JP6922359B2 - Packaging bag - Google Patents

Description

The present invention relates to a packaging bag having an opening at the bottom for filling the contents. Specifically, the packaging bag is opened with respect to the contents such as seasoning liquid prefilled in the packaging bag. The present invention relates to a packaging bag that is also suitable for the purpose of putting ingredients into it and cooking both the contents and the ingredients in a microwave oven.

In recent years, with the diversification of foods that can be cooked in a microwave oven, the packaging bag that holds the food can be, for example, an automatically openable packaging bag equipped with a steam venting means that can be cooked in a microwave oven as it is, or by cooking. In addition to a self-supporting packaging bag that can be kept independent in a microwave oven so that the liquid content does not spill, and seasoning liquid that has been filled in the packaging bag in advance, open the packaging bag and add more ingredients. Then, a packaging bag or the like equipped with a resealable occlusal tool (chuck) that can be resealed and cooked by heating has been developed, and its required functions are also diverse. With the diversification of the functions of the packaging bag, it is desired to provide the positions of the openings in which the contents can be filled at various positions of the packaging bag. For example, as a packaging bag that can be filled with contents from above, a self-supporting plastic bag for a microwave oven is known (see, for example, Patent Document 1). Further, as a bag in which the contents can be filled from the side portion, a packaging bag for a microwave oven having a steam venting means at the upper portion is known (see, for example, Patent Document 2). Further, as a bag that can be filled with the contents from the side portion, a pouch having an occlusal tool (zipper) on the upper portion is also disclosed (see, for example, Patent Document 3).

However, there is no packaging bag that can be filled with the contents from the bottom, and development of a packaging bag that can be filled with the contents from the bottom is desired.

Japanese Unexamined Patent Publication No. 10-193518 Japanese Unexamined Patent Publication No. 2017-13864 Japanese Unexamined Patent Publication No. 2014-11472

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide a packaging bag having an opening at the bottom for filling the contents.

The present invention has been made to achieve the above object, and the present invention according to claim 1 includes a first side surface sheet, a second side surface sheet, and a bottom surface sheet, and the bottom surface sheet has a cross section. In a packaging bag arranged between the first side surface sheet and the second side surface sheet in a V-shaped shape and provided with a joint on the peripheral edge, the V-shaped bottom sheet is the first. The first bottom surface sheet facing the side surface sheet and the second bottom surface sheet facing the second side surface sheet are continuous, and the first bottom surface sheet is provided with a joining region joined to the first side surface sheet. A through hole penetrating the first side surface sheet and the first bottom surface sheet is provided in the region of the joint region, and the through hole is provided in the lower part of the central portion of the joint region so as to face the second bottom surface sheet. cage, wherein the second bottom sheet is packaging bag characterized in that it comprises an opening to open the second side sheet and unconjugated and are within the packaging bag.

The present invention according to claim 2 is characterized in that the packaging bag according to claim 1 is provided with a steam venting means on the upper end side facing the bottom sheet.

According to the third aspect of the present invention, in the packaging bag according to the first aspect, an openable and closable occlusal tool composed of a male member and a female member that occlude with each other is provided on the upper end side facing the bottom sheet. The male member has a band-shaped first base and a male bite on one side of the first base, and the female member has a band-shaped second base and a female bite on one side of the second base. The first base is joined to either one of the first side sheet or the second side sheet, and the second base is the first side sheet or the first side sheet opposite to the first base. It is joined to any other side of the second side surface sheet, and is continuous with the first base or the second base on the side of the bottom sheet of the first base or the side of the bottom sheet of the second base. When the easy peel portion is provided and the easy peel portion is continuously provided on the first base portion, the easy peel portion is provided on the side of the bottom sheet and on the side of the female member from the occlusal tool. When the sheet or the second side surface sheet is joined to the other side and the easy peel portion is continuously provided on the second base portion, the easy peel portion is provided on the side of the bottom sheet from the occlusion tool and the male. It is characterized in that it is joined to one side of the first side surface sheet or the second side surface sheet on the side of the member.

According to the fourth aspect of the present invention, in the packaging bag according to the third aspect, the joint portion of the first side surface sheet or the easy peel portion joined to the second side surface sheet is sharpened toward the occlusion tool. It is characterized by having a corrugated shape.

The present invention according to claim 5 includes, in the packaging bag according to claim 3 or 4, an unjoined portion in which the occlusal tool is not joined to the first side surface sheet or the second side surface sheet. Alternatively, the occlusal tool is provided with an unjoined portion that is not joined to the first side surface sheet and the second side surface sheet.

