JP2009078865A - Food packaging container for microwave oven - Google Patents

Food packaging container for microwave oven Download PDF

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JP2009078865A
JP2009078865A JP2008216111A JP2008216111A JP2009078865A JP 2009078865 A JP2009078865 A JP 2009078865A JP 2008216111 A JP2008216111 A JP 2008216111A JP 2008216111 A JP2008216111 A JP 2008216111A JP 2009078865 A JP2009078865 A JP 2009078865A
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container
lid
steam
container body
stepped
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JP4860673B2 (en
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Tooru Yatagai
通 谷田貝
Masanori Ogawa
政則 小川
Norio Otsuka
教男 大塚
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FP CHUPA CORP
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Abstract

<P>PROBLEM TO BE SOLVED: To easily discharge vapor pressure generated in a package at the time of heating and cooking by a microwave oven, and to easily manufacture a fitted package of a container body and a lid member. <P>SOLUTION: A lid 11 is fitted to a container body 1 in an inner engagement manner and there is provided a vapor discharging mechanism 41 in the inner and outer fitted portions 21, 31 of a container flange 3 of the container body 1 and a lid flange 13 of the lid 11 in the closed container body 1 for sealing the lid, and the lid 11. This vapor discharging mechanism 41 forms a container flange 3, a step 44, a covering step 45 or a concave step 46 and a cavity 47 where the lid flange 13 is bulged out above or below the container body 1 and inclined peripheral walls abutted to each other are spaced apart from each other by the vapor pressure generated in the container body 1. One of the step 44, the covering step 45, the concave step 46 and the cavity 47 is punched and formed with a vapor relief hole 42 released by the vapor pressure of a specified value or higher generated in the container body 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、飲食品等の内容物を収容した後に密封されパッケージされた食品包装容器自体によって、そのまま例えば電子レンジによって加熱調理するとき、内容物から発生した蒸気を外部に円滑に排出でき、また加熱調理によって調理品に所定の味を一層染み込ませるようにできる電子レンジ用食品包装容器の改良に関する。   The present invention can smoothly discharge steam generated from the contents to the outside when the food packaging container itself, which is sealed and packaged after containing contents such as food and drink, is cooked as it is, for example, by a microwave oven. The present invention relates to an improvement of a food packaging container for a microwave oven that can further infiltrate a predetermined taste into a cooked product by cooking.

従来から、各種の調理品を収容してパッケージされた食品容器そのものによって電子レンジで加熱調理でき、調理品から発生する蒸気等を容器外に排出するものとし、加熱調理後では容器を再度密封保持するようにした各種の食品包装容器が提案されている。例えば特許文献１乃至７である。   Conventionally, food can be cooked in a microwave oven using a packaged food container that contains various cooked products, and steam generated from the cooked product is discharged outside the container. After cooking, the container is kept sealed again Various kinds of food packaging containers have been proposed. For example, it is patent documents 1 thru | or 7.

特許文献１は、容器本体の開口部を閉塞している上面シートの開口した孔を圧力調整弁によって閉鎖しておき、電子レンジによる加熱調理時に発生する水蒸気圧によって圧力調整弁が剥がされて内部圧力が調整されるようにした圧力調整弁、外圧力調整弁を有する自動調理用パッケージ、及び該自動調理用パッケージで包装された飲食品である。特許文献２は、容器本体の蓋体に設けた貫通孔を帯封で閉塞しておき、電子レンジによる加温時の内圧上昇で貫通孔を外部に連通させるようにした帯封が施された包装容器である。特許文献３は、包装体に設けた貫通孔周囲に配した環状の凸部と、この凸部の外方にある開口部上縁との間で融着したフィルムにおいて、その融着時の接着力の大小の相違で包装体内部の圧力でフィルムの接着部分の一部を破壊して内部気体の放出路を設けるようにした包装体である。   In Patent Document 1, the opening of the top sheet that closes the opening of the container body is closed by a pressure adjustment valve, and the pressure adjustment valve is peeled off by the water vapor pressure generated during cooking by a microwave oven. There are a pressure regulating valve whose pressure is regulated, an automatic cooking package having an external pressure regulating valve, and a food and drink packaged with the automatic cooking package. Patent Document 2 discloses a packaging container in which a through-hole provided in a lid of a container body is closed with a band seal, and the through-hole communicates with the outside due to an increase in internal pressure during heating by a microwave oven. It is. Patent Document 3 discloses that a film fused between an annular convex portion arranged around a through-hole provided in a package and an upper edge of an opening outside the convex portion is bonded at the time of fusion. This is a packaging body in which a part of the adhesive portion of the film is broken by the pressure inside the packaging body due to the difference in force to provide an internal gas discharge path.

また特許文献４は、容器体と蓋体とを嵌合可能にし、容器体の立上壁部と蓋体の周鍔部とを密接可能にし、内部蒸気の圧力でその密接部分を浮上させて蒸気を排出させるようにした電子レンジ用食品容器である。特許文献５は、容器本体の開口フランジ部に外蓋のスカート部を密接させて設け、容器本体内で発生した蒸気による膨張空気圧で外蓋を持ち上げ、ストッパーリブに当接保持させることで開放させたスカート部の凸条溝にて水蒸気を除去し、外蓋を外すことなく、内容物を飛散させないようにした容器の外蓋である。特許文献６は、容器本体に嵌着した蓋体を、加熱調理時で膨張した空気によって押し上げるとき、蓋体の凹陥部を内外で連通させて膨張空気を排出させる電子レンジ用食品容器である。特許文献７は、容器本体の開口部を閉塞する蓋体にキャップを設け、キャップと蓋体との嵌合部位に形成した蓋体蒸気排出溝によってキャップと蓋体との間から内部空気、蒸気を排出する電子レンジ調理用システム容器である。   Patent Document 4 makes it possible to fit the container body and the lid body, make the rising wall portion of the container body and the peripheral flange portion of the lid body intimately close, and float the intimate portion by the pressure of the internal steam. It is a food container for microwave ovens that allows steam to be discharged. In Patent Document 5, the skirt portion of the outer lid is provided in close contact with the opening flange portion of the container main body, the outer lid is lifted by the expansion air pressure generated by the steam generated in the container main body, and is opened by being held in contact with the stopper rib. This is an outer lid of a container in which water vapor is removed at the ridge groove of the skirt and the contents are not scattered without removing the outer lid. Patent Document 6 is a food container for a microwave oven that discharges inflated air by communicating a recessed portion of the lid inside and outside when pushing up the lid fitted to the container body with air expanded during cooking. In Patent Document 7, a cap is provided on a lid that closes an opening of a container body, and internal air, steam is generated from between the cap and the lid by a lid vapor discharge groove formed at a fitting portion between the cap and the lid. It is a system container for microwave cooking that discharges.

しかして、特許文献１乃至３においては、容器体に設けた蒸気抜き孔を閉塞しているシール部材を容器体内部の蒸気圧等で強制的に剥離することで開放して蒸気等を排出するようにしている。このような蒸気圧力剥離シール式による場合では、容器体内部の蒸気圧力に対応したシールの接着力すなわち一定以上の蒸気圧力で剥離する接着力を調整してシールする必要があり、接着剤、その接着方法等の選定が面倒である。   Thus, in Patent Documents 1 to 3, the seal member that closes the vapor vent hole provided in the container body is opened by forcibly peeling it with the vapor pressure or the like inside the container body to discharge the vapor or the like. I am doing so. In the case of such a vapor pressure peeling seal type, it is necessary to adjust and seal the adhesive strength of the seal corresponding to the vapor pressure inside the container body, that is, the adhesive strength to be peeled off at a vapor pressure of a certain level or more. The selection of the bonding method is troublesome.

また、特許文献４乃至７においては、容器体とこれに嵌合する蓋体との嵌合部位は、容器体内で蒸気圧力等が発生していないときには密着させられている密封性が必要であり、逆に調理時等で蒸気圧力が発生したときにはその密着状態が解離されて放出路を形成するようにしている。このような圧力発生嵌合解離式による場合では、容器体と蓋体との嵌合部位の密着性が充分に確保されなければならず、相互間の密着を図るためにも、また解離時でも相互間では係合しているためにもそれぞれが精密に成形される必要がある。
特開平６−３２９１７９号公報 特開平２０００−３４４２６７号公報 特許第３９１４１３７号 特開２００４−３５０５１号公報 特開２００１−８０６８２号公報 特許第３００９８６３号 特開２００４−３０５７１６号公報 Further, in Patent Documents 4 to 7, the fitting part between the container body and the lid body fitted to the container body needs to be tightly sealed when vapor pressure or the like is not generated in the container body. Conversely, when steam pressure is generated during cooking or the like, the close contact state is dissociated to form a discharge path. In the case of such a pressure generation fitting dissociation type, the adhesion of the fitting part between the container body and the lid body must be sufficiently ensured, in order to achieve close contact with each other, even at the time of dissociation Since they are engaged with each other, each of them needs to be precisely formed.
JP-A-6-329179 JP 2000-344267 A Japanese Patent No. 3914137 JP 2004-35051 A JP 2001-80682 A Patent No. 3009863 JP 2004-305716 A

このような従来においての接着剤や熱融着等による調整された接着力の対応、嵌合部の精密成形等の面倒な手間を要している点を改良し、本発明では容器本体と、これの開口部で嵌合する蓋体とによるパッケージとするも、製造容易で、パッケージ内で生じる蒸気圧力を容易に排出でき、また電子レンジによる加熱調理法で一層の美味を味わえるようにすることにある。   In the present invention, the container body according to the present invention has been improved with respect to the conventional adhesive, heat adhesion, etc., and the need for troublesome labor such as precision molding of the fitting portion. Even if it is a package with a lid that fits in the opening of this, it is easy to manufacture, the steam pressure generated in the package can be easily discharged, and further deliciousness can be tasted by cooking with a microwave oven It is in.

すなわち、本発明は叙上のような点に鑑み創出されたもので、容器本体と、この容器本体に対してその開口部を施蓋すべく内嵌合式に嵌め合わせられる蓋体との間で、容器本体内部の蒸気圧力の増減で開閉される蒸気排出路を精密に成形することなく、これを容易に形成できるようにすることにある。また、調理品等の内容物を収容したときの顧客への販売、提供時における密閉性を維持でき、しかも電子レンジによる加熱調理後の再密閉を確実にして容器本体内の負圧状態をも維持し、調理機能を更に高められようにした電子レンジ用食品包装容器を提供することを目的とする。   That is, the present invention was created in view of the above points, and between a container main body and a cover body that can be fitted into an inner fitting type to cover the opening of the container main body. An object of the present invention is to make it possible to easily form a steam discharge passage that is opened and closed by increasing or decreasing the steam pressure inside the container body without precisely forming it. In addition, it is possible to maintain the airtightness at the time of selling and providing to customers when contents such as cooked goods are stored, and to ensure resealing after cooking with a microwave oven, and to maintain a negative pressure state in the container body An object of the present invention is to provide a food packaging container for a microwave oven that can maintain and enhance the cooking function.

