JP2010269842A - Self-standing type bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-standing type bag where a plurality of housing chambers partitioned on the top and the bottom can easily be formed in the bag by making the bag stand by itself at the time of use, and a mounting area for housed articles can be formed wide in the housing chamber on the top, and in addition, can suitably be used for the heat treatment of the housed articles by securing air permeability between the top and bottom housing chambers. <P>SOLUTION: The self-standing type bag 10 includes: a bag body 15 composed of a pair of side walls 11 and 11, and a gusset-folded bottom wall 13; and an internal partitioning section 17 which partitions the inside of the bag body 15 into a plurality of housing chambers 31 and 32. The self-standing type bag has one or a plurality of the internal partitioning sections 17 which have communicating passages 43 in the bag body 15, and partition the inside of the bag into the plurality of housing chambers in the vertical direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a self-supporting bag having a pair of side wall portions and a bottom wall portion, and having a self-supporting portion formed on the bottom portion when the bottom wall portion is developed.

  Conventionally, many self-supporting bags are known in which a self-supporting portion is formed at the bottom of the bag body by deploying the bottom wall. For example, FIG. 3 and FIG. 4 of Patent Document 1 describe a self-supporting bag that can perform a heat treatment of the contents using a microwave oven. This self-supporting bag can be self-supporting when the bottom gusset is developed into a boat bottom shape.

  In use, the self-supporting bag of Patent Document 1 expands the bottom gusset into a boat bottom shape, accommodates a package body filled with water, and then accommodates a partition plate having a through hole. And the air permeability between the upper and lower storage chambers is ensured by the through holes provided in the partition plate.

  A container such as an item to be cooked is placed on the partition plate 4, and the opening at the top of the bag is closed and heated in a microwave oven. Then, water flows out from the packaging body to become steam, rises to the accommodation chamber on the partition plate through the through holes, and the contents are heated. When the pressure in the bag rises, the opening at the top of the bag opens and the steam flows out.

JP-A-63-131926

  However, in the self-supporting bag as described above, the partition plate has to be accommodated and installed in the bag at the time of use, and it takes time to heat the contents. In addition, since the partition plate has a large number of through holes and a gap between the partition plate and the inner wall of the self-supporting bag, when the flowable material is disposed on the partition plate, the flowable material remains as it is. And flowed down through the gap into the lower containment chamber. Therefore, for example, when heat-treating food, if the juice separates from the food and flows out onto the partition plate, it flows down into the lower storage chamber, and depending on the food, the flavor, texture, etc. may be reduced. It was.

  If there are no through holes or gaps in the partition plate so that fluid substances such as juice separated from food do not flow down, steam from the lower storage chamber cannot flow smoothly into the upper storage chamber. The desired heat treatment could not be performed.

  The present invention has been devised in view of the above circumstances, and by being self-supporting in use, it is possible to easily form a plurality of storage chambers that are partitioned vertically in the bag, and to load the storage items in the upper storage chamber. It is an object of the present invention to provide a self-supporting bag that can be widely formed and that can easily ensure air permeability between the upper and lower storage chambers and can be suitably used for heat treatment of the stored items.

  In order to achieve the above object, in the present invention, a bag body having a pair of side wall portions and a bottom wall portion developed by separating the pair of side wall portions is provided, and the bottom wall portion is developed. In the self-supporting bag in which a self-supporting portion is formed at the bottom of the bag body, the bag body includes a middle partition portion that partitions the interior of the bag body into a plurality of storage chambers in the vertical direction, and the middle partition portion communicates between the plurality of storage chambers. While having a communicating path, it develops by separating between a pair of side wall parts, and forms the mounting part of an accommodation thing.

  According to the above configuration, the intermediate partition portion is configured to be deployed by separating the pair of side wall portions so as to form the placement portion of the stored item. By forming the portion, it is possible to partition the plurality of storage chambers in the vertical direction by the middle partition portion, and it is possible to widely form the placement site of the stored items by the middle partition portion. In addition, since the inner partition portion has the communication passage, the air permeability between the upper and lower storage chambers can be secured, and water can be stored in the lower storage chamber and the storage can be placed on the mounting portion and heated. It is possible for steam from the storage chamber to flow into the upper storage chamber to heat the storage.

