JPS6025410Y2 - bottle cap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a bottle cap provided with a chamber for containing a protective agent for preserving the quality of the contents of the bottle.

Conventionally, to prevent food and other bottle contents from absorbing moisture, a small bag containing desiccant pellets was placed inside the bottle.
Things have been done.

Furthermore, recently, the use of oxygen absorbers has been considered for the purpose of preserving the flavor and freshness of fresh foods in bottles.

However, it is necessary to completely prevent the contamination of protective agents such as desiccants and oxygen scavengers into the storage chamber and other contents, and to maintain the activity of these agents for a long time. Containing it in a bottle was a difficult problem to solve.

The present invention solves the above-mentioned problems by creating a state in which it is possible to completely prevent the protective agent from mixing with the contents of the bottle, and also to maintain the activity of the agent for a long time. The present invention provides a bottle cap with a storage chamber for holding a protective agent.

Bottle cap 1 according to the present invention, □ A cap main body 1 having a concave portion formed on the upper surface to form a chamber for accommodating a drug 5 for protecting contents, and a hole 4 for allowing a gas to pass through.
, a small cap 2 that fits into the recess in the sealed state to cover the gas passage hole 4 and block the protective agent 5 from the outside air; a cap body 1 that covers the gas passage hole 4 in the sealed state; It consists of a gas permeable sheet filter 3 held between a small cap 2 and a gas permeable sheet filter 3.

The concave portion forming the protective drug storage chamber is arranged in an annular shape, and an annular inner circumferential wall 10 and an annular outer circumferential wall 11 are protruded from the lower part of the outer periphery of the small cap 2, and the annular inner and outer circumferential walls 1
0 and 11 can be closely fitted into the inner circumferential surface of the annular recess, and furthermore, the annular inner and outer circumferential walls 10 and 1 of the small cap 2
By providing a protrusion 8 or a groove on at least one side of 1, and providing a groove or a protrusion that fits with the protrusion 8 or groove on the inner circumferential wall of the recess forming the protective drug storage chamber, the small The cap 2 can be temporarily held on the cap body, and in the temporary holding position, the annular inner and outer circumferential walls of the small cap 2 are brought into close contact with the inner circumferential wall of the recess, so that the protective drug storage chamber is kept free from outside air and It is configured to be able to be shut off from both of the internal space of the bottle.

Hereinafter, the bottle cap according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 and FIG. 2 are a partially sectional front view and a top view, respectively, showing the bottle cap in a sealed state.

An annular recess forming a chamber for accommodating a protective agent 5 is formed on the upper surface of the main body 1 of the bottle cap, and a hole 4 through which a gas passes is bored.

A small cap 2 is fitted into the annular recess of the cap body 1, and a gas permeable sheet filter 6 is sandwiched between the cap body 1 and the small cap 2.

Although the gas passage holes 4 are not visible from the outside in the sealed state, the four gas passage holes 4 are shown in dotted lines in FIG. 2 for ease of understanding.

3 and 4 are a partial front view and a bottom view, respectively, in partial cross section, of the small cap 2 fitted into the annular recess of the cap body 1. FIG.

A cross-shaped groove 6 is bored in the lower surface of the small cap 2.

In order to fit the small cap 2 into the annular recess of the cap body 1, an outer circumferential wall 11 and an inner circumferential wall 10 are provided at the lower part of the outer circumference of the small cap 2, and a snap-fastening protrusion 8 is provided on the outer circumferential surface of the outer circumferential wall 11. It is installed protrudingly.

In the sealed state, the protrusion 8 fits into a groove bored at a predetermined position on the inner circumferential wall surface of the annular recess of the cap body 1, as shown in FIG. 1, and performs a snap-locking action.

Further, the outer peripheral wall 11 at the lower part of the outer periphery of the small cap 2 is in close contact with the inner peripheral surface of the annular recess, and blocks the protective agent from the outside air to prevent the agent from being contaminated.

The top surface of the small cap 2 and the cap body 1 in the sealed state
It is desirable to form the same plane as the upper surface of.

This is to prevent the small cap 2 from easily separating from the cap body 1 due to external force.

The outer ends of the radially extending wings of the cross-shaped groove 6 formed on the lower surface of the small cap 2 are connected to the grooves 7 formed on the inner circumferential wall 10.

In the sealed state, as shown in FIG.
The drug in the protective drug storage chamber formed by the small cap 2 and the outer peripheral wall 11 is blocked from contact with the outside air.

In addition, the gas inside the bottle is passed through a passage hole 4 formed on the top surface of the cap body 1, a gas permeable filter 3, a groove 6 formed on the bottom surface of the cap body 1, and an inner circumferential wall 10 of the small cap 2.
It is possible to penetrate into the drug storage chamber through the groove 7 drilled in the .

The gas permeable filter 3 is a thin sheet-like filter that can permeate gases such as oxygen and water vapor, but preferably does not permeate liquids.

Liquid-impermeable materials can be particularly effectively used for preserving liquid foods.

Such preferred gas permeable liquid impermeable filters include, for example, those sold under the trade name Duracard.

Although not shown in FIG. 1, the outer circumferential edge of the filter 6 is bent and the bent portion is connected to the inner circumferential wall 10 at the lower outer circumference of the small cap 2 and the inner circumferential shoulder of the annular recess of the cap body 1. It is desirable to sandwich it between the

Alternatively, the filter 3 may be adhered or welded to the upper surface of the cap body 1 or the lower surface of the small cap 2.

