JP3851636B2 - Pillow type packaging bag - Google Patents

Pillow type packaging bag Download PDF

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JP3851636B2
JP3851636B2 JP2004065400A JP2004065400A JP3851636B2 JP 3851636 B2 JP3851636 B2 JP 3851636B2 JP 2004065400 A JP2004065400 A JP 2004065400A JP 2004065400 A JP2004065400 A JP 2004065400A JP 3851636 B2 JP3851636 B2 JP 3851636B2
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packaging bag
notch
bonded
heat
bag
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JP2004168431A (en
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慎一 長田
哲浩 山本
秀彦 真崎
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Dai Nippon Printing Co Ltd
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Description

本発明は、液状物、固形物、あるいは、これらの混合物からなる食品等の内容物を包装するための包装体に関し、更に詳しくは、液状物、固形物、あるいは、これらの混合物からなる食品等の内容物を包装体に収納した状態で、電子レンジにより加熱調理できると共に、加熱調理することにより包装体内に発生する蒸気等を逃がし、包装体の破裂、変形、および、破裂による内容物の吹きこぼれを防止することができる包装体に関するものである。   The present invention relates to a package for packaging contents such as a liquid, a solid, or a mixture thereof, and more specifically, a liquid, a solid, or a food including a mixture thereof. The contents of the package can be cooked with a microwave oven, and the steam generated in the package can be released by cooking and the contents of the package are ruptured, deformed, and spilled. It is related with the package which can prevent.

従来より、調理済あるいは半調理済等の食品、たとえば、肉まんやあんまん、シュウマイ、餃子、ハンバーガー、ホットドック、スパゲティー、焼きそば、焼きうどん、ビーフン等の調理済めん類等をプラスチック製の包装袋等の包装体に収納し、食べるに際して電子レンジにより加熱調理する包装食品が市場に出回っている。しかし、このような食品を収納する包装体は、電子レンジで包装体ごと加熱すると、食品から発生する蒸気や内部空気の熱膨張により包装体の内圧があがり、突然に包装体が破袋し、包装体に収納された食品が飛散すると共に、電子レンジ内を汚すといった問題があった。   Traditionally, cooked or semi-cooked foods such as meat buns, anmans, shumai, dumplings, hamburgers, hot dogs, spaghetti, fried noodles, fried noodles, rice noodles, etc. Packaged foods that are stored in the body and cooked with a microwave oven when eating are on the market. However, when a package containing such food is heated together with the package in a microwave oven, the internal pressure of the package rises due to the thermal expansion of steam and internal air generated from the food, and the package suddenly breaks, There was a problem that food stored in the package was scattered and the inside of the microwave oven was soiled.

この問題を解決するために、電子レンジで加熱調理する前に、通常はあらかじめ包装体に尖ったもので孔を開けるなり、包装体の端部をはさみなどで切り取るなりして、包装体の内圧を逃がし包装体が破袋するのを防止していた。しかし、これらの内圧を逃がす方法は結構手間なものであると同時に、加熱調理が開始されて発生した蒸気は直ちに包装体外へ放出され、蒸気による加熱蒸らし効果が低減し食味が落ちる。また、この手間を省くものとして、たとえば、包装体の基材に樹脂系の不織布などを用いたり、また、包装体に弁構造の通気材を取り付けたり、コールドシール剤を用いて密封したりすることが行われている。また、別の解決方法として、一面にポリプロピレンとポリエチレンの混合樹脂からなるフィルムを用い、他面に無延伸ポリプロピレンフィルムを用いて、電子レンジでの加熱調理時に包装袋の内圧が所定の圧力に達した時に容易に開封するようにした電子レンジ用包装袋が開示されている(たとえば、特許文献1参照)。   In order to solve this problem, before cooking with a microwave oven, the package body is usually punched with a sharp object in advance, and the end of the package body is cut off with scissors, etc. To prevent the package from breaking the bag. However, the method of releasing these internal pressures is quite troublesome. At the same time, steam generated when cooking is started is immediately released to the outside of the package, and the steaming effect by steam is reduced and the taste is lowered. In order to save this trouble, for example, a resin-based non-woven fabric is used as the base material of the package body, a valve-structured ventilation material is attached to the package body, and the package body is sealed with a cold sealant. Things have been done. As another solution, a film made of a mixed resin of polypropylene and polyethylene is used on one side, and an unstretched polypropylene film is used on the other side, so that the internal pressure of the packaging bag reaches a predetermined pressure during cooking in a microwave oven. A packaging bag for a microwave oven is disclosed that can be easily opened (see, for example, Patent Document 1).

しかしながら、包装体の基材に不織布などを使用すると密封ができないといった問題があり、また、包装体に通気材を取り付ける方法はコストが高くなるといった問題があり、また、コールドシール剤を用いる方法は完全に密封することが困難であるのみならず、シール強度が弱く輸送中等において自然にシールが剥離してしまうといった問題があり、また、特許文献1で提案されたものは、両面の素材を変えなければならず、取扱面や管理面で煩雑になるといった問題がある。
実公平2−15789号公報
However, if a nonwoven fabric or the like is used for the base material of the package, there is a problem that sealing cannot be performed, and the method of attaching a ventilation material to the package has a problem that the cost is high, and the method using a cold sealant is Not only is it difficult to seal completely, but there is a problem that the seal strength is weak and the seal naturally peels off during transportation, etc. In addition, the one proposed in Patent Document 1 changes the material on both sides. There is a problem that it becomes complicated in terms of handling and management.
Japanese Utility Model Publication No. 2-15789

そこで本発明は、上記問題に鑑みてなされたものであり、その目的とするところは、調理済あるいは半調理済等の食品を完全に密封できると共に、前記食品を包装に収納したままで電子レンジにより加熱調理でき、さらに加熱調理中に発生する蒸気により包装に収納された食品を蒸らす効果を奏しつつ包装内の内部圧力を包装の一部が自動的に開口して逃がし、包装の破裂、変形を防止できる包装を提供することにある。 Accordingly, the present invention has been made in view of the above problems, and the object of the present invention is to completely seal a food such as cooked or semi-cooked food, and to store the food in a packaging bag in an electronic manner. can cooking by oven further by steam generated during cooking relief automatically opening a part of the packaging bag is the internal pressure in the packaging bag while exhibit the cook by steam effect stored in the packaging bag food packaging An object of the present invention is to provide a packaging bag that can prevent the bag from bursting and deforming.

