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WO2015166590A1 - Sac d'emballage micro-ondable - Google Patents

Sac d'emballage micro-ondable Download PDF

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Publication number
WO2015166590A1
WO2015166590A1 PCT/JP2014/062537 JP2014062537W WO2015166590A1 WO 2015166590 A1 WO2015166590 A1 WO 2015166590A1 JP 2014062537 W JP2014062537 W JP 2014062537W WO 2015166590 A1 WO2015166590 A1 WO 2015166590A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
packaging bag
heat
sealing
sealed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/062537
Other languages
English (en)
Japanese (ja)
Inventor
佐藤　陽一
孝行 宮崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanaoka KK
Original Assignee
Kanaoka KK
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 Kanaoka KK filed Critical Kanaoka KK
Priority to PCT/JP2014/062537 priority Critical patent/WO2015166590A1/fr
Publication of WO2015166590A1 publication Critical patent/WO2015166590A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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

Definitions

  • the present invention relates to a food packaging bag made of a synthetic resin film that is distributed in a sealed state after containing food.
  • This food packaging bag can be heated in a microwave oven while containing food.
  • Packed foods that are sealed after the food is stored in a packaging bag made of a synthetic resin film corresponding to a microwave oven and are distributed for distribution in a sealed state are known, and are particularly popular for storing retort foods.
  • a consumer who purchases the food heats the food inside by placing it in a microwave oven with the packaging bag sealed. Therefore, there is a risk of accidents in which food pressure etc. swells and eventually bursts due to the internal pressure of the packaging bag increasing due to the water vapor evaporated from the food by heating or the thermal expansion of the air in the packaging bag. .
  • Patent Document 1 a microwaveable packaging bag in which a valve body for releasing the pressure generated by the heating is attached to the packaging bag in advance, and bonding of the packaging body by heat sealing
  • Patent Document 2 a microwave-compatible packaging bag that weakens the heat seal strength of a part of the part so that the joined part can be easily peeled by an increase in internal pressure due to heating, and the pressure is released from this
  • the known invention described in Patent Document 1 has a problem that the manufacturing cost of the packaging bag is increased due to the labor, process, and material cost of mounting the valve body.
  • it is difficult to set the heat seal strength the output of the magnetron of the microwave oven is large, or the internal pressure suddenly increases due to the high water content of the food.
  • other portions may be peeled off at the same time and the package may be destroyed.
  • the present invention has been created for the purpose of a microwave-compatible packaging bag that solves the above-mentioned problems.
  • the microwave oven-compatible packaging bag of the present invention is a bag made in a state where the front film and the rear film are overlapped and the three sides are heat-sealed and the remaining one side is an open part for filling the contents.
  • Ventilation means provided at the heat seal target location of the front film, It is pre-heat sealed at a position that covers the ventilation means on the back surface of the front film, and a belt-like film is provided as a heat seal target surface for heat-sealing to the back surface of the back film when sealing the packaging bag
  • the heat seal strength of the front film and the belt-like film is set to be weaker than the heat seal strength for making the packaging bag and the heat seal strength of the belt-like film and the rear film at the time of sealing the packaging bag.
  • the microwave oven-compatible packaging bag when the belt-shaped film and the front film are heat-sealed, the bottom side of the packaging bag is covered from the heat-sealed portion covering the ventilation means of the front film.
  • the heat-sealed target location at the time of sealing the packaging bag is set to end in the middle of the non-heat-sealed location.
  • the ventilation means serving as a pressure release port that is opened in the front film at the heat seal target portion is a raised piece sandwiched between a pair of cuts.
  • the invention described in claim 4 is characterized in that, in the microwave oven-compatible packaging bag, the ventilation means serving as a pressure release port that is opened in the front film of the heat seal target portion is a through hole. Further, in the food packaging bag according to claim 5, the ventilation means serving as a pressure release port opened in the front film of the heat seal target portion is a pulling piece sandwiched between a pair of cuts. It is characterized by that.
  • the invention described in claim 6 is characterized in that in the food packaging bag described above, the packaging bag is a self-supporting gusset bag that is made by sandwiching the folded gusset film into the bottom portion and making a bag. To do.
