JP2015129000A - package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package designed such that a whole outer box accommodating a packaging bag in which stuff is sealed can be heat cooked in a microwave range, uneven heating is prevented, contamination in the microwave range is prevented even if the accommodated stuff is burst during heating, and safe removal from the microwave range and safe removal from the outer box are ensured.SOLUTION: A package comprises an outer box 100 and a packaging box 200 and is designed such that stuff accommodated in the packaging bag is heat cooked while the packaging bag is accommodated in the outer box. The packaging bag is flat. Additionally, this packaging bag has a vapor removal hole 28 communicating with outside air as a result of exfoliation by the application of heat. A removable opening part 13 is provided from the upper face of the outer box to right and left side faces thereof, along which an opening can be formed in the form of a lateral belt. The packaging bag is accommodated in a horizontal position in the outer box such that the vapor removal hole faces upwards. The removable opening part is arranged avoiding the position opposite to the vapor removal hole.

Description

  The present invention relates to a package. In particular, a packaging bag having a steam venting mechanism in which food such as retort food is hermetically sealed so that microwave heating is possible, and an outer box that is used for the exterior of the packaging bag and is heated in a microwave oven with the packaging bag stored It is related with the package which consists of.

  Conventionally, many foods and the like are packed in air-tight and liquid-tight packaging bags made of laminated films such as synthetic resins and distributed as sealed packaged foods. In order to prevent spoilage due to contaminated bacteria before the sealed packaged food is manufactured, stored, distributed, and eaten, it is subjected to heat sterilization or heat pressure sterilization in the state of the sealed packaged food. May be shipped from.

  As described above, sealed packaged foods are often heated before shipment. However, when general consumers eat these foods, even such sealed packaged foods should be cooked again in a microwave oven or the like. There are many.

  The microwave oven vibrates water molecules contained in food by microwave irradiation and heats the food with frictional heat generated by the vibration of water molecules. Water vapor is generated with microwave heating by the microwave oven, and the normal sealed bag formed of the plastic film expands and bursts due to the water vapor.

  For this reason, in order to avoid the bursting of the sealed packaged food packaging bag due to an increase in the internal vapor pressure during heating, the packaging bag is opened and the contents are transferred to another container. May be heated.

  Moreover, the microwave heating method of the food packaging body which heats an opening opening upwards so that the contents may not spill with the packaging bag using the stored outer box with the packaging bag opened (Patent Document) 1) is known.

  In this microwave heating method for a food packaging body, as shown in FIG. 7, a self-standing means 31 is provided from a component of the packaging box 300 in a packaging box 300 in which a heat-resistant storage bag body 301 is accommodated. The self-supporting means 31 is separated from the packaging box 300, and the packaging box 300 is attached to the self-supporting means 31. Then, the heat-resistant storage bag body 301 is placed in a standing packaging box 300 and is heated by being irradiated with microwaves.

  In addition, recently, due to the development of food processing technology and packaging technology and the spread of microwave ovens, a packaging bag containing cooked foods that can be heated in a microwave oven that does not need to be opened unnecessarily when heating is proposed, It has been put into practical use.

  When the internal vapor pressure rises above a predetermined pressure, the packaged bag containing cooked food that can be heated in the microwave oven is provided with a vapor escape portion that is opened by the vapor pressure, and can be heated without being opened. For example, in order to discharge water vapor generated inside the bag by microwave heating of a microwave oven to the outside of the bag, a part of the pouch body is opened during heating, or an escape hole is provided in the pouch body.

Also, make a water vapor adjustment hole and seal this water vapor adjustment hole with an adhesive seal, and peel off the seal before heating, or if the steam pressure in the pouch body increases by heating, the seal part will open easily Whether to open the valve or not.

  On the other hand, the wrapping bag containing cooked food is made of paper for convenient storage, transportation, display, etc., and for displaying and displaying decorations at the distribution stage, explanation of food, eating methods, etc. to consumers. Often packaged in a packaging box made of metal. Since many of the packaging boxes have a flat shape of a cooked food-containing packaging bag, generally a flat rectangular shape is often seen.

