JP2020147331A - bag - Google Patents

Abstract

To provide a bag in which a consumer can easily add a content to a storage part and the consumer can easily take out a heated content.SOLUTION: A bag has a storage part, and includes: a first film; a second film that defines the storage part with the first film; a first side seal part and a second side seal part that extend along an outer edge of the bag and face each other; a first member that has a first connection part and a first fitting part; a second member that has a second connection part and a second fitting part; a breaking mechanism that breaks the first film at a position between the first connection part and the second connection part; and an opening mechanism that breaks the first film and the second film at a position where they do not overlap with the first member and the second member. The first connection part and the first fitting part and the second fitting part and the second connection part extend from the first side part seal part to the second side part seal part, respectively, and the part of the first member located between the first side seal part and the second side seal part is not connected to the second film.SELECTED DRAWING: Figure 1

Description

The present invention relates to a bag provided with an opening mechanism.

Conventionally, many cooked or semi-cooked liquids, viscous bodies, or contents in which liquids and solids are mixed and sealed in a bag made of a plastic laminate are on the market. In the bag, the unsealed portion in which the laminated bodies are not joined together constitutes the accommodating portion in which the contents are accommodated. Further, the sealing portion in which the laminated bodies are joined seals the accommodating portion. The contents are, for example, cooked foods such as curry, stew, and soup. The contents are heated in a microwave oven or the like while being contained in a bag.

As disclosed in Patent Document 1, for example, the bag is formed by heat-welding two films constituting the front surface and the back surface of the bag, the inner surface of which is composed of a thermoplastic resin layer, to the side edge sealing portion. It is obtained by forming a seal portion such as a lower edge seal portion or a lower edge seal portion. At this time, usually, the two films are not heat-welded at the upper part of the bag, thereby forming an opening at the upper part of the bag. Next, the contents are filled inside the bag through this opening. Then, the two films are heat-welded to each other again at the upper part of the bag to form an upper edge sealing portion at the upper part of the bag, thereby sealing the bag. In this way, a bag filled with the contents is obtained.

Japanese Unexamined Patent Publication No. 2015-12050

An object of the present invention is to provide a bag in which a consumer can easily add contents to a storage portion and the heated contents can be easily taken out by the consumer.

The present invention is a bag provided with an accommodating portion for accommodating the contents, and is a first film constituting the first surface of the bag and a second film constituting the second surface facing the first surface. The first film, which defines the accommodating portion between the first film and the first film, extends along the outer edge of the bag and faces each other, and joins the first film and the second film. It has a side seal portion and a second side seal portion, a first joint portion joined to the inner surface of the first film, and a first fitting portion located so as not to overlap the first joint portion. A second member having a first member, a second joint portion bonded to the inner surface of the first film, and a second fitting portion capable of fitting the first fitting portion, and the first member. A breaking mechanism for breaking the first film at a position between the joint portion and the second joint portion, and the first film and the second film at a position not overlapping with the first member and the second member. The first joint portion and the first fitting portion of the first member, and the second fitting portion and the second fitting portion of the second member are provided with an opening mechanism for breaking the film, respectively. A portion of the first member that extends from the first side seal portion to the second side seal portion and is located between the first side seal portion and the second side seal portion is a portion of the first member. It is a bag that is not bonded to the second film.

In the bag according to the present invention, a third film that is located between the first film and the second film and constitutes the lower part of the bag may be further provided.

In the bag according to the present invention, the opening mechanism may be provided on the upper side of the first member and the second member.

In the bag according to the present invention, the opening mechanism may be provided on the lower side of the first member and the second member.

The present invention is the method of using the bag described above, wherein the first film is broken at a position between the first joint portion and the second joint portion by using the break mechanism, and the first film is broken into the accommodating portion. The first opening step of forming a communicating opening, the accommodating step of accommodating the contents in the bag through the opening, and the first fitting portion and the second fitting portion are fitted together. Using the sealing step of sealing the bag and the opening mechanism, the first film and the second film are broken at positions where they do not overlap with the first member and the second member, and the first film and the second film are communicated with the accommodating portion. It is a method of using a bag including a second opening step of forming an opening opening.

According to the present invention, it is possible to provide a bag in which the consumer can easily add the contents to the accommodating portion and the heated contents can be easily taken out by the consumer.

It is a front view which shows the bag in embodiment of this invention. It is sectional drawing which shows an example of the layer structure of a laminated body. It is sectional drawing which shows the case where the bag shown in FIG. 1 is seen along line III. It is sectional drawing which shows the case where the bag shown in FIG. 1 is seen along the IV line. It is a figure which shows a part of the manufacturing process of a bag. It is a figure which shows a part of the manufacturing process of a bag. It is a front view which shows the bag in the state which the upper part is sealed. It is sectional drawing which shows the case where the bag shown in FIG. 7 is seen along the line VIII. It is a perspective view which shows the bag in the state which opened using the breaking mechanism. It is sectional drawing which shows the bag in the state which was opened by using the breaking mechanism. It is sectional drawing which shows the bag in the state sealed by the fitting part. It is sectional drawing which shows the bag in the state which was opened by using the opening mechanism. It is a front view which shows one modification of a bag. It is a front view which shows one modification of a bag. It is a front view which shows one modification of a bag. It is a front view which shows one modification of a bag. It is a front view which shows one modification of a bag.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 11. In the drawings attached to the present specification, the scale, the aspect ratio, etc. are appropriately changed from those of the actual product and exaggerated for the convenience of illustration and comprehension.

In addition, as used in the present specification, the terms such as "parallel", "orthogonal", and "same" and the values of length and angle that specify the shape and geometric conditions and their degrees are strictly used. Without being bound by the meaning, we will interpret it including the range where similar functions can be expected.

