WO2022172871A1 - Pouch for microwave oven use - Google Patents

Pouch for microwave oven use Download PDF

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Publication number
WO2022172871A1
WO2022172871A1 PCT/JP2022/004434 JP2022004434W WO2022172871A1 WO 2022172871 A1 WO2022172871 A1 WO 2022172871A1 JP 2022004434 W JP2022004434 W JP 2022004434W WO 2022172871 A1 WO2022172871 A1 WO 2022172871A1
Authority
WO
WIPO (PCT)
Prior art keywords
slit
film
pouch
steam
seal
Prior art date
Application number
PCT/JP2022/004434
Other languages
French (fr)
Japanese (ja)
Inventor
礼奈 東海林
崇 三浦
Original Assignee
東洋製罐株式会社
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 東洋製罐株式会社 filed Critical 東洋製罐株式会社
Priority to JP2022547108A priority Critical patent/JP7164768B1/en
Priority to CN202280008656.0A priority patent/CN116710369A/en
Priority to KR1020237023557A priority patent/KR20230118650A/en
Priority to EP22752695.1A priority patent/EP4292953A1/en
Publication of WO2022172871A1 publication Critical patent/WO2022172871A1/en
Priority to JP2022166503A priority patent/JP2022179809A/en
Priority to US18/231,331 priority patent/US20230391536A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package
    • B65D81/3446—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
    • B65D81/3461—Flexible containers, e.g. bags, pouches, envelopes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package
    • B65D81/3446—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
    • B65D81/3453—Rigid containers, e.g. trays, bottles, boxes, cups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/01—Ventilation or drainage of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package
    • B65D81/3446—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2205/00—Venting means
    • B65D2205/02—Venting holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D2581/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within
    • B65D2581/3437—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within specially adapted to be heated by microwaves
    • B65D2581/3439—Means for affecting the heating or cooking properties