  Furthermore, a microwave oven package (Patent Document 2) and hermetically sealed packaging that heats a microwave oven without taking out the packaging bag from a packaging box made of paper or the like in which a packaging bag containing cooked food capable of microwave heating is stored. A food packaging box and a hermetically sealed food packaged in a packaging box (Patent Document 3) are also known.

  As shown in FIG. 8, the microwave oven package is a microwave oven package including an exterior box 400 that is applied to an outer package of a packaging bag 401 that is sealed and filled with cooked food. And the relief part for releasing the internal pressure of the packaging bag 401 when it heats is formed in the back sticking part.

  Further, when the microwave heating package is heated, in order to expose the back pasting portion from the outer packaging box 400, a separation opening portion 42 formed by a separation line 41 is provided. And when heating with a microwave oven, the cutting opening part 42 is opened and the part for pressure relief is exposed.

  Further, as shown in FIG. 9 (a), the sealed packaging food packaging box and the packaging package body of the sealed packaging food packaged in the packaging box have the food sealed in the packaging bag 501 provided with the steam escape portion. Wrapped and stored in a packaging box 500.

  And when heating with a microwave oven, in order to expose a vapor escape part, as shown in FIG.9 (b), the part near the front wall 52 of the top wall 51 is opened. It has been pointed out that heating the entire box in this way reduces the risk of burns when taken out from the microwave oven.

  However, many of the packaging bags described above have a flat overall shape. For this reason, when it heats with the microwave oven hold | maintaining in the attitude | position which stood the packaging bag like patent document 1, in the microwave oven used in many households, the irradiation efficiency of the microwave to a packaging bag falls. . And there exists a problem that heating takes time.

  Most of the boxes that can hold the packaging bag in a standing position are flat in transportation, storage, display, and the like. And the structure for deform | transforming so that a packaging bag may be hold | maintained to a standing posture becomes complicated, and there exists a problem that it takes an effort.

  Moreover, when opening a packaging bag, transferring to another container and heating with a microwave oven, preparation of a container takes time and effort. And when taking out a container etc. from a microwave oven, there exists a possibility of burning a hand etc.

  Moreover, when the part which escapes the vapor | steam etc. by the internal pressure of a packaging bag like patent document 2 or 3 is exposed from an outer box and it heats with a microwave oven, the stored item in a packaging bag spouts from the part which escapes a vapor | steam etc. There is a case. And there is a problem that the inside of the microwave oven must be soiled and cleaned.

Therefore, as a packaging body free from these problems, a packaging bag 601 provided with a steam hole 61 that is peeled open by an internal pressure as shown in FIG. 10 is stored in an exterior box 600 so that the steam hole faces upward. An exterior box 6 in which an opening part 62 that can form an opening on the upper surface of the box is provided so as not to face the steam hole 61, and the packaging bag 601 separates the opening part 62.
There is a package (Patent Document 4) that can be cooked while being stored in 00.

  Even in this package, an opening is provided only on the upper surface of the packaging bag. When the package is taken out after cooking, it is necessary to put in and remove the hand from the upper surface, and there is a risk of touching the hot portion of the heated packaging bag.

  Known documents are shown below.

JP-A-4-214126 JP 2001-039476 A JP 2002-19776 A Japanese Patent No. 48882493

  The present invention has been made in view of the above circumstances, and can be cooked in a microwave oven together with an outer box containing a packaging bag in which a stored item such as food is hermetically packaged, and is placed flat and heated. There is no unevenness in heating, even if the stored items are ejected during heating, the inside of the microwave oven is not contaminated, there is no danger in taking out from the microwave oven, and there is no danger in taking out the packaging bag from the outer box. It is an object to provide a package.