本発明者等は、上記のような問題点を解決すべく種々研究を重ねた結果、請求項1記載の本発明は、内層が熱接着性樹脂層からなる矩形状の包装材を、対向する両端部の前記内層同士を合わせて熱接着して合掌貼りされた背シール部と該背シール部の内縁に連接して張り出して熱接着された張出部を少なくとも1箇所有すると共に前記背シール部に直交する両端を端部熱接着部で熱接着して密封した両側縁に折部を有するピロータイプの包装袋であって、前記張出部の領域内に切目もしくは切欠が形成されていることを特徴とするものである。このように構成することにより、調理済あるいは半調理済等の食品を完全に密封できると共に、前記食品を包装に収納したままで電子レンジにより加熱調理でき、さらに加熱調理中に発生する蒸気により包装に収納された食品を蒸らす効果を奏しつつ、前記張出部が包装の内側に張り出していることにより、その他の熱接着部より速く剥離するために包装内の内部圧力を前記張出部に設けられた切目もしくは切欠より自動的に逃がして破裂を防止することができる。また、前記張出部を前記熱接着部を形成すると同時に形成することができる。 As a result of various studies conducted by the present inventors to solve the above-described problems, the present invention according to claim 1 opposes a rectangular packaging material in which the inner layer is a heat-adhesive resin layer. The back seal part has at least one back seal part bonded to the inner edge of the back seal part and heat-adhered at least one extension part that is bonded to the inner edge of the back seal part by thermally bonding the inner layers at both ends together. A pillow-type packaging bag having folded portions on both side edges that are heat-bonded and sealed at both ends perpendicular to each other, with a cut or notch formed in the region of the overhanging portion. It is characterized by. By configuring in this way, food such as cooked or semi-cooked can be completely sealed, and the food can be cooked with a microwave while being stored in a packaging bag , and further by steam generated during cooking while provide an advantage that cook by steam was housed in the packaging bag food, by the projecting portion is protruded inward in the packaging bag, the internal pressure in the packaging bag to peel faster than other thermal bonding unit said Zhang It can automatically escape from a cut or notch provided in the exit portion to prevent rupture. Further, the overhang portion can be formed simultaneously with the formation of the thermal bonding portion.

また、請求項2記載の本発明は、請求項1記載のピロータイプの包装袋において、前記切目もしくは切欠が未接着部に形成されていることを特徴とするものである。このように構成することにより、ピロータイプ包装袋の内側に張り出した張出部がその他の熱接着部より速く内部圧力により剥離が始まり、剥離が未接着部に到達した時点で内部圧力を逃がすと共に内部圧力が未接着部に集中して張出部を一気に剥離して一層大きく開口するために内部圧力を逃がし易くすることができる。 The present invention according to claim 2 is characterized in that, in the pillow type packaging bag according to claim 1, the cut or notch is formed in an unbonded portion. By configuring in this way, the overhanging portion that protrudes inside the pillow type packaging bag starts to peel off by internal pressure faster than other heat-bonded portions, and when the peeling reaches the unbonded portion, the internal pressure is released. Since the internal pressure is concentrated on the non-bonded portion and the overhanging portion is peeled off at once and the opening is further increased, the internal pressure can be easily released.

また、請求項3記載の本発明は、請求項1、2のいずれかに記載のピロータイプの包装袋において、前記切目もしくは切欠が前記張出部を構成する包装材を貫通して形成されていることを特徴とするものである。 Further, the present invention according to claim 3 is the pillow type packaging bag according to any one of claims 1 and 2, wherein the cut or notch is formed through the packaging material constituting the overhanging portion. It is characterized by being.

また、請求項4記載の本発明は、請求項1、2のいずれかに記載のピロータイプの包装袋において、前記切目もしくは切欠が前記張出部を構成する対向した包装材の一方の包装材に形成されていることを特徴とするものである。このように構成することにより、加熱調理することで高まる包装袋内の内部圧力を所望の方向に逃がすことができ、たとえば、内容物が液状物の場合などに、切目もしくは切欠を設けた側を上側とすることにより加熱調理時の吹きこぼれ等を防止することができる。 Further, the present invention according to claim 4 is the pillow type packaging bag according to any one of claims 1 and 2, wherein one of the facing packaging materials in which the cut or notch constitutes the overhanging portion. It is characterized by being formed. By comprising in this way, the internal pressure in the packaging bag which increases by cooking can be released in a desired direction. For example, when the contents are liquid, the side provided with a cut or notch is provided. By setting it as the upper side, it is possible to prevent spillage and the like during cooking.

本発明の包装袋は、調理済あるいは半調理済等の食品を完全に密封できると共に、前記食品を包装に収納したままで電子レンジにより加熱調理することができると共に、加熱調理中に発生する蒸気により包装に収納された食品を蒸らす効果を奏するものである。また、包装内の内部圧力を包装の一部が自動的に開口して逃がすことにより、包装の破裂、変形を防止することができるといった効果を奏するものである。さらに、包装内の内部圧力を逃がす方向を限定することができ、内容物の吹きこぼれ等を防止することができるといった効果を奏するものである。 The packaging bag of the present invention can completely seal a food such as cooked or semi-cooked food, and can be cooked by a microwave while the food is stored in the packaging bag , and is generated during cooking. It has the effect of steaming the food stored in the packaging bag with steam. Further, by releasing the internal pressure in the packaging bag and partially automatically opening the packaging bag, the rupture of the packaging bag, is intended to achieve the advantage of the ability to prevent deformation. Furthermore, it is possible to limit the direction in which the internal pressure in the packaging bag is released, and to prevent the contents from being blown out.

上記の本発明について、以下に詳述する。
まず、上記の本発明において、内層の熱接着性樹脂層に用いる樹脂としては、密封性、自動包装機適性、易剥離性、とりわけ、耐油性、耐熱性の点からポリプロピレン系樹脂とポリエチレン系樹脂とオレフィン系共重合体ゴムとの混合樹脂が好適である。
The present invention will be described in detail below.
First, in the present invention, the resin used for the inner heat-adhesive resin layer is a polypropylene resin and a polyethylene resin from the viewpoints of hermeticity, suitability for automatic packaging machines, easy peelability, especially oil resistance and heat resistance. A mixed resin of olefin copolymer rubber is preferred.

