JP2023183261A - Label and gas generation unit - Google Patents

Abstract

To realize a label which can reduce the possibility that a gas generation agent flows over at the time of using a gas generation unit.SOLUTION: A label (10) includes: a first layer (11) for blocking a smell component; and a second layer (12) on the first layer, the second layer transmitting a smell component. The first layer can be separated from the second layer. The second layer includes a second base material (121) and a second adhesive layer (122) overlapping with the second base material, and the second layer has a base material including a white olefin resin.SELECTED DRAWING: Figure 1

Description

The present invention relates to a label used for a container containing a gas generating agent, and a gas generating unit using the label.

An example of a gas generating agent container is the fragrance container disclosed in Patent Document 1. The fragrance container has a volatilization plate with volatilization holes, and a sealing material is removably adhered thereon. The sealing material is provided with scale lines or score lines at predetermined positions. When using the aromatic agent container, when the sealing material is peeled off from the volatilization plate to a required scale line, a certain number of volatilization holes are opened and the aromatic agent is diffused. If you need a lot of fragrance, you can release a large amount of fragrance by pulling it off to the next graduation line.

JP2009-208798A

However, in the above-described fragrance container, since the volatilization hole is opened during use, there is a possibility that the fragrance may spill out of the container from the volatilization hole if the container is rolled over in that state. On the other hand, if the volatilization pores are covered with a so-called sustained release material that only diffuses the aroma in order to prevent the fragrance from spilling out of the volatilization pores, the sustained release properties may not be sufficient and the aroma will weaken. There was a problem.

One aspect of the present invention aims to realize a label or the like that can reduce the possibility that a gas generating agent or the like will spill when a gas generating unit is used, and can obtain sufficient sustained release properties.

In order to solve the above problems, a label according to one aspect of the present invention includes a first layer that blocks fragrance components, and a second layer that allows the fragrance components to pass through, on which the first layer is superimposed. , the first layer can be peeled off from the second layer, the second layer includes a second base material and a second adhesive layer superimposed on the second base material, and the second layer includes a second adhesive layer superimposed on the second base material, The second base material contains a white olefin resin.

According to the label or the like according to one aspect of the present invention, it is possible to reduce the possibility that the gas generating agent or the like will spill when the gas generating unit is used, and to obtain sufficient sustained release properties.

1 is a cross-sectional view schematically showing a gas generation unit including a label according to Embodiment 1. FIG. FIG. 2 is a cross-sectional view showing a state in which the gas generation unit according to the first embodiment is used. It is a graph showing an example of the difference in sustained release properties depending on the material of the second layer. 1 is a plan view of a gas generation unit according to Embodiment 1. FIG. FIG. 2 is a cross-sectional view showing a first example of the configuration of the label according to Embodiment 1 around the opening of the container. FIG. 3 is a cross-sectional view showing a second example of the configuration of the label according to the first embodiment around the opening of the container. FIG. 7 is a cross-sectional view showing a third example of the configuration of the label according to Embodiment 1 around the opening of the container. FIG. 3 is a plan view of a gas generation unit according to a second embodiment.

[Embodiment 1]
Hereinafter, one embodiment of the present invention will be described in detail. In the following description, "A to B" indicating a numerical range means "above A and below B" unless otherwise specified.

FIG. 1 is a cross-sectional view schematically showing a gas generation unit 1 including a label 10 according to a first embodiment. As shown in FIG. 1, the gas generating unit 1 includes a gas generating agent 30, a container 20, and a label 10. The gas generating agent 30 is, for example, an aromatic agent that emits a scent component. However, the gas generation unit 1 is equipped with a deodorant, a deodorizing agent, a repellent, an antiviral agent, or a disinfectant (chlorine, hypochlorous acid, etc.) as the gas generating agent 30. Good too. Moreover, although the gas generating agent 30 is spherical in FIG. 1, the shape of the gas generating agent 30 is not limited to this.

Container 20 accommodates gas generating agent 30 therein. The container 20 is a pillow bag made of a material having a structure that blocks fragrance components emitted by the gas generating agent 30. When the container 20 is a pillow bag, the pillow bag may have a laminated structure in which polyethylene terephthalate, aluminum, and unstretched polypropylene are laminated in this order, for example. Further, the pillow bag may have a laminated structure in which, for example, polyethylene terephthalate, nylon, and polyethylene are laminated in this order. Further, the container 20 may be a rigid resin container or a pouch.