Bag FIG. 1 is a front view showing a case where the bag 10 in the present embodiment is viewed from the front surface side. The bag 10 includes a storage unit 18 for storing the contents. Note that FIG. 1 shows a bag 10 in a state in which the upper portion 11 is open before the contents are stored. The upper portion 11 is sealed after the contents are contained in the bag 10. The bag 10 according to the present embodiment is configured to be suitably used as a pouch for a microwave oven in which the contents are heated by a microwave oven.

In the present embodiment, in addition to the contents previously stored in the bag 10 in which the upper portion 11 is sealed, the contents are heated by a microwave oven or the like with the contents added by the consumer. It is assumed that the bag 10 will be used. In the following description, the contents pre-contained in the bag 10 in which the upper portion 11 is sealed are also referred to as the first contents. Further, the content added by the consumer by opening a part of the bag 10 in which the upper portion 11 is sealed is also referred to as a second content.

Examples of the first content include seasonings, soups, soup stocks, powders and the like. As the second content, one that is preferably heated together with the first content is selected. Examples of the second content include foodstuffs such as vegetables, noodles, warishita, and water. As long as it can be heated by a microwave oven, it is possible to select other than the above as the first content and the second content.

In the present embodiment, the bag 10 is a bottom gusset type bag configured to be self-supporting. The bag 10 includes an upper portion 11, a lower portion 12, a first side portion 13 and a second side portion 14, and has a substantially rectangular contour in the front view. The names such as "upper part", "lower part" and "side part", and the terms such as "upper part" refer to the bag 10 and its configuration based on the state in which the bag 10 stands on its own with the gusset part down. It is just a relative representation of the position and orientation of the elements. The posture during transportation and use of the bag 10 is not limited by the names and terms in the present specification.

Hereinafter, the configuration of the bag 10 will be described. The bag 10 according to the present embodiment includes a first film 15, a second film 16, a third film 17, a first member 31, a second member 32, a breaking mechanism 33, and an opening mechanism 70. The first film 15 constitutes the front surface of the bag 10, the second film 16 constitutes the back surface of the bag 10, and the third film 17 constitutes the lower portion 12 of the bag 10. The third film 17 is arranged between the first film 15 and the second film 16 in a state of being folded back at the folded-back portion 17f. The breaking mechanism 33 is a component for opening the bag 10 when the consumer puts the second content into the bag 10. The first member 31 and the second member 32 are components for sealing the bag 10 after the consumer puts the second content into the bag 10. The first member 31 has a first joint portion 31a and a first fitting portion 31b shown in FIG. The second member 32 has a second joint portion 32a and a second fitting portion 32b shown in FIG. The opening mechanism 70 is a component for opening the bag 10 when the consumer takes out the contents from the bag 10 after heating the contents. In FIG. 1, components such as the second film 16 that are not visible when the bag 10 is viewed from the surface side are represented by dotted lines.

The terms "first film", "second film", and "third film" described above refer to each film according to the positional relationship in the bag 10, such as being located on the front surface, the back surface, or the lower portion 12 of the bag 10. It is merely a compartment, and the method of providing the film when manufacturing the bag 10 is not limited by the above-mentioned terms. For example, the bag 10 may be manufactured by using one film in which the first film 15, the second film 16, and the third film 17 are connected in series, and the first film 15 and the third film 17 are connected in series. It may be produced by using a total of two films, one film and one second film 16, one first film 15, one second film 16, and one third film. It may be manufactured by using a total of three films of the film 17.

The inner surfaces of the first film 15, the second film 16, and the third film 17 are joined by a sealing portion. In a plan view such as FIG. 1, the seal portion and the first joint portion 31a and the second joint portion 32a, which will be described later, are hatched.

As shown in FIG. 1, the seal portion has an outer edge seal portion extending along the outer edge of the bag 10. The outer edge seal portion extends along the lower seal portion 12a extending to the lower portion 12, the first side seal portion 13a extending along the first side portion 13, and the second side portion 14 facing the first side portion 13. The second side seal portion 14a is included. In the bag 10 in the state before the contents are stored, as shown in FIG. 1, the upper portion 11 of the bag 10 is the first opening 11b. After the contents are contained in the bag 10, the inner surface of the first film 15 and the inner surface of the second film 16 are joined at the upper portion 11 to form an upper seal portion and seal the bag 10.

The first side seal portion 13a, the second side seal portion 14a, and the upper seal portion are seal portions formed by joining the inner surface of the first film 15 and the inner surface of the second film 16. On the other hand, the lower seal portion 12a has a seal portion formed by joining the inner surface of the first film 15 and the inner surface of the third film 17, and the inner surface of the second film 16 and the inner surface of the third film 17. Includes a seal that is formed by joining.

As long as the bags 10 can be sealed by joining the films facing each other, the method for forming the sealing portion is not particularly limited. For example, the inner surface of the film may be melted by heating and the inner surfaces may be welded to each other, that is, the seal portion may be formed by heat sealing. Alternatively, the sealing portion may be formed by adhering the inner surfaces of the films facing each other with an adhesive or the like.

Next, the layer structure of the laminate 25 constituting the first film 15 and the second film 16 will be described. FIG. 2 is a cross-sectional view showing an example of the layer structure of the laminated body 25.

The laminate 25 includes at least a base material layer 26 and a sealant layer 27. In the example shown in FIG. 2, the base material layer 26 constitutes the outer surface 25y of the laminated body 25, and the sealant layer 27 constitutes the inner surface 25x of the laminated body 25. Further, the laminated body 25 may further include an adhesive layer 28 for adhering the base material layer 26 and the sealant layer 27. The thickness of the laminated body 25 is, for example, 60 μm or more, more preferably 70 μm or more. The thickness of the laminated body 25 is, for example, 110 μm or less, more preferably 100 μm or less. The laminated body 25 may further include a layer other than the layer shown in FIG.

