JPH11124120A - Container for high temperature food and method for preventing deformation of container side face - Google Patents
Container for high temperature food and method for preventing deformation of container side faceInfo
- Publication number
- JPH11124120A JPH11124120A JP30659097A JP30659097A JPH11124120A JP H11124120 A JPH11124120 A JP H11124120A JP 30659097 A JP30659097 A JP 30659097A JP 30659097 A JP30659097 A JP 30659097A JP H11124120 A JPH11124120 A JP H11124120A
- Authority
- JP
- Japan
- Prior art keywords
- container
- food
- temperature
- temperature food
- container body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Containers Having Bodies Formed In One Piece (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、加熱処理又は高温
殺菌処理等を行った直後の高温の食品が充填されたプラ
スチック容器本体を容器蓋で密封する高温食品用容器及
び容器側面の変形防止方法に関し、更に詳述すれば、高
温の食品が密封された容器内で放冷された時に容器本体
の側面に変形が生じるのを防ぐことができる高温食品用
容器及び該容器に高温の食品を密封収容することによっ
て容器内が減圧して容器本体の側面に凹みが生じるのを
防止することができる容器側面の変形防止方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-temperature food container in which a plastic container body filled with high-temperature food immediately after heat treatment or high-temperature sterilization treatment is sealed with a container lid, and a method for preventing deformation of the container side surface. More specifically, a high-temperature food container capable of preventing deformation of the side surface of the container body when the high-temperature food is cooled in a sealed container, and sealing the high-temperature food in the container. The present invention relates to a method for preventing deformation of a side surface of a container, which can prevent the inside of the container from being decompressed by being accommodated, thereby preventing the side surface of the container body from being dented.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】加熱処
理又は高温殺菌処理等を行った食品を容器にパックする
場合、菌類等の混入を防ぐために、処理後、直ちに容器
を密封する必要がある。そこで、従来より、このような
食品については、例えば図３に示すように高温食品用容
器１としてポリプロピレン等の熱溶着性のあるプラスチ
ック材料を使用したプラスチック容器本体２に食品を充
填し、容器本体２内で食品に上記処理を施した直後に、
又は上記容器本体２に処理直後の高温の食品４を充填し
た後に、熱溶着性の比較的薄いプラスチックフィルムを
容器蓋３としてシールしたものが用いられていた。2. Description of the Related Art When a food that has been subjected to a heat treatment or a high-temperature sterilization treatment is packed in a container, it is necessary to seal the container immediately after the treatment in order to prevent contamination by fungi and the like. . Conventionally, for such foods, for example, as shown in FIG. 3, food is filled in a plastic container body 2 using a heat-sealable plastic material such as polypropylene as the high-temperature food container 1, Immediately after applying the above treatment to the food in 2,
Alternatively, a container obtained by filling the container body 2 with the hot food 4 immediately after the treatment and then sealing the container lid 3 with a relatively thin plastic film of heat welding property has been used.
【０００３】しかしながら、高温時の食品はほとんどの
場合、多量の蒸気を含んでいるため、食品が密封された
容器内で放冷されると蒸気が凝縮して水滴となり、それ
に伴って容器内圧が減圧して、図４に示すように容器蓋
３が容器内側に凹むと共に、容器本体２の底面２ｃ及び
側面２ｄが内側に凹み、特に側面２ｄの凹みによって容
器の外観が損なわれて商品価値が下がるという問題があ
った。この場合、容器本体２の容積と食品４の体積とに
大きな違いがなければ、容器の凹みはそれ程目立たない
が、例えば御飯のようにふっくら感を要求される食品４
については、放冷後に容器本体２と容器蓋３によって御
飯（食品）４が押圧されてふっくら感が損なわれないよ
うに、食品体積より容器容積がより大きいことが望まし
く、そのため、容器内のヘッドスペースが大きくなる傾
向があり、上記のような容器の変形が大きくなるため
に、特に容器本体の側面の変形を防ぐ技術の開発が要望
されていた。[0003] However, most foods at high temperatures contain a large amount of steam, and when the food is allowed to cool in a sealed container, the steam condenses into water droplets, and as a result, the internal pressure of the container is reduced. When the pressure is reduced, the container lid 3 is recessed inside the container as shown in FIG. 4, and the bottom surface 2c and the side surface 2d of the container body 2 are recessed inward. There was a problem of going down. In this case, if there is no large difference between the volume of the container body 2 and the volume of the food 4, the dent of the container is not so noticeable.
It is preferable that the container volume is larger than the food volume so that the rice (food) 4 is not pressed by the container main body 2 and the container lid 3 after cooling and the plump feeling is not impaired. Since the space tends to increase and the deformation of the container as described above increases, there has been a demand for the development of a technique for preventing deformation of the side surface of the container body.
