JP7275637B2 - Spout plugs and packaging containers - Google Patents

Description

TECHNICAL FIELD The present invention relates to a spout plug and a packaging container using the same.

A spout plug including a cylindrical spout, a partition provided at one end of the spout, and a pull ring attached to the partition for removing the partition during use, and a packaging container having the spout attached to the spout hole of the container body It has been known. In such a spout plug, the spout is folded toward the inside of the container body and accommodated so that the exposed spout plug and the attached cap do not get in the way when the packaging container is distributed. is made possible (see Patent Document 1).

The lid assembly (spout plug) of U.S. Pat. No. 5,900,003 includes a molded plastic spout that attaches to the opening of the container body and a plastic overcap that threads onto the outer periphery of the molded plastic lid. In order to open the lid assembly, a pair of hinged handles formed on the outer periphery of the upper surface of the overcap is raised upward, the raised hinged handles are grasped, and folded inwardly of the container body. Pull the molded plastic lid out of the container body. The overcap can then be removed from the molded plastic lid, and a pull ring formed in the molded plastic lid can be grasped and pulled up to remove and open the diaphragm.

Japanese Patent Publication No. 59-187557

Since such a spout plug includes an overcap that screws onto a molded plastic lid, the pull ring is formed with a relatively small outer diameter and a thin profile to fit inside the overcap. Therefore, there is a problem that it becomes difficult to grasp or pull up the tension ring with fingers or the like.

In addition, when the packaging container is used as a refillable container, there is no need to re-plug (re-seal) the container with an over-cap, and the over-cap causes an increase in waste.

The present invention has been made in view of such problems, and an object thereof is to provide a spout plug that can be easily opened with a pull ring and that can suppress an increase in waste, and a packaging container using the same. and

One aspect of the present invention for solving the above problems is a cylindrical side wall, a partition wall that closes an edge at one end of the side wall, a partition wall connected to the partition wall, and at least a portion of the outer edge extending in the height direction of the side wall. A pull ring provided outside the side wall as viewed from above , supported above the partition wall, and having a space on the inner circumference , a flange portion, and the flange portion connecting the other end of the side wall and the flange portion A spout plug integrally formed with a cylindrical connecting part that can be deformed between a state protruding from one side of a part and a state protruding from the other side, wherein the side wall and the pull ring are a first state in which the connecting portion is housed in a space surrounded by the connecting portion projecting to the other side of the flange portion; The spout plug is deformable between a second state in which it protrudes on one side of the portion and is exposed.

Another aspect of the present invention includes a self-supporting container body formed using a flexible packaging material and the spout plug described above, wherein the container body has a bottom surface that serves as a bottom when self-supporting and faces the bottom surface. and two side surfaces, the top surface is provided with a spout plug, and a portion of the flexible packaging material forming one of the side surfaces is folded back to allow the top surface to become one of the side surfaces when the packaging material is self-supporting. It is a packaging container that can be stacked.

ADVANTAGE OF THE INVENTION According to this invention, the spout plug which can be easily opened by a pull ring and can suppress the increase of waste, and a packaging container using the same can be provided.

1 is a perspective view of a spout plug (before opening) according to the first embodiment of the present invention; FIG. 1 is a cross-sectional view of a spout plug (before opening) according to the first embodiment of the present invention; FIG. 1 is a perspective view of a spout plug (after opening) according to the first embodiment of the present invention; FIG. A perspective view of a spout plug (before opening) according to a second embodiment of the present invention. Sectional view of the spout plug (before opening) according to the second embodiment of the present invention Sectional view of the spout plug (before opening) according to the third embodiment of the present invention The perspective view of the packaging container based on the 4th Embodiment of this invention The exploded perspective view of the packaging container which concerns on the 4th Embodiment of this invention. A diagram illustrating an example of a refilling method using the packaging container according to the fourth embodiment of the present invention. The perspective view of the packaging container based on the 5th Embodiment of this invention The perspective view of the packaging container which concerns on the modification of this invention The figure explaining the usage method of the packaging container which concerns on the modification of this invention. The perspective view of the packaging container which concerns on the modification of this invention

A spout plug and a packaging container according to an embodiment of the present invention will be described with reference to the drawings. In addition, in each embodiment, the same reference numerals are given to the same or corresponding configurations, and description thereof will be omitted as appropriate.

