JP2020172319A - Spout plug - Google Patents

Abstract

To provide a spout plug which can be easily opened.SOLUTION: A spout plug includes: a faucet body having a cylindrical pipe part and a flange provided to extend outward at least from one end of the pipe part; a cap having a cylindrical side wall, a top surface portion covering one end of the side wall and a tubular portion extending from the top surface portion into the interior of the side wall, and capable of being attached to the other end of the tubular portion of the faucet body; and a film glued to at least a region around the flange on a surface of the flange opposite to the pipe part and at least a portion of a region at the end of the tubular portion opposite to the top surface portion.SELECTED DRAWING: Figure 1

Description

The present invention relates to a spout plug provided at a pouring position of a packaging container.

As a packaging container for fluid contents such as liquids, powders, and granules, those provided with a resin spout / outlet plug are widely used. The spout plug includes a spout body including a cylindrical cylinder portion and a partition wall that closes the inside thereof, and a cap that covers the spout body. The partition wall is provided with a circular thin wall portion and a pull ring. By removing the cap and pulling the pull ring, the partition wall breaks along the thin wall portion, so that the cap can be opened. In addition, it can be resealed by covering it with a cap (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2000-296856

However, since it is necessary to remove the pull ring after opening the spout plug and dispose of it, there is room for improvement in convenience.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a spout plug that can be easily opened.

One aspect of the present invention for solving the above problems is a cylindrical tubular portion, a spout body having a flange provided so as to extend at least outward from one end of the tubular portion, and a cylindrical plug body. A cap that has a side wall, a top surface portion that covers one end of the side wall, and a columnar portion that extends from the top surface portion to the inside of the side wall, and can be attached over the other end of the cylinder portion of the spout body, and a flange cylinder. The tubular portion includes a region that at least goes around the flange on the surface opposite to the portion and a film that is adhered to at least a part of the region on the end portion opposite to the top surface portion of the columnar portion. A spout plug with one end blocked.

According to the present invention, it is possible to provide a spout plug that can be easily opened.

Cross-sectional view of the spout plug according to the first embodiment of the present invention Cross-sectional view of the spout plug according to the second embodiment of the present invention. Cross-sectional view of the spout plug according to the third embodiment of the present invention. Cross-sectional view of the spout plug at the time of re-plugging according to the third embodiment of the present invention. Cross-sectional view of the spout plug according to the modified example Top view of the film of the spout plug according to the modified example

The spout plug according to the embodiment of the present invention will be described with reference to the drawings. The corresponding configurations in each embodiment are designated by the same reference numerals and the description thereof will be omitted as appropriate.

[First Embodiment]
FIG. 1 shows a cross-sectional view of the spout plug 100 according to the first embodiment. The spout plug 100 includes a spout main body 10, a cap 20, and a film 30. The spout plug 100 is closed by covering the spout body 10 with the cap 20, and is opened by removing the cap 20 from the spout body 10. FIG. 1A is a cross-sectional view of the spout plug 100 in a closed state, and FIG. 1B is a process of removing the cap 20 from the spout body 10 and immediately before opening. It is sectional drawing of the spout plug 100 in a state. The spout plug 100 is typically used by being attached to a packaging container (not shown) having an opening.

The spout body 10 is a member attached to the opening of the packaging container. The spout body 10 has a cylindrical tubular portion 11 and a flange 13 extending at least outward from one end of the tubular portion 11. As an example, the tubular portion 11 includes an external screw 14 for screwing and attaching the cap 20 to the outer peripheral surface. The spout body 10 can be molded using, for example, polyethylene, polypropylene, or the like.