As the material constituting the base material layer 26, for example, a polyamide such as polyester or nylon such as polyethylene terephthalate or polybutylene terephthalate, or a plastic such as polyolefin such as high-density polyethylene or polypropylene can be used. The thickness of the base material layer 26 is, for example, 10 μm or more and 30 μm or less.

As the material constituting the sealant layer 27, for example, polyethylene or polypropylene such as ethylene-methacrylic acid copolymer (EMMA), low density polyethylene (LDPE) or linear low density polyethylene (LLDPE) can be used. The thickness of the sealant layer 27 is, for example, 40 μm or more, more preferably 50 μm or more. The thickness of the sealant layer 27 is, for example, 100 μm or less, more preferably 70 μm or less.

The structure of the adhesive layer 28 is arbitrary. For example, the adhesive layer 28 may be a layer formed by an extrusion method or a layer formed by a dry laminating method. For example, the base material layer 26 and the sealant layer 27 may be adhered to each other via the adhesive layer 28 by an extrusion method using an extrusion coater (not shown). Further, the base material layer 26 and the sealant layer 27 may be adhered by a dry laminating method using an adhesive layer 28 made of an adhesive such as urethane.

Next, the layer structure of the third film 17 will be described. The layer structure of the third film 17 is arbitrary as long as it has an inner surface of the first film 15 and an inner surface that can be bonded to the inner surface of the second film 16. For example, similarly to the first film 15 and the second film 16, the above-mentioned laminate 25 may be used as the third film 17. Alternatively, a film having an inner surface composed of a sealant layer and having a structure different from that of the laminated body 25 may be used as the third film 17.

First Member and Second Member Next, the configurations of the first member 31 and the second member 32 will be described with reference to FIGS. 1, 3 and 4. FIG. 3 is a cross-sectional view showing a case where the bag 10 is cut along the line III of FIG. Further, FIG. 4 is a cross-sectional view showing a case where the bag 10 is cut along the IV line of FIG.

The first member 31 has a base film 31c including a first joint portion 31a and a first fitting portion 31b. As shown in FIG. 3, the base film 31c is a film located between the first film 15 and the second film 16 in the portion of the bag 10 near the upper portion 11. The above-mentioned first joint portion 31a is a portion of the base film 31c that is joined to the inner surface of the first film 15. The first fitting portion 31b is located so as not to overlap with the first joint portion 31a, and is provided in a portion of the base film 31c other than the first joint portion 31a. In the example shown in FIG. 3, the first joint portion 31a is located on the surface of the base film 31c facing the inner surface of the first film 15. As shown in FIG. 3, a portion of the first member 31 located between the first side seal portion 13a and the second side seal portion 14a is not joined to the second film 16.

The second member 32 has a second joint portion 32a and a second fitting portion 32b. As shown in FIG. 3, the second joint portion 32a is joined to the inner surface of the first film 15. Further, the second fitting portion 32b is configured to be matable with the first fitting portion 31b. FIG. 3 shows how the first fitting portion 31b and the second fitting portion 32b are fitted. In a plan view such as FIG. 1, the first joint portion 31a and the second joint portion 32a joined to the inner surface of the first film 15 are hatched differently from the hatches applied to the seal portion.

The method of joining the first joint portion 31a and the second joint portion 32a to the inner surface of the first film 15 is not particularly limited. For example, the inner surfaces of the first joint portion 31a, the second joint portion 32a, and the first film 15 are melted by heating or the like, and the first joint portion 31a and the inner surface of the first film 15 are welded together with the second joint portion 32a. It may be joined by welding the inner surface of the first film 15. Alternatively, the first joint portion 31a and the inner surface of the first film 15 may be bonded to each other using an adhesive or the like, and the second joint portion 32a and the inner surface of the first film 15 may be bonded to each other.

The base film 31c has a surface that can be bonded to the inner surface of the first film 15. The base film 31c has a thickness that allows it to be deformed following the deformation of the first film 15. The thickness of the base film 31c is, for example, 25 μm or less, and may be 15 μm or less. As the material constituting the base film 31c, polyethylene terephthalate (PET), stretched nylon (ONY), polybutylene terephthalate (PBT), or polyolefins such as polyethylene (PE) and polypropylene (PP) can be used.

Like the base film 31c, the second bonding portion 32a also has a surface that can be bonded to the inner surface of the first film 15. Further, the second joint portion 32a also has a thickness that can be deformed following the deformation of the first film 15. The thickness of the second joint portion 32a is, for example, 40 μm or less, and may be 30 μm or less. As a material constituting the second joint portion 32a, PP, polystyrene (PS), PE or the like can be used.

The shapes of the first fitting portion 31b and the second fitting portion 32b are not particularly limited as long as they can be fitted to each other. Specifically, as shown in FIG. 3, the first fitting portion 31b can be a female type and the second fitting portion 32b can be a male type. Further, although not shown, the first fitting portion 31b may be a male type and the second fitting portion 32b may be a female type.

The first fitting portion 31b and the second fitting portion 32b have heat resistance to the extent that they do not melt or be damaged when the contents are heated unless the temperature of the housing portion 18 rises above a certain level. PP, PS, PE or the like can be used as the material constituting the first fitting portion 31b and the second fitting portion 32b. The first fitting portion 31b may be integrally formed with the base film 31c. Further, the second fitting portion 32b may be integrally configured with the second joint portion 32a. In addition, "integral" means that there is no interface such as a joint surface between the two.

In the example shown in FIG. 3, the second fitting portion 32b overlaps the second joint portion 32a. That is, in the portion of the second member 32 that is joined to the inner surface of the first film 15, the second fitting portion 32b is provided on the side of the second film 16. However, the arrangement of the second fitting portion 32b is not limited to this. For example, although not shown, the second fitting portion 32b may be provided on a portion of the second member 32 that is not joined to the inner surface of the first film 15.

