JP6031738B2 - Carton for exterior and heating cooking method using the same - Google Patents

Description

  The present invention relates to an outer carton for storing sealed packaged food that is cooked in a microwave oven or the like.

  In recent years, many types of packaged foods in which cooked or semi-cooked foods are filled and sealed in a packaging bag made of a laminated packaging material and cooked in a microwave oven immediately before eating are sold. There are various packaging forms of these packaged foods, for example, a packaging form in which the food is filled and sealed in a packaging bag, or a double packaging form in which the food is sealed in a packaging bag and stored in an outer carton. and so on.

  The packaging bag to be used is ruptured or blown out by the internal pressure of the steam generated from food during cooking with a microwave oven, etc. Proposals have been made to prevent this. For example, a proposal to insert an easy peel tape into the upper palm seal portion on the upper surface of the packaging bag, and when the internal pressure of the packaging bag rises, the palm seal portion partially peels off via the easy peel tape, thereby removing the steam. In addition, there is a proposal that the width of the heat seal portion of the bag is narrowed so that it can be easily peeled off.

  Recently, a product in which a double-packed form in which a packaging bag having a steam release function is housed in an outer carton is cooked as it is in a microwave oven is commercially available.

  As an example of a commonly used exterior carton, a carton as shown in FIGS. 15 and 16 is used.

  FIG. 15 is a perspective explanatory view from the rear plate 12 side showing an example of a normal exterior carton 90. A perforation line D is formed on the front plate 16 and the side plate 14, and a lateral fold line A is formed on the rear plate 12.

  FIG. 16 is a perspective explanatory view showing an example of a state in which a normal exterior carton is opened in a form that bisects the lid 1 and the main body 2. That is, the perforation line D of the outer carton is broken, opened, and divided into the cover body portion 1 and the main body portion 2 to show the state where the steam release packaging bag 30 is exposed.

  An example of the state of cooking by heating in such a carton using such an exterior carton is shown in FIGS.

  FIG. 17 is an explanatory view showing an example of a state in which the exterior carton of FIG. 16 is set in a microwave oven. The lid part 1 and the main body part 2 are independent in an unstable state.

  FIG. 18 is an explanatory view showing an example of a state where the exterior carton of FIG. 17 is cooked in a microwave oven. Since the lid part 1 and the main body part 2 are self-supporting in an unstable state, the lid is closed due to the displacement of the packaging bag 30 during heating or the turntable vibration in the microwave oven. There is a case. This is intended to close the lid portion 1 due to displacement as shown in the figure in order to return to the original state due to the repulsion of the paper due to the lid portion 1 being bent. When such a phenomenon occurs, the steam discharged from the steam vent of the packaging bag 30 is not stably discharged to the outside, and the carton itself becomes hot due to burns caused by the steam or when the carton is filled with steam. In addition, the contents of the steam vent are blocked by the lack of sufficient inclination, which may cause the packaging bag to break or contamination of the microwave oven due to leakage of the contents from the steam vent. The problem occurs.

  Proposals have been made to solve such problems.

  For example, two perforations at a predetermined position on the top and two perforations formed by arranging a plurality of predetermined perforations at predetermined intervals are relative to each other and the perforations are relative to each other. Are formed so as to be closed and connected, and after extending from one point of the periphery of the top part to the inside of one perforation line, it is folded back to form an opening part partitioned by a convex perforation line extending to the other point of the periphery There is a proposal of an outer carton (Patent Document 1).

  When the internal pressure of the packaging bag rises and swells due to heating, the cut line of the top is cut by the pressure of the swell, and the top (top plate) is lifted upward. Although steam escapes from the opening, there are problems such as taking time and trouble to take out the packaging bag from the outer carton.

