JP2000168851A - Microwave oven-oriented packing bag - Google Patents

Microwave oven-oriented packing bag

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Publication number
JP2000168851A
JP2000168851A JP10355315A JP35531598A JP2000168851A JP 2000168851 A JP2000168851 A JP 2000168851A JP 10355315 A JP10355315 A JP 10355315A JP 35531598 A JP35531598 A JP 35531598A JP 2000168851 A JP2000168851 A JP 2000168851A
Authority
JP
Japan
Prior art keywords
bag
sheet
seal
heated
contents
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.)
Pending
Application number
JP10355315A
Other languages
Japanese (ja)
Inventor
Goji Asano
剛司 浅野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP10355315A priority Critical patent/JP2000168851A/en
Publication of JP2000168851A publication Critical patent/JP2000168851A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide an entire simple structure, facilitate its manufacturing operation, prevent a bag from being ruptured even through the bag is put in a microwave over and heated there, enable an opening for extracting vapor to be easily made and a heating operation for the bag to be carried out while the vapor is being effectively released. SOLUTION: A folding sheet 4 folded into two segments is inserted at the bottom side of a bag between a front sheet 2 and a rear sheet 3 forming the bag. The front sheet 2 and the rear sheet 3 are heat sealed 5 at their both sides. At the bottom side of the bag, the front sheet 2 and the rear sheet 3 as well as the folding sheet 4 are heat sealed 6 to make a bag having the bottom part. Strength of the heat seal part 6 is made weaker than that of the heat-seal part 5 between the front sheet and the rear sheet. A front side bottom seal 61 has narrower width than the rear side bottom seal 62. When a packing bag 1 having contents sealingly enclosed therein is put in a microwave over and heated therein, moisture content in the bag is evaporated to expand the bag, and the pressure increasing while the contents in the bag are being wet with vapor is transmitted in a concentric manner from the central part of the bag toward the circumferential edge. Then, a small opening is formed at the central part of the front sheet bottom seal 61 of narrow width to cause excessive vapor to be released and then the contents can be heated while being contained in the bag.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は包装袋に関し、特に
内容物を封入したまま電子レンジにおいて加熱可能な包
装袋に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag, and more particularly to a packaging bag which can be heated in a microwave oven while the contents are sealed.

【0002】[0002]

【従来の技術】従来、酢豚、ハンバ−グステ−キ、シチ
ュー、カレ−、八宝菜その他の食品類等を包装袋に封入
した調理済食品は、これを食べる際に包装袋に封入した
ままの状態で電子レンジに入れて加熱すると、加熱につ
れて袋が膨張して破袋してしまうことから、予め包装袋
から調理済食品を食器類に取出して、電子レンジで加熱
するようにしているので、利用に際して何かと手間がか
かる。
2. Description of the Related Art Conventionally, cooked foods in which a sour pork, hamburger steak, stew, curry, Happo greens, and other foods are sealed in a packaging bag are kept as they are when the food is eaten. When heated in a microwave oven in the state of で, the bag expands and breaks as it is heated, so the cooked food is taken out of the packaging bag in advance to the dishes and heated in the microwave oven. , It takes some time to use it.

【0003】そこで、内容物が封入されている包装袋
を、そのまま、直接、電子レンジ内に入れて加熱するこ
とができるようなものが要望されて来た。上記したよう
に、内容物を包装袋に封入したままの状態で電子レンジ
に入れて加熱すると、袋内の水分が急速に蒸気化して容
積が増大し、袋が破裂して内容物が飛び散って出てしま
う。そこで、上記加熱によって生じる蒸気を袋内から少
しずつ上手に逃がしてやらなければならない。
[0003] Therefore, there has been a demand for a packaging bag in which the contents are enclosed, which can be directly heated in a microwave oven as it is. As described above, when the contents are placed in a microwave oven while being sealed in the packaging bag and heated, the moisture in the bags evaporates rapidly, the volume increases, the bags burst, and the contents scatter. I will come out. Therefore, the steam generated by the above-mentioned heating must be escaped from the bag little by little.