  According to the present invention, the inside of the bag body is provided with a middle partition portion that partitions the plurality of storage chambers in the vertical direction, and the middle partition portion has the communication path that communicates between the plurality of storage chambers, and between the pair of side wall portions. Since it is configured so as to be able to form a placement part of the stored item by being separated from each other, it is possible to easily form a plurality of storage chambers divided into upper and lower parts in the bag by being self-supporting in use. To provide a self-supporting bag that can be widely used in the storage chamber of the storage room, can be easily used for heat treatment of storage objects, and can easily ensure air permeability between the upper and lower storage chambers. Can do.

(A) is a front view of the self-supporting bag according to the first embodiment, (b) is a longitudinal sectional view of (a), (c) is a front view showing a state in which an item is accommodated, and (d) is (c) ) Is a cross-sectional view taken along the line AA, and FIG. FIG. 3 is a partial cross-sectional perspective view showing an accommodation opening of the self-supporting bag according to Embodiment 1. (A) is a front view of the self-supporting bag which concerns on Embodiment 2, (b) is a front view which shows the state which accommodated the stored item. It is a front view which shows the state which accommodated the stored article in the self-supporting bag which concerns on Embodiment 3. FIG. 6 is a longitudinal sectional view of a self-supporting bag according to Embodiment 4. FIG. (A) is a front view of the self-supporting bag according to the fifth embodiment, (b) is a longitudinal sectional view of (a), (c) is a front view showing a state in which an item is accommodated, and (d) is (c) ) Is a cross-sectional view taken along the line AA, and FIG. 5E is a cross-sectional view taken along the line BB in FIG. (A) is a longitudinal cross-sectional view of the self-supporting bag according to Embodiment 6, and (b) is a front view showing a state in which an item is accommodated. (A) is a front view of the self-supporting bag according to Embodiment 7, and (b) is a longitudinal sectional view of (a). (A) is a front view of the self-supporting bag according to the eighth embodiment, (b) is a longitudinal sectional view of (a), (c) is a front view showing a state in which an item is accommodated, and (d) is (c) ) Is a cross-sectional view taken along the line AA, and FIG. 5E is a cross-sectional view taken along the line BB in FIG.

  Hereinafter, several embodiments of the present invention will be described with reference to FIGS.

[Embodiment 1]
As shown in FIGS. 1A to 1E, a self-supporting bag 10 according to this embodiment is a self-supporting bag that can contain food and can be heat-treated in a microwave oven.

  As shown in FIGS. 1 (a) and 1 (b), the self-supporting bag 10 includes a pair of side wall portions 11 and 11 and a gusset-shaped bottom wall portion 13 that is folded so that it can be unfolded. The gusset-shaped intermediate partition portion 17 is arranged in the bag body 15 and joined to the pair of side wall portions 11, 11.

  The side wall part 11, the bottom wall part 13, and the middle partition part 17 are each made of a packaging material such as a flexible sheet or film. This packaging material can be appropriately selected according to the use of the self-supporting bag 10, for example, a single-layer or multilayer sheet or film made of a thermoplastic resin such as polyolefin such as polyethylene or polypropylene, paper, aluminum foil, or non-woven fabric. A laminated sheet or film provided with a layer.

  Each of the packaging materials constituting the side wall portion 11, the bottom wall portion 13, and the middle partition portion 17 may be composed of different packaging materials, and one side wall portion 11 and the other side wall portion 11 are the same continuous. The side wall parts 11 and 11 and the bottom wall part 13 may consist of the same continuous packaging material.

  The pair of side wall portions 11, 11 of the self-supporting bag 10 are formed in substantially the same shape, arranged so that one surface faces each other, and the entire length of both side edges is heat-sealed at the peripheral joint portion 19. .

  The bottom wall portion 13 of the self-supporting bag 10 has a gusset shape that is folded so as to be unfoldable, and is disposed at a position that becomes a bottom portion between the pair of side wall portions 11, 11. , 11 are heat sealed. Specifically, the bottom wall portion 13 is folded in two at a fold 23, and is disposed between the pair of side wall portions 11, 11 with the fold 23 facing upward, and one side and the other side are interposed via the fold 23. Each side wall portion 11 is joined to each side wall 11 in a predetermined shape, and both side edges in the bag width direction are joined together with the pair of side wall portions 11 and 11 at the peripheral edge joint portion 19 so as not to be separated.

