JP2533871Y2 - Pressurized heat sterilization container - Google Patents

Description

[Detailed description of the invention] [Industrial application field] In the invention, after filling and sealing a food in a state where a gas is contained in a chamber of a container, the container is subjected to a pressurized heat sterilization treatment, so-called aerated sterilization. A container suitable for:

[Prior art] Conventionally, as a packaged food that has been subjected to a pressurized heat sterilization treatment, for example, a space for preventing binding of solid foods such as cooked rice or for adding a curry sauce or the like at the time of eating is secured. For example, there is a product in which a food is filled and sealed in a state in which a gas is contained in a chamber of a container, and then the container is subjected to a pressurized heat sterilization treatment for the reason of performing the above.

In producing such a packaged food product, the pressure difference between the internal pressure of the container and the pressure in the pressurized heat sterilization tank (hereinafter simply referred to as the external pressure of the container) during pressurized heat sterilization increases, As a result, there is a problem that the deformation of the container body, the peeling of the lid, etc. may occur, and the commercial value may be significantly impaired.

Conventionally, as means for solving such a problem, a pressure change pattern in the pressurized heat sterilization tank is set in advance so that the external pressure of the container changes according to the change in the internal pressure of the container during pressurized heat sterilization. A method is known (JP-A-61-13).
No. 71).

[Problems to be Solved by the Invention] However, according to the above-described conventional method, although the above problems can be solved, there are the following problems.

That is, according to the above-described conventional method, it is necessary to set the pressure change pattern in the pressurized heat sterilization tank quite strictly. Therefore, when manufacturing a wide variety of products,
It is necessary to set an appropriate pressure change pattern in the pressurized heat sterilization tank for each product. However, the pattern of changes in the internal pressure of the container depends on the size of the container
Everything depends on the amount of gas contained, the type of food to be stored, etc., and setting up an appropriate pressure change pattern in the pressurized heat sterilization tank for each product requires considerable effort and labor. Then there was a problem.

Even when the same product is manufactured, the amount of food to be filled, the composition of water, etc., the product temperature, etc., may differ greatly from container to container. In some cases, it was not possible to set the pressure change pattern in the pressure heating sterilization tank. In order to avoid such a situation, strict control of the food filling amount, composition of water, etc., product temperature, etc. is necessary, but this requires new equipment and processes, etc., resulting in high costs. was there.

In the case where a plurality of independent chambers are formed in the container body, the pressure in the pressurized heat sterilization tank is controlled so as to prevent deformation and peeling of the lid in any one of the chambers. Even if the change pattern is strictly defined, the conditions do not necessarily prevent the deformation of the other chambers and the peeling of the lid, and when the change patterns can be prevented, the shape of each chamber, the container, There is a problem that it is necessary to add a considerable restriction on the amount, type of food, filling amount and the like. These issues are:
This was particularly noticeable in the case of food in a container in which the amount of gas such as air and inert gas in each room was different.

[Means for Solving the Problems] An object of the present invention is to provide a container for pressurized heat sterilization that can solve the above problems.

The present inventors have conducted intensive research and development to obtain the above-mentioned container for pressurized heat sterilization, and as a result, by absorbing the pressure difference between the inside and outside of the container by changing the volume inside the container by deforming the lid significantly. The following two findings have been obtained: that deformation of the container body and peeling of the lid can be effectively prevented, and that the deformation of the lid does not significantly impair the commercial value as compared with the container body.

The present invention completed on the basis of the above findings can be broadly classified into three points.

First, a first gist is to provide a container body provided with one chamber and a heat-resistant synthetic resin lid capable of sealing the chamber and satisfying the following requirements (a) and (b). (B) the stress is smaller than that of the container body, and (b) the curved portions α, β, and γ of the cross section are formed inside the adhesive portion with the edge 9 of the opening of the closed chamber. The concave ridge portion 10 configured to be able to bend in both directions, or the curved portions α ′, β ′ of the cross section,
γ ′ is provided so as to be bent in both directions. A second gist is a container body provided with two or more chambers, and a lid made of a heat-resistant synthetic resin capable of sealing each of the chambers and satisfying the following requirements (a) and (b). A container for pressurizing and heating sterilization containing two or more kinds of contents for each chamber, (a) the stress is smaller than that of the container body, and (b) the edge 9 of the opening of the closed chamber. Inside the bonded part, the concave ridge portion 10 configured so that the curved portions α, β, γ of the cross section can be bent in both directions, or the curved portions α ′, β ′, γ ′ of the cross section can be bent in both directions The ridge 11 configured as described above is provided around. And the third
The gist of the invention is that a container main body provided with two or more chambers, a film-like lid for sealing one of the chambers provided in the container main body, and another chamber can be hermetically closed and the following (a) ) And (b)
A lid made of a heat-resistant synthetic resin satisfying the requirements of the above, wherein different types of contents are stored in a room sealed with the film-like lid and another room. Pressure heating sterilization container, (b) the stress is smaller than the above container body,
(B) Inside the adhesive portion of the opening of the chamber to be sealed with the edge 9 of the opening, a concave ridge portion 10 in which curved sections α, β, γ can be bent in both directions, or a curved section α in cross section ', Β', γ '
Is that a ridge 11 that can be bent in both directions is provided around.