The container 20 has an opening 21 for releasing the scent component emitted by the gas generating agent 30 to the outside. The opening 21 may be a region where a portion of the container 20 is removed, or may be a linear cut formed in the container 20. Further, the opening 21 may be a portion of the container 20 that has a sustained release property by forming a portion of the container 20 with a thin wall.

Label 10 covers opening 21. Label 10 includes a first layer 11 and a second layer 12. The label 10 is adhered to the container 20 such that the second layer 12 and the first layer 11 are arranged in this order from the side of the container 20.

The second layer 12 is a sustained release film that allows the fragrance component emitted by the gas generating agent 30 to permeate therethrough. The second layer 12 includes a second base material 121 and a second adhesive layer 122 in the thickness direction. The second adhesive layer 122 adheres the second layer 12 to the container 20 to which it is adhered. The second adhesive layer 122 is made of, for example, an acrylate resin, a urethane resin, a styrene resin, or the like.

The second base material 121 contains white olefin resin. The second base material 121 is, for example, white polyethylene. White polyethylene is polyethylene that contains pigments or polyethylene that has voids inside. Examples of pigments include titanium oxide or calcium carbonate. Moreover, voids are air spaces in polyethylene. A preferable void ratio is 1% to 30% by volume. Moreover, it is more preferable that the white polyethylene is polyethylene that contains a pigment and has voids inside. The thickness of the second base material 121 may be 10 μm to 100 μm. As a result of intensive studies on the material of the second base material 121, the inventor of the present application found that white polyethylene exhibits excellent sustained release properties.

White polyethylene has more voids in its structure than polyethylene, which does not contain pigments and has no internal voids. For this reason, it is considered that the aroma component emitted by the gas generating agent 30 is likely to be slowly released to the outside through the gaps existing in the structure of the white polyethylene. Experimental results showing the sustained release properties of white polyethylene will be described later.

The first layer 11 blocks fragrance components emitted by the gas generating agent 30. The first layer 11 is superimposed on the second layer 12. The first layer 11 includes a first base material 111 and a first adhesive layer 112 in the thickness direction. The first base material 111 may be, for example, polyethylene terephthalate resin, polypropylene resin, polyvinylidene chloride resin, vinyl chloride resin, or a base material coated with barrier vapor deposition or barrier coating on any of these resins. The thickness of the first base material 111 may be 20 μm to 100 μm. The first adhesive layer 112 is superimposed on the first base material 111 and adheres the first base material 111 to the second layer 12 . The first adhesive layer 112 is made of a removable adhesive. The first adhesive layer 112 is made of, for example, an acrylate resin, a urethane resin, a styrene resin, or the like.

The gas generation unit 1 shown in FIG. 1 is in an unused state. In the state shown in FIG. 1, the fragrance component emitted by the gas generating agent 30 is blocked by the label 10, particularly the first layer 11, and is not released to the outside of the container 20.

FIG. 2 is a sectional view showing the gas generation unit 1 in use. As shown in FIG. 2, in the label 10, the first layer 11 can be peeled off from the second layer 12. As described above, the second layer 12 allows fragrance components to pass through. Therefore, in the state shown in FIG. 2, the fragrance component emitted by the gas generating agent 30 is released to the outside of the container 20, as shown by the arrow 31.

The following experiment was conducted to determine the difference in sustained release properties depending on the material of the second base material 121. A 3 mm wide slit was provided as an opening 21 in a container 20 containing 2 grams of gel gas generating agent, and a label 10 was adhered to the container 20 so as to cover the slit. The container 20 was sealed in a bottle with the first layer 11 of the label 10 peeled off, and the intensity of the odor inside the bottle was measured every minute. XP-329III manufactured by Shin Cosmos Electric Co., Ltd. was used to measure the odor intensity inside the bottle. The strength of the odor indicates the degree of sustained release.