  By joining the bottom wall portion 13 and the pair of side wall portions 11 and 11 in this way, as shown in FIGS. 1C and 1D, the width direction of the pair of side wall portions 11 and 11 is increased. When the centers are separated from each other, the bottom wall portion 13 of the gusset fold is developed to form a self-supporting portion 25.

  The partition part 17 of the self-supporting bag 10 is disposed at a middle position in the vertical direction between the pair of side wall parts 11, 11 and is joined to the bag body 15 by the peripheral joint part 19 and the side joint part 21. The pair of side wall portions 11 and 11 can be developed by separating the width centers.

  Specifically, the inner partition part 17 has a pair of side wall parts 11 in a mountain fold structure in which the packaging material has a linear fold line 24 along the bag width direction and the fold line 24 faces the bag opening side. , 11 are arranged. And the inner partition part 17 is joined by the side edge part 21 over the full length of the bag width direction, and the both ends of the crease | fold 24 are a pair of the lower edge part of the surface which opposes the side wall part 11 in the bag thickness direction both edge side. It is joined to the side wall parts 11 and 11 by a peripheral joint part 19 so as not to be separated.

  When the intermediate partition portion 17 and the pair of side wall portions 11 and 11 are joined in this manner, when the pair of side wall portions 11 and 11 are separated from each other and become self-supporting, FIGS. As shown in FIG. 5, the middle partitioning portion 17 is developed in a boat bottom shape, and a lower first storage chamber 31 and an upper second storage chamber 32 can be formed in the bag body 15. The middle partition portion 17 has a shape having a placement portion 37 for placing the contents 35 in the center and upper displacement portions 39 arranged at higher positions than the placement portion 37 on both sides.

  As shown in FIG. 1A, cut portions 41 are provided at both ends of the fold line 24 of the middle partition portion 17. As shown in FIGS. 1C and 1E, the notch 41 has the first accommodating chamber 31 and the first container 31 in the upper displacement portion 39 when the bag is in a self-supporting state and the partition 17 is deployed. 2 An upper communication passage 43 for communicating with the storage chamber 32 is formed. The upper communication passage 43 is a water injection passage through which water can be injected from the bag opening into the first storage chamber 31. When water becomes steam when the microwave oven is heated into the first storage chamber 31, the steam is A steam passage is formed to escape from the first storage chamber 31 to the second storage chamber 32.

  As shown in FIG. 2, the top of the self-supporting bag 10 includes a container opening 45 that can open the second storage chamber 32, and a fastener 47 that opens and closes the container opening 45. . The fastener 47 has a male fastener portion 49 and a female fastener portion 51, which will be described in detail later, and is fixed to each inner surface along the accommodation opening 45 of the pair of side wall portions 11 and 11.

  As shown in FIG. 1 (a), an exhaust opening 63 including a notch that crosses the peripheral joint 19 is provided near the top of the peripheral joint 19 on one side edge side of the self-supporting bag 10. The inside of the bag and the outside of the bag are configured to communicate with each other. Further, an easily peelable heat seal portion 65 in which the pair of side wall portions 11, 11 are formed so as to be easily peelable by an easy peel so as to be continuous from the peripheral joint portion 19 at an adjacent portion inside the exhaust opening 63. Is formed. Therefore, the exhaust opening 63 is airtightly closed by the easily peelable heat seal portion 65.

Next, the usage method of the self-supporting bag 10 having such a configuration will be described.
As shown in FIGS. 1 (a) and 1 (b), the self-supporting bag 10 is maintained in a compact shape with a pair of side wall portions 11 and 11 disposed close to each other before use. .