上述した課題を解決するため、本発明にあっては、調理品Ｆを収容する容器本体１と、この容器本体１の開口部を施蓋する蓋体１１とを、容器本体１の周縁部に形成した容器フランジ部３に設けた外側嵌合部２１内に蓋体１１の周縁部に形成した蓋フランジ部１３に設けた内側嵌合部３１を強制的に嵌め入れることで容器本体１を密封する内嵌合式の包装容器であって、相互に接合する容器フランジ部３、蓋フランジ部１３の内外側嵌合部２１，３１の内方に蒸気排出機構４１を設けて成り、この蒸気排出機構４１は、容器フランジ部３、蓋フランジ部１３を容器本体１の上方あるいは下方に膨出させて、互いに当接している傾斜周側壁が容器本体１内で生じた蒸気圧力で解離する段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７を形成すると共に、段部４４、覆い段部４５、窪み段部４６、窪み部４７のいずれかに蒸気抜き孔４２を開穿したことを特徴とする。
段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７は円錐台形状に形成することができ、それぞれの傾斜周側壁あるいは頂壁は相互に密接し、嵌り込ませておくことができる。
蒸気抜き孔４２は孔状に開口形成したり、切り込みによる開閉弁４２Ａを備えて形成したりすることができ、また、蒸気抜き孔４２には、この蒸気抜き孔４２を開口形成した段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７、例えばその頂壁に当接する覆い段部４５・段部４４、あるいは窪み部４７・窪み段部４６、例えばその頂壁に蒸気抜き孔４２を閉塞する閉塞部４３を形成することができる。
蒸気抜き孔４２は開口形成の孔状とし、閉塞部４３は蒸気抜き孔４２内に嵌り込み、蒸気抜き孔４２の孔縁に密着する錐体栓状に形成することができる。
蓋体１１は、ドーム状の蓋収容部１２を膨出形成することができる。
段部４４・覆い段部４５相互間で当接する傾斜周側壁、頂壁あるいは窪み段部４６・窪み部４７相互間で当接する傾斜周側壁、頂壁それぞれは、容器本体１内で生じる蒸気圧力の一定圧力以上で解離されるように構成することができ、例えば円錐台形状の段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７それぞれの高さ、平面大きさ（径、幅員）は、所定の蒸気圧力値の付与で解離されるように設定することができる。
蒸気排出機構４１における段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７それぞれの基部周囲に、互いに強制的に嵌り合い、また容器本体１内で生じた蒸気圧力で嵌合状態が解除される溝状あるいは突条状の容器シール部５１、蓋シール部５２を設けることができる。
蒸気排出機構４１は、容器本体１の中心に対して点対称にして配置形成することができる。
容器本体１における容器収容部２の開口部には、開口部縁に段部状に窪ませた第２外側嵌合部２５を形成し、蓋体１１における蓋収容部１２の開口部には、段部状の第２外側嵌合部２５内に強制的に嵌まり込む断面で溝状に下方に突出している第２内側嵌合部３５を形成することができる。
また、段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７における傾斜周側壁に溝状の蒸気案内部４８を形成することができ、この蒸気案内部４８は、段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７の基端部位から頂壁部位に至るまで連続して形成することができる。 In order to solve the above-described problem, in the present invention, the container body 1 that houses the cooked product F and the lid body 11 that covers the opening of the container body 1 are attached to the peripheral portion of the container body 1. The container body 1 is sealed by forcibly fitting the inner fitting portion 31 provided on the lid flange portion 13 formed on the peripheral edge portion of the lid body 11 in the outer fitting portion 21 provided on the formed container flange portion 3. An internal fitting type packaging container comprising a steam discharge mechanism 41 provided inside the container flange portion 3 and the inner and outer fitting portions 21 and 31 of the lid flange portion 13 to be joined to each other. 41 is a step 44 in which the container flange portion 3 and the lid flange portion 13 bulge upward or downward of the container body 1 and the inclined peripheral side walls that are in contact with each other are dissociated by the vapor pressure generated in the container body 1.・ Cover step 45 or hollow step 46 ・ dent 4 To form a stepped portion 44, covering the stepped portion 45, the depression stepped portions 46, characterized by being perforated in the vapor vent hole 42 to either the recess 47.
The stepped portion 44, the cover stepped portion 45, or the recessed stepped portion 46 and the recessed portion 47 can be formed in a truncated cone shape, and the inclined peripheral side walls or the top wall can be closely fitted to each other. it can.
The steam vent hole 42 can be formed in the shape of a hole, or can be formed with an on-off valve 42A by cutting, and the steam vent hole 42 has a step portion 44 in which the steam vent hole 42 is formed. · Cover step 45 or recess step 46 · recess 47, for example, cover step 45 · step 44 that contacts the top wall, or recess 47 · recess step 46, for example, a vent hole in the top wall A closing portion 43 that closes 42 can be formed.
The steam vent hole 42 can be formed into an opening-forming hole shape, and the blocking portion 43 can be formed into a conical plug shape that fits into the steam vent hole 42 and adheres closely to the edge of the steam vent hole 42.
The lid 11 can bulge and form a dome-shaped lid housing portion 12.
Inclined peripheral side walls and top walls that contact each other between the stepped portion 44 and the cover stepped portion 45, or the inclined peripheral side walls that contact each other between the stepped portion 46 and the recessed portion 47, and the top wall respectively generate steam pressure generated in the container body 1. Can be configured to be dissociated at a certain pressure or higher. For example, the height and plane size (diameter, diameter) of the truncated cone-shaped step 44 and the cover step 45, or the hollow step 46 and the hollow portion 47, respectively. (Width) can be set to be dissociated by applying a predetermined vapor pressure value.
The steam exhaust mechanism 41 is forcibly fitted to each other around the bases of the stepped portion 44 and the cover stepped portion 45, or the recessed stepped portion 46 and the recessed portion 47, and is fitted by the steam pressure generated in the container body 1. A groove-shaped or ridge-shaped container seal portion 51 and a lid seal portion 52 can be provided.
The steam discharge mechanism 41 can be arranged and formed with point symmetry with respect to the center of the container body 1.
In the opening of the container housing part 2 in the container main body 1, a second outer fitting part 25 that is recessed in a step shape is formed on the edge of the opening, and in the opening of the lid housing part 12 in the lid body 11, It is possible to form the second inner fitting portion 35 that protrudes downward in the shape of a groove in a cross-section that is forcibly fitted into the stepped second outer fitting portion 25.
Further, a groove-like steam guide portion 48 can be formed on the inclined peripheral side wall of the step portion 44, the cover step portion 45, or the recess step portion 46 and the recess portion 47. It can be formed continuously from the base end portion of the cover step 45 or the recess step portion 46 and the recess portion 47 to the top wall portion.

以上のように構成された本発明に係る電子レンジ用食品包装容器にあって、調理品Ｆが収容された容器本体１に対して蓋体１１を、内外側嵌合部２１，３１によっていわゆる内嵌合式に嵌め合わせることで調理品Ｆを密封包装させる。この密封包装状態で容器本体１内に例えば調味水等を収容しておいて電子レンジで加熱するとき、容器本体１内で生じる蒸気は調理品Ｆを蒸らし状態で調理させ、またその蒸気圧力が一定以上になると蒸気排出機構４１が開放され、これによって形成される蒸気排出路を経て過熱蒸気を外部に排出させる。
電子レンジによる加熱によって容器本体１内で生じた蒸気は、収容した調理品Ｆに対して蒸らし調理を行い、蒸気圧力が一定以上になると蒸気排出機構４１において、内外側嵌合部２１，３１による密封状態を維持したままで、段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７相互間の傾斜周側壁、頂壁を解離させて蒸気抜き孔４２に通じる蒸気排出路を形成させる。蒸気の排出によって、蒸気圧力に伴う容器本体１、蓋体１１それぞれの破損、損傷等、例えば蓋体１１の過度の膨張、蓋体１１の離反・分離・外れ、内容物の噴出等が防止され、所定時間の経過で蒸らし調理が終了する。
調理終了後では、容器本体１、蓋体１１内は負圧状態になり、蒸気抜き孔４２は閉塞部４３によって閉塞され、段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７相互間の傾斜周側壁、頂壁がそれぞれ当接し、容器本体１等内を密封する。負圧状態の密封は、調理品Ｆに対して調味水等を一層浸透させ、調理品Ｆの美味を増大させる。
蒸気排出機構４１において、孔状に開口形成された蒸気抜き孔４２は蒸気排出を円滑にして排出能力を高め、開閉弁４２Ａが設けられた蒸気抜き孔４２は、開口形成によるときの孔状とする打ち抜き部分を残置させず、これが容器本体１、蓋体１１等に付着するトラブルを未然に回避させる。
また、段部４４・覆い段部４５相互間あるいは窪み段部４６・窪み部４７相互間のそれぞれの嵌り合いは、それぞれの傾斜周側壁相互を密接させて容器本体１内で蒸気が発生していないとき、調理後の負圧状態のとき等では蒸気排出路を形成せず、蒸気抜き孔４２を閉塞させ、容器本体１内等を密封させる。
段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７それぞれの基部周囲の容器シール部５１、蓋シール部５２は、相互間で嵌合していることで容器本体１内等の密封状態を一層確実に保持し、一定以上の蒸気圧力の負荷時では離反して蒸気排出路を形成させる。
ドーム状の蓋収容部１２は容器本体１内で生じた蒸気圧力の変動を緩慢、均一にし、調理品Ｆ全体に対する加熱効果を発揮させ、また、容器本体１の中心に対する点対称位置に配置の蒸気排出機構４１とも相俟ち、加熱時の蒸気排出、過熱蒸気の対流等によって容器本体１全体に渡っての蒸気、加熱の均一性を良好にさせる。
容器本体１の容器収容部２と蓋体１１の蓋収容部１２との開口部相互で嵌り合う第２外側嵌合部２５、第２内側嵌合部３５は、容器本体１、蓋体１１の内外を内外側嵌合部２１，３１と共に一層密封し、容器本体１内外の密封状態を維持させる。
段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７の傾斜周側壁に形成した蒸気案内部４８は、密接している段部４４・覆い段部４５相互間、あるいは窪み段部４６・窪み部４７相互間で解離する以前に生じ得る急激な容器本体１内の過圧状態の蒸気を事前に排出案内させる。 In the food packaging container for a microwave oven according to the present invention configured as described above, the lid body 11 is connected to the container body 1 in which the cooked product F is accommodated by the inner and outer fitting portions 21 and 31. The food F is hermetically packaged by fitting in a fitting manner. When, for example, seasoned water or the like is stored in the container body 1 in this sealed packaging state and heated in a microwave oven, the steam generated in the container body 1 cooks the cooked product F in a steamed state, and the steam pressure is When the pressure exceeds a certain level, the steam discharge mechanism 41 is opened, and superheated steam is discharged to the outside through a steam discharge path formed thereby.
Steam generated in the container main body 1 by heating by the microwave oven is steamed and cooked with respect to the contained cooking product F. When the steam pressure becomes a certain level or more, the steam discharge mechanism 41 uses the inner and outer fitting parts 21 and 31. While maintaining the sealed state, a steam discharge passage that leads to the steam vent hole 42 is formed by dissociating the inclined peripheral side wall and the top wall between the stepped portion 44 and the covering stepped portion 45 or between the recessed stepped portion 46 and the recessed portion 47. Let By discharging the steam, the container body 1 and the lid body 11 are damaged or damaged due to the steam pressure, for example, excessive expansion of the lid body 11, separation / separation / detachment of the lid body 11, ejection of contents, and the like are prevented. The steaming cooking is finished after a predetermined time.
After cooking is completed, the container body 1 and the lid 11 are in a negative pressure state, and the steam vent hole 42 is closed by the closing portion 43, and the stepped portion 44, the covering stepped portion 45, or the recessed stepped portion 46, the recessed portion 47. The inclined peripheral side wall and the top wall are in contact with each other to seal the inside of the container body 1 and the like. Sealing in the negative pressure state further infiltrates seasoning water or the like into the cooked product F, and increases the deliciousness of the cooked product F.
In the steam discharge mechanism 41, the steam vent hole 42 formed in a hole shape smoothes the steam discharge and enhances the discharge capability, and the steam vent hole 42 provided with the on-off valve 42A has a hole shape when the opening is formed. The punching portion to be left is not left, and the trouble of adhering to the container main body 1, the lid body 11 and the like can be avoided in advance.
In addition, the fitting between the stepped portion 44 and the covering stepped portion 45 or between the depressed stepped portion 46 and the depressed portion 47 causes the respective inclined peripheral side walls to be in close contact with each other so that steam is generated in the container body 1. When there is not, a steam discharge path is not formed in a negative pressure state after cooking, etc., the steam vent hole 42 is closed, and the inside of the container body 1 is sealed.
The container seal portion 51 and the lid seal portion 52 around the base of each of the step portion 44 and the cover step portion 45, or the depression step portion 46 and the depression portion 47 are fitted to each other so that the inside of the container body 1 and the like The sealed state is more reliably maintained, and when the steam pressure exceeds a certain level, the steam discharge path is formed apart.
The dome-shaped lid accommodating portion 12 makes the fluctuation of the steam pressure generated in the container body 1 slow and uniform, exerts a heating effect on the entire cooked product F, and is disposed at a point-symmetrical position with respect to the center of the container body 1. Together with the steam discharge mechanism 41, it is possible to improve the uniformity of steam and heating over the entire container body 1 by discharging steam during heating, convection of superheated steam, and the like.
The second outer fitting portion 25 and the second inner fitting portion 35 that fit in the openings of the container accommodating portion 2 of the container main body 1 and the lid accommodating portion 12 of the lid 11 are the same as those of the container main body 1 and the lid 11. The inside and outside are further sealed together with the inside and outside fitting portions 21 and 31, and the sealed state inside and outside the container body 1 is maintained.
The steam guide portion 48 formed on the inclined peripheral side wall of the step portion 44 / cover step portion 45, or the depression step portion 46 / dent portion 47 is in close contact with each other or between the step portions 44 / cover step portions 45 or the depression step portion. 46 and the rapid depression of the overpressured vapor in the container body 1 that may occur before dissociating between the depressions 47 are guided in advance.

