JP5747523B2 - Packaging bag - Google Patents

Packaging bag Download PDF

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JP5747523B2
JP5747523B2 JP2011014768A JP2011014768A JP5747523B2 JP 5747523 B2 JP5747523 B2 JP 5747523B2 JP 2011014768 A JP2011014768 A JP 2011014768A JP 2011014768 A JP2011014768 A JP 2011014768A JP 5747523 B2 JP5747523 B2 JP 5747523B2
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thermal bonding
edge thermal
seal
packaging bag
edge
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JP2012153406A (en
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長田 慎一
慎一 長田
反保 雅博
雅博 反保
浜田 剛孝
剛孝 浜田
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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本発明は、液体、粘体あるいは液体、粘体と固体とが混在する内容物を密封包装するために用いられ、電子レンジで加熱するときに破裂を起こさず、速やかに蒸気が袋外に排出され、自動的に内圧を低下させ、内容物が噴き零れることなく、安全に加熱調理できる電子レンジ用途に適した包装袋に関するものである。   The present invention is used for hermetically wrapping liquid, mucus or liquid, a mixture of mucus and solid, and does not rupture when heated in a microwave oven, and steam is quickly discharged out of the bag, The present invention relates to a packaging bag suitable for a microwave oven application that can be safely cooked without automatically reducing the internal pressure and spilling the contents.

従来、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に収納して、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。また、調理済あるいは半調理済の液体、粘体あるいは液体と固体とが混在する内容物、例えば、カレー、シチュー、スープ等の調理済食品をプラスチック製の包装袋に収納して、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も多く市場に出回っている。最近、このような食品を収納する包装袋には、電子レンジで包装袋ごと加熱する際、食品から発生する蒸気や内部空気の熱膨張により包装袋内部の内圧が上昇して包装袋が破袋することのないように包装袋に蒸気抜き手段が形成され使用者に利便性を与える包装袋が多く使われている。このような包装袋は蒸気抜き手段が形成されているので電子レンジで加熱する場合に袋に蒸気抜き穴を開けたり、包装袋の隅部を一部切取ったりする手間がなく使用者にとって便利なものである。   Traditionally, cooked or semi-cooked foods, such as meat buns, anmans, shumai, dumplings, hamburgers, hot dogs, spaghetti, fried noodles, fried noodles, rice noodles, etc. are stored in plastic packaging bags. Packaged foods that are cooked in a microwave oven when eating are on the market. In addition, cooked or semi-cooked liquid, mucus or mixed contents of liquid and solid, for example, cooked foods such as curry, stew, soup, etc. are stored in plastic packaging bags and eaten in a microwave oven There are many packaged foods that are cooked by cooking. Recently, in packaging bags that store such foods, when the whole packaging bag is heated in a microwave oven, the internal pressure inside the packaging bag rises due to the thermal expansion of steam and internal air generated from the food, and the packaging bag breaks. In order to prevent this, a packaging bag is formed in the packaging bag so that convenience is provided to the user. Since such a packaging bag is provided with a vapor venting means, it is convenient for the user without the need to open a vapor vent hole in the bag or to cut off some corners of the packaging bag when heating in a microwave oven. It is a thing.

ところが、包装袋を三方シールタイプ袋、四方シールタイプ袋、ピロータイプ袋等の平袋にした場合、液体が少ない固形物を主とする食品を充填した場合には問題にならないが、例えば、カレー、シチュー、スープ等の液体が多い食品を充填した場合には、電子レンジ加熱により蒸気抜き手段形成部にて袋内と袋外とが連通した際に、その蒸通口より内容物が噴き零れ電子レンジ内を汚したり、手指等に火傷する等の問題がある。   However, when the packaging bag is a flat bag such as a three-side seal type bag, a four-side seal type bag, or a pillow type bag, there is no problem if the food is mainly filled with a solid material with little liquid. When foods with a lot of liquid such as stew, soup, etc. are filled, when the inside of the bag communicates with the outside of the bag through the steam release means forming part by microwave heating, the contents spill out from the steaming port. There are problems such as fouling the inside of the microwave and burning fingers.

上記問題を解決するために平袋の場合には、折線を介して背面板、側面板、正面板、側面板が連接され、上部に天面板、下部に底面板を有する六面体の包装箱の中に加熱により上昇する内部蒸気圧が自動的開口によって通過する通気孔構造部を上部に有する電子レンジ用パウチを収納した包装箱が知られている(例えば、特許文献1参照)。この包装箱は、電子レンジ加熱に際し、略中央部上辺寄りの位置の正面板を横断するジッパー部より横断方向に引裂き開封し、ジッパー部に連続する側面板切断予定線を切断し、水平に連続する背面板切断予定線、第二折り曲げ線で折り曲げることにより、包装箱上部を蓋体として仰開型に開放し、電子レンジ用パウチの通気孔側を高くすることにより噴き零れを防止している。
また、一辺に蒸気抜き予定部が形成された袋を電子レンジ内に立て置き状態で載置する電子レンジ用包装体であって、前記袋の片面に板状部材が貼着されており、該板状部材は、これを折曲して組み立てることで、前記蒸気抜き予定部を上にして前記袋を立て置き状態で載置する衝立具を構成する電子レンジ用包装体が知られている(例えば、特許文献2参照)。
しかしながら、特許文献1の場合、別途に包装箱が必要となり、特許文献2の場合、別部材として衝立具が必要となり、コストアップになるという問題がある。また、包装箱や衝立具を組み立てる必要があり、使用者には手間がかかるという問題がある。
In order to solve the above problem, in the case of a flat bag, a back plate, a side plate, a front plate, and a side plate are connected via a fold line, and inside a hexahedron packaging box having a top plate at the top and a bottom plate at the bottom. There is known a packaging box containing a microwave oven pouch having an air vent structure portion on the inside through which an internal vapor pressure rising by heating passes through an automatic opening (see, for example, Patent Document 1). When the microwave oven is heated, the packaging box is torn open in the transverse direction from the zipper part that crosses the front plate at a position near the upper side of the central part, cuts the planned side plate cutting line that continues to the zipper part, and continues horizontally By folding the back plate cutting planned line and the second folding line, the upper part of the packaging box is opened as a lid, and the air vent side of the microwave oven pouch is raised to prevent spilling. .
Further, the microwave oven packaging body is placed in a standing state in a microwave oven in a bag having a portion to be vented on one side, and a plate-like member is attached to one side of the bag, A plate-shaped member is assembled by bending the plate-like member so as to constitute a screen device for placing the bag in a standing state with the planned steam release portion facing upward ( For example, see Patent Document 2).
However, Patent Document 1 requires a separate packaging box, and Patent Document 2 requires a screen as a separate member, which increases costs. Moreover, it is necessary to assemble a packaging box and a screen, and there is a problem that it takes time for the user.

特許第4522782号Patent No. 4522778 特開2003−292061号公報JP 2003-292061 A

そこで本発明は、上記問題を解決すべくなされたものであり、その目的とするところは包装箱や衝立具を使用することなく、平袋であっても内容物が噴き零れることなく電子レンジ加熱可能な包装袋を提供することにある。   Accordingly, the present invention has been made to solve the above-mentioned problems, and the object of the present invention is to use a microwave oven without using a packaging box or a screen, and without spilling the contents even in a flat bag. It is to provide possible packaging bags.