At the time of use, by separating the width centers of the lower half portions of the pair of side wall portions 11 and 11 from each other, the bottom wall portion 13 is developed, the self-standing portion 25 is formed, the middle partition portion 17 is developed, A first storage chamber 31 and a second storage chamber 32 are formed. In this case, as shown in FIG. 1A, air enters the first storage chamber 31 from the second storage chamber 32 through the notches 41 provided at both ends of the fold line 24 of the inner partition portion 17, so that the first Expansion of the storage chamber 31 is ensured.
When the pair of side wall parts 11 are sufficiently separated from each other, each side surface joining part 21 of the partition part 17 is formed in a substantially horizontal state in a self-standing state, so that the placement portion 37 of the partition part 17 is substantially horizontal. Widely deployed. At both ends of the middle partition portion 17, each end portion of the fold line 24 is joined by the peripheral joint portion 19, so that an upper displacement portion 39 that is higher than the placement portion 37 is formed.

  In the upper displacement part 39, an upper communication path 43 for communicating between the first storage chamber 31 and the second storage chamber 32 is formed by the cut portion 41. The upper communication passage 43 can act as a water injection passage through which water can be injected from the bag opening into the first storage chamber 31, and when water becomes steam when the microwave oven is heated into the first storage chamber 31, The steam becomes a steam passage for the steam to escape from the first storage chamber 31 to the second storage chamber 32.

  Next, in this state, water is stored in the first storage chamber 31 using the storage opening 45 and the upper communication passage 43, and the second storage chamber 32 is stored in the second storage chamber 32 using the storage opening 45, for example, hamburger or the like. As described above, the container 35 such as a food from which juice such as gravy tends to flow out during heating is stored. Thereafter, the contained fastener opening 45 is closed by fitting the male fastener portion 49 and the female fastener portion 51 over the entire length.

  Next, the self-supporting bag 10 in a state where the water and the contents 35 are stored in the first storage chamber 31 and the second storage chamber 32 is placed in a self-supporting state in the microwave using the self-supporting portion 25. .

  When heating is started, steam is generated from the water in the first storage chamber 31, the internal pressure in the first storage chamber 31 rises due to the steam, the bag body 15 expands, and further the steam passes through the upper communication passage 43. As a result, the second storage chamber 32 expands into the intermediate partition portion 17, and the expansion of the first storage chamber 31 and the second storage chamber 32 sufficiently expands the intermediate partition portion 17. The placement portion 37 of the storage 35 of the middle partition portion 17 is developed substantially horizontally, and the upper displacement portions 39 at both ends of the middle partition portion 17 are greatly displaced to a position higher than the placement portion 37 and the upper displacement portion. The upper communication path 43 provided in 39 is sufficiently opened.

  The steam generated in the first storage chamber 31 is introduced into the second storage chamber 32 through the upper communication path 43 to increase the vapor pressure, and the storage in the second storage chamber 32 is heated. When the vapor pressure of the second storage chamber 32 rises, the second storage chamber 32 further expands, the easily peelable heat seal portion 65 peels off, and the inside of the second storage chamber 32 and the outside communicate with each other through the exhaust opening 63. Thus, the vapor in the second storage chamber 32 is appropriately released to the outside.

The heat treatment of the contents 35 in the second storage chamber 32 is almost completed when the easily peelable heat seal portion 65 is peeled off and the vapor in the second storage chamber 32 is discharged to the outside through the exhaust opening 63. During the heat treatment, a fluid substance such as gravy flows out of the stored material onto the placement portion 37 of the partitioning portion 17. In the self-supporting bag 10 according to this embodiment, since the upper displacement portion 39 of the partitioning portion 17 is arranged at a position higher than the placement portion 37, fluid substances such as gravy stay in the placement portion 37. Then, the heat treatment proceeds in a state in which the contained material is brought into contact with a fluid substance such as gravy.
Then, after the heat treatment is completed, the paired side walls 11, 11 are opened from the communication opening 67 to be opened, or the fastener 47 is opened to remove the stored item from the second storage chamber 32.