The packaging bag of the present invention proposes a novel form characterized in that the bottom is provided with an opening for filling the contents, and according to the invention of claim 1, the first side surface sheet. A second side surface sheet and a bottom surface sheet are provided, and the bottom surface sheet is arranged between the first side surface sheet and the second side surface sheet in a state of being folded in a V shape in a cross-sectional view, and is joined to the peripheral edge. In the packaging bag provided with the portion, the V-shaped bottom sheet is formed by continuously forming a first bottom sheet facing the first side surface sheet and a second bottom sheet facing the second side surface sheet. The one-bottom sheet is provided with a joining region joined to the first side surface sheet, and is provided with a through hole penetrating the first side surface sheet and the first bottom sheet in the region of the joining region, and the second bottom sheet is provided. Is provided with an opening that is not joined to the second side surface sheet and opens the inside of the packaging bag, so that the through-hole portion provided in the jointed region can be formed from the outer surface of the first side surface sheet, for example, one of them. By sucking with a suction cup or the like, the second bottom sheet of the bottom sheet can be sucked at the same time through the first side surface sheet, the first bottom sheet of the bottom sheet, and the through hole, and the outer surface of the opposite second side sheet can be sucked. Since the opening can be opened by sucking with the other suction cup or the like and separating the one suction cup and the other suction cup from each other, the contents can be filled by the automatic filling machine. Furthermore, after sealing the packaging bag, the bottom sheet expands due to the weight of the filled contents by turning the opening down, so that the packaging bag can stand on its own and cooked in the microwave oven. However, the liquid content does not spill.

According to the second aspect of the present invention, since the contents can be filled from the bottom portion, it is possible to configure a configuration in which the steam venting means is provided on the upper end side facing the bottom sheet, and the function of the steam venting means can be enhanced. Can be filled without damage.

Further, according to the invention of claim 3, the contents can be filled from the bottom, and even if the occlusal tool is provided on the upper end side side of the packaging bag, the occlusal tool is not opened and closed. Since the contents are not sometimes caught in the occlusion tool, it is hygienic and has excellent retort sterilization suitability.

Further, an easy peel portion is provided on the side of the bottom sheet of the first base portion or the side of the bottom sheet of the second base portion continuously with the first base portion or the second base portion, and the easy peel portion is provided with the first base portion. When continuously provided on the base portion, the easy peel portion is joined to the first side surface sheet or the other side of the second side surface sheet on the side of the bottom sheet and on the side of the female member from the occlusion tool. When the easy peel portion is continuously provided on the second base portion, the first side surface sheet or the second side surface sheet on the side of the bottom sheet and the side of the male member from the occlusion tool. By adopting a configuration in which the contents are joined to one side, it is possible to prevent the contents from adhering to the occlusal tool before opening because the contents filled from the bottom and the occlusal tool are separated by the easy peel portion. Does not get your hands dirty when opening. Furthermore, since the contents do not adhere to the occlusion tool, the appearance is excellent.

In addition, since it can stand on its own, it can be displayed in the store in an upright position. Therefore, the outer box for standing up and displaying can be omitted. In addition, by making it self-supporting, the upper part of the occlusal tool of the packaging bag is cut and opened, the occlusal part of the occlusal tool is released, the easy peel part is peeled off, and the ingredients are put in through the formed opening, with the upper end side facing upward. However, it is convenient for cooking by mixing it with the seasoning liquid that has already been stored.

According to the invention of claim 4, it is good because the joint portion of the first side surface sheet or the easy peel portion joined to the second side surface sheet has a corrugated shape sharply toward the occlusal tool. Easy peeling is obtained and opening becomes easier.

According to the fifth aspect of the invention, the occlusal tool includes the first side surface sheet or an unjoined portion which is not joined to the second side surface sheet, or the occlusal tool includes the first side surface sheet and the first side surface sheet. Since it is provided with an unjoined portion that is not joined to the two side sheets, when the packaging bag is opened and then reheated to cook the contents, the pressure inside the packaging bag increases due to the steam generated by heating the contents. However, the unjoined part is degassed, and the packaging bag bursts, or the occlusion of the occlusal tool is released, and the explosion noise can be avoided.

It is a front view which shows the 1st Embodiment of the packaging bag of this invention. It is a back view which shows the 1st Embodiment of the packaging bag of this invention. FIG. 1 is a cross-sectional view taken along the line AA of FIG. 1, in which FIG. 1A is an enlarged cross-sectional view for explaining the configuration of an occlusal tool and FIG. It is a back view which shows the 2nd Embodiment of the packaging bag of this invention. It is sectional drawing for demonstrating the method of filling the packing bag of 1st Embodiment with contents. It is explanatory drawing for demonstrating the method of cooking with the packaging bag of 1st Embodiment, (a) is the figure which shows the state which the upper part is separated and opened, and (b) is the figure which shows the state which the foodstuff is put in. Is. It is a front view which shows an example of the conventional packaging bag. It is a front view which shows another example of the conventional packaging bag.

