JP3253550B2 - Microwave cooked food packaging - Google Patents
Microwave cooked food packagingInfo
- Publication number
- JP3253550B2 JP3253550B2 JP03889197A JP3889197A JP3253550B2 JP 3253550 B2 JP3253550 B2 JP 3253550B2 JP 03889197 A JP03889197 A JP 03889197A JP 3889197 A JP3889197 A JP 3889197A JP 3253550 B2 JP3253550 B2 JP 3253550B2
- Authority
- JP
- Japan
- Prior art keywords
- seal portion
- container
- seal
- heating
- heat
- 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.)
- Expired - Fee Related
Links
Landscapes
- Package Specialized In Special Use (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子レンジ等によ
って加熱調理が容易な電子レンジ調理用食品包装体に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food package for microwave cooking that can be easily cooked by a microwave oven or the like.
【０００２】[0002]
【従来の技術】最近では家庭で簡単に調理ができるよう
に調理済みの冷凍食品やレトルト食品が出回っており、
単に加熱処理するだけで食することができるようになっ
ている。これらの食品は加熱処理する際にはお湯につけ
るとか、蒸し器、電子レンジ等を使用するのが通常であ
るが、最も簡便なのが電子レンジによる高周波加熱調理
方法である。一般に電子レンジで食品を加熱する場合
は、食器に食品を入れたり、ラップフィルムで食品を包
んだりして行っている。また、従来からプラスチックフ
ィルムにより深絞り成形されたものにハンバーグ等の食
品をパックし密封した包装体やフランジ付のプラスチッ
ク容器に食品をパックし密封した包装体などが流通され
ている。これらの包装体は外気を完全に遮断するように
密封されているので、そのまま電子レンジに入れて加熱
すると食品から出る水蒸気の圧力により破裂してしま
う。そこでこの場合食品を包装体から取り出すか、予め
ナイフ等で包装体の一部を切り、蒸気の逃げ口を作って
から加熱処理を行わなければならなかった。最近ではイ
ージーピール性を付与することにより道具を使用せず手
で予め一部を開封し加熱処理ができるプラスチック容器
も多数見受けられるようになったが、加熱前にこれらの
開封処理を行うことは煩雑であり、消費者が開封処理を
加熱前にしておくことを忘れる危険性もあり、何も前処
理無しで電子レンジで加熱処理できることが望まれてい
る。2. Description of the Related Art Recently, cooked frozen foods and retort foods have been marketed so that they can be easily cooked at home.
They can be eaten simply by heat treatment. These foods are usually immersed in hot water or a steamer, a microwave oven or the like when heat-treated, but the simplest method is a high-frequency heating method using a microwave oven. Generally, when heating food with a microwave oven, food is put into tableware or the food is wrapped with a wrap film. Further, conventionally, a package body in which food such as a hamburger is packed and sealed in a deep-drawing molded product with a plastic film, or a package body in which food is packed and sealed in a plastic container with a flange have been distributed. Since these packages are sealed so as to completely block the outside air, if they are put into a microwave oven and heated as they are, they will burst due to the pressure of water vapor emitted from the food. Therefore, in this case, the food must be taken out of the package, or a part of the package has to be cut in advance with a knife or the like, and a steam vent has to be formed before performing the heat treatment. Recently, many plastic containers that can be opened in advance and heat-treated by hand without using tools by providing easy peeling have been found.However, it is not possible to open these before heating. It is complicated and there is a risk that the consumer may forget to keep the opening process before heating, and it is desired that the microwave can be heated without any pretreatment.