FIG. 3 is a graph showing an example of the difference in sustained release properties depending on the material of the second base material 121. In the graph shown in FIG. 3, the horizontal axis is the elapsed time (minutes), and the vertical axis is the intensity of the odor inside the bottle (in arbitrary units). The higher the value, the greater the sustained release property. FIG. 3 shows five types of graphs G1 to G5. Graphs G1 to G5 each show the sustained release properties of the second base material 121 made of the following materials.
Graph G1: White polyethylene manufactured by Company A (thickness 70 μm)
Graph G2: White polyolefin manufactured by Company B (thickness 85 μm)
Graph G3: Synthetic paper made by company A (thickness 80 μm)
Graph G4: Colorless OPP (Oriented Polypropylene) manufactured by Company A (thickness 20 μm)
Graph G5: Colorless polyethylene manufactured by Company C (thickness 20 μm)
Both the white polyethylene manufactured by Company A and the white polyolefin manufactured by Company B exhibit significantly higher sustained release properties than the thinner colorless polyethylene manufactured by Company C. Furthermore, white polyethylene manufactured by Company A exhibits significantly higher sustained release properties than synthetic paper and colorless OPP manufactured by Company A. From this, it can be said that the sustained release properties of white polyethylene and white polyolefin are high compared to the sustained release properties of other materials used in the experiment, regardless of thickness and manufacturer.

FIG. 4 is a plan view of the gas generation unit 1. As shown in FIG. 4, in a plan view of the gas generation unit 1, the first layer 11 has two first regions 11a and two second regions 11b different from the first regions 11a. However, the number of first regions 11a and second regions 11b that the first layer 11 has is not limited to this. Further, the numbers of the first regions 11a and the second regions 11b may be different from each other. Furthermore, the positional relationship between the first region 11a and the second region 11b is not limited to that shown in FIG. 4.

The first layer 11 is cut at the boundary between the first region 11a and the second region 11b. On the other hand, the second layer 12 is continuous in a region corresponding to the boundary between the first region 11a and the second region 11b. That is, the first layer 11 has a so-called half cut between the first region 11a and the second region 11b. Therefore, in the label 10, when the first layer 11 is peeled off from the second layer 12, the first region 11a and the second region 11b can be peeled off separately from each other. The half-cut may be provided in a continuous shape throughout the entire area between the first region 11a and the second region 11b, or may be provided in the shape of a discontinuous cut such as a broken line shape or a dashed-dotted line shape. .

In FIG. 4, the container 20 has four openings 21. The two openings 21 are covered by each of the two first regions 11a, and the remaining two openings 21 are covered by each of the two second regions 11b. However, the container 20 is not limited to the one shown in FIG. 4, and has a plurality of openings 21, at least one opening 21 is covered with the first region 11a, and at least one opening 21 is covered with the second region 11b. That's fine.

When starting to use the gas generation unit 1, the user peels off the first region 11a of the first layer 11 from the second layer 12. As a result, the opening 21 covered by the first region 11a is opened, and the fragrance component is released.

At the time when the first region 11a is peeled off from the second layer 12, the second region 11b remains on the second layer 12. In order to release a stronger scent, the user also peels off the second region 11b from the second layer 12. As a result, the number of opened openings 21 increases, and the amount of scent components released increases. Therefore, the user of the gas generation unit 1 can adjust the amount of scent components released by separately peeling off the first region 11a and the second region 11b. When the user of the gas generation unit 1 wants to finish using the gas generation unit 1, he/she only needs to adhere the first layer 11 to the second layer 12 again.

In the label 10, the direction in which the first region 11a is peeled off from the second layer 12 and the direction in which the second region 11b is peeled off from the second layer 12 may be different from each other. Thereby, the first region 11a and the second region 11b can be easily separated from the second layer 12.

Specifically, as shown in FIG. 4, a mark M indicating the direction in which the first region 11a is to be peeled may be printed on the first layer 11. Furthermore, a mark indicating the direction in which the second region 11b is to be peeled may be printed on the first layer 11. In this case, the mark indicating the direction in which the second region 11b is to be peeled indicates a direction different from the direction indicated by the mark M. Thereby, the user of the gas generation unit 1 can be made aware of the respective peeling directions of the first region 11a and the second region 11b. The mark M and the mark indicating the direction in which the second region 11b is to be peeled off are not limited to the arrows shown in FIG. 4, but may be, for example, a mark indicating an unsealed location. Moreover, instead of the mark M and the mark indicating the direction in which the second region 11b is to be peeled off, a part of the end of the first region 11a or the second region 11b, which is separated by a half-cut, is formed into a knob shape. You can. In this case, the direction from the knob-shaped portion toward the inside of the first region 11a or the second region 11b is the peeling direction. Further, the peeling method does not necessarily have to be in a straight line, and may be changed after peeling halfway.