【０００４】本発明は、上記事情に鑑みなされたもの
で、容器本体の側面に凹みが生じるのを防止できる高温
食品用容器及び該容器によって容器本体の側面の変形を
防止する容器側面の変形防止方法を提供することを目的
とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a high-temperature food container capable of preventing a dent on the side surface of a container body, and a container side deformation prevention device for preventing the container body side surface from being deformed by the container. The aim is to provide a method.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記目的を達
成するため、加熱処理又は高温殺菌処理等を行った直後
の高温の食品が充填された有底無蓋のプラスチック容器
本体を容器蓋で密封する高温食品用容器において、上記
プラスチック容器本体の底面に複数の同心円リング状の
内リブ又は渦巻き状の内リブを形成してなることを特徴
とする高温食品用容器、及び加熱処理又は高温殺菌処理
等を行った直後の高温の食品を高温食品用容器に密封収
容した後に、該容器の内圧が上記食品の放冷によって減
圧して上記容器の側面が変形するのを防止する方法であ
って、上記高温の食品が充填された上記高温食品用容器
の容器本体を上記容器蓋で密封した後、上記容器本体の
底面を容器内側に凹ませて上記容器本体の側面の変形を
防止することを特徴とする容器側面の変形防止方法を提
供する。ここで、上記プラスチック容器本体の底面の肉
厚が容器側面の肉厚より薄くなるように形成されている
と、より好適であり、上記プラスチック容器本体の底面
に形成された一の内リブとこれに隣接する内リブとの間
隔が１〜５ｍｍであれば、更に好適である。また、上記
プラスチック容器本体の容積が充填された上記高温の食
品の体積の１．３〜３倍であれば、より好適であり、上
記食品が御飯であれば、特に効果的である。そして、上
記食品の品温が８０〜９０℃である時に容器本体を密封
すると、より効果的である。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a closed-bottomed plastic container body filled with high-temperature food immediately after heat treatment or high-temperature sterilization treatment. A high-temperature food container to be sealed, wherein a plurality of concentric ring-shaped inner ribs or spiral inner ribs are formed on the bottom surface of the plastic container body, and a heat treatment or high-temperature sterilization. After sealing the high-temperature food immediately after performing the treatment or the like in a high-temperature food container, a method for preventing the inner pressure of the container from being reduced by the cooling of the food and preventing the side surface of the container from being deformed. After sealing the container body of the high-temperature food container filled with the high-temperature food with the container lid, the bottom of the container body is recessed inside the container to prevent deformation of the side surface of the container body. Special It provides a deformation preventing method of the container side to. Here, it is more preferable that the thickness of the bottom surface of the plastic container body is formed to be smaller than the thickness of the side surface of the container, and more preferably, one inner rib formed on the bottom surface of the plastic container body and It is more preferable that the distance between the inner rib and the inner rib is 1 to 5 mm. It is more preferable that the volume of the plastic container body is 1.3 to 3 times the volume of the filled high-temperature food, and it is particularly effective if the food is rice. It is more effective to seal the container body when the food temperature is 80 to 90 ° C.
【０００６】即ち、本発明の高温食品用容器は、プラス
チック容器本体の底面に複数の同心円リング状の内リブ
又は渦巻き状の内リブが形成されているので、容器内に
密封された高温の食品が冷却して容器本体に変形が生じ
る時に、容器本体の底面に形成された複数の同心円リン
グ状の内リブ又は渦巻き状の内リブが蛇腹のように機能
し、容器内圧の変化による容器の膨張、収縮が底面の上
記内リブの蛇腹と同様の伸縮によって行われるため、上
記のように容器内圧が減圧されると上記内リブが容器内
側に向かって引っ張られて伸びた形となり、容器側面に
比べて底面が容器の内側に凹み易くなるために、容器本
体の側面が凹んで容器の外観が損なわれるのを防ぐこと
ができる。That is, in the high-temperature food container of the present invention, since a plurality of concentric ring-shaped inner ribs or spiral inner ribs are formed on the bottom surface of the plastic container main body, the high-temperature food sealed in the container is provided. When the container is cooled and the container body is deformed, a plurality of concentric ring-shaped inner ribs or spiral inner ribs formed on the bottom surface of the container body function like bellows, and the container expands due to a change in the container internal pressure. Since the contraction is performed by the same expansion and contraction as the bellows of the inner rib on the bottom surface, when the internal pressure of the container is reduced as described above, the inner rib is stretched by being pulled toward the inside of the container, and on the side of the container. In comparison, since the bottom surface is more likely to be recessed inside the container, it is possible to prevent the side surface of the container body from being depressed and impair the appearance of the container.