【０００３】一方、特に冷凍食品や要冷蔵の食品はその
品温が低いため電子レンジ加熱を行ってもかなりの時間
を要し、また内容物の加熱温度が不均一になり一部分が
加熱不足であるにも関わらず一部分は加熱しすぎて食品
が炭化するなどの変質を起こし味覚を損ねる場合も多
く、より簡便性を求めてこの加熱時間を短縮し、均一な
加熱ができることが望まれていた。これらの問題を解決
するため種々の検討がなされているが、容器の密封をヒ
ートシールで行い、かつヒートシール帯に容器の内側方
向に突出した特定の形態の突出部を設けて、この突出部
において上昇した容器の内圧を作用させて容器を開口さ
せることにより前記した欠点を回避させる密封容器（特
開昭６２−２３５０８０号公報、実開平１−６９７７３
号公報、実開平３−８７６８８号公報）等が考案されて
おり、またフランジのヒートシール部を二重シールとし
外シール部に蒸気排出口を１カ所以上設けて問題を回避
する密封容器（特願平６−０４９２０９号公報）等があ
る。[0003] On the other hand, frozen foods and refrigerated foods in particular require a considerable amount of time even when heated in a microwave oven due to their low product temperature. In spite of the fact, there are many cases where the food is excessively heated, causing deterioration such as carbonization of the food and impairing the taste.Therefore, it has been desired that the heating time can be shortened in order to obtain more simple and uniform heating. . Various studies have been made to solve these problems.However, the container is sealed by heat sealing, and a specific form of protrusion that protrudes inward of the container is provided in the heat seal band. A sealed container which avoids the above-mentioned drawback by opening the container by applying the internal pressure of the container which has been raised (Japanese Unexamined Patent Publication (Kokai) No. 62-235080, 1-69773).
Japanese Patent Application Laid-Open No. 3-87688) and a sealed container that avoids problems by providing a heat seal portion of the flange as a double seal and providing one or more steam discharge ports in the outer seal portion. No. 6-049209).
【０００４】前述の特開昭６２−２３５０８０号公報、
実開平１−６９７７３号公報、実開平３−８７６８８号
公報等に開示されている密封容器は、いずれも開封のた
めの前処理なく電子レンジによる高周波加熱は可能であ
るが、蒸気圧により突出部から開封された後連続したシ
ール帯のどの部分まで開封されるかは未定であり、蒸気
圧に負けて大きな開封口が開いてしまうため加熱終了ま
で充分な蒸気圧を確保することができず、加熱時間が長
くなってしまう。また特願平６−０４９２０９号公報に
開示されて密封容器は内シールが蒸気圧により開封する
場合広い幅にわたって同時に開くため電子レンジ内にお
いて大きな破裂音がし、加熱調理をしようとしている消
費者が驚いて加熱を中止してしまう場合があった。[0004] The above-mentioned JP-A-62-235080,
The sealed containers disclosed in Japanese Utility Model Laid-Open No. 1-69773, Japanese Utility Model Laid-Open No. 3-87688, and the like can perform high-frequency heating by a microwave oven without any pretreatment for opening the container. It is undecided to which part of the continuous seal band to be opened after opening from, it is not possible to secure a sufficient vapor pressure until the end of heating because a large opening is opened by losing the vapor pressure, The heating time becomes longer. In addition, the sealed container disclosed in Japanese Patent Application No. 6-049209, when the inner seal is opened by vapor pressure, is simultaneously opened over a wide width, so that a loud popping sound is generated in a microwave oven, and consumers who are trying to cook by heating are required. Surprisingly, heating was sometimes stopped.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、包装体を作
成する過程で蒸気の逃げ口が形成でき、開封のための前
処理することなく電子レンジで高周波加熱調理でき異音
を発生することもなく、なおかつ加熱終了まで一定で安
定した蒸気圧を容器内部に確保することにより加熱時間
を短縮し、内容物の加熱温度分布をより均一にできる電
子レンジ調理用食品包装体を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to form a steam vent in the process of producing a package, and to perform high frequency heating and cooking in a microwave oven without any pretreatment for opening, thereby generating abnormal noise. To provide a food package for microwave cooking that can shorten the heating time by ensuring a constant and stable vapor pressure inside the container until the end of heating, and can make the heating temperature distribution of the contents more uniform. is there.
【０００６】[0006]
【課題を解決するための手段】本発明は、容器本体のフ
ランジ部と蓋体とをヒートシールしてなるプラスチック
製の包装体であって、イージーピール性であるヒートシ
ール部の一部に、内シール部と外シール部の２重シール
とし、該内シール部と外シール部の間に溝部又は非シー
ル部を設けた部分が１カ所以上あり、該２重シール部の
内シール部は内側に突出した部分が１カ所以上有り、該
外シールの一部に該溝部又は非シール部が外気と連結さ
れた蒸気排出口を１カ所以上設けたことを特徴とする電
子レンジ調理用食品包装体である。SUMMARY OF THE INVENTION The present invention relates to a plastic package formed by heat-sealing a flange portion and a lid of a container body. The inner seal portion and the outer seal portion have a double seal, and there is at least one portion where a groove or a non-seal portion is provided between the inner seal portion and the outer seal portion, and the inner seal portion of the double seal portion is inside. Characterized in that at least one portion protruding from the outer seal is provided, and at least one portion of the outer seal is provided with a steam outlet at which the groove or non-seal portion is connected to the outside air. It is.
