KR102018105B1 - Packaging bag - Google Patents

Abstract

This invention makes it a subject to provide the packaging bag which improved the steam releasing.
In order to solve the said subject, the packaging bag of this invention is a packaging bag which has the sealing part 8a formed by sealing the peripheral edge part of the film which comprises the film which comprises an upper surface part, and the film which comprises a lower surface part, and is a part of sealing part 8a. Has a vapor releasing sealing portion 7 formed by protruding in a curved shape toward the inner side, and the steam releasing sealing portion 7 has a width of the sealing at least at the distal end portion and other portions in the inner direction than at least the sealing portion 8a. It is different, and the tip end is narrow, and when a packaging bag expands and the steam releasing seal | sticker part 7 peels off, another part remains and protrudes inwardly from the sealing part 8a in the remaining part. The edge portion 7a is formed.

Description

Packing bag

According to the present invention, water vapor generated in the inside of the packaging bag is opened by the opening of the packaging bag by the vapor pressure when the packaging bag filled with the contents such as a retort food, such as a liquid, a solid, or a mixture thereof, is heated. It relates to a packaging bag that can be released to the outside.

If a packaging bag filled with contents such as retort food is heated in a microwave oven or the like, the pressure inside the packaging bag is increased by the gas such as water vapor generated from the contents, and the packaging bag is ruptured, causing the contents to scatter. There is.

For this reason, there is a packaging bag provided with a mechanism for avoiding a pressure rise inside the packaging bag (for example, Patent Document 1: Japanese Patent Laid-Open No. 2002-80072, Patent Document 2: Japanese Patent Laid-Open No. 2005-) 82172, Patent Document 3: Japanese Patent Laid-Open No. 2003-182779, Patent Document 4: Japanese Patent Laid-Open No. 2005-320023, Patent Document 5: Japanese Patent No. 3665795).

In Patent Document 1, a curved heat seal (steam releasing seal portion) for concentrating stress when the pressure rises when the microwave oven is heated and cooked is provided, and the steam releasing seal portion is first peeled off, whereby steam is released from there. It is released to prevent the packaging bag from rupturing. The steam releasing sealing portion is a portion that seals an area between an inner curved shape that is a curved shape on the inner side of the packaging bag and an outer curved shape that is a curved shape on the outer side of the packaging bag, and protrudes in a curved shape toward the inner side of the packaging bag. That's the part.

The packaging bag of the patent document 1 may preferentially peel off the steam releasing seal to release steam to the outside to prevent the packaging bag from rupturing. However, since the packaging bag disclosed by patent document 1 does not have a means to inform that it is opened, it is necessary to visually confirm that the packaging bag was opened. For this reason, for example, when the contents of the packaging bag are heated and cooked in a microwave oven, the contents of the packaging bag are excessive after seeing that the packaging bag is opened due to leaving the microwave oven or performing other tasks. It is heated so that moisture is taken out and the taste is reduced. In addition, depending on the type of contents, heating can be improved after the opening of the packaging bag for a certain period of time, and the taste can be improved by the steaming effect. However, if the packaging bag is missed, the proper steaming time cannot be determined. do.

For this reason, there exists a packaging bag which can announce by opening that a packaging bag opened.

In the said patent document 2, the unsealing part has a vibrating piece which cuts an air accumulator and the unsealing part itself, etc., and makes a sound generate | occur | produce by vibrating a vibrating piece with the steam collected by the air accumulator. This makes it possible for the said patent document 2 to announce by opening that the packaging bag opened by processing the fabric material itself which comprises a packaging bag.

In the said patent document 3, notch or incision which is an easy means of passing a steam is performed in the sealing part surrounding all directions, and the steam is dissipated to the outside by the sealing retreat of a sealing part and an easy means of passing a steam.

Further, in Patent Documents 1 and 4, a substantially V-shaped heat seal (steam releasing seal portion) for concentrating the stress at the time of pressure rise when heating and cooking in a microwave oven is provided, whereby the steam releasing seal portion is first peeled off. Steam is released from the outside.