【０００７】ここで、容器内の減圧によって容器本体が
凹む際に、肉厚が薄いところが凹み易くなるので、容器
本体の底面の肉厚が容器側面の肉厚より薄くなるように
形成すると、底面がより凹み易くなる。また、容器本体
の底面に形成された一の内リブとこれに隣接する内リブ
との間隔が１〜５ｍｍであると、高温時の食品に含まれ
ていた蒸気が放冷により凝縮することによって生じた容
器内の水滴が内リブと内リブとの間に溜まるので、食品
に水滴が接触することを防止できるので、例えば御飯の
ように容器内の全ての箇所で食品中の水分が均一でなけ
れば食味に差が生じてしまう食品について、その食味の
均一性、品質等を維持することができる。更に、容器本
体の容積が充填された食品の体積の１．３〜３倍であれ
ば、例えば御飯のようにふっくら感が要求される食品に
ついてそのふっくら感が損なわれることがないのみなら
ず、容器本体の側面の凹みを防止することもできる。Here, when the container body is depressed due to the reduced pressure in the container, the thinner portion is easily dented. Therefore, if the thickness of the bottom surface of the container body is formed to be thinner than the thickness of the side surface of the container, Becomes more easily dented. Further, when the distance between one inner rib formed on the bottom surface of the container body and the inner rib adjacent thereto is 1 to 5 mm, steam contained in the food at a high temperature is condensed by cooling. The generated water droplets in the container accumulate between the inner ribs, so that it is possible to prevent the water droplets from contacting the food, so that the water in the food is uniform at all points in the container, such as rice. The uniformity, quality, and the like of the taste of a food that would otherwise cause a difference in taste can be maintained. Furthermore, if the volume of the container body is 1.3 to 3 times the volume of the filled food, not only does the plump feeling of foods, such as rice, require a plump feeling, but the plump feeling is not impaired. The dent on the side surface of the container body can also be prevented.
【０００８】本発明の容器側面の変形防止方法によれ
ば、高温の食品が充填された上記高温食品用容器を上記
容器蓋で密封した後、上記容器の底面を容器内側に凹ま
せるので、その凹みに伴って容器の容積が減少して、高
温の食品中の蒸気が凝縮して容器内が負圧になるために
生じる容器の凹み分に対応することができ、容器本体の
側面に変形が生じるのを防ぐことができる。According to the method for preventing deformation of the side of a container according to the present invention, after the container for high-temperature food filled with high-temperature food is sealed with the container lid, the bottom of the container is recessed inside the container. With the depression, the volume of the container decreases, and the vapor in the high-temperature food condenses, which can correspond to the depression of the container caused by the negative pressure inside the container. Can be prevented.
【０００９】[0009]
【発明の実施の形態及び実施例】以下、本発明につき図
面を参照して更に詳しく説明する。図１及び図２は本発
明の高温食品用容器の一例を説明するものであり、この
高温食品用容器１は、プラスチック容器本体２と容器蓋
３とからなり、加熱処理又は高温殺菌処理等を行った直
後の高温の御飯（食品）４が容器本体２に充填されてお
り、この容器本体２の開口部２ａを容器蓋３で覆ってそ
の開口端面２ｂに熱溶着させることによって密封されて
いる。そして、上記容器本体２の底面２ｃは円形であ
り、複数のリング状の内リブ５が同心円状に形成されて
いる。なお、上記複数の内リブ５は、渦巻き状のもので
あってもよい。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings. 1 and 2 illustrate an example of a container for high-temperature food according to the present invention. The container 1 for high-temperature food includes a plastic container main body 2 and a container lid 3, and is subjected to a heat treatment or a high-temperature sterilization treatment. The hot rice (food) 4 immediately after the operation is filled in the container main body 2, and the opening 2 a of the container main body 2 is covered with the container lid 3 and is sealed by heat welding to the opening end face 2 b. . The bottom surface 2c of the container body 2 is circular, and a plurality of ring-shaped inner ribs 5 are formed concentrically. The plurality of inner ribs 5 may be spiral.