【０００７】[0007]
【発明の実施の形態】以下、１実施態様の図２、図３を
参照して、本発明の構成を説明する。容器本体１はフラ
ンジ２を有し、該フランジ部２は斜線のヒートシール部
３によって蓋体とヒートシールによりイージーピール溶
着される。該フランジ部２には溝部４を設けており、該
溝部４の内側には内シール部５、外シール部７を有する
形態となっている。ヒートシール部３はフランジ全巾で
ある必要はなく狭い幅のシール帯や狭い幅のシール帯と
ローレット状のヒートシールと組み合わせることも可能
である。また、必要に応じて加熱後の開封時に開封口部
に当たる部分に烏口形状のシール形状にしても良い。内
シール部５は内側に突出した突出部６が１カ所以上設け
られている。突出部６の形状は特に限定するものではな
い。また該外シール部７には溝部４より外側に向かって
外気と繋がるように蒸気排出口９が１カ所以上設けられ
ている。該蒸気排出口９は２重シール部の外シール部７
のどの位置に配置しても良い。蒸気排出口９の断面積は
適切な蒸気圧を得るために内容物や容器の容量により調
整する必要があるが一般に１〜１０mm2 程度が望まし
い。蒸気排出口の断面積が小さすぎると蒸気内圧が高く
なりすぎ該２重シール部以外のシール帯が破袋し内圧が
調整不能となり逆に大きすぎると内圧が低く加熱時間短
縮の効果が得られない。２重シール部の長さＣは蒸気排
出口９による蒸気圧調整の妨げにならない程度に広い方
がよく１０〜４０mm程度が好ましい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to FIGS. The container body 1 has a flange 2, and the flange portion 2 is easily peel-welded to the lid by heat sealing with a hatched heat sealing portion 3. The flange portion 2 is provided with a groove portion 4, and an inner seal portion 5 and an outer seal portion 7 are provided inside the groove portion 4. The heat seal portion 3 does not need to have the entire width of the flange, and can be combined with a narrow width seal band or a narrow width seal band and a knurled heat seal. Further, if necessary, a portion corresponding to the opening portion at the time of opening after heating may be formed into a crow-mouthed seal shape. The inner seal portion 5 is provided with one or more protruding portions 6 protruding inward. The shape of the protrusion 6 is not particularly limited. Further, the outer seal portion 7 is provided with one or more steam discharge ports 9 so as to connect to the outside air from the groove portion 4 to the outside. The steam outlet 9 is provided at the outer seal portion 7 of the double seal portion.
It may be arranged at any position. The cross-sectional area of the steam outlet 9 needs to be adjusted according to the contents and the capacity of the container in order to obtain an appropriate steam pressure, but generally it is preferably about 1 to 10 mm 2 . If the cross-sectional area of the steam discharge port is too small, the internal pressure of the steam becomes too high, and the sealing band other than the double seal portion breaks, so that the internal pressure cannot be adjusted. Conversely, if it is too large, the internal pressure is low and the effect of shortening the heating time can be obtained. Absent. The length C of the double seal portion is preferably wide so as not to hinder the adjustment of the steam pressure by the steam outlet 9, and is preferably about 10 to 40 mm.
