JPH0716592Y2 - Easy opening and dispensing device for containers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an easy-opening and pouring device provided in a carton container having a barrier property for containing a liquid such as a beverage.

[Conventional technology]

In this type of container, as shown in FIG. 6, a barrier layer 2 made of an aluminum thin film or the like is provided on the wall surface of the container 1 to provide a barrier property against gas and the like. Also, a pouring tool 3 attached to the container for taking out liquid inside the container
Also, the barrier thin film 4 having the same purpose is provided. An example of such a conventional technique is disclosed in Japanese Utility Model Laid-Open No. 60-163251.

However, in the conventional configuration, the barrier layer 2 and the barrier thin film 4 are separated from each other to some extent as shown in FIG. 6, so that an annular portion having no barrier remains between them and this portion is Gas and the like easily pass through as shown by an arrow 5, and a safe barrier property cannot be maintained.

In order to solve this problem, the barrier layer that imparts barrier properties to the wall surface of the container has a structure in which the tubular spout barrier thin film is polymerized at its peripheral portion when viewed inward and outward of the tubular spout. Proposed (for example, actual development 61-103314
Issue). With this structure, the gas inside the container cannot directly flow in and out of the container, and the barrier property of the container is improved.

[Problems to be solved by the device]

The barrier thin film of the tubular pouring tool may be formed as a laminated sheet in which a metal thin film is laminated as a barrier layer inside, but in such a case, in the above-mentioned known configuration,
If the edge of the metal thin film is exposed on the outer peripheral edge of the laminated sheet and the acidic food or the like is contained inside the container, there is a problem that the container is susceptible to corrosion. On the other hand, if the barrier thin film is simply joined to the inner surface of the tubular pouring tool, it may be easily peeled off and its accurate positioning may be difficult.

The present invention has been made to solve the above problems,
The purpose is not to cause a portion having no barrier property, but it is also possible to prevent corrosion of a barrier layer such as a metal thin film inside the barrier thin film of the tubular pouring tool, and the tubular pouring tool. An object of the present invention is to obtain an easy-opening and pouring device capable of accurately and easily attaching the barrier thin film to the inner surface of the.

[Means for Solving the Problems]

In order to achieve the above object, the easy-open pouring device of the present invention has a cylindrical pouring tool inserted into an opening formed in a wall surface of a container having a barrier property, and a mounting flange projecting from an outer circumference of an inner end thereof. Joined to the inner surface of the container wall along the opening edge,
Inside the tubular pouring tool, a partition wall having a thin line portion for opening and a barrier thin film are provided, which is an easy-opening pouring device for a container, when viewed inward and outward from the tubular pouring tool, With respect to the barrier layer that imparts a barrier property to the wall surface of the container, the barrier thin film of the tubular pouring tool is superposed at its peripheral portion, and a thin plate-shaped recess is formed over the inner surface of the mounting flange and the partition wall. The barrier thin film is fitted into and bonded to the recessed portion, and the barrier thin film is embedded inside the barrier thin film in a laminated form so that the peripheral edge of the barrier layer is not exposed at the outer peripheral edge of the barrier thin film. .

(Operation) By adopting such a configuration, the inner peripheral edge portion of the barrier film on the inner surface of the container and the peripheral edge portion of the barrier thin film of the tubular pouring tool prevent gas and the like from directly flowing inward and outward. In addition, since the peripheral edge of the barrier layer inside the barrier thin film of the tubular pouring tool is not exposed at the outer peripheral edge of the barrier thin film, corrosion due to acidic food or the like does not occur.

〔Example〕

Next, an embodiment of the present invention will be described with reference to the drawings.
In the figure, 10 is the wall surface of the container, in which an opening 11 is provided. The container 10 is made of a carton, and the cross-sectional structure of the material is, from the outside to the inside, layers of polyethylene, paper, polyethylene, aluminum, polyethylene terephthalate, and polyethylene. In the figure, only the aluminum layer 12 forming the barrier layer is shown.

A tubular spout 13 is fitted into the opening 11. Spout 13
As shown in FIG. 1, the main body 13a and the cap 13b are cylindrical, and a male screw 14 for screwing the cap 13b is formed on the outer periphery of the main body 13a. A partition wall 15 is integrally formed on the bottom of the main body 13a, and a thin line portion 16 for opening is provided on the partition wall 15. The thin wire portion 16 is the third
As shown in the plan view of the drawing, for example, it may be annular. A rising bar 17 is provided inside the thin-walled line portion 16 and a partition wall 15
The pull ring 18 is integrally formed on the top thereof. On the other hand, on the outside of the bottom of the body 13a, the flange 2
0 is integrally formed. The planar shape of the flange 20 can be, for example, an annular shape. The above parts are integrally molded with a synthetic resin such as polyethylene.