This invention is made in view of the subject which concerns, and invention of Claim 1 is comprised by the exterior box and the packaging bag, and heat-cookes the accommodation thing of a packaging bag, storing the said packaging bag in the said exterior box. A package,
The packaging bag is flat, and the packaging bag is provided with a steam vent hole that is peeled off and communicated with the outside air by the internal pressure of the gas generated by heating,
From the upper surface of the outer box to the left and right side surfaces, in the form of a strip in the lateral direction, a separation opening that can form an opening is provided,
The packaging bag is housed in the outer box in a flat posture, and so that the vapor vent hole faces the upper surface,
The separation opening is disposed so as to avoid a position facing the vapor vent hole, and the upper surface of the vapor vent hole is covered with the inner surface of the outer packaging box.

  The invention according to claim 2 is characterized in that the outer box is provided with a crease that bulges the outer box in synchronism with the swelling of the packaging bag upon heating. Is the body.

  The invention according to claim 3 is characterized in that a crease that folds outward when the packaging bag after heating is taken out is provided on the bottom surface of the outer packaging box. Is the body.

  Since the package of this invention consists of the above structure, since the cut-off opening part of an exterior box is cut out and opened and the whole cooking | cooking box can be cooked with a microwave oven, it can be cooked easily.

Since the packaging bag is placed flat and heated, there is no unevenness of heating, and even if it swells due to internal pressure due to gas such as water vapor generated by heating, it has a steam vent hole that opens and peels off. The packaging bag is not broken by cooking.

  And since the separation opening is arranged avoiding the position facing the vapor vent hole, the inside of the microwave oven will not be polluted even if the stored items are ejected during heating. Further, since the entire outer box is cooked in the microwave oven, there is no danger without touching the hot packaging bag when taking out from the microwave oven.

  Furthermore, since the separation opening that can form the opening is provided in a horizontal band shape from the upper surface of the outer box to the left and right side surfaces, the side seal that is not heated even when the packaging bag is taken out from the outer box There is no danger because it can be taken out with parts.

  Furthermore, the outer box is provided with folds that allow the outer box to bulge up in synchronism with the swelling of the packaging bag as it is heated, so that the outer box can easily rise even if the packaging bag expands due to heating. Since it can inflate, the packaging bag is not subjected to excessive stress and the outer box is not torn. And it can return to the shape before heating an exterior box with the shrinkage | contraction after completion | finish of heating of a packaging bag.

  After heating, a crease for taking out the packaging bag is provided on the bottom surface of the outer box, so that it can be easily folded and folded outward to take out the packaging bag.

It is explanatory drawing which showed typically an example of the package of this invention with the perspective. It is explanatory drawing which showed typically the blank for packaging boxes of an example of the package of this invention with the top view. It is explanatory drawing which showed typically the packaging bag used for an example of the package of this example. (A) is a top view. (B) is a longitudinal cross-sectional view of the center. FIG. 4 is an enlarged view of a portion X surrounded by a circle in FIG. It is explanatory drawing which showed typically the state which cut off and cut off the opening part in an example of the package of this invention. It is explanatory drawing which showed typically the state which the packaging bag used for an example of the package of this invention swelled in perspective. It is explanatory drawing which showed the state cooked with an example of the conventional package body typically with the perspective view. It is explanatory drawing which showed typically the other example of the conventional package body by the perspective view. (A) It is explanatory drawing which showed the further another example of the conventional package body typically by the perspective view. (B) It is explanatory drawing which showed typically the state cooked in the other another example of the conventional package body by the side surface. It is explanatory drawing which showed the further another example of the conventional package body typically by the perspective view.

Hereinafter, embodiments for carrying out the present invention will be described.
FIG. 1 is an explanatory view schematically showing an example of the package of the present invention in perspective.
FIG. 2 is an explanatory view schematically showing a blank for a packaging box as an example of the packaging body of the present invention in a plan view.

  As shown in the perspective view of FIG. 1, the packaging body of this example includes a rectangular flat outer box 100 and a packaging bag 200 accommodated in the outer packaging box 100, and the packaging bag 200 is filled with a stored item. . The stored items are filled and stored with cooked or semi-cooked foods, and are provided to be cooked and eaten in a microwave oven.