The cap 20 is a member for closing the cylinder portion 11 and closing the spout plug 100 by covering the other end of the cylinder portion 11 of the spout body 10 (the end opposite to the flange 13). Is. The cap 20 has a cylindrical side wall 21, a top surface portion 22 that covers one end of the side wall 21, and a columnar portion 23 that extends inward from the top surface portion 22 to the inside of the side wall 21. As an example, the side wall 21 is provided with an internal screw 24 that can be screwed to the external screw 14 of the spout body 10 on the inner peripheral surface. The cap 20 can be molded using, for example, polyethylene, polypropylene, or the like. As shown in FIG. 1, the columnar portion 23 may or may not have a space inside. In FIG. 1, the columnar portion 23 is formed to have a length at which the tip is located on a plane including a surface of the flange 13 opposite to the tubular portion 11, but the length of the columnar portion 23 from the top surface portion 22. The dimensions are not limited as long as the film 30 can be adhered. One end of the cap 20 is covered by the top surface portion 22 between the side wall 21 and the columnar portion 23, and the cap 20 is formed so as to be in contact with the inner peripheral surface on the other end side of the tubular portion 11 when attached to the spout main body 10. An inner ring 25 may be further provided. By providing the inner ring 25, it is possible to improve the sealing property when the cap 20 closes the tubular portion 11.

The film 30 is a member for closing one end of the tubular portion 11 of the spout plug 100 in the closed state. The film 30 has a region A that goes around the flange 13 on the surface of the flange 13 opposite to the tubular portion 11, and at least a part of the region B at the end of the columnar portion 23 on the side opposite to the top surface portion 22. It is glued on both sides. In the spout plug 100, one end of the tubular portion 11 can be sealed and closed by adhering the film 30 in the regions A and B.

The film 30 includes a weakening portion 31 that goes around the columnar portion 23 in an annular region between the columnar portion 23 and the flange 13 in a plan view. The weakened portion 31 is a portion whose strength is reduced by thinning the film 30 in a circumferential shape in order to break a part of the film 30 when the cap is opened. The strength of the weakened portion 31 can be reduced in a circumferential shape, and its form is not limited unless the contents leak out or the gas barrier property is significantly reduced. The weakened portion 31 can be realized, for example, by a half cut formed by reducing the wall thickness of the film 30 in a circumferential shape, a perforation formed by arranging through holes in a circumferential shape, or the like. By providing the weakening portion 31, stress concentration is generated between the through holes adjacent to the half cut and the perforation by the force applied to the cap 20 at the time of opening the cap, which will be described later, and the fracture can be performed with a relatively small force. It can be opened. For the method of half-cutting the film 30 and forming the perforations, for example, laser processing, processing with a cutting tool, or the like can be used.

The method of adhering the film 30 to the spout body 10 and the cap 20 is not limited. For example, the film 30 may be provided with a sealant layer, a heat seal varnish layer, or the like for heat sealing (heat welding), or an adhesive may be applied. They may be used for adhesion or a combination of these.

The material of the film 30 is not particularly limited as long as it can be adhered to the spout body 10 and the cap 20 to seal and close one end of the tubular portion 11. As an example, a single-layer film or a laminated film containing an adhesive layer made of a sealant or an adhesive made of polyethylene, polypropylene or the like that can be welded to the spout body 10 and the cap 20 can be used. Further, the weakened portion 31 may be formed by laminating layers containing a material such as polyethylene terephthalate, which has a lower elongation rate than polyethylene, polypropylene, or the like. By forming the weakened portion 31 in a layer containing a material having a low elongation rate, it is possible to prevent leakage of the contents and a large decrease in gas barrier property in another layer, and at the time of opening, a material having a low elongation rate can be used. Since the above-mentioned stress concentration is generated in the containing layer and the film 30 can be quickly broken without stretching, the cap can be easily opened. Further, a barrier layer may be laminated in order to impart high gas barrier properties. As the barrier layer, an aluminum foil, a resin film containing an EVOH resin or the like, a film in which aluminum, silica, alumina or the like is vapor-deposited on a base film, a polyethylene terephthalate film having a gas barrier property, or the like can be used.

(About opening)
When opening the cap, the cap 20 can be removed from the spout body 10 by moving the cap 20 away from the film 30 as shown by an arrow in FIG. 1 (b). As the cap 20 moves, the portion adhered to the region B of the film 30 is pulled in the moving direction of the cap 20. When the moving distance of the cap 20 exceeds a predetermined distance, the film 30 breaks along the weakened portion 31, and as shown in FIG. 1B, the film 30 adheres to the portion adhered to the region A and the region B. Separated from the separated part. As a result, an opening is formed in the film 30 and one end of the tubular portion 11 is opened. After that, the cap 20 can be completely removed from the tubular portion 11 and the contents of the packaging container can be taken out through the tubular portion 11 of the spout main body 10.

