing label 1 of the present embodiment, the cut line 22 that separates the second base material 3 is provided at the boundary between the sealing portion 10 and the support portion 20, and the peeling layer is further provided in the peeling direction distal side region 3b. Since 23 is formed, when the sealing 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 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 the take-out port 51 of the packaging bag 50 is used for the purpose of sealing so as to be openable and closable, the exposed state of the take-out port 51 is suitably maintained, and the contents can be used easily.

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 1, 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 pressure-sensitive adhesive layer 2A is larger than the pressure-sensitive adhesive strength of the pressure-sensitive adhesive layer 3A, the first base material 2 is separated from the second base material in the region without the release layer 23 in the release direction distal region 3b. The situation where it peels is hard to occur. Thereby, when performing normal use, the situation where the sealing label 1 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 paste-killing process is performed on the exposed surface of the

adhesive layers

3A and 4A in the region covering the outlet in the sealed portion. You may keep it.

Next, a second embodiment of the present invention will be described with reference to FIGS. The difference between the sealed label 31 of the present embodiment and the above-described sealed label 1 is that a third base material that reinforces the outlet is provided. In the following description, components that are the same as those already described are assigned the same reference numerals and redundant description is omitted.

FIG. 5 is a perspective view showing the packaging bag 50 to which the sealing label 31 is attached, and FIG. 6 is a cross-sectional view taken along the line BB of FIG. As shown in FIGS. 5 and 6, a sheet-like or film-like third base material 4 having a shape that completely covers the take-out port 51 is attached to the sealing portion 10.

The third base material 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, but is preferably larger than the take-out port and the same shape as the opening or a similar shape. As shown in FIG. 6, the third base material 4 has an adhesive layer 4 A (third adhesive layer) on one surface facing the packaging bag 50 side. In the third base material 4, the other surface where the pressure-sensitive adhesive layer 4 A is not provided is subjected to an easy release treatment with a release varnish or the like, and the reinforcing base material 4 is the same as the pressure-sensitive adhesive layer 3 A of the second base material 3. It is sticky. As the material of the third substrate 4, the same material as the first substrate 2 and the second substrate 3 can be used. The pressure-sensitive adhesive layer 4 A has the same adhesive strength as the pressure-sensitive adhesive layer 3 A, and can be repeatedly peeled off and bonded to the packaging bag 50.

The sealed label 31 is provided with a second cut line 32 (third base material cut line) that is slightly larger than the take-out port 51 and that cuts only the third base material 4 and the adhesive layer 4A. The opening forming region F1 of the laminated film F is located inside the second cut line 32.
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. 6 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 in a 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.

In this embodiment, when the sealing part 10 is peeled for the first time, as shown in FIGS. 7 and 8, the region inside the second cut line 32 of the third base material 4 is peeled off from the packaging bag 50. .
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 third base material 4 (inner third base material). Is opened.
On the other hand, a region (hereinafter referred to as “reinforcing region 4a”) located outside the second cut line 32 of the third base material 4 has a substantially donut shape, The adhesive layer 4A on the other 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 4a (outer third base material) functions as a reinforcing layer that reinforces the periphery of the take-out port 51, and it is suitably suppressed that wrinkles or tears occur around the take-out port 51.

According to the sealing label 31 of the present embodiment, since the third base material 4 is provided, a reinforcing region composed of a part of the third base material 4 remains around the take-out port 51 when opened. Therefore, in addition to having the same effect as the sealed label 1 of the first embodiment, it is possible to prevent damage around the take-out port 51 and maintain the beauty.

In addition, a point-like paste-killing process is performed on a predetermined area of the pressure-sensitive adhesive layer 4A. 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 from the third base material 4 and the reinforcing region being peeled from the packaging bag 50 can be suitably prevented.

The embodiments of the present invention have been described above. However, the technical scope of the present invention is not limited to the above-described embodiments, and various modifications may be made to each component without departing from the spirit of the present invention. It is possible to delete, or to appropriately combine the components in each embodiment.

For example, in the sealed portion, the adhesive layer near the first end portion may be paste-killed so that the user can easily pick it up 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 that is unlikely to return to the state of closing the opening when peeled from the packaging bag.

DESCRIPTION OF

SYMBOLS

1, 31 Sealing label 2 1st base material 2A Adhesive layer 3 2nd base material 3A Adhesive layer 3a Peeling direction proximal side area | region 3b Peeling direction distal side area | region 4 3rd base material 4a Reinforcement area | region 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 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 sheet-like or film-like first base material and a sheet-like or film-like second base material joined to one surface of the first base material, wherein the second base material is an opening of a packaging container A sealing label that is releasably joined to seal 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
The boundary between the sealing portion and the support portion extends in a direction intersecting the peeling direction for peeling the sealing portion, and the second base material is separated into a peeling direction proximal region and a peeling direction distal region. Have a cut line to separate,
A peeling layer for peeling the first base material and the second base material is provided between the first base material and the second base material on the distal side in the peeling direction from the cut line. A sealed label characterized by
The hermetic label according to claim 1, wherein the cut line does not separate the first substrate.
The hermetic label is a laminate in which the first base material, the first adhesive layer, the second base material, and the second adhesive layer are laminated in this order, and the adhesive strength of the first adhesive layer is the second The sealing label according to claim 1, wherein the sealing label is greater than the adhesive strength of the adhesive layer.
The hermetic label according to claim 1, wherein the release layer is a layer formed by applying a release varnish on the second substrate.
The hermetic label according to claim 1, wherein the release layer is a layer formed by performing a paste-killing treatment on the pressure-sensitive adhesive layer.
The hermetic label according to claim 1, wherein the cut line and the release layer are connected.
The hermetic label of claim 1, wherein the first substrate and the second substrate are selected from synthetic paper, polyethylene terephthalate, polypropylene, and blends of these resins.
The sealing label according to claim 1, wherein the sealing part has a substantially pentagonal shape as a whole.
The third base material is disposed on the surface of the second base material opposite to the side on which the first base material is disposed, and the third base material has an inner reinforcing base material and a substantially donut shape by a cut line that cuts the third base material. The sealed label according to claim 1, which is divided into an outer reinforcing base material.
A packaging container having an opening and containing contents therein,
A sealed container according to claim 1, wherein the sealed label is joined so as to cover the opening.
The hermetic label is a laminate in which the first base material, the first adhesive layer, the second base material, and the second adhesive layer are laminated in this order, and the adhesive strength of the first adhesive layer is the second The packaging container according to claim 10, wherein the packaging container is larger than the adhesive strength of the adhesive layer.
The packaging container according to claim 10, wherein the packaging container has an opening and an opening forming region that is an inner portion thereof, and the opening forming region adheres to the hermetic label.