JP2010030606A - Easy-to-open plastic container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sanitary liquid container that has a structure for preventing the container from being opened fraudulently, and is opened by a simple operation. <P>SOLUTION: The easy-to-open plastic container consists of: a container body; an inner stopper nozzle; and an over-cap. The inner stopper nozzle has a sealing member firmly fixed to the opening in the body of the container and integrally molded so as to be continuous with a thin wall part. The sealing member has a fitting projection. The over-cap includes: a fraudulent opening prevention band that prevents detachment of the over-cap; and a sealing member fitting portion that fits on the fitting projection. By moving the over-cap downward after removing the fraudulent opening prevention band, the sealing member is pressed by the over-cap and separated from the thin wall part, thereby opening the container. The sealing member is held by the over-cap by the fitting of the fitting projection and sealing member fitting portion. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a plastic container for storing a liquid such as a source and oil, and more particularly to an easily openable plastic container having a structure for preventing unauthorized opening.

Conventionally, containers for storing liquid foods such as sauces and cooking oils have been provided with an opening ring and a cut in a plastic inner nozzle, and the pull ring is pulled with a finger to open from the cut portion. Commonly used.
For this type of container, the diameter of the pull ring cannot be made sufficiently large due to restrictions on the size of the spout, making it difficult to put fingers in the pull ring or requiring a large force at the beginning of opening, especially for people with weak power. Was difficult to open. In addition, since the finger is put in the pull ring and opened, the finger touches the nozzle and there is a side surface that is not hygienic.

  In recent years, there have been crimes for illegally opening merchandise displayed in stores and mixing in foreign substances. Therefore, a means for preventing these liquid containers from being illegally opened has been desired.

The internal stopper nozzle with hinge type spout disclosed in Patent Document 1 is an internal stopper that achieves both a virgin seal performance for ensuring the authenticity of the contents and a liquid removal performance for improving the liquid drainage when the contents are poured out. Although it is a nozzle, but the point of opening with a pull ring is not improved, and since the outer overcap does not have a structure that can not be easily opened, the overcap is removed, for example, from the thin part of the inner plug nozzle It is also possible in some cases to inject foreign matter with a syringe.
This problem is not limited to the container having the inner stopper nozzle disclosed in Patent Document 1, but is a problem that liquid containers having a pull ring type inner stopper nozzle generally have.
JP 2005-82227 A

  The present invention has been made for the purpose of solving the above-mentioned conventional problems, and provides a hygienic liquid container that has a structure for preventing an overcap from being tampered with and can be opened with a simple operation. To do.

  As a means for solving the above-mentioned problems, the invention according to claim 1 is a plastic container comprising a container body, an inner stopper nozzle, and an overcap, and the inner stopper nozzle is fixed to an opening of the container body. And a sealing member formed integrally and connected at a thin portion, the sealing member has a fitting projection, and the overcap is a tamper-evident band that prevents the overcap from being removed, A sealing member fitting portion that fits into the fitting protrusion, and after removing the unauthorized opening prevention band, the sealing member is pushed by the overcap by moving the overcap downward, and the thin portion And the container is opened, and the sealing member is held by the overcap by fitting the fitting protrusion and the sealing member fitting portion. It is.

  According to a second aspect of the present invention, the overcap has a liquid leakage preventing inner ring that fits into the nozzle portion of the inner plug nozzle. After opening, the inner cap nozzle is resealed by the overcap. The easily openable plastic container according to claim 1, wherein the easy-open plastic container can be stopped.

  In the invention according to claim 3, after opening, the sealing member is disengaged from the inner plug nozzle, the sealing member held by the overcap fits into the nozzle portion of the inner plug nozzle, and the inner plug nozzle is re-opened. The easily openable plastic container according to claim 1, wherein the easily-openable plastic container can be sealed.

  The invention according to claim 4 is the easily openable plastic container according to claim 2 or 3, wherein the inner cap nozzle and the overcap have a structure to be screwed together with a threaded portion. It is.

An easily openable plastic container according to the present invention comprises a container body, an inner stopper nozzle, and an overcap. The inner stopper nozzle is fixed to the opening of the container body, and is connected to the thin wall portion and integrally molded. The sealing member has a fitting protrusion, the overcap includes an unauthorized opening prevention band that prevents the overcap from being removed, and a sealing member fitting portion that fits the fitting protrusion. And after removing the tamper-evident prevention band, by moving the overcap downward, the sealing member is pushed by the overcap, dissociates from the thin wall portion, the container is opened, and the sealing member is The cap is held by the overcap by fitting the fitting protrusion and the sealing member fitting portion.
Therefore, because of the function of the tamper-evident band, the overcap cannot be removed unless the tamper-evident band is removed. Remove the overcap, add some action to the contents, and then return the overcap again. There is no room to tolerate misconduct.