In the present embodiment, as shown in FIGS. 1 and 4, the first member 31 and the second member 32 are formed so as to reach from the first side seal portion 13a to the second side seal portion 14a. .. In the example shown in FIG. 1, the first joint portion 31a, the first fitting portion 31b, the second joint portion 32a, and the second fitting portion 32b are respectively from the first side portion sealing portion 13a to the second side portion sealing portion. It extends to 14a. Therefore, when the first fitting portion 31b and the second fitting portion 32b are fitted, a space 19 isolated from the accommodating portion 18 is formed inside the bag 10. The space 19 is surrounded by the first joint portion 31a, the base film 31c, the first fitting portion 31b, the second fitting portion 32b, the second joint portion 32a, and the first film 15.

Breaking mechanism Next, the breaking mechanism 33 will be described. The breaking mechanism 33 is a component for breaking the first film 15 and forming an opening communicating with the above-mentioned space 19 in the first film 15. The breaking mechanism 33 in the examples shown in FIGS. 1 and 3 breaks the first film 15 at a position between the first joint portion 31a and the second joint portion 32a to form an opening. Hereinafter, the opening formed by breaking the first film 15 using the breaking mechanism 33 is also referred to as a second opening. In the examples shown in FIGS. 1, 3 and 4, the breaking mechanism 33 has a strip-shaped member 331, a knob portion 332, a penetrating portion 333, and a tear prevention portion half-cut line 334.

The strip-shaped member 331 is provided so as to extend from the first side seal portion 13a to the second side seal portion 14a in the examples shown in FIGS. 1, 3 and 4. When the end portion of the strip-shaped member 331 on the first side portion 13 side is pulled toward the second side portion 14 side so as to separate the strip-shaped member 331 from the bag 10, the strip-shaped member 331 refers to the strip-shaped member 331 of the first film 15. A shearing force for tearing the first film 15 in the width direction of the bag 10 is applied to the portion overlapping the outer edge. As a result, the first film 15 can be formed with a second opening extending from the first side portion 13 side to the second side portion 14 side and having a width corresponding to the width of the strip-shaped member 331.

As shown in FIG. 3, the surface of the strip-shaped member 331 on the first film 15 side is joined to the inner surface of the first film 15. The surface of the breaking mechanism 33 on the side of the second film 16 may or may not be joined to the base film 31c of the first member 31. Even when the breaking mechanism 33 is bonded to the base film 31c, the breaking mechanism 33 is separated from the base film 31c when the first film 15 is broken by using the breaking mechanism 33. As long as the first film 15 can be broken by using the breaking mechanism 33, the surface of the breaking mechanism 33 on the first film 15 side includes a portion that is not joined to the inner surface of the first film 15. You may be.

In the example shown in FIG. 1, the knob portion 332 is connected to the end portion of the strip-shaped member 331 on the first side portion 13 side. The knob portion 332 is arranged so as to overlap the first side portion seal portion 13a. Further, the knob portion 332 has a shape that is easier for consumers to pick than the strip-shaped member 331. For example, the size of the knob portion 332 in the vertical direction of the bag 10 is larger than the size of the band-shaped member 331 in the vertical direction of the bag 10, that is, the width of the band-shaped member 331. The knob portion 332 may be integrally formed with the band-shaped member 331, or may be formed as a separate body from the band-shaped member 331. In the example shown in FIG. 1, the contour of the knob portion 332 is defined by the penetration portion 333 and the tear prevention portion half-cut line 334 described later. The knob portion 332 is formed, for example, after the first side portion seal portion 13a is formed by heat sealing.

In the example shown in FIGS. 1 and 4, the penetrating portion 333 penetrates the bag 10 from the first film 15 side to the second film 16 side in the first side sealing portion 13a. In other words, the penetrating portion 333 penetrates the first film 15, the strip-shaped member 331, the first member 31, and the second film 16 at the first side sealing portion 13a. The penetrating portion 333 is formed around the knob portion 332 and defines a part of the contour of the knob portion 332.

In the examples shown in FIGS. 1 and 4, the tear prevention portion half-cut line 334 is located at a position closer to the second side portion 14 than the knob portion 332 and at a position overlapping the first side portion seal portion 13a and the breaking mechanism 33. , The bag 10 is formed so as to penetrate the portion from the outer surface of the second film 16 to the surface of the breaking mechanism 33 on the second film 16 side. By separating the portion of the second film 16 and the first member 31 that is joined to the knob portion 332 from the strip-shaped member 331 by the tear prevention portion half-cut wire 334, the knob portion 332 and the strip-shaped member 331 are separated from the strip-shaped member 331 by the first film. The force required to pull up or push up to the 15 side can be reduced. Further, it is possible to prevent the second film 16 and the first member 31 that overlap the strip-shaped member 331 from being broken when the knob portion 332 and the strip-shaped member 331 are pulled up or pushed up toward the first film 15.

As a material constituting the strip-shaped member 331 of the breaking mechanism 33, PET, PS, PP or the like can be used. The thickness of the strip-shaped member 331 is, for example, 100 μm or more and 800 μm or less. The width of the band-shaped member 331 (the dimension of the band-shaped member 331 in the vertical direction of the bag 10) is, for example, 1 mm or more and 10 mm or less.

Opening mechanism Next, the opening mechanism 70 will be described. The opening mechanism 70 is a component for breaking the first film 15 and the second film 16 to form an opening in the bag 10 that communicates with the accommodating portion 18 of the bag 10. The opening mechanism 70 is located at a position that does not overlap with the first member 31 and the second member 32. In the example shown in FIG. 1, the opening mechanism 70 is provided below the first member 31 and the second member 32. The opening mechanism 70 breaks the first film 15 and the second film 16 at positions where they do not overlap with the first member 31 and the second member 32 to form an opening. Hereinafter, the opening formed by breaking the first film using the opening mechanism 70 is also referred to as an opening opening. In the examples shown in FIGS. 1 and 3, the opening mechanism 70 includes an opening start mechanism 71 and an opening assist mechanism 72.