In addition, the packaging bag for a microwave oven disclosed in Patent Document 5 is provided with a gadget at the bottom of the packaging bag in consideration of the user's convenience, such as when filling the contents or displaying the product, so that the cross section becomes a substantially triangular shape so that the bottom portion is sitting. A stand up type microwave oven bag is disclosed.

Japanese Patent Publication No. 2002-80072 Japanese Patent Publication No. 2005-82172 Japanese Patent Publication No. 2003-182779 Japanese Patent Publication No. 2005-320023 Japanese Patent No. 3665795

Packaging bags having such a mechanism for releasing steam are widely spread out from their convenience and further improvement is strongly desired.

Accordingly, an object of the present invention is to provide a packaging bag in which the improvement related to steam bleeding is performed.

In order to achieve this object, the present invention has the following features.

The packaging bag according to the present invention has a vapor releasing seal portion that protrudes by bending a portion of the sealing portion to which the film is bonded to the inside, and the vapor releasing sealing portion has a peel strength of at least a portion less than that of the portion other than the portion, When peeling by the vapor pressure, it is characterized in that the remaining portion other than the above part forms an edge portion and makes a sound as the steam is released.

According to this invention, the packaging bag which improved on steam releasing can be proposed.

1: is a figure which shows the structural example of the packaging bag 100 of 1st Embodiment, (a) is a perspective view of the packaging bag 100 before sealing the opening 4, (b) the packaging bag 100 ) Is a perspective view of the packaging bag 100 containing the contents D in the package and heat-sealed with the opening 4.
2 is a view showing an example of the configuration of the vapor releasing sealing portion 7 and the unsealing portions 9 (9a, 9b).
3 is a view for explaining the function of the packaging bag 100 of the present embodiment, (a) is a packaging bag showing an expanded state by heating the packaging bag 100 of FIG. 100 is a side view, and (b) is a view showing a state in which the tip 70 of the steam releasing sealing portion 7 is opened at the time of high pressure expansion so that a vapor discharge portion is formed, and (c) shows the packing bag 100 It is a perspective view of the packaging bag 100 which shows the state expanded by heating in a range.
4 is a diagram for explaining an example in which sound is generated when a vapor discharge unit is formed.
5 is a view for explaining a vapor discharge unit.
FIG. 6: is a figure which shows the structural example of the packaging bag 100 of this embodiment.
FIG. 7: is a figure which shows the structural example of the packaging bag 100 of this embodiment.
FIG. 8 is a view for explaining an example in which sound is generated in the structural example shown in FIG. 7C.
It is a figure which shows the structural example of the packaging bag of Examples 1-5, and shows the structural example of the steam releasing sealing part before and behind peeling.
It is a figure which shows the structural example of the packaging bag of Comparative Examples 1-2, and is a figure which shows the structural example of the steam releasing sealing part before and behind peeling.
FIG. 11 is a view showing a structural example of the packaging bag 200 of the second embodiment and the packaging bag 300 of the third embodiment, wherein (a) shows the packaging bag before sealing the opening 4 {200 (300 }), (B) is a perspective view of the packaging bag {200 (300)} which received the contents D in the packaging bag 200 (300) and heat-sealed the opening 4 to seal it.
FIG. 12: is a figure which shows the structural example of the steam releasing sealing part 7 and the unsealing part 9 (polygonal unsealing part 9a, strip | belt-shaped unsealing part 9b).
13 is a view for explaining the function of the packaging bag 200 of the present embodiment, (a) is a packaging bag showing an expanded state by heating the packaging bag 200 of Figure 1 (b) ( (B) is a figure which shows the state in which the tip 70 of the steam releasing sealing part 7 opened at the time of high pressure expansion, and the 1st steam discharge | release part 101 was formed.
FIG. 14: is a figure which shows the example of 1 structure of the film mounting part 6 of 3rd Embodiment.
FIG. 15: is a figure which shows the laminated constitution example in each part 7, 8a, 8b which comprises the film encapsulation part 6 shown in FIG. 14, (a) is the 2nd sealing part 8b shown in FIG. ) Shows a layer structure example, (b) shows the layer structure example in the 1st sealing part 8a shown in FIG. 14, (c) shows the steam releasing sealing part 7 shown in FIG. It is a figure which shows the laminated constitution example in this.
FIG. 16: is a figure which shows the structural example of the packaging bag 300 of this embodiment.
17 is a perspective view of a container according to a fourth embodiment.
18 is an exploded view of a container according to an embodiment.
19 is a top view of the container according to the present embodiment.
20 is a perspective view of a packaging bag according to the present embodiment.
Fig. 21 is a view showing that the container and the packaging bag according to the present embodiment are integrated.
22 is a view showing an expanded state by heating the container and the bag in a microwave oven.
It is a figure which shows the folding container which concerns on this embodiment.
24 is a developed view showing a folding container according to the present embodiment.
25 is a perspective view showing a container and a packaging bag placed on a plane.
Fig. 26 is a front view showing the container and the packaging bag standing up;