本発明によれば、電子レンジによる加熱調理に適するように容器本体１に対して内嵌合式に蓋体１１を嵌め合わせることで調理品Ｆを密封包装した状態で調理するとき、電子レンジによる加熱調理によって容器本体１内で生じる蒸気によって調理品Ｆを蒸らすことができる。しかも過熱蒸気は蒸気排出機構４１によって外部に容易に排出でき、容器の損傷等もなく、調理後では再密閉を確実にして容器本体１内の負圧状態をも維持し、調理品Ｆに対して調味水等を一層浸透させ、調理機能を更に高めることができる。   According to the present invention, when cooking in a state where the food F is hermetically packaged by fitting the lid body 11 into the container main body 1 so as to be suitable for cooking by heating in a microwave oven, heating by a microwave oven is performed. The cooked product F can be steamed by steam generated in the container body 1 by cooking. In addition, the superheated steam can be easily discharged to the outside by the steam discharge mechanism 41, and there is no damage to the container, and after cooking, the resealing is ensured and the negative pressure state in the container body 1 is maintained. Seasoning water and the like can be further infiltrated to further enhance the cooking function.

また、蒸気排出機構４１は、容器本体１、蓋体１１それぞれの周縁に形成してある容器フランジ部３、蓋フランジ部１３に設けてあることで、容器本体１内部の蒸気圧力の増減で開閉される蒸気排出路を精密に成形する必要がなく、これを容易に形成できる。そればかりでなく、調理品Ｆ等の内容物を収容したときの顧客への販売、提供等の店頭においても密閉性を維持でき、衛生的であり、しかも包装容器そのもので電子レンジによる加熱調理が可能であるから、簡便に使用、供食可能である。   Further, the steam discharge mechanism 41 is provided on the container flange portion 3 and the lid flange portion 13 formed on the peripheral edges of the container main body 1 and the lid body 11, so that the steam discharge mechanism 41 can be opened and closed by increasing or decreasing the steam pressure inside the container main body 1. It is not necessary to precisely form the steam discharge path to be formed, and this can be easily formed. Not only that, it is possible to maintain the sealing property at stores such as sales and provision to customers when contents such as cooked food F are stored, and it is hygienic, and cooking with a microwave oven is possible with the packaging container itself. Since it is possible, it can be used and eaten easily.

すなわち、これは本発明が、容器本体１に蓋体１１を内嵌合式に嵌め合わせ、密封する容器本体１、蓋体１１にあって、相互に接合する容器本体１の容器フランジ部３、蓋体１１の蓋フランジ部１３の内外側嵌合部２１，３１の内方に蒸気排出機構４１を設けて成り、この蒸気排出機構４１は、容器フランジ部３、蓋フランジ部１３を容器本体１の上方あるいは下方に膨出させて容器本体１内で生じた蒸気圧力で、互いに当接している傾斜周側壁が解離する段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７を形成すると共に、段部４４、覆い段部４５、窪み段部４６、窪み部４７のいずれかに蒸気抜き孔４２を開穿したからである。これによって、容器本体１と蓋体１１との密封性の確保、発生蒸気による調理品Ｆに対する蒸らし調理、過熱蒸気の円滑排出、調理後の負圧状態による調理の効率性等を得ることができる。   That is, this is because the present invention has a container body 1 that fits and seals a lid 11 on the container body 1 in an inner fitting manner, and the container flange 1 3 and the lid of the container body 1 that are joined to each other. A steam discharge mechanism 41 is provided on the inner side of the inner and outer fitting portions 21 and 31 of the lid flange portion 13 of the body 11, and the steam discharge mechanism 41 connects the container flange portion 3 and the lid flange portion 13 to the container body 1. A step 44, a cover step 45, or a dent step 46, and a dent portion 47, in which the inclined peripheral side walls that are in contact with each other dissociate, are formed by the vapor pressure generated in the container body 1 by bulging upward or downward. This is because the vapor vent hole 42 is opened in any one of the step 44, the cover step 45, the depression step 46, and the depression 47. As a result, it is possible to ensure sealing performance between the container body 1 and the lid 11, steam cooking of the cooked product F by generated steam, smooth discharge of superheated steam, cooking efficiency in a negative pressure state after cooking, and the like. .

また、過熱蒸気を排出させる蒸気排出機構４１は、容器本体１と蓋体１１とを嵌め合わせる内外側嵌合部２１，３１の内方である容器フランジ部３、蓋フランジ部１３に設けてあるから、従来のように容器本体１と蓋体１１との収容部分の嵌め合わせ部位に強制的に開閉する蒸気排出路を形成することでその精密形成が要求されたのに比し、簡便に形成配置できる。   Further, the steam discharge mechanism 41 for discharging the superheated steam is provided in the container flange portion 3 and the lid flange portion 13 which are inside the inner and outer fitting portions 21 and 31 for fitting the container body 1 and the lid body 11 together. Therefore, it is easier to form than the conventional method where the precise formation is required by forming a steam discharge passage that forcibly opens and closes at the fitting portion of the accommodating portion of the container body 1 and the lid body 11 as in the prior art. Can be placed.

蒸気排出機構４１は、段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７それぞれを円錐台形状に形成し、それぞれの傾斜周側壁、頂壁相互を密接し、嵌り込ませるから、蒸気圧力が生じていないときには容器本体１、蓋体１１との嵌め合いによる密封性を維持し、蒸気圧力が一定以上になるとそれによって解離して、蒸気抜き孔４２を開放して蒸気排出路を形成する。そのため、容器本体１、蓋体１１等内で生じた過熱蒸気を外部に円滑に排出でき、容器本体１、蓋体１１を損傷等もせず、過度に膨張したり、蓋体１１が外れたり、調理品Ｆ等の収容物が外部に噴出することもない。   In the steam discharge mechanism 41, the stepped portion 44, the cover stepped portion 45, or the recessed stepped portion 46 and the recessed portion 47 are each formed in a truncated cone shape, and the inclined peripheral side walls and the top wall are brought into close contact with each other. When the steam pressure is not generated, the sealing performance by fitting with the container body 1 and the lid body 11 is maintained, and when the steam pressure exceeds a certain level, it is dissociated and the steam vent hole 42 is opened to open the steam discharge path. Form. Therefore, the superheated steam generated in the container body 1 and the lid body 11 can be smoothly discharged to the outside, and the container body 1 and the lid body 11 are not excessively inflated without being damaged, or the lid body 11 is removed. The contents such as the cooked food F are not spouted outside.

そればかりでなく、段部４４・覆い段部４５相互間、あるいは窪み段部４６・窪み部４７相互間それぞれの高さ、平面大きさ（径、幅員）による傾斜周側壁、頂壁相互の密接度合いによって、内部で生じた蒸気圧力の大小による解離時、すなわち排出時を設定調整でき、調理品Ｆそれぞれによって異なることがある蒸らし状態の時間、圧力その他に対応可能である。   In addition, the inclined peripheral side wall and the top wall are in close contact with each other depending on the height and plane size (diameter and width) between the step 44 and the cover step 45 or between the recess step 46 and the recess 47. Depending on the degree, it is possible to set and adjust the time of dissociation due to the magnitude of the steam pressure generated inside, that is, the time of discharge, and it is possible to cope with the steaming time, pressure, etc., which may differ depending on the food F.

孔状に開口形成の蒸気抜き孔４２は外部への蒸気の排出を円滑にし、また開閉弁４２Ａを備えた場合には打ち抜き等による打抜部材の残置により生じ得る不都合がないばかりでなく、所定の方向に蒸気を排出案内させる。   The steam vent hole 42 formed in a hole shape facilitates the discharge of steam to the outside, and in the case where the on-off valve 42A is provided, there are not only inconveniences that may occur due to the leaving of the punching member by punching or the like, Guide the steam in the direction of.

蓋体１１の蓋収容部１２をドーム状に形成することで、容器本体１内で生じる蒸気圧力の変動を緩慢にし、内部の蒸気圧力の均一性に役立ち、調理品Ｆに対しての蒸気による加熱効果を満遍なく施すことができる。しかも、蒸気排出機構４１を容器本体１に対する点対称位置に配置することと相俟ち、容器本体１等内からの蒸気の排出に伴う対流を容器本体１内の全体で一層均一化させることができる。更には、調理後で容器本体１内等が急激に低下して容器本体１内等が収縮することに伴う変形のおそれがあっても、ドーム部分が窪むことで容器本体１、蓋体１１全体の変形を抑制するのに役立つ。   By forming the lid accommodating portion 12 of the lid body 11 in a dome shape, the fluctuation of the vapor pressure generated in the container body 1 is moderated, and it helps the uniformity of the internal vapor pressure. The heating effect can be applied evenly. Moreover, in combination with the arrangement of the vapor discharge mechanism 41 at a point-symmetrical position with respect to the container main body 1, the convection associated with the discharge of the vapor from the container main body 1 etc. can be made more uniform throughout the container main body 1. it can. Furthermore, even if there is a risk of deformation due to a sudden drop in the container body 1 after cooking and the inside of the container body 1 contracting, the container body 1 and the lid body 11 are formed by the depression of the dome. Helps suppress overall deformation.

蒸気排出機構４１における段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７それぞれの基部周囲に、互いに強制的に嵌り合い、また容器本体１内で生じた蒸気圧力で嵌合状態が解除される溝状あるいは突条状の容器シール部５１、蓋シール部５２を設けることで、蒸気排出機構４１を経ての調理品Ｆ中の液状成分の外部への漏出を防止できる。特に、商品として提供するときの輸送、陳列その他のハンドリング時において、容器内外の密封性を一層有効に維持でき、更に過熱蒸気の排出開始時を設定する蒸気圧力値を調整できる。   The steam exhaust mechanism 41 is forcibly fitted to each other around the bases of the stepped portion 44 and the cover stepped portion 45, or the recessed stepped portion 46 and the recessed portion 47, and is fitted by the steam pressure generated in the container body 1. By providing the groove-shaped or ridge-shaped container seal portion 51 and the lid seal portion 52 that are released, liquid components in the cooked product F can be prevented from leaking to the outside via the steam discharge mechanism 41. In particular, during transportation, display, and other handling when providing the product as a product, it is possible to more effectively maintain the sealing performance inside and outside the container, and it is possible to adjust the steam pressure value that sets the start time of discharging superheated steam.

また、容器本体１、蓋体１１の開口部縁における第２外側嵌合部２５、第２内側嵌合部３５による嵌り込みは、容器本体１、蓋体１１相互間の密封性を一層増大させる。すなわち、蓋体１１における蓋収容部１２の開口部外縁には、段部状の第２外側嵌合部２５内に強制的に嵌まり込む断面で溝状に下方に突出している第２内側嵌合部３５を形成することで、容器本体１内に収容した調理品Ｆに含まれる液状成分の漏洩等を一層有効に防止できる。   Moreover, the fitting by the 2nd outer side fitting part 25 and the 2nd inner side fitting part 35 in the opening edge of the container main body 1 and the cover body 11 further increases the sealing performance between the container main body 1 and the cover body 11. . That is, the second inner fitting projecting downward in the shape of a groove in a cross-section that is forcibly fitted into the stepped second outer fitting portion 25 at the outer edge of the opening of the lid housing portion 12 in the lid body 11. By forming the joint portion 35, leakage of the liquid component contained in the cooked product F accommodated in the container body 1 can be more effectively prevented.

