JP2015048091A - Cap for container and container having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container which inhibits oxidation of a liquid content after the container is opened, prevents cost increase of a material used in the container, and enables an existing facility to fill the container with the liquid content.SOLUTION: A non-return valve, which blocks reverse flow of a liquid content and intrusion of outer air, and an outer air inflow passage, into which outer air flows, are provided in a cap body of a container. Further, an outer air separation bag is connected with an end part of the outer air inflow passage. The structure prevents the outer air flowing into the container from contacting with the content.

Description

  The present invention relates to a container cap and a container having the cap, and in particular, in a container containing a liquid material such as soy sauce, other liquid seasonings, and salad oil, the outside air flowing after opening is blocked from the contents. The present invention relates to a cap for a liquid material storage container that suppresses quality deterioration such as oxidation and fragrance scattering, and also takes into account the use of existing containers.

Containers containing liquid materials such as soy sauce, other liquid seasonings, and salad oil are used for a considerable period of time after opening, for example, one month or more, but normal containers are containers that are used after opening. Since inflow of outside air occurs inside, after opening, quality deterioration such as oxidation and fragrance scattering due to inflow of outside air is inevitable.
Thus, various proposals have been made for containers that can suppress the oxidation of the liquid contents, fragrance scattering, etc. even after opening.

For example, Patent Documents 1 and 2 disclose a flexible container provided with a liquid spout having a function to check outside air into the container.
The flexible containers disclosed in these patent documents are used for filling a liquid material. A characteristic of these containers is that even if a liquid material as the contents is poured out from the container main body, an inflow of outside air does not occur because it has a check function. Accordingly, the contents are advantageous in that quality deterioration due to oxidation, fragrance scattering, etc. is suppressed and high quality can be maintained even after opening. In addition, in order to pour out the contents, the weight of the liquid or by applying pressure to the bag.

  However, the containers disclosed in Patent Documents 1 and 2 are made of a flexible package in order to exert the check function, and are difficult to stand by themselves, and require an external structure to support this. There is a problem. Moreover, the container filled with the liquid material is required to have flexibility, which means that the thickness is thin. Normally, when the thickness is reduced, oxygen in the outside air can easily permeate into the container, but in order to ensure a shelf life equivalent to that of conventional containers made of hard polyethylene terephthalate, etc. It is necessary to have an oxygen permeation preventing function equivalent to or higher than that of terephthalate or the like, and there is a problem that cost increases cannot be avoided due to such high demands.

On the other hand, in Patent Document 3, a non-self-supporting liquid-filled packaging body having a liquid discharge port having a check function and a hard plastic or paper self-supporting outer container that accommodates and holds the same is disclosed. What has been proposed.
Further, Patent Document 4 proposes a discharge container having a structure in which a discharge cap is mounted on a double-structure container, and the double container in the container has a squeeze-deformable and recoverable body. A flexible inner layer (inner container) is detachably laminated on the inner peripheral surface of the outer layer (outer container), and when the body of the double container is squeezed, the inner layer is deformed and deformed together with the outer layer, When the squeeze deformation is released, the body of the outer layer is restored and deformed.At this time, the inner layer is sealed, so that the volume reduction shape of the inner layer is maintained, and the internal pressure of the interlayer space formed between the inner layer and the outer layer is reduced. The pressure is reduced, the outside air is sucked, and the outside air flows into the interlayer space through the outside air inflow path. The inner layer contracts as the contents decrease, so that the storage stability of the liquid contents can be improved.

  However, since these containers are completely different in structure from existing containers, the existing containers cannot be used, and special filling equipment is required when sealing with filling liquid contents. There is a problem.

JP 2005-15029 A JP 2006-315701 A JP 2011-219115 A JP 2011-230843 A

  The present invention has been made in view of such a situation, and in a container that can suppress the oxidation of the liquid content even after opening, while avoiding the cost increase of the material to be used, the liquid content using the existing container and existing equipment An object of the present invention is to provide a container capable of filling an object.

  As a result of intensive studies to solve the above problems, the present inventor has provided an outside air inflow passage through which the outside air flows into the inside of the cap body of the container, and connects an outside air isolation bag to the end of the outside air inflow passage. As a result, it was found that the outside air flowing into the container can be prevented from coming into contact with the contents.

The present invention has been completed based on this finding. According to the present invention, the following inventions are provided.
[1] A cap attached to the mouth of the container,
A cylindrical cap body having an opening for dispensing liquid contents contained in a container at the upper center, and a lid that covers the opening,
Inside the cap body, there is a check valve that prevents backflow of liquid contents and the entry of outside air, and an outside air inflow path through which outside air flows,
A cap, characterized in that an outside air isolation bag is connected to an end of the outside air inflow path and has flexibility that can be deformed as the outside air flows into the inside.
[2] The cap according to [1], wherein the outside air inflow passage communicates with an outside air flow inlet opening in an outer peripheral wall of the cap body and extends along an axial direction of the cap body.
[3] The cap according to [1] or [2], wherein a guide that supports the outside air isolation bag and restricts deformation is connected to an end of the outside air inflow passage.
[4] The cap according to any one of [1] to [3], wherein the cap body is provided with a thread on the outer periphery thereof for screwing with a mouth portion of the container.
[5] The lid according to any one of [1] to [4], wherein the lid is screwed into the cap body or is connected to the cap body via a hinge. cap.
[6] A liquid storage container comprising a container body and the cap according to any one of [1] to [5] attached to a mouth portion of the container.