【0004】こうした加熱時に発生する蒸気を袋内から
逃がすための手段がこれまでも種々考えられて来た。例
えば、図6に示すように、一側に開口21を設け、シー
トの周縁をシール22し、シートの一面側は合掌貼り2
3にしており、この袋に内容物を詰め、開口21をシー
ルすれば密封状態を保つことができる。この包装体を電
子レンジに入れて加熱すると、発生する蒸気の圧力によ
って、合掌貼り部23のシール部24が先ず剥がされて
緩衝部25に蒸気が入り、次にシール部26またはシー
ル部27が剥がされて、外方に蒸気を逃がすことができ
る。しかし、この包装袋は、形状やシ−ル構造が複雑で
あるし、袋製造の精度を上げるために作業が煩雑化す
る。また、加工機械の構造上から一面づつしか製袋でき
ないし寸法的な制約もあり、製造コストも大幅に上昇す
るようになる。
Various means have been conceived for releasing the steam generated during such heating from the inside of the bag. For example, as shown in FIG. 6, an opening 21 is provided on one side, the periphery of the sheet is sealed 22, and one side of the sheet is
If the bag is filled with the contents and the opening 21 is sealed, the sealed state can be maintained. When the package is placed in a microwave oven and heated, the pressure of the generated steam peels off the seal portion 24 of the gasket sticking portion 23 first to allow steam to enter the buffer portion 25, and then the seal portion 26 or the seal portion 27 Peeled off, allowing steam to escape outwards. However, this packaging bag is complicated in shape and seal structure, and the operation is complicated in order to increase the accuracy of bag production. In addition, due to the structure of the processing machine, bags can be made only one by one, and there are dimensional restrictions, so that the manufacturing cost is greatly increased.

【0005】[0005]

【発明が解決しようとする課題】本発明は、全体に簡素
な構造であって製造し易く、電子レンジに入れて加熱し
たときにも破袋させることなく、蒸気抜きの開口を容易
に作ることができて、蒸気を効果的に逃がしながら加熱
できるようなものを得ようとするものである。
SUMMARY OF THE INVENTION The present invention has a simple structure as a whole, is easy to manufacture, and does not break the bag even when heated in a microwave oven. It is intended to obtain something that can be heated while effectively releasing steam.

【0006】[0006]

【課題を解決するための手段】内容物が詰められ密封さ
れている包装袋を電子レンジに入れて加熱すると、包装
袋の中心部から加熱されるようになり、水分の蒸気化に
よって容積が増大して行くが、これに伴う内圧の増大
は、袋の中心部から同心円状に袋の周縁に向って波及し
て行く。本発明は、表裏シ−トの間に折込シ−トを挿入
して上記表裏シ−トと折込シ−トをヒ−トシ−ルして底
部を形成した有底袋とし、電子レンジによって加熱され
たとき上記折込シ−トと表裏シ−トのシール強度が表裏
シ−ト間のシール強度よりも弱くなるように形成し、か
つ上記該底部を形成する折込シ−トと表裏シ−ト間のヒ
−トシ−ルの一方の幅を狭く形成するものである。
Means for Solving the Problems When a packaging bag filled with contents and sealed is put in a microwave oven and heated, the packaging bag is heated from the center and the volume is increased by vaporization of moisture. However, the increase in the internal pressure accompanying this spreads concentrically from the center of the bag toward the periphery of the bag. According to the present invention, a folded sheet is inserted between the front and back sheets to heat seal the front and back sheets and the folded sheet to form a bottomed bag, which is heated by a microwave oven. The folded sheet and the front and back sheets are formed such that the sealing strength between the front and back sheets is weaker than the sealing strength between the front and back sheets, and the folded sheet and the front and back sheets forming the bottom are formed. The width of one of the heat seals is reduced.

