JP2018104061A - Container for reserving food - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container for reserving food which can keep quality of fermented food for a long time by effect of steady gas extraction and obstruction of inflow of oxygen, and can be produced at low cost.SOLUTION: A container for reserving food comprises: a container body 1 for storing fermented food; and a lid body 2 for sealing an opening portion of the container body 1. A seal body 3 is provided by lapping one portions of a pair of films. Ventilation openings 3B are provided in a junction portion 3A of the seal body 3 which is sealed by heat sealing. The seal body 3 is attached to the lid body 2 so as to exhaust carbon dioxide from the ventilation openings 3B. The ventilation openings 3B are configured to have a value of L/W between 10 and 200, where L and W are a length and a width of the ventilation opening 3B of the seal body 3, respectively. The container body 1 is constituted so as to obstruct an inflow of oxygen from outside into the ventilation openings 3B.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a food storage container for storing fermented foods that generate carbon dioxide such as miso and kimchi, and more particularly to a food storage container that can be stored for a long time while maintaining the quality of the fermented food.

  The raw miso package of patent document 1 is proposed as a package which preserve | saves and preserve | saves the quality of the fermented food which generate | occur | produces carbon dioxide by fermentation. This package is provided with an inner lid that puts an oxygen scavenger on the raw miso filled in the container body and heat-seals the opening of the container body.

  And it is generated from raw miso by attaching a one-way valve that combines the function of discharging the carbon dioxide generated in the package to the outside and the function of preventing the inflow of oxygen from the outside. It is possible to discharge carbon dioxide and prevent inflow of oxygen, and long-term storage is possible while maintaining the quality of raw miso.

  On the other hand, Patent Document 2 has been proposed by the present applicant, and describes a food deaeration bag capable of degassing carbon dioxide generated from stored food. This deaeration bag for food is invented in order to eliminate the possibility that, when coffee beans are packed, for example, carbon dioxide generated from the coffee beans fills the bag and the bag bursts.

  In this food deaeration bag, a deaeration layer comprising a polyethylene layer and an oxygen barrier layer is provided inside the packaging film. Then, a non-adhesive portion having a striped pattern is continuously formed on the adhesive layer for adhering the packaging film layer and the oxygen barrier layer of the degassing layer, and this non-adhesive portion is used as a deaeration port leading to the outside of the storage bag. Is. As a result, the effect of having a stable degassing action corresponding to the carbon dioxide gas with different generation amounts is obtained.

Japanese Utility Model Publication No. 5-11191 Japanese Patent No. 5770356

  In the case of using a one-way valve like the raw miso package of Patent Document 1, the structure of this one-way valve becomes complicated, and the manufacturing cost of the one-way valve becomes high. In addition, since there is a step of attaching a one-way valve to the inner lid, and then a step of heat-sealing the bubble-attached inner lid to the opening of the container body, to provide the raw miso package of Patent Document 1, There is a disadvantage that the cost is extremely high.

  On the other hand, since the deaeration bag for food of patent document 2 is provided with a deaeration layer composed of a polyethylene layer and an oxygen barrier layer inside the packaging film, the one-way valve as in patent document 1 is unnecessary. It has become. Moreover, a stable degassing effect was obtained with this deaeration layer, and the inflow of oxygen from the outside of the container was successfully prevented.

  However, even in this food deaeration bag, a deaeration layer composed of a polyethylene layer and an oxygen barrier layer is provided on the inner side of the packaging film, and an adhesive layer for adhering the packaging film layer and the oxygen barrier layer of the deaeration layer is provided. The packaging film has a complicated structure in which non-adhered portions forming a striped pattern are continuously formed, and the non-adhered portions form a deaeration opening that leads to the outside of the storage bag. Therefore, there has been a problem that the manufacturing cost of the packaging film is extremely high compared to the manufacturing cost of a general film material.

  Therefore, the present invention was created to solve the above-described problems, and there is no risk of damage even if the fermented food is stored for a long period of time due to a stable degassing effect, and also prevents the inflow of oxygen from outside the container. An object of the present invention is to provide a food storage container that can maintain the quality of a fermented food for a long period of time and can be manufactured at a low cost, which has not been realized so far.

  In order to achieve the above-mentioned object, the first means in the present invention is a food storage container provided with a container main body 1 for storing fermented food and a lid body 2 for sealing the opening of the container main body 1. A part of a piece of film is joined to provide a seal body 3, and a belt-like vent 3 </ b> B is provided at a joint portion 3 </ b> A of the seal body 3 to discharge carbon dioxide in the container body 1, and the seal The length of each vent 3B of the body 3 is set to L, the width is set to W, and the vent 3B is set so that the value of L / W is 10 or more and 200 or less, and oxygen flows into the vent 3B from the outside. It is configured to prevent.