  According to the present invention, since a container such as a polyethylene terephthalate or glass container is used as the container, the quality of the liquid content up to opening is guaranteed. A flexible outside air isolation bag is only required to guarantee about 3 months from opening until the end of use, so low-cost materials can be used, manufacturing costs can be kept low, and containers When filling the liquid contents inside, existing filling equipment can be used. Moreover, according to this invention, a general purpose existing container can be used by changing the structure attached to a cap.

The side view of the cap main body and screw type top lid of the present invention (the outside air current entrance is the front). The side sectional view in the state where the cap body of the present invention was attached to the container. The top view of the cap main body of this invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments.

1-3 is a figure which shows one Embodiment of this invention, FIG. 1 is a side view of a cap main body and a screw-type top cover, FIG. 2 is a sectional side view of the state which mounted | wore the cap main body to the container, FIG. 3 is a plan view of the cap body. In the figure, A represents the liquid content and B represents the outside air.
As shown in the figure, the cap of the present invention is a cap attached to the mouth of the container, and includes a cylindrical cap body 1 and a lid 2.

  In the present invention, the container is not particularly limited, but a conventional general liquid container made of, for example, polyethylene terephthalate is preferably used, and a squeeze type container can also be used. In other words, it is preferable that the cylindrical shape of the cap main body 1 and the outside air isolation bag of the present invention have sizes such as a diameter and a height so that they can be attached to a widely used liquid container.

  The cylindrical cap body 1 includes a liquid content dispensing opening 11 accommodated in a container, a check valve 12, an external air flow inlet 13a, and an external air inflow passage 13 communicating with the external air flow inlet 13a. And is equipped.

  The said extraction opening part 11 is provided in the upper center of a cylindrical main body, The shape etc. are not specifically limited.

In the present invention, the check valve 12 is provided inside the cap body 1 and has a function of preventing the backflow of liquid contents and the entry of outside air.
Although the shape of the check valve in the present invention is not particularly limited, in the present embodiment, the check valve 12 is formed in a state where the entire circumference of the cap body 1 is connected, and is also continuous. The opening can be opened by pulling up the opening pull ring 14. In this case, the left end of the check valve remains connected to the cap body and has a hinge function.

  In the present invention, the outside air inflow passage 13 communicates with an outside air flow inlet 13a that opens in the outer peripheral wall of the cap body, and extends along the axial direction inside the container, and its end is a flexible outside air isolating bag. Connected to 3. In the present embodiment, the external air flow inlet 13a is open to the outer peripheral wall of the cap body, but the location and shape of the external air flow inlet 13a are not particularly limited, and the cap main body 1 is attached to the container. Any location or shape that does not interfere with the operation is acceptable.

The outside air isolation bag 3 has a function of isolating outside air and has a flexibility that can be deformed with the inflow of outside air. Although the material to be used is not particularly limited, the quality assurance of the liquid content up to the opening of the container can be made of a low-cost material because a polyethylene terephthalate container or the like is used as the container.
For example, in the present embodiment, the material is assumed to be polyethylene for the cap body and the outside air isolation bag, polypropylene for the upper lid, and polyethylene terephthalate for the container.

When the liquid content accommodated in the container is poured out using the container having the cap of the present invention having the above-described configuration, when the container is tilted, the check valve 12 is elastically deformed, and the container The liquid content (A) contained in the container passes through the check valve 12 and is poured out from the dispensing opening 11.
At that time, the outside air (B) flows into the reduced pressure inside from the outside air inlet 13a and flows into the outside air blocking bag 3 through the outside air inflow path. As a result, the flexible outside air blocking bag 3 is deformed by the amount of the outside air corresponding to the volume of the poured out content flowing into the inside, and the outside air that has flowed is transformed into the liquid content by the outside air blocking bag 3. Since it is blocked, it is possible to suppress the quality deterioration of the contents.

  In the present invention, the end of the outside air inflow passage 13 is connected to a guide that supports the outside air separating bag 3 and restricts deformation, thereby facilitating insertion of the outside air separating bag 3 into the container. In the liquid contents in the container, the deformation in the outside air isolation bag 3 accompanying the inflow of outside air can be regulated.

  As described above, in the case of the container having the cap of the present invention, the check valve provided in the cap prevents the backflow of the liquid content and the entry of the outside air, and the outside air is discharged when the liquid content is poured out. Flows into the outside air isolation bag via the outside air flow inlet, so that quality deterioration of the contents can be suppressed.

1: Cylindrical cap body 2: Upper lid 11: Opening part for pouring liquid contents 12: Check valve 13: Outside air inlet 13a: Outside air flow inlet 14: Pull ring for opening 3: Outside air isolation bag 4: Guide A: Liquid content B: Outside air

Claims (6)

A cap attached to the mouth of the container,
A cylindrical cap body having an opening for dispensing liquid contents contained in a container at the upper center, and a lid that covers the opening,
Inside the cap body, there is a check valve that prevents backflow of liquid contents and the entry of outside air, and an outside air inflow path through which outside air flows,
A cap, characterized in that an outside air isolation bag is connected to an end of the outside air inflow path and has flexibility that can be deformed as the outside air flows into the inside.   2. The cap according to claim 1, wherein the outside air inflow passage communicates with an outside air flow inlet opening in an outer peripheral wall of the cap body and extends along an axial direction of the cap body.   The cap according to claim 1, wherein a guide that supports the outside air isolation bag and restricts deformation is connected to an end of the outside air inflow path.   The cap according to any one of claims 1 to 3, wherein the cap body is provided with a thread on the outer periphery thereof for screwing with a mouth portion of the container.   The cap according to any one of claims 1 to 4, wherein the lid part is screwed into the cap body or connected to the cap body via a hinge part.   A liquid storage container comprising a container body and the cap according to any one of claims 1 to 5 attached to a mouth portion of the container.

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