JPH0579580B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a spout for a packaging container such as a Goebelt-Pseal paper container.

Conventional technology Conventionally, the pouring spout for a packaging container filled with alcohol, soy sauce, etc. has been composed of two pieces: a spout body to which the packaging container is attached, and a cap screwed into the spout body. It has been known. When pouring out alcoholic beverages, etc. from the packaging container through such a spout, for example, the cap is removed from the spout body, and then a sealing piece provided on the spout body is torn off to open it. ing.

Furthermore, as a cylindrical plug constructed of one piece, a cylindrical plug constructed of a piece provided with a breaking groove and a hinge portion (see Japanese Utility Model Publication No. 1983-63861) is also known; Since the break groove has the same structure as the one used when tearing off a sealing piece, it is difficult to break while leaving the hinge part intact, and it is considered desirable to sell the cylindrical stopper with a cap attached to the top end. However, there is no consideration given to the locking stability of the lid when resealing the opening after the opening is formed, and the lid is unstable, such as sinking into the opening.

Problems to be Solved by the Invention Since the spout as described above is composed of two pieces, the spout and the cap, it is necessary to manufacture them separately and then assemble them. The problem is that it becomes more complex and more effective. Another problem is that if the cap is lost, it becomes impossible to close it. Further, even when it is made into one piece, there remains a problem in reliability regarding the formation of the opening and the resealing of the opening.

Means for Solving the Problem This invention provides a single pouring spout attached to a packaging container.
It is a piece, and its structure is to form a curved deep groove around the lid that breaks when the lid is opened, and a linear shallow groove that connects both ends of the deep groove and becomes a hinge after opening the lid. The side wall and the lid are integrally molded, and a knob is provided protrudingly on the surface of the lid surrounded by the deep groove and the shallow groove, and a protrusion is provided on the knob to prevent the lid from falling into the opening. It was formed.

Action When pouring out the contents filled in the packaging container, first apply a pinching force. The force applied to this knob is transmitted to the deep groove and shallow groove through the lid, but since the wall thickness of the deep groove is thin, the stress concentrates there, causing the deep groove to break as if being torn to pieces. , On the other hand, since the shallow groove portion is thicker than the deep groove portion, it will not break. As a result, a lid surrounded by deep and shallow grooves is opened. The lid is opened and closed using the linear shallow groove as a hinge. In this way, the spout is always one piece regardless of whether the lid is opened or not, so the structure is simple and can be manufactured at low cost, and there is no risk of losing the lid.

Example Embodiments of the invention will be described with reference to the drawings.

In FIGS. 1, 2, and 3, reference numeral 1 indicates a Goebelt-Pseal-type container as a packaging container, and the inside of this paper container 1 is hermetically filled with milk, juice, etc. as contents. An opening 3 having a substantially pentagonal shape (the shape of a home base in baseball) is formed in the inclined surface 2 of the paper container 1. Reference numeral 4 denotes a one-piece spout made of plastic such as polyethylene or polypropylene, and the spout 4 is inserted into the opening 4 from the inside and welded. The spout 4 is composed of a spout main body 5, a lid 6, and a knob 7. The spout main body 5 has a flange 8 welded to the inner surface of the inclined surface 2 around the opening 3,
A side wall 9 passing through the opening 3 from the inner edge of the flange 8
extends almost vertically. This side wall 9 is connected to the top seal portion 1 of the paper container 1 as shown in FIG.
It gradually increases as it moves away from 0. The aforementioned flange portion 8 and side portion 9 constitute the spout main body 5 as a whole. The lid 6 is located in an opening surrounded by the upper end of the side wall 9, and has a home base shape tapered on the side away from the top seal portion 10. A deep groove 14 bent along the outer shape of the lid 6 is formed on the inner surface of the connection part between the lid 6 and the spout main body 5, more specifically, the upper end of the side wall 9 (excluding one side near the top seal part 10). The portion where the deep groove 14 is formed is thin and is cut when the lid is opened. The wall thickness t of this deep groove 14 portion is
A range of 0.2 to 0.3 mm is preferable because it does not need to be cut during spout welding or transportation, and can be easily cut when opening the lid.
Further, a linear shallow groove 15 connecting both ends of the deep groove 14 is formed on one side of the inner surface of the connecting portion between the lid 6 and the upper end of the side wall 9 on the side closer to the top seal portion 10. Its depth is shallower than the deep groove 14. Since the portion in which the shallow groove 15 is formed becomes a hinge after the lid is opened and is repeatedly bent, the thickness S thereof is preferably in the range of 0.4 to 0.5 mm. From the foregoing it is clear that the lid 6 is surrounded by a deep groove 14 and a shallow groove 15. On the top surface of the tapered portion of the lid 6,
The knob 7, which is substantially perpendicular to the lid 6, is provided in a protruding manner.
A stopper 16 for the protruding side wall 9 is formed at the base end of the knob 7, and a hook 17 extending toward the top seal portion 10 is formed at the upper end thereof. Reference numeral 18 designates a plurality of claws protruding from the outer surface of the base end of the side wall 9, as shown in FIGS.