段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７における傾斜周側壁に溝状の蒸気案内部４８を形成してあるから、相互で密着している段部４４・覆い段部４５それぞれ、窪み段部４６・窪み部４７それぞれにおける傾斜周側壁による密封性が図られていても、急激な加圧状態にある容器本体１内の過圧蒸気を事前に排出案内できる。すなわち、例えば大容量の電子レンジを使用した場合に容器本体１内が急激な過圧状態になることで傾斜周側壁が解離することなく、そのまま維持されることによって容器本体１から蓋体１１が突然に外れてしまう事態や調理品Ｆの未調理等を未然に防止できる。   Since the groove-shaped steam guide portion 48 is formed on the inclined peripheral side wall of the step portion 44 / cover step portion 45, or the step portion 46 / dent portion 47, the step portion 44 / cover step portion that are in close contact with each other. 45, even if the sealing performance by the inclined peripheral side walls in each of the recessed step portion 46 and the recessed portion 47 is achieved, the overpressure steam in the container main body 1 in a rapidly pressurized state can be discharged and guided in advance. That is, for example, when a large-capacity microwave oven is used, the container body 1 is maintained as it is without dissociating the inclined peripheral side wall due to a sudden overpressure in the container body 1. It is possible to prevent a situation in which the food item is suddenly removed or the cooking product F is not cooked.

この蒸気案内部４８は、段部４４・覆い段部４５、あるいは窪み段部４６・窪み部４７の基端部位から頂壁部位に至るまで連続して形成してあるから、容器本体１内で生じた過圧蒸気を頂壁にある蒸気抜き孔４２に円滑に案内させて逐次排出させる。これにより、急激に過飽和的な蒸気が容器本体１内で発生し、この発生した過飽和蒸気によっても段部４４・覆い段部４５相互間、窪み段部４６・窪み部４７相互間の傾斜周側壁が解離されず、また、その解離に時間的な余裕がないとしても、その過飽和蒸気を安全、円滑に外部に排出できる。   The steam guide portion 48 is formed continuously from the base end portion to the top wall portion of the stepped portion 44, the cover stepped portion 45, or the recessed stepped portion 46, and the recessed portion 47. The generated overpressure steam is smoothly guided to the steam vent hole 42 on the top wall and sequentially discharged. As a result, a supersaturated steam is suddenly generated in the container body 1, and the inclined peripheral side wall between the stepped portion 44 and the covering stepped portion 45 and between the recessed stepped portion 46 and the recessed portion 47 is also generated by the generated supersaturated steam. Is not dissociated, and even if there is no time for dissociation, the supersaturated vapor can be discharged to the outside safely and smoothly.

尚、上記の課題を解決するための機構、発明の効果の項それぞれにおいて付記した符号は、図面中に記載した構成各部を示す部分との参照を容易にするために付したもので、図面中の符号によって示された構造・形状に本発明が限定されるものではない。   Note that the reference numerals added in the sections for the mechanism for solving the above-mentioned problems and the effects of the invention are given for easy reference to the parts indicating the respective constituent parts described in the drawings. The present invention is not limited to the structure / shape indicated by the reference numeral.

以下、図面を参照して本発明を実施するための最良の一形態を説明するに、図において示される符号１は、電子レンジで加熱調理される各種の調理品Ｆが封入された状態で、いわゆる内嵌合式に嵌め合わされる蓋体１１によって開口部が施蓋される容器本体である。この容器本体１は、図示のように平面からみた全体では基本的には例えばほぼ正方形を呈しており、調理品Ｆまたはその素材等を収容する平面でほぼ円形状を呈する窪みとなって中央部に形成されている容器収容部２と、この容器収容部２周囲でほぼ平坦状になって形成され、蓋体１１と嵌合する外側嵌合部２１を備えている容器フランジ部３とから成っている。   Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. Reference numeral 1 shown in the figure is a state in which various cooked products F to be cooked in a microwave oven are enclosed, It is a container main body in which an opening part is covered with the cover body 11 fitted by what is called an internal fitting type. As shown in the figure, the container body 1 basically has a substantially square shape, for example, as a whole, and is formed into a substantially circular recess on the flat surface that accommodates the cooked food F or its ingredients. And a container flange portion 3 that is formed in a substantially flat shape around the container storage portion 2 and includes an outer fitting portion 21 that fits the lid body 11. ing.

一方、蓋体１１は、容器本体１とほぼ相似形の平面からみて基本的にはほぼ正方形状を呈しており、容器本体１における容器収容部２と同様に、調理品Ｆを収容する平面でほぼ円形状を呈し、容器収容部２に対応して上方にドーム状に膨出されている蓋収容部１２と、この蓋収容部１２周囲でほぼ平坦状になって形成され、容器本体１における外側嵌合部２１内にほぼ強制的に嵌り込む内側嵌合部３１を備えている蓋フランジ部１３とから成っている。蓋収容部１２はドーム状に上方に膨出形成することで、容器本体１内で生じる蒸気による調理品Ｆに対する蒸らし効果を一層有効にする（図１、図２参照）。   On the other hand, the lid 11 basically has a substantially square shape when viewed from a plane that is substantially similar to the container body 1, and is a plane that accommodates the cooked product F in the same manner as the container housing portion 2 in the container body 1. A lid accommodating portion 12 that has a substantially circular shape and bulges upward in a dome shape corresponding to the container accommodating portion 2, and is formed in a substantially flat shape around the lid accommodating portion 12. The cover flange portion 13 includes an inner fitting portion 31 that is almost forcibly fitted into the outer fitting portion 21. The lid accommodating portion 12 is formed to bulge upward in a dome shape, thereby further enhancing the steaming effect on the cooked product F by the steam generated in the container body 1 (see FIGS. 1 and 2).

尚、図示を省略したが、容器本体１、蓋体１１の平面形状は図示例に限定されるものではなく、全体の平面形状が例えば基本的には円形を呈するものとし、後述する蒸気排出機構４１を、容器収容部２、蓋収容部１２それぞれの周縁の一部を内方に抉るようにして形成した凹状部位に設けるようにすることも可能である。   Although not shown in the drawings, the planar shapes of the container body 1 and the lid 11 are not limited to the illustrated examples, and the overall planar shape is basically circular, for example, and a steam discharge mechanism described later. It is also possible to provide 41 in the concave part formed so that a part of periphery of each of the container accommodating part 2 and the lid accommodating part 12 may be turned inward.

また、これらの容器本体１、蓋体１１それぞれは電子レンジによる電磁加熱によっては溶融されない耐熱性を備え、内外側嵌合部２１，３１による当接部分の密着性が維持されるように熱膨張率もほぼ同様となるように共に同効材にて形成されている。例えば延伸ポリスチレン樹脂（ＯＰＳ）、耐熱延伸ポリスチレン樹脂（耐熱ＯＰＳ）、ポリプロピレン樹脂等の耐熱性の良好な所定肉厚のプラスチックシートを素材として圧空成形、真空成形等のサーモフォーミング法等によって成形してある。   In addition, each of the container body 1 and the lid body 11 has a heat resistance that is not melted by electromagnetic heating by a microwave oven, and is thermally expanded so that the adhesiveness of the contact portion by the inner and outer fitting portions 21 and 31 is maintained. Both are formed of the same effect material so that the rate is substantially the same. For example, a plastic sheet having a predetermined thickness with good heat resistance such as stretched polystyrene resin (OPS), heat-resistant stretched polystyrene resin (heat-resistant OPS), polypropylene resin, etc. is molded by thermoforming methods such as pressure forming and vacuum forming. is there.

容器本体１における容器収容部２周壁、蓋体１１における蓋収容部１２周壁それぞれには、それら自身の補強を図るために、例えば上下方向に沿って凹状に窪ませあるいは突出させた容器補強溝４、蓋補強溝１４を形成してある。また容器本体１における容器収容部２と容器フランジ部３との境界部分では容器収容部２上縁部に位置させて、外方に膨出させた適数のスタック５を所定間隔毎に形成してある。   In order to reinforce the container housing portion 2 circumferential wall of the container body 1 and the lid housing portion 12 circumferential wall of the lid body 11, for example, a container reinforcing groove 4 that is recessed or protruded in a concave shape along the vertical direction. The lid reinforcing groove 14 is formed. Further, an appropriate number of stacks 5 bulging outward are formed at predetermined intervals at the boundary between the container housing part 2 and the container flange part 3 in the container body 1 and positioned at the upper edge of the container housing part 2. It is.

容器本体１と蓋体１１とをほぼ密閉状態で嵌め合わせる内外側嵌合部２１，３１は、図示にあって容器本体１、蓋体１１の周縁部に沿って平面からみてほぼ正方形状を呈する枠状に配置形成されている（図２参照）。そして、外側嵌合部２１は、容器本体１の周縁部では、容器フランジ部３縁から立ち上がり、容器本体１の内方側に僅かに傾斜している外嵌合傾斜壁２２を形成すると共に、外嵌合傾斜壁２２の上縁から平坦状に連続している容器口端縁２３を形成し、この容器口端縁２３の外縁から折り下がり状に連続している容器縁部２４を形成してある。また、内側嵌合部３１は、蓋体１１の周縁部では、蓋体１１の蓋収容部１２縁から連続していて容器本体１における容器フランジ部３の上面に当接する平坦状の蓋フランジ部１３縁から立ち上がり、外嵌合傾斜壁２２の内側面に当接するように、蓋体１１の内方側に僅かに傾斜している内嵌合傾斜壁３２を形成し、この内嵌合傾斜壁３２の上縁から平坦状に連続していて、容器口端縁２３の上面に当接する蓋口端縁３３を形成してある。   Inner and outer fitting portions 21 and 31 for fitting the container main body 1 and the lid body 11 in a substantially sealed state are shown in the figure and have a substantially square shape when viewed from the plane along the peripheral edge of the container main body 1 and the lid body 11. It is arranged and formed in a frame shape (see FIG. 2). And the outer fitting part 21 rises from the edge of the container flange part 3 at the peripheral part of the container body 1 and forms an outer fitting inclined wall 22 that is slightly inclined to the inner side of the container body 1. A container mouth edge 23 is formed which is continuous in a flat shape from the upper edge of the outer fitting inclined wall 22, and a container edge 24 is formed which is continuous in a folded shape from the outer edge of the container mouth edge 23. It is. Further, the inner fitting portion 31 is a flat lid flange portion that is continuous from the edge of the lid housing portion 12 of the lid body 11 at the peripheral edge portion of the lid body 11 and abuts against the upper surface of the container flange portion 3 in the container body 1. An inner fitting inclined wall 32 that is slightly inclined to the inner side of the lid 11 is formed so as to rise from the 13th edge and come into contact with the inner surface of the outer fitting inclined wall 22, and this inner fitting inclined wall A lid end edge 33 that is flat from the upper edge of 32 and contacts the upper surface of the container end edge 23 is formed.

そして、この内外側嵌合部２１，３１では、外嵌合傾斜壁２２における上縁の内法幅員は内嵌合傾斜壁３２における下縁の外法幅員に比しやや小さく、外嵌合傾斜壁２２における下縁の内法幅員は内嵌合傾斜壁３２における下縁の外法幅員にほぼ等しくしてある。そして、外嵌合傾斜壁２２の上縁に内嵌合傾斜壁３２の下縁を突き当てた状態で蓋体１１を容器本体１側に強制的にでも押し込むことで、容器本体１の開口部を蓋体１１にて施蓋できるようにしてある。このようにして容器本体１を蓋体１１にて施蓋することでほぼ密封状態となって例えば陳列販売時等での衛生状態を確保し、加熱調理に際しては、蓋体１１を容器本体１から強制的にでも取り外し、例えば加熱調理に際しての調理水・調味水等の充填、加熱調理後の調理品Ｆの供食等を可能にする。   In the inner and outer fitting portions 21, 31, the inner width of the upper edge of the outer fitting inclined wall 22 is slightly smaller than the outer width of the lower edge of the inner fitting inclined wall 32, and the outer fitting inclination is small. The inner width of the lower edge of the wall 22 is substantially equal to the outer width of the lower edge of the inner fitting inclined wall 32. And the opening part of the container main body 1 is forced by pushing the cover body 11 into the container main body 1 side with the lower edge of the inner fitting inclined wall 32 abutting against the upper edge of the outer fitting inclined wall 22. Can be covered with the lid 11. In this way, the container body 1 is covered with the lid body 11 so that the container body 1 is almost sealed, for example, a sanitary state is ensured at the time of display sale, and the lid body 11 is removed from the container body 1 during cooking. Even if it is forcibly removed, for example, it is possible to fill cooking water, seasoning water, etc. at the time of cooking, and to provide food F after cooking.

