JP2001213467A - Sealed container made of resin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealed container made of a resin, which can be easily unsealed without applying a large force when being initially unsealed, but which is hard to accidientally open. SOLUTION: This sealed container made of a resin is equipped with a body section and a lid section. In this case, the top of the body section is open, and at the upper end of the body section, an internal annular section and an external annular section are formed. The lid section closes the upper open section of the body section, and a lid annular section which is fitted in a space between the internal annular section and the external annular section is formed on the lid section. Also, the external annular section is formed to be easy to separate from the body section. In such a sealed container made of a resin, a stress concentrating means is provided on the external annular section so that the external annular section may become easy to shear.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin-sealed container which cannot be returned to its original shape once opened, but can be repeatedly opened and closed after opening. The present invention relates to a resin-sealed container that can be easily opened when opening.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No.
Once opened, it cannot be returned to its original form,
However, there is disclosed a resin-made sealed container that can be repeatedly opened and closed after opening. The container is composed of a soft plastic body part whose upper part is open, and a hard plastic lid part which covers an open part of the body part. An inner annular portion and an outer annular portion are provided at an open upper end of the body portion, while a lid annular portion extending downward is provided at a peripheral portion of the lid portion, and the lid annular portion is provided with the inner annular portion. The container is sealed by fitting between the part and the outer annular part.

When opening a sealed container for the first time,
Opening is possible by pulling the finger hook protrusion provided on the outer annular portion and separating the outer annular portion from the body. For this reason, once opened, the container cannot be returned to its original form, and it can be easily recognized whether or not the container has been opened once. JP-A-9-202352
Japanese Patent Application Publication No. JP-A-2003-115122 discloses a watertight container that allows a new article confirmation band provided at the upper end of the body part of a container to be separated by pulling a knob to enable initial opening. JP 56
No. 41155 discloses that the lower end of the side wall provided on the lid is
A sealed container is disclosed that allows the tear-off tab to be cut off by pulling to allow initial opening.

[0004]

SUMMARY OF THE INVENTION In any of the above containers,
The first opening is made possible by cutting off a part of the lid or body, such as the outer ring or the brand new band. Further, by separating a part of the container, it can be recognized whether or not the container has been opened once. Therefore, when it is desired to open the outer ring, it is desirable that the outer annular portion and the like can be easily cut off without applying a strong force. On the other hand, when the opening is not intended, the outer annular portion or the like must not be accidentally cut off. The conventional container as described above is provided with a knob or a projection for separating the outer annular portion or the like in order to facilitate opening. However, since the outer annular portion and the like are formed integrally with the lid or the body of the container with appropriate strength so as not to be accidentally cut off, they cannot be easily opened even if the knob or the like is pulled. There is a problem.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to open easily without applying a strong force when first opening, but it is difficult to accidentally open, and once opened, it returns to its pre-opened form. However, it is an object of the present invention to provide a sealed container made of resin which cannot be sealed, but can be repeatedly opened and closed after opening.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided a body having an upper portion opened, an inner annular portion and an outer annular portion formed at an upper end portion, and a lid on an upper opening portion of the body portion. A lid portion formed with a lid annular portion that fits between the portion and the outer annular portion,
In a resin-made sealed container in which the outer annular portion is easily separated from the body portion, by providing the outer annular portion with a stress concentration means, when opening the first time, it can be easily applied without applying a strong force. Provided is a resin-sealed container that can be opened.

The present invention also provides a lid having an inner annular portion and an outer annular portion extending downward, and an annular portion fitted at the upper end between the inner annular portion and the outer annular portion. In the resin-made sealed container having a body portion, the outer annular portion is formed easily from the lid portion,
A sealed container made of resin, wherein a stress concentration means is provided on the outer annular portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 2, the resin sealed container 1 includes a body portion 10 made of a soft plastic, for example, polypropylene, and a lid portion 40 made of a hard plastic, for example, polystyrene. As shown in FIG. 1, the body 10 has a bottom 14 and a side wall 16,
The housing part 18 is formed by the side wall part 16 and 4. An inner annular portion 20 and an outer annular portion 22 are formed at the upper end of the side wall portion 16. The inner annular portion 20 is an extension of the side wall portion 16, and an outer projecting portion 24 is formed at a boundary between the inner annular portion 20 and the side wall portion 16 so as to project outward. Further, a sealing projection 26 is formed above the outer projection 24.