The opening start mechanism 71 is a component for starting the breakage of the first film 15 and the second film 16. The opening start mechanism 71 is provided, for example, in at least one of the first side seal portion 13a and the second side seal portion 14a. In the example shown in FIG. 1, the opening start mechanism 71 is provided on the first side seal portion 13a. The specific aspect of the opening start mechanism 71 is not particularly limited as long as the first film 15 and the second film 16 can be started to break at a position where they do not overlap with the first member 31 and the second member 32. As the opening start mechanism 71, for example, a notch or a notch provided in the first side seal portion 13a or the second side seal portion 14a can be used. When the notch is used as the opening start mechanism 71, the notch has a shape that tapers from the first side portion 13 side to the second side portion 14 side, for example. In the example shown in FIG. 1, as the opening start mechanism 71, a notch having a triangular shape that tapers from the first side portion 13 side toward the second side portion 14 side is used.

The opening assist mechanism 72 is a component for guiding the traveling direction of the breakage of the first film 15 and the second film 16 caused by the opening start mechanism 71 in a desired direction. The opening assist mechanism 72 is, for example, a half-cut line located at a position where at least one of the first film 15 and the second film 16 breaks the first film 15 or the second film 16. Here, the half-cut line refers to a recess formed in a part of the first film 15 or the second film 16 and having a shape that does not penetrate the first film 15 or the second film 16. .. In the examples shown in FIGS. 1 and 3, a half-cut line located on the surface of the first film 15 and the second film 16 opposite to the accommodating portion 18 is used as the opening assist mechanism 72. In the example shown in FIG. 1, the half-cut line, which is the opening assist mechanism 72, extends linearly from the first side portion 13 to the second side portion 14 of the bag 10 on the first film 15 and the second film 16, respectively. ing. Further, in the example shown in FIG. 1, the half-cut line of the opening assist mechanism 72 is in contact with the end of the notch, which is the opening start mechanism 71, on the second side 14 side. As a result, the breakage initiated by the notch can be advanced along the half-cut line, and the opening opening described later can be formed at the position of the opening mechanism 70. Although not shown, the opening mechanism 70 does not have to have the opening assist mechanism 72.

Manufacturing Method of Bag Next, the manufacturing method of the bag 10 in the present embodiment will be described with reference to FIGS. 5 and 6. FIG. 5 is a perspective view showing how the components of the bag 10 are overlapped and joined in the manufacturing process of the bag 10. FIG. 6 shows the first member 31, the second member 32, and the second member 32 in the step of joining the first joint portion 31a of the first member 31 and the second joint portion 32a of the second member 32 to the inner surface of the first film 15, respectively. It is a figure which showed the state of the 1st film 15.

First, as shown in FIG. 5, the first film 15, the second film 16, the first member 31, the second member 32, and the breaking mechanism 33 are prepared. In the present embodiment, the breaking mechanism 33 is detachably attached to the first member 31 at a position in contact with the first joint portion 31a of the first member 31 in advance. The first film 15, the second film 16, the first member 31, the second member 32, and the breaking mechanism 33 may each be prepared as long members extending along the direction in which the breaking mechanism 33 extends.

Next, the first joint portion 31a of the first member 31 and the second joint portion 32a of the second member 32 are joined to the inner surface of the first film 15, respectively. Further, the folded third film 17 is inserted into the lower 12 side of the first film 15 and the second film 16, and the inner surfaces of the films are heat-sealed to each other to heat-seal the lower seal portion 12a and the first side seal. A seal portion such as a portion 13a and a second side portion seal portion 14a is formed. In the step of joining the first joint portion 31a and the second joint portion 32a to the inner surface of the first film 15, as shown in FIG. 6, the baffle plate 51 is between the first member 31 and the second member 32. May be inserted. As a result, it is possible to prevent the first member 31 and the second member 32 from being joined.

Then, the films bonded to each other by heat sealing are cut out in the shape of the bag 10. In this way, the bag 10 shown in FIG. 1 can be obtained.

Method of filling the first content Next, a method of filling the above-mentioned bag 10 with the first content will be described. First, the bag 10 is filled with the first content 61 through the first opening 11b of the upper portion 11 of the bag 10 shown in FIGS. 1 and 3. Next, the upper portion 11 of the bag 10 containing the first content 61 is heat-sealed to form the upper seal portion 11a. In this way, the bag 10 in which the first content 61 is housed and sealed can be obtained. FIG. 7 is a front view showing the bag 10 in a state where the upper portion 11 is sealed. Further, FIG. 8 is a cross-sectional view showing a case where the bag 10 is cut along the line VIII of FIG.

When the bag 10 is filled with the first content 61 through the first opening 11b of the upper portion 11 of the bag 10, the first content 61 passes between the second film 16 and the first member 31. Therefore, according to the present embodiment, the first content 61 can be filled in the accommodating portion 18 without passing between the first fitting portion 31b and the second fitting portion 32b. Therefore, it is possible to prevent the first content 61 from adhering to the first fitting portion 31b and the second fitting portion 32b, so that the first fitting portion 61 is caused by the adhesion of the first content 61. It is possible to suppress a decrease in the fitting force between the 31b and the second fitting portion 32b. Further, it is possible to prevent the first content 61 from adhering to the consumer's hand when the consumer opens the first fitting portion 31b and the second fitting portion 32b.

How to Use the Bag Next, an example of a method in which the consumer uses the bag 10 containing the first content 61 will be described. First, the consumer carries out the first opening step of opening the bag 10 by using the breaking mechanism 33. FIG. 9 is a perspective view showing the bag 10 in an opened state. FIG. 10 is a cross-sectional view showing a bag 10 in a state of being opened in the first opening step.