The gas permeable filter 3 not only allows the gas inside the bottle to pass through, but also has the function of preventing the protective agent 5 from getting mixed into the bottle.

Before pushing the peripheral walls 10 and 11 at the lower outer periphery of the small cap 2 into the annular recess of the cap body 1 to form a sealed state as shown in FIG. 1, the small cap 2 is temporarily held on the upper surface of the cap body 1. be able to.

The dashed line in FIG. 1 represents the outline of the small cap in the temporarily held state.

Such temporary holding is achieved by fitting and snapping the protrusion 8 on the outer peripheral wall 11 at the lower part of the outer periphery of the small cap 2 into a groove 9 formed in the inner peripheral surface of the annular recess.

In the temporarily held state, not only the outer circumferential surface of the outer circumferential wall 11 at the lower outer circumference of the small cap 2 is in close contact with the upper inner circumferential surface of the annular recess, but also the lower inner circumferential surface of the inner circumferential wall 10 of the small cap 2 is in an annular shape. It comes into close contact with the upper part of the inner peripheral surface of the recess.

That is, the lower end of the gas passage formed by the groove 7 bored on the inner circumferential wall 10 of the small cap 2 is closed.

In other words, in the temporary holding state, the protective drug 5 in the drug storage chamber is not only cut off from the outside air but also cut off from the gas inside the bottle.

As a result, the activity of the protective agent is not reduced during shipping, transportation, storage, etc. of the bottle cap 1 before filling the bottle with food or other contents.

The small cap 2 in the temporarily held state may be pressed against the cap body in the step of sealing the cap body 1 after filling the bottle with food or the like.

In FIG. 1, reference numeral 12 is a flexible annular thin protrusion protruding from the lower surface of the cap body 1, and in the sealed state, it comes into close contact with the top end surface of the opening to completely form a seal. .

Although a preferred specific example of the present invention has been described above, various changes and modifications can be made to the above embodiment without departing from the spirit of the present invention.

For example, the recess provided on the upper surface of the cap body 1 may be circular or polygonal, and one or two small-volume recesses may be provided.
The above-mentioned parts may be divided and arranged on the cap main body 1.

Further, the number of gas passage holes 4 is also arbitrary, and may be one large hole.

As protective agents, silica gel and other desiccant agents are used for foods and other contents that need to be kept dry, and silica gel and other desiccant agents are used for foods and other contents that need to be kept dry. An oxygen scavenger made of an easily oxidizable metal or compound is used.

In particular, oxygen scavengers are effective in preserving not only the freshness but also the flavor of fresh foods such as shiitake mushrooms and raw sea urchins.

Conventionally, after filling a bottle with food or other substances that do not tolerate the coexistence of water vapor or oxygen, the upper space inside the bottle may be replaced with an inert gas such as nitrogen gas before sealing the bottle. It was impossible to completely eliminate oxygen, etc.

The cap 1 according to the present invention can not only completely remove water vapor and oxygen inside the bottle, but also remove water vapor and oxygen dissolved in the liquid contents or generated from the contents.

The protective agent can be placed in the storage chamber in any form such as powder, granules, or pellets.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing a specific example of the bottle cap according to the present invention, FIG. 2 is a top view of the bottle cap shown in FIG. 1, and FIG. 3 is a top view of the bottle cap shown in FIG. FIG.
It is a bottom view of the small cap shown in a figure. Reference numbers are as below. 1... Cap body, 2... Small cap, 3... Gas permeable filter, 4...
... Gas body passage hole, 5... Content protection agent, 6... Gas body passage groove, 7... Gas body passage groove, 8.・・・・・・Protrusion for snap stop, 9
... Snap groove, 10 ... Annular inner peripheral wall, 11 ... Annular outer peripheral wall, 12 ...
...A circular thin convex strip.

Claims (1)

[Claims for Utility Model Registration] 1. A cap body 1 having a concave portion formed on its upper surface to form a chamber for accommodating a content protection agent 5 and a hole 4 for passing and closing a gas, and a sealing plug. A small cap 2 that fits into the recess in the above-mentioned state and covers the gas body passage hole 4 and blocks the protective agent 5 from the outside air; Gas permeable sheet sandwiched between 1 and small cap 2
A bottle cap consisting of a toroidal filter 3, in which a concave portion forming a protective drug storage chamber is arranged in an annular shape, and an annular inner circumferential wall 10 and an annular outer circumferential wall 11 are protruded at the lower part of the outer periphery of the small cap 2. The annular inner and outer circumferential walls 10,
and 11 can be closely fitted into the inner peripheral surface of the annular recess,
Further, the annular inner and outer circumferential walls 10 and 11 of the small cap 2
A protrusion 8 or groove is provided on at least one side of the protective drug storage chamber, and a groove or protrusion that fits with the protrusion 8 or groove is provided on the inner circumferential wall of the recess forming the protective drug storage chamber. The cap 2 can be temporarily held on the cap main body, and in the temporary holding position, the annular inner and outer circumferential walls of the small cap 2 are brought into close contact with the inner circumferential wall of the recess, so that the protective drug storage chamber is isolated from the outside air and the internal space of the bottle. A bottle cap that is characterized by being able to be shut off from both. 2 At least one gas passage groove extending radially along the lower surface of the small cap from a position on the lower surface of the small cap 2 corresponding to the gas passage hole 4 of the cap body 1 and reaching the vicinity of the protective drug storage chamber. 6 and 7 are perforated on the lower surface of the small cap as claimed in claim 1.