  • the microwave oven-compatible packaging bag of the present invention having the above configuration is kept in a sealed state by heat-sealing and sealing the open portion after containing food inside.
  • a belt-like film covering the ventilation means of the front film is interposed between the front film and the rear film provided with ventilation means serving as a pressure release port, and heat sealing is performed.
  • the belt-like film is heat-sealed in advance to the back surface of the front film at the stage of making the packaging bag, and the heat-sealing strength is the same as the heat-sealing strength for making the packaging bag and the sealing time of the packaging bag. It is set to be weaker than the heat seal strength between the belt-like film and the rear film.
  • the packaging bag When the packaging bag is heated in a microwave oven in a sealed state, the internal pressure of the packaging bag is increased due to the thermal expansion of water vapor evaporated from the food by the heating or air in the packaging bag, so that the packaging bag expands. Water vapor or expanded air acts to push and spread the bonding area of each film by heat sealing, and the bonding area of the front film and the belt-like film with the weakest heat seal strength of the bonding area is first expanded. .
  • the front film is provided with ventilation means, the strip-like film covering it is peeled off, so that water vapor or expanded air escapes from there to prevent the internal pressure from rising, and the other film is attached. The mating point is not spread out and the packaging bag is prevented from rupturing.
  • the heat seal strength between the belt-like film and the front film is set to be weaker than the heat seal strength of other locations, and the bonding location is expanded when the internal pressure in the packaging bag increases. To release the pressure.
  • the end face of the laminating film, the front film, and the bonded portion must be exposed in the bag. Therefore, after the food is stored, when the open portion is heat-sealed and sealed, it is required to heat-seal the portion below the lower end of the belt-like film so that the end face is not hidden.
  • the heat seal target location at the time of sealing of a packaging bag may be terminated in the middle of the non-heat seal location.
  • the end of the band-shaped film is in a state of being swollen with respect to both the front film and the rear film near the end of the sealing portion, but the heat-seal strength between the band-shaped film and the front film is the band-shaped film and the rear film. Since it is set to be weaker than the interval, this portion is expanded by the internal pressure, and the predetermined effect of the present invention is exhibited.
  • the end position of the sealing part when sealing the open part by heat sealing may be anywhere in the middle of the non-heat-sealed part, so that high processing accuracy is not required and it is a food factory of a food processor.
  • the microwave oven-compatible packaging bag of the present invention can be used well.
  • the ventilation means serving as the pressure release port opened in the front film at the heat seal target portion is provided with a through hole in the upper part of the raising piece sandwiched between the pair of cuts. .
  • the packaging bag is a self-supporting gusset bag having a gusset portion at the bottom.
  • a bag has a structure in which a bag is made by sandwiching a gusset film folded in half as a bottom material at the bottom, so that the thickness on the bottom side increases with respect to the open side.
  • FIG. 1 is a partially cutaway perspective view of a microwaveable packaging bag of the present invention.
  • FIG. 2 is a perspective view of the front film of the microwaveable packaging bag of the present invention.
  • FIG. 3 is a perspective view of the rear film of the microwaveable packaging bag of the present invention.
  • FIG. 4 is a perspective view of a gusset film of the microwaveable packaging bag of the present invention.
  • FIG. 5 is a perspective view of a band-like film of the microwaveable packaging bag of the present invention.
  • FIG. 6 is an exploded perspective view of the microwave oven-compatible packaging bag of the present invention.
  • FIG. 7 is a perspective view after sealing the microwaveable packaging bag of the present invention.
  • FIG. 8 is a cross-sectional view of the microwaveable packaging bag of the present invention.
  • FIG. 9 is a partially cutaway perspective view of the microwave oven-compatible packaging bag of the present invention.
  • FIG. 10 is a cross-sectional view after sealing the microwaveable packaging bag of the present invention.
  • FIG. 11 is a cross-sectional view of the main part showing the operation of the microwaveable packaging bag of the present invention.
  • FIG. 12 is a cross-sectional view of the main part showing the operation of the microwaveable packaging bag of the present invention.
  • FIG. 13 is a cross-sectional view of the main part showing the laminated structure of the constituent films of the microwaveable packaging bag of the present invention.
  • FIG. 14 is a front view showing different embodiments of the ventilation means of the microwave oven-compatible packaging bag of the present invention.
  • FIG. 15 is a front view showing another embodiment of the ventilation means of the microwaveable packaging bag of the present invention.