Hereinafter, a method of opening the bag 10 by using the breaking mechanism 33 will be described. First, the consumer raises the knob portion 332 of the bag 10 toward the first film 15 side and picks the knob portion 332. Next, the consumer pulls the knob portion 332 from the first side portion 13 side toward the second side portion 14 side. As a result, the breaking mechanism 33 is peeled off from the second member 32, and the first film 15 is torn in the width direction of the bag 10 at the portion of the first film 15 that overlaps with the outer edge of the strip-shaped member 331 of the breaking mechanism 33. Shear force can be applied. As a result, as shown in FIGS. 9 and 10, a second opening 11c having a shape corresponding to the strip-shaped member 331 is formed in the first film 15 between the first joint portion 31a and the second joint portion 32a. can do. Note that FIG. 9 shows the bag 10 when the knob portion 332 is pulled until the breaking mechanism 33 separates from the bag 10, but the method for breaking the first film 15 is not limited to this. Absent. For example, the consumer may stop pulling the knob portion 332 while the breaking mechanism 33 is connected to the bag 10 on the second side portion 14 side. Further, when the first fitting portion 31b and the second fitting portion 32b are previously fitted, the consumer puts the bag 10 so as to widen the space between the first member 31 and the second member 32. A force is applied to disengage the fitting between the first fitting portion 31b and the second fitting portion 32b. In this way, the second opening 11c communicating with the accommodating portion 18 can be formed in the bag 10.

Subsequently, the consumer carries out a storage step of adding the second content 62 to the storage portion 18 of the bag 10 via the second opening 11c. Next, as shown in FIG. 11, the consumer carries out a sealing step of sealing the bag 10 by fitting the first fitting portion 31b and the second fitting portion 32b. In this way, after adding the second content 62 to the bag 10, the bag 10 can be resealed.

Subsequently, the consumer heats the contents using a microwave oven with the lower portion 12 facing down and the bag 10 standing on its own.

When the contents are heated, the temperatures of the first contents 61 and the second contents 62 become high, and the water contained in the first contents 61 and the second contents 62 evaporates accordingly. It is conceivable that the pressure of the accommodating portion 18 will increase. Here, in the present embodiment, when the pressure of the accommodating portion 18 increases and the first film 15 and the second film 16 swell outward, the base film 31c provided with the first fitting portion 31b is also the first. It can be deformed in the same manner as the film 15. Therefore, the pressure or temperature of the accommodating portion 18 is constant at the distance between the base film 31c provided with the first fitting portion 31b and the first film 15 provided with the second fitting portion 32b. Unless it becomes larger than this, it will not spread due to the increase in pressure of the accommodating portion 18. Therefore, while the first content 61 and the second content 62 are being heated, the fitting between the first fitting portion 31b and the second fitting portion 32b can be stably maintained. As a result, sufficient pressure and heat can be applied to the first content 61 and the second content 62.

In addition, when the pressure or temperature of the accommodating portion 18 becomes higher than a certain level in the case where the heating of the contents progresses, the first fitting portion 31b and the second fitting portion 31b and the second due to the increase in the pressure or temperature of the accommodating portion 18. The fitting with the fitting portion 32b may be partially released. In this case, the first content 61 and the second content 62 can be heated while letting the steam of the accommodating portion 18 escape to the outside through the portion where the fitting is partially released.

After heating the first content 61 and the second content 62, the consumer uses the opening mechanism 70 to open the bag 10 and remove the mixture of the first content 61 and the second content 62 from the bag 10. The second opening step of taking out is carried out. FIG. 12 is a front view showing the bag 10 in a state of being opened in the second opening step.

Hereinafter, a method of opening the bag 10 by using the opening mechanism 70 will be described. First, the consumer picks the first side portion 13 side above the opening mechanism 70 of the bag 10 and pulls it toward the second side portion 14 side, for example, while pressing the lower portion of the bag 10 opening mechanism 70. Here, in the present embodiment, the opening mechanism 70 has a notch located in the first side seal portion 13a as the opening start mechanism 71. Therefore, by the above-mentioned operation, the breakage of the first film 15 and the second film 16 can be started from the notch as a starting point. Further, in the present embodiment, the opening mechanism 70 has a half-cut line in contact with the notch as the opening assist mechanism 72. This allows the fracture initiated by the notch to proceed along the half-cut line. As described above, as shown in FIG. 12, the consumer can tear the bag 10 to form the opening opening 11d in the bag 10 and take out the first content 61 and the second content 62 through the opening opening 11d. it can.

Hereinafter, the effect of the bag 10 according to the present embodiment will be described. In the bag 10 according to the present embodiment, as shown in FIGS. 3 and 8, a portion of the first member 31 located between the first side seal portion 13a and the second side seal portion 14a is located. , Not bonded to the second film 16. As a result, when the pressure of the accommodating portion 18 increases and the first film 15 and the second film 16 swell outward, the base film 31c provided with the first fitting portion 31b is also deformed in the same manner as the first film 15. To do. That is, the base film 31c also swells toward the first film 15. Therefore, the pressure or temperature of the accommodating portion 18 is constant at the distance between the base film 31c provided with the first fitting portion 31b and the first film 15 provided with the second fitting portion 32b. Unless it becomes larger than this, it will not spread due to the increase in pressure of the accommodating portion 18. Therefore, while the first content 61 and the second content 62 are being heated, the fitting between the first fitting portion 31b and the second fitting portion 32b can be stably maintained. Further, as shown in FIG. 3, the portion of the first member 31 located between the first side seal portion 13a and the second side seal portion 14a is not joined to the second film 16. , The first opening 11b between the second film 16 and the first member 31 can communicate with the accommodating portion 18. Therefore, the first content 61 can be filled in the accommodating portion 18 through the first opening 11b without passing between the first fitting portion 31b and the second fitting portion 32b.