Definitions

  • the present invention relates to a pouch for microwave ovens equipped with an automatic steam release mechanism that automatically releases steam inside during heating.
  • pouches for microwave ovens are generally provided with an automatic steam release mechanism that automatically releases steam inside during heating (see, for example, Patent Document 1).
  • an automatic steam release mechanism that automatically releases steam inside during heating
  • FIG. 10 a steam release seal portion 130 which is formed by heat-sealing the stacked films 111 and 112 and isolates a steam release portion 140 inside thereof from the content storage portion 114. and a slit 150 penetrating through the first film 111 at the vapor release portion 140 .
  • the present invention is intended to solve these problems, and it is an object of the present invention to provide a microwave oven pouch that has a simple structure and can ensure a large opening in the slit during microwave heating. It is.
  • the present invention is a pouch for a microwave oven provided with an automatic steam venting mechanism, wherein the automatic steam venting mechanism is formed by heat-sealing a first film and a second film that are superimposed, and includes a steam releasing portion inside the first film and the second film.
  • a vapor release seal portion isolated from an article containing portion; a slit formed in the first film at the vapor release portion; and a flap piece formed in the first film and partitioned by the slit;
  • the extraction seal portion has a seal peeling start portion that starts peeling due to steam generated in the content storage portion during heating, and the slit is provided at both ends of the slit and at the seal peeling start portion rather than at both ends of the slit.
  • the problem is solved by further including an unsealed portion to which no film is welded, and a control seal portion in which a part of the flap piece formed on the first film is heat-sealed to the second film. It is.
  • the automatic vapor venting mechanism includes an unsealed portion formed so as to cover the entire circumference of the slit and a portion of the flap piece formed on the first film, which is heat-sealed to the second film for control.
  • the first and second films tend to separate due to the increase in the internal pressure of the pouch, whereas in the region where the flap piece is formed, which is the side farther from the seal peeling start part than the slit, the control Since the first and second films are prevented from being separated by the sealing portion, the opening in the slit can be ensured to be large and reliable, and the vapor can be discharged satisfactorily. In addition, since the unsealed portion is formed so as to cover the entire periphery of the slit, the first and second films are reliably separated from each other by an increase in the internal pressure of the pouch on the side closer to the seal peeling start portion than the slit. be able to.
  • FIG. 1 is an explanatory diagram showing the microwave pouch according to the first embodiment of the present invention
  • Explanatory drawing which shows an automatic vapor release mechanism seeing from the 1st film side.
  • FIG. 3 is an explanatory diagram showing the automatic steam venting mechanism as viewed from the second film side opposite to FIG. 2 ;
  • Explanatory drawing which shows the state of the automatic steam vent mechanism at the time of pouch heating.
  • Explanatory drawing explaining the dimension of each part.
  • the photograph which shows a state that the pouch which formed the sealing part for control was heated.
  • Explanatory drawing which shows the automatic steam vent mechanism which concerns on 2nd Embodiment.
  • Explanatory drawing which shows the modification of an automatic vapor release mechanism.
  • Explanatory drawing which shows the conventional automatic steam vent mechanism.
  • microwave pouch 10 according to the first embodiment of the present invention will be described below with reference to the drawings.
  • the pouch 10 is formed by forming a bag-making seal portion 13 by thermally bonding the first and second films 11 and 12 (and the gusset portion film) at predetermined locations. It is formed in a shape, and accommodates contents such as food in the contents accommodating portion 14 inside thereof.
  • the aspect of the pouch 10 according to the present embodiment will be described.
  • the gusset film (not shown) is placed between the first and second films 11 and 12 at the bottom of the pouch 10, and the first and second films 11 are placed at both sides and the bottom of the pouch 10.
  • 12 or between the first and second films 11, 12 and the gusset film (not shown) the bag-making seal portions 13 (side seal portions 13a, 13b, bottom seal portion 13c)
  • the side seal portions 13a and 13b are provided with two cut-like notches 15 for opening the pouch 10, one above and one facing the vapor release seal portion 30, which will be described later. ing.
  • the pouch 10 is provided with an automatic steam release mechanism 20 for automatically releasing the steam inside the pouch 10 to the outside during heating.
  • the automatic steam release mechanism 20 is formed by heat-sealing the first and second films 11 and 12 which are stacked, and isolates the steam release portion 40 inside thereof from the content storage portion 14. slits 50 formed in the first film 11 at the steam releasing portion 40; and flap pieces 60 formed in the first film 11 and partitioned by the slits 50.
  • the steam releasing seal portion 30 is formed inside the bag-making seal portion 13 so as to be continuous with the bag-making seal portion 13 (side seal portion 13a).
  • the steam release seal portion 30 is a seal peeling start portion that starts peeling (so that the outer peripheral side and the inner peripheral side of the steam release seal portion 30 communicate) by the steam generated in the contents accommodating portion 14 during heating in the microwave oven. 31, and in this embodiment, as shown in FIGS. become.
  • the steam release portion 40 is a portion isolated from the contents accommodating portion 14 by forming the steam release seal portion 30.
  • the steam release portion 40 is surrounded by: It is surrounded by the steam releasing seal portion 30 and the bag-making seal portion 13 (side seal portion 13a thereof).
  • the slit 50 is formed by penetrating the first film 11 in the film thickness direction. Approximately arcuate (substantially C-shaped or substantially U-shaped) that is formed toward a nearer region (the side closer to the seal peeling start portion 31 than the imaginary line passing through the pair of slit end portions 51) and connects the slit end portions 51 , and a slit intermediate portion 52 .
  • the slit is arranged such that a virtual line connecting both ends 51 of the slit extends along the vertical direction of the microwave pouch 10 (vertical direction in FIG. 1) (parallel to the side seal portion 13a). The positions of both ends 51 are defined.
  • the second film 12 is not formed with slits at the vapor release portion 40 .
  • the flap piece 60 is a portion partially separated from the peripheral portion of the first film 11 in the vapor release portion 40 by forming the slit 50 .
  • the flap piece 60 has a connection portion 61 connected to the peripheral portion of the first film 11 at a position far from the seal peeling start portion 31 on the outer peripheral edge.
  • the automatic steam release mechanism 20 includes an unsealed portion 41 formed to cover the entire circumference of the slit 50 in the steam release portion 40, and one flap piece 60 formed in the first film 11. and a control seal portion 70 thermally welded to the second film 12 .
  • the unsealed portion 41 is a portion where the stacked first and second films 11 and 12 are not welded, and as shown in FIG. It is formed so as to entirely cover (cover) the entire periphery of the 50 .
  • the unsealed portion 41 is formed over the entire area of the steam release portion 40 excluding the portion where the control seal portion 70 is formed.
  • the control seal portion 70 is a portion where the superimposed first and second films 11 and 12 are welded, and as shown in FIG.
  • the flap piece 60 is formed continuously with the bag-making seal portion 13 (side seal portion 13a) so as to protrude toward , and a portion of the flap piece 60 is thermally welded to the second film 12 at a portion (tip portion) thereof. ing.
  • the effect of the control seal portion 70 (that is, the effect of preventing separation between the first and second films 11 and 12 by the control seal portion 70 to ensure a reliable and large opening in the slit 50) is improved. From the viewpoint of performance, as shown in FIG. In the lateral direction of the pouch 10), it is preferable to set the distance ⁇ between the control seal portion 70 and the portion of the slit 50 that is located closest to the inner side of the pouch (apex portion) to 4 mm or less, and It is more preferable to set the distance ⁇ to 3 mm or less.
  • the distance ⁇ between the steam release seal portion 30 and the portion of the slit 50 that is located furthest inside the pouch in the above direction (apex portion) is set to 4 mm or less. is preferable, and it is more preferable to set the distance ⁇ to 3 mm or less.
  • the distance ⁇ between the both end portions 51 of the slit is 5 mm or more, as shown in FIG. It is more preferable to set the following.
  • the internal pressure of the pouch 10 increases due to the thermal expansion of the steam generated from the contents such as food and the internal air, and the internal pressure of the pouch 10 rises radially from the center C (see FIG. 1) of the contents storage section 14. will be empowered.
  • the force that spreads radially causes the vapor release seal portion 30 to start peeling from near the center C of the contents accommodating portion 14 (seal peel start portion 31). It advances in a direction away from the center C of the contents-accommodating portion 14 .
  • the unsealed portion 41 of the steam release portion 40 also peels away from the center C of the contents accommodating portion 14 . That is, in the unsealed portion 41 of the steam release portion 40, the first and second films 11 and 12 are in close contact with each other before the peeling of the steam release seal portion 30 starts. After the peeling of 30 is started, the peeling progresses in the direction away from the center C of the content-accommodating portion 14 due to the radially spreading force described above.
  • the internal pressure inside the pouch 10 causes the first and second films 11 and 12 to separate.
  • the first and second films 11 are separated by the control seal portion 70 . , 12 are prevented from being separated from each other, the first film 11 in the A region and the first film 11 in the B region are greatly separated from each other in the front and back direction of the pouch with the slit 50 as a boundary, and as a result, as shown in FIG.
  • FIG. 7 shows a case where a pouch without the control seal portion 70 as shown in FIG. An example case is shown. As shown in FIG. 7, if the opening of the slit 150 cannot be sufficiently large, a sufficient amount of steam discharge cannot be ensured. For this reason, the internal pressure of the pouch after steam release tends to be higher than 1.10 kgf/cm 2 or less, increasing the risk of bag breakage.
  • the unsealed portion 41 is formed so as to cover the entire periphery of the slit 50, the first, The space between the second films 11 and 12 can be reliably separated.
  • FIG. 8(a) is an explanatory view showing the pouch 10 according to the second embodiment as viewed from the first film 11 side
  • FIG. 2 is an explanatory diagram showing the pouch 10 as viewed from the film 12 side.
  • the slits 50 are formed only in the first film 11 and the slits are formed in the second film 12 in the vapor release portion 40.
  • slits (second slits 53) are also formed in the second film 12 in the vapor release portion 40, as shown in FIG.
  • the second film 12 is formed in the first film 11 so as to completely overlap the slits 50 formed in the first film 11 in the front-back direction.
  • a second slit 53 having the same shape and position as the slit 50 is formed.
  • the second slit 53 formed in the second film 12 is formed by penetrating the second film 12 in the film thickness direction in the same manner as the slit 50 formed in the first film 11.
  • FIG. As shown in (b), both slit ends 54 and a substantially arc-shaped (substantially C-shaped or substantially U-shaped slit intermediate portion 55 .
  • a second flap piece 62 is also formed on the second film 12 as shown in FIG. 8(b).
  • the second flap piece 62 is a portion partially separated from the peripheral portion of the second film 12 in the vapor releasing portion 40 by forming the second slit 53.
  • a connection portion 63 connected to the peripheral portion of the second film 12 is provided at a position far from the seal peeling start portion 31 in the peripheral edge.
  • a portion of the flap piece 60 formed on the first film 11 is thermally welded to a portion of the second flap piece 62 formed on the second film 12 by the control seal portion 70 . .
  • the second slit 53 is also formed in the second film 12, so that the pouch 10 can be placed in the microwave oven with the first film 11 side down. Even if the steam cannot be emitted only from the slit 50 formed in the first film 11, such as when installed in the second film 11, the steam can be discharged from the second slit 53 formed in the second film 12. is possible, the reliability of steam discharge can be improved. Moreover, compared to the case where the slits 50 are formed only in the first film 11, the slits 50 and 53 can be formed at once after the first film 11 and the second film 12 are welded to form the vapor release seal portion 30. Therefore, the slits 50 and 53 can be reliably arranged at predetermined positions in the steam release seal portion 30 .
  • the pouch 10 may be configured by arbitrarily combining the configurations of the above-described multiple embodiments and modifications.
  • specific aspects of each film (first and second films 11 and 12, gusset film) constituting the pouch 10 include synthetic resin films such as polyester, polypropylene, and polyamide, and these synthetic resin films. If it is formed by laminating a known synthetic resin film such as a coating film or vapor deposition film imparted with gas barrier properties or moisture barrier properties, or by laminating paper or aluminum foil on the synthetic resin film. , can be anything. Further, in the above-described embodiment, the pouch 10 was described as being formed as a so-called standing pouch.
  • any material such as a pouch without a gusset film between the first and second films 11 and 12 may be used.
  • the first and second films 11 and 12 are formed integrally as one film, but the first and second films 11 and 12 are formed separately.
  • the content of the pouch 10 is described as food, but the specific aspect of the content is not limited to food.
  • the steam release seal portion 30 is formed continuously with (the side seal portion 13a of) the bag-making seal portion 13, but a specific aspect of the steam release seal portion 30 is described. is not limited to the above, and may be formed independently inside the bag-making seal portion 13 as shown in FIG. 9(a).
  • each portion of the steam release seal portion 30 is formed with a strong seal portion and a weak seal portion having different peeling resistances. The resistance performance against communication between the outer peripheral side and the inner peripheral side of the steam release seal portion 30 by the strength of the seal peeling start portion that starts peeling due to the steam generated in the content housing portion 14 during microwave oven heating. 31 may be adjusted.
  • control seal portion 70 is formed continuously with the bag-making seal portion 13, but the specific aspect of the control seal portion 70 is not limited to the above.
  • control seal portion 70 may be formed as a point seal by heat-sealing a portion of the flap piece 60 to the second film 12 at a position independent of the bag-making seal portion 13. good.
  • the slit middle portion 52 of the slit 50 has been described as being formed in a substantially arc shape (substantially C-shaped or substantially U-shaped). Any shape may be used as long as it is formed toward a region nearer than 31 and connects both ends 51 of the slit. may Further, in the above-described embodiment, the slit 50 is described as being a linear cut (a cut that does not have a width), but the specific aspect of the slit 50 is not limited to this, and a predetermined width ( The slit 50 may be formed to have a width in a direction orthogonal to the extending direction of the slit 50 .