【0007】こうした包装袋に内容物を詰めたものを電
子レンジに入れて加熱すると、上記した加熱による内圧
の増大は、加熱に伴って上記底部のシール強度が低下し
ている狭い幅のシ−ル部の中心部に及んでこの部分のシ
−ルを剥離して小さな開口を形成し、ここから徐々に蒸
気を逃がすようになるので、他のシ−ル部を剥がした
り、表裏シートを破ったりして包装袋を破袋させるよう
なこともなく、内容物を所望の状態に加熱することがで
きる。
[0007] When the packaged bag filled with the contents is heated in a microwave oven, the increase in the internal pressure due to the above-mentioned heating causes the sealing strength of the bottom portion to decrease with the heating, resulting in a narrow width of the sheet. A small opening is formed by peeling off the seal in this part reaching the center of the seal part, and steam gradually escapes from this part, so that other seal parts are peeled off or the front and back sheets are broken. The contents can be heated to a desired state without breaking the packaging bag.

【0008】[0008]

【発明の実施の形態】図示の袋1は、表シ−ト2と裏シ
−ト3の間に、二つ折りした折込シ−ト4を底部側より
挿入し、両側では表裏シートをヒ−トシ−ル5し、底部
では表裏シートと上記折込シ−ト4をヒートシール6し
て、有底7の袋としている。上記表裏シート2、3と折
込シ−ト4のヒートシール6の強度は、表裏シート間の
ヒートシール5の強度よりも、電子レンジで加熱した際
に弱くなるように、例えば、表裏シートと折込シ−トの
材質を変えたり、シーラントを変えること等によって形
成されている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS In a bag 1 shown in the drawings, a folded sheet 4 is inserted between a front sheet 2 and a back sheet 3 from the bottom side, and the front and back sheets are heated on both sides. At the bottom, the front and back sheets and the folded sheet 4 are heat-sealed 6 to form a bag with a bottom 7. The strength of the heat seal 6 between the front and back sheets 2 and 3 and the folding sheet 4 is lower than the strength of the heat seal 5 between the front and back sheets when heated in a microwave oven. It is formed by changing the material of the sheet or changing the sealant.

【0009】そして、上記底部7を形成しているヒ−ト
シ−ル6において、表シ−ト2と折込シ−ト4との間の
表底シ−ル61は、裏シ−ト3と折込シ−ト4との間の
裏底シ−ル62よりも、そのヒートシ−ルの幅を狭く形
成している。また、両側の表裏シート2、3のヒートシ
ール5の幅は、上記表底シ−ル61よりも広く形成する
方が一層安全である。
[0009] In the heat seal 6 forming the bottom 7, the outer bottom seal 61 between the front sheet 2 and the folding sheet 4 is connected to the back sheet 3. The width of the heat seal is made smaller than that of the back bottom seal 62 between the folding sheet 4. It is safer to form the heat seal 5 of the front and back sheets 2 and 3 on both sides wider than the front bottom seal 61.

【0010】こうした袋1に、酢豚、ハンバーグ、その
他の調理済食品(図示略)を詰め、袋の上部の表裏シー
ト2、3間を、通例上記表底シ−ル61よりも広幅にヒ
−トシ−ル8すると、中身の調理済食品は袋内に密封状
態に保持されるから、必要により内容物に応じて加熱殺
菌を行う。この調理済食品はこの包装袋によって密封状
態が保たれているので、この状態で保存することができ
る。
[0010] Such a bag 1 is filled with sweet and sour pork, hamburger, and other prepared food (not shown), and the space between the front and back sheets 2 and 3 at the top of the bag is usually wider than the above-mentioned front bottom seal 61. When the sealer 8 is used, the cooked food inside is held in a sealed state in the bag, so that heat sterilization is performed according to the contents as necessary. The cooked food is kept sealed by the packaging bag, and can be stored in this state.