  Further, since the container can be opened by a simple operation of moving the overcap downward, it can be easily and safely opened even by a person with weak power.

  Further, the sealing member dissociated from the inner nozzle by the opening operation is held by the overcap by fitting between the fitting protrusion provided on the sealing member and the sealing member fitting portion provided on the overcap. Therefore, the dissociated sealing member can be safely opened without falling into the container.

  Further, in operation, since the hand does not touch the inside of the nozzle, bacteria and the like do not adhere, and it is hygienic.

  The overcap has an inner ring for preventing liquid leakage that fits into the nozzle part of the inner stopper nozzle. After opening, if the inner stopper nozzle can be resealed with the overcap, it is once opened. Since the container can be sealed again with an overcap later, it can be conveniently used for applications where the contents are not used up at once.

  In addition, after opening, if the sealing member that is dissociated from the inner cap nozzle and held by the overcap fits into the nozzle portion of the inner plug nozzle so that the inner plug nozzle can be resealed, Since it is not necessary to remove the sealing member and the sealing member functions as it is for resealing, the usability is further improved.

  If the inner cap nozzle and overcap have a threaded structure, the inner nozzle and the overcap are screwed together at the threaded portion. The overcap is not easily removed, and it can be reliably resealed.

The best mode for carrying out the easily openable plastic container according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective explanatory view showing an embodiment of an easy-open plastic container according to the present invention, and FIG. 2 is a cross-sectional explanatory view of a spout part of the easy-open plastic container shown in FIG.
The left half of FIG. 2 shows an unopened state, and the right half shows a state after opening.

  The easily openable plastic container according to the present invention includes a container body 1, an inner stopper nozzle 2, and an overcap 5, and the inner stopper nozzle 2 is fixed to an opening of the container body 1. As a method for fixing, in addition to the mechanical fitting referred to as driving as shown in FIG. 2, means such as adhesion by an adhesive or fusion by ultrasonic heating can be used.

The inner plug nozzle 2 has a sealing member 4 that is connected and formed integrally with a thin portion 9, and the sealing member 4 has a fitting protrusion 11. On the other hand, the overcap 5 has a tamper-evident prevention band 6 and a sealing member fitting portion 7 fitted to the fitting protrusion 11.
The contents in the container are sealed by the container body 1 and the inner plug nozzle 2.

The overcap 5 is fitted and locked to the container body 1 by the tamper-evident band 6 and cannot be removed from the container body 1 unless the tamper-resistant band 6 is removed. The tamper-evident prevention band here is generally called a tamper-evident seal, extends to the lower side of the overcap 5, and is connected to the overcap body through perforations, grooves, thin wall processing, etc. It can be easily peeled off by hand, but once peeled off, it cannot be restored.
On the inner side of the tamper-evident prevention band 6, there are provided locking projections 12 that fit into the irregularities provided in the container body 1, and are fitted and locked into the container body. Also, a similar locking projection 13 is provided on the lower side of the overcap body, and after the unauthorized opening prevention band 6 is removed, the locking projection 13 is fitted and locked to the container body 1.

As shown in the right half of FIG. 2, after removing the tamper-evident prevention band 6 now, when the overcap 5 is pushed downward, the fitting protrusion 11 provided on the sealing member 4 is provided on the overcap 5. The sealing member fitting portion 7 thus fitted is fitted. As a result of the sealing member 4 being further pushed by the overcap 5, the thin portion 9 is broken and dissociated from the inner plug nozzle 2, and the container is opened. At this time, since the sealing member 4 dissociated from the inner plug nozzle 2 is held by the overcap 5, it does not fall into the container.
At this time, since the inner ring 8 for preventing liquid leakage provided on the overcap 5 is fitted into the nozzle portion 3 of the inner plug nozzle 2, the contents do not leak out.

  When the sealing member 4 held in the overcap 5 is removed, the inner ring for preventing liquid leakage provided in the overcap 5 exhibits a sealing effect on the container after the opening operation is completed. Can be resealed. Therefore, it can be used suitably also in the case of the use which continues using after opening.