Abstract

Provided is a pouch for microwave oven use that is capable of reliably and largely ensuring an opening in a slit when a microwave oven is heated. Provided is a pouch (10) for microwave oven use in which an automatic steam-releasing mechanism (20) has a steam-releasing seal part (30), a slit (50), and a flap piece (41), the slit (50) is constituted by a slit intermediate part (52) formed toward a region closer to a seal releasing start part (31) than slit both ends (51), and the automatic steam-releasing mechanism (20) further has an unsealed part (41) formed to cover the entire circumference of the slit (50), and a control seal (70) obtained by thermally welding a part of the flap piece (41) to a second film (12).

Description

電子レンジ用パウチmicrowave pouch
　本発明は、加熱時に内部の蒸気を自動的に逃がす自動蒸気抜き機構を備えた電子レンジ用パウチに関する。 The present invention relates to a pouch for microwave ovens equipped with an automatic steam release mechanism that automatically releases steam inside during heating.
　従来、重ねたフィルムを熱接着することにより袋状に成形されたパウチ内に、調理済あるいは半調理済の食品を収容し、当該食品を食べる時に、電子レンジによって加熱調理する包装食品が市場に出回っている。 Conventionally, there is a packaged food on the market that contains cooked or semi-cooked food in a pouch that is formed into a bag shape by thermally adhering stacked films, and cooks the food in a microwave oven when the food is eaten. It's out.
　このようなパウチでは、電子レンジで加熱すると、食品から発生する蒸気や内部空気の熱膨張によりパウチの内圧が高まり、パウチに破袋や変形が生じたり、また、破袋によりパウチ内の食品が飛散する恐れがある。 When such pouches are heated in a microwave oven, the steam generated from the food and the thermal expansion of the internal air increase the internal pressure of the pouch, causing the pouch to break or deform. There is a risk of scattering.
　そのため、近年、電子レンジ用のパウチには、加熱時に内部の蒸気を自動的に逃がす自動蒸気抜き機構が一般的に設けることが知られており（例えば、特許文献１を参照）、このような自動蒸気抜き機構の一態様として、図１０に示すように、重ねたフィルム１１１、１１２を熱溶着して形成されその内側の蒸気開放部１４０を内容物収容部１１４から隔離する蒸気抜きシール部１３０と、蒸気開放部１４０において第１フィルム１１１に貫通形成されたスリット１５０とを備えたものが知られている。 Therefore, in recent years, it is known that pouches for microwave ovens are generally provided with an automatic steam release mechanism that automatically releases steam inside during heating (see, for example, Patent Document 1). As one aspect of the automatic steam release mechanism, as shown in FIG. 10, a steam release seal portion 130 which is formed by heat-sealing the stacked films 111 and 112 and isolates a steam release portion 140 inside thereof from the content storage portion 114. and a slit 150 penetrating through the first film 111 at the vapor release portion 140 .
　この図１０に示す自動蒸気抜き機構１２０では、電子レンジによる加熱に伴って内容物収容部１１４内の圧力が高まると、蒸気抜きシール部１３０の一部が剥離して内容物収容部１１４と蒸気開放部１４０とが連通し、スリット１５０を通じて、内容物収容部１１４内の蒸気が外部へ排出される。 In the automatic steam venting mechanism 120 shown in FIG. 10, when the pressure inside the content accommodating portion 114 increases due to heating by the microwave oven, a portion of the steam venting seal portion 130 is peeled off to separate the content accommodating portion 114 from the steam. The open portion 140 communicates with the opening portion 140 , and the steam in the contents accommodating portion 114 is discharged to the outside through the slit 150 .
特開２００３－１９２０４２号公報Japanese Patent Application Laid-Open No. 2003-192042
　ところが、図１０に示す自動蒸気抜き機構１２０では、加熱時におけるパウチの膨張具合によっては、スリット１５０において充分な大きさの開きが確保できない場合があり、このようにスリット１５０における開きが小さい場合には、蒸気の排出量を充分に確保できないため、蒸気によるパウチの膨張状態が長く維持され、パウチの内面材の熱損傷等に起因したパウチの穴あき現象が生じてしまう等の虞があった。 However, with the automatic steam venting mechanism 120 shown in FIG. 10, depending on the degree of expansion of the pouch during heating, it may not be possible to ensure a sufficiently large opening at the slit 150. However, since a sufficient amount of steam cannot be discharged, the expansion of the pouch due to the steam is maintained for a long time, and there is a risk that the pouch will be perforated due to thermal damage to the inner surface material of the pouch. .
　そこで、本発明は、これらの問題点を解決するものであり、簡素な構造で、レンジ加熱時にスリットにおける開口を確実かつ大きく確保することが可能な電子レンジ用パウチを提供することを目的とするものである。 Therefore, the present invention is intended to solve these problems, and it is an object of the present invention to provide a microwave oven pouch that has a simple structure and can ensure a large opening in the slit during microwave heating. It is.
　本発明は、自動蒸気抜き機構を備えた電子レンジ用パウチであって、前記自動蒸気抜き機構は、重ねた第１フィルムおよび第２フィルムを熱溶着して形成されその内側の蒸気開放部を内容物収容部から隔離する蒸気抜きシール部と、前記蒸気開放部において前記第１フィルムに形成されたスリットと、前記第１フィルムに形成され前記スリットによって区画されたフラップ片とを有し、前記蒸気抜きシール部は、加熱時に前記内容物収容部内に発生する蒸気によって剥離を開始するシール剥離開始部を有し、前記スリットは、スリット両端部と、前記スリット両端部よりも前記シール剥離開始部に近い領域に向かって形成され、前記スリット両端部を繋ぐスリット中間部とから構成され、前記自動蒸気抜き機構は、前記スリットの全周を覆うように形成された、前記第１フィルムおよび前記第２フィルムを溶着していない未シール部と、前記第１フィルムに形成された前記フラップ片の一部を前記第２フィルムに熱溶着した制御用シール部とを更に有することにより、前記課題を解決するものである。 The present invention is a pouch for a microwave oven provided with an automatic steam venting mechanism, wherein the automatic steam venting mechanism is formed by heat-sealing a first film and a second film that are superimposed, and includes a steam releasing portion inside the first film and the second film. a vapor release seal portion isolated from an article containing portion; a slit formed in the first film at the vapor release portion; and a flap piece formed in the first film and partitioned by the slit; The extraction seal portion has a seal peeling start portion that starts peeling due to steam generated in the content storage portion during heating, and the slit is provided at both ends of the slit and at the seal peeling start portion rather than at both ends of the slit. and a slit intermediate portion formed toward a nearer region and connecting both ends of the slit. The problem is solved by further including an unsealed portion to which no film is welded, and a control seal portion in which a part of the flap piece formed on the first film is heat-sealed to the second film. It is.
　本発明によれば、自動蒸気抜き機構が、スリットの全周を覆うように形成された未シール部と、第１フィルムに形成されたフラップ片の一部を第２フィルムに熱溶着した制御用シール部とを有していることにより、電子レンジによるパウチ加熱時において、蒸気抜きシール部が剥離して内容物収容部と蒸気開放部とが連通した時に、スリットよりもシール剥離開始部に近い側においては、パウチ内圧の上昇によって第１、第２フィルム間が離れようとするのに対して、スリットよりもシール剥離開始部から遠い側であるフラップ片が形成された領域においては、制御用シール部によって第１、第２フィルム間が離れることが阻止されるため、スリットにおける開口を確実かつ大きく確保することができ、蒸気の排出を良好に行うことができる。
　また、スリットの全周を覆うように未シール部が形成されていることにより、スリットよりもシール剥離開始部に近い側において、パウチ内圧の上昇によって第１、第２フィルム間を確実に離れさせることができる。 According to the present invention, the automatic vapor venting mechanism includes an unsealed portion formed so as to cover the entire circumference of the slit and a portion of the flap piece formed on the first film, which is heat-sealed to the second film for control. By having the seal part, when the steam release seal part is peeled off and the content storage part and the steam release part are communicated when the pouch is heated by the microwave oven, it is closer to the seal peeling start part than the slit. On the side, the first and second films tend to separate due to the increase in the internal pressure of the pouch, whereas in the region where the flap piece is formed, which is the side farther from the seal peeling start part than the slit, the control Since the first and second films are prevented from being separated by the sealing portion, the opening in the slit can be ensured to be large and reliable, and the vapor can be discharged satisfactorily.
In addition, since the unsealed portion is formed so as to cover the entire periphery of the slit, the first and second films are reliably separated from each other by an increase in the internal pressure of the pouch on the side closer to the seal peeling start portion than the slit. be able to.
本発明の第１実施形態に係る電子レンジ用パウチを示す説明図。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing the microwave pouch according to the first embodiment of the present invention; 第１フィルム側から見て自動蒸気抜き機構を示す説明図。Explanatory drawing which shows an automatic vapor release mechanism seeing from the 1st film side. 図２とは反対側の第２フィルム側から見て自動蒸気抜き機構を示す説明図。FIG. 3 is an explanatory diagram showing the automatic steam venting mechanism as viewed from the second film side opposite to FIG. 2 ; パウチ加熱時における自動蒸気抜き機構の様子を示す説明図。Explanatory drawing which shows the state of the automatic steam vent mechanism at the time of pouch heating. 各部の寸法を説明する説明図。Explanatory drawing explaining the dimension of each part. 制御用シール部を形成したパウチを加熱した様子を示す写真。The photograph which shows a state that the pouch which formed the sealing part for control was heated. 制御用シール部を形成していないパウチを加熱した様子を示す写真。A photograph showing a state in which a pouch without a control sealing portion is heated. 第２実施形態に係る自動蒸気抜き機構を示す説明図。Explanatory drawing which shows the automatic steam vent mechanism which concerns on 2nd Embodiment. 自動蒸気抜き機構の変形例を示す説明図。Explanatory drawing which shows the modification of an automatic vapor release mechanism. 従来の自動蒸気抜き機構を示す説明図。Explanatory drawing which shows the conventional automatic steam vent mechanism.
