JPS644692Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an inner lid for a container that closes a container opening in combination with an outer lid, and more particularly to an inner lid for a container that can eliminate oxygen gas in the air within the container.

Conventional inner lids for airtight containers are generally made of a single molded product made of soft synthetic resin, and are configured to fit over the open end of the container to seal the inside of the container. Further, when it is necessary to keep the air inside the container dry, a desiccant is separately stored in the container. Therefore, there were problems such as the contents in the container and the desiccant coming together, which became an obstacle when storing and taking out the contents, and it was necessary to take measures to separate the desiccant from the contents.

Further, the present applicant previously disclosed in Japanese Utility Model Application Publication No. 114501/1987 a cross-sectional shape of approximately U, which has an annular seal portion that fits in the inner periphery of the open end of the container in a press-contact state and a disc portion that closes the tip of the annular seal portion. A letter-shaped inner cover is attached to the outer cover so as to form a storage space for desiccant, etc. between the inside of the inner cover and the deep bottom of the outer cover, and a ventilation hole is provided in the disc part. is suggesting. However, in this case, the desiccant is stored in the space between the inner lid and the outer lid, so the desiccant and the contents do not come together, but the inside of the container is the same as the ventilation hole and the inner lid. It can be inserted into the outside through the storage space and the gap between the inner cover and the bottom surface of the outer cover. Therefore, unless the outer lid is strongly tightened, it is impossible to ensure sealing of the gap between the inner lid and the bottom surface of the outer lid, and there is a problem in that it is difficult to ensure high sealing performance inside the container.

On the other hand, by storing an oxygen absorber inside a bag-shaped container made of a sheet with high gas barrier properties, it eliminates oxygen gas from the air inside, prevents deterioration of the contents, and maintains freshness. Some are designed to hold for a long time, some have an oxygen absorbing material attached to the lid made of a single member (see Japanese Utility Model Application Publication No. 130554/1983), and some have a holder attached to the lid or a deoxidizer in the storage space. A device that retains the material (see Japanese Utility Model Application Publication No. 161858/1983) is known.

However, depending on these configurations, and even if the disclosed means are simply combined, when the opening of the container body is closed with a lid, if the opening of the container body is not completely closed to prevent gas leakage, the inside of the container may be exposed. Since oxygen in the air cannot be removed with an oxygen absorber, even if the opening of the container is closed with a lid equipped with an oxygen absorber, sufficient reliability regarding the anoxic state inside the container cannot be obtained. It was hot.

In view of the above conventional problems, the present invention aims to provide an inner lid for a container that can be used in combination with an outer lid to reliably deoxidize the inside of the container simply by fitting into the opening of the container. This is the purpose.

An embodiment of the present invention will be described below based on the drawings.

In the figure, 1 is a container, 2 is its opening, 3 is a right-handed outer cover screw screwed on the inner periphery of the upper end of the opening 2, and 4 is a right-handed outer cover screw screwed into the outer cover screw 3 to open the opening 2. It is an outer lid that closes the Reference numeral 5 denotes an extraction port formed below the outer lid screw 2 of the opening 2 of the container 1 by penetrating the peripheral wall, and 6 indicates a seal formed at a lower position of the extraction port and protruding to the inner periphery of the container opening 2. It is the seat. An inner cover 7 is removably attached to the inner periphery of the outer cover 4 by engagement. The inner lid 7 includes an annular main body 10 having a seal portion 8 formed on the outer periphery of one end and a flange portion 9 for attachment formed on the outer periphery of the other end, which fits inside the seal seat surface 6 in a press-contact state,
In the illustrated example, the main body 10 is connected at one end by a connecting plate portion 12 formed with a ventilation hole 11, and solid or liquid is not allowed to pass through the outer surface of the connecting plate portion 12.
A membrane-like member 13 that allows gas to pass through is attached. This member 13 may be made of a plastic sheet having minute gas passage holes, a nonwoven sheet, cloth, or the like, and if liquid impermeability is required, it may be waterproofed. On the other hand, the other end of the main body 10 is a membrane-like member 1 having gas barrier properties.
4, and the member 13 and this member 1
An oxygen scavenger 15 is filled or housed in a space surrounded by the main body 10 and the main body 10. A threaded groove 16 or an inclined groove whose twist direction is to the left is formed on the outer periphery of the flange portion 9, and a protrusion 17 or a screw that engages with this threaded groove 16 is protrudingly provided on the inner periphery of the deep part of the outer cover 4. There is.