FIG. 3 is a cross-sectional explanatory view of a spout portion in another embodiment of an easily openable plastic container according to the present invention, as in the previous figure, the left half is in an unopened state, and the right half is after opening. Indicates the state.
In this embodiment, the inner plug nozzle 2 and the overcap 5 have a structure that is screwed together by the screw portion 10.

In the embodiment shown in FIG. 3, unlike the case of FIG. 2, the fitting protrusion 11 is fitted to the sealing member fitting portion 7 from the unopened state.
Also, after opening, the sealing member 4 held by the overcap 5 is removed, and the overcap 5
By screwing in, the inner ring 8 for preventing liquid leakage works, and it becomes possible to re-seal reliably.
At this time, since the overcap 5 is screwed together with the inner plug nozzle 2 and the threaded portion 10, the overcap 5 is not inadvertently removed even when the container falls and the safety as the container is high.

FIG. 4 is a cross-sectional explanatory view of a spout portion in another embodiment of an easily openable plastic container according to the present invention, and similarly, the left half shows an unopened state, and the right half shows a state after opening. Indicates the state.
In this embodiment, the fitting protrusion 11 of the sealing member 4 is fitted to the sealing member fitting portion 7 of the overcap 5 from the beginning, and after removing the unauthorized opening prevention band 6, the overcap 5 The thin portion 9 of the inner plug nozzle 2 is broken and opened by being pushed downward, but the sealing member 4 is fitted to the nozzle portion 3 of the inner plug nozzle 2 as it is. After opening, the sealing member 4 and the overcap 5 are united to serve as a lid for resealing.
In this embodiment, since it is not necessary to remove the sealing member 4 after the opening operation, it is easy to use as a container.

  In the case where the sealing member 4 is firmly fitted to the sealing member fitting portion 7 of the overcap 5 from the beginning as in the embodiment shown in FIG. After the removal, the overcap can be opened by pulling it upward rather than pushing it downward.

  As the material of the container body, the inner nozzle, and the overcap, a known thermoplastic material such as polyester resin (PET = polyethylene terephthalate) resin, vinyl chloride resin, polyethylene resin, polypropylene resin, polystyrene resin, etc. can be used. These resins can be used alone or in combination. In order to improve the gas barrier property, a barrier layer can be provided on the inner surface or the middle of the container body. As the gas barrier layer, a gas barrier organic material such as ethylene vinyl alcohol copolymer and polyvinylidene chloride, a thin film of metal or metal oxide, or a barrier film in which a plurality of these layers are combined can be provided.

The perspective explanatory view showing one embodiment of the easily openable plastic container concerning the present invention. Sectional explanatory drawing of the spout part of the easily openable plastic container shown in FIG. Sectional explanatory drawing of the spout part in other embodiment of the easily openable plastic container which concerns on this invention. Sectional explanatory drawing of the spout part in other embodiment of the easily openable plastic container which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Container main body 2 ... Inner plug nozzle 3 ... Nozzle part 4 ... Sealing member 5 ... Overcap 6 ... Tamper-resistant band 7 ... Sealing member fitting part 8 ... Inner ring for preventing liquid leakage 9 ... Thin portion 10 ... Screw portion 11 ... Fitting protrusion 12 ... Locking protrusion 13 ... Locking protrusion

Claims (4)

  A plastic container comprising a container body, a stopper nozzle, and an overcap, the stopper nozzle being fixed to the opening of the container body, and having a sealing member that is connected and integrally formed with a thin portion; The sealing member has a fitting protrusion, and the overcap has an unauthorized opening prevention band that prevents the overcap from being removed, and a sealing member fitting portion that fits the fitting protrusion, and the unauthorized opening. After removing the prevention band, by moving the overcap downward, the sealing member is pushed by the overcap, the thin portion is broken and the container is opened, and the sealing member An easily openable plastic container, which is held by an overcap by fitting the sealing member and the sealing member fitting portion.   The overcap has an inner ring for preventing liquid leakage that fits into a nozzle portion of the inner plug nozzle, and the inner cap nozzle can be resealed by the overcap after opening. Item 9. An easily openable plastic container according to Item 1.   After opening, the sealing member that is dissociated from the inner plug nozzle and held by the overcap fits into the nozzle portion of the inner plug nozzle so that the inner plug nozzle can be resealed. The easily openable plastic container according to claim 1.   The easily openable plastic container according to claim 2 or 3, wherein the inner cap nozzle and the overcap have a structure of being screwed together with a threaded portion.

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