Conventionally, a technology similar at first glance to the present invention has
There is 7350. However, the idea is to fill and seal the heated liquid food or the like so that the head space remains in the container properly and to prevent deformation of the container due to a decrease in the internal pressure of the container that occurs when the food returns to room temperature. It is characterized by the formation of a weak part of the waist. In contrast, the present invention
Pressurized heating that can effectively prevent deformation of the container body when the internal pressure of the container becomes smaller than the external pressure of the container during sterilization under pressure and heat and peeling of the lid when the internal pressure of the container becomes larger than the external pressure of the container It is an object of the present invention to provide a container for sterilization, and in order to achieve such an object, (a) the stress is smaller than that of the container main body, and (b) the adhesive portion of the sealing portion with the edge of the opening of the chamber. Inside, curved portions α, β, γ configured so that the curved portion of the cross section can be bent in both directions
Characterized by the fact that a concave ridge or a convex ridge composed of curved parts α ', β', and γ 'are provided around the cover, and a lid body that satisfies the above requirements (a) and (b) is used. It has. No. 57-117350 discloses no such technical idea.

[Action] According to the container for pressurized heat sterilization of the present invention described above, a concave or curved portion α composed of curved portions α, β, and γ configured such that a curved portion of a cross section can be bent in both directions on the lid. , Β ', γ', the lid can be deformed so as to enlarge or reduce the volume of the space inside the container for aerated sterilization. The pressure difference between the inside and outside of the container at the time can be absorbed.

[Example] Hereinafter, the contents of the present invention will be described based on an example.

FIG. 1 is a perspective view of an embodiment of the present invention, FIGS. 2 and 3 are cross-sectional views of an embodiment of the present invention, FIGS. 4 and 5 are cross-sectional views of a lid, and FIG. FIG. 7 and FIG. 8 are cross-sectional views of the container for pressurized heat sterilization with the lid deformed,
9 and 10 are sectional views of another embodiment of the present invention.

 In the drawing, reference numeral 1 denotes a container for pressurized heat sterilization.

The container 1 for pressurized heat sterilization includes, for example, cooked rice such as pilaf, red rice and white rice, noodles such as spaghetti, fried noodles, udon, ramen, soba, dough for baked confectionery such as souffle, cake and pie, and curry and stew.・ Contains liquid foods such as soups, sauces, miso soups, beverages such as soy milk, oolong tea, green tea, tea, juice, coffee, desserts such as jelly and yogurt, and other foods such as tofu, oden, gratin, garlic, salad, etc. I do.

The container 1 for pressurized heat sterilization has a container body 2 and a lid 3.

First, examples of the shape of the container body 2 include a box shape, a cup shape, a bowl shape, a tray shape, and the like, and are not particularly limited.

 One chamber 4 is provided in the container body 2.

When the container for pressurized heat sterilization 1 is designed so as to be heated by a microwave oven, in order to heat the food filled in the chamber 4 more uniformly, a plurality of foods are placed on the bottom 5 of the chamber 4. It is preferable to attach the foot 6.

Next, as shown in FIG. 6, a flange 8 is provided around the opening 7 of the chamber 4 of the container main body 2, and the width of the flange 8 is set so as to adhere to an edge 9 of the lid 3 described later. Therefore, it is appropriate that the thickness is 5 mm or more, preferably 5 to 40 mm. Also,
A projection (not shown) for easy peeling may be provided on the upper surface of the flange 8.

The material of the container body 2 is not particularly limited as long as it has heat resistance enough to withstand the pressure and heat sterilization treatment. For example, a synthetic resin such as polyethylene or polypropylene can be suitably used. The thickness is preferably, for example, 0.7 to 1.5 mm.

 Next, the lid 3 will be described.

The lid 3 is configured to have a smaller stress than the container body 2.