【００１０】ここで、上記容器本体２は、その材質が特
に制限されるものではなく、従来より容器内で食品の加
熱処理又は高温殺菌処理等を行ったり、又はこれらの処
理を行った直後の高温の食品を充填する容器に使用され
ているものを用いることができ、食品が高温である時、
直ぐに密封することを鑑みれば、熱溶着性を有するプラ
スチック材料が望ましく、このようなプラスチック材料
としては、例えばポリプロピレン（ＰＰ）、ポリエチレ
ン、ポリスチレン、エチレン−ビニルアルコール共重合
体（ＥＶＯＨ）等の単層プラスチック材料又はこれらの
単層プラスチック材料を２種以上適宜組み合わせて積層
した多層プラスチック材料などを挙げることができ、こ
れらの中でも酸素遮断性、水蒸気透過性（防湿性）、耐
衝撃性等を考慮すれば、特にＰＰ／ＥＶＯＨ／ＰＰから
なる多層プラスチック材料等が好適に使用される。Here, the material of the container body 2 is not particularly limited, and it has been conventionally subjected to a heat treatment, a high-temperature sterilization treatment, or the like of food in a container, or immediately after the treatment. What is used for the container to fill the hot food can be used, when the food is hot,
In view of immediate sealing, a plastic material having a heat-sealing property is desirable. As such a plastic material, for example, a single layer of polypropylene (PP), polyethylene, polystyrene, ethylene-vinyl alcohol copolymer (EVOH), or the like can be used. Examples of the material include a plastic material or a multilayer plastic material obtained by appropriately combining two or more of these single-layer plastic materials and laminating them. Among these, oxygen barrier properties, water vapor permeability (moisture resistance), impact resistance, and the like are taken into consideration. For example, a multi-layer plastic material composed of PP / EVOH / PP is preferably used.
【００１１】上記容器本体２の大きさは、特に制限され
るものではなく、充填される食品の体積によって、適宜
選定することができ、例えば食品が御飯であれば、通常
１〜２合程度の御飯を充填できる大きさであり、この場
合、御飯が冷えた後に容器本体２及び容器蓋３による押
圧によって御飯のふっくら感が損なわれないようにする
には、容器本体２の容積が充填された高温の食品（御
飯）４の体積の１．３〜３倍、特に１．５〜２．５倍で
あることが望ましい。なお、容器本体２が大きすぎる
と、かさ張ったり、不経済となる場合がある。The size of the container body 2 is not particularly limited, and can be appropriately selected according to the volume of the food to be filled. It is a size that can be filled with rice, and in this case, the volume of the container main body 2 is filled so that the plump feeling of the rice is not impaired by the pressing by the container main body 2 and the container lid 3 after the rice is cooled. It is desirable that the volume of the high-temperature food (rice) 4 is 1.3 to 3 times, particularly 1.5 to 2.5 times. If the container body 2 is too large, it may be bulky or uneconomical.
【００１２】更に、本発明の場合、上記容器本体２の底
面２ｃの肉厚が容器側面２ｄの肉厚より薄くなるように
形成されていることが望ましい。ここで、容器本体２の
側面２ｄの平均厚さは通常０．５〜１ｍｍ程度であり、
この場合、例えば底面２ｃの肉厚と容器側面２ｄとの厚
さ比率としては、底面２ｃ／容器側面２ｄ（平均厚さ）
＝１／１．１〜１／２、特に１／１．２〜１／１．５で
あることが望ましい。Further, in the case of the present invention, it is desirable that the thickness of the bottom surface 2c of the container main body 2 be smaller than the thickness of the container side surface 2d. Here, the average thickness of the side surface 2d of the container body 2 is usually about 0.5 to 1 mm,
In this case, for example, the thickness ratio between the thickness of the bottom surface 2c and the side surface 2d of the container is such that the bottom surface 2c / the container side surface 2d (average thickness).
= 1 / 1.1 to 1/2, particularly preferably 1 / 1.2 to 1 / 1.5.
【００１３】また、上記底面２ｃの内リブ５は、複数が
同心円状に形成されたものであり、その形成個数は２個
以上であれば特に制限されるものではないが、２〜８
個、特に３〜５個とすると好適である。これらの内リブ
５は、完全に真円である必要はなく、略円形であっても
よい。各内リブ５の大きさは特に制限されるものではな
く、底面の大きさ、形成個数によって適宜選定すること
ができるが、通常、内リブ５の高さ（図１のＨ）として
は１〜５ｍｍ程度が好適であり、内リブ５の幅として
は、最大幅（図１のＬ1）２〜６ｍｍ程度、最小幅（図
１のＬ2）１〜３ｍｍ程度が好適である。なお、各内リ
ブの高さ、幅は同一である必要はない。そして、上記高
温食品用容器１内で冷めた後の御飯４に容器内の水滴が
接触しないようにするには、一の内リブ５とこれに隣接
する内リブ５との間隔（図１のＬ3）が狭いことが望ま
しく、各間隔（Ｌ3）が１〜５ｍｍ、特に２〜３ｍｍで
あることが望ましい。なお、容器本体２の底面２ｃは円
形に限定されるものではなく、例えば長方形、正方形等
の種々の形状とすることができる。なお、上記内リブ５
が渦巻き状であっても上記同様である。A plurality of inner ribs 5 on the bottom surface 2c are formed concentrically. The number of the inner ribs 5 is not particularly limited as long as it is two or more.