[Spout plug]
<First embodiment>
FIG. 1 shows a perspective view of the outlet plug 100 according to the first embodiment of the present invention before opening, FIG. 2 shows a cross-sectional view of the outlet plug 100 before opening, and FIG. A perspective view of the spout plug 100 after opening is shown. 1 shows the spout plug 100 in a first state, which will be described later, and the lower figures of FIG. 1 and FIG. 2 show the spout plug 100 in a second state.

As shown in FIGS. 1 to 3, the spout plug 100 includes a side wall 110, a partition wall 120, a pull ring 130, a flange portion 140, and a connecting portion 150, which are integrally molded. The spout plug 100 is attached to the opening of the container body via a flange portion 140, and the contents of the container body can be poured out by opening the plug by a method described later.

The side wall 110 has a cylindrical shape, and the edge at one end is closed by a partition wall 120 to seal the container body. As an example, as shown in FIG. 2, the spout plug 100 is provided with a thin portion 121 formed to have a small thickness along the edge of the partition wall 120 in the circumferential direction to facilitate opening of the plug. The thin portion 121 may be intermittently provided in the circumferential direction.

The pull ring 130 is provided to project and expose the side wall 110 to one side of the flange portion 140 and to separate the partition wall 120 from the spout plug 100 to open the plug. The pull ring 130 is formed in an annular shape, and at least a part of the outer edge is connected to the partition wall 120 so as to be positioned outside the side wall 110 when viewed from the height direction of the side wall 110 . In spout plug 100, as shown in FIG. 1, annular pull ring 130 having an outer diameter larger than the outer circumference of side wall 110 is connected to partition wall 120 via a support portion (connection portion).

Connecting portion 150 has a tubular shape and connects the other end of side wall 110 and flange portion 140 . As shown in FIG. 1, the connecting portion 150 can be deformed between a state of protruding from one surface (front surface 141a) of the flange portion 140 and a state of protruding from the other surface (back surface 141b) of the flange portion 140. .

The outlet plug 100 can be deformed between a first state (upper diagram in FIG. 1) and a second state (lower diagram in FIG. 1) as the connecting portion 150 is deformed. More specifically, in the first state, spout plug 100 is in a state in which connecting portion 150 protrudes from back surface 141 b side, and side wall 110 and pull ring 130 are housed in a space surrounded by connecting portion 150 . In the second state, the spout plug 100 is in a state in which the connecting portion 150 protrudes from the surface 141a side and the side wall 110 protrudes from the flange portion 140 toward the surface 141a side. Although the details will be described later, the spout plug 100 is attached so that the connecting portion 150 is positioned inside the container body in the first state.

Thus, in the first state, the spout plug 100 is housed in the space where the side wall 110 and the pull ring 130 are surrounded by the connecting portion 150, so that the spout plug 100 can be removed when the packaging container is distributed. can be prevented from being exposed and becoming a hindrance.

(How to open)
Next, a method for opening the spout plug 100 will be described.

First, the pull ring 130 of the spout plug 100 in the first state is grasped, and as indicated by the arrow in the upper diagram of FIG. By pulling up toward the connecting portion 150, the connecting portion 150 is deformed so as to be reversed toward the surface 141a, and enters the second state shown in the lower diagram of FIG. Up to this point, the packaging container with spout plug 100 has been kept sealed.

Next, the pull ring 130 of the spout plug 100 in the second state is further pulled up. When the force pulling up pull ring 130 exceeds a predetermined magnitude, breakage occurs between partition wall 120 connected to pull ring 130 and side wall 110 . By continuing to pull it up further, breakage progresses, and finally, at least part of the partition wall 120 separates from the side wall 110, and the spout plug 100 is opened as shown in FIG.

In this way, in spout plug 100 , pull ring 130 is formed such that at least a portion of the outer edge of pull ring 130 is positioned outside side wall 110 when viewed from the height direction of side wall 110 . For this reason, the pull ring 130 can be formed large, and even in the first state, the pull ring 130 can be easily grasped with fingers and the plug can be easily opened. Further, by providing the partition wall 120 with the thin portion 121, the plug can be opened more easily.

Furthermore, since pulling up the spout plug 100 and removing the partition wall 120 can be performed with one pull ring 130, a jig or the like used for pulling up the spout plug 100 is not required, and an increase in waste can be suppressed. .

The material of the spout plug 100 is not particularly limited as long as it has sufficient strength as a spout plug and allows easy deformation of the connecting portion 150 and separation of the partition wall 120. One example is polyethylene (low-density polyethylene). polyethylene, linear low-density polyethylene) and the like can be preferably used.