As a blank base material for making the outer box 100, a decorative cardboard sheet such as paperboard, micro flute, E flute, plastic sheet or the like can be used. As the paperboard, for example, ordinary paperboard such as ivory paper, post card, double-sided card paper, Manila cardboard, and white paperboard that is a white ball can be used.

  As shown in FIG. 2, the blank for making the outer box 100 has a top plate 1, a right side plate 2, a bottom plate 3, and a left side plate 4 arranged in this order. Moreover, in FIG. 2, the left sticking face board 5 is provided in the left side of the upper surface board 1, the back sticking face board 6 is provided in the upper side, and the front sticking face board 7 is provided in the lower side.

  A rear side plate 8 is provided on the upper side of the bottom plate 3, and a front side plate 9 is provided on the lower side. Adhering pieces 10 are provided on the upper and lower ends of each of the right side plate 2 and the left side plate 4.

  Two easy cutting lines 11 extend in the horizontal direction across the left sticking face plate 5, the top face plate 1, and the right side face plate 2, and continue in the vertical direction at the boundary line between the right side face plate 2 and the bottom face plate 3. Further, the left side plate 4 on which the left sticking face plate 5 overlaps is also provided with an easy cut line 11 at a position facing the easy cut line of the left sticking face plate 5, and the vertical direction at the boundary line between the left side face plate 4 and the bottom face plate 3. Are connected by a straight cut line 12.

  In this example, the easy-cut lines 11 are formed by arranging small cut lines in a line through the connecting portion. And when boxed, it becomes the separation opening part 13 enclosed by these. The cut line 12 serves as an opening trigger for starting the separation of the separation opening 13.

  In addition, the upper surface plate 1 is provided with oblique upper surface plate folding lines 14 respectively extending from the four corners of the square toward the central portion. When the packaging bag 200 is inflated with heating, the top plate folding line 14 is broken, so that the outer box 100 can be swollen up and inflated in synchronization.

  The bottom plate 3 is provided with a bottom plate crease 15. The bottom plate folding line 15 is formed in a lateral direction at a position where the easy opening line 11 near the rear side plate 8 of the right side plate 2 or the left side plate 4 reaches the boundary with the bottom plate 3 or in the vicinity thereof. Provided.

  As a result, when the heated packaging bag 200 is taken out of the outer box, the separation opening 13 is separated, so that it is easily folded from the bottom plate fold 15 without being obstructed by the right side plate 2 or the left side plate 4. be able to. And it becomes easy to take out the packaging bag 200 by tilting the part near the rear side plate 8 outward by the bottom plate folding ruler 15.

  In order to make a box from this blank, the right side plate 2, the left side plate 4, the rear side plate 8, and the front side plate 9 are vertically raised from the bottom plate 3, and the sticking pieces 10 of the right side plate 2 and the left side plate 4 are attached. They are attached to the inside of the adjacent rear side plate 8 and front side plate 9 respectively.

  Next, the top plate 1 is tilted so as to face the bottom plate 3, the left sticking face plate 5, the rear sticking face plate 6, and the front sticking face plate 7 are tilted downward, and the left side face plate 4 and the rear side face plate, respectively. 8. Adhere to the front side plate 9. Thereby, the exterior box 100 of FIG. 1 is boxed.

  When the packaging bag 200 is in a blank state, it may be placed on the bottom plate 3 and boxed and stored, or the bottom bag 3, the right side plate 2, the left side plate 4, The rear side plate 8 and the front side plate 9 may be housed when assembled. At this time, the steam vent hole 28 is accommodated near the rear side plate 8 so that the steam vent hole 28 of the packaging bag 200 does not face the separation opening 13.

The packaging bag 200 is formed by overlapping the front film 20a and the back film 20b and sealing the peripheral edge. The front film 20a and the back film 20b are each composed of a laminated film in which a base film layer and a sealant layer are laminated.

  As the base film layer, polyolefin (polyethylene, polypropylene, etc.), polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamide (nylon-6, nylon-66, polyimide, etc.), or polymers of these polymers A relatively heat-resistant plastic film that is usually used as a packaging material, such as a copolymer, can be used.