　以下に、本発明の第１実施形態に係る電子レンジ用パウチ１０について、図面に基づいて説明する。 The microwave pouch 10 according to the first embodiment of the present invention will be described below with reference to the drawings.
　まず、パウチ１０は、図１に示すように、重ねた第１、第２フィルム１１、１２（およびマチ部用フィルム）を所定箇所で熱接着した製袋用シール部１３を形成することにより袋状に形成され、その内側の内容物収容部１４に食品等の内容物を収容するものである。 First, as shown in FIG. 1, the pouch 10 is formed by forming a bag-making seal portion 13 by thermally bonding the first and second films 11 and 12 (and the gusset portion film) at predetermined locations. It is formed in a shape, and accommodates contents such as food in the contents accommodating portion 14 inside thereof.
　本実施形態におけるパウチ１０の態様について具体的に説明すると、図１に示すように、パウチ１０は、１枚のフィルムとして連続して形成された第１、第２フィルム１１、１２をパウチ１０の頂部において二つ折りし、パウチ１０の底部において第１、第２フィルム１１、１２の間にマチ部用フィルム（図示しない）を配置し、パウチ１０の両側部および底部において第１、第２フィルム１１、１２間または第１、第２フィルム１１、１２およびマチ部用フィルム（図示しない）の間を熱溶着することで、製袋用シール部１３（サイドシール部１３ａ、１３ｂ、ボトムシール部１３ｃ）を形成することにより、袋状に形成された所謂スタンディングパウチとして構成されている。
　サイドシール部１３ａ、１３ｂには、図１に示すように、パウチ１０を開封するための切り込み状のノッチ１５が、後述する蒸気抜きシール部３０の上方およびそれと対面する位置の２箇所に形成されている。 Specifically, the aspect of the pouch 10 according to the present embodiment will be described. As shown in FIG. The top is folded in half, the gusset film (not shown) is placed between the first and second films 11 and 12 at the bottom of the pouch 10, and the first and second films 11 are placed at both sides and the bottom of the pouch 10. , 12 or between the first and second films 11, 12 and the gusset film (not shown), the bag-making seal portions 13 ( side seal portions 13a, 13b, bottom seal portion 13c) By forming, it is configured as a so-called standing pouch formed in a bag shape.
As shown in FIG. 1, the side seal portions 13a and 13b are provided with two cut-like notches 15 for opening the pouch 10, one above and one facing the vapor release seal portion 30, which will be described later. ing.
　パウチ１０には、加熱時にパウチ１０内の蒸気を自動的に外部に逃がすための自動蒸気抜き機構２０が設けられている。 The pouch 10 is provided with an automatic steam release mechanism 20 for automatically releasing the steam inside the pouch 10 to the outside during heating.
　自動蒸気抜き機構２０は、図１や図２に示すように、重ねた第１、第２フィルム１１、１２を熱溶着して形成されその内側の蒸気開放部４０を内容物収容部１４から隔離する蒸気抜きシール部３０と、蒸気開放部４０において第１フィルム１１に形成されたスリット５０と、第１フィルム１１に形成されスリット５０によって区画されたフラップ片６０とを有している。 As shown in FIGS. 1 and 2, the automatic steam release mechanism 20 is formed by heat-sealing the first and second films 11 and 12 which are stacked, and isolates the steam release portion 40 inside thereof from the content storage portion 14. slits 50 formed in the first film 11 at the steam releasing portion 40; and flap pieces 60 formed in the first film 11 and partitioned by the slits 50.
　以下に、自動蒸気抜き機構２０の各構成要素について、図２に基づいて説明する。 Each component of the automatic steam venting mechanism 20 will be described below with reference to FIG.
　まず、蒸気抜きシール部３０は、図２に示すように、製袋用シール部１３の内側において、製袋用シール部１３（サイドシール部１３ａ）に連続して形成されている。
　蒸気抜きシール部３０は、電子レンジ加熱時に内容物収容部１４内に発生する蒸気によって（蒸気抜きシール部３０の外周側と内周側とが連通するように）剥離を開始するシール剥離開始部３１を有し、本実施形態では、図１や図２に示すように、シール剥離開始部３１は、環状の蒸気抜きシール部３０のうち、内容物収容部１４の中央Ｃに最も近い部位になる。 First, as shown in FIG. 2, the steam releasing seal portion 30 is formed inside the bag-making seal portion 13 so as to be continuous with the bag-making seal portion 13 (side seal portion 13a).
The steam release seal portion 30 is a seal peeling start portion that starts peeling (so that the outer peripheral side and the inner peripheral side of the steam release seal portion 30 communicate) by the steam generated in the contents accommodating portion 14 during heating in the microwave oven. 31, and in this embodiment, as shown in FIGS. Become.
　蒸気開放部４０は、図２に示すように、蒸気抜きシール部３０を形成することにより、内容物収容部１４から隔離された部位であり、本実施形態では、蒸気開放部４０の周囲は、蒸気抜きシール部３０および製袋用シール部１３（のサイドシール部１３ａ）によって囲まれている。 As shown in FIG. 2, the steam release portion 40 is a portion isolated from the contents accommodating portion 14 by forming the steam release seal portion 30. In the present embodiment, the steam release portion 40 is surrounded by: It is surrounded by the steam releasing seal portion 30 and the bag-making seal portion 13 (side seal portion 13a thereof).
　スリット５０は、図２に示すように、第１フィルム１１をフィルム厚み方向に貫通して形成されたものであり、一対のスリット両端部５１と、スリット両端部５１よりもシール剥離開始部３１に近い領域（一対のスリット両端部５１を通る仮想線よりもシール剥離開始部３１に近い側）に向かって形成され、スリット両端部５１を繋ぐ略円弧状（略Ｃ字状または略Ｕ字状）のスリット中間部５２とから構成されている。
　なお、本実施形態では、スリット両端部５１を結んだ仮想線が、電子レンジ用パウチ１０の縦方向（図１の上下方向）に沿って（サイドシール部１３ａに平行に）延びるように、スリット両端部５１の位置が定められている。
　また、第１実施形態においては、図３に示すように、第２フィルム１２には、蒸気開放部４０においてスリットが形成されていない。 As shown in FIG. 2, the slit 50 is formed by penetrating the first film 11 in the film thickness direction. Approximately arcuate (substantially C-shaped or substantially U-shaped) that is formed toward a nearer region (the side closer to the seal peeling start portion 31 than the imaginary line passing through the pair of slit end portions 51) and connects the slit end portions 51 , and a slit intermediate portion 52 .
In the present embodiment, the slit is arranged such that a virtual line connecting both ends 51 of the slit extends along the vertical direction of the microwave pouch 10 (vertical direction in FIG. 1) (parallel to the side seal portion 13a). The positions of both ends 51 are defined.
In addition, in the first embodiment, as shown in FIG. 3, the second film 12 is not formed with slits at the vapor release portion 40 .
　フラップ片６０は、図２に示すように、スリット５０を形成することによって蒸気開放部４０において第１フィルム１１の周辺部位から部分的に分離された部位である。
　フラップ片６０は、その外周縁のうちシール剥離開始部３１から遠い位置に、第１フィルム１１の周辺部位に接続される接続部６１を有している。 As shown in FIG. 2 , the flap piece 60 is a portion partially separated from the peripheral portion of the first film 11 in the vapor release portion 40 by forming the slit 50 .
The flap piece 60 has a connection portion 61 connected to the peripheral portion of the first film 11 at a position far from the seal peeling start portion 31 on the outer peripheral edge.
　自動蒸気抜き機構２０は、図２に示すように、蒸気開放部４０においてスリット５０の全周を覆うように形成された未シール部４１と、第１フィルム１１に形成されたフラップ片６０の一部を第２フィルム１２に熱溶着した制御用シール部７０とを更に有している。 As shown in FIG. 2, the automatic steam release mechanism 20 includes an unsealed portion 41 formed to cover the entire circumference of the slit 50 in the steam release portion 40, and one flap piece 60 formed in the first film 11. and a control seal portion 70 thermally welded to the second film 12 .
　未シール部４１は、重ねた第１、第２フィルム１１、１２を溶着していない部位であり、図２に示すように、電子レンジ用パウチ１０を平面視した場合に、パウチ平面方向におけるスリット５０の全周を全面的に覆う（カバーする）ように形成されている。
　本実施形態では、未シール部４１は、制御用シール部７０の形成箇所を除いた蒸気開放部４０の全域に亘って形成されている。 The unsealed portion 41 is a portion where the stacked first and second films 11 and 12 are not welded, and as shown in FIG. It is formed so as to entirely cover (cover) the entire periphery of the 50 .
In this embodiment, the unsealed portion 41 is formed over the entire area of the steam release portion 40 excluding the portion where the control seal portion 70 is formed.
　制御用シール部７０は、重ねた第１、第２フィルム１１、１２を溶着した部位であり、図２に示すように、製袋用シール部１３（サイドシール部１３ａ）から横方向にパウチ内側に向けて突出するように、製袋用シール部１３（サイドシール部１３ａ）に連続して形成され、その一部（先端部）においてフラップ片６０の一部を第２フィルム１２に熱溶着している。 The control seal portion 70 is a portion where the superimposed first and second films 11 and 12 are welded, and as shown in FIG. The flap piece 60 is formed continuously with the bag-making seal portion 13 (side seal portion 13a) so as to protrude toward , and a portion of the flap piece 60 is thermally welded to the second film 12 at a portion (tip portion) thereof. ing.
　次に、各部の寸法設定については、以下の通りである。 Next, the dimension settings for each part are as follows.
　まず、制御用シール部７０による効果（すなわち、制御用シール部７０によって第１、第２フィルム１１、１２間が離れることを阻止してスリット５０における開口を確実かつ大きく確保する効果）を良好に発揮する観点から、図５に示すように、スリット両端部５１を結んだ仮想線（言い替えると接続部６１が延びる方向）に直交する方向（図１や図５に示す例の場合、電子レンジ用パウチ１０の横方向）における、スリット５０のうち前記方向において最もパウチ内側に位置する箇所（頂点箇所）と制御用シール部７０との間の距離γを４ｍｍ以下に設定するのが好ましく、また、距離γを３ｍｍ以下に設定するのが更に好ましい。 First, the effect of the control seal portion 70 (that is, the effect of preventing separation between the first and second films 11 and 12 by the control seal portion 70 to ensure a reliable and large opening in the slit 50) is improved. From the viewpoint of performance, as shown in FIG. In the lateral direction of the pouch 10), it is preferable to set the distance γ between the control seal portion 70 and the portion of the slit 50 that is located closest to the inner side of the pouch (apex portion) to 4 mm or less, and It is more preferable to set the distance γ to 3 mm or less.