<Second embodiment>
FIG. 4 shows a perspective view of the outlet plug 200 according to the second embodiment of the present invention before opening, and FIG. 5 shows a cross-sectional view of the outlet plug 200 before opening. 4 shows the spout plug 200 in the first state, and FIG. 4 and FIG. 5 show the spout plug 200 in the second state.

The difference between outlet plug 100 and outlet plug 200 is the shape of pull ring 230 . Specifically, as shown in FIGS. 4 and 5 , the pull ring 230 has an annular shape extending in the height direction of the side wall 110 , and the partition wall 120 is pulled by a support portion extending toward the side opposite to the side wall 110 . It is connected to the.

Similarly to the pull ring 130 , the pull ring 230 is also formed such that at least a part of the outer edge is positioned outside the side wall 110 when viewed from the height direction of the side wall 110 . Therefore, since the pull ring 230 can be formed large, the pull ring 230 can be easily grasped even in the first state, and the plug can be easily opened.

Further, as shown in FIGS. 4 and 5, the pull ring 230 is supported (positioned) above the partition wall 120 to form a space on the inner circumference. As a result, it becomes easier to insert a finger into the inner circumference of the pull ring 230 of the spout plug 200 in the first state, so that the pull ring 230 can be more easily grasped and the plug can be opened more easily.

<Third Embodiment>
FIG. 6 shows a cross-sectional view of a spout plug 300 according to a third embodiment of the present invention prior to opening. 6 shows spout plug 300 in the second state. In addition, FIG. 6 shows, as an enlarged view of the A portion, a partially enlarged view of the periphery of a thin portion 321, which will be described later.

The difference between the spout plug 100 and the spout plug 300 is the formation position of the thin portion 321 and the presence or absence of the fitting portion 360 . Specifically, as shown in FIG. 6, the thin portion 321 is formed by thinning the upper portion of the side wall 110 in the circumferential direction. A fitting portion 360 is formed on the outer and inner peripheral surfaces of the side wall 110 and is composed of a pair of uneven portions formed so as to sandwich the thin portion 321 in the height direction of the side wall 110 . By providing the thin portion 321 and the fitting portion 360, the spout plug 300 can be opened and resealed without providing a separate cap as described below.

In the spout plug 300, when the pull ring 130 is further pulled up in the second state, the thin portion 321 is broken, and the partition wall 120 and the portion of the side wall 110 on the side of the partition wall 120 are separated. Thereby, the spout plug 300 can be opened. In the unplugged spout plug 300, the side wall 110 on the side of the partition wall 120 is fitted into the side wall 110 on the side of the connecting portion 150 with the detached portion of the side wall 110, that is, the thin portion 321 interposed therebetween. The projections and depressions fit together to reseal the spout plug 300 .

Thus, according to the spout plug 300, in addition to being able to be easily opened, it can be resealed after being opened.

Note that the thin portion 321 may be intermittently formed in the circumferential direction.

The shape of the fitting portion 360 of the spout plug 300 is not particularly limited as long as it is a shape that can be fitted by fitting the detached portion of the side wall 110 into the non-detached portion, as shown in FIG. In addition, uneven portions may be formed on the inner and outer peripheral surfaces of the side walls 110 in the circumferential direction, or may be intermittently formed in the circumferential direction.

In addition, the method of fixing the detached portion of the side wall 110 after resealing is not limited to fitting. may be screwed together.

[Packaging container]
Next, the packaging container having the spout plugs 100, 200, 300 attached to the container body will be described. Below, as an example, a packaging container in which the spout plug 100 according to the first embodiment is attached to a self-supporting flexible packaging bag (packaging bag made of a single-layer or multi-layer soft film or the like) generally called a standing pouch. However, the shape of the container body is not particularly limited, and it is possible to use it by attaching it to known packaging containers such as brick type containers and gable top type containers in addition to self-supporting flexible packaging bags.

<Fourth Embodiment>
FIG. 7 shows a perspective view of a packaging container 500 according to a fourth embodiment of the present invention, and FIG. 8 shows an exploded perspective view of the packaging container 500. As shown in FIG. In addition, FIG. 7 shows a state in which the packaging container 500 stands on its own. Specifically, a state in which a portion of the side surface 513 is folded back (upper diagram in FIG. 7) and a state in which a portion of the side surface 513 is not folded back (lower diagram in FIG. 7) are shown. In addition, in the lower diagram of FIG. 7 , a part of the configuration is shown transparently in order to clarify the mounting state of the spout plug 100 .