A thin plate-shaped recess is formed on the back surface of the flange 20, and the barrier thin film 21 is embedded in the recess. By thus fitting the barrier thin film 21 in the recessed portion, the positioning of the barrier thin film 21 becomes easy and reliable,
The barrier thin film 21 becomes difficult to peel off. As shown enlarged in FIG. 4, the barrier thin film 21 has a barrier layer 22 inside. The barrier thin film 21 may have a three-layer structure of polyethylene, aluminum, and polyethylene, for example, and the barrier layer 22 may be formed of aluminum in the middle portion. The barrier thin film 21 is joined to the partition wall 15 by insert molding or the like. The outer peripheral edge of the barrier layer 22 of the barrier thin film 21 is not exposed to the outer periphery of the barrier thin film 21 as is apparent from FIG. It has become.

The spout body 13a is attached to the container 10 by fitting its tubular portion into the opening 11 and joining the outer surface of the flange 20 to the inner surface of the wall surface of the container 10 at the joint surface 24 shown in FIG. To be This attachment can be carried out, for example, by applying the ultrasonic horn 26 shown in FIG. At this time, as shown by S in FIG.
By setting the outer periphery of 26 to be outside the outer peripheral edge of the flange 20, the ultrasonic vibration is well transmitted to the outer peripheral end of the flange, and the joining is performed well.

When the spout body 13a is attached as described above, the outer peripheral edge of the barrier thin film 21 is outside the inner edge of the barrier layer 12 of the container 10, and when viewed in the inward and outward directions, both of them overlap by L. The sizes of the flange 20 and the barrier thin film 21 are determined. Providing the barrier thin film 21 on the flange 20 enables such polymerization.

To take out the liquid from the container, first remove the cap 13b and pull the pull ring 18 with a finger to break the partition wall 15 along the thin film line portion 16. In addition, along with this, a barrier thin film
21 is also broken, which allows the contents of the container to be poured out. After the pouring, the cap 13b is applied again.

Before opening the spout, the barrier layer 12 of the container 10 and the barrier thin film 21 of the flange 20 are polymerized, so that gas or the like flows directly in and out of the container as shown in FIG. The barrier property of the container is improved because it cannot be bypassed and almost no detour is possible.

FIG. 5 shows an embodiment of the present invention. In this embodiment, the first
Unlike the case of the figure, the thin line wire portion 16a for opening is formed on the upper surface of the partition wall 15. By doing so, the cut end when opened is cleaner.

[Effect of device]

According to the present invention, it is possible to increase the barrier property of the dispenser part of the container by polymerizing the barrier layer on the container side and the barrier thin film on the dispenser side. It can prevent the corrosion of the barrier layer such as the metal thin film embedded inside the barrier thin film of the device,
Moreover, the barrier thin film can be accurately and easily attached to the inner surface of the tubular dispensing tool.

[Brief description of drawings]

1 is a sectional view of the easy-opening and pouring device of the present invention, FIG. 2 is a partial sectional view of the easy-opening and pouring device when a cap is applied, and FIG. 3 is a plan view of FIG. 1 and FIG. Is an enlarged view of the IV portion of FIG. 1, FIG. 5 is a view similar to FIG. 1 of a modified example of the present invention,
FIG. 6 is an explanatory diagram of a conventional example. 10 …… container, 11 …… opening, 12 …… barrier layer, 13 …… spout, 13a …… spout body, 13b …… cap, 15 …… partition wall, 16, 16a …… thin wall part for opening , 20 …… Flange, 21…
… Barrier thin film, 22 …… Barrier layer.

Claims (1)

[Scope of utility model registration request] 1. A tubular pouring tool is fitted into an opening formed in a wall surface of a container having a barrier property, and a mounting flange protruding from an outer circumference of an inner end thereof is joined to an inner surface of the wall surface of the container along the peripheral edge of the opening. An easy-opening pour-out device for a container, in which a partition wall having a thin line portion for opening and a thin film having a barrier property are provided inside the tubular pour-out device, when viewed inward and outward from the tubular pour-out device. A barrier layer that imparts a barrier property to the wall surface of the container, so that the barrier thin film of the tubular pouring tool is polymerized at its peripheral portion, forming a thin plate-shaped recessed portion over the inner surface of the mounting flange and the partition wall, The barrier thin film is fitted into and bonded to the concave portion, and the barrier thin film is embedded inside the barrier thin film in a laminated form so that the peripheral edge of the barrier layer is not exposed at the outer peripheral edge of the barrier thin film. Easy opening and dispensing device.