In the above configuration, when the inner cover 7 is inserted into the outer cover 4 and turned counterclockwise, the outer periphery of the flange portion 9 at the other end of the inner cover and the inner periphery of the inner bottom of the outer cover are engaged with the left-hand thread, and the two are integrated into one lid. combined as Place this lid on opening 2 of container 1.
When the lid is inserted into the opening 2 and rotated clockwise, the lid is screwed into the opening 2 due to the right-handed screw engagement between the screw on the outer periphery of the outer lid 4 and the outer lid screw 3 of the opening 2, and the seal portion 8 of the inner lid 7 is closed. It fits into the seal seat surface 6 at the bottom of the container opening 2 in a press-contact state, and the space between the inner periphery of the container opening 2 and the outer periphery of the inner lid 7 is completely sealed. The space inside the container 1 communicates with the space inside the inner lid 7 via a membrane-like member 13 that allows gas to pass through and a ventilation hole 11 in the connecting plate section 12.
The air inside the container 1 is deoxidized by the oxygen absorber 15 in the space. Further, since the space within the inner lid 7 is closed by a membrane member 14 having gas barrier properties at the other end of the inner lid body 10, it is completely sealed from the outside of the container 1. Thus,
The inside of the container 1 is completely sealed from the outside, and the oxygen in the air inside the container is absorbed by the oxygen absorber 1 in the inner lid 7.
5, the contents contained in the container 1 are prevented from deteriorating in quality, and their freshness is maintained for a long period of time.

When taking out the contents in the container 1 from the extraction port 5, turn the outer cover 4 to the left. Since the inner cover 7 is threaded to the left with the outer cover 4, it will rise while rotating together with the outer cover 4. Then, the seal portion 8 is the seal seat surface 6
The inside of the container 1 is communicated with the outside through the extraction port 5, and the contents can be freely taken out. When use is finished, the outer cover 4 is rotated clockwise again to bring it into a sealed state as described above. In addition, when removing the entire lid from the container opening 2, remove the outer lid 4 from the outer lid screw 3.
If the inner cover 7 is to be replaced due to wear and tear on the seal part 8 or depletion of the oxygen absorber 15, remove the entire cover in this way and then unthread the outer cover 4. It can be easily removed by rotating the inner cover 7 clockwise, and a new inner cover 7 can be attached to the outer cover 4 as described above. In addition, the inner lid 7
Since one end of the main body 10 of the container 1 is fixed or closed with a member 13 that does not allow the passage of liquid but allows the passage of gas, the article to be stored in the container 1 can be either solid or liquid depending on the type. can be dealt with arbitrarily.

In the above embodiments, a container having an extraction port was shown, but it is clear that the present invention can also be applied to an ordinary closed container without an extraction port.

According to the inner lid of the container of the present invention, as is clear from the above explanation, by fitting the inner lid into the opening of the container, the diameter of the seal portion on the outer periphery of the annular main body is reduced, and the repulsive force is large. Since the inner periphery of the container opening and the outer periphery of the annular body are reliably sealed by the sealing surface pressure, and one end of the annular body is closed with a gas barrier member, the inside of the container is completely sealed from the outside. Oxygen gas in the air within the container can be removed through the gas-permeable member at the other end of the annular body by means of the oxygen scavenger housed in the inner lid in a sealed state.

Therefore, by simply fitting the inner lid according to the present invention to the inner periphery of the opening of the container, the inside of the container can be reliably deoxidized to prevent the contents from deteriorating and maintain their freshness over a long period of time. This is possible.

Moreover, the oxygen scavenger inside the inner lid does not come into direct contact with the contents inside the container, so that not only its function is not impaired, but also there is no adverse effect on the contents.

Furthermore, since it is configured as an inner lid separate from the outer lid, it can be manufactured separately from the container body and the outer lid using a different manufacturing route as a lid component containing a built-in oxygen absorber, and it can also be used as a gas permeable member. By sealing the inner lid, it is also possible to use this inner lid as a storage container for the oxygen absorber until it is applied to the container, and then when closing the opening of the container. By combining the inner lid with the outer lid, a lid equipped with an oxygen absorber can be easily obtained.
The present invention has many advantages, such as the fact that the interior of the container can be reliably deoxidized by simply fitting the inner lid into the opening of the container as described above.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall longitudinal sectional view when applied to an extractable closed container;
FIG. 2 is a partially sectional front view of the inner lid. 1... Container, 2... Opening, 3... Outer lid screw,
4...Outer lid, 5...Extraction port, 6...Seal seat,
7... Inner lid, 8... Seal portion, 9... Flange portion, 10... Annular main body, 11... Ventilation hole, 12...
...Connection plate part, 13...Member that allows gas to pass, 1
4...Gas barrier member, 15...Treatment agent, 1
6...screw groove, 17...protrusion.

Claims (1)

[Scope of utility model registration request] An inner lid of a container that is attached to the deep bottom of the outer lid and is combined with the outer lid to close the opening of the container. A sealing portion that comes into pressure contact is provided, one end of the annular body is closed with a member having gas barrier properties, and the other end of the annular body is closed with a member that allows the passage of gas but blocks the passage of solids or liquids, and the annular body An inner lid of a container, characterized in that an oxygen scavenger is housed in a space surrounded by a gas barrier member and a member that allows gas to pass through.