本発明は、上記課題を達成するために、請求項1記載の本発明は、上下および左右の4辺からなり、少なくとも3辺の端縁に端縁熱接着部が形成され、前記端縁熱接着部のいずれかが主端縁熱接着部とされ、前記主端縁熱接着部に連接または近接して蒸気抜き手段を備えた蒸気抜き手段形成部が形成された包装袋であって、前記主端縁熱接着部が形成された1辺に隣接する上下の2辺または左右の2辺の端縁に端縁熱接着部が形成され、前記主端縁熱接着部から該主端縁熱接着部に隣接する上下の2辺または左右の2辺に形成された前記端縁熱接着部まで相互に拡開して延びる2つの斜めシール部が形成されていることを特徴とする包装袋である。 In order to achieve the above object, the present invention according to claim 1 is composed of four sides, upper and lower, and left and right sides, and an edge thermal bonding portion is formed on an edge of at least three sides. either the adhesive portion is a main edge heat seal portion, a packaging bag vapor release means forming part provided with a venting means connected with or close to that formed on the main edge heat seal portion, the An edge thermal bonding portion is formed on the edge of two upper and lower sides adjacent to one side where the main edge thermal bonding portion is formed, or two left and right sides, and the main edge thermal bonding portion is formed from the main edge thermal bonding portion. in the packaging bag, characterized in that two oblique seal portion extending diverging each other until the edge thermal bonding portion formed in the two sides or the right and left two sides of the upper and lower adjacent to the bonding portion is formed is there.

また、請求項2記載の本発明は、請求項1記載の包装袋において、前記斜めシール部が前記蒸気抜き手段形成部に連接して形成されていることを特徴とするものである。   According to a second aspect of the present invention, in the packaging bag according to the first aspect, the oblique seal portion is formed so as to be connected to the vapor venting means forming portion.

また、請求項3記載の本発明は、請求項1または2に記載の包装袋において、前記斜めシール部が、前記主端縁熱接着部および該主端縁熱接着部と隣接する前記端縁熱接着部に連接する領域にベタシールで形成されていることを特徴とするものである。 The present invention according to claim 3 is the packaging bag according to claim 1 or 2, wherein the oblique seal portion is adjacent to the main edge thermal adhesive portion and the main edge thermal adhesive portion. It is characterized in that it is formed with a solid seal in a region connected to the thermal bonding portion .

本発明の包装袋は、上下および左右の4辺からなり、少なくとも3辺の端縁に端縁熱接着部が形成され、前記端縁熱接着部のいずれかが主端縁熱接着部とされ、前記主端縁熱接着部に連接または近接して蒸気抜き手段を備えた蒸気抜き手段形成部が形成された包装袋であって、前記主端縁熱接着部が形成された1辺に隣接する上下の2辺または左右の2辺の端縁に端縁熱接着部が形成され、前記主端縁熱接着部から該主端縁熱接着部に隣接する上下の2辺または左右の2辺に形成された前記端縁熱接着部まで相互に拡開して延びる2つの斜めシール部が形成されている構成とすることにより、電子レンジ加熱すると平袋であっても蒸気抜き手段形成部が上方を向き、内容物が噴き零れることがないので包装箱や衝立具を使用する必要がなくコスト低減が図れ、また、包装箱や衝立具を組み立てる手間も省けるので利便性を付与できる。また、電子レンジ内を汚すこともなく、手指に火傷することもないので衛生的で安全なものである。 The packaging bag of the present invention comprises four sides, upper and lower, and left and right sides, and an edge thermal bonding portion is formed at an edge of at least three sides, and any one of the edge thermal bonding portions is a main edge thermal bonding portion. A packaging bag in which a steam venting means forming part having a steam venting means is formed adjacent to or adjacent to the main edge thermal bonding part, adjacent to one side on which the main edge thermal bonding part is formed vertical edge heat seal portion to the edge of two sides or right and left two sides are formed of said main edge heat up and down two sides adjacent to the main edge heat seal part from the adhesion portion or the left and right two sides a with the structure in which two oblique seal portion extending diverging from each other are formed to formed the edge thermal bonding unit, a steam vent means forming part be a flat bag when microwave heating is It faces upwards and the contents do not spill out, so there is no need to use packaging boxes or screens. Theft reduction is Hakare, also, the convenience can be granted because Habukeru also labor to assemble the packaging box and screen equipment. In addition, the inside of the microwave oven is not polluted and the fingers are not burned, so that it is hygienic and safe.

本発明に係る包装袋の第一実施形態を示し、(イ)は平面図、(ロ)はA−A線で示す部分断面図である。BRIEF DESCRIPTION OF THE DRAWINGS The 1st embodiment of the packaging bag which concerns on this invention is shown, (A) is a top view, (B) is the fragmentary sectional view shown by the AA line. 本発明に係る包装袋の参考形態を示し、(イ)は平面図、(ロ)はB−B線で示す部分断面図である。The reference form of the packaging bag which concerns on this invention is shown, (A) is a top view, (B) is a fragmentary sectional view shown by the BB line. 本発明に係る包装袋のその他の形態を示す平面図である。It is a top view which shows the other form of the packaging bag which concerns on this invention. 本発明に係る包装袋の電子レンジ加熱により発生した蒸気が蒸気抜き手段形成部より蒸通した時の蒸気放散状態を説明する図である。It is a figure explaining the vapor | steam dissipation state when the vapor | steam generated by the microwave oven heating of the packaging bag which concerns on this invention has vaporized from the vapor removal means formation part.

上記の本発明について、図面等を用いて以下に詳しく説明する。
図1は本発明に係る包装袋の第一実施形態を示し、(イ)は平面図、(ロ)はA−A線で示す部分断面図、図2は本発明に係る包装袋の参考形態を示し、(イ)は平面図、(ロ)はB−B線で示す部分断面図、図3は本発明に係る包装袋のその他の形態を示す平面図、図4は本発明に係る包装袋の電子レンジ加熱により発生した蒸気が蒸気抜き手段形成部より蒸通した時の蒸気放散状態を説明する図であり、図中の1、1’は包装袋、1Aは包装体、2、2u、2d、2r、4’は端縁熱接着部、3は主端縁熱接着部、4は端縁熱接着部形成予定部、5、5’は蒸気抜き手段形成部、5a、5a’はポイントシール部、5b、5b’は切欠、5c、5c’は未シール部、5dは隅部、6、7は斜めシール部、8は半折部、9は内容物、10は積層体、11は基材層、12は中間層、13は熱接着性樹脂層をそれぞれ示す。
The present invention will be described in detail below with reference to the drawings.
FIG. 1 shows a first embodiment of a packaging bag according to the present invention, (A) is a plan view, (B) is a partial sectional view taken along line AA, and FIG. 2 is a reference form of the packaging bag according to the present invention. (B) is a partial sectional view taken along line BB, FIG. 3 is a plan view showing another embodiment of the packaging bag according to the present invention, and FIG. 4 is a packaging according to the present invention. It is a figure explaining the vapor | steam dissipation state when the vapor | steam generate | occur | produced by the microwave oven heating of the bag is vaporized from the vapor removal means formation part, 1, 1 'in a figure is a packaging bag, 1A is a packaging body, 2 and 2u 2d, 2r, 4 'are edge thermal bonding portions, 3 is a main edge thermal bonding portion, 4 is an edge thermal bonding portion forming portion, 5, 5' is a steam release means forming portion, 5a, 5a 'is Point seal portion, 5b, 5b ′ are notches, 5c, 5c ′ are unsealed portions, 5d are corner portions, 6, 7 are oblique seal portions, 8 is a half-folded portion, 9 is contents, 10 is a laminate, 1 the substrate layer, 12 denotes an intermediate layer, 13 is a thermal adhesive resin layer, respectively.