Further, in the vicinity of the mark M, an adhesive suppressing layer that reduces the adhesiveness of the first adhesive layer 112 is provided, or the first adhesive layer 112 is not formed. Therefore, the adhesive force of the first region 11a is further reduced in the vicinity of the mark M, which is the starting position of peeling when the first region 11a is peeled from the second layer 12. The adhesive strength of the second region 11b is also reduced near the mark in the second region 11b. The side on which the mark M is shown in the first region 11a and the side on which the mark is shown in the second region 11b are different sides. For example, if the side on which the mark M is shown in the first region 11a is the right side, the side on which the mark M is shown in the second region 11b may be other than the right side, for example, the left side, the upper side, or the lower side. This can reduce the possibility that the second region 11b will also be removed by mistake when the first region 11a is removed.

FIG. 5 is a cross-sectional view showing a first example of the configuration of the label 10 around the opening 21. As shown in FIG. FIG. 5 shows a cross-sectional view around the opening 21 covered by the second region 11b. FIG. 5 also shows the container 20. The aspect ratio in FIG. 5 does not match the aspect ratio in the actual label 10. Moreover, the thickness of each member in FIG. 5 does not correspond to the actual thickness of each member.

In the example shown in FIG. 5 , the second layer 12 further includes a silicone layer 123 on the surface facing the first layer 11 . The silicone layer 123 is a layer formed of silicone resin. The adhesive strength of the first adhesive layer 112 to the silicone layer 123 is lower than the adhesive strength of the first adhesive layer 112 to the second base material 121. Therefore, the first layer 11 is easily peeled off from the second layer 12.

In the region including the silicone layer 123, the sustained release properties of the second layer 12 are lower than in the region not including the silicone layer 123. For this reason, the second layer 12 further includes a silicone mesh 124 instead of the silicone layer 123 in the region corresponding to the opening 21 . The silicone mesh 124 is a mesh-like silicone resin having gaps. By applying the silicone resin in a mesh shape, it is possible to adjust the area to which the silicone resin is applied. By providing the second layer 12 with the silicone mesh 124 in the region corresponding to the opening 21, the deterioration in sustained release properties in the region is reduced compared to when the silicone layer 123 is provided in the region.

The ratio of the area of the silicone mesh 124 to which silicone is actually applied is preferably 20% to 90% of the area of the area corresponding to the openings 21. If the above ratio is less than 20%, the decrease in adhesive strength of the first adhesive layer 112 to the second base material 121 will be small, making it difficult to separate the first layer 11 from the second layer 12. If the above ratio exceeds 90%, sustained release from the openings 21 covered by the silicone mesh 124 will be insufficient.

Furthermore, in the example shown in FIG. 5, the second layer 12 does not need to include either the silicone layer 123 or the silicone mesh 124 in the region corresponding to the opening 21. In this case, the sustained release properties of the second layer 12 in the region corresponding to the openings 21 will not deteriorate. However, in this case, the adhesive strength of the first layer 11 to the second layer 12 does not decrease in the entire region corresponding to the opening 21. Therefore, it becomes difficult to separate the first layer 11 from the second layer 12.

The silicone layer 123 and the silicone mesh 124 do not overlap the boundary between the first region 11a and the second region 11b. Specifically, the ends of the silicone layer 123 and the silicone mesh 124 are separated from the boundary between the first region 11a and the second region 11b by 1.5 mm or more.

In FIG. 5, in order to clearly show the structure of each layer, there is a gap between the first adhesive layer 112 and the second base material 121 in a region where the second layer 12 does not include either the silicone layer 123 or the silicone mesh 124. Existing. However, in reality, the first adhesive layer 112 and the second base material 121 are bonded to each other in a region where the second layer 12 includes neither the silicone layer 123 nor the silicone mesh 124 .