As described above, according to the spout plug 100, the opening of the tubular portion 11 is completed when the cap 20 is removed, and a part of the separated film 30 remains in the columnar portion 23, so that the cap is opened with a pull ring. It is not necessary to remove the partition wall separately and dispose of it as in the case of, and the cap can be easily opened.

Further, when the cap 20 once opened is attached to the spout body 10 again and re-plugged, a part of the outer edge of the film 30 adhered to the region B is inside the opening of the film 30 adhered to the region A. To position. As a result, the opening formed in the film 30 is closed, so that the airtightness after re-plugging can be improved.

Further, since it is not necessary to provide a pull ring on the spout main body 10, the structure is simplified, and as a result, the design of the mold is facilitated, and the choice of materials that can be used when injection molding is used has increased.

Further, since the spout body 10 and the film 30 are made of separate members, the choice of materials that can be used for the member (film 30) that closes the spout body 10 has increased as compared with the method of opening the spout with a pull ring. Further, as a result, the material of the film 30 can be selected according to the contents of the packaging container using the spout main body 10, so that the range of application of the spout main body 10 can be expanded.

Further, since the cap 20 is easy to pinch and apply torque, it is possible to open the cap 20 with a low load by attaching the cap 20 and the spout body 10 by screwing, as compared with pulling the pull ring to break the partition wall. The burden on the user can be kept small.

[Second Embodiment]
FIG. 2 shows a cross-sectional view of the spout plug 110 according to the second embodiment. The spout plug 110 includes a spout main body 10, a cap 20, and a film 40. FIG. 2A is a cross-sectional view of the spout plug 110 in a closed state, and FIG. 2B is a state in which the cap 20 is being removed from the spout body 10 and immediately before opening. It is sectional drawing of the spout plug 110 in. The difference between the spout plug 100 and the spout plug 110 is that the spout plug 110 includes a film 40 instead of the film 30. Hereinafter, the difference from the spout plug 100 will be mainly described.

The film 40 is a member for closing one end of the tubular portion 11 of the spout plug 110 in the closed state. As shown in FIG. 2A, the film 40 is formed in an annular shape (doughnut shape) having an opening 41. Further, the opening 41 is formed to have a size located inside the columnar portion 23 in a plan view of the spout plug 110 viewed from above the paper surface of FIG. 2A. The film 40 has both a region A that goes around the flange 13 on the surface of the flange 13 opposite to the tubular portion 11 and a region B'that goes around at least the opening 41 in the plan view of the columnar portion 23. It is glued. In the spout plug 110, one end of the tubular portion 11 can be sealed and closed by adhering the film 40 in the region A and the region B'.

(About opening)
When opening the cap, the cap 20 can be removed from the spout main body 10 by moving the cap 20 away from the film 40. As the cap 20 moves, the film 40 peels off from the region B'of the columnar portion 23, but the adhesion to the flange 13 in the region A is maintained. As a result, one end of the tubular portion 11 is opened by the opening 41. After that, the cap 20 can be completely removed from the tubular portion 11 and the contents of the packaging container can be taken out through the tubular portion 11 of the spout main body 10.

In the spout plug 110, the adhesive strength in the region B'is preferably lower than the adhesive strength in the region A in order to peel the film 40 from the region B'while maintaining the adhesion to the flange 13 in the region A. In order to make the adhesive strength of the region B'lower than the adhesive strength of the region A, for example, a method of designing the area of the region B'to be smaller than the region A as shown in FIG. 2 or an easy method for adhering the region B'. There is a method of using a material having easy peelability such as a peel film and a heat seal varnish.

As described above, according to the spout plug 110, the opening of the tubular portion 11 is completed when the cap 20 is removed, and the film 40 remains on the flange 13, so a separate partition wall is provided as in the method of opening with a pull ring. It does not need to be removed and discarded, and can be easily opened.