図1は本発明に係る包装袋の第一実施形態を示し、(イ)は平面図であり、(ロ)はA−A線で示す部分断面図であり、蒸気抜き手段形成部の構成を示す。図2は本発明に係る包装袋の参考形態を示し、(イ)は平面図であり、(ロ)はB−B線で示す部分断面図であり、蒸気抜き手段形成部の構成を示す。 FIG. 1 shows a first embodiment of a packaging bag according to the present invention, wherein (A) is a plan view, (B) is a partial cross-sectional view taken along line AA, and shows the configuration of a vapor venting means forming portion. Show. FIG. 2 shows a reference form of the packaging bag according to the present invention, where (A) is a plan view, and (B) is a partial cross-sectional view taken along line BB, showing the configuration of the vapor venting means forming portion.

本発明に係る第一実施形態の包装袋1は、図1(イ)に示すように、2枚の略四角形の積層体の熱接着性樹脂層面同士を対向させて重ね合わせ、上下及び左右の4辺からなり、上辺と左右辺の3辺の端縁に端縁熱接着部2が形成され、左辺の端縁熱接着部2に相当する部分が主端縁熱接着部3とされ、主端縁熱接着部3に連接して蒸気抜き手段を備えた蒸気抜き手段形成部5(点線で囲まれた部分)が形成された構成からなるものである。なお、図1の下辺に一点鎖線によるハッチングで示した部分は端縁熱接着部形成予定部4であり、未接着部の開口部となっているが、この開口部より内容物を包装袋1内に充填した後、端縁を熱接着して端縁熱接着部を形成して密封包装するものである。   As shown in FIG. 1 (a), the packaging bag 1 according to the first embodiment of the present invention has two substantially quadrangular laminates with the heat-adhesive resin layer surfaces facing each other, and is vertically and horizontally The edge thermal bonding portion 2 is formed on the edge of the three sides of the upper side and the left and right sides, and the portion corresponding to the edge thermal bonding portion 2 on the left side is the main edge thermal bonding portion 3. It is composed of a structure in which a steam release means forming part 5 (a part surrounded by a dotted line) provided with a steam release means connected to the edge thermal bonding part 3 is formed. In addition, although the part shown by hatching with the dashed-dotted line on the lower side of FIG. 1 is the edge thermal-bonding part formation scheduled part 4, it is an opening part of an unbonded part, The contents are wrapping bag 1 from this opening part. After filling the inside, the edge is thermally bonded to form an edge thermal bonding portion and hermetically packaged.

本発明に係る第一実施形態の包装袋1は、主端縁熱接着部3から主端縁熱接着部3に隣接する上辺に形成された端縁熱接着部2uまで延びる斜めシール部6と、主端縁熱接着部3に隣接する下辺の端縁熱接着部形成予定部4まで延びる斜めシール部7がそれぞれ形成されている。斜めシール部6は蒸気抜き手段形成部5と連接して形成され、蒸気抜き手段形成部5の上部と接して端縁熱接着部2uの内縁まで延びる斜線と端縁熱接着部2uと主端縁熱接着部3と蒸気抜き手段形成部5で囲まれた略三角形状の領域にベタシールにより形成された構成である。また、斜めシール部7は主端縁熱接着部3の蒸気抜き手段形成部5の下方から下辺の端縁熱接着部形成予定部4の外縁まで延びる斜線と主端縁熱接着部3と端縁熱接着部形成予定部4の外縁で囲まれた三角形の領域にベタシールにより形成された構成である。
このような構成とすることにより、内容物を包装袋に充填し端縁熱接着部形成予定部4を熱接着して密封後、電子レンジで加熱すると平袋であっても包装袋が蒸気で膨らみ内容物が主端縁熱接着部3側から対向する右辺の端縁熱接着部2r側に移動して偏り易くなり、その結果、蒸気抜き手段形成部5が上方を向くので内容物が液体状のものであっても、内容物が切欠5bより噴き零れることを防げるものである。なお、本発明は端縁熱接着部2の位置を明確にするために上辺、下辺、および右辺の端縁熱接着部をそれぞれ2u、2d、2rで示し、端縁熱接着部形成予定部4を熱接着した端縁熱接着部を4’で示すこととする。
The packaging bag 1 according to the first embodiment of the present invention includes an oblique seal portion 6 extending from a main edge thermal bonding portion 3 to an edge thermal bonding portion 2u formed on an upper side adjacent to the main edge thermal bonding portion 3. The oblique seal portions 7 extending to the lower edge thermal bonding portion formation scheduled portion 4 adjacent to the main edge thermal bonding portion 3 are formed. The oblique seal portion 6 is formed to be connected to the steam release means forming portion 5, is in contact with the upper portion of the steam release means forming portion 5 and extends to the inner edge of the edge thermal bonding portion 2 u, the edge thermal bonding portion 2 u, and the main end In this configuration, a solid seal is formed in a substantially triangular region surrounded by the edge thermal bonding portion 3 and the steam release means forming portion 5. Further, the oblique seal portion 7 includes an oblique line extending from the lower side of the steam release means forming portion 5 of the main edge thermal bonding portion 3 to the outer edge of the lower edge thermal bonding portion forming scheduled portion 4, the main edge thermal bonding portion 3 and the end. It is the structure formed by the solid seal in the triangular area | region enclosed by the outer edge of the edge thermal bonding part formation scheduled part 4. FIG.
By adopting such a configuration, the packaging bag is filled with the contents, the edge thermal bonding portion formation scheduled portion 4 is thermally bonded and sealed, and when heated in a microwave oven, the packaging bag is steamed even if it is a flat bag. The swelled contents move from the main edge thermal bonding part 3 side to the opposite edge thermal bonding part 2r side and become easily biased. As a result, the steam venting means forming part 5 faces upward, so the contents are liquid. Even if it is in a shape, the contents can be prevented from spilling from the notch 5b. In the present invention, in order to clarify the position of the edge thermal bonding portion 2, the edge thermal bonding portions on the upper side, the lower side, and the right side are indicated by 2u, 2d, and 2r, respectively, and the edge thermal bonding portion formation scheduled portion 4 is shown. The edge heat-bonded portion where the two are heat-bonded is indicated by 4 '.

