JPH076118Y2 - Oxygen absorber container for cap - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a container for a cap used by enclosing an oxygen absorber. More specifically, in the oxygen absorber storage body to be mounted on the inner surface of the cap of the container, the oxygen absorber storage for a cap is provided on the outer surface of the lower surface of the cup-shaped body, which is a breathable sheet that does not pass liquid. Regarding the body

Alcoholic beverages, soy sauce, juices, nutritional drinks, photographic developers, etc. contain microbial nutrients and reducing substances, and since oxygen is present in the air, decay or deterioration by microorganisms, This may cause discoloration or deterioration of function due to oxidation of the reducing substance. Although these phenomena can be prevented by removing oxygen in the system, the present invention proposes a cap container in which a deoxidizer for storing various substances, especially liquid or semi-liquid substances, is enclosed. It is about.

[Conventional technology]

Conventionally, for example, the following method is known for storing various liquid substances including foods.

For alcoholic beverages, the temperature has been raised to 70-80 ° C before filling the container with sake, and the effect has been enhanced by the method of killing microorganisms (burning). However, this method has a drawback that the taste of sake is changed.

For the storage of liquid or semi-liquid foodstuffs and other substances, a method of substituting the air in a closed container with nitrogen has been adopted, but it has a drawback that oxygen that permeates from the wall surface of the container cannot be removed. For cost reasons, 0.
It was difficult to reduce the oxygen concentration to less than 1%, and the storage effect by this method was practically limited.

Although a method of adding a preservative to a liquid has been adopted, in this method, the taste is altered or various effects on human health are discussed in terms of safety and health.

Under these circumstances, a method of putting a food in a sealed container and applying an oxygen scavenger has recently attracted attention as the most effective method of storing food. However, conventional oxygen absorbers are used by filling powder that reacts with oxygen into a small bag made of breathable packaging material such as paper or non-woven fabric. When applied to a container containing the above substance, there were the following problems.

(1) In some cases, some of the components in the oxygen scavenger may be eluted into the liquid or semi-liquid for storage, causing the substance to be preserved to be colored, or to cause changes in taste or odor. there were.

(2) The packaging material filled with the oxygen scavenger may become wet with the liquid or semi-liquid substance, and oxygen absorption may stop.

(3) It was often difficult to put an oxygen absorber in a small space.

By the way, as the most effective storage method for storing liquid foods, an example is disclosed in which foods are placed in a sealed bottle container and an oxygen absorber is loaded into a cap.

For example, in Japanese Utility Model Laid-Open No. 55-161858 and Japanese Utility Model Laid-Open No. 56-38056, an oxygen scavenger is enclosed in a breathable and water-resistant bag or molded container, and then the bag or molded container is attached to a cap. It is disclosed that a holding portion that is stored in a storage chamber or attached to a cap is fixed by being fitted. In the caps disclosed in these publications, a part of the oxygen absorber storage container has micropores and is composed of a gas-permeable sheet that does not allow water to pass under normal pressure. It has better water resistance than packaging bags.

However, in these caps, when the gas permeable sheet is in contact with the oxygen scavenger and the oxygen absorber oxidizes and solidifies under high humidity, it will stick to the gas permeable sheet, and the oxygen scavenger will be attached. There was a case where the liquid component generated when oxidizes and absorbs moisture exudes through the sheet. In particular, when the entire liquid container tilts or vibrates, the oxygen absorber storage container moves in the storage chamber attached to the cap, collides with the wall of the storage chamber, and tilts or falls. In some cases, the sheet was scratched or the oxygen absorber was fixed to the sheet, causing the above-mentioned seepage phenomenon.

In addition, these caps have small holes in the lower part of the storage chamber that come into contact with liquid foods, so when the container vibrates, the liquid surface shakes and the liquid easily splashes into the oxygen absorber storage chamber, causing the liquid to form small holes. Occasionally, the liquid may be clogged or the stain may come into contact with the liquid and contaminate the liquid.

Furthermore, in the case of the type that fits the storage chamber into the holder attached to the cap, the liquid surface shakes and the liquid easily gets into the storage chamber, and when the storage chamber is put into the holder, the storage chamber deforms and the sheet There is also a drawback that the water resistance decreases, such as strain and scratches. Further, since this cap has a structure in which two or more parts are loaded in the cap, it has a drawback that it is complicated and difficult in processing.

[Problems to be solved by the device]

In view of the above-mentioned problems of the prior art, an object of the present invention is to effectively deoxygenate the inside of a container, to have no difficulty in processing, and to store the components of the oxygen scavenger, such as a liquid. Alternatively, it is necessary not to transfer to a semi-liquid substance.

[Means for Solving the Problems]

Means for solving the above problems, in the oxygen absorber storage body mounted on the inner surface of the cap of the container, the central portion of the lower surface of the cup-shaped body is curved inward from the peripheral portion, and a single or That is, a sheet having a plurality of small holes and having air permeability and liquid impermeable is disposed on the outer side of the lower surface of the cup-shaped main body, and only the peripheral portion thereof is fixed.