  Further, in order to place the packaging bag inclined at a certain angle, a perforation line that extends across the top surface of the outer packaging box and extends to the side surface is provided, and a folding line is formed at a position that extends in the lateral direction of the perforation line on the bottom surface. In addition, a fold line is provided in parallel with the fold line, and a perforation line is formed between the two parallel fold lines, the perforation line is opened, and the opening is set to the height of the highest part. There is a proposal of an exterior carton provided with a holding part composed of a lid part for keeping (Patent Document 2).

  In this proposal, a microwave heating element that absorbs microwaves and generates heat is attached to the upper end portion of the packaging bag, and an opening is provided at that portion. This is a proposal for a position where microwaves are not obstructed and are easily irradiated. The internal pressure of the packaging bag rises, the position of the packaging bag shifts, the vibration of the turntable in the microwave oven, etc., the holding part consisting of the lid part of the carton becomes unstable, and the lid part opens the opening part. There is a problem of closing. The packaging bag may rupture, contaminating the inside of the microwave oven, and causing problems such as burns.

  The exterior carton to be used is also required to have a function that can stably discharge the discharged steam to the outside, and can be safely cooked without contamination in the microwave oven.

JP 2007-290764 A Utility Model Registration No. 2558213

  In view of the above-described background art, an object of the present invention is to provide an exterior carton that can stably discharge steam discharged from a packaging bag during cooking with a microwave oven and stably hold the packaging bag.

  In order to solve the above problems, the inventors have intensively studied and completed the present invention.

The invention according to claim 1 of the present invention is an exterior carton that contains a packaging bag having a steam vent for extracting steam generated from the contents during cooking.
The glue margin piece, the rear plate, the side plate, the front plate, and the second side plate are successively connected via a lateral fold line,
A rear plate edge piece is connected to each lateral edge of the rear plate via a vertical fold line, and a folded piece is connected to each lateral edge of the side plate via a vertical fold line. And
A front plate edge piece is connected to both lateral edges of the front plate via a vertical fold line, and a fold piece is connected to each lateral edge of the second side plate via a vertical fold line. Each connected ,
The front SL front plate, perforated line is formed extending in the other point of peripheral edges opposed from one point of the periphery that Katayose on one side from the center portion of the front plate,
The perforation line is perforated so that the vicinity of the center portion is convex toward the center portion of the front plate, and the side plate surface and the second side plate surface are cut vertically to bisect each.
In the rear plate, a convex cut portion is defined by a second perforation line at a position opposite to the convex shape,
A front carton for assembling a blank in which the front end and the end of the second perforation line are each formed with a longitudinal second fold line connecting the cut line that bisects the adhesive margin piece and the perforation line of the side plate surface. And
Bent along transverse bending lines, are bonded in a state where the back surface of the became heavy surface and a second side plate of the margin piece, the rear surface plate, side plates, a front plate, is flat second side plate a tubular shape body, bent along the longitudinal direction of the fold line, the rear plate edge piece, front plate edge strip, and folding pieces are adhered to each other, that both end opening portions of the tubular body is closed It is a featured carton for exterior.

In the invention according to claim 2 of the present invention, the glue piece, the rear plate, the side plate, the front plate, and the second side plate are sequentially connected via a lateral fold line,
A rear plate edge piece is connected to each lateral edge of the rear plate via a vertical fold line, and a folded piece is connected to each lateral edge of the side plate via a vertical fold line. And
A front plate edge piece is connected to both lateral edges of the front plate via a vertical fold line, and a fold piece is connected to each lateral edge of the second side plate via a vertical fold line. Each connected ,
Lateral width of the front SL front plate is formed narrower than the lateral width of the rear face plate,
The front plate is formed with a perforation line extending from one point of the periphery offset to the one side from the center portion of the front plate to the other point of the opposite periphery,
The perforation line is perforated so that the vicinity of the center portion is convex toward the center portion of the front plate, and the side plate surface and the second side plate surface are cut vertically to bisect each.
The rear plate is an exterior carton that assembles a blank formed with a third fold line in the longitudinal direction that connects the perforation line of the side plate and a cut line that bisects the adhesive margin piece,
Bent along transverse bending lines, are bonded in a state where the back surface of the became heavy surface and a second side plate of the margin piece, the rear surface plate, side plates, a front plate, is flat second side plate a tubular shape body, bent along the longitudinal direction of the fold line, the rear plate edge piece, front plate edge strip, and folding pieces are adhered to each other, that both end opening portions of the tubular body is closed It is a featured carton for exterior.