The self-supporting bag 10 is configured such that the stored object opening 45 of the second storage chamber 32 can be opened and closed by a fastener 47 having a male fastener portion 49 and a female fastener portion 51. The male fastener portion 49 includes a protruding base portion 53 that protrudes from the one side wall portion 11 toward the other side wall portion 11, and a first protrusion that protrudes toward the second storage chamber 32 side above the protruding base portion 53. It has the piece 56 and the 2nd protrusion piece 57 which protruded and provided in the outward side of the protrusion base 53. FIG.
The female fastener portion 51 includes a first locking piece 59 capable of holding and locking the first projecting piece 56 from the pulling direction, and a second locking piece 61 capable of holding and locking the second protruding piece 57 from the pulling direction. And have. In particular, the first projecting piece 56 is longer than the second projecting piece 57, and the gap between the second projecting piece 57 and the second locking piece 61 is large. The gap between the piece 59 is set small. Therefore, the force for releasing the locking state between the first protruding piece 56 and the first locking piece 59 releases the locking state between the second protruding piece 57 and the second locking piece 61. It is bigger than the power to do.

  As a result, when the internal pressure in the second storage chamber 32 rises, the male fastener portion 49 and the female fastener portion 51 are based on the locking force between the first protruding piece 56 and the first locking piece 59. It is possible to firmly maintain the locked state between the two, and to sufficiently prevent the stored object opening 45 from being opened by the internal pressure. On the other hand, when opening the container opening 45 by separating the ends of the pair of bag main bodies 15 from each other, the male fastener is based on the locking force between the second protruding piece 57 and the second locking piece 61. The locked state between the portion 49 and the female fastener portion 51 can be easily released, and the opening operation can be easily performed.

  According to the self-supporting bag 10 as described above, the partition portion 17 is configured to be deployed by separating the pair of side wall portions 11 and 11 so as to form the placement portion 37 of the stored item. By forming the self-supporting portion 25 by separating the pair of side wall portions 11 and 11 from each other, the intermediate partition portion 17 can partition the plurality of storage chambers 31 and 32 in the vertical direction, and the intermediate partition portion 17 is developed. By doing so, it is possible to widely form the placement portion 37 of the stored items. In addition, since the upper partition passage 17 has the upper communication passage 43, air permeability between the upper and lower storage chambers 31 and 32 can be ensured.

The above-described embodiment can be appropriately changed within the scope of the present invention.
For example, in the above description, the self-supporting bag used for heat-treating food with a microwave oven has been described. However, the use of the self-supporting bag 10 is not limited to a microwave heating pack. The retort pack which accommodates and heats may be sufficient.
In the above, the fastener 47 is provided to open and close the accommodation opening 45, but the accommodation opening 45 can be sealed by heat welding such as heat sealing.

[Embodiment 2]
As shown in FIGS. 3 (a) and 3 (b), the self-supporting bag 70 according to this embodiment includes upper and lower storage chambers in an intermediate portion for forming the placement portion 37 of the inner partition portion 17. The mounting portion communication path 71 is formed of a through hole that communicates between 31 and 32. Other configurations are the same as those in the first embodiment.

  The self-supporting bag 70 can obtain the same effects as those of the first embodiment. In particular, in the self-supporting bag 70, since the partitioning portion 17 is developed and has the mounting portion communication path 71 in the mounting portion 37 formed substantially horizontally, the fluid substance staying in the mounting portion 37 is placed. It is possible to flow down from the partial communication path 71 to the lower first storage chamber 31 and to easily prevent the fluid substance from reaching the upper communication path 43 of the upper displacement portion 39. Sex can be secured. Further, since the steam generated in the first storage chamber 31 can flow into the second storage chamber 32 through the placement portion communication path 71, it is easy to promote the heat treatment of the stored items in the first storage chamber 31.

  When food such as shumai and meat buns is contained in such a self-supporting bag and the above heat treatment is performed using a microwave oven, the food can be cooked plumply.

[Embodiment 3]
As shown in FIG. 4, in the self-supporting bag 80 according to this embodiment, the inner partition portion 17 is made of a nonwoven fabric. For this reason, the notch part 41 is not provided in the middle partition part 17. Other configurations have the same configuration as the self-supporting bag of the first embodiment.