The packaging container 500 is composed of a self-supporting container body 510 formed using a flexible packaging material (a flexible material such as film, paper, or a composite material thereof) and a spout plug 100 . The container main body 510 has a bottom surface 511 that becomes a bottom when it stands on its own, a top surface 512 that faces the bottom surface, and two side surfaces 513 and 514 . The spout plug 100 is attached to an opening formed in the top surface 512 . As shown in FIG. 7, spout plug 100 is attached such that connecting portion 150 is located inside container body 510 in the first state.

As an example, the container body 510 is formed using three flexible packaging materials that form a bottom surface 511 and two side surfaces 513 and 514, as shown in FIG. The container body 510 has a top surface 512 formed by folding back a portion of the flexible packaging material forming the side surface 513 along predetermined folding portions 513a and 513b, and a bottom surface 511 folded in half to form two side surfaces 513 and 514. by inserting between and sealing the peripheral sealing area. The container main body 510 formed in this manner is in a self-supporting state, and the flexible packaging material forming the side surface 513 is folded at predetermined folding portions 513a and 513b to form the top surface 512 as shown in the upper diagram of FIG. A portion can overlap the sides 513 and can be made less bulky.

(Refill method)
Next, an example of a method of repacking the contents in the container body 510 into another packaging container 900 using the packaging container 500 will be described. FIG. 9 shows a diagram for explaining an example of a refilling method using the packaging container 500. As shown in FIG. In order to clarify the refilling state of the spout plug 100, FIG. 9 shows a part of the configuration and an enlarged view of the B section of the main part.

First, the outlet plug 100 is opened by the method described above. The unplugged spout plug 100 is in the second state in which the side wall 110 protrudes outward from the container body 510 and is exposed.

Next, as shown in the enlarged view of FIG. 9, the opening 910 of the packaging container 900 to be refilled is inserted so as to cover at least part of the side wall 110 of the outlet plug 100 in the second state. After that, as shown in FIG. 9, the packaging container 500 and the packaging container 900 to be refilled are turned upside down while the spout plug 100 is inserted, so that the contents of the packaging container 500 are poured through the spout plug 100 into the refill container. Can be refilled to 900. Since the top surface 512 can be formed flat, if the opening 910 of the packaging container 900 to be refilled is flat, the packaging container 500 can be placed above the packaging container 900 as shown in FIG. can be loaded.

<Fifth Embodiment>
FIG. 10 shows a perspective view of a packaging container 600 according to a fifth embodiment of the invention. In addition, FIG. 10 shows a state in which the packaging container 600 stands on its own. In addition, in FIG. 10 , a part of the configuration is transparently shown in order to clarify the mounting state of the spout plug 100 .

The difference between the packaging container 500 and the packaging container 600 is the presence or absence of the top surface 512 and the attachment position of the spout plug 100 . Specifically, as shown in FIG. 10, a container body 610 used in a packaging container 600 has a bottom surface 611 that serves as a bottom when it stands on its own, and two side surfaces 613 and 614. The outlet plug 100 has a bottom surface 611 The connection part 150 is attached to the opening formed in the container body 610 so as to be positioned inside the container body 610 in the first state described above.

As described above, according to the packaging containers 500 and 600, the side wall 110 of the spout plug 100 that protrudes and is exposed to the outside of the container body 510 and 610 can be inserted into the opening 910 of the packaging container 900 to be refilled. Therefore, the contents can be easily refilled.

In addition, in the packaging containers 500 and 600, the container bodies 510 and 610 in a self-supporting state can be opened wide above and filled with contents. Therefore, the filling can be performed more efficiently than when the filling is performed via the spout plug.

Moreover, since the top surface 512 and the bottom surface 611 provided with the spout plug 100 are formed flat, the contents are less likely to stay on the inner surface of the container body 510 when the contents are refilled. Therefore, it is possible to efficiently refill the contents.

In addition, since the packaging containers 500 and 600 can be manufactured using three flexible packaging materials, the manufacturing cost can be reduced compared to a packaging container formed into a bottle shape using four flexible packaging materials. It is possible to suppress and improve productivity. In addition, unlike a packaging container formed into a bottle shape using four flexible packaging materials, the cross-section of the body of the container body is circular and the width of the container is not narrowed, so that it is conspicuous when displayed in a shop.