本発明に係る包装袋1は、端縁熱接着部2(2u、3、2r、4’)で密封して包装体とするものであり、蒸気抜き手段形成部5は、電子レンジによる加熱に際して発生する蒸気を逃がす為に設けられたものである。図1に示すように蒸気抜き手段形成部5は主端縁熱接着部3と連結してロの字状ポイントシール部5aを設け、このロの字状ポイントシール部5aに囲まれた未シール部5cに連接して切欠5bが設けられた構成からなり、未シール部5cは切欠5bからロの字状ポイントシール部5aの包装袋1の中心に最も近い隅部5dに向かってU字状に設けられている。隅部5dにおいて未シール部5cとロの字状ポイントシール部5aの袋中心側の内縁との長さ、つまりシール幅は2〜5mm程度が好ましい。   A packaging bag 1 according to the present invention is sealed by an edge thermal bonding portion 2 (2u, 3, 2r, 4 ′) to form a package, and the vapor venting means forming portion 5 is used for heating by a microwave oven. It is provided to escape the generated steam. As shown in FIG. 1, the steam release means forming portion 5 is connected to the main edge thermal bonding portion 3 to provide a square-shaped point seal portion 5a, which is unsealed surrounded by the square-shaped point seal portion 5a. The unsealed portion 5c is U-shaped from the notch 5b toward the corner 5d closest to the center of the packaging bag 1 of the square-shaped point seal portion 5a. Is provided. In the corner portion 5d, the length between the unsealed portion 5c and the inner edge on the bag center side of the B-shaped point seal portion 5a, that is, the seal width is preferably about 2 to 5 mm.

このような構成とすることにより、電子レンジによる加熱に際して、ロの字状ポイントシール部5aが内圧により剥離後退して、未シール部5cに到達すると、未シール部5cに連設して設けた切欠5bより速やかに蒸気が抜け自動開封されるものである。したがって、予め包装袋に鋏等で切込み等を入れる手間が省け使用者に利便性を供与するものとなる。   By adopting such a configuration, when the microwave-shaped heating is performed by the microwave oven, the square-shaped point seal portion 5a is peeled and retracted by the internal pressure and reaches the unsealed portion 5c. Vapor quickly escapes from the notch 5b and is automatically opened. Therefore, it is possible to save the trouble of cutting the packaging bag with a scissors or the like in advance and to provide convenience to the user.

前記ロの字状ポイントシール部5aが、主端縁熱接着部3に連接されず、独立して形成されていてもよい。   The square-shaped point seal portion 5 a may be formed independently without being connected to the main edge thermal bonding portion 3.

また、ロの字状ポイントシール部5a内に設けた未シール部5cにより、未シール部5cに連接して形成する切欠5bの位置がずれても、未シール部5cとロの字状ポイントシール部5aの隅部5dの袋の内側とのシール幅を一定に保つことができる。したがって、内圧によりロの字状ポイントシール部5aが剥離後退する隅部5dから未シール部5cに至る距離が一定となり、安定した自動開封が可能となる。図1(ロ)は、蒸気抜き手段形成部5を示す断面図であり、切欠5bは2枚の積層体10を貫通して設けられ、未シール部5cに連接して形成されている。切欠5bは未シール部5cと連結していれば未シール部内に設けられていてもよい。   Even if the position of the notch 5b formed in connection with the unsealed portion 5c is shifted by the unsealed portion 5c provided in the square-shaped point seal portion 5a, the unsealed portion 5c and the square-shaped point seal are formed. The seal width with the inside of the bag at the corner 5d of the portion 5a can be kept constant. Accordingly, the distance from the corner 5d where the square-shaped point seal portion 5a is peeled and retracted by the internal pressure to the unsealed portion 5c is constant, and stable automatic opening is possible. FIG. 1B is a cross-sectional view showing the vapor venting means forming portion 5, and the notch 5 b is formed through the two laminated bodies 10 and is formed so as to be connected to the unsealed portion 5 c. The cutout 5b may be provided in the unsealed portion as long as it is connected to the unsealed portion 5c.

次に、ロの字状ポイントシール部5aを形成する位置は、図1(イ)に示すように、主端縁熱接着部3の上下方向の長さの半分の位置から上辺に形成された端縁熱接着部2uとの間で主端縁熱接着部3に連接して設ける。さらには包装袋の中心部を中心とした円を描いたとき、包装袋1の中心からロの字状ポイントシール部5aの隅部5dに接する円の半径が端縁熱接着部2および斜めシール部6、7の内縁に接する円の半径よりも短くなるような位置に設ける。このような構成とすることにより、電子レンジ加熱により発生する蒸気の熱と内圧の上昇によるロの字状ポイントシール部5aの剥離後退が隅部5dから進み自動開封がスムーズに行われるので好ましい。   Next, the position where the square-shaped point seal portion 5a is formed was formed on the upper side from the half of the vertical length of the main edge thermal bonding portion 3 as shown in FIG. It is connected to the main edge thermal bonding part 3 between the edge thermal bonding part 2u. Furthermore, when a circle centered on the center of the packaging bag is drawn, the radius of the circle in contact with the corner 5d of the B-shaped point seal portion 5a from the center of the packaging bag 1 is the edge thermal bonding portion 2 and the diagonal seal. It is provided at a position that is shorter than the radius of the circle in contact with the inner edges of the portions 6 and 7. By adopting such a configuration, it is preferable because the peeling and retreating of the square-shaped point seal portion 5a by the rise of the heat of steam generated by microwave heating and the increase of the internal pressure proceeds from the corner portion 5d and the automatic opening is performed smoothly.

また、ロの字状ポイントシール部5aの形状は、隅部5dが包装袋1の中心方向に突き出した形状とするのが好ましい。ロの字状ポイントシール部5aの外形は隅部5dを突き出した形状にすれば、特に限定されるものではなく、台形状や三角形状でもよい。   Moreover, it is preferable that the shape of the square-shaped point seal portion 5 a is a shape in which the corner portion 5 d protrudes in the center direction of the packaging bag 1. The outer shape of the B-shaped point seal portion 5a is not particularly limited as long as the shape protrudes from the corner 5d, and may be trapezoidal or triangular.

図2は、本発明に係る包装袋の参考形態を示す。図2(イ)に示すように本発明に係る参考形態の包装袋1’は、2枚の略四角形積層体の熱接着性樹脂層面同士を対向させて重ね合わせ、上下及び左右の4辺からなり、左辺と上下辺の3辺の端縁に端縁熱接着部2が形成され、左辺の端縁熱接着部2が主端縁熱接着部3とされ、主端縁熱接着部3に連接して蒸気抜き手段を備えた蒸気抜き手段形成部5’が形成された構成からなるものである。そして、右辺が端縁熱接着部形成予定部4とされている構成である。 FIG. 2 shows a reference form of the packaging bag according to the present invention. As shown in FIG. 2 (a), the packaging bag 1 'of the reference form according to the present invention is overlapped with the heat-adhesive resin layer surfaces of the two substantially quadrangular laminates facing each other, and from the top, bottom, left and right sides. The edge thermal bonding part 2 is formed at the edge of the three sides of the left side and the upper and lower sides, the edge thermal bonding part 2 on the left side is made the main edge thermal bonding part 3, and the main edge thermal bonding part 3 It has a configuration in which a steam release means forming portion 5 ′ having a steam release means connected thereto is formed. And it is the structure by which the right side is the edge thermal-bonding part formation scheduled part 4. FIG.

