JP2593497Y2 - plug - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a bottle stopper, particularly a stopper suitable for hot pack (hot liquid filling).

[0002]

2. Description of the Related Art A beverage such as juice is filled in a hot liquid state, and a stopper is capped immediately after filling. Therefore, the plug may be deformed by the hot liquid and the sealing property may be deteriorated, or the plug may idle due to poor adhesion between the plug and the bottle mouth.

Therefore, for example, as in the case of Japanese Utility Model Publication No. 1-40861, the plug is divided into an inner plug and an outer plug, and the inner plug is made of soft polyethylene having low heat resistance but has a high heat resistance. It is made of hard polypropylene and the inner plug is sandwiched between outer plugs. However, the structure in which the outer plug of the plug of the Japanese Utility Model No. 1-40861 sandwiches the inner plug is not structurally strong, and the inner plug is attached to the bottle mouth by a U-shaped groove at the end of the inner plug. Is fitted to the bottle mouth substantially. As a result, in the stopper of Japanese Utility Model No. 1-40861, when the bottle filled with hot liquid is capped, the inner stopper with weak heat resistance is deformed,
The defect that the holding power of the bottle mouth was weakened, the sealing property was weak, and the stopper was idling could not be sufficiently eliminated. SUMMARY OF THE INVENTION An object of the present invention is to provide a stopper that maintains a sufficient sealing property and does not run idle even when capping a bottle filled with hot liquid.

[0004]

The plug according to the present invention is a hard heat-resistant resin which is composed of a soft resin inner plug 1, a main body 2 and a canopy 3 which are continuous with a hinge 12, and which can temporarily support the inner plug during capping. The inner plug 1 includes a side wall 7 that presses against the inner wall 6 of the bottle mouth 5, a bottom wall 8 that extends inward from the upper end of the side wall 7 and covers the bottle mouth 5, and a side wall 7. The bottom wall 8 is provided with a score portion 10 forming a spout and a knob 11 for tearing the score portion 10. The part 9 includes a protrusion 15 on the upper surface located above the inner end of the bottle mouth 5.
A free edge portion 17 that slightly hangs down from the contact portion 16 of the flange portion 9 with the top surface of the bottle mouth 5 so as to have a truncated conical surface shape.
The main body 2 of the outer plug 4 has a projection 2 that firmly engages with the projection 38 on the outer surface of the bottle mouth 5 after the inner plug is attached to the inner surface.
A skirt portion 21 formed with a projection 26 for temporarily supporting the free edge portion 17 of the inner plug 1 at the time of capping, and a pouring cylinder portion 22 provided continuously from the skirt portion 21;
The pouring cylinder 22 has an opening edge 23 at its tip,
The lower leg is an outer lower leg 2 continuous with the skirt 21.
4 and an inner lower leg 25 for firmly pressing the projection 15 and the contact portion 16 of the inner plug 1, and a first gap between the outer lower leg 24 and the inner lower leg 25. 27 is provided, and a second gap portion 28 for accommodating the free edge portion 17 of the inner plug 1 is provided continuously with the first gap portion 27, and the canopy portion 3 is provided.
Is characterized in that it has an annular middle foot 30 that presses the inner peripheral surface of the opening edge 23 of the pouring cylinder 22 when closed.
Further, it is preferable that the inner plug 1 is made of polyethylene and the outer plug 4 is made of polypropylene.

[0005]

The plug of the present invention is in contact with the projection 20 firmly engaged with the projection 38 on the outer surface of the bottle mouth 5 of the outer plug 4 made of heat-resistant hard resin, and the projection 15 of the inner plug 1. Since the inner plug is strongly sandwiched between the inner lower leg 25 of the spouting tube portion 22 of the outer plug 4 that strongly presses the portion 16, the inner plug made of a soft resin is slightly deformed by the hot liquid. Also, the sealing property is maintained, and the inner plug and the outer plug do not run idle. Further, since the first gap portion 27 is provided outside the inner lower leg portion 25 of the pouring cylinder portion 22, the inner lower leg portion 25 is easily bent outward, and the inner lower leg portion 2 is easily bent.
The inner diameter of 5 can be made smaller than the outer diameter of the projection 15 of the inner plug, and a strong sealing property can be obtained. Further, the free edge 17 of the flange portion 9 of the inner plug 1 slightly hangs out of the contact portion 16 with the top surface of the bottle mouth 5 like a truncated cone surface shape. It is easy to fit into the protrusion 26 of the skirt 21 and the free edge 17 is
The capping is easy to bend and can be floated up and down in the second gap 28 with no adverse effect on capping. Further, since the free edge portion 17 of the flange portion 9 of the inner plug 1 is temporarily supported by the projection 26 of the skirt portion 21 of the outer plug 4 at the time of capping, capping is performed with the inner plug 1 attached to the outer plug 4. As a result, capping can be performed in one step. When the canopy part 3 of the outer lid 4 made of a hard heat-resistant resin that is hardly thermally deformed, the annular middle foot 30 of the outer lid 4 made of the hard heat-resistant resin that is hardly deformed when the canopy part 3 is closed. Since the inner peripheral surface of the opening edge portion 23 is press-contacted, the two retain their shapes even after filling with hot liquid, and maintain the sealing property.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 3, the plug according to the present invention has a soft resin inner plug 1, a main body 2 and a canopy 3 which are connected by a hinge 12, and the inner plug is closed at the time of capping. And a hard heat-resistant resin outer plug 4 that can be temporarily supported. The inner plug 1 of the embodiment is made of polyethylene, and the outer plug 4 is made of polypropylene.