【０００８】突出部６について拡大図の図７ａ、図７
ｂ、図７ｃを参照して説明を補足する。前述の従来技術
においては、電子レンジでの加熱中の内圧により開封す
る際、図７ａのヒートシール帯の内、斜線部が開封され
中央部に穴が開き蒸気を抜くことが前提となっておりヒ
ートシール帯が図７ｂの様な形状であれば斜線部が開封
されても穴が開かないため蒸気を逃がすことができな
い。従って従来技術においては突出部のシール帯の外縁
であって最も容器の内側方向に位置する部分の最内部８
がヒートシール部の内縁にある該突部形成開始点を結ん
だ線（破線イ）よりも容器の内側に形成されることが重
要な要素となる。さらに前述のように図７ａにおける斜
線部が開封した後そこから続くヒートシール帯が内圧に
負けて引き続き開封を続ける可能性が高くこの場合蒸気
抜きの穴の大きさが一定しない。しかし本発明において
は図７ｃに示す斜線部が開封されるため該最内部８の部
分が該破線イより内側に形成される必要はなく、外側に
形成されていても蒸気を抜くことが可能である。また、
図７ｃにおける斜線部の内中央から開封が始まり端部へ
広がる途中で十分な開口面積が確保されるため斜線部を
越えて開封することはなく、斜線部上のどの部分で開封
が停止しても容器の内圧は外シール部に設けた溝により
規制されているため変化することなく一定である。従っ
て本発明における突出部は従来技術における突出部とは
異質のものである。FIG. 7A and FIG.
b, description will be supplemented with reference to FIG. 7c. In the prior art described above, it is premised that, when the package is opened by the internal pressure during heating in the microwave oven, the hatched portion is opened, a hole is opened in the center portion, and steam is released in the heat seal zone of FIG. 7A. If the shape of the heat seal band is as shown in FIG. 7B, the holes cannot be opened even if the hatched portion is opened, so that steam cannot escape. Therefore, in the prior art, the innermost portion of the outer edge of the seal band of the protrusion and located at the most inward direction of the container.
It is an important element that is formed on the inner side of the container than a line (broken line A) connecting the protrusion formation start point on the inner edge of the heat seal portion. Further, as described above, after the hatched portion in FIG. 7A is opened, there is a high possibility that the subsequent heat seal zone loses the internal pressure and continues to open, and in this case, the size of the steam vent hole is not constant. However, in the present invention, since the hatched portion shown in FIG. 7C is opened, the innermost portion 8 does not need to be formed inside the broken line A, and even if it is formed outside, it is possible to release steam. is there. Also,
Opening starts from the center of the hatched portion in FIG. 7C, and a sufficient opening area is secured on the way to the end, so that opening is not performed beyond the hatched portion. Also, since the internal pressure of the container is regulated by the groove provided in the outer seal portion, it is constant without change. Therefore, the protrusion in the present invention is different from the protrusion in the prior art.
【０００９】ここで容器本体１の平面図の形態は、三角
状、四角状、楕円状、円状いずれであっても構わないし
２分割、３分割など収納部が分割された容器においても
応用できる。フランジ部２は開封口付近にタブを設けた
り両サイドに把手を付加するなど各種の工夫が考えられ
る。また容器本体はプラスチックシートを真空成形や圧
空成形等によって得られたものでもよいし、射出成形で
得られたものでも構わない。容器本体に使用するプラス
チックシートはポリプロピレン（ＰＰ）等の単層でもよ
いし、バリア性の良いエチレン−酢酸ビニル共重合体け
ん化物（ＥＶＯＨ）等を使用した多層シートでも構わな
い。蓋体はＰＥＴ、ナイロンなどの引き裂き強度のある
基材層とシーラント層を有し、ＥＶＯＨなどのバリア層
を加えたものでも良い。また、容器のシール層もしくは
蓋体のシール層はヒートシールした際にイージーピール
されるものでなければならず、凝集剥離タイプでも層間
剥離タイプでも構わない。The plan view of the container body 1 may be triangular, quadrangular, elliptical, or circular, and may be applied to a container having a divided storage portion such as two or three. . For the flange portion 2, various devices can be considered, such as providing a tab near the opening and attaching handles to both sides. Further, the container body may be obtained by vacuum molding or pressure molding of a plastic sheet, or may be obtained by injection molding. The plastic sheet used for the container body may be a single layer such as polypropylene (PP) or a multilayer sheet using a saponified ethylene-vinyl acetate copolymer (EVOH) having good barrier properties. The lid may have a tear-resistant base material layer such as PET or nylon and a sealant layer, and may have a barrier layer such as EVOH. The seal layer of the container or the seal layer of the lid must be easily peeled when heat-sealed, and may be of the cohesive peeling type or the interlayer peeling type.