本発明に係る参考形態の包装袋1’は、主端縁熱接着部3から主端縁熱接着部3に隣接する上辺に形成された端縁熱接着部2uまで延びる斜めシール部6が形成されている。斜めシール部6は蒸気抜き手段形成部5’と連接して形成され、蒸気抜き手段形成部5’の上部と接して端縁熱接着部2uの内縁と右辺の端縁熱接着部形成予定部4の内縁との交点まで延びる斜線と端縁熱接着部2uと主端縁熱接着部3と蒸気抜き手段形成部5’で囲まれた略三角形状の領域にベタシールで形成された構成である。このような構成とすることにより包装袋1’は第一実施形態と同様の効果を奏する。 The packaging bag 1 ′ of the reference form according to the present invention is formed with an oblique seal portion 6 extending from the main edge thermal bonding portion 3 to the edge thermal bonding portion 2 u formed on the upper side adjacent to the main edge thermal bonding portion 3. Has been. The oblique seal portion 6 is formed to be connected to the steam release means forming portion 5 ′, and is in contact with the upper portion of the steam release means forming portion 5 ′ so as to form the inner edge of the edge thermal bonding portion 2u and the edge thermal bonding portion on the right side. 4 is formed with a solid seal in a substantially triangular region surrounded by a diagonal line extending to the intersection with the inner edge of 4, the edge thermal bonding portion 2 u, the main edge thermal bonding portion 3, and the steam release means forming portion 5 ′. . With such a configuration, the packaging bag 1 ′ has the same effects as the first embodiment.

図2(イ)、(ロ)に示すように蒸気抜き手段形成部5’は主端縁熱接着部3と連結してコの字状ポイントシール部5a’を設け、このコの字状ポイントシール部5a’に囲まれた未シール部5c’内に切欠5b’が設けられた構成である。コの字状ポイントシール部5a’のシール幅としては、2mm〜5mm程度が好ましく、加熱による内圧でスムーズにシール剥離できる。シール幅が2mm未満であると、シール強度が不安定となるので好ましくなく、5mmを超えると、電子レンジ加熱による内圧でスムーズにシール剥離しにくくなるので好ましくない。   As shown in FIGS. 2 (a) and 2 (b), the steam release means forming portion 5 ′ is connected to the main edge thermal bonding portion 3 to provide a U-shaped point seal portion 5a ′, and this U-shaped point. In this configuration, a notch 5b ′ is provided in an unsealed portion 5c ′ surrounded by the seal portion 5a ′. The seal width of the U-shaped point seal portion 5a 'is preferably about 2 mm to 5 mm, and the seal can be peeled off smoothly by internal pressure due to heating. If the seal width is less than 2 mm, the seal strength becomes unstable, which is not preferable, and if it exceeds 5 mm, it is difficult to smoothly peel off the seal due to the internal pressure due to microwave heating, which is not preferable.

その他は第一実施形態と同様であり、同じ符号を付して説明を省略する。   Others are the same as those of the first embodiment, and the same reference numerals are given and description thereof is omitted.

図3は本発明に係る包装袋のその他の形態を示す平面図であって、図3(イ)は四方シールタイプの包装袋、図3(ロ)は三方シールタイプの包装袋を示す。
図3(イ)の四方シールタイプの包装袋は参考形態の蒸気抜き手段形成部5’を採用したものである。図3(イ)の斜めシール部は2つ設けられた例を示すものであり、斜めシール部6は蒸気抜き手段形成部5’と連接して形成され、蒸気抜き手段形成部5’の上部と接して端縁熱接着部2uの内縁と右辺の端縁熱接着部形成予定部4の内縁との交点まで延びる斜線と端縁熱接着部2uと主端縁熱接着部3と蒸気抜き手段形成部5’で囲まれた略三角形状の領域にベタシールで形成された構成であり、斜めシール部7は主端縁熱接着部3の蒸気抜き手段形成部5’の下方から下辺の端縁熱接着部2dと右辺の端縁熱接着部形成予定部4の内縁との交点まで延びる斜線と主端縁熱接着部3と下辺の端縁熱接着部2dで囲まれた略三角形状の領域にベタシールで形成された構成である。
FIG. 3 is a plan view showing another embodiment of the packaging bag according to the present invention. FIG. 3 (a ) shows a four-side seal type packaging bag, and FIG. 3 (b) shows a three-side seal type packaging bag.
The four-side-seal type packaging bag of FIG. 3 (a ) employs a steam release means forming portion 5 ′ of a reference form. FIG. 3 (a) shows an example in which two oblique seal portions are provided. The oblique seal portion 6 is formed so as to be connected to the vapor venting means forming portion 5 ′, and is an upper portion of the vapor venting means forming portion 5 ′. A diagonal line extending to the intersection of the inner edge of the edge thermal bonding portion 2u and the inner edge of the right edge thermal bonding portion forming scheduled portion 4, the edge thermal bonding portion 2u, the main edge thermal bonding portion 3, and the steam venting means It is the structure formed by the solid seal in the substantially triangular area | region enclosed by formation part 5 ', and the diagonal seal | sticker part 7 is the edge of a lower side from the downward direction of the steam release means formation part 5' of the main edge thermal bond part 3 A substantially triangular area surrounded by a diagonal line extending to the intersection of the thermal bonding part 2d and the inner edge of the edge thermal bonding part formation scheduled part 4 on the right side, the main edge thermal bonding part 3 and the lower edge thermal bonding part 2d And a solid seal.

図3()は三方シールタイプの包装袋を示し、矩形状の1枚の積層体の熱接着性樹脂層面同士が対向するように半折して重ね合わせ右側に半折部8を設け、上辺、左辺、下辺の3辺に端縁熱接着部を形成し左辺を主端縁熱接着部3とし、下辺を端縁熱接着部形成予定部4とする構成であり、蒸気抜き手段形成部に第一実施形態の蒸気抜き手段形成部5を採用したものである。図3(イ)の斜めシール部は2つ設けられた例を示すものであり、斜めシール部6は蒸気抜き手段形成部5の上部と接して上辺の端縁熱接着部2uの内縁と半折部8との交点まで延びる斜線と端縁熱接着部2uと主端縁熱接着部3と蒸気抜き手段形成部5で囲まれた略三角形状の領域にベタシールで形成された構成である。斜めシール部7は蒸気抜き手段形成部5と主端縁熱接着部3の接点から下辺の端縁熱接着部形成予定部4の外縁まで延びる斜線と主端縁熱接着部3と下辺の端縁熱接着部形成予定部4の外縁で囲まれた略三角形状の領域にベタシールで形成された構成であるFIG. 3 ( b ) shows a three-sided seal type packaging bag, half-folded so that the heat-adhesive resin layer surfaces of one rectangular laminate face each other, and a half-folded portion 8 is provided on the right side, An edge thermal bonding portion is formed on the three sides of the upper side, the left side, and the lower side, the left side is the main edge thermal bonding portion 3, and the lower side is the edge thermal bonding portion formation scheduled portion 4. Further, the steam release means forming part 5 of the first embodiment is adopted. FIG. 3 (a) shows an example in which two oblique seal portions are provided. The oblique seal portion 6 is in contact with the upper portion of the steam release means forming portion 5, and the inner edge and the half of the upper edge thermal bonding portion 2u. In this configuration, a solid line is formed in a substantially triangular region surrounded by a diagonal line extending to the intersection with the folding portion 8, the edge thermal bonding portion 2 u, the main edge thermal bonding portion 3, and the steam release means forming portion 5. The oblique seal portion 7 includes an oblique line extending from the contact point between the steam release means forming portion 5 and the main edge thermal bonding portion 3 to the outer edge of the lower edge thermal bonding portion formation scheduled portion 4, and the ends of the main edge thermal bonding portion 3 and the lower edge. This is a configuration in which a solid seal is formed in a substantially triangular region surrounded by the outer edge of the edge thermal bonding portion formation scheduled portion 4 .