前記混合樹脂の一組成物であるポリプロピレン系樹脂としては、たとえば、結晶性プロピレンランダム共重合体であって、プロピレンとエチレン、ブテンー1、ペンテンー1、ヘキセンー1、3ーメチルブテンー1、4ーメチルペンテンー1、オクテンー1などのαーオレフィンとのランダム共重合体などが挙げられ、なかでも結晶性プロピレンーエチレンランダム共重合体が好ましい。なお、ランダム共重合体としては、多段重合で得られるホモポリプロピレンとの混合物であっても構わない。   Examples of the polypropylene resin which is one composition of the mixed resin include a crystalline propylene random copolymer, which is propylene and ethylene, butene-1, pentene-1, hexene-1, 3-methylbutene-1, 4-methylpentene. 1, random copolymers with α-olefins such as octene-1, and the like, and crystalline propylene-ethylene random copolymers are particularly preferable. The random copolymer may be a mixture with homopolypropylene obtained by multistage polymerization.

また、前記混合樹脂の一組成物であるポリエチレン系樹脂としては、たとえば、高圧法低密度ポリエチレン、直鎖状低密度ポリエチレン、中密度ポリエチレンおよび高密度ポリエチレン等のいずれのエチレン単独重合体を使用することができる他に、プロピレン、ブテンー1、ペンテンー1、ヘキセンー1、3ーメチルブテンー1、4ーメチルペンテンー1、オクテンー1などのαーオレフィン、または、酢酸ビニルとの結晶性、あるいは、低結晶性ないし非結晶性のランダムもしくはブロック共重合体、あるいは、これらの混合物などを用いることができるが、なかでも高圧法低密度ポリエチレンが好ましい。   Moreover, as a polyethylene-type resin which is one composition of the said mixed resin, any ethylene homopolymers, such as a high pressure method low density polyethylene, a linear low density polyethylene, a medium density polyethylene, and a high density polyethylene, are used, for example. In addition to propylene, butene-1, pentene-1, hexene-1, 3-methylbutene-1, 4-methylpentene-1, octene-1, and other α-olefins, or crystalline with vinyl acetate, low crystallinity or An amorphous random or block copolymer, or a mixture thereof can be used, and among them, a high pressure method low density polyethylene is preferable.

また、前記混合樹脂の一組成物であるオレフィン系共重合体ゴムとしては、たとえば、エチレン、プロピレン、ブテンー1、ヘキセンー1、4ーメチルペンテンー1等のモノオレフィンのうちの2種、または、3種以上のモノオレフィン共重合体ゴム、並びに、上記モノオレフィンの2種とジシクロペンタジエン、1、4ーヘキサジエン、シクロオクタジエン、メチレンノルボルネン、エチリデンノルボルネン等の非共役ジオレフィン、または、ブタジエン、イソプレン等の共役ジオレフィンとの共重合体ゴムを用いることができるが、なかでもエチレンプロピレン共重合体ゴム、エチレンブテン共重合体ゴム、プロピレンブテン共重合体ゴムが好ましい。   Examples of the olefin copolymer rubber that is one composition of the mixed resin include two kinds of monoolefins such as ethylene, propylene, butene-1, hexene-1, 4-methylpentene-1, or the like, or 3 or more types of monoolefin copolymer rubbers, 2 types of the above monoolefins, and non-conjugated diolefins such as dicyclopentadiene, 1,4-hexadiene, cyclooctadiene, methylene norbornene, and ethylidene norbornene, or butadiene and isoprene A copolymer rubber with a conjugated diolefin such as ethylene propylene copolymer rubber, ethylene butene copolymer rubber, and propylene butene copolymer rubber is preferable.

次に、内層のヒートシール性樹脂層は、上記したようにポリプロピレン系樹脂とポリエチレン系樹脂とオレフィン系共重合体ゴムとの混合樹脂からなるものであり、この混合樹脂の各組成物の配合割合は、混合樹脂100重量%に対して、ポリプロピレン系樹脂は45〜65重量%、ポリエチレン系樹脂は35〜55重量%、オレフィン系共重合体ゴムは2〜5重量%の範囲で用いるのが適当である。   Next, the heat sealable resin layer of the inner layer is composed of a mixed resin of a polypropylene resin, a polyethylene resin, and an olefin copolymer rubber as described above, and the blending ratio of each composition of the mixed resin Is suitable to be used in the range of 45 to 65% by weight of polypropylene resin, 35 to 55% by weight of polyethylene resin, and 2 to 5% by weight of olefin copolymer rubber with respect to 100% by weight of the mixed resin. It is.

また、上記混合樹脂を内層の熱接着性樹脂層として単独使用する場合の厚さとしては20〜60μmが適当であり、好ましくは25〜50μmである。また、必要に応じて、前記内層の熱接着性樹脂層の支持体として、ホモポリプロピレンないし結晶性プロピレンランダム共重合体等を用い、前記支持体と前記ポリプロピレン系樹脂とポリエチレン系樹脂とオレフィン系共重合体ゴムとの混合樹脂を共押し出ししたものであってもよく、その場合の前記混合樹脂の厚さと前記支持体の厚さは食品の種類等により適宜選択すればよい。   Moreover, 20-60 micrometers is suitable as a thickness in the case of using the said mixed resin independently as a thermoadhesive resin layer of an inner layer, Preferably it is 25-50 micrometers. If necessary, homopolypropylene or crystalline propylene random copolymer is used as a support for the inner heat-adhesive resin layer, and the support, the polypropylene resin, the polyethylene resin, and the olefin copolymer are used. A mixture resin with a polymer rubber may be coextruded, and the thickness of the mixed resin and the thickness of the support in that case may be appropriately selected depending on the type of food.

また、内層のヒートシール性樹脂層として用いることができる上記混合樹脂以外のものとしては、たとえば、エチレンー酢酸ビニル共重合体系樹脂や変性ポリエチレン,変性ポリプロピレン等の変性ポリオレフィン系樹脂等を挙げることができ、耐油性や耐熱性等を考慮しなくともよい食品の場合には、上記混合樹脂と同等に用いることができる。   Examples of the resin other than the mixed resin that can be used as the heat sealable resin layer of the inner layer include, for example, ethylene-vinyl acetate copolymer resins, modified polyolefin resins such as modified polyethylene and modified polypropylene, and the like. In the case of a food that does not require consideration of oil resistance and heat resistance, it can be used in the same manner as the above mixed resin.