In the above-mentioned solution means, the oxygen absorber storage body is designed to fulfill its function by utilizing, in particular, the outer shape of a conventional stopper for a sake bottle or a screw cap. The oxygen absorber container is attached or fitted to the inner surface of the cap of the container.

The oxygen absorber storage body includes a cup-shaped main body, a breathable sheet that does not allow liquid to pass therethrough, and a gas barrier lid sheet that is optionally provided.

The cup-shaped main body has a cup-shaped shape capable of containing an oxygen scavenger in its internal space, and includes, for example, one or more of polyolefins such as polyethylene and polypropylene, polyester, polyvinyl chloride, polystyrene and the like. A plastic material is preferably used. In addition, it is also a preferred embodiment to add a lubricant such as fatty acid amide in order to improve the plug opening property. When the cup-shaped body is formed of these plastic materials, it is manufactured, for example, by injection molding.

The lower surface, which is the bottom of the cup-shaped main body, has a structure in which the central portion is curved inward (toward the inner space of the cup). Further, the curved portion is provided with a single hole or a plurality of small holes for allowing ventilation between the inside of the cup-shaped body and the inside of the container body. The diameter of the small hole is preferably in the range of 0.5-5 mm, 0.5
A range of up to 3 mm is particularly preferred.

A sheet that is breathable and liquid-impermeable on the outer side of the lower surface of the cup-shaped body (on the side of the container body) (hereinafter, a “breathable sheet that is impermeable to liquid” may be simply referred to as a “sheet”). ) Is arranged. The sheet is fixed integrally with the cup-shaped body by a seal only on the peripheral edge, preferably by heat sealing. In this case, the diameter of the inner edge of the seal at the peripheral edge to be sealed is preferably 8 mm or more, more preferably 12 mm or more.

A sheet that is breathable and impermeable to liquids has an air permeability of 1.
000ml / m ² · D · atm or more is used, 10,000ml / m ²
・ D / atm or more is preferable. This sheet is water impermeable at least at atmospheric pressure, preferably 0.1 kg / cm
² or more, more preferably leaving those have the property impervious to water at 0.3 kg / cm ² or more pressure. This sheet, for example,
Polyethylene, polyolefin such as polypropylene, fluororesin such as polyfluorinated ethylene, cold stretching of a film of synthetic resin exemplified by polyvinyl chloride, stretching of the above film containing foreign matter, from the above film containing foreign matter Stretching after extraction of foreign matter, hot pressing after cross-dispersion of a bundle of fibers of the synthetic resin, irradiation of the film with an electron beam or the like, hot pressing after papermaking of the fibers of the synthetic resin in liquid, embossing on the film Obtained by processing. In order to further improve water and oil resistance, it is also preferable that these sheets are surface-coated and / or impregnated with silicon resin, silicon acrylic resin polyfluorocarbon, or the like.

Furthermore, it is also a preferable embodiment to laminate a heat-softening non-woven fabric such as polyethylene or polypropylene or a perforated film on these sheets in consideration of the adhesiveness to the cup-shaped body.

Specific examples of commercially available sheet products include Jura Guard (made by Celanese Co., Ltd.) and NF sheet (Tokuyama Soda Co., Ltd.).
Made), Tyvek (made by Jupon, Inc.), Alto (made by Awa Paper Co., Ltd.), Gore-Tex (made by Gore, Inc.), NTF
(Manufactured by Nitto Denko Co., Ltd.) and the like, or processed products and processed products thereof.

In addition, the cap oxygen absorber container of the present invention is sealed with a gas barrier sheet at the top opening of the cup-shaped body so that the cap-shaped body can maintain airtightness even if the adhesion with the cap body is defective. It is desirable that the structure is cut off. The oxygen permeability of this gas barrier sheet is 100 ml /
m ² · D · atm or less is preferable, and 50 ml / m ² · D · atm or less is particularly preferable. For example, sheets or films of nylon, polyester, polypropylene, polyethylene, polyvinyl chloride, etc., and low foams thereof, and further,
A sheet coated with polyvinylidene chloride, and /
Alternatively, an aluminum foil, an aluminum vapor-deposited sheet or film, or the like is used. Further, it is also a preferable embodiment that these sheets are laminated with other sheets such as paper for the purpose of preventing curling or the like in order to facilitate the process of bonding to the cup-shaped main body.

As the oxygen absorber stored in the inner space of the cup-shaped body, metal powders such as iron powder, ferrous salts such as ferrous sulfate and ferrous chloride, and reducing agents such as dithionite Those containing a sulfur compound, ascorbic acid and / or a salt thereof, erythorbic acid and / or a salt thereof, catechol, a reducing organic compound such as hydroquinone, and the like as a main agent are used. Among these, an oxygen absorber using iron powder, ascorbic acid and / or a salt thereof, erythorbic acid and / or a salt thereof as a main agent is particularly preferable.