  The sealant layer is made of a heat-fusible resin and is provided to form a heat seal part of the packaging bag 200. The heat-fusible resin includes polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-methacrylic acid copolymer, ethylene-methacrylic acid ester copolymer, ethylene-acrylic acid copolymer, ethylene-acrylic. Acid ester copolymers and their metal cross-linked products are used.

  In the case where the packaging bag 200 filled with stored items is sterilized at high temperature and high pressure for distribution at room temperature, the heat-fusible film of the sealant layer may be linear low density polyethylene, but polypropylene is preferably used. . The thickness of the sealant layer is determined according to the purpose, but is generally in the range of 30 to 200 μm.

  In addition, the base film layer and the sealant layer can be laminated by a known method, but in consideration of microwave heating, it can be laminated by dry lamination using a two-component curable urethane adhesive. preferable.

  When it is necessary to improve the drop strength, puncture strength, and gas barrier properties of the packaging bag 200, an intermediate layer can be interposed between the base film layer and the sealant layer. As the intermediate layer, a gas barrier film can be used in addition to the same film as the base film layer.

  As the gas barrier film, an inorganic oxide vapor-deposited film can be used in addition to an ethylene-vinyl alcohol copolymer or nylon MXD6 film having a gas barrier property on the resin itself.

  As an inorganic oxide vapor deposition film, a vapor deposition anchor agent is applied to a vapor deposition substrate film to provide a vapor deposition anchor coat layer, an inorganic oxide is vapor-deposited on the surface, an inorganic oxide vapor deposition layer is provided, and a barrier protective layer is further provided. Those formed by coating are preferably used.

  For the vapor deposition base film, a stretched film of polyester or nylon is preferably used. The vapor deposition anchor coat layer is provided by applying a composite such as trifunctional organosilane, acrylic polyol, and isocyanate compound.

  The inorganic oxide deposited layer is a layer on which an inorganic oxide such as aluminum oxide, silicon oxide, tin oxide, magnesium oxide, or a mixture thereof is deposited, and a layer on which aluminum oxide or silicon oxide is deposited is particularly preferable. The thickness is preferably 5 to 300 nm.

  The barrier property protective layer is a layer that improves the barrier property at the same time as protecting the inorganic oxide vapor deposition layer that is easily cracked or cracked. And it is a coating film formed by applying and heating and drying a coating agent. The coating agent is an aqueous solution containing at least one of one or more metal alkoxides or hydrolysates thereof and a water-soluble polymer. It is said.

The metal alkoxide used for the coating agent is a general formula such as tetraethoxysilane [Si (OC ₂ H ₅ ) ₄ ], triisopropoxyaluminum [Al (O-2′-C ₃ H ₇ ) ₃ ], M (OR ) N (M: metal such as Si, Ti, Ai, Zr, R: alkyl group such as CH ₃ , C ₂ H ₅ ). Of these, tetraethoxysilane and triisopropoxyaluminum are preferable because they are relatively stable in an aqueous solvent after hydrolysis, and thus are easy to use.

  Examples of the water-soluble polymer used in the coating agent include polyvinyl alcohol, polyvinyl pyrrolidone, starch, methyl cellulose, carboxymethyl cellulose, sodium alginate, and the like. Especially when polyvinyl alcohol is used, the gas barrier property is most excellent.

  Polyvinyl alcohol is obtained by saponifying polyvinyl acetate, ranging from so-called partially saponified polyvinyl alcohol in which several dozen percent of acetate groups remain to completely saponified polyvinyl alcohol in which only several percent of acetate groups remain. Including, but not limited to. As the solvent for the aqueous solution, water or a mixed solvent of water and alcohol is used.

FIG. 3 is an explanatory view schematically showing a packaging bag used in an example of the package of this example. (A) is a top view. (B) is a longitudinal cross-sectional view of the center.
FIG. 4 is an enlarged view of a portion X surrounded by a circle in FIG.

  FIGS. 3A and 3B show an empty packaging bag 200 before filling the stored items. A top seal portion 21 and a side seal portion 22 are provided, and the ground seal portion is open and serves as a filling port for stored items.