次に、本発明の包装において、外層として使用するフィルムとしては、包装袋を構成する基本素材となることから、機械的、物理的、化学的等において優れた性質を有する合成樹脂を用いることができ、たとえば、ポリエステル系、ポリアミド系、ポリプロピレン系、ポリカーボネート系、ポリアセタール系等の樹脂を用いることができるし、また、セロハン、合成紙なども用いることができる。また、前記外層として使用するフィルムは、該フィルムの内層側に一般的には印刷が施されることが多いために、前記外層として使用するフィルムは印刷適性が求められ、2軸方向に延伸した延伸フィルムが好適である。このフィルムの厚さとしては基本素材としての強度、剛性などについて必要最低限に保持され得る厚さであればよく、コストを考慮すると12〜30μm程度が適当である。また、前記フィルムは、必要に応じてポリ塩化ビニリデンが塗工されたフィルムや酸化珪素、酸化アルミニウム等の無機物の蒸着層が形成されたフィルムとしてバリアー性を有する構成としてもよい。 Next, in the packaging bag of the present invention, as a film used as an outer layer, since it becomes a basic material constituting the packaging bag, a synthetic resin having excellent properties in mechanical, physical, chemical, etc. should be used. For example, resins such as polyester, polyamide, polypropylene, polycarbonate, and polyacetal can be used, and cellophane, synthetic paper, and the like can also be used. In addition, since the film used as the outer layer is often printed on the inner layer side of the film, the film used as the outer layer is required to have printability and stretched in the biaxial direction. A stretched film is preferred. The thickness of the film may be a thickness that can be kept to the minimum necessary with respect to strength, rigidity, etc. as a basic material, and about 12 to 30 μm is appropriate in consideration of cost. Moreover, the said film is good also as a structure which has barrier property as a film in which the vapor deposition layer of inorganic substances, such as a film coated with polyvinylidene chloride as needed, and silicon oxide and aluminum oxide, was formed.

さらに、本発明においては、前記内層と前記外層の間に中間層を設けてもよく、前記中間層は通常前記内層と前記外層だけでは包装袋としての機能を十分に果たすことができない場合等に設けられる。前記機能としては、気体遮断性、機械的強靱性、耐屈曲性、耐突き刺し性、耐衝撃性、耐磨耗性、耐寒性、耐熱性、耐薬品性等であり、包装袋として要求されるこれらの最終的な機能を中間層を設けることで達成するものである。該中間層として用いられる基材としては、たとえば、ポリエチレンテレフタレート、ポリアミド、ポリエチレン、ポリプロピレン等のポリオレフィン、ポリ塩化ビニル、ポリカーボネート、ポリビニルアルコール、エチレンープロピレン共重合体、エチレンー酢酸ビニル共重合体ケン化物等のフィルムあるいはこれらにポリ塩化ビニリデンを塗工したフィルムないしは酸化珪素、酸化アルミニウム等の無機物の蒸着を施したフィルムあるいはポリ塩化ビニリデン等のフィルム、あるいは、紙、セロハン、合成紙、不織布などを用いることができる。また、これら基材の一種ないしそれ以上を組み合わせて使用することができる。尚、上記基材の厚さとしては、包装体として要求される機能を満たすことができればよいのであって、必要に応じて適宜に選ぶことができる。   Further, in the present invention, an intermediate layer may be provided between the inner layer and the outer layer, and the intermediate layer is usually used only when the inner layer and the outer layer cannot sufficiently function as a packaging bag. Provided. The functions include gas barrier properties, mechanical toughness, flex resistance, puncture resistance, impact resistance, wear resistance, cold resistance, heat resistance, chemical resistance, etc., which are required as packaging bags. These final functions are achieved by providing an intermediate layer. Examples of the substrate used as the intermediate layer include polyolefins such as polyethylene terephthalate, polyamide, polyethylene, and polypropylene, polyvinyl chloride, polycarbonate, polyvinyl alcohol, ethylene-propylene copolymer, saponified ethylene-vinyl acetate copolymer, and the like. Films, films coated with polyvinylidene chloride or films deposited with inorganic substances such as silicon oxide and aluminum oxide, films such as polyvinylidene chloride, or paper, cellophane, synthetic paper, non-woven fabric, etc. Can do. One or more of these substrates can be used in combination. It should be noted that the thickness of the base material only needs to satisfy the function required for the package, and can be appropriately selected as necessary.

次に、図面に示す実施例を用いてさらに詳しく説明する。
図1は本発明にかかる包装の第1の実施形態の平面図、図2は図1のXーX線の断面図、図3は図1の加熱調理途中のXーX線の断面図、図4は図1の加熱調理完了時のXーX線の断面図、図5は本発明にかかる包装の第2の実施形態の平面図、図6は図5のYーY線の断面図、図7は本発明にかかる包装の第3の実施形態の平面図、図8は図7のM−M線の断面図、図9は本発明にかかる包装の1実施例を示す平面図であり、図中の1,1’,1”は包装袋、2,2’は熱接着部、3,3’,3”は張出部、4,4’,4”は切欠、5は背シール部、6は背部、40は剥離部、50は積層体、51は内層、53は外層をそれぞれ示す。
Next, the present invention will be described in more detail using an embodiment shown in the drawings.
1 is a plan view of a first embodiment of a packaging bag according to the present invention, FIG. 2 is a cross-sectional view taken along line XX in FIG. 1, and FIG. 3 is a cross-sectional view taken along line XX in FIG. 4 is a cross-sectional view taken along line XX when cooking is completed in FIG. 1, FIG. 5 is a plan view of a second embodiment of the packaging bag according to the present invention, and FIG. 6 is taken along line YY in FIG. FIG. 7 is a plan view of a third embodiment of the packaging bag according to the present invention, FIG. 8 is a sectional view taken along line MM in FIG. 7, and FIG. 9 is an example of the packaging bag according to the present invention. 1, 1 ′, 1 ″ are packaging bags, 2, 2 ′ are thermal bonding portions, 3, 3 ′, 3 ″ are overhanging portions, 4, 4 ′, 4 ″ are notches 5 is a back seal part, 6 is a back part, 40 is a peeling part, 50 is a laminated body, 51 is an inner layer, 53 is an outer layer.