The above invention will be described in detail below with reference to drawings and the like.
FIG. 1 is a front view showing a first embodiment of the packaging bag of the present invention, FIG. 2 is a rear view showing the first embodiment of the packaging bag of the present invention, and FIG. 3 is a sectional view taken along line AA of FIG. Yes, (a) is an occlusal tool, (b) is an enlarged cross-sectional view explaining the configuration of the first side surface sheet, FIG. 4 is a rear view showing a second embodiment of the packaging bag of the present invention, and FIG. 5 is the first embodiment. A cross-sectional view for explaining a method of filling the contents in the packaging bag of the form, FIG. 6 is an explanatory view for explaining a method of cooking with the packaging bag of the first embodiment, and (a) is an upper part. A diagram showing a state of separating and opening, (b) a diagram showing a state in which ingredients are put in, FIG. 7 is a front view showing an example of a conventional packaging bag, and FIG. 8 shows another example of the conventional packaging bag. 1A, 1B packaging bag, 1A'in the front view, 10 is an opened packaging bag, 10 is a first side surface sheet, 11 is a base material layer, 12 is an intermediate layer, and 13 is a heat-sealing resin layer. 20 is the second side surface sheet, 30 is the bottom sheet, 31 is the first bottom sheet, 32 is the second bottom sheet, 33 is the notch, 2 is the joint, 2t is the upper joint, 2l and 2r are the side joints. 2b is the bottom joint, 3 is the joint region, 4 is the through hole, 5 is the opening, U is the upper end side, 40 is the steam venting means, 41 is the protruding seal portion, 42 is the unsealed portion, and 43 is the divided portion. , 50 is the occlusal tool, 51 is the male member, 51a is the first base, 51b is the male occlusal part, 52 is the female member, 52a is the second base, 52b is the female occlusal part, 53 is the easy peel part, 53a is. The jointed portion of the easy peel portion, 54 is an unjoined portion, 6 is a notch, 7 is a second opening, 8 is a cut piece, 9 is a food material, and 100 and 200 are conventional packaging bags, respectively.

FIG. 1 is a front view showing a first embodiment of the packaging bag of the present invention, FIG. 2 is a rear view showing the first embodiment of the packaging bag of the present invention, and FIG. 3 is a line AA of FIG. (A) is an occlusal tool, and (b) is an enlarged cross-sectional view for explaining the configuration of the first side surface sheet. As shown in FIGS. 1 to 3, the packaging bag 1A of the first embodiment of the present invention includes a first side surface sheet 10, a second side surface sheet 20, and a bottom sheet 30, and the bottom surface sheet 30 is viewed in cross section. It is arranged in the lower part between the first side surface sheet 10 and the second side surface sheet 20 in a V-shaped folded state, has a joint portion 2 on the peripheral edge, is filled with the contents from the opening 5, and is sealed, and then the bottom sheet. It is a form of a self-standing bag that can stand on its own by expanding the bottom sheet 30 by the weight of the contents when it is placed with the 30 facing down.

The bottom sheet 30 has an inverted V shape in which one sheet is folded in half and the folded portion faces up, and the side facing the first side surface sheet 10 faces the first bottom surface sheet 31 and the second side surface sheet 20. The side is the second bottom sheet 32, and the first bottom sheet 31 and the second bottom sheet 32 are continuous. As shown in FIGS. 1 and 3, the first bottom surface sheet 31 is provided with a joint region 3 which is connected to the boat-shaped bottom joint portion 2b (2) and is joined to the first side surface sheet 10, and is a region of the joint region 3. A through hole 4 that penetrates the first side surface sheet 10 and the first bottom surface sheet 31 is provided inside. One or a plurality of through holes 4 are provided. The second bottom sheet 32 is provided with an opening 5 which is not joined to the second side surface sheet 20 and opens the inside of the packaging bag 1A. The second side surface sheet 20 and the second bottom surface sheet 32 are joined in a triangular shape at both ends of the opening 5 in the left-right direction, and are integrated with the side joint portions 2l and 2r. After filling the contents from the opening 5 by joining the second side surface sheet 20 and the second bottom sheet 32 in a triangular shape, the second side surface sheet 20 and the second bottom sheet 32 at the lower end edge of the opening 5 are joined. However, when the bottom sheet 30 is placed face down, the independence is improved, which is preferable. Further, notches 33 are provided at both ends of the bottom sheet 30 in the left-right direction, and the first side surface sheet 10 and the second side surface sheet 20 are directly joined to the portions. It is preferable to provide the notch 33 because the independence is improved.

The packaging bag of the present invention is a packaging bag of a novel form, characterized in that a second side surface sheet 20 and an opening 5 in which the second bottom sheet 32 is not joined are provided on the side of the second bottom sheet 32, and the bottom surface thereof. By providing a through hole 4 penetrating the first side surface sheet 10 and the first bottom surface sheet 31 in the region of the joint region 3 on the first bottom surface sheet 31 side of the sheet 30, the opening 5 can be opened and the contents. Can be easily filled.