本発明に係る包装袋は、上下および左右の4辺からなる形態であればよく、四方シール、三方シール等の平袋に好適なものである。また、蒸気抜き手段形成部が連接して形成される主端縁熱接着部は上下および左右の4辺のいずれかの端縁熱接着部に形成できるものであり、本発明の実施形態に限定されるものではない。斜めシール部は主端縁熱接着部から該主端縁熱接着部に隣接する2辺のうちの1辺または2辺に形成された端縁熱接着部まで延びるように形成されていればよく、主端縁熱接着部側を始点、端縁熱接着部側を終点とすると、始点、終点の位置は、内容量や内容物の種類により適宜設計すればよいものである。また、斜めシール部はベタシールが好ましいが、熱シワが材質により発生する場合には線シールあるいは、ベタシール部内に部分的に未シール部を設けて熱シワ緩和対策を付与してもよい。   The packaging bag which concerns on this invention should just be a form which consists of 4 sides of upper and lower sides, and right and left, and is suitable for flat bags, such as a four-side seal and a three-side seal. Further, the main edge thermal bonding portion formed by connecting the steam release means forming portions can be formed on any one of the upper and lower edge thermal bonding portions, and is limited to the embodiment of the present invention. Is not to be done. The oblique seal portion may be formed so as to extend from the main edge thermal bonding portion to one of the two sides adjacent to the main edge thermal bonding portion or an edge thermal bonding portion formed on two sides. Assuming that the main edge thermal bonding portion side is the starting point and the edge thermal bonding portion side is the end point, the positions of the starting point and the end point may be appropriately designed depending on the content and the type of contents. In addition, the oblique seal portion is preferably a solid seal. However, when heat wrinkles are generated depending on the material, a wire seal or an unsealed portion may be partially provided in the solid seal portion to take measures against thermal wrinkles.

本発明に係る包装袋は、主端縁熱接着部から隣接する端縁熱接着部まで延びる斜めシール部を形成することを要旨とするものであり、主旨を逸脱しない範囲において、蒸気抜き手段形成部の構成は限定されるものではない。   The gist of the packaging bag according to the present invention is to form an oblique seal portion extending from the main edge thermal bonding portion to the adjacent edge thermal bonding portion, and in a range not departing from the gist, the steam venting means is formed. The configuration of the part is not limited.

図4は本発明に係る包装袋1に内容物9を充填し端縁熱接着部形成予定部4で熱接着し端縁熱接着部4aを形成して密封した包装体1Aを電子レンジ加熱した際、発生した蒸気が蒸気抜き手段形成部5より蒸通した時の蒸気放散状態を説明する図であって、図1のC−C線に相当する断面図として示したものである。包装体1Aを電子レンジ加熱すると加熱により発生した蒸気の熱や内圧によりポイントシール部5aの隅部5dよりシール剥離後退し未シール部5cに達すると切欠5bより蒸気が放散され、蒸気抜き手段形成部5より自動開封される。   FIG. 4 shows that the packaging bag 1 according to the present invention is filled with the contents 9 and thermally bonded at the edge thermal bonding portion formation scheduled portion 4 to form the edge thermal bonding portion 4a and sealed, and the package 1A is heated in a microwave oven. At this time, the generated steam is vaporized from the vapor venting means forming portion 5 and is a view for explaining the vapor diffusion state, which is shown as a cross-sectional view corresponding to the line CC in FIG. When the package 1A is heated by a microwave oven, the heat of the steam generated by heating or the internal pressure causes the seal to peel away from the corner 5d of the point seal portion 5a and when the unsealed portion 5c is reached, the steam is dissipated from the notch 5b to form a vapor venting means. Automatically opened from part 5.

次に、本発明の包装袋1、1’を形成する積層体10の構成材料について図1(ロ)、図2(ロ)を参照しながら説明する。積層体10は、図1(ロ)、図2(ロ)に示すように、基材層11、印刷層、接着層、中間層12、接着層、熱接着性樹脂層13を順次に積層するものである。中間層12は内容物や包装体の殺菌条件や包装体の輸送条件等を勘案して適宜設けるものであり、条件により省略できる層である。なお、印刷層、接着層は図示していない。   Next, the constituent material of the laminated body 10 which forms the packaging bag 1, 1 'of this invention is demonstrated, referring FIG. 1 (B) and FIG. 2 (B). As shown in FIGS. 1 (b) and 2 (b), the laminated body 10 is formed by sequentially laminating a base material layer 11, a printing layer, an adhesive layer, an intermediate layer 12, an adhesive layer, and a thermal adhesive resin layer 13. Is. The intermediate layer 12 is appropriately provided in consideration of the contents, the sterilization conditions of the package, the transport conditions of the package, and the like, and can be omitted depending on the conditions. Note that the print layer and the adhesive layer are not shown.

基材層11としては、耐熱性を有し、通常、電子レンジによる加熱に耐えれるものであれば使用でき、限定されるものではない。例えば、延伸ポリエチレンテレフタレートフィルム、シリカ蒸着延伸ポリエチレンテレフタレートフィルム、アルミナ蒸着延伸ポリエチレンテレフタレートフィルム、延伸ナイロンフィルム、シリカ蒸着延伸ナイロンフィルム、アルミナ蒸着延伸ナイロンフィルム、延伸ポリプロピレンフィルム、ポリビニルアルコールコート延伸ポリプロピレンフィルム等のいずれか、またはこれらを2以上を積層した複合フィルムが使用できる。また、基材層11の厚みは10μm〜50μm、好ましくは10μm〜30μm程度である。   The base material layer 11 can be used as long as it has heat resistance and can withstand heating by a microwave oven, and is not limited. For example, stretched polyethylene terephthalate film, silica-deposited stretched polyethylene terephthalate film, alumina-deposited stretched polyethylene terephthalate film, stretched nylon film, silica-deposited stretched nylon film, alumina-deposited stretched nylon film, stretched polypropylene film, polyvinyl alcohol-coated stretched polypropylene film, etc. Alternatively, a composite film in which two or more of these are laminated can be used. Moreover, the thickness of the base material layer 11 is 10 micrometers-50 micrometers, Preferably it is about 10 micrometers-30 micrometers.

中間層12としては、基材層11で示したフィルムやエチレン−ビニルアルコール共重合体フィルム等が使用される。   As the intermediate layer 12, the film shown in the base material layer 11, an ethylene-vinyl alcohol copolymer film, or the like is used.

また、熱接着性樹脂層13を構成する樹脂は、通常、電子レンジによる加熱に耐えるものであれば使用できる。例えば、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、高密度ポリエチレン、ポリプロピレン、プロピレン−エチレン共重合体、エチレン−酢酸ビニル共重合体、エチレンーアクリル酸共重合体、エチレン−メタクリル酸共重合体、エチレン−メチルアクリレート共重合体、エチレン−エチルアクリレート共重合体、エチレン−メチルメタクリレート共重合体またはアイオノマー等樹脂を使用できる。   Moreover, the resin which comprises the thermoadhesive resin layer 13 can be normally used if it can endure the heating by a microwave oven. For example, low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, polypropylene, propylene-ethylene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid A resin such as a copolymer, an ethylene-methyl acrylate copolymer, an ethylene-ethyl acrylate copolymer, an ethylene-methyl methacrylate copolymer, or an ionomer can be used.