  The invention according to claim 3 of the present invention is the exterior carton according to claim 1, wherein the width of the front plate in the horizontal direction is narrower than the width of the rear plate in the horizontal direction.

  The invention according to claim 4 of the present invention is a cooking method using the exterior carton according to any one of claims 1 to 3.

According to the first aspect of the present invention, the perforation line formed on the front plate, the side plate, and the second side plate is used to open the exterior carton, and bisects the lid body portion and the main body portion. Is. In particular, the reason for forming the centered portion of the front plate at one side from the center is to make the centered region a lid after opening.

  In order to open the lid part better, the perforation line of the front plate is connected to the side plate and the second side plate and cut longitudinally. Generated from the packaging bag by unfolding the opened lid body with the second fold line as the support shaft, acting as a holding part to support the main body, and placing the steam vent at the top of the packaging bag upward The steam to be discharged is stably discharged outward.

  On the rear plate, a convex cut portion is defined by a second perforation line at a position opposite to the convex shape of the front plate, and a cut is made to bisect the adhesive margin pieces from the tip and end of the second perforation line, respectively. A vertical second fold line that connects the line and the perforated line on the side plate surface is formed. When the lid is folded, the notch protrudes inward of the main body and contacts the packaging bag accommodated in the outer carton, thereby maintaining the inclination of the packaging bag and preventing displacement. be able to. In addition, it is possible to prevent displacement of the lid and the main body caused by swelling due to an increase in the internal pressure of the packaging bag, vibration of the turntable, and the like.

  This will be described in more detail. When cooking in a microwave oven, the carton is opened, the lid is bent with the second fold line of the rear plate as the support axis, bent into a U-shape, valley-folded, and the packaging that is the contents Expose the bag. The convex cut portion of the rear plate that forms the bent lid portion automatically protrudes toward the inside of the carton, and comes into contact with the packaging bag and becomes a force for holding the packaging bag. For example, it is possible to prevent the packaging bag from expanding and being displaced during cooking, or from being shifted from a predetermined position due to vibrations caused by the turntable. Moreover, the position shift | offset | difference of a cover body part and a main-body part can be prevented with the force holding a packaging bag. Therefore, it can be used as an exterior carton excellent in self-supporting property that does not cause burns caused by steam or contaminate the inside of the microwave oven.

  According to the second aspect of the present invention, the top portion of the lid portion can be inclined because the width in the lateral direction of the front plate is narrower than the width in the lateral direction of the rear plate. That is, the lid body portion having the top portion inclined downward from the rear plate side to the front plate side is bent with the folding line of the rear plate as a supporting shaft, bent into a dogleg shape, valley-folded, and the lid By making the body part self-supporting forward, the self-supporting property of the exterior carton is enhanced. The folded lid body part can overcome the force of returning to the original position by the repelled bending, and the lid body part can be prevented from returning. Therefore, it can be used as an exterior carton excellent in self-supporting property that does not cause burns caused by steam or contaminate the inside of the microwave oven.

  According to a third aspect of the present invention, in the exterior carton according to the first aspect, the lateral width of the front plate is narrower than the lateral width of the rear plate. The top part of the lid part is inclined downward from the rear plate side to the front plate side, and the folding part is formed on the rear plate, thereby holding the packaging bag during cooking and the lid part and the main body. Can be used as an exterior carton with excellent independence to prevent position shift.