図1は本発明にかかる包装袋の第1の実施形態の平面図、図2は図1のXーX線の断面図であって、包装袋1は外層53と易剥離性を有する熱接着性樹脂層である内層51とからなる矩形状の積層体50を前記内層51同士が対向するように重ね合わせて4端縁辺を熱接着することにより前記4端縁辺に熱接着部2を有する四方シールタイプの包装袋であって、前記熱接着部2のうちの一端縁辺の略中央部に包装袋1の袋内側に熱接着された略半円形状の張出部3が形成されると共に、前記張出部3の領域内を含むように略円形状の切欠4が前記積層体50の一方に設けられたものである。   FIG. 1 is a plan view of a packaging bag according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line XX of FIG. 1, and the packaging bag 1 is thermally bonded to the outer layer 53 with easy peeling. A rectangular laminated body 50 composed of an inner layer 51 that is a conductive resin layer is superposed so that the inner layers 51 face each other, and the four end edges are thermally bonded to each other, so that the four sides have the thermal bonding portion 2 on the four end edges. In the seal type packaging bag, a substantially semi-circular overhanging portion 3 that is thermally bonded to the inside of the bag of the packaging bag 1 is formed at a substantially central portion of one edge of the thermal bonding portion 2; A substantially circular notch 4 is provided on one side of the laminate 50 so as to include the inside of the overhang portion 3.

また、図示はしないが包装袋1の中にはビーフン、焼きそば、焼きうどん等の調理済めん類、肉まん、あんまん、シュウマイ、餃子、ハンバーガー、ホットドックなどの食品が収納されていて、食品を食べるに際してそのまま電子レンジで所定時間加熱調理するタイプのものである。   In addition, although not shown, the packaging bag 1 contains cooked noodles such as rice noodles, fried noodles, and grilled udon, meat buns, anpan, shumai, dumplings, hamburgers, hot dogs, and the like. It is of the type that is cooked for a predetermined time in a microwave oven.

図3は図1の加熱調理途中のXーX線の断面図であって、ビーフン、焼きそば、焼きうどん等の調理済めん類、肉まん、あんまん、シュウマイ、餃子、ハンバーガー、ホットドックなどの食品が収納された包装袋1を電子レンジに入れて加熱調理すると、食品中から発生する蒸気や包装袋内の空気が熱膨張して内部圧力Fが高まり包装袋1はパンパンに膨れた状態になる一方で、内部圧力Fにより包装袋1の一端縁辺の略中央部に設けた略半円形状の張出部3の内層51,51間ないし内層51で、層間剥離ないし凝集破壊による剥離40が包装袋1の内部側から生じ始める。最終的には図4に示すように、包装袋1は包装袋1の一端縁辺の略中央部に設けた略半円形状の張出部3に生じた剥離40が切欠4に達して内部圧力Fを逃がし、包装袋1の破袋が防止される。なお、前記張出部3に生じた剥離40が前記切欠4に達するまでの間、包装袋1に収納された食品を蒸らすことができるために、より良い食味を得ることができると共に、内部圧力Fを逃がす方向を限定することができる。図1においては、略円形状の切欠4を設けた張出部3は一端縁辺に1箇所設けたものを示したが、他の端縁辺にも設けてもよいし、また、一端縁辺に複数箇所設けてもよい。   FIG. 3 is a cross-sectional view taken along the line XX in FIG. 1, and contains cooked noodles such as rice noodles, fried noodles, and grilled udon, foods such as meat buns, anpan, shumai, dumplings, hamburgers, and hot dogs. When the packaging bag 1 is put in a microwave oven and cooked, the steam generated from the food and the air in the packaging bag are thermally expanded, the internal pressure F is increased, and the packaging bag 1 is in a state of being swollen, Due to the internal pressure F, peeling 40 due to delamination or cohesive failure occurs between the inner layers 51 and 51 of the substantially semicircular overhanging portion 3 provided in the substantially central portion of one edge of the packaging bag 1 or from the inner layer 51. It begins to arise from the inside. Finally, as shown in FIG. 4, the packaging bag 1 has a peeling 40 formed in a substantially semicircular protruding portion 3 provided at a substantially central portion of one end edge of the packaging bag 1, and reaches the notch 4. F is escaped and the packaging bag 1 is prevented from being broken. In addition, since the food stored in the packaging bag 1 can be steamed until the peeling 40 generated in the overhanging portion 3 reaches the notch 4, a better taste can be obtained and the internal pressure can be increased. The direction in which F is released can be limited. In FIG. 1, the protruding portion 3 provided with the substantially circular notch 4 is provided at one end edge, but it may be provided at the other end edge, or a plurality of protrusions 3 may be provided at one end edge. A place may be provided.

図5は本発明にかかる包装の第2の実施形態の平面図、図6は図5のYーY線の断面図であって、包装袋1’は外層53と易剥離性を有する熱接着性樹脂層である内層51とからなる矩形状の積層体50を、対向する両端部の内層51を合わせて熱接着することにより合掌貼りされた背シール部(図示せず)を有する筒状体となし、前記背シール部(図示せず)を前記背シール部(図示せず)の筒状体側の端辺で折って前記筒状体に密着させてのちに、包装袋としたときに前記背シール部(図示せず)が包装袋の略中央に位置するように前記筒状体の両端の開口部を熱接着して両端に熱接着部2’,2’を備えた形状に製袋されたピロータイプの包装袋の折り返し部の一方の略中央部に包装袋1’の袋内側に熱接着された略半円形状の張出部3’が形成されると共に、前記張出部3’の領域内に略円形状の切欠4’が前記積層体50の一方に設けられたものである。このように構成することにより、第1の実施形態で説明した効果と同じ効果を得ることができる。図5においては、略円形状の切欠4’を設けた張出部3’は包装袋1’の折り返し部の一方の略中央部に1箇所設けたものを示したが、他方の折り返し部にも設けてもよいし、前記一方の折り返し部に複数箇所設けてもよい。また、第1の実施形態で示したように、包装袋1’の両端の熱接着部2’,2’に設けてもよい。 FIG. 5 is a plan view of a second embodiment of the packaging bag according to the present invention, FIG. 6 is a cross-sectional view taken along the line Y-Y in FIG. 5, and the packaging bag 1 ′ is a heat having easy peelability from the outer layer 53. Tubular shape having a back seal portion (not shown) bonded to the rectangular laminated body 50 composed of the inner layer 51 as an adhesive resin layer by thermally bonding the inner layers 51 at both opposing ends together. When the back seal part (not shown) is folded at the end of the back seal part (not shown) on the cylindrical body side and is brought into close contact with the cylindrical body, and then used as a packaging bag The opening part at both ends of the cylindrical body is thermally bonded so that the back seal part (not shown) is positioned at the approximate center of the packaging bag, and the heat sealing parts 2 ′ and 2 ′ are provided at both ends. A substantially semi-circular overhanging portion 3 'thermally bonded to the inner side of the packaging bag 1' at one substantially central portion of the folded portion of the wrapped pillow type packaging bag. While it is formed, in which is provided on one of the laminate 50 'substantially circular cutouts 4 in the region of' the projecting portion 3. By configuring in this way, the same effect as described in the first embodiment can be obtained. In FIG. 5, the overhang portion 3 ′ provided with the substantially circular notch 4 ′ is provided at one substantially central portion of the folded portion of the packaging bag 1 ′. Or may be provided at a plurality of locations on the one folded portion. Further, as shown in the first embodiment, the heat-bonding portions 2 ′ and 2 ′ at both ends of the packaging bag 1 ′ may be provided.

