JP2003252351A - Inside plug for container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely seal an opening part of a container and to stably keep quality of a content. <P>SOLUTION: In an inside plug 2 which is fitted in the opening part 1a of the container 1 to hold the container under a sealed condition, an elastic tongue piece 4 which is brought into contact with a side wall of the opening part and seals it under a condition where the inside plug is fitted, is provided on the inside plug. In addition, even when a gap caused by molding error is generated between a constricted part of the opening part 1a and the outer periphery of the inside plug, sealing properties are ensured by the presence of the elastic tongue piece 4 and as a result, an advantage in which the sealing properties can be ensured is also generated without requiring accuracy of fitting dimension on molding which has been conventionally required to a fitting seal part between the opening of the container and the inside plug. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an inner stopper suitable for use in a container filled with powdery contents,
It is intended to further improve the sealing property at the mouth of the container.

[0002]

2. Description of the Related Art Containers filled with powdery contents such as detergents and bath salts are mainly made of a weldable sheet attached to the opening for taking out the contents. Before opening the container, this sheet is used. The quality of the contents is maintained by sealing with.

By the way, once the sheet is peeled off and the container is once opened, even if the cap provided is attached to the mouth portion, the seal at that portion is not sufficient, so it is unavoidable that the contents discolor or solidify. It may affect the quality of the product.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to propose a new inner stopper which can solve the above-mentioned problems that have been conventionally caused in a container filled with powdery contents.

[0005]

DISCLOSURE OF THE INVENTION The present invention relates to an inner plug which fits into the mouth of a container and holds the container in a hermetically sealed state, wherein the mouth is fitted to the inner plug when the inner plug is fitted. Is an inner stopper of a container, which is provided with an elastic tongue for contacting and sealing the side wall of the container.

Further, as the container, a container having a large mouth portion and filled with powdered contents is advantageously adapted in the present invention.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described more specifically with reference to the drawings.

FIG. 1 shows a state in which an inner stopper according to the present invention is attached to a mouth portion of a container, FIG. 2 is an external perspective view thereof, and FIG. 3 is a top view with a cap removed.

In FIGS. 1 to 3, 1 is a container for filling powdery contents, 2 is a handle t, and the tip portion is fitted into the mouth portion 1a of the container 1 to maintain the container 1 in a sealed state. The inner stopper, and 3 are caps that are detachably held by the undercut on the shoulder portion of the container 1.

Reference numeral 4 denotes an elastic tongue piece shown as an example formed integrally with the inner plug 2. The elastic tongue 4 contacts the side wall of the mouth 1a of the container 1 to enhance the sealing property of the container. Reference numeral 5 denotes an inner ring shown as an example formed integrally with the cap 3. The inner ring 5 is fitted at the tip of the mouth 1a of the container 1 to enhance the hermeticity of the container at that portion.
In addition, in the present embodiment, the handle t is shown as a shape divided into three in the circumferential direction, but this may be one location or a shape continuous in the circumferential direction, and is not limited in the present invention.

The inner stopper 2 according to the present invention keeps the container in a hermetically sealed state by fitting the tip portion thereof into the mouth portion 1a of the container 1. At this time, the elastic tongue 4 contacts the side wall of the mouth portion 1. As a result, the mouth 1a of the container 1 is doubly sealed. Further, even if a gap is formed between the constricted portion of the mouth portion 1a and the outer circumference of the inner plug due to a molding error or the like, the presence of the elastic tongue 4 ensures the sealing property, and as a result, In the configuration of the invention, it has been required for the fitting seal portion of the conventional container mouth portion and the inner stopper,
There is also an advantage that the sealing property can be secured without requiring the accuracy of the fitting dimension at the time of molding.

4 and 5 show another example of the structure of the inner plug according to the present invention.

In this example, the handle t of the inner plug 2 is formed into a ring shape so that a finger can be easily hooked on the inner plug 2. By providing such a ring-shaped handle t, the inner plug 2 is provided.
Is easier to remove.

In each of the containers shown in FIGS. 1 and 4, the inner ring 5 of the cap 3 is attached to the mouth portion 1a of the container 1.
It is possible to further enhance the sealing property of the container by adopting a structure to be fitted into.

The inner plug 2 according to the present invention can be made of synthetic resin, and the material is not particularly limited as long as the sealing performance can be secured when the elastic tongue 4 is integrally molded.

[0016]

According to the present invention, since the mouth of the container can be reliably sealed, the quality of the contents can be stably maintained until the contents are used up.

[Brief description of drawings]

FIG. 1 is a structural explanatory view of an inner plug according to the present invention.

2 is an external perspective view of the inner stopper and the container shown in FIG. 1. FIG.

3 is a top view of the example shown in FIG. 1 with a cap removed. FIG.

FIG. 4 is another configuration example of the inner plug according to the present invention.

FIG. 5 is a top view of the example shown in FIG. 4 with a cap removed.

[Explanation of symbols]

1 container 1a mouth 2 inside plug 3 caps 4 elastic tongue 5 Inner ring t handle

Continued front page    F-term (reference) 3E084 AA02 AA12 AB07 BA03 CA01                       CA02 CB04 CC03 DA01 DA02                       DB13 DB18 DC03 EA03 EB04                       EC03 FA09 FC04 GA08 GB12                       HA03 HB01 HC03 HD04

Claims (2)

[Claims] 1. An inner plug that fits into a mouth of a container and holds the container in a sealed state, wherein the inner plug is sealed by contacting a side wall of the mouth when the inner plug is fitted. An inner stopper of a container provided with an elastic tongue piece. 2. The inner stopper according to claim 1, wherein the container is a container for powder filling having a large mouth size.