また図示にあるように、容器本体１における容器収容部２の上縁部分内側面と、蓋体１１における蓋収容部１２の下縁部分外側面とは、容器本体１に蓋体１１が施蓋されたときに好ましくは密接状にしてしっくりと当接しており、容器本体１内外を一層有効に遮断するようにしている。   As shown in the figure, the inner surface of the upper edge portion of the container body 2 in the container body 1 and the outer surface of the lower edge portion of the lid housing portion 12 in the lid body 11 are covered with the lid body 11. When it is done, it is preferably in close contact with the container body 1 so as to block the inside and outside of the container body 1 more effectively.

また、容器本体１と蓋体１１とを密封状態に嵌合組み合わせて、電子レンジにて加熱調理するとき、調理品Ｆから発生する蒸気等を外部に排出する蒸気排出機構４１を容器フランジ部３、蓋フランジ部１３相互の当接部位に設けてある。この蒸気排出機構４１は、容器本体１内に生じた蒸気圧力が一定以上になると、その過熱蒸気によって容器本体１の容器フランジ部３と蓋体１１の蓋フランジ部１３との接合部分、すなわちその一部を解除し、解除部分における部位の容器フランジ部３あるいは蓋フランジ部１３のいずれかに蒸気抜き孔４２を開穿し、蓋フランジ部１３あるいは容器フランジ部３のいずれかに蒸気抜き孔４２を閉塞する閉塞部４３を形成して成る。図示のように、蒸気排出機構４１は、例えば平面で円形状を呈する容器収容部２あるいは蓋収容部１２外方に位置して、平面でほぼ正方形状を呈する容器フランジ部３、蓋フランジ部１３における四隅部位で、容器本体１あるいは蓋体１１の中心に対して例えば点対称位置に計２個にして配置される。蒸気排出機構４１の配置部位は、もとよりこれに限定されるものではなく、四隅それぞれであっても、四隅位置に限らずに容器収容部２あるいは蓋収容部１２周囲の任意の部位に配置形成することも可能である。   Further, when the container main body 1 and the lid 11 are fitted and combined in a sealed state and cooked in a microwave oven, a steam discharge mechanism 41 that discharges steam generated from the cooked product F to the outside is provided in the container flange portion 3. The lid flange portion 13 is provided at the mutual contact portion. When the steam pressure generated in the container body 1 exceeds a certain level, the steam discharge mechanism 41 is connected to the container flange portion 3 of the container body 1 and the lid flange portion 13 of the lid body 11 by the superheated steam, that is, its A part is released, a steam vent hole 42 is opened in either the container flange part 3 or the lid flange part 13 at the part of the release part, and a steam vent hole 42 is formed in either the lid flange part 13 or the container flange part 3. It is formed by forming a closing portion 43 that closes. As shown in the figure, the steam discharge mechanism 41 is located outside the container housing portion 2 or the lid housing portion 12 that has a circular shape in a plane, for example, and the container flange portion 3 and the lid flange portion 13 that have a substantially square shape in a plane. At the four corners in FIG. 4, for example, a total of two are arranged at point-symmetrical positions with respect to the center of the container body 1 or the lid 11. The arrangement part of the steam discharge mechanism 41 is not limited to this, and even if it is at each of the four corners, it is not limited to the four corner positions but is arranged at any part around the container housing part 2 or the lid housing part 12. It is also possible.

図１乃至図３に示す第１の実施の形態では、容器フランジ部３に開穿した蒸気抜き孔４２と、この蒸気抜き孔４２の孔縁に密着するようにして例えば円形の蒸気抜き孔４２に出没するほぼ錐体栓状例えば円錐体状の閉塞部４３とから成る。例えば蒸気抜き孔４２は容器フランジ部３に、また閉塞部４３は蓋フランジ部１３にそれぞれ設けられるも、図示を省略したが蒸気抜き孔４２を蓋フランジ部１３に、また閉塞部４３を容器フランジ部３にそれぞれ設けることもできる。そして、図３（Ａ）に示すように、蒸気抜き孔４２自体は容器フランジ部３に上方への膨出段部状に突出形成した段部４４に形成され、また閉塞部４３はこの段部４４にしっくりと当接するよう蓋フランジ部１３に膨出段部状に突出形成した覆い段部４５に形成されるものとしてある。あるいは扁平段部状とせずに図３（Ｂ）に示すように、段部４４・覆い段部４５それぞれを所定高さとなる平面で円形状を呈する裁頭錐体状に形成しても良い。   In the first embodiment shown in FIGS. 1 to 3, a steam vent hole 42 opened in the container flange portion 3 and a circular steam vent hole 42 so as to be in close contact with the edge of the steam vent hole 42, for example. It consists of a substantially conical plug-like shape that appears and disappears, for example, a conical blocking portion 43. For example, although the steam vent hole 42 is provided in the container flange portion 3 and the closing portion 43 is provided in the lid flange portion 13, although not shown, the steam vent hole 42 is provided in the lid flange portion 13 and the closing portion 43 is provided in the container flange. It can also be provided in each part 3. As shown in FIG. 3 (A), the steam vent hole 42 itself is formed in a stepped portion 44 that is formed to protrude upward from the container flange portion 3, and the closing portion 43 is formed in this stepped portion. 44 is formed on a cover step portion 45 formed so as to protrude from the lid flange portion 13 like a bulging step portion so as to come into close contact with 44. Alternatively, as shown in FIG. 3B, the stepped portion 44 and the covering stepped portion 45 may each be formed in a truncated cone shape having a circular shape with a plane having a predetermined height, instead of a flat stepped portion.

こうすることで、容器本体１内に生じた蒸気圧力で、容器フランジ部３と蓋フランジ部１３との密接した接合状態が解離すると、解離前では蒸気抜き孔４２を閉塞していた閉塞部４３が蒸気抜き孔４２から抜け出し、蒸気抜き孔４２を開放して蒸気排出路を形成し、蒸気を排出する。蒸気の排出後は、閉塞部４３が蒸気抜き孔４２を再び閉塞し、容器本体１内部の負圧状態を維持する。   In this way, when the intimately joined state between the container flange portion 3 and the lid flange portion 13 is dissociated by the steam pressure generated in the container main body 1, the blocking portion 43 that has blocked the steam vent hole 42 before dissociation. Escapes from the steam vent hole 42, opens the steam vent hole 42, forms a steam discharge path, and discharges the steam. After the steam is discharged, the closing part 43 closes the steam vent hole 42 again to maintain the negative pressure state inside the container body 1.

図４に示す第２の実施の形態では、図１における実施の形態と異なり、閉塞部４３を平坦状に形成したもので、図４（Ａ）に示すように、蒸気抜き孔４２自体は容器フランジ部３に上方への膨出段部状に突出形成した段部４４に形成され、また閉塞部４３はこの段部４４にしっくりと当接するよう蓋フランジ部１３に膨出形成した覆い段部４５に形成されるものとしてある。あるいは扁平段部状とせずに図４（Ｂ）に示すように、段部４４・覆い段部４５それぞれを所定高さとなる平面で円形状を呈する裁頭錐体状に形成しても良く、いずれの場合も、突出形成した段部４４における傾斜周側壁外側面と突出形成した覆い段部４５における傾斜周側壁内側面とが圧着状に密接するものとしてある。   In the second embodiment shown in FIG. 4, unlike the embodiment in FIG. 1, the closed portion 43 is formed in a flat shape. As shown in FIG. 4 (A), the vapor vent hole 42 itself is a container. A cover step portion formed on the flange portion 13 is formed in a step portion 44 formed so as to protrude upward in the form of a bulge step portion on the flange portion 3, and the closing portion 43 bulges on the lid flange portion 13 so as to contact the step portion 44 smoothly. 45 is formed. Alternatively, as shown in FIG. 4B, the stepped portion 44 and the covering stepped portion 45 may each be formed into a truncated cone shape having a circular shape with a plane having a predetermined height, instead of being formed into a flat stepped portion shape. In any case, the inclined peripheral side wall outer surface of the projecting stepped portion 44 and the inclined peripheral side wall inner surface of the projecting formed cover stepped portion 45 are in close contact with each other in a crimping manner.

こうすることで、容器本体１内に生じた蒸気圧力で、容器フランジ部３と蓋フランジ部１３との密接した接合状態が解離すると、解離前では相互の傾斜周側壁が密接していることで閉塞していた段部４４と覆い段部４５とが離反し、蒸気排出路を形成すると同時に蒸気抜き孔４２から閉塞部４３が離反することで蒸気抜き孔４２を開放し、蒸気を排出する。蒸気の排出後は、段部４４・覆い段部４５の傾斜周側壁が再び相互に密接すると同時に閉塞部４３が蒸気抜き孔４２を閉塞し、容器本体１内部の負圧状態を維持する。   By doing so, when the intimate joint state between the container flange portion 3 and the lid flange portion 13 is dissociated by the vapor pressure generated in the container body 1, the inclined peripheral side walls are in close contact before dissociation. The closed stepped portion 44 and the covering stepped portion 45 are separated from each other to form a steam discharge path, and at the same time, the closed portion 43 is separated from the vapor vent hole 42 to open the steam vent hole 42 and discharge steam. After the steam is discharged, the inclined peripheral side walls of the stepped portion 44 and the cover stepped portion 45 are brought into close contact with each other at the same time, and at the same time, the closing portion 43 closes the steam vent hole 42 to maintain the negative pressure state inside the container body 1.

図５に示す第３の実施の形態では、蒸気抜き孔４２を蓋フランジ部１３に、閉塞部４３を容器フランジ部３にそれぞれ設けたもので、図に示すように、閉塞部４３自体は容器フランジ部３に平面で円形状を呈する上方への膨出段部状に突出形成した段部４４に形成され、また蒸気抜き孔４２はこの段部４４にしっくりと当接するよう蓋フランジ部１３に膨出状に突出形成した覆い段部４５に形成されるものとしてある。この場合、図示のように段部４４・覆い段部４５それぞれを所定高さとなる裁頭錐体状に形成しても良い。   In the third embodiment shown in FIG. 5, the steam vent hole 42 is provided in the lid flange portion 13 and the closing portion 43 is provided in the container flange portion 3, respectively. As shown in the figure, the closing portion 43 itself is a container. The flange portion 3 is formed in a stepped portion 44 which is formed in a flat and circular shape projecting upward and has a flat shape, and the steam vent hole 42 is formed in the lid flange portion 13 so as to come into close contact with the stepped portion 44. It is assumed that it is formed on a cover step 45 that protrudes in a bulging shape. In this case, as shown in the figure, each of the stepped portion 44 and the covering stepped portion 45 may be formed in a truncated cone shape having a predetermined height.