図7は本発明にかかる包装の第3の実施形態の平面図、図8は図7のM−M線の断面図であって、包装袋1”は外層53と易剥離性を有する熱接着性樹脂層である内層51とからなる矩形状の積層体50を、対向する両端部の内層51を合わせて熱接着することにより合掌貼りされた背シール部5となし、該背シール部5の略中央部に該背シール部5に連接して前記内層51同士を熱接着した略台形状の張出部3”を形成すると共に、前記張出部3”の領域内に略台形状の切欠4”を有する筒状体となし、前記張出部3”の先端近傍の筒状体側で前記背シール部5と平行に折って前記背シール部5と前記張出部3”とからなる背部6を前記筒状体に密着させると共に、前記背部6が包装袋としたときに包装袋の略中央に位置するように前記筒状体の両端の開口部を熱接着して両端に熱接着部2’,2’を備えた形状に製袋されたピロータイプの包装袋である。このように構成することにより、第1、および、第2の実施形態で説明した効果と同じ効果を得ることができる。また、この張出部3”は前記背シール部5の略中央部に1箇所設けたものを示したが、前記背シール部5に複数箇所設けてもよい。 FIG. 7 is a plan view of a third embodiment of the packaging bag according to the present invention, FIG. 8 is a cross-sectional view taken along the line MM of FIG. 7, and the packaging bag 1 ″ is an easily peelable heat from the outer layer 53. A rectangular laminated body 50 composed of an inner layer 51 which is an adhesive resin layer is formed into a back seal portion 5 which is bonded to the inner layer 51 by heat-bonding the inner layers 51 at both opposing ends together. The back seal portion 5 A substantially trapezoidal overhanging portion 3 ″ connected to the back seal portion 5 and thermally bonded to each other is formed at a substantially central portion of the inner wall 51 and substantially trapezoidal in the region of the overhanging portion 3 ″. A cylindrical body having a notch 4 ″ is formed, and the back seal part 5 and the overhanging part 3 ″ are formed by being folded in parallel with the back seal part 5 on the side of the tubular body near the tip of the overhanging part 3 ″. The back part 6 is brought into close contact with the cylindrical body, and the back part 6 is positioned at the approximate center of the packaging bag when the back part 6 is used as a packaging bag. Heat-bonded portions at both end openings of both ends of the Jo body by thermal bonding 2 ', 2' is a pillow type packaging bag is Seibukuro in shape with a. By comprising in this way, the same effect as the effect demonstrated by 1st and 2nd embodiment can be acquired. Moreover, although this overhang | projection part 3 '' showed what was provided in the approximate center part of the said back seal | sticker part 5 in one place, you may provide in the said back seal | sticker part 5 in multiple places.

また、第1〜第2の実施形態で説明してきた包装袋においては、張出部に設けた切欠がすべて一方の積層体に設けられたものであったが、これにこだわることはなく、両方の積層体に切欠を設けてもよい。また、第3の実施形態で説明した切欠は、図8で明らかなように張出部を形成する積層体を貫通するように設けたものであるが、これについても張出部を形成する積層体のいずれか一方の積層体に設けてもよい。   Moreover, in the packaging bag demonstrated in the 1st-2nd embodiment, all the notches provided in the overhang | projection part were provided in one laminated body, However, it does not stick to this, both A cutout may be provided in the laminate. In addition, the notch described in the third embodiment is provided so as to penetrate the laminated body forming the overhanging portion as is apparent in FIG. You may provide in any one laminated body of a body.

また、切欠についても略円形状、略台形状に限ることはなく、たとえば、略半円形状、あるいは、三角形状に代表される多角形状等であってもよいし、張出部についても略半円形状、略台形状にかぎることはなく、たとえば、略楕円形状、あるいは、三角形状に代表される多角形状等であってもよい。また、張出部に設けられる切欠の個数についても、1個に限ることなく、複数個であっても構わない。   Further, the notch is not limited to a substantially circular shape or a substantially trapezoidal shape, and may be, for example, a substantially semicircular shape, a polygonal shape represented by a triangular shape, or the like, and the overhanging portion is also substantially half The shape is not limited to a circular shape or a substantially trapezoidal shape, and may be, for example, a substantially elliptical shape or a polygonal shape represented by a triangular shape. Further, the number of cutouts provided in the overhanging portion is not limited to one and may be plural.

また、説明はしなかったが、張出部に設けられる未接着部の形状、あるいは、前記未接着部に形成される切欠の形状についても色々な形状をとることができ、たとえば、略円形状、略半円形状、あるいは、三角形状に代表される多角形状等をとることができ、また、熱接着された張出部や張出部に形成された未接着部に形成される切刃の形状についても色々な形状をとることができ、たとえば、I字形状、半円形状、舟型形状、十字形状等をとることができるし、その個数についても、1個に限ることはなく、複数個であっても構わない。よって、図示等を行わなかったが、張出部内に設けられる未接着部の形状より小さい切欠、切刃とし、未接着部の外側周縁等を残した形状としたものも当然含まれるものである。   Although not described, the shape of the unbonded portion provided in the overhanging portion or the shape of the notch formed in the unbonded portion can take various shapes, for example, a substantially circular shape. It is possible to take a semi-circular shape, a polygonal shape represented by a triangular shape, etc., and a cutting edge formed on a heat-bonded overhanging portion or an unbonded portion formed in the overhanging portion. Various shapes can be adopted, for example, an I shape, a semicircular shape, a boat shape, a cross shape, etc., and the number is not limited to one. It may be individual. Therefore, although not shown in the drawings, it is natural to include notches and cutting blades smaller than the shape of the non-adhered portion provided in the overhanging portion, leaving the outer peripheral edge of the non-adhered portion, etc. .