  In the second means, the vent 3B has a belt-like shape formed at a non-adhesive site in the joint 3A of the seal body 3, and the vent 3B forms a plurality of striped patterns. It is continuously arranged at the joint 3A, and the width W of each vent 3B is set to 0.2 mm or more and 5 mm or less.

  In the third means, the lid body 2 is formed by the seal body 3, and the seal body 3 is heat-sealed to the opening edge 1 </ b> A of the container body 1.

  In the fourth means, the lid body 2 is detachably fixed to the opening edge 1A of the container body 1 to seal the opening of the container body 1 and a part of the fixing part 2A. The sealing body 3 is provided in the drilled through-hole 2B.

  As a fifth means, an oxygen scavenger is accommodated in the container body 1.

  According to the food storage container of the present invention, since the carbon dioxide concentration in the container body 1 is released according to the degree of fermentation of the stored food, there is no risk of damage even if the fermented food is stored for a long period of time. . Moreover, since the inflow of oxygen from the outside is blocked by the vent 3B formed in the joint 3A of the seal body 3, the quality of the fermented food can be maintained for a long time.

  That is, when the pressure inside the container body 1 rises due to carbon dioxide generated from the fermented food, carbon dioxide is discharged from the inside of the container body 1 to the outside due to a pressure difference from the outside. In this state, since the pressure inside the container body 1 is higher than the external pressure, oxygen does not flow from the outside.

  Further, even after carbon dioxide is discharged, since the L / W ratio of the vent 3B is large, convection hardly occurs inside the vent 3B, and oxygen hardly flows from the outside. On the other hand, when the carbon dioxide is discharged from the fermented food, the vent 3B is filled with carbon dioxide. Under such circumstances, external oxygen can be prevented from entering from the vent 3B.

It is a sectional side view which shows one Example of the container of this invention. It is a top view which shows one Example of the sealing body of this invention. It is sectional drawing which shows the arrow III-III line | wire shown in FIG. It is sectional drawing which shows the arrow IV-IV line | wire shown in FIG. It is a top view which shows the other example of the vent of this invention. It is a sectional side view which shows the other Example of this invention container. It is a top view which shows the other Example of this invention cover body.

  The container of the present invention is a container for storing fermented food that discharges carbon dioxide even during storage, such as miso and kimchi, and has a container body 1, a lid body 2, and a seal body 3 as main components.

  The material of the container body 1 is a plastic that does not transmit gas, for example, a polymer such as polyethylene, polypropylene, polystyrene, or polyester. Moreover, glass, a metal, etc. can be used. There is no restriction | limiting in particular also in the magnitude | size of the container main body 2, It may be transparent or opaque. Moreover, what printed on the surface in order to improve the designability may be used. The illustrated container body 1 has a rectangular cup shape with a flange 1B along the opening edge 1A of the opening (see FIG. 1).

  The lid 2 is a member that seals the opening of the container body 1, and is configured so that the seal body 3 is installed on a part or the whole of the lid 2 to discharge carbon dioxide in the container body 1. The lid 2 can be formed entirely with the seal body 3 (see FIG. 1). In this case, the sealing body 3 constituting the lid body 2 is heat-sealed to the opening edge 1A of the container body 1 and sealed.

  Moreover, the seal body 3 can also be provided in a part of the lid body 2 (see FIG. 6). The lid 2 is composed of a fixing portion 2A, a through-hole 2B, and a seal body 3. The fixing part 2A is a part that detachably fixes to the flange 1B along the opening edge 1A of the container body 1 and seals the opening of the container body 1. The through-hole 2B is a part opened in a part of the fixing portion 2A, and a seal body 3 is provided in the through-hole 2B.

  The structure of the fixing portion 2A is not particularly limited in shape and material as long as the container body 1 can be sealed. In the example of illustration, the container main body 1 and the lid body 2 are provided with fitting portions 1C and 2C for sealing, respectively (see FIG. 6). Furthermore, the lid 2 can be formed of a polymer such as polypropylene or polyethylene. The lid 2 may be transparent or opaque, or may be printed on the surface in order to improve the design. Further, the shape and position of the through-hole 2B can be arbitrarily changed.

  The seal body 3 is formed of two films, and is a seal member that discharges carbon dioxide in the container body 1 and prevents oxygen from flowing into the container body 1 from the outside. In order to form the seal body 3, a part of two films are overlapped and bonded to form a joint 3A. A non-adhesive part is provided in a part of the joint 3A, and a large number of vents 3B are formed at the non-adhesive part. These vents 3B are continuously arranged in the joint 3A so as to form a striped pattern (see FIG. 2).

  The thickness of the film 2 is preferably about 10 μm to 400 μm. If the thickness is less than 10 μm, the strength may be insufficient, and if it exceeds 400 μm, the cost may be disadvantageous. The thicknesses of the two films do not have to be the same and may be different from each other.

  The sealing body 3 can basically use a single layer film. Also, a film having two or more layers may be used. Examples of the film composed of two or more layers include polyester / polyethylene, aluminum foil / polyethylene, and polyester / aluminum foil / polyethylene.