  The self-supporting bag 80 can obtain the same effects as those of the first embodiment. In particular, according to the self-supporting bag 80, in addition to obtaining air permeability between the upper and lower storage chambers 31 and 32 through the entire surface of the intermediate partitioning portion 17 by the intermediate partitioning portion 17 made of non-woven fabric, there is a difference in height from the placement site 37. Since the upper displacement portion 39 is provided, the fluid substance disposed on the middle partition portion 17 can be guided to any one by the height difference between the placement portion 37 and the upper displacement portion 39. Therefore, it is easy to prevent the entire middle partition portion 17 made of a nonwoven fabric from being covered and closed with a fluid substance, and to ensure air permeability between the upper and lower accommodation chambers 31 and 32 in the upper displacement portion 39.

  When food such as roast and rice such as curry is contained in such a self-supporting bag and the above heat treatment is performed by a microwave oven, cooking can be performed without mixing until just before eating.

[Embodiment 4]
As shown in FIG. 5, the self-supporting bag 90 according to this embodiment is formed such that the maximum deployment dimension of the middle partition portion 17 is larger than the maximum deployment dimension of the bottom wall portion 13. Other configurations are the same as those in the first embodiment.

  The maximum unfolded dimension of the partitioning portion 17 may be within a range in which the self-standing state can be maintained when the space between the pair of side wall portions 11 and 11 is maximally expanded by the internal pressure in a state where the partitioning portion 17 is placed on the self-standing portion. It is preferable to adjust according to the height from 17 self-supporting portions 25.

[Embodiment 5]
As shown in FIGS. 6 (a) to 6 (e), the self-standing bag 100 according to this embodiment is different from the first embodiment in the configuration of the partitioning portion 17.

  In this self-supporting bag 100, the packaging material is folded in two at one linear fold line 24 along the container width direction, and has a valley fold structure in which the fold line 24 is directed to the container bottom side. 11 is arranged. And the edge of the both sides used as the container thickness direction of a packaging material is joined to each side wall part 11 over the container full width in the side surface junction part 21. FIG.

  The side edges on both sides along the crease 24 of the packaging material and both ends of the crease 24 are sandwiched between the pair of side wall parts 11, 11 and are separated from each other at the peripheral joint 19 together with the pair of side wall parts 11, 11. It is impossible to join. The fold line 24 of the packaging material and the side surface joining portion 21 are both formed substantially parallel to the container bottom edge of the self-standing portion 25, and the side surface joining portion 21 is arranged at a position higher than the fold line 24 of the packaging material.

  When the middle partition portion 17 and the pair of side wall portions 11 and 11 are joined in this manner, when the pair of side wall portions 11 and 11 are separated from each other, they are shown in FIG. 6C and FIG. As described above, the first partition chamber 31 and the second chamber 32 can be formed in the bag main body 15 by unfolding the middle partition portion 17, and a load for placing the contents 35 on the middle partition portion 17. The placement part 37 and a lower displacement part 39 arranged in a position lower than the placement part 37 in a self-standing state can be formed.

  That is, when the pair of side wall portions 11 are separated from each other, the fold line 24 is developed at the intermediate position between the peripheral edge joint portions 19, and the placement portion 37 is formed between the side surface joint portions 21 on both sides. On the other hand, since both ends of the crease 24 are joined to the pair of side wall portions 11 and 11 at the peripheral joint portion 19, both ends of the crease 24 are not expanded and the height from the self-standing portion 25 is kept unchanged. . Therefore, when the pair of side wall portions 11 and 11 are sufficiently separated from each other, both ends of the fold line 24 of the inner partition portion 17 are disposed at positions lower than the deployed placement portion 37, and the lower displacement at a position lower than the placement portion 37. Site 39 is formed.

Note that, as shown in FIG. 6A, the middle partition portion 17 is provided with cut portions 41 on both side edges. Therefore, when the partition 17 is deployed, as shown in FIGS. 6C and 6E, the first storage chamber 31 and the second storage chamber 32 are communicated with the lower displacement portion 39. The lower communication passage 101 can be formed.
Other configurations are the same as those of the first embodiment.

  In the self-supporting bag 100 as described above, water can be stored in the first storage chamber 31, and the stored items can be stored in the second storage chamber 32, and heat treatment can be performed in the same manner as in the first embodiment.