  According to a fourth aspect of the present invention, there is provided a cooking method using the exterior carton according to any one of the first to third aspects. The exposed packaging bag can be cooked in a stable state. This is an exterior carton that prevents misalignment of the lid and the main body caused by swelling of the packaging bag during cooking and vibration caused by rotation of the turntable. There is no problem such as burns because the steam discharged from the steam vent of the packaging bag is stably discharged outward. Moreover, there is no problem of contaminating the inside of the microwave oven due to leakage due to bumping of the contents. An exterior carton that can stably hold a packaging bag even during cooking.

It is plane | planar expansion explanatory drawing which shows an example of the blank 8 before the assembly of the exterior carton of Claim 1. FIG. 2 is a perspective explanatory view from the front plate side showing an example of an exterior carton in which a blank 8 shown in FIG. 1 is assembled and a packaging bag is accommodated. It is a perspective explanatory view from the rear plate side of the carton for exterior of FIG. FIG. 3 is a perspective explanatory view showing a state in which the exterior carton of FIG. 2 is divided into a main body part and a lid part. FIG. 5 is a perspective explanatory view showing an example of a state where the exterior carton of FIG. 4 is set in a microwave oven. FIG. 6 is a perspective explanatory view showing an example of a state where the exterior carton of FIG. 5 is cooked with a microwave oven. It is plane | planar expansion explanatory drawing which shows an example of the blank 9 before the assembly of the exterior carton of Claim 2. FIG. 8 is a perspective explanatory view from the front plate side showing an example of an exterior carton in which the blank 9 of FIG. 7 is assembled and a packaging bag is accommodated. It is a perspective explanatory view from the rear plate side of the carton for exterior of FIG. FIG. 9 is a cross-sectional explanatory view showing an example of the lid body part of FIG. 8. It is explanatory drawing which shows an example of the state which set the carton for exterior of FIG. 8 with the microwave oven. It is explanatory drawing which shows an example of the state which heat-cooked the exterior carton of FIG. 11 with the microwave oven. It is plane expansion explanatory drawing which shows an example of the blank 10 before the assembly of the exterior carton of Claim 3. It is explanatory drawing which shows an example of the state which assembled the blank 10 of FIG. 13 and heated the exterior carton which accommodated the packaging bag with the microwave oven. It is a perspective explanatory view from the back plate side which shows an example of the usual carton for exterior. 15 is an explanatory perspective view showing an example of a state in which the outer carton is divided into a lid part and a main body part. It is a perspective view which shows an example of the state which set the carton for exterior of FIG. 16 with the microwave oven. It is a perspective view which shows an example of the state which heat-cooked the exterior carton of FIG. 17 with the microwave oven.

  Hereinafter, embodiments for carrying out the present invention will be described.

FIG. 1 is a developed explanatory view showing an example of a blank 8 before assembling the exterior carton 60 according to claim 1. The adhesive margin piece 11, the rear face plate 12, the side face plate 14, the front face plate 16, and the second side face plate 18 are sequentially connected via a lateral fold line A,
The rear plate edge pieces 13 are respectively connected to both lateral edges of the rear plate via a vertical fold line A ′.
Folding pieces 15 are respectively connected to both lateral edges of the side plate 14 via vertical folding lines A ′.
Front plate edge pieces 17 are respectively connected to both lateral edges of the front plate 16 via vertical folding lines A ′.
Folding pieces 15 are connected to both lateral edges of the second side plate 18 via vertical folding lines A ′.
The front plate 16 is formed with a perforation line D extending from one point of the peripheral edge offset to one side to the other point of the opposite peripheral edge. The perforation line D has a convex shape in the vicinity of the central portion toward the central portion of the front plate. 19 and the side plate surface 14 and the second side plate surface 18 are vertically cut so as to bisect each. The perforation line D bisects the lid 1 and the main body 2. On the rear plate, a convex notch 20 is defined by a second perforation line D ′ at a position opposite to the convex shape 19 of the front plate, and glue is formed from the front end and the end of the second perforation line D ′. A vertical second fold line B is formed so as to connect the cut line E of the marginal piece 11 and the perforation line D of the side plate surface 14.