【0011】これを利用する場合、包装袋1の表シ−ト
2が上になるようにして電子レンジに入れる。その際、
用心のために皿などの上に載せてから入れるようにする
とよい。電子レンジによって加熱すると、袋の中心部か
ら加熱が始まり、袋内の水分は蒸気化して袋を膨らま
せ、その水蒸気は袋内に保持されて内容物を蒸らすよう
にしながら加熱し、更に袋内で増大する圧力は、図4に
示すように袋の中心部から周縁部に向って同心円状9に
波及するようになる。
When this is used, it is placed in a microwave oven with the front sheet 2 of the packaging bag 1 facing upward. that time,
It is advisable to put it on a plate or the like before use as a precaution. When heating with a microwave oven, heating starts from the center of the bag, the moisture in the bag evaporates and expands the bag, and the water vapor is held in the bag and heated while steaming the contents. The increasing pressure spreads concentrically 9 from the center of the bag toward the periphery as shown in FIG.

【0012】この増大する圧力は、袋のヒ−トシ−ル部
に及んでこれを引剥すように作用するが、加熱されたと
きの底シール6のシール強度は表裏シート間のシール5
の強度よりも低いし、底シール6の内で表底シ−ル61
のシ−ル幅が狭くなっているので、袋内が一定以上の圧
力に達すると、先づこの表底シ−ル61の中央部63が
剥がされ、この中央部に小さな開口が形成されるように
なる。
The increased pressure acts on the heat seal portion of the bag to peel it off. When heated, the sealing strength of the bottom seal 6 is reduced by the seal 5 between the front and back sheets.
And the outer bottom seal 61 in the bottom seal 6.
When the pressure in the bag reaches a certain level or more, the central portion 63 of the outsole seal 61 is peeled off first, and a small opening is formed in the central portion. Become like

【0013】加熱により発生する蒸気で余分なものは、
この開口から次々と抜けて行くが、袋1の膨張に伴って
上記表底シ−ル61は上方を向くようになるから、蒸気
も自然と上方へ逃げて行くようになって袋内の液状物が
溢れ出てくることもない。また、袋内の圧力が更に高く
なると上記開口が一層拡げられるようになって、袋の他
の部分が破られることもないので、包装袋内に食品を確
実に保持した状態で、加熱ムラも少なく程よい蒸らし作
用を得ながら均一的な加熱を行うことができる。加熱が
済んだら電子レンジから取出し、包装袋の開封用切込み
10などを使用して開封すれば、加熱した内容物を取り
出して利用することができる。
The extra steam generated by heating is
As the bag 1 expands, the outer bottom seal 61 is directed upward, so that the vapor naturally escapes upward and the liquid in the bag is released. Nothing overflows. Further, when the pressure in the bag is further increased, the opening can be further expanded, and the other portion of the bag is not broken. Uniform heating can be performed while obtaining a small and moderate steaming action. When the heating is completed, the heated contents are taken out of the microwave oven and opened using the opening notch 10 of the packaging bag or the like, so that the heated contents can be taken out and used.

【0014】この包装袋1を製造する場合、表シ−ト2
と裏シ−ト3を重ね合わせ、その間に2つ折した折込シ
−ト4を底部側から挿入して両側部、底部の三方をシ−
ル5,6し、その後で表シ−ト2の底部側を一定幅に切
り除けば幅の狭い表底シ−ル61が形成されるので、簡
易かつ能率的に製造を行うことができる。
When this packaging bag 1 is manufactured, a front sheet 2
And the back sheet 3 are superimposed on each other, and the folded sheet 4 folded in between is inserted from the bottom side to seal both sides and the bottom.
If the bottom side of the front sheet 2 is cut off to a fixed width, the narrow bottom sole 61 is formed, so that the production can be performed simply and efficiently.