"First embodiment"

This embodiment is an improvement regarding the packaging bag which produces a sound at the time of steam | emission.

Patent Document 2 exemplified in the prior art is configured to make an incision by punching or the like on the periphery of the vibrating piece, to vibrate the vibrating piece violently by steam, and to discharge steam to the outside from the periphery of the vibrating piece. It is necessary to process the unsealed portion itself.

For this reason, the packaging bag of the said patent document 2 forms a unsealed part by heat-sealing the packaging material which comprises a packaging bag, and punches into the unsealed part, and forms a vibrating piece, or the unsealed packaging material. It is necessary to form a vibrating piece in advance by punching a part, and in order to comprise the mechanism which generate | occur | produces a sound, it is necessary to perform other processing other than the process of heat-sealing a fabric material.

This embodiment is made in view of the said situation, and an object of this invention is to provide the packaging bag which can generate a sound only in the shape of the sealing part which seals and forms a film.

<Summary of the packaging bag 100 of this embodiment>

First, the outline | summary of the packaging bag 100 of this embodiment is demonstrated, referring FIGS. 1-4.

As shown in FIG. 1, the sealing bag 100 of this embodiment seal | sticker formed by sealing the peripheral edge part of the film which comprises the upper surface part {2 (2a, 2b)}, and the film which comprises the lower surface part 1. It is the packaging bag 100 which has (3, 5, 10, 8a, 8b).

The packaging bag 100 of this embodiment has the vapor releasing sealing part 7 and steam releasing which formed the substantially center part of the sealing part 8a to be protruded substantially in V shape toward the inner direction of the packaging bag 100, and steam releasing. It has a non-sealing portion {9 (9a, 9b)} formed adjacent to the sealing portion 7 without sealing the steam releasing sealing portion 7, the internal pressure of the packaging bag 100 rises, the packaging bag When the 100 is inflated, the vapor releasing sealing portion 7 is peeled off and is opened, and the vapor discharge portion for releasing the vapor in the packaging bag 100 into the opened area and the unsealed portions 9 (9a, 9b). Form.

The steam releasing seal | sticker part 7 of this embodiment is formed in the sealing shape which protruded inward more than the substantially V-shaped sealing part 8a, and also connects the starting points 71 and 71 of two points which start a curved shape. It is comprised in the inner direction part of the packaging bag 100 from one line. In the steam releasing seal | sticker part 7 of this embodiment, the sealing width | variety differs in a tip part and the other part between the starting points 71 and 71 of at least two points which start a curved shape, and the steam releasing seal | sticker part 7 When the tip 70 side of the side becomes narrow, and the packaging bag 100 expands and the vapor releasing seal | sticker part 7 peels as shown in FIG.3 (b), the other part remains and the remainder It is characterized in that the outer edge portion 7a protruding inwardly from the sealing portion 8a is formed.

In the packaging bag 100 of the present embodiment, since the edge portion 7a protruding inwardly from the sealing portion 8a is formed, gas such as water vapor in the packaging bag 100 flows from the vapor discharge portion to the packaging bag 100. Part of the gas hits the edge portion 7a when discharged outward. When the gas strikes the edge portion 7a, the flow of the gas is changed and a vortex is generated to generate sound. As a result, the sound can be generated only by the shape of the vapor releasing sealing portion 7 formed by sealing the film. The packaging bag 100 of this embodiment is demonstrated in detail, referring an accompanying drawing below.