【００１０】この容器本体１を使用して本発明の食品包
装体にするには、容器本体に食品を充填し、蓋体を容器
本体のフランジ部の２重シール部の内シール部と外シー
ル部及びそれ以外のフランジ部を同時にヒートシールす
ることによって得られる。本発明の包装体を使用する場
合は、前処理することなくそのまま電子レンジに入れて
加熱調理する。加熱すると共に温度が上がり食品から蒸
気が発生し、包装体の内圧が上がり特に蓋体が膨らんで
くる。内圧が一定以上になると内シール部の一部が突出
部より異音無く開裂し、蒸気が溝部を通り排出口より一
定に調整されて排出され、蓋体は破裂することなくまた
内圧が一定に確保されたまま食品が短時間に適温に加熱
され、シール部分はイージーピールなので加熱後は容易
に開封することができ、収納されている食品を容易に取
り出すこともでき、また包装体に入ったままの食品を食
するようになっている。In order to use the container body 1 to form the food package of the present invention, the container body is filled with food, and the lid is sealed with the inner seal portion and the outer seal portion of the double seal portion of the flange portion of the container body. It is obtained by heat sealing the part and the other flange parts simultaneously. When the package of the present invention is used, it is placed in a microwave oven and cooked without pretreatment. When heated, the temperature rises, and steam is generated from the food, so that the internal pressure of the package increases, and in particular, the lid swells. When the internal pressure exceeds a certain level, a part of the inner seal part ruptures without noise from the protruding part, the steam passes through the groove and is regulated and discharged from the discharge port, and the lid body does not rupture and the internal pressure remains constant. The food is heated to a suitable temperature in a short time while it is secured, and the sealed part is easy peel, so it can be easily opened after heating, the stored food can be easily taken out, and it has entered the package They eat food as it is.
【００１１】図４及び図５に別な実施態様を示す。容器
本体１の平面図の形態が円形でフランジ部２の２重シー
ル部の内シール線５の突出部６を３カ所としたものであ
る。又、図６に２分割容器に応用した例を示す。各収納
部にそれぞれ１つずつ２重線シール部を設け、それぞれ
の外シール部に設けた蒸気排出口の断面積は各収納部の
容積と内容物によって最適な断面が設計され、容器の成
形時に確定しておくことができる。FIGS. 4 and 5 show another embodiment. The plan view of the container body 1 has a circular shape with three projecting portions 6 of the inner sealing line 5 of the double sealing portion of the flange portion 2. FIG. 6 shows an example applied to a two-piece container. Each storage section is provided with a double wire seal section, and the cross-sectional area of the steam discharge port provided in each outer seal section is designed to be an optimum cross-section according to the volume and contents of each storage section, and the container is formed. Can be fixed at times.
【００１２】[0012]
【実施例】図２及び図３に示す形態の容器を厚み０．８
mmのポリプロピレン（ＰＰ）シートを真空成形によりに
成形し、カレー２００ｇを充填し、イージーピールタイ
プの蓋体を簡易シール機で１９０℃エア圧３Kg／cm2 、
１．５秒で２回シールした後、しばらく放置し、電子レ
ンジ（５００Ｗ）により５分間加熱した。約２分で２重
シール部の内シール部がほとんど無音でスムーズに開封
し、その後加熱終了まで外シール部に設けた蒸気排出口
９より蒸気が排出され、しかも排出量が適当に調整され
ているため容器及び蓋体がやや膨らんだ状態が一定に確
保され内圧がかかっていることを示した。加熱が終了す
ると容器及び蓋体の膨らみはなくなりもとの形状に戻っ
た。DESCRIPTION OF THE PREFERRED EMBODIMENTS A container of the form shown in FIGS.
mm polypropylene (PP) sheet is formed by vacuum forming, filled with 200 g of curry, and an easy peel type lid is sealed at 190 ° C. with an air pressure of 3 kg / cm 2 by a simple sealing machine.