Margin strip 11 along transverse fold line A, the rear plate 12, side plates 14, front plate 16, sequentially folding the second side plate 18, the front and back of the second side plate 18 of the margin strips 11 By stacking and adhering, assembling into a flat cylindrical sleeve, and then storing the steam-release packaging bag, by opening and closing the opening portions at both ends of the cylindrical sleeve by sequentially bending and bonding each edge piece and folding piece, and assembling 2 and 3, an exterior carton in which a steam release packaging bag is accommodated is obtained.

  FIG. 2 is a perspective explanatory view from the front plate 16 side showing an example of the exterior carton 60 in which the blank 8 shown in FIG. 1 is assembled and the packaging bag 30 is accommodated. The front plate 16 is formed with a perforation line D extending from one point of the peripheral edge offset to the top 3 side to the other point of the opposing peripheral edge. The perforation line D has a convex shape 19 in the vicinity of the central part toward the central part 19. In addition, the side plate surface 14 and the second side plate surface 18 are vertically cut so as to bisect each. By opening the perforation line D, the lid body portion 1 and the main body portion 2 are divided into two.

  3 is a perspective explanatory view from the rear plate 12 side of the exterior carton of FIG. A convex notch 20 is defined by a second perforation line D ′ on the rear surface plate 12 at a position opposite to the convex shape 19 when formed on the front plate 16, and the tip of the second perforation line D ′. A vertical second fold line B is formed so as to be connected to the cut line E of the adhesive margin piece 11 and the perforation line D of the side plate surface 14 from the end.

  FIG. 4 is a perspective explanatory view showing a state in which the exterior carton of FIG. 2 is divided into a main body part and a lid part. A steam release packaging bag 30 is accommodated in the outer carton. After pressing and breaking the convex perforation line D formed on the front plate 16, the perforation line D of the side plate 14 and the second side plate 18 is broken, and the second folding line B of the rear plate 12 is used as a support shaft. It shows a state where it is bent in the direction of the rear plate 12 and divided into a cover body portion 1 and a main body portion 2. At this time, the cut portion 20 protrudes toward the inside of the main body portion, contacts the lower surface side of the steam release packaging bag 30, and holds the packaging bag 30.

  FIG. 5 is an explanatory perspective view illustrating an example of a state in which the exterior carton of FIG. 4 is set in a microwave oven. The state mounted in the turntable 40 before cooking with a microwave oven is shown. The notch part 20 which contacts the steam-release packaging bag 30 contacts from the lower surface side of the packaging bag 30 and can maintain the holding and the inclination of the packaging bag 30 and also prevent the positional displacement of the packaging bag.

  FIG. 6 is a perspective explanatory view showing an example of a state in which the exterior carton of FIG. 5 is cooked with a microwave oven. When the packaging bag is swelled by heating, the cut portion 20 comes into closer contact with the steam-depleted packaging bag 30, so that the packaging bag swells due to an increase in the internal pressure of the packaging bag 30 during cooking with a microwave oven. In addition, it is possible to prevent the positional deviation of the packaging bag 30 caused by the vibration caused by the rotation of the turntable 40. Further, the displacement of the lid 1 and the main body 2 can be prevented by the holding force.

  FIG. 7 is a plane development explanatory view showing an example of the blank 9 before assembling the exterior carton 70 according to claim 2. The width of the front plate 16 in the horizontal direction is narrower than the width of the rear plate 12 in the horizontal direction. Further, the rear plate 12 is formed with a vertical third fold line C that connects a perforation line D formed on the side plate 14 and a cut line E formed on the adhesive margin piece.