  And on the front film 20a, a folding hook 23 projecting outward in parallel with the top seal portion is provided near the top seal portion 21 over the entire width. A peelable tape material 24 is inserted into the upper folded portion 23a and the lower folded portion 23b of the folded collar portion 23 over the entire width.

  The peelable tape material 24 is composed of heat-sealable resin layers 24a and 24b on both sides, and one of the resin layers 24a is difficult to peel off when heat-sealed with the sealant layer of the surface film 20a. Made of resin.

  The other resin layer 24b has releasability when heat-sealed with the sealant layer of the surface film 20a, and when the packaging bag 200 is heated in a microwave oven, it peels off due to an increase in internal pressure due to water vapor or the like. It consists of an easily peelable resin layer.

  As the easily peelable resin, when the sealant layer of the packaging bag 200 is polypropylene, for example, a block polypropylene copolymer or a random polypropylene copolymer is preferably used.

  Here, a typical example of the block polypropylene-based copolymer is a polypropylene-polyethylene block copolymer, and a typical example of the random polypropylene-based copolymer is a propylene-ethylene random copolymer.

The peelable tape material 24 inserted into the turn-up collar portion 23 is sandwiched between the front film 20a and the back film 20b by the inverted concave central pattern seal portion 25, the left and right pattern seal portions 26, and the side seal portions 22. It is heat-sealed. Moreover, in the lower end part area | region of the peelable tape material 24, as shown to Fig.3 (a), you may heat-seal with the point seal | sticker part 27 provided in the center pattern seal | sticker part 25. FIG.

  As shown in the enlarged view of FIG. 4, the upper end region of the peelable tape material 24 extends longer than the upper folded portion 23 a folded in a V shape in the central pattern seal portion 25. And in the extended part, one resin layer 24a of the peelable tape material 24 is heat-sealed to the sealant layer of the surface film 20a.

  A region surrounded by the folded portion of the central pattern seal portion 25 and the folded hook portion 23 is an unsealed portion, and a steam vent hole 28 is provided in the unsealed portion. The vapor vent hole 28 may be provided by a notch as shown in the figure, or may be provided by a through hole. Further, the vapor vent hole 28 can be provided so as to penetrate through the upper folded portion 23a, the peelable tape material 24, and the lower folded portion 23b that overlap each other.

  As described above, since the steam venting mechanism is provided, the packaging bag 200 filled with the stored items and sealed with the ground seal portion is heated to increase its internal pressure when heated in a microwave oven. When the internal pressure rises and swells, a force is applied so as to peel off the seal of the central pattern seal portion 25 provided between the left and right pattern seal portions 26 of the folded hook portion 23.

  Therefore, in the central pattern seal portion 25, the seal recedes from the inner side and peels between the other resin layer 24b made of the easily peelable resin layer of the peelable tape material 24 and the sealant layer of the surface film 20a. The unsealed portion surrounded by the central pattern seal portion 25 communicates with the bag storage portion. Then, gas such as steam generated by heating escapes from the steam vent hole 28 and the packaging bag 200 does not swell any more and can be cooked.

  When the packaging bag 200 is stored and the outer box 100 is boxed, the package of this example as shown in FIG. 1 is completed.

FIG. 5 is an explanatory view schematically showing a state in which the cut-off opening is cut off in an example of the package of the present invention.
FIG. 6 is an explanatory view schematically showing a state in which a packaging bag used in an example of the packaging body of the present invention is inflated.

  In order to cook the package of this example with a microwave oven, first, the left side plate 4 of the opening 13 is cut off from the cut line 12 where the boundary line between the left side plate 4 and the bottom plate 3 is provided. The left sticking face plate 5 is lifted together to cut the two easy-to-cut lines 11, and the separation opening 13 is separated from the upper surface plate 1 and the right surface plate 2.

  At the boundary line between the right side plate 2 and the bottom plate 3, the two easy cutting lines 11 are continuous by the vertical easy cutting lines 11, so that the separation opening 13 can be separated. In this way, a package with the cut-off opening 13 cut off as shown in FIG. 5 is completed.