　また、パウチ加熱時において蒸気抜きシール部３０が剥離した時に、蒸気抜きシール部３０の剥離箇所とスリット５０との間に形成された蒸気の通り道が再度塞がってしまうことを抑制して蒸気を良好に抜く観点から、図５に示すように、スリット両端部５１を結んだ仮想線（言い替えると接続部６１が延びる方向）に直交する方向（図１や図５に示す例の場合、電子レンジ用パウチ１０の横方向、図面の左右方向）における、スリット５０のうち前記方向において最もパウチ内側に位置する箇所（頂点箇所）と蒸気抜きシール部３０との間の距離βを４ｍｍ以下に設定するのが好ましく、また、距離βを３ｍｍ以下に設定するのが更に好ましい。 In addition, when the steam release seal portion 30 is peeled off during heating of the pouch, the passage of steam formed between the peeled portion of the steam release seal portion 30 and the slit 50 is prevented from being clogged again, and the steam is released well. From the viewpoint of extraction, as shown in FIG. In the horizontal direction of the pouch 10, the left-right direction of the drawing), the distance β between the steam release seal portion 30 and the portion of the slit 50 that is located furthest inside the pouch in the above direction (apex portion) is set to 4 mm or less. is preferable, and it is more preferable to set the distance β to 3 mm or less.
　また、パウチ加熱時においてスリット５０における開口を大きく確保する観点から、図５に示すように、スリット両端部５１間の距離σを５ｍｍ以上に設定するのが好ましく、また、距離σを７～１０ｍｍ以下に設定するのが更に好ましい。 In addition, from the viewpoint of ensuring a large opening in the slit 50 during pouch heating, it is preferable to set the distance σ between the both end portions 51 of the slit to 5 mm or more, as shown in FIG. It is more preferable to set the following.
　つぎに、本実施形態のパウチ１０を加熱した際の各部の様子について以下に説明する。 Next, the state of each part when the pouch 10 of the present embodiment is heated will be described below.
　まず、電子レンジによってパウチ１０を加熱すると、食品等の内容物から発生する蒸気や内部空気の熱膨張により、パウチ１０の内圧が高まり、内容物収容部１４の中央Ｃ（図1参照）から放射状に力が与えられることになる。 First, when the pouch 10 is heated by a microwave oven, the internal pressure of the pouch 10 increases due to the thermal expansion of the steam generated from the contents such as food and the internal air, and the internal pressure of the pouch 10 rises radially from the center C (see FIG. 1) of the contents storage section 14. will be empowered.
　次に、放射状に広がる力によって、内容物収容部１４の中央Ｃから近い箇所（シール剥離開始部３１）付近から蒸気抜きシール部３０が剥離を開始し、この蒸気抜きシール部３０の剥離は、内容物収容部１４の中央Ｃから遠ざかる方向に進行する。 Next, the force that spreads radially causes the vapor release seal portion 30 to start peeling from near the center C of the contents accommodating portion 14 (seal peel start portion 31). It advances in a direction away from the center C of the contents-accommodating portion 14 .
　また、蒸気抜きシール部３０の剥離が進行すると、蒸気開放部４０の未シール部４１についても同様に、内容物収容部１４の中央Ｃから遠ざかる方向に剥離が進行する。
　すなわち、蒸気開放部４０の未シール部４１において、第１、第２フィルム１１、１２は、蒸気抜きシール部３０の剥離開始前には、互いに密着した状態となっているが、蒸気抜きシール部３０の剥離開始後には、上述した放射状に広がる力によって、内容物収容部１４の中央Ｃから遠ざかる方向に剥離が進行する。 In addition, as the peeling of the steam release seal portion 30 progresses, the unsealed portion 41 of the steam release portion 40 also peels away from the center C of the contents accommodating portion 14 .
That is, in the unsealed portion 41 of the steam release portion 40, the first and second films 11 and 12 are in close contact with each other before the peeling of the steam release seal portion 30 starts. After the peeling of 30 is started, the peeling progresses in the direction away from the center C of the content-accommodating portion 14 due to the radially spreading force described above.
　次に、蒸気抜きシール部３０および未シール部４１における第１、第２フィルム１１、１２間の剥離がスリット５０の位置まで到達すると、スリット５０を通じて内容物収容部１４内の蒸気がパウチ１０外に放出されることになる。 Next, when the peeling between the first and second films 11 and 12 at the steam releasing sealed portion 30 and the unsealed portion 41 reaches the position of the slit 50 , the steam in the contents accommodating portion 14 is released from the pouch 10 through the slit 50 . will be released to
　この時、スリット５０よりもシール剥離開始部３１に近い側（図４に示すＡ領域）においては、パウチ１０内の内圧によって、第１、第２フィルム１１、１２間が離れようとするのに対して、スリット５０よりもシール剥離開始部３１から遠い側であるフラップ片６０が形成された領域（図４に示すＢ領域）においては、制御用シール部７０によって、第１、第２フィルム１１、１２間が離れることが阻止されるため、スリット５０を境としてＡ領域の第１フィルム１１とＢ領域の第１フィルム１１とがパウチ表裏方向に大きく離れ、その結果、図６に示すように、スリット５０において開口を大きく確保することができ、蒸気の排出量を充分に確保できる。このため、パウチを電子レンジ加熱し、パウチから蒸気が抜け始めた後（蒸気開放後）のパウチ内圧を１．１０ｋｇｆ／ｃｍ２以下という低い内圧を保つことができ、破袋の虞がなくなる。
　なお、図７には、比較例として、図１０に示すような制御用シール部７０が形成されていないパウチを加熱した場合であって、スリット１５０において充分な大きさの開きが確保できなかった場合の例を示した。図７に示すようにスリット１５０において充分な大きさの開きが確保できない場合、蒸気の排出量を充分に確保できないことになる。このため、蒸気開放後のパウチ内圧が１．１０ｋｇｆ／ｃｍ２以下より高くなる傾向にあり、破袋の虞が増す。 At this time, on the side closer to the seal peeling start portion 31 than the slit 50 (area A shown in FIG. 4), the internal pressure inside the pouch 10 causes the first and second films 11 and 12 to separate. On the other hand, in the area where the flap piece 60 is formed (area B shown in FIG. 4 ), which is the side farther from the seal peeling start portion 31 than the slit 50 , the first and second films 11 are separated by the control seal portion 70 . , 12 are prevented from being separated from each other, the first film 11 in the A region and the first film 11 in the B region are greatly separated from each other in the front and back direction of the pouch with the slit 50 as a boundary, and as a result, as shown in FIG. , a large opening can be secured in the slit 50, and a sufficient amount of steam can be discharged. Therefore, after the pouch is heated in a microwave oven and steam begins to escape from the pouch (after the steam is released), the internal pressure of the pouch can be kept as low as 1.10 kgf/cm 2 or less, eliminating the risk of bag breakage.
As a comparative example, FIG. 7 shows a case where a pouch without the control seal portion 70 as shown in FIG. An example case is shown. As shown in FIG. 7, if the opening of the slit 150 cannot be sufficiently large, a sufficient amount of steam discharge cannot be ensured. For this reason, the internal pressure of the pouch after steam release tends to be higher than 1.10 kgf/cm 2 or less, increasing the risk of bag breakage.
　また、この時、スリット５０の全周を覆うように未シール部４１が形成されているため、スリット５０よりもシール剥離開始部３１に近い側（図４に示すＡ領域）において、第１、第２フィルム１１、１２間を確実に離れさせることができる。 Also, at this time, since the unsealed portion 41 is formed so as to cover the entire periphery of the slit 50, the first, The space between the second films 11 and 12 can be reliably separated.
　次に、本発明の第２実施形態に係る電子レンジ用パウチ１０について、図８に基づいて説明する。ここで、第２実施形態では、一部構成以外については、前述した第１実施形態と全く同じであるため、相違点以外の構成については、その説明を省略する。 Next, a microwave pouch 10 according to a second embodiment of the present invention will be described with reference to FIG. Here, since the second embodiment is exactly the same as the first embodiment described above except for a part of the configuration, the description of the configuration other than the difference will be omitted.
　なお、図８（ａ）は、第２実施形態に係るパウチ１０を第１フィルム１１側から見て示す説明図であり、図８（ｂ）は、図８（ａ）とは反対側の第２フィルム１２側から見てパウチ１０を示す説明図である。 In addition, FIG. 8(a) is an explanatory view showing the pouch 10 according to the second embodiment as viewed from the first film 11 side, and FIG. 2 is an explanatory diagram showing the pouch 10 as viewed from the film 12 side.
　まず、上述した第１実施形態においては、図２や図３に示すように、蒸気開放部４０において、スリット５０が第１フィルム１１のみに形成され、第２フィルム１２にはスリットが形成されていないものとして説明したが、第２実施形態では、図８に示すように、蒸気開放部４０において、第２フィルム１２にもスリット（第２スリット５３）が形成されている。 First, in the above-described first embodiment, as shown in FIGS. 2 and 3, the slits 50 are formed only in the first film 11 and the slits are formed in the second film 12 in the vapor release portion 40. In the second embodiment, slits (second slits 53) are also formed in the second film 12 in the vapor release portion 40, as shown in FIG.
　すなわち、第２実施形態では、図８に示すように、第２フィルム１２には、第１フィルム１１に形成されたスリット５０に表裏方向に完全に重なるように、第１フィルム１１に形成されたスリット５０と同一形状および同一位置に形成された第２スリット５３が形成されている。 That is, in the second embodiment, as shown in FIG. 8, the second film 12 is formed in the first film 11 so as to completely overlap the slits 50 formed in the first film 11 in the front-back direction. A second slit 53 having the same shape and position as the slit 50 is formed.
　この第２フィルム１２に形成された第２スリット５３は、第１フィルム１１に形成されたスリット５０と同様に、第２フィルム１２をフィルム厚み方向に貫通して形成されたものであり、図８（ｂ）に示すように、スリット両端部５４と、スリット両端部５４よりもシール剥離開始部３１に近い領域に向かって形成され、スリット両端部５４を繋ぐ略円弧状（略Ｃ字状または略Ｕ字状）のスリット中間部５５とから構成されている。 The second slit 53 formed in the second film 12 is formed by penetrating the second film 12 in the film thickness direction in the same manner as the slit 50 formed in the first film 11. FIG. As shown in (b), both slit ends 54 and a substantially arc-shaped (substantially C-shaped or substantially U-shaped slit intermediate portion 55 .