上記の本発明について、以下に実施例をあげて、さらに詳しく説明する。   The present invention will be described in more detail with reference to the following examples.

15μmの2軸延伸ポリアミドフィルムと結晶性プロピレンーエチレンランダム共重合体/高圧法低密度ポリエチレン/エチレンプロピレンゴムの58/40/2の重量%の割合の混合樹脂からなる50μmの無延伸フィルムとを2液反応型ポリウレタン系接着剤を用いて周知のドライラミネーション法で貼り合わせた積層体を作製し、該積層体の前記無延伸フィルム同士を重ね合わせ、図9に示すように短辺Yが130mm、長辺Tが180mmの矩形状に裁断すると共に、短辺Yの1/2線上で短辺の端縁辺からの寸法CYが13.5mmの位置Aを中心とする半径R1が3.5mmの円形状に重ね合わせた一方の積層体を打ち抜いて切欠を形成し、その後に両長辺を両長辺の端縁辺からシール巾STが8mm、円形状の切欠を形成した側の短辺の端縁辺からシール巾SYが10mmで熱接着部を形成し、さらに位置Aを中心とする半径R2が8.5mmの略半円状に前記シール巾SYの熱接着部と連接するように熱接着して前記シール巾SYの熱接着部の内側辺よりの最大張り出し寸法Hが12mmとなるように張出部を形成し、一辺が開口した三方シール袋を作製した。この三方シール袋にミートボール(85g/袋)を充填し、袋内を真空にして後に開口部を熱接着したものを50袋作製した。これを電子レンジ(定格高周波出力500W)で90秒加熱を行った。50袋共に加熱を開始して30〜50秒後に内部圧力の高まりにより、いずれも張出部が剥離して円形状の切欠から内部圧力が逃げて破袋することなく加熱調理でき、また、ミートボールの食味も損なわれることがなかった。   15 μm biaxially stretched polyamide film and crystalline propylene-ethylene random copolymer / high pressure method low density polyethylene / ethylene propylene rubber in a proportion of 58/40/2 wt% of a mixed resin of 50 μm A laminated body bonded by a known dry lamination method using a two-component reactive polyurethane adhesive is prepared, and the unstretched films of the laminated body are overlapped with each other, and the short side Y is 130 mm as shown in FIG. In addition, the long side T is cut into a rectangular shape having a length of 180 mm, and the radius R1 centered on the position A where the dimension CY from the edge of the short side on the 1/2 line of the short side Y is 13.5 mm is 3.5 mm. One of the laminates stacked in a circular shape is punched to form a notch, and then both long sides are sealed from the end edges of both long sides, the seal width ST is 8 mm, and the side on which the circular notch is formed A thermal bonding part is formed with a seal width SY of 10 mm from the edge of the short side of the side, and further connected to the thermal bonding part of the seal width SY in a substantially semicircular shape with a radius R2 centered on the position A of 8.5 mm. Thus, a three-sided seal bag having one side opened was prepared by forming the overhang part so that the maximum overhang dimension H from the inner side of the heat-bonded part having the seal width SY was 12 mm. This three-side sealed bag was filled with meatballs (85 g / bag), and the bag was evacuated, and then 50 bags were made by thermally bonding the openings. This was heated for 90 seconds in a microwave oven (rated high-frequency output 500 W). The heating of both 50 bags starts 30-30 seconds after the internal pressure increases, and the overhanging part peels off and the internal pressure escapes from the circular notch and can be cooked without breaking the bag. The taste of the balls was not impaired.

15μmの2軸延伸ポリアミドフィルムと結晶性プロピレンーエチレンランダム共重合体/高圧法低密度ポリエチレン/エチレンプロピレンゴムの58/40/2の重量%の割合の混合樹脂からなる50μmの無延伸フィルムとを2液反応型ポリウレタン系接着剤を用いて周知のドライラミネーション法で貼り合わせた積層体を作製し、該積層体の前記無延伸フィルム同士を重ね合わせ、図9に示すように短辺Yが115mm、長辺Tが170mmの矩形状に裁断すると共に、短辺Yの1/2線上で短辺の端縁辺からの寸法CYが13.5mmの位置Aを中心とする半径R1が3.5mmの円形状に重ね合わせた一方の積層体を打ち抜いて切欠を形成し、その後に両長辺を両長辺の端縁辺からシール巾STが8mm、円形状の切欠を形成した側の短辺の端縁辺からシール巾SYが10mmで熱接着部を形成し、さらに位置Aを中心とする半径R2が8.5mmの略半円状に前記シール巾SYの熱接着部と連接するように熱接着して前記シール巾SYの熱接着部の内側辺よりの最大張り出し寸法Hが12mmとなるように張出部を形成し、一辺が開口した三方シール袋を作製した。この三方シール袋にハンバーグ(75g/袋)を充填し、袋内を真空にして後に開口部を熱接着したものを50袋作製した。これを電子レンジ(定格高周波出力500W)で90秒加熱を行った。50袋共に加熱を開始して30〜50秒後に内部圧力の高まりにより、いずれも張出部が剥離して円形状の切欠から内部圧力が逃げて破袋することなく加熱調理でき、また、ハンバーグの食味も損なわれることがなかった。   15 μm biaxially stretched polyamide film and crystalline propylene-ethylene random copolymer / high pressure method low density polyethylene / ethylene propylene rubber in a proportion of 58/40/2 wt% of a mixed resin of 50 μm A laminate laminated by a known dry lamination method using a two-component reactive polyurethane adhesive is prepared, and the unstretched films of the laminate are overlapped, and the short side Y is 115 mm as shown in FIG. The long side T is cut into a rectangular shape having a length of 170 mm, and the radius R1 centered on the position A where the dimension CY from the edge of the short side on the 1/2 line of the short side Y is 13.5 mm is 3.5 mm. One of the laminates stacked in a circular shape is punched to form a notch, and then both long sides are sealed from the end edges of both long sides, the seal width ST is 8 mm, and the side on which the circular notch is formed A thermal bonding part is formed with a seal width SY of 10 mm from the edge of the short side of the side, and further connected to the thermal bonding part of the seal width SY in a substantially semicircular shape with a radius R2 centered on the position A of 8.5 mm. Thus, a three-sided seal bag having one side opened was prepared by forming the overhang part so that the maximum overhang dimension H from the inner side of the heat-bonded part having the seal width SY was 12 mm. This three-sided seal bag was filled with hamburger (75 g / bag), and the bag was evacuated and the opening was thermally bonded to prepare 50 bags. This was heated for 90 seconds in a microwave oven (rated high-frequency output 500 W). The heating of both 50 bags starts 30-30 seconds after the internal pressure increases, so that the overhanging part peels off and the internal pressure escapes from the circular notch and can be cooked without breaking the bag. The taste of was not impaired.