【0015】また、巻戻した表シ−ト2と裏シ−ト3の
両側からそれぞれ2つ折した折込シ−ト4を供給して挿
入し、上記表裏シート2、3の間をヒートシール5し、
また、両側の表裏シートと折込シ−ト4の間をヒートシ
ール6して表シート2側を狭幅に切り除き、表裏シート
2、3を中央部で切り分ければ、同時に2袋ずつ製造す
ることができて、一層効率的である。
Further, two folded sheets 4 are supplied from both sides of the unwound front sheet 2 and the back sheet 3 and inserted, and a heat seal 5 is provided between the front and back sheets 2 and 3. And
Also, heat seal 6 is applied between the front and back sheets on both sides and the folding sheet 4 to cut off the front sheet 2 side to a narrow width, and the front and back sheets 2 and 3 are cut at the center, thereby simultaneously producing two bags. Can be more efficient.

【0016】図5に示すものは、上記したシール幅の狭
い表底シール61の中央部63に外方より弧状などの切
欠部12を形成したものであって、電子レンジによる加
熱によって上記中央部63に一層確実に小さな開口を形
成することができ、袋内に充満される水蒸気の過剰分を
抜くことができる。
FIG. 5 shows a case where a notch 12 having an arc shape or the like is formed from the outside at a center portion 63 of the above-mentioned outer bottom seal 61 having a small seal width. The center portion 63 is heated by a microwave oven. A small opening can be formed in the bag 63 more reliably, and an excess amount of water vapor filled in the bag can be removed.

【0017】[0017]

【発明の効果】本発明は上記したように、袋の底を形成
しているシ−ル部の加熱時のシール強度を他部よりも小
さくし、また底部シールの一部のシ−ル幅を狭くするこ
とによって、電子レンジによって加熱した場合に、蒸気
の発生に伴って袋内で増大する内圧によってこの狭幅シ
−ル部に小さな開口を作り、そこから確実に蒸気を逃が
すようにするので、袋が破かれて中身が飛出して来るよ
うなこともないから、袋をそのまま電子レンジに入れて
加熱することができ、加熱の際に手間がかからず、便利
に使用することができる。また、底部の狭幅のシ−ル部
は、一部を狭い幅にカットすることによって容易に形成
することができるから、製造も容易で経済的に作ること
ができる。
As described above, according to the present invention, the sealing strength at the time of heating the seal portion forming the bottom of the bag is made smaller than the other portions, and the seal width of a part of the bottom seal is provided. When a microwave oven is heated, a small opening is formed in the narrow seal portion by the internal pressure that increases in the bag due to the generation of steam, so that the steam can be surely released therefrom. Since the bag does not break and the contents come out, the bag can be placed in a microwave and heated as it is. it can. Further, the narrow seal portion at the bottom can be easily formed by cutting a part of the seal portion into a narrow width, so that the manufacture is easy and economical.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施例を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of the present invention.

【図2】図1の底部を判り易く示す一部省略斜視図であ
る。
FIG. 2 is a partially omitted perspective view showing a bottom portion of FIG. 1 for easy understanding.

【図3】図1の底部の一部省略断面図である。FIG. 3 is a partially omitted sectional view of a bottom portion of FIG. 1;

【図4】加熱時に袋内の圧力が波及して行く状態を示す
説明図である。
FIG. 4 is an explanatory view showing a state in which pressure in a bag spreads during heating.

【図5】本発明の他の実施例の底部を判り易く示す一部
省略斜視図である。
FIG. 5 is a partially omitted perspective view showing the bottom of another embodiment of the present invention for easy understanding.

【図6】従来の包装袋を示す斜視図である。FIG. 6 is a perspective view showing a conventional packaging bag.