(Example 1 of the first embodiment)

<Configuration example of the packaging bag 100>

First, the structural example of the packaging bag 100 of this embodiment is demonstrated, referring FIGS. 1-3. FIG. 1: is a figure which shows the structural example of the packaging bag 100 of this embodiment, FIG. 1 (a) is a perspective view of the packaging bag 100 before sealing the opening 4, and FIG. 1 (b) is a packaging The perspective view of the packaging bag 100 which accommodated the content D in the bag 100, and heat-sealed the opening 4 and sealed. FIG. 2: is a figure which shows the structural example of the steam releasing sealing part 7 and the unsealing part 9 (9a, 9b) provided in the film mounting part 6 shown in FIG. FIG. 3 shows a configuration example of the packaging bag 100 showing an expanded state by heating the packaging bag 100 shown in FIG. 1 (b) in a microwave oven, and FIG. 3 (a) is a side view of the packaging bag 100. 3B is a view showing a state in which the tip 70 of the vapor releasing seal portion 7 is opened to form a vapor discharge portion, and FIG. 3C is a perspective view of the packaging bag 100.

As shown in FIG. 1, the packaging bag 100 of the present embodiment includes the lower surface portion 1 and the upper surface portion 2a and the lower surface portion 1 of the opening side which are stacked on the opening 4 side of the lower surface portion 1. It consists of the longitudinal side upper surface part 2b superposed on a longitudinal side. The packaging bag 100 of this embodiment comprises the upper surface part 2 by the opening side upper surface part 2a and the length side upper surface part 2b.

As the film constituting the lower surface portion 1, the opening side upper surface portion 2a and the length side upper surface portion 2b, any film can be applied as long as the films are welded to each other when heat-sealed. For example, ordinary packaging The plastic film which has heat sealing property used for sealing is applicable. As a material which comprises a plastic film, the single-layer film which consists of a thermoplastic resin which has heat sealing property, the multilayer film which laminated | stacked sheets and the thermoplastic resin which has heat sealing property, etc. are mentioned, for example.

Examples of the material having good heat sealing properties include known low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, polypropylene, propylene-ethylene copolymer, ethylene-vinyl acetate copolymer, ethylenically unsaturated carboxylic acid and the like. Olefin resins such as olefin resins graft-modified with anhydride, polyamide to copolyamide resins having a relatively low melting point to low softening point, polyester to copolyester resins, and polycarbonate resins.

Moreover, various barrier films can be used as another plastic material to laminate | stack. Moreover, when using the laminated | multilayer film with these thermoplastic resins, it is preferable to heat-sealing so that thermoplastic resin layers with favorable heat sealing properties, such as resin with low melting | fusing point, may become an inner surface.

The packaging bag 100 of this embodiment forms the part of the side sealing part 3 by heat-sealing both edges of the lower surface part 1 and the opening side upper surface part 2a. In addition, the three-side edges of the lower surface portion 1 and the length-side upper surface portion 2b are heat-sealed to form a part of the side sealing portion 3 and the end sealing portion 5. Moreover, the opening side upper surface part 2a and the length side upper surface part 2b are folded, overlapped, and heat-sealed, and the film encapsulation part 6 is formed.

The film encapsulation part 6 has a vapor releasing sealing part 7 which protrudes by bending substantially V-shaped toward the inner side of the packaging bag 100 at the central part of the long side direction of the film encapsulation part 6, On both sides of the vapor releasing sealing portion 7, the strip-shaped end sealing portions 8a and 8a are formed along the long edge of the film encapsulation portion 6. Moreover, it has strip | belt-shaped side sealing parts 8b and 8b along the edge of the short side direction of the film encapsulation part 6. The steam releasing seal | sticker part 7, the strip | belt-shaped end sealing part 8a, and the strip | belt-shaped side sealing part 8b superimposed the opening side upper surface part 2a and the length side upper surface part 2b, and heat-sealed part. Thus, the steam releasing sealing portion 7, the strip-shaped end sealing portion 8a and the strip-shaped side sealing portion 8b are connected. In this embodiment, the strip | belt-shaped end sealing part 8a and the strip | belt-shaped side sealing part 8b are named generically, and are demonstrated as strip | belt-shaped sealing part 8a, 8b.