  The package body from which the separation opening 13 has been separated is installed in the microwave oven. At this time, the packaging body is placed with the separation opening 13 facing upward, whereby the packaging bag 200 also has the vapor vent hole 28 on top. When the package is cooked in a microwave oven in such a state, the temperature of the stored item increases and water vapor is generated. Moreover, the head space gas in the packaging bag 200 also expands.

  As a result, the packaging bag 200 expands as shown in FIG. When the packaging bag 200 swells, in the central pattern seal portion 25, between the other resin layer 24b made of the easily peelable resin layer of the peelable tape material 24 and the sealant layer of the front film 20a, from the side closer to the bag storage portion. The unsealed portion surrounded by the central pattern seal portion 25 communicates with the bag storage portion.

  Then, gas such as steam generated by heating escapes from the vapor vent hole 28 and the packaging bag 200 does not swell any further, and the package bag 200 does not break, and the stored item is cooked. Is done.

  At this time, since the separation opening is arranged so as to avoid the position facing the vapor vent hole 28, the inside of the microwave oven is not polluted even if the stored item is ejected during heating. Moreover, since the packaging bag 200 is placed flat and heated, there is no uneven heating.

  In addition, since the outer box 100 is provided with a crease that swells the outer box 100 in synchronism with the swelling of the packaging bag 200 due to heating, even if the packaging bag 200 expands due to heating, the outer box 100 Since it can easily rise and swell, the packaging bag 200 is not subjected to excessive stress and the outer box 100 is not torn. And it can return to the shape before heating the exterior box 100 with the shrinkage | contraction after completion | finish of the heating of the packaging bag 200. FIG.

  And since it heat-cooks with the microwave oven with the exterior box 100, when taking out from a microwave oven, there is no danger, without touching the packaging bag 200 which is hot. Further, since the separation opening 13 is provided in a horizontal band shape from the upper surface to the left and right side surfaces of the outer packaging box and opened, the side seal portion which is not heated even when the packaging bag 200 is taken out from the outer packaging box 100. It can be taken out with 22 etc. and there is no danger.

DESCRIPTION OF SYMBOLS 100 ... Outer box 1 ... Top plate 2 ... Right side plate 3 ... Bottom plate 4 ... Left side plate 5 ... Left sticking face plate 6 ... Back sticking face plate 7 ... Front sticking face plate 8 ... rear side face plate 9 ... front side face plate 10 ... sticking piece 11 ... easy cutting line 12 ... cut line 13 ... separation opening 14 ... top face plate Folded line 15 ... Bottom plate folded line 200 ... Packaging bag 20a ... Front film 20b ... Back film 21 ... Top seal part 22 ... Side seal part 23 ... Folding collar part 23a ... Upper folded part 23b ... Lower folded part 24 ... Releasable tape materials 24a, 24b ... Resin layer 25 ... Center pattern seal part 26 ... Left and right pattern seal part 27 ... Point seal part 28 ... Vapor vent hole

Claims (3)

A package that is composed of an outer box and a packaging bag, and cooks the contents of the packaging bag while the packaging bag is stored in the outer box,
The packaging bag is flat, and the packaging bag is provided with a steam vent hole that is peeled off and communicated with the outside air by the internal pressure of the gas generated by heating,
From the upper surface of the outer box to the left and right side surfaces, in the form of a strip in the lateral direction, a separation opening that can form an opening is provided,
The packaging bag is housed in the outer box in a flat posture, and so that the vapor vent hole faces the upper surface,
The packaging body characterized in that the separation opening is arranged so as to avoid a position facing the vapor vent hole, and the inner surface of the outer box covers the upper surface of the vapor vent hole.   The package according to claim 1, wherein the outer box is provided with a crease that bulges the outer box in synchronism with the swelling of the packaging bag accompanying heating.   The package according to claim 1 or 2, wherein a crease that is folded outward when the heated packaging bag is taken out is provided on a bottom surface of the outer box.

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