熱接着性樹脂層はこれらの樹脂を押出ラミネート法により形成しても良いし、予め、Tダイ法またはインフレーション法等により製膜したフィルムとして、基材層とドライラミネートあるいは押出ラミネート法等により積層しても良い。熱接着性樹脂層の厚さは、20μm〜100μm程度が好ましい。また、電子レンジ加熱によるポイントシール部の剥離後退は熱接着性樹脂層の凝集破壊が好ましい。   The heat-adhesive resin layer may be formed by extrusion lamination of these resins, or laminated in advance by a base layer and dry lamination or extrusion lamination as a film formed by T-die method or inflation method. You may do it. The thickness of the heat-adhesive resin layer is preferably about 20 μm to 100 μm. Further, the peeling and retreating of the point seal portion by heating in the microwave oven is preferably cohesive failure of the thermoadhesive resin layer.

また、熱接着性樹脂層の樹脂としては、とりわけ、低温時(0℃)および常温時(25℃)において十分なシール強度があり、電子レンジ加熱時(90℃以上)にシール強度が低く、速やかに剥離する性質を有する樹脂として、プロピレン−エチレンブロック共重合体樹脂を主成分とする樹脂組成物からなるものを使用することが好ましい。   In addition, as the resin of the heat-adhesive resin layer, in particular, there is sufficient seal strength at low temperatures (0 ° C.) and normal temperatures (25 ° C.), and the seal strength is low during microwave heating (90 ° C. or higher). It is preferable to use a resin composed of a resin composition containing a propylene-ethylene block copolymer resin as a main component as a resin having a property of quickly peeling.

次に、基材層11と熱接着性樹脂層13、基材層11と中間層12と熱接着性樹脂層13との積層は押出ラミネーション法、ドライラミネーション法等の通常のラミネーション法により積層され、接着層とは押出ラミネーション法に使用されるポリオレフィン系樹脂等の接着樹脂層、ドライラミネーション法に使用される例えば、ウレタン系2液反応型接着剤等の接着剤層である。   Next, the base material layer 11 and the thermoadhesive resin layer 13, and the base material layer 11, the intermediate layer 12, and the thermoadhesive resin layer 13 are laminated by a normal lamination method such as an extrusion lamination method or a dry lamination method. The adhesive layer is an adhesive resin layer such as a polyolefin resin used in the extrusion lamination method, and an adhesive layer such as a urethane two-component reactive adhesive used in the dry lamination method.

本発明の包装袋1、1’は、図1〜図3に示すように、前記積層体10を使用して、製袋することにより四方シールタイプや三方シールタイプの包装袋に製造することができる。その後、端縁熱接着部形成予定部4より内容物を充填し、該部4を熱接着して端縁熱接着部となし包装体1Aが製造される。   As shown in FIGS. 1 to 3, the packaging bag 1, 1 ′ of the present invention can be manufactured into a four-side seal type or three-side seal type packaging bag by making a bag using the laminate 10. it can. Thereafter, the contents are filled from the edge thermal bonding part formation scheduled part 4, and the part 4 is thermally bonded to produce the edge thermal bonding part and the wrapping body 1A.

次に、蒸気抜き手段形成部および斜めシール部の形成方法について説明する。蒸気抜き手段形成部および斜めシール部は製袋時に形成される。蒸気抜き手段形成部は、主端縁熱接着部3を形成する熱板と蒸気抜き手段形成部5または5’を形成する熱板を一体型とするシールバーを用いてヒートシールすることにより形成する。その後、所定の形状の斜めシール部型を有するシールバーを用いてヒートシールし斜めシール部を形成する。そして、所定の形状の金型で打抜いて切欠5bまたは5b’を形成する。以上のように蒸気抜き手段形成部と主端縁熱接着部を一体型としたシールバーと斜めシール部用のシールバーを新規に作製するだけで、新たな設備投資をすることなく一般の四方シールタイプ袋の製袋機や三方シールタイプ袋の製袋機を用いて製袋することができる。なお、形成する切欠5bまたは切欠5b’は、一方の積層体10に設けてもよいが図1、図2に示すように、2枚の積層体10を貫通するように設ける方が製袋し易く生産性が向上するので好ましい。また、図示していないが製袋時に包装袋にノッチを設けて電子レンジ加熱後の包装体に易開封性を付与しておく方が好ましい。   Next, a method for forming the steam release means forming portion and the oblique seal portion will be described. The steam release means forming portion and the oblique seal portion are formed at the time of bag making. The steam release means forming part is formed by heat-sealing using a seal bar in which the hot plate forming the main edge thermal bonding part 3 and the hot plate forming the steam release means forming part 5 or 5 'are integrated. To do. Thereafter, heat sealing is performed using a seal bar having an oblique seal part mold having a predetermined shape to form an oblique seal part. Then, a notch 5b or 5b 'is formed by punching with a mold having a predetermined shape. As described above, the general four-way without any new capital investment, just by creating a new seal bar that integrates the steam release means forming part and the main edge thermal bonding part and the seal bar for the oblique seal part. Bags can be produced using a seal type bag making machine or a three-side seal type bag making machine. The cutout 5b or the cutout 5b ′ to be formed may be provided in one of the laminated bodies 10, but as shown in FIGS. 1 and 2, it is more likely that the cutout 5b or the cutout 5b ′ is provided so as to penetrate through the two laminated bodies 10. It is preferable because productivity is improved easily. Although not shown, it is preferable to provide a notch in the packaging bag during bag making to give easy opening to the package after heating in the microwave.

以下に実施例および比較例を挙げて本発明を更に説明する。   The present invention will be further described below with reference to examples and comparative examples.