Therefore, the adhesive strength of the first layer 11 to the second layer 12 does not decrease near the boundary between the first region 11a and the second region 11b. Therefore, in a state where the first layer 11 is not peeled off from the second layer 12, the fragrance component can be prevented from being released from the opening 21 covered by the first layer 11.

FIG. 6 is a cross-sectional view showing a second example of the configuration of the label 10 around the opening 21. FIG. 6 shows a cross-sectional view around the opening 21 covered by the second region 11b. FIG. 6 also shows the container 20. The aspect ratio in FIG. 6 does not match the aspect ratio in the actual label 10. Further, the thickness of each member in FIG. 6 does not correspond to the actual thickness of each member.

In the example shown in FIG. 6, the second layer 12 does not include the silicone layer 123 and the silicone mesh 124, and the first layer 11 includes the adhesive suppressing layer 115. The adhesive suppressing layer 115 overlaps a part of the first adhesive layer 112. The adhesive suppressing layer 115 is, for example, varnish applied to the first adhesive layer 112.

The adhesive suppressing layer 115 reduces the adhesiveness of the first adhesive layer 112 to the second layer 12 . That is, the adhesive suppressing layer 115 reduces the adhesive strength of the first layer 11 to the second layer 12. Therefore, also with the configuration shown in FIG. 6, the first layer 11 is easily peeled off from the second layer 12.

The adhesive suppressing layer 115 does not overlap the boundary between the first region 11a and the second region 11b. Specifically, the end of the adhesive suppressing layer 115 is separated from the boundary between the first region 11a and the second region 11b by 1.5 mm or more. In other words, the distance D between the end of the adhesive suppressing layer 115 and the boundary between the first region 11a and the second region 11b shown in FIG. 6 is 1.5 mm or more.

In FIG. 6, in order to clearly show the structure of each layer, a gap exists between the first adhesive layer 112 and the second base material 121 in a region where the first layer 11 does not include the adhesive suppressing layer 115. However, in reality, the first adhesive layer 112 and the second base material 121 are bonded to each other in areas where the first layer 11 does not include the adhesive suppressing layer 115.

Therefore, the adhesive strength of the first layer 11 to the second layer 12 does not decrease near the boundary between the first region 11a and the second region 11b. Therefore, in a state where the first layer 11 is not peeled off from the second layer 12, the fragrance component can be prevented from being released from the opening 21 covered by the first layer 11.

In the example shown in FIG. 6, the first layer 11 also includes an adhesive suppressing layer 115 in a region corresponding to the opening 21. In the example shown in FIG. In the example shown in FIG. 6, when the first region 11a or the second region 11b is peeled off from the second layer 12, the adhesive suppressing layer 115 formed in the region is also peeled off from the second layer 12. Therefore, even if the first layer 11 includes the adhesive suppressing layer 115, the sustained release properties of the second layer 12 in a state where the first layer 11 is peeled off from the second layer 12 are not affected.

FIG. 7 is a cross-sectional view showing a third example of the configuration of the label 10 around the opening 21. FIG. 7 shows a cross-sectional view around the opening 21 covered by the second region 11b. FIG. 7 also shows the container 20. The aspect ratio in FIG. 7 does not match the aspect ratio in the actual label 10. Further, the thickness of each member in FIG. 7 does not correspond to the actual thickness of each member.

In the example shown in FIG. 7, the second layer 12 includes a silicone layer 123, similar to the example shown in FIG. On the other hand, in the example shown in FIG. 7, the second layer 12 does not include the silicone mesh 124, unlike the example shown in FIG.

In the example shown in FIG. 7, the first layer 11 has a so-called partial glue structure. Specifically, the first layer 11 does not have the first adhesive layer 112 in the region corresponding to the opening 21 . Therefore, even if the second layer 12 does not include either the silicone layer 123 or the silicone mesh 124 in the region corresponding to the opening 21, the second region 11b is easily peeled off from the second layer 12.

In FIG. 7, in order to clearly show the structure of each layer, a gap exists between the first layer 11 and the second layer 12 in the area corresponding to the opening 21 and in the vicinity thereof. However, in reality, the first layer 11 and the second layer 12 are in contact with each other.