In order to attach the spout 4 having such a configuration to the paper container 1, when assembling the paper container 1, it is inserted from the inside into the opening 3 of the paper surface 2 corresponding to the inclined surface. At this time, the claw 18 gets over the inner edge of the opening 3, so
The spout 4 is locked to the paper container 1. Next, the flange 8 of the spout 4 is welded to the inner surface of the inclined surface 2 by ultrasonic sealing or heat sealing. Next, when opening the lid of such a spout, an external force is applied to the knob 7. The force applied to this knob is applied to the deep groove 14 formed between the knob base and the inner surface of the side wall.
Since it acts intensively as a shearing force along the side wall, fracture starts from this part, and the irregularly shaped (burred) fracture surface gradually spreads to both sides until all the deep grooves 14 are fractured. On the other hand, since the shallow groove 15 portion is not broken, the lid 6 can be opened and closed using the shallow groove 15 portion as a hinge. Next, after the hook 17 of the knob 7 is engaged with the top seal portion 10, the contents such as milk are poured out from the spout 4. When closing the lid after pouring, the lid 6 is pushed into the spout main body 5. At this time, the stopper 16 comes into contact with the side wall 9, so the lid 6 does not fall inward, and since the burrs caused by the breakage of the deep groove 14 are caught together, the lid 6 does not spring up and open. .

In the above embodiment, the lid 6 has a home base shape, but in the present invention, the lid may have a substantially circular, rectangular, triangular, hexagonal, etc. shape. Further, in the above embodiment, the deep groove 14 is connected to the spout 4.
Although it is configured by grooves formed on the inner surface, in the present invention, grooves having a total depth deeper than the shallow grooves 15 may be formed on the inner and outer surfaces of the spout 4 so as to overlap each other. .

Effects of the Invention The pouring spout of the present invention is provided with a stopper that projects toward the side wall and is slightly away from the upper end of the side wall, at the tip of the deep groove on the surface of the lid surrounded by the deep groove and the shallow groove, which is remote from the shallow groove. Since there is a knob,
When external force is applied to the knob, shearing force is concentrated in the deep grooves along the inner wall surface of the side wall of the knob base, making it easy to open the lid from the deep grooves.Furthermore, even when the lid is closed,
The stopper provided on the knob prevents the lid from being thrown into the opening, and the engagement of the burrs stabilizes and holds the lid in the closing body. Furthermore, when opening and closing the lid, the opening pouring portion is not touched by fingers, which is sanitary.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of one embodiment of the spout of the present invention, Fig. 2 is a cross-sectional view of the same spout installed in a Goebelt-tup seal paper container, and Fig. 3 is a cross-sectional view of the spout of the same embodiment. A plan view, FIG. 4 is a left side view of the same, and FIG. 5 is a right side view of the same. 1...Packaging container (Gebelt push seal paper container), 4...Spout spout, 5...Spout main body, 6...
Lid, 7... knob, 14... deep groove, 15... shallow groove.

Claims (1)

[Claims] 1 A one-piece spout made of synthetic resin for a packaging container that is attached to an opening drilled in the packaging container and allows the contents of the packaging container to be poured out when the lid is opened, and the lid is attached along the inner wall surface on the upper side wall. A curved deep groove that is broken when the lid is opened is formed around the lid, and a linear shallow groove that is connected to both ends of the deep groove and serves as a hinge after opening the lid is formed, and after opening the lid, the contents are poured out. When dispensing, the liquid is poured out from the deep groove side, the shallow groove side does not form a pouring path, and at the tip of the deep groove remote from the shallow groove on the surface of the lid surrounded by the deep groove and the shallow groove,
A packaging characterized by having a knob projecting upward and having a stopper that is a little apart from the upper side of the side wall that projects toward the side wall side, and further having a flange-like peripheral part for attaching the container to the lower end of the spout. Container spout.