An outer annular portion 22 is formed outside the outer surface projecting portion 24, and the outer annular portion 22 is formed integrally with the outer surface projecting portion 24 via a thin portion 30 which can be easily separated. A retaining protrusion 34 is formed inside a position slightly below the upper end of the outer annular portion 22. or,
A finger hook protruding portion 32 extending downward and inclined is formed at one position of the lower end of the outer annular portion 22. Finger hook projection 32
May be a simple shape such as a sphere. Further, a groove formed in the stress concentration means 35, that is, the outer annular portion 22 is provided adjacent to the finger hook protruding portion 32. Preferably, the stress concentrating means 35 or grooves are obliquely upward from the point of one end on the right or left side of the base of the finger hook projection 32 toward the other end, that is, coincide with the inclined extension direction of the finger hook projection 32. To extend in the direction of the outer annular portion 22. However, the grooves need not traverse the outer annular portion 22.

As shown in FIG. 1, a rising portion 44 is formed around the lid flat portion 42 in the lid portion 40, and a lid annular portion 46 is formed on the lower surface of the lid flat portion 42 on the periphery thereof. . The lid annular portion 46 fits between the inner annular portion 20 and the outer annular portion 22 of the body 10, and the lower end of the lid annular portion 46 has the sealing protrusion 26 of the inner annular portion 20 and the outer annular portion 20. Part 2
A thick portion 48 that engages with the second retaining projection 26 is formed. On the lower surface of the lid portion 40, an auxiliary annular portion 50 is formed on the inner periphery of the lid annular portion 46, and the outside of the auxiliary annular portion 50 and the inside of the inner annular portion 20 engage.

The resin-made sealed container according to the present invention is used as follows. The contents are filled in the accommodating part 18 of the body part 10,
Next, the lid portion 40 is placed on the body portion 10 and pressed to fit the lid portion 46 of the lid portion 40 between the outer annular portion 22 and the inner annular portion 20 of the body portion 10. . At this time, the inner annular portion 20 and the outer annular portion 22 of the soft plastic body 10 extend, and the thick portion 48 of the lid annular portion 46 extends.
However, the seal is formed over the retaining protrusion 34 of the outer annular portion 22 and the sealing protrusion 26 of the inner annular portion 20.

At the time of opening, the outer annular portion 22 connected in a ring shape is sheared in the vicinity of the finger hook protrusion by pulling the finger hook protrusion 32. Next, the finger hook projection 32 is further pulled to cut the thin portion 30, thereby separating the outer annular portion 22 from the outer projection 24. At this time, since the outer annular portion 22 is provided with the stress concentration means 35 adjacent to the finger hook projecting portion, the stress generated in the outer annular portion 22 by pulling the finger hook projecting portion 32 causes the stress concentration. Since it concentrates on the means 35, the outer annular portion 22 can be easily sheared even with a small tensile force. That is, due to the stress concentration effect provided by the stress concentration means 35, the force pulling the finger hook projection 32 effectively shears the outer annular portion 22.

Further, in the container according to the present invention, since the outer annular portion 22 can be effectively sheared with a small force as described above, the outer annular portion 22 is made thicker than when the stress concentration means 35 is not provided. Even if designed, the outer annular portion 22 can be sheared by hand. Thereby, the finger hook protrusion 3
Without pulling 2, the outer annular portion 22 is less likely to be accidentally cut off.