As the shape of the oxygen scavenger, for example, a granular, spherical, or tablet-shaped material, or a material in which these are housed in a breathable container such as a blister package is used. The size of the oxygen scavenger needs to be larger than the size of the hole provided in the lower curved portion of the cup-shaped body. In particular, a tablet made of an oxygen absorber is preferable in terms of ease of manufacturing the cap of the present invention.

[Action]

 The above solution works as follows.

In the present invention, since the central portion of the lower surface of the cup-shaped body is curved inward from the peripheral portion, even if the liquid substance to be stored is applied to the sheet fixed only at the peripheral portion due to vibration of the container, etc. No substance penetrates through the sheet into the cup body.

On the other hand, if the lower surface of the cup-shaped main body is not curved, the lower surface of the cup-shaped main body and the sheet come into contact with each other. Since it may permeate into the inside of the sheet-like body and impair the air permeability of the sheet, it is not preferable.

In addition, when the oxygen absorber container of the present invention is applied to a container and used to prevent alteration of a liquid or semi-liquid substance, the liquid soluble component generated when the oxygen absorber absorbs oxygen should be stored or There is no transfer of semi-liquid substances to the product side.
Furthermore, since the oxygen absorber is stored inside the cup-shaped body that is the hollow portion of the oxygen absorber storage body, the oxygen absorber and the sheet are formed by the lower surface of the cup-shaped body and the curved surface of the lower surface of the cup-shaped body. Since the oxygen absorber is separated from the space, the oxygen absorber does not come into contact with the sheet, and therefore, the oxidative solidification of the oxygen absorber does not adversely affect the sheet.

〔Example〕

 The drawing illustrates the oxygen absorber storage body.

FIG. 1 shows the case where the screw cap 10 is applied.
A central portion A of the lower surface of the cup-shaped main body 20 formed of plastic is curved into the cup, and a breathable sheet 6 that is impermeable to liquid is arranged outside the lower surface of the cup-shaped main body 20. The lower surface of the cup-shaped main body 20 and the sheet 6 are fixed by heat sealing only on the peripheral edge of the sheet 6. Cup-shaped body
A gas barrier lid sheet 5 is provided in the upper opening of 20 and is fixed by a seal with the upper edge of the cup-shaped body 20. The oxygen absorber container is mounted (fitted) on the inner surface of the screw cap 10.

When a liquid was stored using this cap for mounting the oxygen absorber, oxygen inside the container body was absorbed properly, and no oxygen absorber component exuded to the sheet.

FIG. 2 shows a case where the stopper 11 is applied, and the cup-shaped body 21
Is the same as that of the screw cap.

[Effect of device]

When the oxygen absorber container of the present invention is applied to a container and used to prevent alteration of a liquid or semi-liquid substance, the liquid or semi-liquid component of the liquid soluble component generated when the oxygen absorber absorbs oxygen should be stored. Since the transfer to the substance side is prevented, the material to be stored in the container is not contaminated at all, and the oxygen is effectively deoxidized and the liquid quality is preferably maintained. Further, the oxygen absorber is
Since it does not come into contact with the sheet, there is no adverse effect on the sheet due to oxidative solidification of the oxygen scavenger.

The object to be preserved according to the present invention is not particularly limited to a liquid, and can be suitably used for all slurry, jelly, sol or solid having high water activity.

Further, the container of the present invention contains oxygen absorber, is applied to a cap, and is particularly preferably used, but a desiccant container, a deodorant container, an aromatic agent container, an insect repellent container, etc. It can also be diverted as.

[Brief description of drawings]

The drawing is a cross-sectional view of one embodiment of the oxygen absorber container mounted on the inner surface of the cap. FIG. 1 shows an example applied to a screw cap, and FIG. 2 shows an example applied to a stopper. In the drawing, 10 and 11 are caps, 20 and 21 are cup-shaped bodies, 3 is an oxygen scavenger, 40 and 41 are mouths of containers,
Reference numeral 5 is a gas barrier lid sheet, 6 is a breathable sheet that does not allow passage of liquid, 7 is a small hole, and A is a curved portion.

Claims (4)

[Scope of utility model registration request] 1. An oxygen absorber container to be mounted on the inner surface of a cap of a container, wherein the central portion of the lower surface of the cup-shaped main body is curved inward from the peripheral portion, and the curved portion has a single or a plurality of curved portions. An oxygen scavenger container for a cap, which is provided with a sheet having small holes, which is breathable and liquid-impermeable, and is arranged on the outer side of the lower surface of the cup-shaped main body, and only the peripheral portion is fixed. 2. The oxygen absorber for cap according to claim 1, wherein the oxygen absorber is contained in the hollow cup-shaped main body of the oxygen absorber container. 3. The oxygen absorber storage body for a cap according to claim 1, wherein the upper end of the cup-shaped body is sealed with a lid made of a gas barrier sheet. 4. A cap having an oxygen absorber container according to any one of claims 1 to 3 mounted on its inner surface.