  • FIG. 1 is a partially cutaway perspective view showing the structure of a packaging bag.
  • 2 to 5 are diagrams showing components of the packaging bag.
  • the front film 1 and the rear film 8 are opposed to each other, and the folded gusset film 9 is sandwiched between the bottom with the folds up, and the two sides of each film and the bottom are heat-sealed portions H1 and H2, respectively.
  • the bag is made in a state in which three sides are sealed by heat sealing as H3 and the remaining one side is an open part for filling the contents (see FIG. 6, reference numeral 2 is provided on the front film 1).
  • This venting means 2 is for communicating the inside and outside of the bag in order to release the internal pressure in the packaging bag, and when the gusset film 9 is widened to allow the packaging bag to expand into a three-dimensional shape and to be self-supporting.
  • the ventilation means 2 is constituted by providing a through hole 3 in the upper part of the raising piece 5 sandwiched between the pair of cuts 4, 4.
  • only the through hole 20 as shown in FIG. 14 or only the raised piece 30 as shown in FIG. 15 may be used.
  • the aeration means 2 must be sealed in order to block communication with the outside after filling the contents and sealing the opening.
  • a belt-like film 6 that covers the ventilation means is heat-sealed in advance on the back surface of the front film 1 where the ventilation means 2 is located in bag making (see FIGS. 1 and 8).
  • the belt-like film 6 has the same width as that of the front film 1, covers the ventilation means 2 of the front film, and has a lower end extending to the lower side.
  • the rear film side of the belt-like film 6 is a heat seal target surface on which heat sealing is planned for the rear film rear surface when the packaging bag is sealed.
  • the heat seal strength of the heat seal location H4 of the front film 1 and the belt-like film 6 is the heat seal strength at the heat seal locations H1 and H2 and H3 for making a packaging bag, and when the packaging bag is sealed. It is set to be weaker than the heat seal strength between the belt-like film and the rear film 8.
  • the heat sealing portion H4 of the front film 1 and the belt-like film 6 is not the entire region of the belt-like film, but is terminated in the middle, so that the packaging bag is covered from the portion heat-sealed covering the ventilation means of the front film. A non-heat-sealed part is generated at a part toward the bottom side (see FIGS. 1 and 8).
  • each member constituting the packaging bag of the present invention described above is made of a plastic film, and in this embodiment, each film is a laminated film composed of a base material layer and a sealant layer.
  • FIG. 13 is a view showing a laminated structure of each film in that case.
  • the front film 1 has ONY (stretched nylon film) as the base material layer A
  • CPP unstretched polypropylene film
  • the rear film 8 has the same ONY (stretched nylon film) and sealant as the base material layer C.
  • the layer D CPP (unstretched polypropylene film) is used.
  • the gusset film 9 has the same configuration as described above.
  • the belt-like film 6 is obtained by laminating two kinds of sealant layers having different heat seal strengths on both surfaces of a base material layer, and a sealant layer for bag making as a sealant layer G on the rear film 8 side of the base material layer F.
  • the same CPP unstretched polypropylene film
  • the sealant layer E of the front film 1 is an EP (easy peel film) having a lower heat seal strength.
  • the microwave oven-compatible packaging bag of the present invention having the above-described configuration is packaged by filling the contents such as food from the open portion and then heat-sealing the heat-sealing target portion set in the open portion. It becomes food.
  • the heat seal target portion is set such that the lower end ends at a midpoint of the non-heat seal portion of the front film 1 and the belt-like film 6.
  • the imaginary line L2 indicates the end position of the belt-like film 6
  • the imaginary line L1 indicates the end position of the heat-seal portion H4 of the belt-like film with respect to the front film 1.
  • the heat seal of the open portion must be performed at least above the ventilation means 2 and between the end position L1 of the heat seal portion H4 of the belt-like film and the non-heat seal portion located between the end position L2 of the belt-like film (FIG. 9, (See FIG. 10).
  • a location from the end L1 of the heat seal location H4 toward the bottom side of the packaging bag is defined as a non-heat seal location, and the location to be heat sealed when sealing the packaging bag Since the end L3 is set between the non-heat-sealed portions, the lower end 7 of the belt-like film 6 is in a state of being swollen with respect to both the front film 1 and the rear film 8 in the vicinity of the end L3 of the sealing portion. (See FIG. 11).
  • the internal pressure of the packaging bag increases due to the heat expansion of the water vapor evaporated from the food by the heating or the air in the packaging bag.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Package Specialized In Special Use (AREA)