As shown in FIGS. 1 to 3, the packaging bag 1A includes an openable and closable occlusal tool 50 composed of a male member 51 and a female member 52 that mesh with each other on the upper end side U facing the bottom sheet 30. As will be described later, the occlusal tool 50 is convenient for cooking by adding further ingredients to the contents such as a seasoning liquid filled in the packaging bag in a microwave oven, and is a more preferable form. As shown in FIGS. 1 to 3, the band-shaped occlusal tool 50 in the left-right direction is provided on the upper joint 2t side along the upper joint 2t.
The male member 51 is provided with a band-shaped first base portion 51a and a male occlusal portion 51b on one side of the first base portion 51a, and the other side of the first base portion 51a is second on both sides of the male occlusal portion 51b. It is joined to the side sheet 20. The female member 52 is provided with a band-shaped second base portion 52a and a female occlusal portion 52b on one side of the second base portion 52a, and the other side of the second base portion 52a is first on both sides of the female occlusal portion 52b. It is joined to the side sheet 10.

Further, as shown in FIGS. 1 and 2, one end of the occlusal tool 50 is provided with an unjoined portion 54 in which the occlusal tool 50 is not joined to the first side surface sheet 10 or the second side surface sheet 20, or is occluded. The tool 50 includes an unjoined portion 54 in which the tool 50 is not joined to the first side surface sheet 10 and the second side surface sheet 20. Specifically, one end of the band-shaped first base 51a of the male member 51 is provided with an unjoined portion 54 that is not joined to the second side surface sheet 20, or the band-shaped second base of the female member 52. An unjoined portion 54 that is not joined to the first side surface sheet 10 is provided at one end on the other side of the 52a. Alternatively, an unjoined portion 54 is provided at one end on the other side of the first base portion 51a and the second base portion 52a. When the contents of the packaging bag 1A are heated or the unbonded portion 54 is heated for cooking in a microwave oven after adding ingredients, the inside of the packaging bag 1A expands due to the generated steam, and the packaging bag 1A is expanded. It is preferable to provide it because it is for avoiding the explosive sound emitted when 1A bursts or the bite of the bite tool 50 is released, and the generated steam can be released from the unjoined portion 54. The width of the unjoined portion 54 may be appropriately set according to the contents in consideration of the steaming effect when cooking in the microwave oven. The occlusal tool 50 is not limited to FIG. 3, the first base portion 51a is joined to either one of the first side surface sheet 10 and the second side surface sheet 20, and the second base portion 52a is the first base portion. It is joined to either the first side surface sheet 10 or the second side surface sheet 20 on the opposite side of the 51a, whichever side. Specifically, the male member 51 may be provided on the first side surface sheet 10 side, and the female member 52 may be provided on the second side surface sheet 20 side.

Further, an easy peel portion 53 is continuously provided under the occlusal tool 50. In FIG. 3, an easy peel portion 53 is provided on the side of the bottom sheet 30 of the second base portion 52a of the female member 52 so as to be continuous with the second base portion 52a. The easy peel portion 53 is a resin film continuously formed on the second base portion 52a, and is joined to the side of the bottom sheet 30 and the side of the second side surface sheet 20 to which the male member 51 is joined from the occlusal tool 50. Has been done. The joint portion 53a of the easy peel portion joined to the first side surface sheet 10 or the second side surface sheet 20 has a corrugated shape sharpened toward the occlusal tool 50. The shape of the joint portion 53a of the easy peel portion may be a straight line or a curved line, but it is preferable to use the above waveform because good easy peelability can be obtained and opening becomes easier. By joining the joint portion 53a of the easy peel portion to the second side surface sheet 20, it is possible to prevent, for example, the seasoning liquid filled below the easy peel portion 53 from touching the male member 51 and the female member 52, which will be described later. .. The easy peel portion 53 may be provided continuously with the first base portion 51a on the side of the bottom surface sheet 30 of the first base portion 51a of the male member 51 constituting the occlusal tool 50 and may be joined to the first side surface sheet 10. That is, the first base portion 51a is joined to either one of the first side surface sheet 10 and the second side surface sheet 20, and the second base portion 52a is the first side surface sheet 10 or the second side surface opposite to the first base portion 51a. When the easy peel portion 53 is continuously provided on the first base portion 51a by being joined to any other side of the sheet 20, the easy peel portion 53 is provided on the bottom sheet 30 side of the occlusal tool 50 and on the female member 52. When the easy peel portion 53 is continuously provided on the second base portion 52a by being joined to the first side surface sheet 10 or the other side of the second side surface sheet 20 by the joint portion 53a of the easy peel portion, the easy peel portion 53 is joined to one side of the first side surface sheet 10 or the second side surface sheet 20 on the side of the bottom sheet 30 and the side of the male member 51 with respect to the occlusal tool 50 by the joint portion 53a of the easy peel portion.