〔実施例1〕
厚さ12μmのアルミナ蒸着ポリエチレンテレフタレートフィルム、15μmの延伸ナイロンフィルム、60μmの無延伸ポリプロピレンフィルムをウレタン系2液反応型接着剤でドライラミネートした積層体で、図1に示すような本発明に係る斜めシール6、7および蒸気抜き手段形成部5を備えた包装袋1(外寸法、上下辺間の高さ:175mm、左右辺間の幅:125mm、端縁熱接着部のシール幅:10mm)を作製した。斜めシール部6は端縁熱接着部2uの左右方向の長さの中間位置と蒸気抜き手段形成部5の上右隅部とを結ぶ斜線と蒸気抜き手段形成部5の上部と主端縁熱接着部3の内縁と端縁熱接着部2uの内縁で囲まれた領域にベタシールで設け、斜めシール部7はa:65mm、b:15mmとする略三角形領域にベタシールで設けた。また、蒸気抜き手段形成部5は、ロの字状ポイントシール部5a、未シール部5c、切欠5bの寸法をc:25mm、d:15mm、e:3mm、切欠の直径:5mmφとして上辺から30mmの位置に設けた。
[Example 1]
A laminate obtained by dry laminating a 12 μm thick alumina-deposited polyethylene terephthalate film, a 15 μm stretched nylon film, and a 60 μm unstretched polypropylene film with a urethane-based two-component reactive adhesive, as shown in FIG. A packaging bag 1 (outer dimensions, height between upper and lower sides: 175 mm, width between left and right sides: 125 mm, seal width of edge thermal bonding portion: 10 mm) provided with seals 6 and 7 and a steam release means forming portion 5 Produced. The oblique seal portion 6 has a diagonal line connecting an intermediate position in the left-right direction of the edge thermal bonding portion 2u and the upper right corner of the steam release means forming portion 5, the upper portion of the steam release means forming portion 5, and the main edge heat. A solid seal was provided in a region surrounded by the inner edge of the bonding portion 3 and the inner edge of the edge thermal bonding portion 2u, and the oblique seal portion 7 was provided in a substantially triangular region having a: 65 mm and b: 15 mm with a solid seal. Further, the steam release means forming portion 5 has a square point seal portion 5a, an unsealed portion 5c, and a notch 5b with dimensions of c: 25 mm, d: 15 mm, e: 3 mm, and a notch diameter: 5 mmφ, and 30 mm from the upper side. It was provided in the position.

上記で得られた包装袋1に、内容物として、市販のカレー210gを入れ、端縁熱接着部形成予定部4をシールして密封し包装体1Aを作製後、120℃で30分間レトルト処理したものを、出力500W電子レンジで加熱した結果、経時につれて蒸気抜き手段形成部5側が高い位置となり蒸気抜き手段形成部5を有する主端縁熱接着部3に対向する辺側にかけて傾斜を生じ、カレーが蒸気抜き手段形成部5を有する主端縁熱接着部3に対向する辺側に移動し、蒸気抜き手段形成部5近傍にはカレーのない空間ができ、約1分20秒後に切欠5bから蒸気が速やかに抜け、内容物の噴き零れもなく、調理することができた。また、電子レンジから取り出す際に、斜めシール部6が形成されたベタシール部分を摘むことにより火傷することなく安全に取り出すことができた。   Put the commercially available curry 210g as the contents in the packaging bag 1 obtained above, seal and seal the edge thermal bonding part formation scheduled part 4 to produce a package 1A, and then retort at 120 ° C. for 30 minutes As a result of heating with a 500 W output microwave oven, as the time passes, the steam release means forming part 5 side becomes a higher position, and an inclination is produced toward the side facing the main edge thermal bonding part 3 having the steam release means forming part 5; The curry moves to the side opposite to the main edge thermal bonding part 3 having the steam release means forming part 5, and a space without curry is formed in the vicinity of the steam release means forming part 5, and the notch 5b is formed after about 1 minute and 20 seconds. The steam escaped quickly, and the contents could be cooked without spilling. Moreover, when taking out from a microwave oven, it was able to take out safely, without being burned by picking the solid seal part in which the diagonal seal | sticker part 6 was formed.

〔比較例1〕
実施例1と同様の積層体を用いて、図1に示すような、蒸気抜き手段形成部5のみを設け、斜めシール部6、7を省いた構成とした。その他は実施例1と同じとした。
[Comparative Example 1]
Using the same laminate as in Example 1, only the vapor venting means forming portion 5 as shown in FIG. 1 was provided, and the oblique seal portions 6 and 7 were omitted. Others were the same as in Example 1.

比較例で得られた包装体を実施例と同様に120℃で30分間レトルト処理した後、蒸気抜き手段形成部を上にした状態で、出力500W電子レンジで加熱した結果、約1分20秒後に切欠から蒸気が速やかに抜けたが、同時に内容物の噴き零れが発生し、カレーが飛び散り電子レンジ内を汚した。 The package obtained in Comparative Example 1 was retorted at 120 ° C. for 30 minutes in the same manner as in Example 1, and then heated in an output 500 W microwave oven with the steam release means forming part facing up. After 20 seconds, the steam quickly escaped from the notch, but at the same time, the contents spilled and curry was scattered and the inside of the microwave oven was soiled.

1、1’ 包装袋
1A 包装体
2、2u、2d、2r、4’ 端縁熱接着部
3 主端縁熱接着部
4 端縁熱接着部形成予定部
5、5’ 蒸気抜き手段形成部
5a、5a’ ポイントシール部
5b、5b’ 切欠
5c、5c’ 未シール部
5d 隅部
6、7 斜めシール部
8 半折部
9 内容物
10 積層体
11 基材層
12 中間層
13 熱接着性樹脂層
DESCRIPTION OF SYMBOLS 1, 1 'packaging bag 1A Packaging body 2, 2u, 2d, 2r, 4' edge thermal bonding part 3 main edge thermal bonding part 4 edge thermal bonding part formation scheduled part 5, 5 'steam venting means formation part 5a 5a 'Point seal portion 5b, 5b' Notch 5c, 5c 'Unsealed portion 5d Corner portion 6, 7 Diagonal seal portion 8 Half-fold portion 9 Contents 10 Laminate 11 Base material layer 12 Intermediate layer 13 Thermal adhesive resin layer

Claims (3)

上下および左右の4辺からなり、少なくとも3辺の端縁に端縁熱接着部が形成され、前記端縁熱接着部のいずれかが主端縁熱接着部とされ、前記主端縁熱接着部に連接または近接して蒸気抜き手段を備えた蒸気抜き手段形成部が形成された包装袋であって、
前記主端縁熱接着部が形成された1辺に隣接する上下の2辺または左右の2辺の端縁に端縁熱接着部が形成され、
前記主端縁熱接着部から該主端縁熱接着部に隣接する上下の2辺または左右の2辺に形成された前記端縁熱接着部まで相互に拡開して延びる2つの斜めシール部が形成されていることを特徴とする包装袋。
It consists of four sides, upper and lower, and left and right sides, and an edge thermal bonding portion is formed at an edge of at least three sides, and any one of the edge thermal bonding portions is a main edge thermal bonding portion, and the main edge thermal bonding is performed. A packaging bag in which a steam venting means forming part provided with a steam venting means is connected to or in close proximity to the part,
An edge thermal bonding portion is formed on the edge of two upper and lower sides adjacent to one side where the main edge thermal bonding portion is formed, or two left and right sides,
Two oblique seal portion extending diverging from each other from said main edge heat seal portion to the edge thermal bonding portions formed on the two sides of the two sides or the left and right upper and lower adjacent main edge heat seal portion A packaging bag characterized by being formed.
前記斜めシール部が前記蒸気抜き手段形成部に連接して形成されていることを特徴とする請求項1記載の包装袋。 The packaging bag according to claim 1, wherein the oblique seal portion is formed so as to be connected to the steam release means forming portion. 前記斜めシール部が、前記主端縁熱接着部および該主端縁熱接着部と隣接する前記端縁熱接着部に連接する領域にベタシールで形成されていることを特徴とする請求項1または2に記載の包装袋。 2. The oblique seal portion is formed by a solid seal in a region connected to the main edge thermal bonding portion and the edge thermal bonding portion adjacent to the main edge thermal bonding portion. 2. The packaging bag according to 2.
JP2011014768A 2011-01-27 2011-01-27 Packaging bag Expired - Fee Related JP5747523B2 (en)

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