Further, in the bag 10 according to the present embodiment, as shown in FIGS. 1 and 7, the first joint portion 31a, the first fitting portion 31b, the second joint portion 32a, and the second fitting portion 32b are respectively. , Extends from the first side seal portion 13a to the second side seal portion 14a. As a result, as shown in FIG. 9, when the second opening 11c is formed between the first side sealing portion 13a and the second side sealing portion 14a, the first fitting portion 31b and the second fitting portion 31b are fitted. By fitting the joint portion 32b, the second opening 11c can be closed and the bag 10 can be sealed.

Further, the bag 10 according to the present embodiment includes an opening mechanism 70 as shown in FIGS. 1, 3 and 4. The action and effect brought about by the opening mechanism 70 according to the present embodiment will be specifically described by comparing with a comparative example.

[Comparative example]
As a comparative example, for a bag similar to the bag 10 according to the present embodiment except that it does not have the opening mechanism 70, after heating the contents, between the first fitting portion 31b and the second fitting portion 32b. Consider a case where the fitting is removed, the second opening 11c is formed again, and the contents are taken out through the second opening 11c. In this case, there is a concern that the contents may be caught in the first fitting portion 31b or the second fitting portion 32b of the second member 32. Further, the portion of the first member 31 located between the first side seal portion 13a and the second side seal portion 14a is not joined to the second film 16. Therefore, when trying to take out the contents, the contents enter the space between the second film 16 and the first member 31 instead of the space between the first member 31 and the second member 32. It is possible that it will end up.

On the other hand, as shown in FIG. 1, the bag 10 according to the present embodiment has an opening mechanism that breaks the first film 15 and the second film 16 at positions that do not overlap with the first member 31 and the second member 32. 70 is provided. Then, as shown in FIG. 12, the opening mechanism 70 forms the opening opening 11d at a position where it does not overlap with the first member 31 and the second member 32. Therefore, the contents can be taken out without passing between the first fitting portion 31b of the first member 31 and the second fitting portion 32b of the second member 32.

Further, in the bag 10 according to the present embodiment, as shown in FIGS. 1 and 3, the opening mechanism 70 is provided below the first member 31 and the second member 32. Therefore, when the first film 15 and the second film 16 are broken by the opening mechanism 70, the first member 31 and the second member 32 are removed from the lower 12 side of the bag 10 as shown in FIG. This makes it possible to prevent the contents from entering the space between the first member 31 and the second member 32 when the contents are taken out.

(First modification)
In the above-described embodiment, the bag 10 in which the opening mechanism 70 is provided on the lower 12 side of the first member 31 and the second member 32 has been described. However, the present invention is not limited to this, and as shown in FIG. 13, the opening mechanism 70 may be provided on the upper 11 side of the first member 31 and the second member 32.

(Second modification)
In the above-described embodiment and modification, the bag 10 is a bottom gusset type bag including the first film 15, the second film 16, and the third film 17. However, the present invention is not limited to this, and as shown in FIG. 14, the bag 10 may be a so-called flat pouch including the first film 15 and the second film 16. In this case, the bag 10 is placed in a microwave oven while the posture of the bag 10 is maintained so that the first fitting portion 31b and the second fitting portion 32b are located above the center point C of the housing portion 18 in the vertical direction. Is heated by. For example, when the bag 10 is sold in a paper box (not shown), the box can be used to maintain the bag 10 in a predetermined posture. The center point C is defined as the midpoint of the line segment connecting the midpoint of the inner edge of the upper seal portion of the bag 10 with the upper portion 11 sealed and the midpoint of the inner edge of the lower seal portion 12a. It is a point.

(Third variant)
In the above-described embodiment and each modification, an example is shown in which the breaking mechanism 33 has a strip-shaped member 331 and the first film 15 is broken by pulling the end portion of the strip-shaped member 331. However, the mode of the breaking mechanism 33 is not limited to this. FIG. 15 is a front view showing a case where the bag 10 according to the third modification is viewed from the front surface side. FIG. 16 is a cross-sectional view showing a case where the bag 10 according to the third modification is cut along the XVI line of FIG. Further, FIG. 17 is a cross-sectional view showing a case where the bag 10 according to the third modification is cut along the line XVII of FIG. As shown in FIGS. 15, 16 and 17, the breaking mechanism 33 according to the third modification includes a pair of cutting portion half-cut lines 335, a knob portion 332, and a penetrating portion 333. Further, in the examples shown in FIGS. 15 and 17, the breaking mechanism 33 further includes a tear prevention portion half-cut line 334.

A pair of cut portion half cut lines 335 will be described. As shown in FIG. 15, the pair of cut portion half-cut lines 335 are located on the first film 15 and extend from the first side portion seal portion 13a side to the second side portion seal portion 14a side. Here, the cut portion half-cut line 335 is a recess formed in a part of the first film 15 composed of the laminated body 25 as shown in FIG. 2, for example, and all the layers of the laminated body 25. Refers to a shape that does not penetrate through. In the example shown in FIG. 15, the pair of cut half-cut lines 335 are arranged in parallel. Further, the pair of cut portion half-cut lines 335 extend from the side of the bag 10 on the first side portion 13 side to the side of the second side portion 14 side. The cut portion half-cut line 335 makes it easier for the first film 15 to break along the cut portion half-cut line 335.

Next, the knob portion 332, the penetrating portion 333, and the tear prevention portion half-cut line 334 according to the third modification will be described. The knob portion 332 according to the third modification is a portion that can be picked when the consumer breaks the first film 15 along the pair of cut portion half-cut lines 335. As shown in FIG. 17, the knob portion 332 includes the first film 15, the first member 31, and the second film 16. In the example shown in FIGS. 15 and 17, the knob portion 332 can be picked by the consumer because the penetrating portion 333 is provided in a part of the first film 15, the first member 31, and the second film 16. It is configured so that it can be done. The knob portion 332 includes a base portion 332a located between the pair of cut portion half-cut lines 335. In the example shown in FIG. 15, the base portion 332a is a portion of the knob portion 332 located on the second side portion 14 side, and is a second side portion of the first film 15 and the knob portion 332 included in the knob portion 332. The first film 15 located on the side is a portion connected between the pair of cut portion half-cut lines 335. The knob portion 332 has a shape that is easy for consumers to pick. For example, the size of the knob portion 332 in the vertical direction of the bag 10 is larger than the distance between the pair of cut portion half-cut lines 335 in the vertical direction of the bag 10.