The packaging bag 1A of the present invention is not limited to FIGS. 1 to 3, and the occlusal tool 50 provided with the easy peel portion 53 may be omitted. Further, an occlusal tool not provided with the easy peel portion 53 can be used, and in this case as well, since the contents can be filled from the bottom, the occlusal tool does not open and close, so that the contents may be caught in the occlusal tool at the time of filling. It is hygienic because there is no such thing.

3A and 3B are cross-sectional views taken along the line AA of FIG. 1, where FIG. 3A is an enlarged cross-sectional view illustrating the configuration of an occlusal tool and FIG. The configuration of the packaging bag 1A of the present invention will be described with reference to FIG. 3 (b). As the first side surface sheet 10 of the packaging bag 1A, a laminate in which the base material layer 11, the intermediate layer 12, and the heat-sealing resin layer 13 are laminated is used in this order from the outside. Although not shown, the second side surface sheet 20 and the bottom surface sheet 30 also use the same laminated body as the first side surface sheet 10. The packaging bag 1A has a joint portion in which the heat-sealing resin layer 13 of the first side surface sheet 10 and the heat-sealing resin layers of the second side surface sheet 20 and the bottom sheet 30 face each other and the peripheral edges are heat-sealed, for example. 2 (top joint 2t, side joint 2l, 2r, bottom joint 2b) is formed.

Since the base material layer 11 is a basic material constituting the packaging bag 1A, it can withstand conditions such as formation and processing of the packaging bag 1A, and has processing workability, heat resistance, slipperiness, pinhole resistance, and water vapor. Alternatively, it is preferable that the material has excellent barrier properties against gas, printability, and other properties, and can hold them well without impairing the properties.

As the base material layer 11 used in the present invention, a biaxially stretched film such as polypropylene, polyethylene terephthalate, or nylon can be used. Alternatively, a film obtained by depositing an inorganic substance such as aluminum oxide, silicon oxide, indium oxide, tin oxide, and zirconium oxide on the above film and providing a vapor deposition layer can be used. Usually, the base material layer 11 is often printed, and printability is required. Therefore, a biaxially stretched film is preferable. The thickness of the film constituting the base material layer 11 may be a thickness that can be maintained at the minimum necessary for strength, rigidity, etc. as a basic material, and may be determined in consideration of cost, etc. Usually, it is about 9 to 50 μm.

The intermediate layer 12 is provided when rigidity, light shielding property, gas barrier property, etc. are required by packaging conditions, transportation conditions, and content protection function conditions, and the film used for the base material layer 11 can be used. .. Further, one or more of these films and the like may be combined and laminated. Further, the intermediate layer 12 may be omitted depending on the required quality.

The heat-sealing resin layer 13 may be such that the heat-sealing resin layers of the first side surface sheet 10, the second side surface sheet 20, and the bottom sheet 30 can be heat-sealed to each other by heat, for example. Low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, ethylene / α-olefin copolymer polymerized using metallocene catalyst (single site catalyst), polypropylene, ethylene / acetate Vinyl copolymers, ionomer resins, ethylene-ethyl acrylate copolymers, ethylene-acrylic acid copolymers, ethylene-methacrylic acid copolymers, ethylene-propylene copolymers, methylpentene polymers, polyolefins such as polyethylene or polypropylene One or more selected from acid-modified polyolefin resins obtained by modifying the based resin with an unsaturated carboxylic acid such as acrylic acid, methacrylic acid, maleic anhydride, and fumaric acid can be used. More preferable resins include linear low-density polyethylene and polypropylene having retort sterilization suitability. The thickness of the heat-sealing resin layer 13 is preferably about 20 μm to 150 μm, more preferably about 40 μm to 100 μm, in consideration of heat sealability and the like.

As a method of laminating the base material layer 11, the intermediate layer 12, and the heat-sealing resin layer 13, for example, for a two-component curable dry laminate using a main agent such as polyester polyol or polyether polyol and an isocyanate-based curing agent. A dry lamination method of laminating using an adhesive or an extruded lamination method of laminating polypropylene, polyethylene resin or the like by heat melt extrusion can be used. Considering the retort suitability, the dry lamination method is preferable. Further, since the laminated body composed of the base material layer 11, the intermediate layer 12, and the heat-sealing resin layer 13 does not use a material having a metal foil such as aluminum or a metal vapor deposition film layer such as aluminum, it is heated in a microwave oven. It is possible.