こうすることで、容器本体１内に生じた蒸気圧力で、容器フランジ部３と蓋フランジ部１３との相互に密接した接合状態が解離すると、解離前では相互の傾斜周側壁が密接していることで閉塞していた段部４４と覆い段部４５とが離反し、蒸気排出路を形成すると同時に蒸気抜き孔４２が閉塞部４３から離反することで蒸気抜き孔４２が開放され、蒸気を排出する。蒸気の排出後は、段部４４・覆い段部４５の傾斜周側壁が再び相互に密接すると同時に蒸気抜き孔４２が閉塞部４３によって閉塞され、容器本体１内部の負圧状態を維持する。   By doing so, when the joint state between the container flange portion 3 and the lid flange portion 13 is dissociated by the vapor pressure generated in the container body 1, the inclined peripheral side walls are in close contact before dissociation. As a result, the stepped portion 44 and the covering stepped portion 45 are separated from each other to form a steam discharge passage, and at the same time, the steam vent hole 42 is separated from the closed portion 43 so that the steam vent hole 42 is opened and the steam is discharged. To do. After the steam is discharged, the inclined peripheral side walls of the stepped portion 44 and the cover stepped portion 45 are brought into close contact with each other at the same time, and at the same time, the steam vent hole 42 is closed by the closing portion 43 to maintain the negative pressure state inside the container body 1.

図６に示す第４の実施の形態では、図に示すように、閉塞部４３自体は容器フランジ部３に下方への窪み状に形成した窪み段部４６に形成され、また蒸気抜き孔４２はこの窪み段部４６にしっくりと当接するよう蓋フランジ部１３に窪ませた窪み部４７に形成されるものとしてある。もとより、図示を省略したが、窪み段部４６・窪み部４７それぞれを所定深さとなる逆裁頭錐体状に形成しても良く、いずれの場合も、窪ませて形成した窪み段部４６における傾斜周側壁と窪み部４７における傾斜周側壁とが圧着状に密接するものとしてある。   In the fourth embodiment shown in FIG. 6, as shown in the figure, the closing portion 43 itself is formed in a recess step portion 46 formed in a downward recess shape in the container flange portion 3, and the steam vent hole 42 is formed as follows. The recess 47 is formed in a recess 47 that is recessed in the lid flange 13 so as to come into close contact with the recess 46. Although not shown in the drawings, each of the recess step portion 46 and the recess portion 47 may be formed in a reverse truncated cone shape having a predetermined depth, and in either case, the recess step portion 46 is formed by being recessed. The inclined peripheral side wall and the inclined peripheral side wall in the recess 47 are in close contact with each other in a crimping manner.

こうすることで、容器本体１内に生じた蒸気圧力で、容器フランジ部３と蓋フランジ部１３との相互に密接した接合状態が解離すると、解離前では相互の周側面が密接していることで閉塞していた窪み段部４６と窪み部４７とが離反し、蒸気排出路を形成すると同時に蒸気抜き孔４２が閉塞部４３から離反することで蒸気抜き孔４２が開放され、蒸気を排出する。蒸気の排出後は、窪み段部４６、窪み部４７の傾斜周側壁が再び相互に密接すると同時に蒸気抜き孔４２が閉塞部４３によって閉塞され、容器本体１内部の負圧状態を維持する。   By doing so, when the intimately joined state of the container flange portion 3 and the lid flange portion 13 is dissociated by the vapor pressure generated in the container main body 1, the peripheral side surfaces are in close contact before dissociation. The hollow step portion 46 and the hollow portion 47 that were closed in the step are separated from each other to form a vapor discharge path, and at the same time, the vapor vent hole 42 is separated from the closed portion 43 so that the vapor vent hole 42 is opened and the steam is discharged. . After the steam is discharged, the inclined peripheral side walls of the recess step 46 and the recess 47 are brought into close contact with each other at the same time, and the steam vent hole 42 is closed by the closing portion 43 to maintain the negative pressure state inside the container body 1.

また、図７に示すように段部４４と覆い段部４５とのそれぞれの頂壁相互間は、相互に当接したり（図７（Ａ）参照）、所定の間隙を設定して空隙部分を形成したり（図７（Ｂ）参照）することができる。特に当接状態とする場合には、蒸気抜き孔４２は孔状に開穿形成され、閉塞部４３は蒸気抜き孔４２を確実に密閉できるように、特に蒸気抜き孔４２の周縁部分では閉塞部４３との密着性が得られるように考慮する。また、これは同様に図示を省略した窪み段部４６と窪み部４７とのそれぞれの頂壁相互間において、当接させたり、空隙部分を形成したりすることができる。   Further, as shown in FIG. 7, the top walls of the stepped portion 44 and the cover stepped portion 45 are in contact with each other (see FIG. 7 (A)), or a predetermined gap is set to form a gap portion. Or can be formed (see FIG. 7B). In particular, in the case of a contact state, the steam vent hole 42 is formed in a hole shape, and the blocking portion 43 is a closed portion particularly at the peripheral portion of the steam vent hole 42 so that the steam vent hole 42 can be reliably sealed. Consideration is made so as to obtain adhesion to the substrate 43. Further, this can similarly make contact between the top walls of the recess step portion 46 and the recess portion 47 (not shown) or form a gap portion.

図８に示す第５の実施の形態では、蒸気抜き孔４２を、揺動式の開閉弁４２Ａによって開閉される弁構造のものとして配置形成し、閉塞部４３を容器フランジ部３に設けたものである。図に示すように、閉塞部４３自体は容器フランジ部３に上方への膨出段部状に突出形成した段部４４に形成され、また蒸気抜き孔４２はこの段部４４にしっくりと当接するよう蓋フランジ部１３に膨出状に突出形成した覆い段部４５に形成されるものとしてある。そして、蒸気抜き孔４２自体は、覆い段部４５部位に例えばＵ字形、Ω字形等に切り込まれた切断線によって形成された開閉弁４２Ａが半ば起立することで開放されるものとなっている。   In the fifth embodiment shown in FIG. 8, the steam vent hole 42 is arranged and formed as a valve structure that is opened and closed by a swinging on-off valve 42A, and the closing portion 43 is provided in the container flange portion 3. It is. As shown in the figure, the closing portion 43 itself is formed in a stepped portion 44 that is formed to protrude upward from the container flange portion 3, and the steam vent hole 42 abuts on the stepped portion 44. The cover flange portion 13 is formed on the cover step portion 45 that protrudes in a bulging manner. The steam vent 42 itself is opened when the opening / closing valve 42A formed by a cutting line cut into, for example, a U-shape or a Ω-shape at the cover step portion 45 is raised halfway. .

こうすることで、容器本体１内に生じた蒸気圧力で、容器フランジ部３と蓋フランジ部１３との密接した接合状態が解離すると、解離前では相互の傾斜周側壁が密接していることで閉塞していた段部４４と覆い段部４５とが離反し、蒸気排出路を形成すると同時に閉塞部４３から離反し、また蒸気圧力で開閉弁４２Ａが半ば起立して蒸気抜き孔４２を開放して蒸気を排出する。蒸気の排出後は、段部４４・覆い段部４５の傾斜周側壁が再び相互に密接すると同時に蒸気抜き孔４２が閉塞部４３によって閉塞され、容器本体１内部の負圧状態を維持する。また、蒸気圧力の発生前では開閉弁４２Ａが蒸気抜き孔４２自体を閉塞しているから、安全、衛生的であり、蒸気の噴出方向を制御可能にもする。   By doing so, when the intimate joint state between the container flange portion 3 and the lid flange portion 13 is dissociated by the vapor pressure generated in the container body 1, the inclined peripheral side walls are in close contact before dissociation. The closed step portion 44 and the covering step portion 45 are separated from each other to form a steam discharge path, and at the same time are separated from the closed portion 43, and the on-off valve 42A is erected halfway by the steam pressure to open the steam vent hole 42. Exhaust the steam. After the steam is discharged, the inclined peripheral side walls of the stepped portion 44 and the cover stepped portion 45 are brought into close contact with each other at the same time, and at the same time, the steam vent hole 42 is closed by the closing portion 43 to maintain the negative pressure state inside the container body 1. In addition, since the on-off valve 42A closes the steam vent hole 42 itself before the generation of the steam pressure, it is safe and hygienic, and the steam ejection direction can be controlled.

図９に示す第６の実施の形態では、閉塞部４３が形成される容器フランジ部３の段部４４と、この段部４４を覆うように膨出段部状で、蒸気抜き孔４２が開穿形成される覆い段部４５とにおけるそれぞれの基部周囲に、互いに強制的に嵌り合い、また容器本体１内で生じた蒸気圧力で嵌合状態が解除される溝状あるいは突条状の容器シール部５１、蓋シール部５２を設けたものである。図示にあって、容器シール部５１、蓋シール部５２それぞれは、段部４４・覆い段部４５の内方に窪む溝状にして周囲全域に形成されるも、図示を省略したが、外方に突条状にして更には周縁の一部で形成されることもある。   In the sixth embodiment shown in FIG. 9, the step 44 of the container flange portion 3 in which the closing portion 43 is formed, and a bulge step shape so as to cover the step portion 44, and the steam vent hole 42 is opened. Groove-shaped or ridge-shaped container seals that are forcibly fitted to each other around the bases of the cover step 45 to be formed and are released from the fitted state by the steam pressure generated in the container body 1 A part 51 and a lid seal part 52 are provided. In the illustration, each of the container seal portion 51 and the lid seal portion 52 is formed in a groove shape recessed inwardly of the stepped portion 44 and the cover stepped portion 45. It may be formed in a ridge shape toward the side and further formed at a part of the periphery.

尚、この第６の実施の形態においても、段部４４と覆い段部４５とのそれぞれの頂壁相互間は、相互に当接したり（図９（Ａ）参照）、所定の間隙を設定して空隙部分を形成したり（図９（Ｂ）参照）することができるのは、勿論である。   In the sixth embodiment as well, the top walls of the stepped portion 44 and the cover stepped portion 45 are in contact with each other (see FIG. 9A), or a predetermined gap is set. Of course, it is possible to form voids (see FIG. 9B).

こうすることで、容器本体１内に生じた蒸気圧力で、容器フランジ部３と蓋フランジ部１３との密接した接合状態が解離すると、解離前のそれまでは相互に嵌り合っていた容器シール部５１、蓋シール部５２相互の一部でもその嵌合状態が解除したものとなり、蒸気抜き孔４２を開放して蒸気を排出する。蒸気の排出後は、容器シール部５１、蓋シール部５２相互が再び嵌合して蒸気抜き孔４２を含む蒸気排出路が閉塞され、容器本体１内部の負圧状態を維持する。   In this way, when the tightly joined state between the container flange portion 3 and the lid flange portion 13 is dissociated by the vapor pressure generated in the container main body 1, the container seal portion that has been fitted to each other before the dissociation. 51 and part of the lid seal part 52 are also released from the fitted state, and the steam vent hole 42 is opened to discharge the steam. After the steam is discharged, the container seal portion 51 and the lid seal portion 52 are fitted again to close the steam discharge path including the steam vent hole 42, and the negative pressure state inside the container body 1 is maintained.

更には、図８に示すように、容器収容部２の開口部の口縁と蓋収容部１２の開口部の口縁とは第２内外側嵌合部２５，３５によって、しっくりと密接されることで、内外部の密封性を一層向上させることができる。すなわち、図示のように容器収容部２の開口部縁には、開口部縁に段部状に窪ませた第２外側嵌合部２５を形成し、蓋収容部１２の開口部縁には、段部状の第２外側嵌合部２５内に強制的に嵌まり込む断面で溝状に下方に突出している第２内側嵌合部３５を形成したものである。そして、第２外側嵌合部２５の内法幅員は第２内側嵌合部３５の外法幅員に比しほぼ等しいか、やや小さくしてある。   Further, as shown in FIG. 8, the mouth edge of the opening of the container housing portion 2 and the mouth edge of the opening of the lid housing portion 12 are brought into close contact with each other by the second inner and outer fitting portions 25 and 35. Thereby, the internal and external sealing performance can be further improved. That is, as shown in the figure, the opening edge of the container housing portion 2 is formed with a second outer fitting portion 25 that is recessed in a step shape at the opening edge, and the opening edge of the lid housing portion 12 is A second inner fitting portion 35 that protrudes downward in the shape of a groove is formed with a cross-section that is forcibly fitted into the stepped second outer fitting portion 25. The inner width of the second outer fitting portion 25 is substantially equal to or slightly smaller than the outer width of the second inner fitting portion 35.