According to such a self-supporting bag 100, the same effect as in the first embodiment can be obtained. For example, the plurality of storage chambers 31 and 32 can be partitioned in the vertical direction by the intermediate partition portion 17, and the intermediate partition portion 17 can be partitioned. As a result of the expansion, the mounting portion 37 can be widely formed, and the lower communication passage 101 can ensure the air permeability between the upper and lower storage chambers 31 and 32 in the middle partition portion 17.
Since the lower displacement part 39 is provided so as to be lower than the placement part 37 in a self-supporting state, and the lower communication path 101 is provided in the lower displacement part 39, a fluid substance is disposed on the middle partition portion 17. When this is done, the fluid substance easily moves to the lower displacement portion 39 side, and easily flows down to the lower first accommodating chamber 31 through the lower communication path 101. Therefore, it is possible to make it difficult for the fluid substance to stay on the inner partition portion 17.

  Also in this self-supporting bag 100, a pair of side wall portions 11, 11 opposed to each other, and a bottom wall portion 13 and an intermediate partition portion 17 disposed so as to be deployable between the pair of side wall portions 11, 11 are peripheral joint portions 19. The self-standing portion 25, the inner partition portion 17, and the pair of storage chambers 31, 32 are formed by separating the pair of side wall portions 11, 11 from each other. In the state in which the accommodation 35 is not accommodated, the pair of side wall portions 11 and 11 can be held close to each other, and can be arranged compactly.

  The middle partition portion 17 has a valley fold structure that is folded so that the fold line 24 is disposed on the bottom side, and both end edges are joined to the side wall portions 11 via the fold line 24, and both ends of the fold line 24 are connected. Since the part is joined by the peripheral joint part 19, when the pair of side wall parts 11, 11 are separated from each other and the middle partition part 17 is deployed, both end parts of the fold line 24 are arranged downward, and the middle part is the crease line. It becomes the shape arrange | positioned in the position higher than the both ends part of 24. Therefore, it is possible to form the placement portion 37 and the lower displacement portion 39 having a height difference in the middle partition portion 17 with a simple configuration.

  With such a self-supporting bag 100, for example, when food such as fried chicken is stored and heated by a microwave oven, excess oil can flow down into the first storage chamber 31 and be steamed. The feeling is improved and it can be processed healthy.

[Embodiment 6]
As shown in FIG. 7, the self-supporting bag 110 according to this embodiment includes a plurality of middle partition portions 17 as in the fifth embodiment which are spaced apart from each other in the vertical direction. The second storage chamber 32 is formed. Others are the same as in the fifth embodiment.

  Since the self-supporting bag 110 includes a plurality of second storage chambers 32, when the water injected into the first storage chamber 31 is heated to steam, the steam expands the lower second storage chamber 32. After that, it takes time to flow into the upper second storage chamber 32, and when the steam flows into the upper second storage chamber 32, it is heated to a sufficiently high temperature, and the stored items on the partition 17 35 can be heated at a high temperature. Other configurations can obtain the same effects as those of the fifth embodiment.

  In the sixth embodiment, the example in which all the middle partition portions 17 and 17 are similarly formed by the partition portions having the valley fold structure has been described. However, the present invention is not particularly limited to this shape, and all the partition portions. Can be provided by a partition portion having a mountain fold structure, or a partition portion having a valley fold structure and a partition portion having a mountain fold structure can be provided in combination, or a partition portion having another structure can also be provided in combination.

[Embodiment 7]
As shown in FIG. 8A and FIG. 8B, the self-supporting bag 120 according to this embodiment is formed in a bellows shape by bending a plurality of wrapping materials constituting the inner partition portion 17. ing. Here, the fold lines 24 adjacent to each other are folded so that the mountain fold structure and the valley fold structure are alternately arranged, and all the fold lines 24 are arranged in parallel with the side surface joint portion 21 of the inner partition part 17, In the self-standing state, all the fold lines 24 are arranged at positions lower than the side surface joint portions 21.
Others are the same as in the fifth embodiment.