To show a configuration example of the laminate used for the packaging bag 1A, the base material layer 11 is a biaxially stretched polyethylene terephthalate film (PET) having a thickness of 12 μm, and the intermediate layer 12 is a biaxially stretched nylon film (ON) having a thickness of 15 μm. , PET 12 μm / DL / ON 15 μm / DL / CPP 60 μm laminated by the dry laminating method using an unstretched polypropylene film (CPP) with a thickness of 60 μm on the heat-sealing resin layer 13 and a dry laminating adhesive (DL). The configuration can be mentioned. The above configuration has retort pouch suitability and microwave oven suitability.

The material of the occlusal tool 50 is made of a resin having compatibility with the heat-sealing resin layer 13 of the first side surface sheet 10 and the second side surface sheet 20 of the packaging bag 1A. As shown in FIG. 3, the occlusal tool 50 is composed of a male member 51 and a female member 52, each male member 51 is on the second side surface sheet 20 on one side (right side in FIG. 3), and the female member 52 is on the other side. The first side surface sheet 10 on the side (left side in FIG. 3) is heat-sealed. At this time, by interposing a heat shield plate (not shown) between the male member 51 on the right side and the female member 52 on the left side, heat fusion between the male member 51 and the female member 52 on the left side is prevented. Then, the easy peel portion 53 integrally formed with the female member 52 is heat-sealed to the inner surface (heat-sealing resin layer) of the second side surface sheet 20 on the side where the male member 51 is heat-sealed, and the easy peel portion is formed. The joint portion 53a is formed.

FIG. 4 is a rear view showing a second embodiment of the packaging bag of the present invention, and is a plan view seen from the side of the second side surface sheet 20. The packaging bag 1B according to the second embodiment of the present invention includes the steam venting means 40 on the upper end side U facing the bottom sheet 30. The packaging bag 1A of the first embodiment is different from the packaging bag 1A in that it is provided with the steam venting means 40 and is not provided with the occlusal tool 50, but is the same except for the above.

The steam venting means 40 is preferably provided at the upper center of the packaging bag 1B. In the example shown in FIG. 4, the steam venting means 40 is provided in connection with the inside of the upper joint portion 2t, and a protruding seal portion 41 protruding from the inside of the upper joint portion 2t toward the bottom sheet 30 is provided and protrudes. The unsealed portion 42 is provided in the region surrounded by the sealed portion 41 and the upper joint portion 2t, and the divided portion 43 is provided in the unsealed portion 42. The unsealed portion 42 may be provided so as to extend from the protruding seal portion 41 to the upper joint portion 2t. The dividing portion 43 is provided so as to penetrate the first side surface sheet 10 and the second side surface sheet 20 as shown in FIG. The dividing portion 43 may be formed, for example, by a notch or a hole. By providing the dividing portion 43, when cooking is performed using a microwave oven, the inside of the packaging bag expands due to the steam generated in the packaging bag, and the pressure steam seals the protruding seal portion 41 to the unsealed portion 42 side. When the retreat occurs and the retreat of the seal reaches the unsealed portion 42, the steam generated in the packaging bag can be released to the outside through the dividing portion 43. Further, even if the upper end side U is provided with the steam bleeding means 40, the contents can be filled from the opening 5 provided in the bottom portion, so that the function of the steam bleeding means 40 is not impaired. The protruding seal portion 41 of the steam venting means 40 preferably has a corner portion. As shown in FIG. 4, it is preferable to provide the corners so as to face the center of the packaging bag 1B, and when cooking using a microwave oven, the seal easily recedes from the apex of the corners, and the steam venting function is further enhanced. It can be made easier to exert.

FIG. 5 is a cross-sectional view for explaining a method of filling the packaging bag 1A of the first embodiment with the contents. A method of filling the packaging bag 1A with the contents will be described with reference to FIG. The packaging bag 1A is supplied to the filling portion with the bottom facing up by, for example, an automatic filling machine, both ends of the bottom are chucked, and one suction cup sucks the joint region 3 from the outside of the first side surface sheet 10 and the other. When the region facing the joint region 3 is sucked from the outside of the second side surface sheet 20 with a suction cup and pulled in opposite directions to the outside as shown by the arrows, the joint region 3 is provided with a through hole 4, so that the bottom sheet 30 is the first. The two bottom sheet 32 is sucked through the through hole 4, the first side surface sheet 10 and the bottom sheet 30 are integrally sucked by one suction cup, and the second side sheet 20 is sucked by the other suction cup. Therefore, the opening 5 is opened, and the contents (not shown) such as a seasoning liquid are filled, and the edge portions of the second bottom sheet 32 and the second side surface sheet 20 are heat-sealed, so that the contents are sealed and packaged. Will be done.

In the sealed package, the easy peel portion 53 is detachably joined to the second side surface sheet 20 at the joint portion 53a of the easy peel portion, and the contents filled from the bottom and the occlusal tool 50 are separated. ing. Therefore, it is possible to prevent the contents from adhering to the occlusal tool 50 before opening, and the hands are not soiled at the time of opening. Further, since the contents do not adhere to the occlusal tool 50, the appearance is excellent.