As shown in FIGS. 2 and 4, the lid 3 is provided with a recess 10 inside the edge 9 to be bonded to the flange 8 of the container body 2 or as shown in FIGS. 3 and 5. Ridge
11 are provided around. Curved surfaces α, β of the cross section of the concave streak portion 10,
γ and the curved portions α ′, β ′, γ ′ of the ridge 11 are configured to be bendable in both directions, that is, to be able to bend in both directions of increasing the angle and decreasing the angle.

Next, the top plate 12 of the lid 3 is configured to have substantially the same height as the edge 9, but is not necessarily limited to this.
It may be configured higher or lower.

The material of the lid 3 is not particularly limited as long as it is a synthetic resin having heat resistance enough to withstand the pressure and heat sterilization treatment. For example, a synthetic resin such as polyethylene and polypropylene can be suitably used. The thickness is suitably, for example, 0.05 to 0.6 mm.

As means for bonding the flange 8 of the container body 2 and the edge 9 of the lid body 3 in order to seal the container body 2 with the lid 3, a known adhesive such as use of an adhesive such as hot melt or heat sealing is used. Means may be adopted.

Next, the container 1 for autoclaving during autoclaving.
The operation of will be described.

As described above, the lid 3 is formed of the curved portions α, β, and γ that can be bent in both directions inside the edge 9 that has a smaller stress than the container main body 2 and adheres to the flange 8 of the container main body 2. Since the convex ridge portion 11 composed of the concave ridge portion 10 or the curved portions α ′, β ′, and γ ′ that can be bent in both directions is provided around, the internal pressure of the pressure and heat sterilization container 1 during pressure and heat sterilization is increased. When the pressure difference between the pressure and the external pressure increases, the curved portions α, β, γ of the concave ridge 10 or the convex
Are bent and the lid 3 is deformed so as to enlarge or reduce the volume in the container 1 for pressurization and heat sterilization. The pressure is approximately equal to the external pressure of the container.

That is, when the pressure in the pressurized heat sterilization container 1 is larger than the external pressure of the container, the volume of the closed space in the pressurized heat sterilization container 1 is changed as shown in FIG. Is deformed to be larger. Accordingly, the pressure in the pressurized and heated gas-killing container 1 becomes substantially equal to the external pressure of the container, and the peeling of the lid 3 can be prevented.

On the other hand, when the pressure in the pressurized and heated gas-killing container 1 is smaller than the external pressure of the container, the lid 3 is moved as shown in FIG.
The container is deformed so that the volume of the closed space in the pressurized and heated gas-killing container 1 is reduced. Thereby, the pressure in the pressurized and heated gas-killing container 1 becomes substantially equal to the external pressure, and the deformation of the container body 2 can be prevented.

In another embodiment of the present invention, a plurality of independent chambers 4a and 4b are provided in the container body 2 as shown in FIG.
4a and 4b are replaced with a lid 3 that satisfies the following requirements (a) and (b)
Closed by a and 3b. In this case, each room 4a, 4b
As in the case of the chamber 4 of the above embodiment, the caps 3a and 3b are deformed at the time of pressurization and heat sterilization to change the volume and adjust the pressure inside the chamber. Body 3
The peeling of a and 3b can be prevented. The lids 3a, 3b
Can be integrally formed.

Still another embodiment of the present invention is provided with a plurality of independent chambers 4c and 4d of the container body 2, as shown in FIG.
The chamber 4c is replaced with a lid 3c that satisfies the following requirements (a) and (b).
The chamber 4d is closed by a film-like lid 3d. In this case, when the container 1 for pressurized heat sterilization is subjected to pressurized heat sterilization, the pressure change pattern in the pressurized heat sterilization tank is determined so as to prevent deformation of the chamber 4d and peeling of the lid 3d. When pressurized and heat-sterilized, the chamber 4c changes its volume due to deformation of the lid 3c at the time of pressurized and heat-sterilized to adjust the pressure in the chamber 4c as in the case of the chamber 4 of the above embodiment,
Deformation of the chamber 4c and peeling of the lid 3c can be prevented.
Incidentally, the lids 3c and 3d may be integrally formed.