Margin strip 11 along transverse fold line A, the rear plate 12, side plates 14, front plate 16, sequentially folding the second side plate 18, the front and back of the second side plate 18 of the margin strips 11 They are bonded together and assembled into a flat cylindrical sleeve, and then a steam release packaging bag is accommodated, and the opening portions at both ends of the cylindrical sleeve are closed and assembled by bending and bonding the edge pieces and the folding pieces in order. The exterior carton 70 in which the steam release packaging bag 30 as shown in FIGS.

  FIG. 8 is a perspective explanatory view from the front plate 16 side showing an example of the exterior carton 70 in which the blank 9 of FIG. 7 is assembled and the packaging bag 30 is accommodated. The width of the front plate 16 in the horizontal direction is narrower than the width of the rear plate 12 in the horizontal direction. As a result, the top 3 of the lid 1 is inclined downward from the rear plate 12 side to the front plate 16 side. Further, a perforation line D is formed extending from one point of the peripheral edge offset from the central portion of the front plate 16 to the other point of the opposite peripheral portion, and the vicinity of the central portion D is in the vicinity of the central portion toward the central portion of the front plate. It is a convex shape 16 and is drilled so as to bisect each of the side plate surface 14 and the second side plate surface 18. The perforation line D can be divided into the lid body portion 1 and the main body portion 2.

  FIG. 9 is a perspective explanatory view from the rear plate 12 side of the exterior carton of FIG. The rear surface plate 12 is connected to the perforation line D of the side surface plate 14 and the cut line E of the adhesive margin piece 11 by a third bending line C in the vertical direction.

  FIG. 10 is a cross-sectional explanatory view showing an example of the lid 1 of FIG. It forms so that the inclination angle b of the top part 3 formed from the back surface plate 12 and the front surface plate 16 may be 90 degrees or less. This is the blank 9 shown in FIG. 7, which can be produced by forming the width of the front plate 16 in the lateral direction narrower than the width of the rear plate 12 in the horizontal direction. The inclination angle a of the top shown in FIG. 10 is 90 ° −angle b.

  FIG. 11 is an explanatory diagram showing an example of a state in which the exterior carton of FIG. 8 is set in a microwave oven. After being divided into the lid part 1 and the main body part 2, it is in a state of being placed on the turntable 40 in the microwave oven. Since the top part 3 of the lid part 1 is inclined at this time, the state of being placed on the plane of the turntable 40 is self-supporting in a state of being bent forward as shown in FIG. As shown in FIG. 10, the inclination angle b is smaller than 90 °, and the angle c between the rear plate 12 and the turntable 40 is 90 ° or more. Therefore, as shown in FIG. 11, the lid body portion 1 is self-supporting in the front-turned state. The positional deviation of the lid body 1 can be prevented. In particular, by setting the inclination angle b to 90 ° or less, it is possible to prevent the positional deviation of the lid portion 1 and the positional deviation of the main body portion 2.

  Further, the inclination angle b for preventing the positional deviation of the lid 1 and the main body 2 is more effective as it is smaller, but is preferably 78 ° to 87 °. This is preferable from the standpoint of placing on a turntable, self-supporting property during heating, and appropriate box making.

  FIG. 12 is an explanatory diagram showing an example of a state in which the exterior carton of FIG. 11 is heated in a microwave oven. In order for the lid part 1 to be stable and independent, the positional deviation of the lid part 1 and the main body part 2 caused by swelling of the packaging bag during cooking by heating in a microwave oven or vibration due to rotation of the turntable is prevented. can do.

  FIG. 13 is a plane development explanatory view showing an example of the blank 10 before assembling the exterior carton according to claim 3. In the blank 8 shown in FIG. 1, the width of the front plate 16 in the horizontal direction is narrower than the width of the rear plate 12 in the horizontal direction.

FIG. 14 is an explanatory view showing an example of a state where the blank of FIG. 13 is assembled and the exterior carton 80 containing the packaging bag is cooked in a microwave oven. The folded lid portion 1 holds the main body portion 2, and the cut portion 20 formed in the rear plate 16 holds the packaging bag 30. This is an exterior carton 80 that holds the packaging bag 30 during cooking and is excellent in self-supporting property so that the positional deviation of the lid 1 and the main body 2 does not occur.

