JPH11198952A - Container cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container cap wherein when an outer cover is unsealed, an inner stopper can be prevented from being turned together with the cover so that the stopper is prevented from being loosened and removed from a mouth of the container, and moreover, a function to ensure unsealing can be obtained and also after usage, the inner stopper can be removed completely from the mouth of the container so as to be separately recovered. SOLUTION: There are provided an inner stopper 2 adapted for threaded engagement with a container mouth 1 and an outer cover 3 adapted for threaded engagement with the stopper 2. An external thread cylinder 20 adapted for threaded engagement with the cover 3 is provided on the stopper 2, and a pour cylinder 21 is provided inside the cylinder 20. A sealing plate 22 is provided at the inner bottom of the cylinder 21 and a grip piece 23 is provided on the upper surface of the plate 22. And a reverse-rotation preventing claw 4 and a pilfer-proof ring 5 are formed at the lower end of the stopper 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic container or the like, which is screwed into a mouth and sealed. It relates to a container cap that can be put out.

[0002]

2. Description of the Related Art Conventionally, a container cap for sealing a plastic container or the like is provided with an outer cylindrical portion formed with a female screw having a shape capable of being screwed into a male screw portion of a container opening, and an outer lid fitted over the outer cylindrical portion. Part, forming a spout cylinder inside thereof, forming a sealing plate at the inner bottom of the spout cylinder, forming an appropriately shaped opening plate so as to be surrounded by a thin portion on the sealing plate, A tapping type comprising an inner plug having a knob piece formed on the upper surface thereof and an outer lid covering the inner plug is widely used.

[0003] When sealing a plastic container or the like, an inner cap of a container cap is screwed into the opening of the container to seal the container, and when the container is opened, the outer lid is removed and the knob piece is pulled to pull the container thin. The opening plate is removed by breaking the opening plate to form a pouring hole.

[0004]

However, if the above-mentioned conventional container cap employs an outer lid that is screwed into the upper male screw cylinder of the inner plug, when the outer lid is opened and closed by opening and closing, the inner plug is common. There has been a problem that the container may rotate and come off the container mouth.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve this problem, and the gist of the present invention is to provide an inner plug which can be screwed into a container mouth, and an outer lid which is screwed into the inner plug. In the upper part of the inner plug, a male screw cylinder to which the outer lid can be screwed, a spout cylinder inside the male screw cylinder, a sealing plate on the inner bottom surface of the spout cylinder, and an upper surface of the sealing plate A container cap provided with a knob piece and formed with a reverse rotation preventing claw and a pill fur proof ring at a lower end of the inner plug.

Hereinafter, the present invention will be described with reference to the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, FIG. 1 is a front view of a half section in a state where a container cap is plugged in a container, and FIG. FIG. 3 is a perspective view showing a state where a container cap is removed.

According to the present invention, as shown in FIGS. 1 to 3, an inner plug 2 which can be screwed into a container mouth 1 and an outer lid 3 which is screwed into the inner plug.
A male screw cylinder 20 to which the outer lid 3 can be screwed, an injection cylinder 21 inside the male screw cylinder,
A container provided with a sealing plate 22 on the inner bottom surface of the pouring cylinder and a knob piece 23 on the upper surface of the sealing plate, and a reverse rotation preventing claw 4 and a pill fur proof ring 5 formed at the lower end of the inner plug; Cap.

The inner plug 2 which can be screwed into the container opening 1 in the present invention has an outer cylinder 24 as shown in FIGS.
On the inner surface of the outer cylinder 24, a female screw portion 201 having a shape capable of being screwed to the male screw portion 11 of the container mouth 1 is formed.

On the upper part of the inner plug 2 of the present invention, for example, FIGS.
As shown in FIG. 3, a male screw cylinder 20 to which the outer lid 3 can be screwed.
And an injection cylinder 21 through a concave groove 25 inside the male screw cylinder,
A sealing plate 22 is provided on the inner bottom surface of the pouring cylinder and a knob 23 is provided on the upper surface of the sealing plate. A thin portion 221 is formed around the sealing plate 22.

The sealing plate 22 seals the inner plug 2 before opening, but by pulling the knob piece 23, the sealing plate 22 is torn along the thin portion 221 to be removed and opened. It has become.

An outer cylinder 30 is formed so as to hang down from the outer periphery of the top plate 31 of the outer lid 3, and a female screw portion 301 having a shape capable of being screwed into the male screw cylinder 20 of the inner plug 2 is formed on the inner surface thereof. . Further, an inner cylinder 32 is formed to be suspended from the top plate 31 on the inner periphery of the outer cylinder 30, and the lower end of the inner cylinder 32 comes into close contact with the inner surface of the pouring cylinder 21 of the inner plug 2. Even after opening, leakage of the contents can be prevented.