　また、第２実施形態では、第１フィルム１１に形成されたフラップ片６０と同様に、図８（ｂ）に示すように、第２フィルム１２にも、第２フラップ片６２が形成されている。
　この第２フラップ片６２は、図８（ｂ）に示すように、第２スリット５３の形成によって蒸気開放部４０において第２フィルム１２の周辺部位から部分的に分離された部位であり、その外周縁のうちシール剥離開始部３１から遠い位置に第２フィルム１２の周辺部位に接続される接続部６３を有している。
　第２実施形態では、制御用シール部７０によって、第１フィルム１１に形成されたフラップ片６０の一部が第２フィルム１２に形成された第２フラップ片６２の一部に熱溶着されている。 Further, in the second embodiment, similarly to the flap piece 60 formed on the first film 11, a second flap piece 62 is also formed on the second film 12 as shown in FIG. 8(b). .
As shown in FIG. 8(b), the second flap piece 62 is a portion partially separated from the peripheral portion of the second film 12 in the vapor releasing portion 40 by forming the second slit 53. A connection portion 63 connected to the peripheral portion of the second film 12 is provided at a position far from the seal peeling start portion 31 in the peripheral edge.
In the second embodiment, a portion of the flap piece 60 formed on the first film 11 is thermally welded to a portion of the second flap piece 62 formed on the second film 12 by the control seal portion 70 . .
　このようにして得られた第２実施形態に係るパウチ１０では、第２フィルム１２にも第２スリット５３が形成されていることにより、第１フィルム１１側を下にしてパウチ１０を電子レンジ内に設置した場合等、第１フィルム１１に形成されたスリット５０からだけで蒸気を噴出することができない場合があっても、第２フィルム１２に形成された第２スリット５３から蒸気を排出することが可能であるため、蒸気排出の確実性を向上させることができる。また、第１フィルム１１のみにスリット５０を形成する場合に比べ、第１フィルム１１と第２フィルム１２とを溶着して蒸気抜きシール部３０を形成した後にスリット５０，５３を一度に形成することができるため、蒸気抜きシール部３０内の所定の位置に確実にスリット５０，５３を配置することができる。 In the pouch 10 according to the second embodiment thus obtained, the second slit 53 is also formed in the second film 12, so that the pouch 10 can be placed in the microwave oven with the first film 11 side down. Even if the steam cannot be emitted only from the slit 50 formed in the first film 11, such as when installed in the second film 11, the steam can be discharged from the second slit 53 formed in the second film 12. is possible, the reliability of steam discharge can be improved. Moreover, compared to the case where the slits 50 are formed only in the first film 11, the slits 50 and 53 can be formed at once after the first film 11 and the second film 12 are welded to form the vapor release seal portion 30. Therefore, the slits 50 and 53 can be reliably arranged at predetermined positions in the steam release seal portion 30 .
　以上、本発明の実施形態を詳述したが、本発明は上記実施形態に限定されるものではなく、特許請求の範囲に記載された本発明を逸脱することなく種々の設計変更を行なうことが可能である。 Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the scope of the present invention described in the claims. It is possible.
　例えば、上述した複数の実施形態や変形例の各構成を、任意に組み合わせてパウチ１０を構成してもよい。
　また、パウチ１０を構成する各フィルム（第１、第２フィルム１１、１２、マチ部用フィルム）の具体的態様は、ポリエステル、ポリプロピレン、ポリアミド等の合成樹脂性フィルムや、これら合成樹脂性フィルムにガスバリア性や水分バリア性を付与したコーティングフィルム又は蒸着フィルム等の公知の合成樹脂性フィルムを積層したり、該合成樹脂製フィルムに紙またはアルミ箔を積層すること等で形成されたものであれば、如何なるものでもよい。
　また、上述した実施形態では、パウチ１０が所謂スタンディングパウチとして形成されているものとして説明したが、パウチ１０の具体的態様は、重ねて配置された第１、第２フィルム１１、１２を備えたものであれば、第１、第２フィルム１１、１２の間にマチ用フィルムを配していないパウチ等、如何なるものでもよい。
　また、上述した実施形態では、第１、第２フィルム１１、１２が１枚のフィルムとして一体に形成されているものとして説明したが、第１、第２フィルム１１、１２を別体に形成してもよい。
　また、上述した実施形態では、パウチ１０の内容物が食品であるものとして説明したが、内容物の具体的態様は、食品に限定されない。 For example, the pouch 10 may be configured by arbitrarily combining the configurations of the above-described multiple embodiments and modifications.
In addition, specific aspects of each film (first and second films 11 and 12, gusset film) constituting the pouch 10 include synthetic resin films such as polyester, polypropylene, and polyamide, and these synthetic resin films. If it is formed by laminating a known synthetic resin film such as a coating film or vapor deposition film imparted with gas barrier properties or moisture barrier properties, or by laminating paper or aluminum foil on the synthetic resin film. , can be anything.
Further, in the above-described embodiment, the pouch 10 was described as being formed as a so-called standing pouch. Any material such as a pouch without a gusset film between the first and second films 11 and 12 may be used.
Further, in the above-described embodiment, the first and second films 11 and 12 are formed integrally as one film, but the first and second films 11 and 12 are formed separately. may
Further, in the above-described embodiment, the content of the pouch 10 is described as food, but the specific aspect of the content is not limited to food.
　また、上述した実施形態では、蒸気抜きシール部３０が製袋用シール部１３（のサイドシール部１３ａ）に連続して形成されているものとして説明したが、蒸気抜きシール部３０の具体的態様は、上記に限定されず、図９（ａ）に示すように、製袋用シール部１３の内側に独立して形成してもよい。
　また、蒸気抜きシール部３０の変形例として、蒸気抜きシール部３０に耐剥離性の異なる強シール部分および弱シール部分を形成する等、蒸気抜きシール部３０の各部に耐剥離性（剥離の進行による蒸気抜きシール部３０の外周側と内周側との連通に対する抵抗性能）の強弱を付けることで、電子レンジ加熱時に内容物収容部１４内に発生する蒸気によって剥離を開始するシール剥離開始部３１の位置を調整してもよい。 Further, in the above-described embodiment, the steam release seal portion 30 is formed continuously with (the side seal portion 13a of) the bag-making seal portion 13, but a specific aspect of the steam release seal portion 30 is described. is not limited to the above, and may be formed independently inside the bag-making seal portion 13 as shown in FIG. 9(a).
In addition, as a modification of the steam release seal portion 30, each portion of the steam release seal portion 30 is formed with a strong seal portion and a weak seal portion having different peeling resistances. The resistance performance against communication between the outer peripheral side and the inner peripheral side of the steam release seal portion 30 by the strength of the seal peeling start portion that starts peeling due to the steam generated in the content housing portion 14 during microwave oven heating. 31 may be adjusted.
　また、上述した実施形態では、制御用シール部７０が製袋用シール部１３に連続して形成されているものとして説明したが、制御用シール部７０の具体的態様は、上記に限定されず、図９（ｂ）に示すように、製袋用シール部１３から独立した位置でフラップ片６０の一部を第２フィルム１２に熱溶着するポイントシールとして制御用シール部７０を形成してもよい。 In the above-described embodiment, the control seal portion 70 is formed continuously with the bag-making seal portion 13, but the specific aspect of the control seal portion 70 is not limited to the above. Alternatively, as shown in FIG. 9(b), the control seal portion 70 may be formed as a point seal by heat-sealing a portion of the flap piece 60 to the second film 12 at a position independent of the bag-making seal portion 13. good.
　また、上述した実施形態では、スリット５０のスリット中間部５２が略円弧状（略Ｃ字状または略Ｕ字状）に形成されているものとして説明したが、スリット両端部５１からシール剥離開始部３１よりも近い領域に向かって形成され、スリット両端部５１を繋ぐものであれば如何なるものでもよく、例えば、Ｖ字状やコ字状等、スリット中間部５２を複数の直線又は曲線から形成してもよい。
　また、上述した実施形態では、スリット５０が、線状の切り込み（幅を有さない切り込み）であるものとして説明したが、スリット５０の具体的態様は、これに限定されず、所定の幅（スリット５０の延在方向に直交する方向における幅）を有するように、スリット５０を形成してもよい。 Further, in the above-described embodiment, the slit middle portion 52 of the slit 50 has been described as being formed in a substantially arc shape (substantially C-shaped or substantially U-shaped). Any shape may be used as long as it is formed toward a region nearer than 31 and connects both ends 51 of the slit. may
Further, in the above-described embodiment, the slit 50 is described as being a linear cut (a cut that does not have a width), but the specific aspect of the slit 50 is not limited to this, and a predetermined width ( The slit 50 may be formed to have a width in a direction orthogonal to the extending direction of the slit 50 .
　１０　　・・・　パウチ（電子レンジ用パウチ）
　１１　　・・・　第１フィルム
　１２　　・・・　第２フィルム
　１３　　・・・　製袋用シール部
　１３ａ　・・・　サイドシール部
　１３ｂ　・・・　サイドシール部
　１３ｃ　・・・　ボトムシール部
　１４　　・・・　内容物収容部
　１５　　・・・　ノッチ
　２０　　・・・　自動蒸気抜き機構
　３０　　・・・　蒸気抜きシール部
　３１　　・・・　シール剥離開始部
　４０　　・・・　蒸気開放部
　４１　　・・・　未シール部
　５０　　・・・　スリット
　５１　　・・・　スリット両端部
　５２　　・・・　スリット中間部
　５３　　・・・　第２スリット
　５４　　・・・　スリット両端部
　５５　　・・・　スリット中間部
　６０　　・・・　フラップ片
　６１　　・・・　接続部
　６２　　・・・　第２フラップ片
　６３　　・・・　接続部
　７０　　・・・　制御用シール部
　Ｃ　・・・　内容物収容部の中央 10 Pouch (pouch for microwave oven)
DESCRIPTION OF SYMBOLS 11... 1st film 12... 2nd film 13... Seal part for bag making 13a... Side seal part 13b... Side seal part 13c... Bottom seal part 14... Contents Housing part 15... Notch 20... Automatic steam release mechanism 30... Steam release seal part 31... Seal peeling start part 40... Steam release part 41... Unsealed part 50... Slit 51... Slit both ends 52... Slit intermediate part 53... Second slit 54... Slit both ends 55... Slit intermediate part 60... Flap piece 61... Connection part 62...・Second flap piece 63 ... Connection part 70 ... Control seal part C ... Center of content storage part