本発明にかかる包装の第1の実施形態の平面図である。It is a top view of a 1st embodiment of a packaging bag concerning the present invention. 図1のXーX線の断面図である。It is sectional drawing of the XX line of FIG. 図1の加熱調理途中のXーX線の断面図である。It is sectional drawing of the XX line in the middle of the heat cooking of FIG. 図1の加熱調理完了時のXーX線の断面図である。It is sectional drawing of the XX line at the time of the completion of the heating cooking of FIG. 本発明にかかる包装の第2の実施形態の平面図である。It is a top view of 2nd Embodiment of the packaging bag concerning this invention. 図5のYーY線の断面図である。It is sectional drawing of the YY line of FIG. 本発明にかかる包装の第3の実施形態の平面図である。It is a top view of 3rd Embodiment of the packaging bag concerning this invention. 図7のM−M線の断面図である。It is sectional drawing of the MM line | wire of FIG. 本発明にかかる包装の1実施例を示す平面図である。It is a top view which shows one Example of the packaging bag concerning this invention.

符号の説明Explanation of symbols

1,1’,1” 包装袋
2,2’ 熱接着部
3,3’,3” 張出部
4,4’,4” 切欠
5 背シール部
6 背部
40 剥離部
50 積層体
51 内層
53 外層
1, 1 ', 1 "packaging bag 2, 2' heat bonding part 3, 3 ', 3" projecting part 4, 4', 4 "notch 5 back seal part 6 back part 40 peeling part 50 laminate 51 inner layer 53 outer layer

Claims (4)

内層(51)に熱接着性樹脂層からなる矩形状の包装材を筒状体にして対向する両端部の前記内層(51)同士を重ね合わせて背部(6)とし、その重ね合わせた背部(6)の先端側を全辺に亘って熱接着して合掌貼りされた背シール部(5)と、前記背シール部(5)に直交する両端の開口部を熱接着して密封した熱接着部(2’,2’)とを有するピロータイプの包装袋(1)であって、前記背部(6)の領域内に前記背シール部(5)の内側周縁部に連接して前記包装袋(1)の内側に張り出して熱接着された前記背シール部(5)及び前記熱接着部(2’,2’)と略同じ強さの接着強度を有する張出部(3”)を少なくとも1箇所形成し、前記張出部(3”)の領域内に加熱時における内部圧力を逃がすための切目もしくは切欠(4”)が形成されていることを特徴とするピロータイプの包装袋。 A rectangular packaging material made of a heat-adhesive resin layer is formed into a cylindrical body on the inner layer (51), and the inner layers (51) at opposite ends are overlapped to form a back portion (6). 6) The back seal part (5), which is bonded to the front end side by thermal bonding over the entire side, and the thermal bonding in which the openings at both ends perpendicular to the back seal part (5) are bonded by heat sealing. A pillow type packaging bag (1) having a portion (2 ', 2'), wherein the packaging bag is connected to the inner peripheral edge of the back seal portion (5) in the region of the back portion (6). (1) at least the back seal portion (5) and the heat-bonded portion (2 ′, 2 ′) that are thermally bonded to each other and have a protruding portion (3 ″) having an adhesive strength that is substantially the same as that of the heat-bonded portion (2 ′, 2 ′). A cut or notch (4 ") for forming internal pressure and releasing internal pressure during heating in the region of the overhang (3 "). A pillow-type packaging bag characterized in that is formed. 前記張出部(3”)内に未接着部が形成され、該未接着部に前記切目もしくは切欠(4”)が形成されていることを特徴とする請求項1記載のピロータイプの包装袋。 The pillow type packaging bag according to claim 1 , wherein an unbonded portion is formed in the overhang portion (3 "), and the cut or notch (4") is formed in the unbonded portion. . 前記切目もしくは切欠(4”)が前記張出部(3”)を構成する包装材を貫通して形成されていることを特徴とする請求項1、2のいずれかに記載のピロータイプの包装袋。 The pillow-type packaging according to any one of claims 1 and 2, wherein the cut or notch (4 ") is formed so as to penetrate a packaging material constituting the overhanging portion (3"). bag. 前記切目もしくは切欠(4”)が前記張出部(3”)を構成する対向した包装材の一方の包装材に形成されていることを特徴とする請求項1、2のいずれかに記載のピロータイプの包装袋。 The said cut | notch or notch (4 ") is formed in one packaging material of the opposing packaging material which comprises the said overhang | projection part (3") , The one of Claim 1 or 2 characterized by the above-mentioned. Pillow type packaging bag.
JP2004065400A 1997-11-19 2004-03-09 Pillow type packaging bag Expired - Fee Related JP3851636B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004065400A JP3851636B2 (en) 1997-11-19 2004-03-09 Pillow type packaging bag

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP33499797 1997-11-19
JP2004065400A JP3851636B2 (en) 1997-11-19 2004-03-09 Pillow type packaging bag

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP28761898A Division JP3872603B2 (en) 1997-11-19 1998-10-09 Packaging bag

Publications (2)

Publication Number Publication Date
JP2004168431A JP2004168431A (en) 2004-06-17
JP3851636B2 true JP3851636B2 (en) 2006-11-29

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ID=32715371

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004065400A Expired - Fee Related JP3851636B2 (en) 1997-11-19 2004-03-09 Pillow type packaging bag

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