  Further, the present invention will be described in detail.

  The blanks 8, 9, and 10 are assembled into a cylindrical sleeve. As a representative example, a blank 8 shown in FIG. As an assembling procedure, the adhesive margin piece 11, the rear surface plate 12, the side surface plate 14, the front surface plate 16, and the second side surface plate 18 are sequentially bent along the lateral folding line A, and the surface of the adhesive margin piece 11 is moved to the second side. The flat plate sleeve 18 is laminated and adhered to the back surface of the face plate 18 to assemble it into a flat cylindrical sleeve. For this operation, a generally known gluing machine called a sack machine can be used. The blanks 9 and 10 can be similarly performed.

  Next, if necessary, the cylindrical sleeve is raised, for example, while inserting the steam release packaging bag 30 containing the retort food into the sleeve, the opening portions at both ends are sequentially folded at the edge pieces and the folding pieces, It can be assembled by closing with an adhesive or the like. An exterior carton 60 containing a steam release packaging bag is formed.

  The assembled exterior carton is pushed and broken at the portion of the perforated line 19 formed on the front plate 16 and then broken along the perforated line D, and the lid 1 is bent to the second side of the rear plate 12. The line B is bent around the support shaft and folded into a valley, and is bisected into the lid portion 1 and the main body portion 2. The lid part 1 and the main body part 2 are connected via a second fold line B.

  At this time, the convex folded portion 20 formed on the rear plate protrudes toward the inside of the sleeve and contacts the lower surface side of the packaging bag 30. The packaging bag 30 can be stably held. It can be cooked stably in a microwave oven.

  The blank 9 is assembled in the same manner as the blank 8 to create an exterior carton 70. A portion of the convex 19 formed on the front plate 16 is pushed and broken, and then broken along the perforation line D, and the lid 1 is bent with the third fold line C of the rear plate 12 as a support shaft and is valley-folded. The lid part 1 and the main body part 2 are divided into two parts. Since the top part 3 of the lid part 1 is inclined, when the lid part 1 is placed on the turntable 40 in the microwave oven, the lid part 1 is self-supporting in the front-turned state, and the lid part 1 and the main body part 2. Can be prevented from being displaced.

  Also in the case of the blank 10, it can carry out similarly to the blank 8, and the positional shift of the packaging bag 30, the cover body part 1, and the main-body part 2 can be prevented.

As the paper layer used for the exterior carton of the present invention, a paperboard having a basis weight of 250 to 500 g / m ² can be used. A paperboard such as a coated ball or cardboard, or a cardboard paper can also be used.

  Also, it is possible to print a pattern, character expression, etc. on the surface of the paper layer. For printing, a commonly used printing method such as gravure printing, offset printing, flexographic printing, letterpress printing, and inkjet printing can be used.

  The fold line, the second fold line, and the third fold line that are formed on the blank can be formed by a generally known method of inserting ruled lines. In order to facilitate the bending, a lead ruled line including a cut line may be used. Particularly, the third fold line is preferably a lead ruled line. The perforation line and the second perforation line can also be formed by a generally known method using a known sewing machine blade.

  The outer carton of the present invention discharges the steam discharged from the packaging bag during cooking by heating in a microwave oven, and the packaging bag is caused by swelling of the packaging bag or vibration caused by rotation of the turntable 40. It is possible to prevent the positional deviation and the positional deviation of the lid part and the main body part. Therefore, it is possible to provide a carton for the exterior that is free from the problem of burns and is rich in safety.