Claims (3)

  1. 　自動蒸気抜き機構を備えた電子レンジ用パウチであって、
    　前記自動蒸気抜き機構は、重ねた第１フィルムおよび第２フィルムを熱溶着して形成されその内側の蒸気開放部を内容物収容部から隔離する蒸気抜きシール部と、前記蒸気開放部において前記第１フィルムに形成されたスリットと、前記第１フィルムに形成され前記スリットによって区画されたフラップ片とを有し、
    　前記蒸気抜きシール部は、加熱時に前記内容物収容部内に発生する蒸気によって剥離を開始するシール剥離開始部を有し、
    　前記スリットは、スリット両端部と、前記スリット両端部よりも前記シール剥離開始部に近い領域に向かって形成され、前記スリット両端部を繋ぐスリット中間部とから構成され、
    　前記自動蒸気抜き機構は、前記スリットの全周を覆うように形成された、前記第１フィルムおよび前記第２フィルムを溶着していない未シール部と、前記第１フィルムに形成された前記フラップ片の一部を前記第２フィルムに熱溶着した制御用シール部とを更に有することを特徴とする電子レンジ用パウチ。     A microwave pouch with an automatic steam release mechanism,
    The automatic steam release mechanism includes a steam release seal portion which is formed by heat-sealing the first film and the second film and isolates the inner steam release portion from the content storage portion, and the steam release portion at the steam release portion. A slit formed in one film and a flap piece formed in the first film and partitioned by the slit,
    The steam release seal portion has a seal peeling start portion that starts peeling due to steam generated in the content storage portion during heating,
    The slit is formed from both ends of the slit and an intermediate slit portion that is formed toward a region closer to the seal peeling start portion than both ends of the slit and connects both ends of the slit,
    The automatic steam venting mechanism includes an unsealed portion formed to cover the entire circumference of the slit and to which the first film and the second film are not welded, and the flap piece formed on the first film. and a control sealing portion heat-sealed to the second film.
  2. 　前記電子レンジ用パウチは、前記第１フィルムおよび前記第２フィルムを熱溶着して製袋用シール部を形成することで袋状に形成されたものであり、
    　前記蒸気抜きシール部は、前記製袋用シール部に連続して形成され、
    　前記制御用シール部は、前記製袋用シール部からパウチ内側に向けて突出するように形成されていることを特徴とする請求項１に記載の電子レンジ用パウチ。     The microwave pouch is formed in a bag shape by heat-sealing the first film and the second film to form a bag-making sealing portion,
    The steam release seal portion is formed continuously with the bag-making seal portion,
    2. The pouch for a microwave oven according to claim 1, wherein the control seal portion is formed to protrude from the bag-making seal portion toward the inner side of the pouch.
  3. 　前記第２フィルムには、前記蒸気開放部において、前記第１フィルムに形成された前記スリットに表裏方向に重なるように、前記第１フィルムに形成された前記スリットと同一形状および同一位置に形成された第２スリットが形成されていることを特徴とする請求項１または請求項２に記載の電子レンジ用パウチ。 The second film is formed in the same shape and at the same position as the slit formed in the first film so as to overlap the slit formed in the first film in the front and back direction at the steam release portion. 3. The pouch for a microwave oven according to claim 1, further comprising a second slit.
PCT/JP2022/004434 2021-02-10 2022-02-04 Pouch for microwave oven use WO2022172871A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2022547108A JP7164768B1 (en) 2021-02-10 2022-02-04 microwave pouch
CN202280008656.0A CN116710369A (en) 2021-02-10 2022-02-04 Bag for microwave oven
KR1020237023557A KR20230118650A (en) 2021-02-10 2022-02-04 pouch for microwave
EP22752695.1A EP4292953A1 (en) 2021-02-10 2022-02-04 Pouch for microwave oven use
JP2022166503A JP2022179809A (en) 2021-02-10 2022-10-17 Pouch for microwave oven
US18/231,331 US20230391536A1 (en) 2021-02-10 2023-08-08 Microwavable pouch