It is preferable to set the number to three, especially three to five. These inner ribs 5 do not need to be completely circular, and may be substantially circular. The size of each of the inner ribs 5 is not particularly limited, and can be appropriately selected depending on the size of the bottom surface and the number of formed inner ribs. Usually, the height of the inner rib 5 (H in FIG. 1) is 1 to 1. The width of the inner rib 5 is preferably about 5 mm, and the maximum width (L 1 in FIG. 1) is about 2 to 6 mm, and the minimum width (L 2 in FIG. 1) is about 1 to 3 mm. Note that the height and width of each inner rib need not be the same. In order to prevent the water droplets in the container from contacting the rice 4 cooled in the high-temperature food container 1, the distance between one inner rib 5 and the inner rib 5 adjacent thereto (see FIG. 1). L 3 ) is desirably narrow, and each interval (L 3 ) is desirably 1 to 5 mm, particularly preferably 2 to 3 mm. In addition, the bottom surface 2c of the container body 2 is not limited to a circular shape, and may have various shapes such as a rectangular shape and a square shape. The inner rib 5
Is the same as described above even if is spiral.
【００１４】上記容器本体２を成形する方法及び底面２
ｃに内リブ５を形成する方法は、特に制限されるもので
はなく、容器本体２を成形する際に内リブ５を形成して
もよく、容器本体２を成形した後、内リブ５を形成して
もよいが、作業効率を考慮すれば、容器本体２の成形時
に内リブ５も形成することが望ましく、この場合、真空
圧空成形法等の公知の成形方法を採用することができ
る。A method for forming the container body 2 and the bottom surface 2
The method for forming the inner rib 5 on c is not particularly limited, and the inner rib 5 may be formed when the container body 2 is formed. After the container body 2 is formed, the inner rib 5 is formed. However, in consideration of working efficiency, it is desirable that the inner rib 5 is also formed when the container body 2 is formed. In this case, a known forming method such as a vacuum pressure forming method can be adopted.
【００１５】上記高温食品用容器１の容器蓋３は、その
材質が特に制限されるものではなく、従来より加熱処理
又は高温殺菌処理等が行われた直後の高温の食品が充填
された容器をシールするために使用されているものを用
いることができ、食品が上記処理を施された後、直ぐに
容器本体を密封することを鑑みれば、熱溶着性を有する
プラスチックフィルムが望ましく、また、容器側面２ｄ
の凹みを防ぐという本発明の目的を鑑みれば、比較的延
伸性に優れるプラスチックフィルムが望ましく、このよ
うなプラスチックフィルムとしては、例えばＰＰ、ＥＶ
ＯＨ、ポリエチレン等の単層フィルム又はこれらの単層
フィルムを２種以上適宜組み合わせて積層した多層フィ
ルムなどを挙げることができ、これらの中でも特にＰＰ
単層フィルム等が好適に使用される。ここで、上記容器
蓋３のフィルム厚さは、特に制限されるものではない
が、上記容器本体２の側面２ｄ，底面２ｃより薄いこと
が望ましく、２０〜２００μｍ程度であることが望まし
い。フィルム厚さが薄すぎると十分な耐久性が得られな
い場合があり、厚すぎるとシール性が悪くなる上、容器
内が減圧した時に内側に凹み難くなって容器側面２ｄに
凹みが生じて本発明の目的を十分に達成することができ
なくなる場合がある。The material of the container lid 3 of the high-temperature food container 1 is not particularly limited, and a container filled with a high-temperature food immediately after a heat treatment or a high-temperature sterilization treatment is conventionally used. What is used for sealing can be used, and in view of sealing the container body immediately after the food is subjected to the above treatment, a plastic film having heat welding property is desirable, and the container side surface is also preferable. 2d
In view of the object of the present invention to prevent dents in the plastic film, a plastic film having relatively excellent stretchability is desirable, and such a plastic film is, for example, PP or EV.
OH, a single-layer film of polyethylene or the like, or a multilayer film in which two or more of these single-layer films are appropriately combined and laminated, and among them, particularly, PP
A single-layer film or the like is preferably used. Here, the film thickness of the container lid 3 is not particularly limited, but is preferably thinner than the side surface 2d and the bottom surface 2c of the container body 2 and is preferably about 20 to 200 μm. If the film thickness is too thin, sufficient durability may not be obtained. If the film thickness is too thick, the sealing property is deteriorated. In addition, when the inside of the container is depressurized, it is difficult to dent inside and the dent is formed on the side surface 2d of the container. In some cases, the object of the invention cannot be sufficiently achieved.