As shown in FIGS. 15 and 17, the penetrating portion 333 according to the third modification penetrates the first film 15, the first member 31, and the second film 16 at the first side sealing portion 13a. The penetrating portion 333 is formed around the knob portion 332 and defines a part of the contour of the knob portion 332. Further, as shown in FIG. 15, the penetrating portion 333 includes one end 333a and the other end 333b connected to the base portion 332a of the knob portion 332. The one end 333a and the other end 333b of the penetrating portion 333 may be directly connected to the base portion 332a of the knob portion 332 as shown in FIG. 15, or, although not shown, a pair of cut portions half-cut. It may be connected to the base portion 332a of the knob portion 332 via the wire 335.

As shown in FIG. 15, the tear prevention portion half-cut line 334 according to the third modification is located on the second film 16 on the accommodating portion 18 side of the knob portion 332, and the pair of cut portion half-cut lines 335 are formed. Cross. In the example shown in FIG. 15, the tear prevention portion half-cut line 334 is located at the first side seal portion 13a. Further, in the example shown in FIG. 17, the tear prevention portion half-cut line 334 penetrates the portion of the bag 10 from the outer surface of the second film 16 to the surface of the first member 31 on the first film 15 side. In the example shown in FIG. 15, the tear prevention portion half-cut line 334 is formed around the knob portion 332 and defines the contour of the knob portion 332 at the base portion 332a. The tear-preventing portion half-cut wire 334 causes the portion of the second film 16 and the first member 31 included in the knob portion 332 to be closer to the accommodating portion 18 than the knob portion 332 of the second film 16 and the first member 31. By separating from the portion, the force required to pull up or push up the knob portion 332 toward the first film 15 side can be reduced. Further, when the second film 16 or the first member 31 overlapping the portion of the first film 15 located between the pair of cut portion half-cut lines 335 pulls up or pushes up the knob portion 332 toward the first film 15. It is possible to prevent the film from breaking.

(Fourth modification)
In the above-described embodiment and each modification, the first content 61 is housed in the bag 10 which is sealed by the upper seal portion 11a but is not opened at the breaking mechanism 33. An example is shown. However, the present invention is not limited to this, and the contents may not be contained in the bag 10 which is sealed by the upper seal portion 11a but is not opened at the breaking mechanism 33. In this case, the consumer uses the breaking mechanism 33 to open the bag 10 and then puts the contents into the storage portion 18 of the bag 10 through the second opening 11c. Subsequently, after fitting the first fitting portion 31b and the second fitting portion 32b, the contents may be heated using a microwave oven.

Although some modifications to the above-described embodiments have been described, it is naturally possible to apply a plurality of modifications in combination as appropriate.

10 Bag 11 Upper part 11a Upper seal part 11b First opening 11c Second opening 11d Opening opening 12 Lower part 12a Lower seal part 13 First side part 13a First side part Seal part 14 Second side part 14a Second side part Sealing part 15 1st film 16 2nd film 17 3rd film 17f Folded part 18 Housing part 19 Space 20 Steam venting mechanism 20a Steam venting Sealing part 20b Non-sealing part 20c Through hole 25 Laminated body 25x Inner surface 25y Outer surface 26 Base material layer 27 Sealant layer 28 Adhesive layer 31 First member 31a First joint 31b First fitting 31c Base film 32 Second member 32a Second joining 32b Second fitting 33 Breaking mechanism 331 Band-shaped member 332 Knob 332a Base 333 Penetration part 334 Tear prevention part Half cut line 335 Cut part Half cut line 51 Baffle plate 61 1st content 62 2nd content 70 Opening mechanism 71 Opening start mechanism 72 Opening assist mechanism

Claims (5)

A bag with a storage compartment for the contents
The first film constituting the first surface of the bag and
A second film forming a second surface facing the first surface, and a second film defining the accommodating portion with the first film.
A first side seal portion and a second side seal portion that extend along the outer edge of the bag and face each other to join the first film and the second film.
A first member having a first joint portion bonded to the inner surface of the first film and a first fitting portion positioned so as not to overlap the first joint portion.
A second member having a second joint portion bonded to the inner surface of the first film and a second fitting portion capable of fitting with the first fitting portion.
A breaking mechanism for breaking the first film at a position between the first joint and the second joint,
It is provided with an opening mechanism for breaking the first film and the second film at a position where the first member and the second member do not overlap with each other.
The first joint portion and the first fitting portion of the first member, and the second fitting portion and the second joint portion of the second member are each from the first side portion seal portion to the second side. It extends to the part seal part and
A bag in which the portion of the first member located between the first side seal portion and the second side seal portion is not joined to the second film. The bag according to claim 1, further comprising a third film located between the first film and the second film and forming a lower portion of the bag. The bag according to claim 2, wherein the opening mechanism is provided on the upper side of the first member and the second member. The bag according to claim 2, wherein the opening mechanism is provided on the lower side of the first member and the second member. The method of using the bag according to any one of claims 1 to 4.
The first opening step of breaking the first film at a position between the first joint portion and the second joint portion using the break mechanism to form an opening communicating with the accommodating portion.
A storage step of storing the contents in the bag through the opening, and
A sealing step of fitting the first fitting portion and the second fitting portion to seal the bag.
A second opening step of using the opening mechanism to break the first film and the second film at positions that do not overlap with the first member and the second member to form an opening opening communicating with the accommodating portion. How to use the bag, including.