DESCRIPTION OF SYMBOLS 1 Cover part 2 Main-body part 3 Top part 8 Blank of Claim 1 9 Blank of Claim 2 10 Blank of Claim 11 Adhesive piece 12 Rear plate 13 Rear plate edge piece 14 Side plate 15 Folding piece 16 Front plate 17 Front plate edge 18 Second side plate 19 Convex 20 Cut portion 30 Vapor-free packaging bag 40 Turntable 50 Vapor 60 Exterior carton 70 according to claim 1 70 Exterior carton according to claim 2 80 Carton for exterior as described 90 Normal carton for exterior A A fold line (lateral direction)
A 'fold line (longitudinal direction)
B Second fold line (longitudinal direction)
C Third fold line (longitudinal direction)
D Perforation line D 'Second perforation line E Cutting line a Inclination angle (top)
b Inclination angle (angle between rear plate and rear plate edge)
c Inclination angle (angle between rear plate and turntable)

Claims (4)

In an exterior carton that houses a packaging bag having a steam vent that vents steam generated from the contents during cooking,
The glue margin piece, the rear plate, the side plate, the front plate, and the second side plate are successively connected via a lateral fold line,
A rear plate edge piece is connected to each lateral edge of the rear plate via a vertical fold line, and a folded piece is connected to each lateral edge of the side plate via a vertical fold line. And
A front plate edge piece is connected to both lateral edges of the front plate via a vertical fold line, and a fold piece is connected to each lateral edge of the second side plate via a vertical fold line. Each connected ,
The front SL front plate, perforated line is formed extending in the other point of peripheral edges opposed from one point of the periphery that Katayose on one side from the center portion of the front plate,
The perforation line is perforated so that the vicinity of the center portion is convex toward the center portion of the front plate, and the side plate surface and the second side plate surface are cut vertically to bisect each.
In the rear plate, a convex cut portion is defined by a second perforation line at a position opposite to the convex shape,
A front carton for assembling a blank in which the front end and the end of the second perforation line are each formed with a longitudinal second fold line connecting the cut line that bisects the adhesive margin piece and the perforation line of the side plate surface. And
Bent along transverse bending lines, are bonded in a state where the back surface of the became heavy surface and a second side plate of the margin piece, the rear surface plate, side plates, a front plate, is flat second side plate a tubular shape body, bent along the longitudinal direction of the fold line, the rear plate edge piece, front plate edge strip, and folding pieces are adhered to each other, that both end opening portions of the tubular body is closed Characteristic carton for exterior. The glue margin piece, the rear plate, the side plate, the front plate, and the second side plate are successively connected via a lateral fold line,
A rear plate edge piece is connected to each lateral edge of the rear plate via a vertical fold line, and a folded piece is connected to each lateral edge of the side plate via a vertical fold line. And
Front plate edge pieces are connected to both lateral edges of the front plate via vertical fold lines,
Folding pieces are respectively connected to both lateral edges of the second side plate via vertical folding lines ,
Lateral width of the front SL front plate is formed narrower than the lateral width of the rear face plate,
The front plate is formed with a perforation line extending from one point of the periphery offset to the one side from the center portion of the front plate to the other point of the opposite periphery,
The perforation line is perforated so that the vicinity of the center portion is convex toward the center portion of the front plate, and the side plate surface and the second side plate surface are cut vertically to bisect each.
The rear plate is an exterior carton that assembles a blank formed with a third fold line in the longitudinal direction that connects the perforation line of the side plate and a cut line that bisects the adhesive margin piece,
Bent along transverse bending lines, are bonded in a state where the back surface of the became heavy surface and a second side plate of the margin piece, the rear surface plate, side plates, a front plate, is flat second side plate a tubular shape body, bent along the longitudinal direction of the fold line, the rear plate edge piece, front plate edge strip, and folding pieces are adhered to each other, that both end opening portions of the tubular body is closed Characteristic carton for exterior.   The exterior carton according to claim 1, wherein a width of the front plate in the horizontal direction is narrower than a width of the rear plate in the horizontal direction.   A heat cooking method using the exterior carton according to any one of claims 1 to 3.

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