After that, the package in which the contents are filled in the packaging bag 1A is sterilized by retort or boil. In the packaging bag 1A, the bottom sheet 30 expands due to the weight of the filled contents when the bottom sheet 30 side is turned down, so that the packaging bag 1A can stand on its own and is displayed in the store in a self-supporting state. Can be done. Therefore, the outer box for standing up and displaying can be omitted. In addition, since it can be cooked in a microwave oven while it is self-supporting, the liquid content does not spill out.

Next, with reference to FIG. 6, a method of cooking the food material by using the packaging body in which the packaging bag 1A is filled with the contents will be described. First, as shown in FIG. 6A, the packaging bag 1A is separated from the notch 6 (see FIGS. 1 and 2) between the upper joint portion 2t and the occlusal tool 50, and when the cut piece 8 is removed, the second opening is opened. 7 is formed. Then, the male member 51 and the female member 52 of the occlusal tool 50 are released from the occlusal through the second opening 7, and the occlusal tool 50 is opened. By opening the zipper 50, the easy-peel portion 53 is pulled, which is formed continuously to the snap fastener 50, the junction 53a of the easy-peel portion is peeled from the second side sheet 20 (see FIG. 3). At this time, the joint portion 53a of the easy peel portion has a corrugated shape and is peeled off from the sharp side, so that peeling can be easily started, and the easy peel portion 53 can be easily peeled off from the second side surface sheet 20.

Then, as shown in FIG. 6 (b), the necessary foodstuff 9 such as vegetables is put into the contents such as the seasoning liquid in the opened packaging bag 1A'. Since the opened packaging bag 1A'has self-supporting property, when the food material 9 is added, the bottom sheet 30 is further expanded and the stability is increased. After that, the occlusal tool 50 is occluded again, and if necessary, the food material 9 and the seasoning liquid are rubbed by hand so that the food material 9 is blended with the seasoning liquid. By biting the occlusal tool 50, the food material 9 and the seasoning liquid do not spill, and this operation can be easily performed. Then, the opened packaging bag 1A'is placed in a microwave oven in an upright state and heated for a certain period of time.

Since the occlusal tool 50 is closed during heating in the microwave oven, the pressure inside the opened packaging bag 1A'is increased by heating the seasoning liquid of the contents and the food material 9. However, the occlusal tool 50 is provided with the unjoined portion 54, and the steam generated in the opened packaging bag 1A'is discharged from the unjoined portion 54, and the inside of the opened packaging bag 1A'is constant. Can be held in pressure. Since the unjoined portion 54 is provided, steam is discharged even if the internal pressure of the opened packaging bag 1A'is increased as the seasoning liquid of the contents and the food material 9 are heated, so that the occlusal tool 50 bursts. This makes it possible to cook while preventing the contents from being scattered inside the microwave oven. When the cooking is completed, the ingredients 9 and the seasoning liquid are transferred from the opened packaging bag 1A'to a plate or the like. After taking out the required amount, the remaining amount can be resealed with the occlusal tool 50, which is convenient.

Since the packaging bag 1A has a laminated structure that does not include metal foil such as aluminum or metal deposition such as aluminum, it is suitable for a microwave oven.

Although an example of how to use the packaging bag 1A is shown, the contents may be cooked retort foods such as hamburger steak, meatballs, curry, and stew. In this case, since no occlusion tool is required, the packaging bag 1B of the second embodiment is preferable. Alternatively, a packaging bag not provided with the steam venting means 40 or the occlusal tool 50 may be used, but in this case, a hole for discharging steam is formed in a part of the packaging bag. or. Transfer the contents to a plate and reheat. Further, although a packaging bag provided with the occlusal tool 50 can be used, the unjoined portion 54 is unnecessary if it is transferred to a plate and heated at the time of reheating.

The packaging bags 1A and 1B of the present invention are provided with the conventional packaging bag 100 having the opening shown in FIG. 7 on the side and the opening on the side shown in FIG. 8 by providing the opening 5 at the bottom. It has an effect not found in the conventional packaging bag 200.

Next, the effects of the packaging bags 1A and 1B of the present invention will be described more specifically. FIG. 7 is a conventional packaging bag 100 that can be microwaved and has an opening 5 on the side, and is a packaging bag corresponding to Patent Document 3. The inside of a microwave oven is usually wide and the height is smaller than the width, and because of the height standard, when the packaging bag is stored in a self-supporting state, the height of the packaging bag is constant ( Usually, it is limited to 150 mm or less) or less. Since the conventional packaging bag 100 is provided with an opening 5 in the height direction, the opening 5 is limited in height and has a bottom having an occlusal tool 50 at the top and a bottom sheet 30 at the bottom, so that the size of the opening 5 is small. Therefore, it has a drawback that the filling speed of the contents cannot be increased because the opening 5 cannot be opened widely. Since the packaging bag 1A of the present invention has an opening 5 in the width direction, the height is restricted like the conventional packaging bag 100, but the width of the packaging bag 1A can be widened, and the dimensions of the opening 5 can be increased. Since it can be made large, the opening 5 can be widened, the filling work can be facilitated, and the filling speed can be improved.