Moreover, in an advantageous configuration of the invention, the stress concentration means 35, ie the grooves, are at an angle which is not orthogonal to the outer annular part 22,
That is, since the outer annular portion 22 is provided at an inclined angle with respect to the outer annular portion 22, the outer annular portion 22 can be more efficiently sheared. That is, when the finger hook protrusion 32 is pulled directly upward to shear a groove provided at a right angle to the outer annular portion 22, most of the pulling force applied to the finger hook protrusion 32 is reduced by the outside. It acts as a force to bend the annular portion 22 outward, and less component force acts to shear the outer annular portion 22. On the other hand, when the groove is provided at an inclined angle and the finger hook protrusion 35 is pulled in the direction of the groove, more of the applied pulling force is applied to the outer annular portion 22.
Acts as a component force for shearing. By this action, the outer annular portion 22 can be more efficiently sheared. After the outer annular portion 22 is cut off and opened, the body 10 and the lid 40 can be used as a sealed container that can be repeatedly opened and sealed.

In another embodiment (not shown) of the present invention,
The configuration of the lid and the body in the above embodiment can be reversed. That is, the inner annular portion and the outer annular portion integrally formed so as to be easily detachable are provided on the lid portion, and the inner annular portion and the outer annular portion corresponding to the lid annular portion of the embodiment are provided on the body. An annular portion may be provided between the outer annular portion and a stress concentration means and a finger-hook protrusion may be provided on the outer annular portion.

In another embodiment of the present invention, as shown in FIG. 3, the stress concentration means may be provided as a concave portion 36 formed at the lower end (or upper end) of the outer annular portion. Further, the stress concentration means can be formed in any form that concentrates the stress due to the force applied to open the package.

[0017]

According to the present invention, when opening for the first time, it can be easily opened without applying a strong force, but it is difficult to open accidentally, and once opened, it will be in the form before opening. However, it is possible to obtain a hermetically sealed resin container that cannot be returned, but can be repeatedly opened and closed after opening.

[Brief description of the drawings]

FIG. 1 is a sectional view of a resin container according to the present invention.

FIG. 2 is a perspective view of a resin container according to the present invention.

FIG. 3 is a partially enlarged view of a stress concentration unit according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Resin sealing container 10 Body part 14 Bottom part 16 Side wall part 18 Housing part 20 Inner annular part 22 Outer annular part 24 Outer surface protruding part 26 Sealing protruding part 30 Thin part 32 Finger hook protruding part 34 Retaining preventing protruding part 35 Stress concentration means 40 Cover Part 42 lid flat part 44 rising part 46 lid annular part 50 auxiliary annular part

Claims (8)

[Claims] A body having an upper opening and an inner annular portion and an outer annular portion formed at an upper end; a lid at an upper opening of the body; and an inner annular portion and an outer annular portion. And a lid formed with a lid annular portion that fits between the outer annular portion and the lid. A sealed container made of resin, characterized in that a means is provided. 2. The resin sealed container according to claim 1, wherein said stress concentration means comprises a groove formed in said outer annular portion. 3. The resin-sealed container according to claim 1, wherein the stress concentration means comprises a groove formed in the outer annular portion and a finger-hanging protrusion. 4. A resin-made resin according to claim 1, wherein said stress concentrating means comprises a groove crossing said outer annular portion in a direction inclined and a finger hook projecting portion extending in said inclined direction. Sealed container. 5. A body formed at an upper end with a lid formed with an inner annular portion and an outer annular portion extending downward, and an annular portion fitted between the inner annular portion and the outer annular portion. Wherein the outer annular portion is provided with a stress concentration means, wherein the outer annular portion is easily separated from the lid portion. 6. The resin-made sealed container according to claim 5, wherein said stress concentration means comprises a groove formed in said outer annular portion. 7. The resin-made sealed container according to claim 5, wherein said stress concentration means comprises a groove formed in said outer annular portion and a finger-hanging projection. 8. The resin-made resin according to claim 5, wherein said stress concentration means comprises a groove crossing said outer annular portion in an inclined direction and a finger hook projecting portion extending in said inclined direction. Sealed container.