After sealing twice for 1.5 seconds, it was left for a while and heated for 5 minutes in a microwave oven (500 W). In about 2 minutes, the inner seal portion of the double seal portion opens almost silently and smoothly, and then the steam is discharged from the steam discharge port 9 provided in the outer seal portion until the heating is completed, and the discharge amount is appropriately adjusted. Therefore, it was shown that the container and the lid were slightly inflated and the internal pressure was applied. When the heating was completed, the swelling of the container and the lid disappeared and the container returned to its original shape.
【００１３】次に、 該容器にカレー２００ｇを充填し蓋体を使用せず解放
したままのもの。 該容器にカレー２００ｇを充填し蓋体をヒートシール
し事前の開封処理をしないもの。 該容器にカレー２００ｇを充填し蓋体をヒートシール
した後、事前にヒートシールの一部を開封したもの。 の３種を用意しそれぞれの容器の中央に置いたほぼ同じ
大きさの芋の中心に温度センサーを差し込み電子レンジ
（５００Ｗ）で５分間加熱した。温度センサーには光フ
ァイバー式の温度計を使用し高周波加熱中の温度変化を
測定可能である。上記〜のタイプのそれぞれの加熱
中の温度変化をグラフにしたものを図１に示す。グラフ
からわかるように該容器のフランジ部に設けた２重シー
ル部の外シール部にある蒸気排出口の働きによりタイ
プのみが温度上昇が速く９０℃に達するまでの時間を約
１分短縮できた。電子レンジ内の温度上昇を配慮し順番
を入れ替え繰り返したがほぼ同じ結果であった。Next, the container is filled with 200 g of curry and is left open without using a lid. The container is filled with 200 g of curry, the lid is heat-sealed, and the container is not opened in advance. The container was filled with 200 g of curry, the lid was heat-sealed, and then a part of the heat seal was opened in advance. Were prepared, and a temperature sensor was inserted into the center of a potato of approximately the same size placed in the center of each container, and heated with a microwave oven (500 W) for 5 minutes. An optical fiber thermometer can be used as the temperature sensor to measure temperature changes during high frequency heating. FIG. 1 is a graph showing the temperature change during heating of each of the above-mentioned types. As can be seen from the graph, the function of the steam outlet in the outer seal portion of the double seal portion provided on the flange portion of the container can shorten the time required for the type only to rapidly rise to 90 ° C. by about 1 minute only due to the function of the steam outlet. . The order was changed and repeated considering the temperature rise in the microwave oven, but the results were almost the same.
【００１４】[0014]
【発明の効果】本発明の容器を用いれば次の利点が得ら
れる。 (1) 食品を充填した包装体の流通、保管に際して密封性
が維持でき雑菌の混入のおそれ、内容物のこぼれを防止
できる。 (2) ２重シール部の外シールの蒸気排出口により加熱中
の蒸気排出量を調整し内圧を高く一定にできるので加熱
時間を短縮でき、内容物の加熱温度分布も均一にでき
る。 (3) 電子レンジ等で加熱する際、内圧の上昇によって２
重シール部の内シール部が開口するので容器の破裂や変
形あるいは容器の破裂による吹きこぼれが防止できる。
また、加熱前の開封処理が不要なので簡便に使用でき
る。 (4) ２重シール部の内シールの突出部から徐々に開口す
るため破裂音に驚くことがない。 (5) 一般の成形工程、一般のヒートシールで生産可能で
あるため製造コストが上昇することがない。According to the container of the present invention, the following advantages can be obtained. (1) Sealability can be maintained during distribution and storage of a package filled with food, and there is a risk of contamination by various bacteria, and the contents can be prevented from spilling. (2) The amount of steam discharged during heating can be adjusted by the steam outlet of the outer seal of the double seal portion to keep the internal pressure high, so that the heating time can be shortened and the heating temperature distribution of the contents can be made uniform. (3) When heating in a microwave oven, etc.,
Since the inner seal portion of the heavy seal portion is opened, rupture or deformation of the container or blow-out due to rupture of the container can be prevented.
In addition, since opening treatment before heating is unnecessary, it can be used easily. (4) The opening is gradually opened from the protruding portion of the inner seal of the double seal portion, so that there is no surprise to the plosive sound. (5) Since it can be produced by a general molding process and a general heat seal, the production cost does not increase.
【図１】電子レンジで加熱中の温度変化をグラフにした
ものFIG. 1 is a graph of a temperature change during heating in a microwave oven.