【００１６】上記高温食品用容器１は、上述したように
容器本体２に御飯４（加熱処理の場合は、米と水）を充
填して、加熱処理又は高温殺菌処理等を行った直後、又
は上記処理を行った直後の高温の御飯４を容器本体２に
充填した後、直ぐに容器蓋３を容器本体２の開口端部２
ｂにヒートシール等の常法により熱溶着させて密封した
ものである。この場合、御飯が冷えた後に容器本体２及
び容器蓋３による押圧によって御飯のふっくら感が損な
われないようにするには、上記のように容器本体２の容
積が充填された高温の食品（御飯）４の体積よりも大き
いことが望ましいが、御飯４の量に対して容器本体２の
容積が比較的大きい場合、上記容器蓋３をシールする際
に、例えばポリプロピレン製不織布等からなり、通気性
を有する除菌フィルター（図示せず）を開口端部２ｂと
容器蓋３との間に介在させ、上記除菌フィルターの介在
部分からのみ外気が導入されるように上記容器蓋３をシ
ールし、容器内の御飯が冷えた後に上記除菌フィルター
の介在部分を熱溶着して完全に密封すると放冷に伴う過
剰な内圧の減圧によって、容器本体２の側面２ｄまで変
形してしまうのを防止することができるので、更に好適
であり、特に充填時の御飯４の量に対する容器本体２の
容積が例えば２倍以上、特に２〜３倍である場合に効果
的である。The high-temperature food container 1 is filled with rice 4 (rice and water in the case of heat treatment) in the container body 2 as described above and immediately after heat treatment or high-temperature sterilization treatment is performed, or After filling the container body 2 with the high-temperature rice 4 immediately after the above processing, the container lid 3 is immediately closed with the opening end 2 of the container body 2.
b is sealed by heat welding using a conventional method such as heat sealing. In this case, in order to prevent the plumpness of the rice from being impaired by the pressing by the container body 2 and the container lid 3 after the rice has cooled, the high-temperature food (rice rice) in which the volume of the container body 2 is filled as described above. 4) It is desirable that the volume is larger than the volume of the rice 4. If the volume of the container body 2 is relatively large with respect to the amount of the rice 4, when the container lid 3 is sealed, the container lid 3 is made of, for example, a nonwoven fabric made of polypropylene. A sterilizing filter (not shown) having the following is interposed between the opening end 2b and the container lid 3, and the container lid 3 is sealed so that outside air is introduced only from the interposed portion of the sterilizing filter; When the rice in the container is cooled and the intervening portion of the sterilization filter is heat-sealed and completely sealed, it is prevented from being deformed to the side surface 2d of the container body 2 due to excessive internal pressure reduction accompanying cooling. thing Since it is further preferred, in particular the volume of the container body 2 to the amount of rice 4 during filling, for example, 2 times or more, is effective when a particular 2 to 3 times.
【００１７】容器本体２に充填された高温の食品４は御
飯に限定されるものではなく、加熱処理又は高温殺菌処
理等を行った後、密封されて流通される食品であればよ
い。The high-temperature food 4 filled in the container body 2 is not limited to rice, but may be any food that is subjected to heat treatment or high-temperature sterilization treatment and then sealed and distributed.
【００１８】この高温食品用容器１によれば、図１に示
すように容器内の御飯は複数の内リブ５の上に載置さ
れ、容器底から浮いた状態となっており、容器１内の御
飯４が冷えると図２に示すように御飯中の蒸気は水滴と
なって容器底に溜まるので、御飯４が水滴と接触してべ
とつくことがなく、更に、容器蓋３が容器本体２よりも
薄いプラスチックフィルムによって形成されており、底
面２ｃの各内リブ５が蛇腹のように機能すると共に、底
面２ｃが側面２ｄよりも薄く形成されているので、容器
内圧の減圧に伴って底面２ｃが容器内側に凹んだ状態と
なるが、側面２ｄは外観上ほとんど変化しない。According to the high-temperature food container 1, as shown in FIG. 1, the rice in the container is placed on the plurality of inner ribs 5 and floats from the bottom of the container. When the rice 4 cools, the steam in the rice becomes water droplets and accumulates on the bottom of the container as shown in FIG. 2, so that the rice 4 does not stick to the water droplets and the container lid 3 is Is formed of a thin plastic film, the inner ribs 5 of the bottom surface 2c function like bellows, and the bottom surface 2c is formed thinner than the side surface 2d. Although it is recessed inside the container, the side surface 2d hardly changes in appearance.