The film encapsulation portion 6 has an unsealed portion 9 on the outside of the vapor releasing seal portion 7. The unsealed portion 9 is formed by overlapping and heat sealing the opening upper surface portion 2a and the length upper surface portion 2b, the end sealing portions 8a and 8a, the side sealing portion 8b and the vapor releasing sealing portion 7 It is the part which is not heat-sealed by the outside surrounded by). The unsealed portion 9 has a polygonal unsealed portion 9a formed along the vapor releasing seal portion 7 and a band-shaped unsealed portion 9b connected to the polygonal unsealed portion 9a. The strip | belt-shaped unsealed part 9b is formed along the strip | belt-shaped end sealing part 8a. In addition, the strip | belt-shaped unsealed part 9b does not necessarily need to be formed.

As shown in FIG. 2, the vapor releasing seal | sticker part 7 is formed in the shape which protruded by bent substantially in V shape toward the inner side of the packaging bag 100, and is substantially V-shaped of the steam releasing seal | sticker part 7 The starting points 71 and 71 of starting point 2 are connected with the strip-shaped end sealing part 8a. The substantially V-shaped tip 70 of the vapor releasing seal | sticker part 7 is located in the bag inner direction rather than the line which connected the starting points 71 and 71 comrades. The steam releasing seal | sticker part 7 of this embodiment is comprised in the inner direction part of the packaging bag 100 rather than the line which connected two starting points 71 and 71 comrades.

Further, the polygonal unsealed portion 9a constituting the unsealed portion 9 has a protruding shape line 9a1 along the substantially V-shape of the vapor releasing sealing part 7 and an end portion 91 of the protruding shape line 9a1. , 91, and two connecting lines 9a2 and 9a2 for connecting the strip-shaped unsealed portion 9b and an underline 9a3 for connecting the ends 92 and 92 of the two connecting lines 9a2 and 9a2. It consists of an area partitioned by). The tip 90 of the protruding shape line 9a1 of the polygonal unsealed portion 9a is located in the bag inward direction than the line connecting the two ends 91 and 91 commencing the protruding shape line 9a1. .

As shown in FIG. 2, the steam releasing sealing part 7 of this embodiment has the inner curved shape 7a1 which protruded in the V shape of the inner side of the packaging bag 100 which is not adjacent to the unsealing part 9, and It is formed by heat sealing which has the outer side curved shape (equivalent to the protrusion shape line 9a1 and the connection line 9a2) of the outer side of the packaging bag 100 adjacent to the sealing part 9, and forms at least V shape. Between the starting points 71 and 71 of two points to start, the width | variety of a seal differs in a front end part and other parts, and the tip 70 side of the steam releasing sealing part 7 becomes narrow. Therefore, when the internal pressure of the packaging bag 100 rises and the packaging bag 100 expands, only the tip 70 side of the vapor releasing sealing portion 7 is peeled off and opened, and the opened area and the unsealed portion 9 (Particularly, polygonal unsealed portion 9a), a vapor discharge portion for discharging water vapor or the like in the packaging bag 100 is formed. Then, water vapor and the like in the packaging bag 100 are discharged to the outside from the vapor discharge portion. As a result, the internal pressure of the packaging bag 100 increases, so that even if the packaging bag 100 expands, water vapor and the like in the packaging bag 100 are released from the vapor discharge part to the outside so that the packaging bag 100 does not burst. Can be.

As shown in Fig. 3 (b), the vapor discharge portion has a region and a polygonal opening that open from the tip 70 of the vapor releasing seal portion 7 to a line connecting the ends 91 and 91 of the protruding shape line 9a1 with each other. It is formed of the sealing portion 9a.