[Effects of the Invention] As described in detail above, according to the container for pressurized heat sterilization of claim (1) of the present invention, one chamber provided in the container main body is subjected to (A) stress from the container main body. Is small. (B)
Inside the adhesive portion of the opening of the chamber to be sealed with the edge 9, a concave ridge portion 10 configured so that the curved portions α, β, γ can be bent in both directions, or a curved portion α ′, β ′ And γ ′ are formed so as to be able to bend in both directions, and are sealed by a lid body that satisfies the above two requirements (A) and (B). Even when the pressure difference between the internal pressure and the external pressure of the autoclave is increased during autoclave, the cover is changed by expanding or reducing the volume in the autoclave. The pressure in the pressure heating sterilization container can be made substantially equal to the external pressure of the container. Thereby, when manufacturing various kinds of products, it is not necessary to strictly set the pressure change pattern in the pressurized heat sterilization tank for each product, and it is possible to reduce the labor and labor required for the pattern. . In addition, even when the same product is manufactured, it is not necessary to strictly control the filling amount of the food, the composition of the moisture and the like, the product temperature, and the like.

According to the container for pressurized heat sterilization of claim (2) of the present invention, in addition to the effect of claim (1), each chamber has a lid satisfying the two requirements (a) and (b), respectively. Because the body is sealed, even when the pressure difference between the internal pressure of each chamber of the pressurized heat sterilization container and the external pressure of the container increases during the pressurized heat sterilization, the respective lids increase the volume of each room. The pressure in each chamber can be made substantially equal to the external pressure of the container by changing so as to expand or contract. Thus, there is no need to limit the shape, capacity, amount of gas, type of food, filling amount, and the like of each chamber of the container as in the conventional method.

According to the container for pressurized heat sterilization of claim 3 of the present invention, one of the two or more chambers provided in the container body is sealed with a film-like lid, and the other chamber is sealed with the (a). ) And (b) are sealed with a lid that satisfies the requirements, so that a chamber sealed with a film-shaped lid can be deformed under pressure and heated and sterilized to prevent peeling of the lid. When the pressure change pattern in the inside is determined and the pressure and heat sterilization treatment is performed, the other chambers are deformed so that the lid satisfying the requirements of (a) and (b) expands or contracts the volume in the other chamber. Thus, the pressure in the other chamber can be made substantially equal to the external pressure of the container. Thus, there is no need to limit the shape, volume, gas amount, food type, filling amount, etc. of each chamber of the container as in the conventional method.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIGS. 2 and 3 are cross-sectional views of an embodiment of the present invention, FIGS. 4 and 5 are cross-sectional views of a lid, and FIG. 7 and 8 are cross-sectional views of the container for pressurized heat sterilization with the lid deformed, and FIGS. 9 and 10 are cross-sectional views of another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Container for pressurized heat sterilization 2 ... Container body 3 ... Lid 10 ... Concave ridge 11 ... Convex ridge

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-1371 (JP, A) JP-A 56-175369 (JP, U) JP-A 52-12102 (JP, U) JP-A 57- 117350 (JP, U)

Claims (3)

(57) [Scope of request for utility model registration] 1. A pressurizing apparatus comprising: a container main body provided with one chamber; and a heat-resistant synthetic resin lid capable of sealing the chamber and satisfying the following requirements (a) and (b). Heat sterilization container. (A) The stress is smaller than that of the container body. (B) Inside the bonded portion of the opening of the chamber to be sealed with the edge 9, a concave ridge portion 10 configured so that the curved portions α, β, and γ can be bent in both directions, or a curved portion α of the cross section ', Β', γ '
Has a ridge 11 that is configured to bendable in both directions. 2. A container body provided with two or more chambers, and a lid made of a heat-resistant synthetic resin capable of sealing each of the chambers and satisfying the following requirements (A) and (B). A pressurized heat sterilization container having two or more contents in each chamber. (A) The stress is smaller than that of the container body. (B) Inside the bonded portion of the opening of the chamber to be sealed with the edge 9, a concave ridge portion 10 configured so that the curved portions α, β, and γ can be bent in both directions, or a curved portion α of the cross section ', Β', γ '
Has a ridge 11 that is configured to bendable in both directions. 3. A container main body provided with two or more chambers, a film-like lid for sealing one of the chambers provided in the container main body, and another chamber capable of being sealed, It has a lid made of a heat-resistant synthetic resin satisfying the requirements of (a) and (b), and contains different types of contents in a room sealed with the film-like lid and another room. A container for heat and pressure sterilization, characterized in that: (A) The stress is smaller than that of the container body. (B) Inside the bonded portion of the opening of the chamber to be sealed with the edge 9, a concave ridge portion 10 configured so that the curved portions α, β, and γ can be bent in both directions, or a curved portion α of the cross section ', Β', γ '
Has a ridge 11 that is configured to bendable in both directions.