Further, when the cap 20 once opened is attached to the spout main body 10 again and re-plugged, the columnar portion 23 comes into contact with the outer periphery of the opening 41 of the film 40. As a result, the opening 41 formed in the film 40 is closed, so that the airtightness after re-plugging can be improved.

The material of the film 40 is not particularly limited as long as it can be adhered to the spout main body 10 and the cap 20 to seal and close one end of the tubular portion 11 as in the film 30. However, since the film 40 does not need to be broken at the time of opening, it is not always necessary to provide a layer made of a material having a low elongation at break.

[Third Embodiment]
FIG. 3 shows a cross-sectional view of the spout plug 120 according to the third embodiment. The spout plug 120 includes a spout main body 10a, a cap 20, and a film 50. FIG. 3A is a cross-sectional view of the spout plug 120 in a closed state, and FIG. 3B is a state in which the cap 20 is being removed from the spout body 10a and immediately before opening. It is sectional drawing of the spout plug 120 in. The difference between the spout plug 100 and the spout plug 120 is that the spout plug 120 includes the spout body 10a instead of the spout body 10 and the film 50 instead of the film 30. Hereinafter, the difference from the spout plug 100 will be mainly described.

The spout body 10a is a member attached to the opening of the packaging container. The spout body 10a has a cylindrical tubular portion 11 and a flange 13'extending at least outward from one end of the tubular portion 11. The difference between the spout body 10 and the spout body 10a is the shape of the flange 13'. As shown in FIG. 3, the flange 13'is further provided with a protrusion 13a in addition to the shape of the flange 13. The protrusion 13a is a state in which the spout plug 120 is closed from one end of the tubular portion 11 inward in addition to the shape of the flange 13 in a plan view of the spout plug 120 viewed from above the paper surface of FIG. Is formed so as to extend to a position where it does not overlap the columnar portion 23.

The film 50 is a member for closing one end of the tubular portion 11 of the spout plug 120 in the closed state. The film 50 has at least a part of the region A'that goes around the flange 13'on the surface of the protruding portion 13a opposite to the tubular portion 11 and the end portion of the columnar portion 23 opposite to the top surface portion 22. Adhered to region B. In the spout plug 120, one end of the tubular portion 11 can be sealed and closed by adhering the film 50 in the region A'.

(About opening)
When opening the cap, the cap 20 can be removed from the spout main body 10a by moving the cap 20 away from the film 50. The film 50 is peeled from the region A'as the cap 20 moves, but the adhesion to the columnar portion 23 in the region B is maintained. That is, the film 50 is peeled off from the flange 13' along with the cap 20. As a result, one end of the tubular portion 11 is opened. After that, the cap 20 can be completely removed from the tubular portion 11 and the contents of the packaging container can be taken out through the tubular portion 11 of the spout main body 10.

In the spout plug 120, the adhesive strength in the region A'is preferably lower than the adhesive strength in the region B in order to peel the film 50 from the region A'while maintaining the adhesion to the columnar portion 23 in the region B. .. In order to make the adhesive strength in the area A'lower than the adhesive strength in the area B, for example, a method of designing the area of the area A'to be smaller than the area B, an easy peel film for adhering the area A', and a heat seal. There is a method of using a material having easy peeling property such as varnish.

As described above, according to the spout plug 120, the opening of the tubular portion 11 is completed when the cap 20 is removed, and the film 50 remains in the columnar portion 23 of the cap 20, so that the cap 20 is opened by a pull ring. It is not necessary to remove the partition wall separately and dispose of it, and it is possible to open the cap easily.

Further, when the cap 20 once opened is attached to the spout main body 10a again and re-plugged, the outer edge of the film 50 comes into contact with the surface of the protruding portion 13b on the tubular portion 11 side, as shown in FIG. As a result, one end of the tubular portion 11 is closed, so that the airtightness after re-plugging can be improved.

The material of the film 50 is not particularly limited as long as it can be adhered to the spout body 10a and the cap 20 to seal and close one end of the tubular portion 11 as in the film 30. However, since the film 50 does not need to be broken at the time of opening, it is not always necessary to provide a layer made of a material having a low elongation at break.