Since the film encapsulation part 6 is provided in the upper surface part 2, the steam releasing sealing part 7 which forms a vapor discharge | release part becomes a position higher than the upper surface of the content D in the packaging bag 100. As shown in FIG. Moreover, it is preferable that the film encapsulation part 6 is provided from the center to the outer side in the packaging bag long side direction. As a result, the pressure tends to be concentrated by the steam releasing seal portion 7 when the internal pressure rises due to steam, thereby improving the opening property. In addition, notches 11 and 11 for opening the packaging bag 100 after heating and pressurized cooking in the vicinity of the film encapsulation part 6 side of the side seals 3 and 3, preferably inside the film encapsulation part 6. Is installed. The packaging bag 100 of this embodiment opens the packaging bag 100 from the notches 11 and 11, and takes out the content D from the packaging bag 100. FIG.

When the sealed packaging bag 100 shown in FIG. 1 (b) is heated in a microwave oven, water vapor or the like is generated in the packaging bag 100, and the packaging bag 100 expands due to high temperature and high pressure. Then, as shown in FIG. 3 (a), the vertical section of the main body portion of the packaging bag 100 constituted by the lower surface portion 1 and the upper surface portion 2 expands to have a circular shape, and at the same time, vapor of the film encapsulation portion 6 The space partitioned by the subtraction seal | sticker part 7, the strip | belt-shaped end sealing part 8a, and the strip | belt-shaped side sealing part 8b expands. As a result, a force is intensively applied to the tip 70 portion of the vapor releasing seal portion 7 constituting the film encapsulation portion 6, and as shown in FIG. 3B, the tip of the vapor releasing seal portion 7 ( The peeling of the heat seal occurs from 70, and the opening from the tip 70 of the vapor releasing seal 7 to the line connecting the ends 91 and 91 of the protruding shape line 9a1 is opened. The region and the unsealed portion 9 (polygonal unsealed portion 9a, strip-shaped unsealed portion 9b) form a vapor discharge portion for releasing water vapor and the like in the packaging bag 100. As a result, water vapor or the like generated in the packaging bag 100 can be discharged from the vapor discharge portion to the outside. In addition, when releasing water vapor or the like in the packaging bag 100 to the outside, a beeping sound may be generated to soundly indicate that the packaging bag 100 is opened. As a result, even when the packaging bag 100 is heated and pressurized in a microwave oven, the packing bag 100 can be grasped by a sound even when the user leaves the microwave oven or performs other tasks. It is possible to prevent the 100 from seeing the opening and passing it through.

When the packaging bag 100 of this embodiment heats and expands in a microwave oven, as shown in FIG. 4, the edge parts 91 and 91 of the protruding shape line 9a1 from the front-end | tip 70 of the steam releasing seal | sticker part 7 comrades, And the area from the position where the ends 91 and 91 were connected to the line which connected the opening, and the area | region from the position which connected the starting point 71 and 71 of two points which start V shape to form the sealing part is formed. Then, the edge part 7a which protrudes in the bag inner side from the strip | belt-shaped end sealing part 8a is formed. That is, in the packaging bag 100 of this embodiment, when the steam releasing seal | sticker part 7 peels, other parts other than the tip part which comprise the steam releasing seal | sticker part 7 are connected with the strip | belt-shaped end sealing part 8a. And remain | surviving, the edge part 7a which protrudes inwardly from the strip | belt-shaped end sealing part 8a in the remaining part is formed. In addition, a cylindrical vapor outlet is formed between the edge portions 7a.

In the packaging bag 100 of this embodiment, since the edge part 7a which protrudes inwardly from the strip | belt-shaped end sealing part 8a is formed, the steam in the packaging bag 100 is external from a cylindrical steam outlet. Part of the steam hits the edge portion 7a when discharged to the outside of the packaging bag 100. As the steam hits the edge portion 7a, the flow of steam changes and the internal pressure of the cylindrical steam outlet changes periodically, and the continuous movement of the vertical pressure generates vortex and vibrates by the vortex. It is thought to generate sound. In other words, as shown in Fig. 4, the steam hits the edge portion 7a, causing the flow of steam to fluctuate. Vortex is generated by the fluctuation of the vapor flow, and vibration is generated by the vortex to generate sound. As a result, when the water vapor or the like in the packaging bag 100 is discharged to the outside from the cylindrical steam outlet, it is possible to generate a "beep" flute sound.