【符号の説明】[Explanation of symbols]

1 包装袋 2 表シ−ト 3 裏シ−ト 4 折込シ−ト 5 両側シ−ル 6 底部ヒ−トシ−ル 61 表底シ−ル 62 裏底シ−ル 63 表底シ−ルの中央部 7 有底 8 上部ヒ−トシ−ル 12 切欠部 DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Front sheet 3 Back sheet 4 Folding sheet 5 Both side seal 6 Bottom heat seal 61 Outer bottom seal 62 Back bottom seal 63 Center of outer bottom seal Part 7 bottomed 8 upper heat seal 12 notch

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 内容物を収納する袋体が、表裏シ−トの
間に折込シ−トを挿入し、上記表裏シ−トと折込シ−ト
をヒ−トシ−ルして底部を形成した有底袋であって、電
子レンジによって加熱されたとき上記折込シ−トと表裏
シ−トのシール強度が表裏シ−ト間のシール強度よりも
弱くなるように形成し、該底部を形成する折込シ−トと
表裏シ−ト間のヒ−トシ−ルの一方の幅が狭く形成され
ていることを特徴とする電子レンジ対応包装袋。
1. A bag for storing contents has a bottom part formed by inserting a fold sheet between the front and back sheets and heat sealing the front and back sheets and the fold sheet. The bottomed bag is formed such that when heated by a microwave oven, the sealing strength of the folded sheet and the front and back sheets is lower than the sealing strength between the front and back sheets. A microwave-compatible packaging bag, characterized in that one of the widths of the heat seal between the folded sheet and the front and back sheets is narrow.
【請求項2】 上記底部を形成する幅が狭く形成された
ヒートシールの中央部に外方より切欠部を設けた請求項
1記載の電子レンジ対応包装袋。
2. The packaging bag for a microwave oven according to claim 1, wherein a notch is provided from the outside at the center of the heat seal formed with a narrow width forming the bottom.
JP10355315A 1998-11-30 1998-11-30 Microwave oven-oriented packing bag Pending JP2000168851A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10355315A JP2000168851A (en) 1998-11-30 1998-11-30 Microwave oven-oriented packing bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10355315A JP2000168851A (en) 1998-11-30 1998-11-30 Microwave oven-oriented packing bag

Publications (1)

Publication Number Publication Date
JP2000168851A true JP2000168851A (en) 2000-06-20

Family

ID=18443215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10355315A Pending JP2000168851A (en) 1998-11-30 1998-11-30 Microwave oven-oriented packing bag

Country Status (1)

Country Link
JP (1) JP2000168851A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003048001A1 (en) * 2001-12-07 2003-06-12 Sin Sheng Kuang (M) Sdn Bhd Microwaveable package
JP2004345680A (en) * 2003-05-22 2004-12-09 Toppan Printing Co Ltd Standing pouch with steam venting function and package using the same
US7063228B2 (en) 2001-11-16 2006-06-20 Dai Nippon Printing Co., Ltd. Packaging bag
US8434637B2 (en) 2005-04-04 2013-05-07 Dai Nippon Printing Co., Ltd Packaging bag

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7063228B2 (en) 2001-11-16 2006-06-20 Dai Nippon Printing Co., Ltd. Packaging bag
WO2003048001A1 (en) * 2001-12-07 2003-06-12 Sin Sheng Kuang (M) Sdn Bhd Microwaveable package
CN1325339C (en) * 2001-12-07 2007-07-11 新圣光(马)私人有限公司 Package sheet and bag made therefrom
AU2002258344B2 (en) * 2001-12-07 2008-12-11 Sin Sheng Kuang (M) Sdn Bhd Packaging sheet and package made therefrom
AU2002258344B8 (en) * 2001-12-07 2009-01-29 Sin Sheng Kuang (M) Sdn Bhd Packaging sheet and package made therefrom
JP2004345680A (en) * 2003-05-22 2004-12-09 Toppan Printing Co Ltd Standing pouch with steam venting function and package using the same
US8434637B2 (en) 2005-04-04 2013-05-07 Dai Nippon Printing Co., Ltd Packaging bag

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