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JP2021019752 2021-02-10
JP2021-019752 2021-02-10

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/231,331 Continuation US20230391536A1 (en) 2021-02-10 2023-08-08 Microwavable pouch

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003192042A (en) 2001-12-21 2003-07-09 Toyo Seikan Kaisha Ltd Packaging bag for microwave oven, and manufacturing method for package wherein content is filled in the packaging bag for microwave oven
JP2005306426A (en) * 2004-04-20 2005-11-04 Dainippon Printing Co Ltd Packaging bag for heating in microwave oven
JP2007131302A (en) * 2005-11-08 2007-05-31 Dainippon Printing Co Ltd Packaging bag for use in microwave oven
JP2017024733A (en) * 2015-07-16 2017-02-02 キョーラク株式会社 Packaging bag for microwave oven
JP2017214129A (en) * 2016-06-02 2017-12-07 東洋製罐株式会社 Pouch for microwave oven
WO2017208864A1 (en) * 2016-06-02 2017-12-07 東洋製罐株式会社 Microwave pouch
JP2019031032A (en) * 2017-08-09 2019-02-28 株式会社熊谷 Manufacturing method of package for microwave heating
JP2020055628A (en) * 2018-09-28 2020-04-09 大日本印刷株式会社 Pouch

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003192042A (en) 2001-12-21 2003-07-09 Toyo Seikan Kaisha Ltd Packaging bag for microwave oven, and manufacturing method for package wherein content is filled in the packaging bag for microwave oven
JP2005306426A (en) * 2004-04-20 2005-11-04 Dainippon Printing Co Ltd Packaging bag for heating in microwave oven
JP2007131302A (en) * 2005-11-08 2007-05-31 Dainippon Printing Co Ltd Packaging bag for use in microwave oven
JP2017024733A (en) * 2015-07-16 2017-02-02 キョーラク株式会社 Packaging bag for microwave oven
JP2017214129A (en) * 2016-06-02 2017-12-07 東洋製罐株式会社 Pouch for microwave oven
WO2017208864A1 (en) * 2016-06-02 2017-12-07 東洋製罐株式会社 Microwave pouch
JP2019031032A (en) * 2017-08-09 2019-02-28 株式会社熊谷 Manufacturing method of package for microwave heating
JP2020055628A (en) * 2018-09-28 2020-04-09 大日本印刷株式会社 Pouch

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JP7164768B1 (en) 2022-11-01
US20230391536A1 (en) 2023-12-07
EP4292953A1 (en) 2023-12-20
JPWO2022172871A1 (en) 2022-08-18
JP2022179809A (en) 2022-12-02
CN116710369A (en) 2023-09-05

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