【００１９】従って、上記高温食品用容器１及び該容器
を使用した容器側面の変形防止方法によれば、加熱、殺
菌処理された直後の高温の御飯等の食品４がふっくら感
が損なわれないようにヘッドスペース（上部空間）を十
分にとって充填された容器本体２を上記容器蓋３で密封
した後、容器１内で食品４を放冷すると、容器１内の食
品４が冷めて容器１内が減圧されても容器本体２の底面
２ｃ及び容器蓋３が容器内側に凹んで容器１の容積が減
少するので、容器本体２の側面の凹みを防止することが
でき、更に十分なヘッドスペースが設けられているの
で、容器１内の食品４が冷えた後も容器本体２や容器蓋
３によって押圧されて、ふっくら感が損なわれることも
なく、例えば御飯のように加熱、殺菌処理等がされた直
後の食品を高温状態で密封する必要がある高温食品用容
器の容器側面の変形を容易、且つ確実に防止することが
できる。Therefore, according to the container 1 for hot food and the method for preventing deformation of the side of the container using the container, the food 4 such as hot rice immediately after the heating and sterilization treatment is not impaired. After the container body 2 filled with sufficient head space (upper space) is sealed with the container lid 3 and the food 4 is allowed to cool in the container 1, the food 4 in the container 1 cools and the inside of the container 1 is cooled. Even if the pressure is reduced, the bottom surface 2c of the container body 2 and the container lid 3 are recessed inside the container and the volume of the container 1 is reduced, so that the dent on the side surface of the container body 2 can be prevented, and a sufficient head space is provided. Therefore, even after the food 4 in the container 1 is cooled, the food 4 is pressed by the container body 2 and the container lid 3 so that the plump feeling is not impaired. For example, the food 4 is heated and sterilized like rice. Immediately after food The deformation of the container side surface of the hot food container that must be sealed easily, can be and reliably prevented.
【００２０】なお、本発明の高温食品用容器及び容器側
面の変形防止方法は、上記構成に制限されるものではな
く、本発明の要旨を逸脱しない範囲で種々変更して差し
支えない。The container for high-temperature food and the method for preventing deformation of the side surface of the container according to the present invention are not limited to the above-described constitution, and may be variously modified without departing from the gist of the present invention.
【００２１】[0021]
【発明の効果】本発明の高温食品用容器によれば、高温
の食品を容器内に密封収納した後、食品が冷えて容器内
圧が減圧しても、側面の凹みを防止することができ、更
に食品の冷却に伴って容器内に生じる水滴が食品に接触
するのを防止したり、容器内の食品が容器本体や容器蓋
によって押圧されてふっくら感などが損なわれないよう
にすることも可能である。従って、上記高温食品用容器
を使用した本発明の容器側面の変形防止方法によれば、
例えば御飯等のように加熱、殺菌処理等がされた直後の
食品を密封収容する必要がある高温食品用容器の容器本
体の側面の変形を容易、且つ確実に防止することができ
る。According to the container for high-temperature food of the present invention, after the high-temperature food is sealed and stored in the container, even if the food cools and the internal pressure of the container is reduced, the dent on the side surface can be prevented. Furthermore, it is possible to prevent water droplets generated in the container from coming into contact with the food as the food cools, and to prevent the food in the container from being pressed by the container body or the container lid and causing a plump feeling etc. It is. Therefore, according to the method for preventing deformation of the container side of the present invention using the high-temperature food container,
For example, it is possible to easily and reliably prevent deformation of the side surface of the container body of the high-temperature food container that needs to hermetically store food immediately after being subjected to heating, sterilization, and the like, such as rice.
【図１】本発明の一構成例を説明する高温食品用容器の
縦断面図である。FIG. 1 is a vertical cross-sectional view of a high-temperature food container illustrating one configuration example of the present invention.
【図２】上記容器内の食品が冷却した時の状態を示す上
記容器の縦断面図である。FIG. 2 is a longitudinal sectional view of the container showing a state when food in the container is cooled.
【図３】従来の高温食品用容器を説明する容器の縦断面
図である。FIG. 3 is a longitudinal sectional view of a container for explaining a conventional high-temperature food container.
【図４】上記容器内の食品が冷却した時の状態を示す上
記容器の縦断面図である。FIG. 4 is a longitudinal sectional view of the container, showing a state when food in the container is cooled.
１ 高温食品用容器 ２ 容器本体 ２ｃ 底面 ２ｄ 側面 ３ 容器蓋 ４ 食品 ５ 内リブ DESCRIPTION OF SYMBOLS 1 High temperature food container 2 Container main body 2c Bottom surface 2d Side surface 3 Container lid 4 Food 5 Inner rib
Claims (7)
後の高温の食品が充填された有底無蓋のプラスチック容
器本体を容器蓋で密封する高温食品用容器において、上
記プラスチック容器本体の底面に複数の同心円リング状
の内リブ又は渦巻き状の内リブを形成してなることを特
徴とする高温食品用容器。1. A high-temperature food container in which a closed-bottomed plastic container body filled with high-temperature food immediately after heat treatment or high-temperature sterilization treatment is sealed with a container cover. A container for high-temperature food, wherein a plurality of concentric ring-shaped inner ribs or spiral inner ribs are formed.