(Modification)
A film may be peelably attached to the packaging containers 500 and 600 so as to cover at least the spout plug 100 in the first state. FIG. 11 shows a perspective view of a packaging container 601 according to a modified example in which a film 620 is attached to the packaging container 600 according to the sixth embodiment, and FIG. 12 shows a diagram explaining how to use the packaging container 601. 11 and 12 show the packaging container 601 with the bottom surface 611 directed upward for clarity of shape.

As shown in FIG. 11, the packaging container 601 has a peelable film 620 attached thereto so as to cover at least the spout plug 100 in the first state. When using the packaging container 601, as shown in FIG. 12, it can be used in the same manner as the packaging containers 500 and 600 by peeling off the film 620 from the container body 610. FIG.

By attaching the film 620, it is possible to prevent the spout plug 100 from being soiled or mischievous with dirt, dust, or the like. In addition, by sterilizing spout plug 100 by sterilization before film 620 is attached, spout plug 100 can be kept sterile until film 620 is peeled off. Furthermore, various functional films may be used as the film 620 . For example, by using a film having gas barrier properties as the film 620 , it is possible to suppress deterioration of the contents caused by moisture, oxygen, etc. passing through the spout plug 100 and entering the container main body 610 .

The method of detachably attaching the film 620 to the container body 610 is not particularly limited, but for example, a method of attaching the film 620 using an easy peeling varnish, a hot melt adhesive, or the like, or cohesive peeling and delamination as the film 620 are possible. There is a method using a thin film.

In the above description, a packaging container using a self-supporting flexible packaging bag as the container body has been described as an example, but the shape of the container body is not particularly limited. It can be used by being attached to a well-known packaging container such as a container or a gable top type container. FIG. 13 shows a perspective view of a packaging container 700 using a brick-type container as a container body 710 as an example.

INDUSTRIAL APPLICABILITY The present invention is useful for a packaging container composed of a container body and an outlet plug.

100, 200, 300 spout plug 110 side wall 120 partition wall 130, 230 pull ring 140 flange portion 150 connecting portion 360 fitting portion 500, 600, 601, 700 packaging container 510, 610, 710 container body 511, 611 bottom surface 512 top surface 513 , 514, 613, 614 side 620 film 900 packaging container to be refilled 910 opening

Claims (8)

a cylindrical side wall;
a partition closing the edge of one end of the side wall;
connected to the partition wall, at least a part of the outer edge of which is provided so as to be positioned outside the side wall when viewed from the height direction of the side wall , supported above the partition wall, and having a space on the inner periphery thereof; a pull ring having
a flange portion;
a cylindrical connecting portion that connects the other end of the side wall and the flange portion and is deformable between a state of protruding from one side of the flange portion and a state of protruding from the other side of the flange portion; A spout plug integrally molded,
a first state in which the side wall and the pull ring are accommodated in a space surrounded by the connecting portion protruding toward the other side of the flange portion;
By pulling up the pull ring in the first state, the connecting portion is deformed, and the side wall is deformable between a second state in which the side wall protrudes and is exposed on the one surface side of the flange portion.
Spout plug. A thin portion is provided on the partition wall,
2. The spout plug according to claim 1, wherein at least a part of said partition is detached from said side wall to be opened by further pulling up said pull ring in said second state. a thinned portion is provided on the side wall;
By further pulling up the pull ring in the second state, the portion of the side wall closer to the one end than the thin portion is detached and unplugged,
2. The spout plug of claim 1, resealable by a detached portion of the sidewall. a self-supporting container body formed using a flexible packaging material;
and a spout plug according to any one of claims 1 to 3,
The container body is
comprising a bottom surface that serves as a bottom when it stands on its own, a top surface facing the bottom surface, and two side surfaces, the top surface being provided with the spout plug,
A part of the flexible packaging material forming one of the side surfaces can be folded back so that the top surface overlaps one of the side surfaces when the flexible packaging material is self-supporting.
packaging container. a self-supporting container body formed using a flexible packaging material;
and the spout plug according to any one of claims 1 to 3,
The container body is
It comprises a bottom surface that becomes a bottom when it stands on its own, and two side surfaces, and the spout plug is provided on the bottom surface.
packaging container. a container body formed by bending a sheet material into a box shape;
and the spout plug according to any one of claims 1 to 3,
packaging container. The spout plug is
attached to the container body so that the connecting portion is located on the inner side of the container body in the first state;
further comprising a film releasably affixed so as to cover at least the spout plug in the first state;
The packaging container according to any one of claims 4-6. The film has gas barrier properties,
The packaging container according to claim 7.

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