  Furthermore, an oxygen barrier film can be used as the film of the sealing body 3. As the oxygen barrier film, a known film such as a film made of a polymer containing vinyl alcohol or vinylidene chloride as a constituent, a polymer film on which any of silica, alumina, and aluminum is deposited, a metal foil layer, and the like can be used.

  The film of the sealing body 3 may be transparent or opaque. When the contents are deteriorated by sunlight, it is preferable to use an opaque packaging film. Moreover, what printed on the surface in order to improve the designability may be used.

  The two films constituting the seal body 3 may be the same type, or may be different in thickness and material. For example, one may be a combination of polyethylene having a thickness of 1 mm, the other may be a combination of polyethylene having a thickness of 30 μm, one may be a combination of polyethylene having a thickness of 1 mm, and the other is a barrier film formed by silica deposition.

  In this sealing body 3, the joining part 3A is formed by overlapping and adhering both side edges of the film, and the vent 3B is formed by leaving a part of the joining part 3A unjoined. There is no restriction | limiting in particular in an adhesion | attachment means, Means, such as a heat seal and an adhesive agent, can be used. In particular, heat sealing is preferable from the viewpoint of manufacturing simplicity and cost.

  The opening 4 is a substantially band-shaped portion that releases carbon dioxide generated from the contents to the outside of the container and allows oxygen from the outside to enter. When the length of each vent 3B of the seal body 3 is L and the width is W, and the vent 3B is set so that the value of L / W is 10 or more and 200 or less, oxygen from the outside to the vent 3B is set. It becomes possible to prevent the inflow of.

  The width W of the air vent 3B, that is, the width of the portion where a part of the joined portion 3A is not joined is preferably 0.2 mm or greater and 5.0 mm or less, and particularly preferably 0.2 mm or greater and 2.5 mm or less. By setting the width of the vent 3B to 0.2 mm or more and 2.5 mm or less, it is possible to achieve both the release of carbon dioxide and the prevention of oxygen intrusion.

  In the present invention, the ratio L / W between the length L and the width W of the vent 3B is 10 or more and 200 or less, and more preferably 15 or more and 150 or less. When the value of the ratio L / W of the length L to the width W is less than 10, the inflow of oxygen cannot be prevented, and the storage stability of the fermented food is significantly deteriorated. Moreover, when this ratio exceeds 200, it will become difficult to discharge | release carbon dioxide outside a container, and there exists a possibility that the cover body 2 and the seal body 3 may be damaged.

  The shape of the vent 3B is formed in a straight line as shown in FIG. Further, it may be diagonal, polygonal, or curved as shown in FIG. These shapes may be preferable because the L value of the vent 3B can be increased. In addition, when the shape of the vent 3B is not a straight line, the distance from one end of the vent 3B to the other end is defined as a length L. FIG. 4 shows a cross section of the opening. By adopting this shape, the opening is crushed and oxygen is less likely to enter.

  Furthermore, an oxygen scavenger (not shown) may be housed inside the container body 1 as necessary. By using an oxygen scavenger, the oxygen concentration in the container can be lowered to further improve the food storage stability. As the oxygen scavenger, known ones using iron or ascorbic acid can be used.

  The configuration of the present invention and the illustrated example are not limited. In addition to miso and kimchi, other fermented foods such as lactic acid bacteria foods such as cheese can be stored as fermented foods stored in the container of the present invention.

DESCRIPTION OF SYMBOLS 1 Container body 1A Opening edge 1B Flange 1C Fitting part 2 Lid 2A Fixed part 2B Through-hole 2C Fitting part 3 Sealing body 3A Joint part 3B Vent

Claims (5)

In a food storage container comprising a container main body for storing fermented food, and a lid for sealing the opening of the container main body,
A part of the two films are joined to provide a sealing body, and a belt-like vent is provided at the joining part of the sealing body to discharge carbon dioxide in the container body,
The length of each air vent of the seal body is L and the width is W, and the air vent is set so that the value of L / W is 10 or more and 200 or less to prevent the inflow of oxygen from the outside to the air vent. A food storage container characterized by being configured as described above.   The vent has a belt-like shape formed at a non-adhesive portion at the joint of the seal body, and the vent is continuously arranged at the joint so as to form a plurality of striped patterns. The food storage container according to claim 1, wherein the width W is set to 0.2 mm or more and 5 mm or less.   The food storage container according to claim 1, wherein the lid is formed of the seal body, and the seal body is heat-sealed to the opening edge of the container body.   The lid includes a fixing portion that is detachably fixed to the opening edge of the container body and seals the opening of the container body, and the sealing body is provided in a through-hole opened in a part of the fixing portion. The food storage container according to claim 1.   The food storage container according to claim 1, wherein an oxygen scavenger is accommodated in the container body.

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