こうすることで、蓋体１１における第２内側嵌合部３５を容器本体１における第２外側嵌合部２５に位置合わせし、前記の内外側嵌合部２１，３１による嵌め合いと共に嵌め合わせることで、容器本体１と蓋体１１とは内外で二重に密封され、容器本体１内に収容した調理品Ｆから生じ得る液状物の外部への漏洩等を一層有効に防止できる。   By doing so, the second inner fitting portion 35 in the lid body 11 is aligned with the second outer fitting portion 25 in the container body 1 and is fitted together with the fitting by the inner and outer fitting portions 21 and 31. Thus, the container body 1 and the lid body 11 are double-sealed inside and outside, and leakage of the liquid material that may occur from the cooked product F accommodated in the container body 1 can be more effectively prevented.

一方、図１０乃至図１２には容器本体１、蓋体１１の別の形態が示されている。この形態においては、平面からみて基本的にはほぼ正方形状を呈する容器本体１にあって、中央に平面で基本的には円形状を呈する窪み状の容器収容部２を形成し、その周囲に容器フランジ部３を形成してある。また、同様に平面からみて基本的にはほぼ正方形状を呈する蓋体１１にあって、中央に平面で容器収容部２の開口形状と対応した基本的には円形状を呈するドーム状の蓋収容部１２を形成し、その周囲に蓋フランジ部１３を形成してある。容器本体１と蓋体１１とをほぼ密封状態に嵌め合わせる内外側嵌合部２１，３１は、平面で点対称配置の一対の角部と一対の円弧部とを有するいわばレモン形状の枠状を呈する。そして、容器フランジ部３、蓋フランジ部１３において、一方の対角線上にある両隅部では斜状に切り欠かれて摘み部６，１６が突出形成されており、また他方の対角線上にある両隅部に蒸気排出機構４１が配置形成されている。尚、上記のそれぞれの実施の形態を示した各図における同一部分については同一の符号を付すことでその詳細は省略する。   On the other hand, FIGS. 10 to 12 show other forms of the container body 1 and the lid body 11. In this embodiment, the container body 1 basically has a square shape when viewed from the plane, and a hollow container housing portion 2 having a flat shape and basically a circular shape is formed at the center, and the periphery thereof is formed around the periphery. A container flange portion 3 is formed. Similarly, the lid body 11 basically has a square shape when viewed from the plane, and is basically a dome-shaped lid housing having a flat shape in the center and corresponding to the opening shape of the container housing portion 2. A portion 12 is formed, and a lid flange portion 13 is formed around the portion 12. The inner and outer fitting portions 21 and 31 for fitting the container body 1 and the lid body 11 in a substantially sealed state have a so-called lemon-shaped frame shape having a pair of corner portions and a pair of arc portions arranged in a plane symmetry. Present. In the container flange portion 3 and the lid flange portion 13, both corners on one diagonal are notched obliquely to form knobs 6 and 16, and both on the other diagonal. A steam discharge mechanism 41 is arranged and formed at the corner. In addition, the same code | symbol is attached | subjected about the same part in each figure which showed each said embodiment, and the detail is abbreviate | omitted.

この形態においての容器収容部２、蓋収容部１２の開口形状は、その平面で基本的には円形状であるも、前記の摘み部６，１６部位では湾曲状にし、蒸気排出機構４１の配置部位では矩形隅状に突出させると共にほぼ半円形状で抉られている窪み状にしてある。   Although the opening shape of the container accommodating part 2 and the lid accommodating part 12 in this form is basically circular in its plane, it is curved at the knobs 6 and 16 and the steam discharge mechanism 41 is arranged. The part is formed in a hollow shape that protrudes into a rectangular corner and is almost semicircular.

尚、図中符号７は容器本体１における容器収容部２と容器フランジ部３との間に段部状に形成された仮収容段部であり、容器収容部２内に収容された調理品Ｆが加熱調理されたときの噴き上がる調味水（出汁）等を一時的にでも収容し、容器本体１外への噴出等を一層有効に防止する。   In the figure, reference numeral 7 denotes a temporary storage step portion formed in a step shape between the container storage portion 2 and the container flange portion 3 in the container main body 1, and the cooked product F stored in the container storage portion 2. Contained seasoning water (soup), etc., which is spouted when cooked, is temporarily stored, and more effectively prevents the outside of the container body 1 from being ejected.

図１３乃至図１６図においては第７の実施の形態が示されている。この第７の実施の形態では、蒸気排出機構４１においての段部４４・覆い段部４５における傾斜周側壁に溝状の蒸気案内部４８を形成したのであり、この蒸気案内部４８は、図示のように段部４４・覆い段部４５の基端部位から頂壁部位に至るまでの上下方向に沿って例えば１本の直線状に連続して形成してされる。   A seventh embodiment is shown in FIGS. 13 to 16. In the seventh embodiment, the groove-shaped steam guide portion 48 is formed on the inclined peripheral side wall of the step portion 44 and the cover step portion 45 in the steam discharge mechanism 41. In this way, for example, a single straight line is continuously formed along the vertical direction from the base end portion to the top wall portion of the stepped portion 44 and the cover stepped portion 45.

図示にあっての蒸気案内部４８は、蓋体１１に形成されている覆い段部４５の傾斜周側壁に上下方向に沿って覆い段部４５の外方向に突出させることによって内側では溝状となることで形成されており、容器本体１内が発生する蒸気によって過圧状態になったとき、その蒸気が蒸気案内部４８を経て頂壁における蒸気抜き孔４２に至るようになっている。この蒸気案内部４８自体は、覆い段部４５に形成することなく、容器本体１における段部４４の傾斜周側壁に、段部４４の内方向に突出させることによって外側では溝状となることで形成することもできる。   The steam guide portion 48 shown in the figure has a groove shape on the inside by projecting outwardly of the cover step portion 45 along the vertical direction on the inclined peripheral side wall of the cover step portion 45 formed in the lid body 11. Thus, when an overpressure state is generated by the steam generated in the container body 1, the steam passes through the steam guide portion 48 and reaches the steam vent hole 42 in the top wall. The steam guide portion 48 itself is not formed in the cover step portion 45, but is formed into a groove shape on the outside by projecting inward of the step portion 44 on the inclined peripheral side wall of the step portion 44 in the container body 1. It can also be formed.

尚、この蒸気案内部４８は、図６に示す第４の実施の形態における窪み段部４６・窪み部４７における傾斜周側壁に、同様にして溝状の蒸気案内部４８を形成することもでき（図示せず）、窪み段部４６ではこれの外方向に、窪み部４７ではこれの内方向にそれぞれ突出させることで形成される。   In the steam guide 48, a groove-like steam guide 48 can be formed on the inclined peripheral side walls of the recess step 46 and the recess 47 in the fourth embodiment shown in FIG. (Not shown), it is formed by projecting outward in the recess step 46 and inward in the recess 47.

いずれにしても、段部４４・覆い段部４５相互間で、あるいは窪み段部４６・窪み部４７相互間で密着している傾斜周側壁間に、その基端部位から頂壁部位に至る蒸気の通路が恒常的に確保されていればよく、基端部位あるいは頂壁部位の少なくともいずれかでは、容器本体１内で発生する蒸気が所定圧力に到達するまでは密封性を保持するようになっている。   In any case, the steam from the base end part to the top wall part between the stepped part 44 and the cover stepped part 45 or between the inclined peripheral side walls closely adhered between the recessed stepped part 46 and the recessed part 47. It is sufficient that the passage is constantly secured, and at least one of the base end part and the top wall part maintains the sealing property until the vapor generated in the container body 1 reaches a predetermined pressure. ing.

次にこれの使用の一例を説明すると、例えば丼物その他の蒸すことで供食できる調理品Ｆの素材を、所定の調味料によって味付けされているパック詰めされた調味水と共に封入して販売等されるものとし、容器本体１内にそれらの半ば調理された素材、その他のパック品を収容し、蓋体１１を内外側嵌合部２１，３１によって嵌め合わせることで密封しておく。調理に際し、開放した容器本体１内の素材に所定の調味水等を加え、再度密封し、電子レンジ内において所定時間で加熱調理する。電子レンジによる加熱に際し、容器本体１内に収容されている調味水等の水分は蒸気となって素材を蒸らして調理し、容器本体１内では所定の蒸気圧力が生じる。すると、内外側嵌合部２１，３１による嵌合力に比し弱くなっている接合力で嵌め合っている蒸気排出機構４１では、その接合力が解離して蒸気抜き孔４２を開放して蒸気排出路を形成する。開放された蒸気抜き孔４２は過熱蒸気を排出し、容器本体１内の蒸気圧力を一定に保持して調理を続行させる。所定の加熱時間の経過後では、電子レンジから取り出し、充分に蒸らした後に蓋体１１を容器本体１から取り外し、供食する。尚、所定量の過熱蒸気の排出後では、容器本体１内は負圧状態になっていることで、調味水等は調理品Ｆの素材内に一層浸透し、調理を一層促進させ、美味なものとさせる。   Next, an example of the use of this will be described. For example, the ingredients of the cooked food F that can be eaten by steaming, etc. are encapsulated together with packed seasoned water seasoned with a predetermined seasoning and sold. It is assumed that the half-cooked material and other packed products are accommodated in the container main body 1 and sealed by fitting the lid 11 with the inner and outer fitting portions 21 and 31. In cooking, a predetermined seasoning water or the like is added to the material in the opened container main body 1, sealed again, and cooked in a microwave oven for a predetermined time. During heating by the microwave oven, moisture such as seasoning water stored in the container body 1 is steamed to cook the material, and a predetermined steam pressure is generated in the container body 1. Then, in the steam discharge mechanism 41 fitted with the joining force that is weaker than the fitting force by the inner and outer fitting parts 21 and 31, the joining force is dissociated and the steam vent hole 42 is opened to discharge the steam. Form a road. The opened steam vent hole 42 discharges the superheated steam and keeps the steam pressure in the container body 1 constant to continue cooking. After the elapse of a predetermined heating time, the lid 11 is removed from the container body 1 after being taken out from the microwave oven and sufficiently steamed, and then served. In addition, after discharge | emissioning a predetermined amount of superheated steam, since the container main body 1 is in a negative pressure state, seasoning water etc. penetrate | infiltrate further into the raw material of the cooked product F, further promotes cooking, and is delicious. Let it be.

本発明を実施するための最良の形態における一部切欠分解斜視図である。It is a partially cutaway exploded perspective view in the best mode for carrying out the present invention. 同じくその一部切欠平面図である。It is the partially notched top view similarly. 同じく第１の実施の形態における要部断面図で、その（Ａ）は高さが低い段部形態である場合、その（Ｂ）は高さが高い段部形態である場合である。Similarly, it is a principal part sectional view in a 1st embodiment, and (A) is a case where it is a step part form with low height, and (B) is a case where it is a step part form with high height. 同じく第２の実施の形態における要部断面図で、その（Ａ）は高さが低い段部形態である場合、その（Ｂ）は高さが高い段部形態である場合である。Similarly, it is a principal part sectional view in a 2nd embodiment, and (A) is a case where it is a step part form with low height, and (B) is a case where it is a step part form with high height. 同じく第３の実施の形態における要部断面図である。Similarly it is principal part sectional drawing in 3rd Embodiment. 同じく第４の実施の形態における要部断面図である。Similarly it is principal part sectional drawing in 4th Embodiment. 同じく段部及び覆い段部との嵌り合いを示す要部断面図で、その（Ａ）は頂壁相互が当接状態の場合、その（Ｂ）は頂壁相互間に間隙が設けられた場合である。It is principal part sectional drawing which similarly shows the fitting with a step part and a cover step part, The (A) is in a contact state between top walls, The (B) is a case where a clearance gap is provided between top walls It is. 同じく第５の実施の形態における要部断面図である。Similarly it is principal part sectional drawing in 5th Embodiment. 同じく第６の実施の形態における要部断面図で、その（Ａ）は頂壁相互が当接状態の場合、その（Ｂ）は頂壁相互間に間隙が設けられた場合である。Similarly, in the sectional view of the main part in the sixth embodiment, (A) shows the case where the top walls are in contact with each other, and (B) shows the case where a gap is provided between the top walls. 同じく別の外観形態における分解斜視図である。It is an exploded perspective view in another appearance form similarly. 同じくその一部切欠平面図である。It is the partially notched top view similarly. 同じくその要部断面図である。It is the principal part sectional drawing similarly. 同じく第７の実施の形態における分解斜視図である。Similarly it is a disassembled perspective view in 7th Embodiment. 同じくその一部切欠平面図である。It is the partially notched top view similarly. 同じくその要部断面図である。It is the principal part sectional drawing similarly. 同じくその要部横断面図である。It is the principal part cross-sectional view similarly.