The self-supporting bag 120 can obtain the same effects as those of the fifth embodiment.
Moreover, since the inner partition portion 17 is bent and bent a plurality of times, the inner partition portion 17 is formed in a bellows shape, so that the width to be joined to the peripheral joint portion 19 can be increased even if the maximum developed dimension of the inner partition portion 17 is secured larger. It is possible to keep it narrow. Therefore, it is possible to prevent the height difference between the placement portion 37 and the displacement portion 39 from being excessively increased when the middle partition portion 17 is deployed, and between the placement portion 37 and the displacement portion 39. It is easy to form a height difference of a desired size. At the same time, due to the small difference in height between the placement portion 37 and the displacement portion 39, an excessive tensile force caused by the deformation of the intermediate partitioning portion 17 between the side edge seals on both sides of the self-supporting bag 120. Can be prevented, and the self-supporting bag 120 can be prevented from being excessively deformed during heating.

[Embodiment 8]
As shown in FIGS. 9A to 9E, the self-supporting bag 130 according to the eighth embodiment is opened upward by appropriately processing the packaging material such as cutting, bending, and joining. It is formed in a concave shape. Other configurations are the same as those in the fifth embodiment.

  The self-supporting bag 130 can obtain the same effects as those of the fifth embodiment, and since the inner partition portion 17 is formed in a concave shape, when deployed, it is larger on the lower side than the side seal portion. The recessed mounting portion 37 can be easily formed, and a larger amount of the fluid substance can be stably placed on the upper side of the middle partition portion 17.

[Other Embodiments]
The present invention is not limited to the above-described embodiments, and variously modified forms are included without departing from the gist of the invention described in the claims.

For example, instead of joining the middle partition portion 17 to the pair of side wall portions 11 and 11 so as not to be peeled off, the middle partition portion 17 may be made of, for example, an easy peel film so as to be peelable.
If the middle partitioning part 17 is detachably joined, when the saucer or the source is accommodated in the first accommodating chamber 31 and heated in a state where the contents 35 are accommodated in the second accommodating chamber 32, the first accommodating chamber 31 is heated. By increasing the internal pressure of the storage chamber 31, the intermediate partition portion 17 can be peeled off, and the stored items 25 in the second storage chamber 32 can be dropped into the first storage chamber 31. As a result, the contents 25 can be mixed evenly with the sauce or sauce.

10, 70, 80, 90, 100, 110, 120, 130 Self-supporting bag 11, 11 Side wall part 13 Bottom wall part 15 Bag body 17 Middle partition part 19 Peripheral joint part 23, 24 Fold 25 Self-supporting part 31, 32 Storage chamber 37 Placement part 39 Displacement part 43,71,101 Communication path 45 Containment opening 63 Exhaust opening

Claims (5)

A bag body having a pair of side wall portions and a bottom wall portion that is developed by separating the pair of side wall portions from each other, and the bottom wall portion is deployed so that a self-supporting portion is provided at the bottom of the bag body. In the free-standing bag that is formed,
A partition portion that partitions the inside of the bag body into a plurality of storage chambers in the vertical direction,
The partition portion has a communication path that communicates between the plurality of storage chambers, and is deployed by separating the pair of side wall portions to form a placement site for the stored items. Free-standing bag.   By deploying the partitioning portion, the placement portion described above and an upper displacement portion disposed at a position higher than the placement portion in the self-standing state are formed, and the communication path is disposed in the upper displacement portion. The self-supporting bag according to claim 1, wherein The middle partition portion is composed of a sheet or film disposed between the pair of side wall portions in a state of being folded at a fold along the container width direction,
The both ends of the fold are joined to the pair of side wall portions so as not to be separated from each other, and both edges in the bag thickness direction are joined to the side wall portions at positions lower than the fold. 2. The self-supporting bag according to 2.   By deploying the partitioning portion, the placement portion described above and a lower displacement portion disposed at a position lower than the placement portion in a self-standing state are formed, and the communication path is disposed in the lower displacement portion. The self-supporting bag according to claim 1, wherein The middle partition portion is composed of a sheet or film disposed between the pair of side wall portions in a state of being folded at a fold along the container width direction,
The both ends of the fold are joined to the pair of side wall portions so as not to be separated from each other, and both edges in the bag thickness direction are joined to the side wall portions at positions higher than the fold line, respectively. 4. The self-supporting bag according to 4.

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