Abstract

L'invention porte sur un sac d'emballage de produits alimentaires micro-ondable, lequel sac comporte un mécanisme d'échappement de pression pour empêcher un éclatement dû à une dilatation thermique. Dans un sac d'emballage fabriqué par la superposition d'un film de panneau avant (1) et d'un film de panneau arrière (8), le thermoscellage de trois des côtés, le fait de laisser le côté restant en tant que partie ouverte pour remplir le sac de contenus, et le fait de munir la partie ouverte d'un emplacement de thermoscellage qui est destiné à être scellé après le remplissage par des contenus, le film de panneau avant à l'emplacement de thermoscellage comporte des moyens d'évacuation (2) jouant le rôle d'orifice de relâchement de pression, et un film en forme de bande (6) qui recouvre les moyens d'évacuation est thermoscellé sur la surface arrière du film de panneau avant où sont situés les moyens d'évacuation. Le côté film de panneau arrière du film en forme de bande constitue une surface ciblée de thermoscellage conçue pour subir un thermoscellage sur la surface arrière du film de panneau arrière pendant le scellage du sac d'emballage. La force de thermoscellage entre le film de panneau avant et le film en forme de bande est inférieure à la force de thermoscellage pour fabriquer le sac d'emballage, et à la force de thermoscellage entre le film en forme de bande et le film de panneau arrière quand le sac d'emballage est scellé.
PCT/JP2014/062537 2014-05-01 2014-05-01 Sac d'emballage micro-ondable Ceased WO2015166590A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/062537 WO2015166590A1 (fr) 2014-05-01 2014-05-01 Sac d'emballage micro-ondable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/062537 WO2015166590A1 (fr) 2014-05-01 2014-05-01 Sac d'emballage micro-ondable

Publications (1)

Publication Number Publication Date
WO2015166590A1 true WO2015166590A1 (fr) 2015-11-05

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Application Number Title Priority Date Filing Date
PCT/JP2014/062537 Ceased WO2015166590A1 (fr) 2014-05-01 2014-05-01 Sac d'emballage micro-ondable

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WO (1) WO2015166590A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116424704A (zh) * 2023-04-11 2023-07-14 山东亚新塑料包装有限公司 一种微波炉用的包装袋及其制作工艺

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10264977A (ja) * 1997-03-26 1998-10-06 Toyo Alum Kk 包装袋
JP2000191057A (ja) * 1999-01-05 2000-07-11 Toppan Printing Co Ltd 包装袋
JP2001010678A (ja) * 1999-06-28 2001-01-16 Dainippon Printing Co Ltd 包装体
JP2007204072A (ja) * 2006-01-31 2007-08-16 Meiwa Pax Co Ltd 電子レンジ加熱用包装袋
JP2007302321A (ja) * 2006-05-15 2007-11-22 Toppan Printing Co Ltd 電子レンジ加熱用包装袋
JP2009083914A (ja) * 2007-10-01 2009-04-23 Senma Kagaku:Kk 自動通気包装袋
JP4586728B2 (ja) * 2003-07-24 2010-11-24 凸版印刷株式会社 蒸気抜き機能を有する包装袋とそれを用いた包装体
JP2011173628A (ja) * 2010-02-25 2011-09-08 Toppan Printing Co Ltd 電子レンジ用調理袋
US20130272629A1 (en) * 2012-04-17 2013-10-17 Woo Jin Kim Vacuum packing envelope for cooking

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10264977A (ja) * 1997-03-26 1998-10-06 Toyo Alum Kk 包装袋
JP2000191057A (ja) * 1999-01-05 2000-07-11 Toppan Printing Co Ltd 包装袋
JP2001010678A (ja) * 1999-06-28 2001-01-16 Dainippon Printing Co Ltd 包装体
JP4586728B2 (ja) * 2003-07-24 2010-11-24 凸版印刷株式会社 蒸気抜き機能を有する包装袋とそれを用いた包装体
JP2007204072A (ja) * 2006-01-31 2007-08-16 Meiwa Pax Co Ltd 電子レンジ加熱用包装袋
JP2007302321A (ja) * 2006-05-15 2007-11-22 Toppan Printing Co Ltd 電子レンジ加熱用包装袋
JP2009083914A (ja) * 2007-10-01 2009-04-23 Senma Kagaku:Kk 自動通気包装袋
JP2011173628A (ja) * 2010-02-25 2011-09-08 Toppan Printing Co Ltd 電子レンジ用調理袋
US20130272629A1 (en) * 2012-04-17 2013-10-17 Woo Jin Kim Vacuum packing envelope for cooking

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116424704A (zh) * 2023-04-11 2023-07-14 山东亚新塑料包装有限公司 一种微波炉用的包装袋及其制作工艺

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