符号の説明Explanation of symbols

Ｆ…調理品
１…容器本体 ２…容器収容部
３…容器フランジ部 ４…容器補強溝
５…スタック ６…摘み部
７…仮収容段部
１１…蓋体 １２…蓋収容部
１３…蓋フランジ部 １４…蓋補強溝
１６…摘み部
２１…外側嵌合部 ２２…外嵌合傾斜壁
２３…容器口端縁 ２４…容器縁部
２５…第２外側嵌合部
３１…内側嵌合部 ３２…内嵌合傾斜壁
３３…蓋口端縁 ３５…第２内側嵌合部
４１…蒸気排出機構 ４２…蒸気抜き孔
４２Ａ…開閉弁 ４３…閉塞部
４４…段部 ４５…覆い段部
４６…窪み段部 ４７…窪み部
４８…蒸気案内部
５１…容器シール部 ５２…蓋シール部 F ... Cooked product 1 ... Container body 2 ... Container receiving part 3 ... Container flange part 4 ... Container reinforcing groove 5 ... Stack 6 ... Picking part 7 ... Temporary storage step part 11 ... Cover body 12 ... Lid container part 13 ... Lid flange part DESCRIPTION OF SYMBOLS 14 ... Lid reinforcement groove | channel 16 ... Knob part 21 ... Outer fitting part 22 ... Outer fitting inclination wall 23 ... Container opening edge 24 ... Container edge part 25 ... 2nd outer fitting part 31 ... Inner fitting part 32 ... Inside Fitting inclined wall 33 ... lid opening edge 35 ... second inner fitting part 41 ... steam discharge mechanism 42 ... steam vent hole 42A ... on-off valve 43 ... closing part 44 ... step part 45 ... cover step part 46 ... depression step part 47 ... Depression 48 ... Steam guide 51 ... Container seal 52 ... Lid seal

Claims (13)

調理品を収容する容器本体と、この容器本体の開口部を施蓋する蓋体とを、容器本体の周縁部に形成した容器フランジ部に設けた外側嵌合部内に蓋体の周縁部に形成した蓋フランジ部に設けた内側嵌合部を強制的に嵌め入れることで容器本体を密封する内嵌合式の包装容器であって、相互に接合する容器フランジ部、蓋フランジ部の内外側嵌合部の内方に蒸気排出機構を設けて成り、この蒸気排出機構は、容器フランジ部、蓋フランジ部を容器本体の上方あるいは下方に膨出させて、互いに当接している傾斜周側壁が容器本体内で生じた蒸気圧力で解離する段部・覆い段部、あるいは窪み段部・窪み部を形成すると共に、段部、覆い段部、窪み段部、窪み部のいずれかに蒸気抜き孔を開穿したことを特徴とする電子レンジ用食品包装容器。   A container main body for storing the cooked product and a lid for covering the opening of the container main body are formed on the outer periphery of the lid in the outer fitting portion provided on the container flange formed on the peripheral edge of the container main body. It is an inner fitting type packaging container that seals the container body by forcibly fitting the inner fitting part provided on the lid flange part, and the inner and outer fittings of the container flange part and the lid flange part to be joined to each other A steam discharge mechanism is provided on the inner side of the container, and the steam discharge mechanism has a container flange portion and a lid flange portion that bulge upward or downward of the container body, and the inclined peripheral side walls that are in contact with each other have a container body A step / cover step that is dissociated by the steam pressure generated inside, or a step / depression step is formed, and a steam vent is opened in any of the step, cover step, recess step, or recess. A food packaging container for microwave ovens characterized by being pierced. 段部・覆い段部、あるいは窪み段部・窪み部は円錐台形状に形成し、それぞれの傾斜周側壁あるいは頂壁は相互に密接し、嵌り込ませてある請求項１に記載の電子レンジ用食品包装容器。   2. The microwave oven according to claim 1, wherein the stepped portion, the covered stepped portion, or the recessed stepped portion / recessed portion are formed in a truncated cone shape, and the inclined peripheral side walls or the top walls are in close contact with each other. Food packaging container. 蒸気抜き孔は孔状に開口形成してある請求項１または２に記載の電子レンジ用食品包装容器。   The food packaging container for a microwave oven according to claim 1 or 2, wherein the steam vent is formed in a hole shape. 蒸気抜き孔は切り込みによる開閉弁を備えて形成してある請求項１または２に記載の電子レンジ用食品包装容器。   The food packaging container for a microwave oven according to claim 1 or 2, wherein the steam vent hole is formed with an opening / closing valve by cutting. 蒸気抜き孔には、この蒸気抜き孔を開口形成した段部・覆い段部、あるいは窪み段部・窪み部に当接する覆い段部・段部、あるいは窪み部・窪み段部に、蒸気抜き孔を閉塞する閉塞部を形成してある請求項１乃至４のいずれかに記載の電子レンジ用食品包装容器。   In the steam vent hole, a steam vent hole is formed in the step portion / cover step portion formed with the steam vent hole, or the cover step portion / step portion contacting the recess step portion / recess portion, or the recess portion / recess step portion. The food packaging container for microwave ovens in any one of Claims 1 thru | or 4 which has formed the obstruction | occlusion part which obstruct | occludes. 蒸気抜き孔は開口形成の孔状とし、閉塞部は蒸気抜き孔内に嵌り込み、蒸気抜き孔の孔縁に密着する錐体栓状に形成してある請求項５に記載の電子レンジ用食品包装容器。   The food for a microwave oven according to claim 5, wherein the steam vent hole is formed in an opening shape, and the closed portion is formed in a conical plug shape that fits into the steam vent hole and adheres closely to the edge of the steam vent hole. Packaging container. 蓋体は、ドーム状の蓋収容部を膨出形成してある請求項１乃至６のいずれかに記載の電子レンジ用食品包装容器。   The food packaging container for a microwave oven according to any one of claims 1 to 6, wherein the lid is formed by bulging a dome-shaped lid housing portion. 段部・覆い段部相互間で当接する傾斜周側壁、頂壁あるいは窪み段部・窪み部相互間で当接する傾斜周側壁、頂壁それぞれは、容器本体内で生じる蒸気圧力の一定圧力以上で解離されるように構成してある請求項１乃至７のいずれかに記載の電子レンジ用食品包装容器。   Inclined peripheral side walls and top walls that contact each other between the stepped part and the covering step part, or inclined peripheral side walls that contact each other between the stepped part and the recessed part, and the top wall are above a certain pressure of the vapor pressure generated in the container body. The food packaging container for a microwave oven according to any one of claims 1 to 7, wherein the food packaging container is configured to be dissociated. 蒸気排出機構における段部・覆い段部、あるいは窪み段部・窪み部それぞれの基部周囲に、互いに強制的に嵌り合い、また容器本体内で生じた蒸気圧力で嵌合状態が解除される溝状あるいは突条状の容器シール部、蓋シール部を設けてある請求項１乃至８のいずれかに記載の電子レンジ用食品包装容器。   Groove shape that fits together around the base of each step / cover step or depression step / depression in the steam discharge mechanism and is released by the steam pressure generated in the container body Or the food packaging container for microwave ovens in any one of the Claims 1 thru | or 8 which are provided with the protrusion-shaped container seal part and the lid seal part. 蒸気排出機構は、容器本体の中心に対して点対称にして配置形成してある請求項１乃至９のいずれかに記載の電子レンジ用食品包装容器。   The food packaging container for a microwave oven according to any one of claims 1 to 9, wherein the steam discharge mechanism is arranged and formed point-symmetrically with respect to the center of the container body. 容器本体における容器収容部の開口部には、開口部縁に段部状に窪ませた第２外側嵌合部を形成し、蓋体における蓋収容部の開口部には、段部状の第２外側嵌合部内に強制的に嵌まり込む断面で溝状に下方に突出している第２内側嵌合部を形成してある請求項１乃至１０のいずれかに記載の電子レンジ用食品包装容器。   The opening of the container housing part in the container body is formed with a second outer fitting part that is recessed in a stepped shape at the edge of the opening, and the opening of the lid housing part in the lid is provided with a stepped The food packaging container for a microwave oven according to any one of claims 1 to 10, wherein a second inner fitting portion that protrudes downward in a groove shape in a cross-section forcibly fitting into the outer fitting portion is formed. . 段部・覆い段部、あるいは窪み段部・窪み部における傾斜周側壁に溝状の蒸気案内部を形成してある請求項１乃至１１のいずれかに記載の電子レンジ用食品包装容器。   The food packaging container for a microwave oven according to any one of claims 1 to 11, wherein a groove-shaped steam guide portion is formed on a stepped portion / covered stepped portion or an inclined peripheral side wall of the recessed stepped portion / recessed portion. 蒸気案内部は、段部・覆い段部、あるいは窪み段部・窪み部の基端部位から頂壁部位に至るまで連続している請求項１２に記載の電子レンジ用食品包装容器。   The food packaging container for a microwave oven according to claim 12, wherein the steam guide portion is continuous from the base end portion to the top wall portion of the stepped portion / covered stepped portion or the recessed stepped portion / recessed portion.
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JP4468479B1 (en) * 2009-07-21 2010-05-26 Ｎｅｗｓ Ｃｈｅｆ株式会社 Microwave cooking container
JP2011037470A (en) * 2009-08-10 2011-02-24 Fp Corp Packaging container
JP2011157110A (en) * 2010-02-01 2011-08-18 Fpco Chupa Kk Food product container and steam convection system utilizing the same
JP3176482U (en) * 2012-04-12 2012-06-21 エフピコチュ−パ株式会社 Food container for lunch
JP2015151150A (en) * 2014-02-13 2015-08-24 リスパック株式会社 Lid body for fitting container
CN106419637A (en) * 2015-08-10 2017-02-22 广东顺德昌盛实业有限公司 Improved food processer
JP2017214106A (en) * 2016-05-31 2017-12-07 大和製罐株式会社 Container for microwave oven
US10974888B2 (en) 2015-12-21 2021-04-13 Dai Nippon Printing Co., Ltd. Lidded container and container used therefor

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JPH10316177A (en) * 1997-05-19 1998-12-02 Chugoku Pearl Hanbai Kk Food container for microwave oven
JP2003221078A (en) * 2001-11-20 2003-08-05 Tachibana Yoki Kk Packaging member and packaging container
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Publication number Priority date Publication date Assignee Title
JP4468479B1 (en) * 2009-07-21 2010-05-26 Ｎｅｗｓ Ｃｈｅｆ株式会社 Microwave cooking container
JP2011027276A (en) * 2009-07-21 2011-02-10 Ｎｅｗｓ Ｃｈｅｆ株式会社 Container for microwave cooking
JP2011037470A (en) * 2009-08-10 2011-02-24 Fp Corp Packaging container
JP2011157110A (en) * 2010-02-01 2011-08-18 Fpco Chupa Kk Food product container and steam convection system utilizing the same
JP3176482U (en) * 2012-04-12 2012-06-21 エフピコチュ−パ株式会社 Food container for lunch
JP2015151150A (en) * 2014-02-13 2015-08-24 リスパック株式会社 Lid body for fitting container
CN106419637A (en) * 2015-08-10 2017-02-22 广东顺德昌盛实业有限公司 Improved food processer
CN106419637B (en) * 2015-08-10 2018-12-18 广东顺德昌盛实业有限公司 A kind of improved food cooking machine
US10974888B2 (en) 2015-12-21 2021-04-13 Dai Nippon Printing Co., Ltd. Lidded container and container used therefor
JP2017214106A (en) * 2016-05-31 2017-12-07 大和製罐株式会社 Container for microwave oven

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