【図２】本発明の包装体の平面図である。FIG. 2 is a plan view of the package of the present invention.
【図３】図３ａは図２において断面Ａの側面図であり、
図３ｂは図２において断面Ｂの側面図である。FIG. 3a is a side view of section A in FIG. 2;
FIG. 3b is a side view of section B in FIG.
【図４】本発明の包装体の突出部を３カ所設けた平面図
である。FIG. 4 is a plan view in which three protruding portions of the package of the present invention are provided.
【図５】図５ａは図４において断面Ａの側面図であり、
図５ｂは図４において断面Ｂの側面図である。FIG. 5a is a side view of section A in FIG. 4;
FIG. 5b is a side view of section B in FIG.
【図６】本発明の包装体の２分割容器を示す平面図であ
る。FIG. 6 is a plan view showing a two-part container of the package of the present invention.
【図７】図７ａは従来技術の一例における突出部の拡大
図であり、図７ｂは図７ａの説明を補足するものであ
り、図７ｃは本発明における突出部の拡大図である。7A is an enlarged view of a protrusion in an example of the related art, FIG. 7B supplements the description of FIG. 7A, and FIG. 7C is an enlarged view of the protrusion in the present invention.
１：容器本体 ２：フランジ部 ３：ヒートシール部（斜線部） ４：溝部 ５：内シール部 ６：突出部 ７：外シール部 ８：最内部 ９：蒸気排出口 1: container body 2: flange portion 3: heat seal portion (hatched portion) 4: groove portion 5: inner seal portion 6: projecting portion 7: outer seal portion 8: innermost portion 9: steam discharge port
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−235080（ＪＰ，Ａ) 特開 平７−257662（ＪＰ，Ａ) 特開 平８−276966（ＪＰ，Ａ) 特開 平11−171261（ＪＰ，Ａ) 実開 昭55−179146（ＪＰ，Ｕ) 実開 平３−87688（ＪＰ，Ｕ) 実開 平１−69773（ＪＰ，Ｕ) 実開 平６−25681（ＪＰ，Ｕ) 実開 昭63−114976（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B65D 81/34 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-235080 (JP, A) JP-A-7-257662 (JP, A) JP-A-8-276966 (JP, A) JP-A-11-257 171261 (JP, A) Japanese Utility Model Showa 55-179146 (JP, U) Japanese Utility Model Hei 3-87688 (JP, U) Japanese Utility Model Utility Model 1-69773 (JP, U) Japanese Utility Model Utility Model 6-25681 (JP, U) 63-14976 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) B65D 81/34
Claims (1)
ールしてなるプラスチック製の包装体であって、イージ
ーピール性であるヒートシール部の一部に、内シール部
と外シール部の２重シールとし、該内シール部と外シー
ル部の間に溝部又は非シール部を設けた部分が１カ所以
上あり、該２重シール部の内シール部は内側に突出した
部分が１カ所以上有り、該外シールの一部に該溝部又は
非シール部が外気と連結された蒸気排出口を１カ所以上
設けたことを特徴とする電子レンジ調理用食品包装体。1. A plastic package formed by heat-sealing a flange portion and a lid of a container body, wherein an inner seal portion and an outer seal portion are formed in a part of an easy-peel heat seal portion. There is at least one portion where a groove or a non-seal portion is provided between the inner seal portion and the outer seal portion as a double seal, and the inner seal portion of the double seal portion has at least one portion protruding inward. A food package for cooking microwave oven, characterized in that a part of the outer seal is provided with one or more steam outlets in which the groove or non-seal part is connected to the outside air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03889197A JP3253550B2 (en) | 1997-02-24 | 1997-02-24 | Microwave cooked food packaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03889197A JP3253550B2 (en) | 1997-02-24 | 1997-02-24 | Microwave cooked food packaging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10236542A JPH10236542A (en) | 1998-09-08 |
| JP3253550B2 true JP3253550B2 (en) | 2002-02-04 |
Family
ID=12537841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03889197A Expired - Fee Related JP3253550B2 (en) | 1997-02-24 | 1997-02-24 | Microwave cooked food packaging |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3253550B2 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPH10236542A (en) | 1998-09-08 |
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