In any of the examples shown in FIGS. 5 to 7, the boundary between the first region 11a and the second region 11b is preferably separated from the edge of the opening 21 by 1.5 mm or more. Thereby, sufficient adhesive strength can be obtained between the first layer 11 and the second layer 12 around the opening 21. Therefore, in a state where the first layer 11 is not peeled off from the second layer 12, the fragrance component can be prevented from being released from the opening 21 covered by the first layer 11.

[Embodiment 2]
Other embodiments of the invention will be described below. For convenience of explanation, members having the same functions as the members described in the above embodiment are given the same reference numerals, and the description thereof will not be repeated.

FIG. 8 is a plan view of the gas generation unit 1A according to the second embodiment. As shown in FIG. 8, the gas generation unit 1A includes a label 10A instead of the label 10. The label 10A includes a first layer 11A instead of the first layer 11. The first layer 11A includes a third region 11c in addition to the first region 11a and the second region 11b. The third region 11c is a region of the first layer 11A that is not peeled off from the second layer 12 (see FIG. 1, etc.) when the gas generation unit 1A is used.

In FIG. 8, the first region 11a and the plurality of second regions 11b each cover at least one opening 21 (see FIG. 4, etc.). The third region 11c does not cover the opening 21. The user of the gas generation unit 1A peels off the first region 11a from the second layer 12 when starting to use the gas generation unit 1A. Further, if the user of the gas generation unit 1A wants to intensify the fragrance emitted by the gas generation unit 1A, the user further peels off one or more second regions 11b from the second layer 12.

In FIG. 8, the area of the first region 11a is larger than the area of the second region 11b. Further, the first region 11a is located at the center of the first layer 11A, and the second region 11b is located around the first region 11a. However, the area size relationship and positional relationship in plan view of the first region 11a and the second region 11b are not limited to those shown in FIG. 8.

Further, in FIG. 8, a part of the mark M indicating the peeling direction of the second region 11b indicates the same peeling direction as the mark M indicating the peeling direction of the first region 11a. However, in FIG. 8, the first region 11a and the second region 11b are not in direct contact. Therefore, when the first region 11a is peeled off, the second region 11b is not also peeled off. In this way, the peeling direction of the first region 11a and the peeling direction of the second region 11b do not necessarily have to be different.

[Embodiment 3]
In any of the embodiments described above, the first layer 11 had the first region 11a and the second region 11b. However, in the label 10 according to the present invention, the first layer 11 does not need to have the first region 11a and the second region 11b. That is, the label 10 according to the present invention includes a first layer 11 and a second layer 12, the first layer 11 is peelable from the second layer 12, and the second base material 121 is made of white polyethylene. Bye.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. are also included within the technical scope of the present invention.

1, 1A Gas generation unit 10, 10A Label 11, 11A 1st layer 111 1st base material 11a 1st region 11b 2nd region 112 1st adhesive layer 115 Glue suppressing layer 12 2nd layer 121 2nd base material 122 2nd Adhesive layer 20 Container 21 Opening 30 Gas generating agent

Claims (5)

A first layer that blocks fragrance components,
comprising a second layer overlaid with the first layer that transmits the fragrance component;
It is possible to peel the first layer from the second layer,
The second layer is
a second base material;
a second adhesive layer superimposed on the second base material,
The second base material is a label containing a white olefin resin. The first layer has, in the thickness direction,
a first base material;
a first adhesive layer that adheres the first base material to the second layer, superimposed on the first base material,
The first layer has a first region and a second region different from the first region in plan view,
The first layer is cut at the boundary between the first region and the second region,
The label according to claim 1, wherein the second layer is continuous in a region corresponding to a boundary between the first region and the second region. a direction in which the first region is peeled from the second layer;
The label according to claim 2, wherein directions in which the second region is peeled from the second layer are different from each other. 3. The label according to claim 2, wherein the first layer further includes an adhesive suppressing layer that is superimposed on a part of the first adhesive layer and reduces adhesiveness of the first adhesive layer to the second layer. a gas generating agent;
a container containing the gas generating agent;
A gas generation unit comprising the label according to claim 1.

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