The inner plug 1 has a side wall 7 pressed against the inner wall 6 of the bottle opening 5, a bottom wall 8 extending inward from the upper end of the side wall 7 to cover the bottle opening 5, and extending outward from the upper end of the side wall 7. And a flange portion 9. An annular bulge 29 slightly larger than the inner diameter of the bottle mouth is formed on the outer peripheral surface of the side wall 7 to enhance the engagement with the bottle mouth 5. Note that an annular bulging portion 29 is provided on the inner surface of the bottle mouth 5.
A concave portion for accommodating the bottle while maintaining the state of being pressed against the inner surface of the bottle mouth 5 may be provided. The bottom wall 8 is formed with a score portion 10 forming a spout and a knob 11 for tearing off the score portion 10. The knob 11 includes a ring 39 and a foot 36 reaching the bottom wall 7. . Knob 1 on bottom wall 8
An arrow-shaped relief 35 indicating the pulling direction 1 is formed. The flange 9 has an annular protrusion 15 on the upper surface located above the inner end of the bottle opening 5.
A thin free edge portion 17 is formed outside the contact portion 16 with the top surface of the bottle mouth 5 so as to slightly hang down like a frustoconical surface shape, and an annular ridge having a low height is formed on the lower surface of the contact portion 16. 32
Are formed to enhance the sealing performance with the top surface of the bottle mouth 5.

The main body 2 of the outer plug 4 has an annular projection 20 which firmly engages with an annular projection 38 on the outer surface of the bottle mouth 5 and a free edge portion 17 of the inner plug 1 after the inner plug is attached to the inner surface. It has a skirt 21 formed with an annular projection 26 for temporarily supporting at the time of capping, and a pouring cylinder 22 connected to the skirt 21.

The pouring cylinder 22 has an opening edge 23 at the end thereof, and its lower leg portion has an annular outer lower leg portion 24 continuous with the skirt portion 21 and the annular projection of the inner plug 1. It has an annular inner lower leg 25 for firmly pressing the ridge 15 and the contact portion 16, and a first gap portion 27 is provided between the outer lower leg 24 and the inner lower leg 25, A second gap 28 which accommodates the free edge 17 of the inner plug 1 continuously with the first gap 27
Is provided. When the canopy 3 is closed, the pouring cylinder 22
Has an annular middle foot 30 that presses against the inner peripheral surface of the opening edge portion 23. Reference numeral 37 denotes an opening / closing knob for the canopy portion 3, reference numerals 33 and 34 denote annular ridges provided to close the canopy portion 3, and engagement with each other. Reference numeral 31 denotes an annular ring for sealing when the canopy portion 3 is closed. It is a ridge.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a bottle mouth structure with a stopper according to an embodiment of the present invention.

FIG. 2 is an exploded plan view of the outer plug of the plug according to the embodiment of the present invention.

FIG. 3 is a plan view of the inner plug of the plug according to the embodiment of the present invention;

[Explanation of symbols]

1 ... inner plug, 2 ... body part, 3 ... canopy part, 4 ...
...... Outer stopper, 5 ... Bottle mouth, 6 ... Inner wall, 7 ... Side wall, 8 ... Bottom wall, 9 ... Flange part, 10 ... Score part, 11 ... Knob , 12 ... hinge, 15 ...
... Projecting portion, 16 Contact portion, 17 Free edge portion, 2
0 ... Projecting part, 21 ... Skirt part, 22 ... Discharge cylinder part, 23 ... Opening edge part, 24 ... Outside lower leg part, 2
5 ... inner lower leg, 26 ... projection, 27 ... first
Gap, 28 second gap 30, circular middle foot 3
0.

Claims (2)

(57) [Scope of request for utility model registration] 1. A plug comprising a soft resin inner plug 1, an outer plug 4 made of a hard heat-resistant resin, in which a body portion 2 and a canopy portion 3 are continuous with a hinge 12 and can temporarily support the inner plug during capping, The inner stopper 1 has a side wall 7 pressed against the inner wall 6 of the bottle mouth 5 and a side wall 7.
A bottom wall 8 which extends inward from the upper end of the container and covers the bottle mouth 5;
The bottom wall 8 is formed with a score portion 10 forming a spout and a knob 11 for tearing off the score portion 10. In the part 9, a projection 15 is formed on the upper surface located above the inner end of the bottle mouth 5, and slightly outside the contact part 16 of the flange part 9 with the top surface of the bottle mouth 5 like a truncated cone surface shape. A hanging edge 17 is formed, and the main body 2 of the outer plug 4 has a projection 20 that firmly engages with a projection 38 on the outer surface of the bottle mouth 5 after the inner surface of the outer plug 4 is attached, and the release of the inner plug 1. It has a skirt 21 formed with a projection 26 for temporarily supporting the edge 17 at the time of capping, and a pouring cylinder 22 continuously provided from the skirt 21. It has an opening edge 23 at the tip,
The lower leg is an outer lower leg 2 continuous with the skirt 21.
4 and an inner lower leg 25 for firmly pressing the projection 15 and the contact portion 16 of the inner plug 1, and a first gap between the outer lower leg 24 and the inner lower leg 25. 27 is provided, and a second gap 28 is provided to reach the first gap 27 and accommodate the free edge portion 17 of the inner plug 1. 22. A stopper having an annular middle foot 30 which presses the inner peripheral surface of an opening edge portion 23 of the opening 22. 2. The plug according to claim 1, wherein the inner plug is made of polyethylene and the outer plug is made of polypropylene.