が容器側面の肉厚より薄くなるように形成された請求項
１記載の高温食品用容器。2. The high-temperature food container according to claim 1, wherein the thickness of the bottom surface of the plastic container body is smaller than the thickness of the side surface of the container.
された一の内リブとこれに隣接する内リブとの間隔が１
〜５ｍｍである請求項１又は２記載の高温食品用容器。3. The distance between one inner rib formed on the bottom surface of the plastic container main body and an inner rib adjacent thereto is one.
The high-temperature food container according to claim 1 or 2, which has a size of from 5 to 5 mm.
高温の食品の体積の１．３〜３倍である請求項１、２又
は３記載の高温食品用容器。4. The high-temperature food container according to claim 1, wherein the volume of the plastic container body is 1.3 to 3 times the volume of the high-temperature food.
いずれか１項記載の高温食品用容器。5. The high-temperature food container according to claim 1, wherein the food is rice.
品温が８０〜９０℃である時に上記容器蓋で密封する請
求項１乃至５のいずれか１項記載の高温食品用容器。6. The high-temperature food container according to claim 1, wherein the container is sealed with the container lid when the temperature of the high-temperature food filled in the container body is 80 to 90 ° C.
後の高温の食品を高温食品用容器に密封収容した後に、
該容器の内圧が上記食品の放冷によって減圧して上記容
器の側面が変形するのを防止する方法であって、上記高
温の食品が充填された請求項１乃至６のいずれか１項記
載の高温食品用容器の容器本体を上記容器蓋で密封した
後、上記容器本体の底面を容器内側に凹ませて上記容器
本体の側面の変形を防止することを特徴とする容器側面
の変形防止方法。7. After sealing the high-temperature food immediately after the heat treatment or high-temperature sterilization treatment in a high-temperature food container,
The method according to any one of claims 1 to 6, wherein the inner pressure of the container is reduced by allowing the food to cool, thereby preventing the side surface of the container from being deformed, wherein the high-temperature food is filled. A method for preventing deformation of a side surface of a container, comprising sealing a container body of the container for high-temperature food with the container lid, and then recessing a bottom surface of the container body inside the container to prevent deformation of a side surface of the container body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30659097A JP4110332B2 (en) | 1997-10-21 | 1997-10-21 | Container for high temperature cooked rice, method for preventing deformation of container side surface, and package for high temperature treated cooked rice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30659097A JP4110332B2 (en) | 1997-10-21 | 1997-10-21 | Container for high temperature cooked rice, method for preventing deformation of container side surface, and package for high temperature treated cooked rice |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11124120A true JPH11124120A (en) | 1999-05-11 |
| JP4110332B2 JP4110332B2 (en) | 2008-07-02 |
Family
ID=17958905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30659097A Expired - Fee Related JP4110332B2 (en) | 1997-10-21 | 1997-10-21 | Container for high temperature cooked rice, method for preventing deformation of container side surface, and package for high temperature treated cooked rice |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4110332B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003072732A (en) * | 2001-08-30 | 2003-03-12 | Toyo Ekco Kk | Packaging container |
| JP2012246030A (en) * | 2011-05-30 | 2012-12-13 | Dainippon Printing Co Ltd | Sheet molding tray, and tray containing food |
| JP2014105008A (en) * | 2012-11-28 | 2014-06-09 | Dainippon Printing Co Ltd | Sheet-molded tray and tray containing food product |
| JP2015214354A (en) * | 2014-05-09 | 2015-12-03 | 大日本印刷株式会社 | Sheet molding tray and food containing tray |
| KR200492327Y1 (en) * | 2019-12-26 | 2020-09-17 | 주식회사 단미푸드 | Packing Vessel for Cube Cheese |
-
1997
- 1997-10-21 JP JP30659097A patent/JP4110332B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003072732A (en) * | 2001-08-30 | 2003-03-12 | Toyo Ekco Kk | Packaging container |
| JP4684495B2 (en) * | 2001-08-30 | 2011-05-18 | 東洋アルミエコープロダクツ株式会社 | Packaging container |
| JP2012246030A (en) * | 2011-05-30 | 2012-12-13 | Dainippon Printing Co Ltd | Sheet molding tray, and tray containing food |
| JP2014105008A (en) * | 2012-11-28 | 2014-06-09 | Dainippon Printing Co Ltd | Sheet-molded tray and tray containing food product |
| JP2015214354A (en) * | 2014-05-09 | 2015-12-03 | 大日本印刷株式会社 | Sheet molding tray and food containing tray |
| KR200492327Y1 (en) * | 2019-12-26 | 2020-09-17 | 주식회사 단미푸드 | Packing Vessel for Cube Cheese |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4110332B2 (en) | 2008-07-02 |
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