(Modification example)
The spout body and the cap do not have to be separate, and may be connected by a hinge, for example. FIG. 5 shows a cross-sectional view of a spout plug 130 according to a modified example in which the spout main body 10 and the cap 20 are connected by a hinge 60. FIG. 5 (a) is a cross-sectional view of the spout plug 130 in the closed state, and FIG. 5 (b) is a cross-sectional view of the spout plug 130 in the opened state. In the spout plug 130, the inner ring 25 comes into contact with the inner peripheral surface of the tubular engaging wall 11a provided on the inner circumference of the tubular portion 11, as shown in FIG. 5A.

For the spout plug 130, a film 30'with a weakened portion 31'formed is used. FIG. 6 shows a plan view of the film 30'. As an example, as shown in FIG. 6A, the weakened portion 31'has a protruding portion 31'a formed of a curved line protruding outward at a position farthest from the hinge 60. In the spout plug 130, as shown in FIG. 5B, the cap 20 is opened by lifting the position farthest from the hinge 60. Therefore, the force applied to the cap 20 at the time of opening causes stress concentration to be generated in the protrusion 31'a provided at the position farthest from the hinge 60 of the weakening portion 31', and the weakening portion 31'breaks with a small force. Can be started. The protruding portion 31'a may have a shape in which the weakened portion 31'protrudes outward, and has, for example, a shape composed of two intersecting straight lines as shown in FIGS. 6 (b) and 6 (c). There may be. Further, the shape of the portion of the weakened portion 31'other than the protruding portion 31'a may be arcuate as shown in FIGS. 6A and 6C, or as shown in FIG. 6B. The shape may be a combination of an arc and a straight line.

Although detailed description will be omitted, the spout main body 10, 10a and the cap 20 can be connected to each other by using the hinge 60 in the spout plugs 110 and 120 as well as the spout plug 130.

The present invention is useful for packaging containers and the like.

10, 10a Mouth plug body 11 Cylinder part 11a Engagement wall 13, 13'Flange 13a Protruding part 14 External screw 20 Cap 21 Side wall 22 Top surface part 23 Column part 24 Internal thread 25 Inner ring 30, 40, 50 Film 31 Weakened part 41 Opening 60 Hinge 100, 110, 120, 130 Spout plug

Claims (5)

A spout body having a cylindrical cylinder and a flange provided so as to extend at least outward from one end of the cylinder.
It has a cylindrical side wall, a top surface portion that covers one end of the side wall, and a columnar portion that extends from the top surface portion to the inside of the side wall, and is attached by covering the other end of the tubular portion of the spout body. With possible caps
A film adhered to at least a region around the flange on the surface of the flange opposite to the tubular portion and at least a part of the end portion of the columnar portion on the side opposite to the top surface portion. Including and
A spout plug in which one end of the cylinder is blocked by the film. The film comprises a weakened portion that circles around the columnar portion in an annular region between the columnar portion and the flange in plan view.
By removing the cap from the spout body, the portion of the film adhered to the flange and the portion adhered to the columnar portion are separated by breaking along the weakened portion, and the cylinder is separated. The end of the part is opened,
The spout plug according to claim 1. The film is provided with an opening inside the columnar portion in a plan view, and is adhered to the columnar portion at least in a region that goes around the opening in a plan view.
By removing the cap from the spout body, the film is peeled off from the columnar portion, adhesion to the flange is maintained, and one end of the tubular portion is opened.
The spout plug according to claim 1. By removing the cap from the spout body, the film is peeled off from the flange along with the columnar portion, and one end of the tubular portion is opened.
The spout plug according to claim 1. In a plan view, the flange further includes a protruding portion extending inward from the one end of the tubular portion to a position not overlapping the columnar portion, and after removing the cap from the spout main body, the flange is further provided. When the cap is reattached to the tubular portion, the outer edge of the film abuts on the tubular portion-side surface of the protruding portion to close the tubular portion.
The spout plug according to claim 4.

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