In the present invention, at the lower end of the inner plug 2, a reverse rotation preventing claw 4 and a pill fur proof ring 5 are formed.
As shown in FIGS. 1 to 3, the reverse rotation preventing claw 4 is
And the inner stopper 2 is not rotated in the opening direction because the inner stopper 2 does not rotate together when the outer lid 3 is opened. There is no risk of detaching or loosening.

[0013] As shown in FIG.
If the notch 110 is partially formed in the screw 1, the screwed female screw portion 201 bites and becomes difficult to rotate, so that the stress required for rotating for opening (opening torque).
And the inner plug 2 is less likely to rotate together when the outer lid 3 is opened.

Although not shown, if the male screw portion 11 and the female screw portion 201 are screwed in a direction opposite to the normal opening direction of the outer lid, the inner plug 2 rotates together when the outer lid 3 is opened. Even if it is attempted, there is no risk of loosening because it will be tightened.

As shown in FIGS. 1 and 2, when a plastic container or the like is sealed using this container cap 1,
The outer lid 3 is screwed into the inner plug 2 in advance, and in this state, the female screw portion 201 of the inner plug 2 is screwed into the male screw portion 11 of the container mouth portion 1 to hermetically seal it. Remove the lid 3 and pull the knob 23 to remove the sealing plate 22 from the thin portion 22
1 is torn and removed, forming a pouring hole so that the contents can be poured out from the pouring cylinder 21.

As shown in FIG. 1 and FIG.
A sealing material 6 made of a relatively soft ethylene-vinyl acetate copolymer or the like is disposed on the inner top surface of the container 4 so as to improve the sealing property between the inner surface of the container 1 and the sealing material. By forming a short inner cylinder 26 inside the inner surface of the container 6 so as to be in close contact with the inner surface of the container opening 1, the sealing performance can be improved from the inner surface of the container opening 1 to effectively prevent leakage, and the short inner cylinder can be effectively prevented. 26 can increase the opening torque.

After the contents are poured out through the pouring tube 21 and used, the inner stopper 2 is strongly rotated in the opening direction to engage the reverse rotation preventing claw 4 with the check protrusion 11. By this, the rotation of the pill fur proof ring 5 is prevented, and by further rotating the inner plug 2, the pill fur proof ring 5 is broken, and the inner plug 2 can be detached from the container opening 1, and The container has an effect that the material can be collected only by the container.

As a result, when the inner plug is opened at the time of distribution at a store or the like, a function of guaranteeing that the pill fur proof ring 5 remains unopened becomes evident to the rupture of the pill fur proof ring 5 as evidence. can get.

If a break line 51 is formed at an appropriate position on the pill fur proof ring 5, the pill fur proof ring 5 is completely connected to the inner plug 2 when the inner plug 2 is detached from the container mouth 1. There is an effect that it is easier to separate from the main body.

The container cap of the present invention is made by injection molding, for example, polyethylene, polypropylene, etc.
Can be manufactured. The plastic container to which the container cap of the present invention can be applied is not particularly limited. For example, it can be suitably used for a biaxially stretched blow bottle of polyethylene terephthalate.

[0021]

As described above, the container cap of the present invention comprises an inner plug which can be screwed into the container mouth, and an outer lid which is screwed into this inner plug. A male screw cylinder to which the outer lid can be screwed, a spout cylinder inside the male screw cylinder, a sealing plate on the inner bottom surface of the spout cylinder, and a knob piece provided on the upper surface of the sealing plate, and a lower end of the inner plug at the lower end As the feature is that the pill fur proof ring and the anti-reverse protrusion are formed, the inner plug is hard to rotate together when opening the outer lid, and there is no possibility that the inner plug will slip off or loosen from the container mouth. In addition, a function of ensuring unopening is obtained, and after use, the inner plug is completely removed from the container mouth to collect the material.

[Brief description of the drawings]

FIG. 1 is a front view of a half section in a state where a container cap is plugged in a container.

FIG. 2 is a perspective view showing a state in which the container cap is plugged in the container and a state in which the container cap is removed from the main body.

FIG. 3 is a perspective view showing a state where a container cap is removed.

[Explanation of symbols]

 1 Container mouth. 2 Inner plug. 20 Male screw cylinder. 21 Discharge cylinder. 22 Sealing plate. 23 Knob pieces. 3 Outer lid. 4 Reverse prevention claw. 5 Pill fur proof ring.

Claims (1)

[Claims] 1. An inner screw that can be screwed into a container mouth, and an outer lid that is screwed into the inner plug. A male screw cylinder into which the outer lid can be screwed, and a male screw on the upper part of the inner plug. A spouting tube inside the tube, a sealing plate on the inner bottom surface of the spouting tube, a knob piece provided on the upper surface of the sealing plate, and a reverse rotation prevention projection and a pill fur proof ring formed at the lower end of the inner plug. A container cap characterized by the following.