FIG. 8 is a conventional microwaveable packaging bag 200 having an opening 5 on the side, which corresponds to Patent Document 2. Due to the height standard inside the microwave oven, the conventional packaging bag 200 is also subject to the height limitation of the packaging bag. Since the conventional packaging bag 200 is provided with an opening 5 in the height direction, the height is restricted, and the conventional packaging bag 200 has a bottom having a steam venting means 40 at the top and a bottom sheet 30 at the bottom, and the dimensions of the opening 5 are large. It has the same drawbacks as the conventional packaging bag 100 that the filling speed cannot be increased because the opening 5 cannot be widened due to the small size. On the other hand, since the packaging bag 1B of the present invention has an opening 5 in the width direction, the height is restricted like the conventional packaging bag 200, but the width of the packaging bag 1B can be widened and the opening Since the size of 5 can be increased, the opening 5 can be widened, the filling work can be facilitated, and the filling speed can be improved.

It should be noted that the embodiments described so far include 2-3 embodiments of the packaging bag according to the present invention, and the packaging bag according to the present invention is not limited to this, and the present invention is not limited to this. Anything that does not deviate from the gist of the present invention is included in the present invention.

1A, 1B Packaging bag 1A'Opened packaging bag 10 First side sheet 11 Base material layer 12 Intermediate layer 13 Heat-sealing resin layer 20 Second side sheet 30 Bottom sheet 31 First bottom sheet 32 Second bottom sheet 33 Notch 2 Joint 2t Top joint 2l, 2r Side joint 2b Bottom joint 3 Joint area 4 Through hole 5 Opening U Upper end side 40 Steam venting means 41 Protruding seal 42 Unsealed 43 Divided part 50 Occlusal Tools 51 Male member 51a First base 51b Male occlusal 52 Female member 52a Second base 52b Female occlusal 53 Easy peel 53a Easy peel joint 54 Unjoined part 6 Notch 7 Second opening 8 Cut piece 9 Ingredients 100, 200 Conventional packaging bag

Claims (5)

First side sheet and
The second side sheet and
With a bottom sheet,
In a packaging bag in which the bottom sheet is arranged between the first side surface sheet and the second side surface sheet in a V-shaped cross-sectional view and has a joint on the peripheral edge.
The V-shaped bottom sheet is formed by continuously forming a first bottom sheet facing the first side surface sheet and a second bottom sheet facing the second side surface sheet.
The first bottom surface sheet is provided with a joint region joined to the first side surface sheet, and is provided with a through hole penetrating the first side surface sheet and the first bottom surface sheet in the region of the joint region.
The through hole is provided in the lower part of the central portion of the joint region so as to face the second bottom surface sheet.
A packaging bag characterized in that the second bottom sheet is provided with an opening that is not joined to the second side surface sheet and opens the inside of the packaging bag. The packaging bag according to claim 1, wherein a steam venting means is provided on the upper end side facing the bottom sheet. An openable and closable occlusal tool composed of a male member and a female member that occlude with each other is provided on the upper end side facing the bottom sheet.
The male member has a band-shaped first base and a male occlusal portion on one side of the first base.
The female member is provided with a band-shaped second base and a female occlusal portion on one side of the second base.
The first base is joined to either one of the first side sheet or the second side sheet, and the second base is the first side sheet or the second side sheet opposite to the first base. Is joined to either side of
An easy peel portion is provided on the side of the bottom sheet of the first base or the side of the bottom sheet of the second base continuously with the first base or the second base.
When the easy peel portion is continuously provided on the first base portion, the first side surface sheet or the second side surface sheet on the side of the bottom sheet and the side of the female member from the occlusion tool. Joined to the other side of the
When the easy peel portion is continuously provided on the second base portion, the first side surface sheet or the second side surface sheet on the side of the bottom sheet and the side of the male member from the occlusion tool. The packaging bag according to claim 1, wherein the packaging bag is joined to one side. The packaging bag according to claim 3, wherein the joint portion of the first side surface sheet or the easy peel portion joined to the second side surface sheet has a corrugated shape that is sharp toward the occlusal tool. The bite comprises an unjoined portion that is not joined to the first side sheet or the second side sheet, or the bite is provided with an unjoined portion that is not joined to the first side sheet and the second side sheet. The packaging bag according to claim 3 or 4, wherein the packaging bag is characterized in that.

Images