On the other hand, even when the conventional packaging bag is heated and expanded in a microwave oven, the vaporized gas is released without forming the edge portion 7a protruding inwardly from the belt-shaped end sealing portion 8a as shown in FIG. At the time of peeling, it peels at once to two starting points 71 and 71 which start the V shape, and releases steam to maintain the pressure in an equilibrium state. For this reason, some steam does not collide with the edge part 7a when the vapor | steam inside a packaging bag is discharged | emitted outside, and a sound is not produced in many cases.

On the other hand, when the packaging bag 100 of this embodiment expands by heating in a microwave oven, since the edge part 7a which protrudes inwardly from the strip | belt-shaped end sealing part 8a is formed as shown in FIG. When the steam in the bag 100 is discharged to the outside, some of the steam hit the edge portion 7a and vortex may be generated to generate sound. As a result, the packaging bag 100 may be notified by sound. Thus, the packaging bag 100 of this embodiment can form an edge part only by the structure by the sealing shape of the steam releasing sealing part 7, and can generate a sound.

Moreover, the packaging bag 100 of this embodiment has the strip | belt-shaped unsealed part 9b outside the strip | belt-shaped end sealing part 8a, and strip | belt-shaped unsealing when steam is discharged | emitted from a steam discharge port to the outside. Pass through portion 9b. Since the strip | belt-shaped unsealed part 9b is comprised in the state in which the films are unsealed, the film which comprises the strip | belt-shaped unsealed part 9b vibrates when steam passes through the strip | belt-shaped unsealed part 9b. To generate a vibration sound.

In addition, the packaging bag 100 of the present embodiment is installed in the film encapsulation portion 6, which is positioned above the upper surface level of the contents D in the packaging bag 100, to form a vapor releasing sealing portion 7 that forms a vapor discharge portion. Since it is possible to prevent boiling of the contents D in the packaging bag 100, leakage of the contents D in the packaging bag 100 can be prevented.

In addition, the expansion of the space partitioned by the vapor releasing sealing portion 7, the strip-shaped end sealing portion 8a, and the strip-shaped side sealing portion 8b of the film encapsulation portion 6 is caused by the lower surface portion 1 and the upper surface portion. The bag-shaped end sealing part 8a and the edge part 7a which are superimposed on the expansion of the main body part of the packaging bag 100 which consists of (2), and the steam releasing sealing part 7 (see FIG. 4). The partitioned space is symmetrically swollen at the starting points 71 and 71 of the vapor releasing seal portion 7 because it remains without being peeled off, and this constitutes two films (openings) constituting the film encapsulation portion 6. The unsealed part 9 (9a, 9a, 9) which acts as a stress that both sides of the center part of the side upper surface part 2a and the length side upper surface part 2b tries to rise, and comprises a vapor discharge | release part as shown in FIG.3 (c). 9b)} is opened to release water vapor generated in the packaging bag 100 to the outside. Because of this, even if a large amount of the content (D) in the packaging bag 100, the unsealed portion (9) constituting the vapor discharge portion that discharges the high-pressure steam is large enough to be secured in a high position to prevent boiling of the contents (D) can do.

Moreover, the polygonal unsealed part 9a which comprises the vapor discharge | release part is the protrusion shape line 9a1 along the substantially V-shape of the vapor releasing seal | sticker part 7, and the edge part of the protrusion shape line 9a1 as shown in FIG. Two connecting wires 9a2 and 9a2 for connecting to 91 and 91 and also for connecting the strip-shaped unsealed portion 9b and an underline connecting the ends 92 and 92 of the two connecting lines 9a2 and 9a2. Since it consists of the area | region partitioned by (9a3), and defines the opening area | region ((alpha) 1, alpha2 shown in FIG. 5) of a vapor discharge | release part, the discharge amount per unit time, such as water vapor | steam to discharge | emit outside, can be controlled.

For example, as shown to Fig.5 (a), when the opening area (alpha) 1 which connected the edge part 91,91 of the protrusion shape line 9a1 is long, ie, the length of the part whose narrow sealing width is large is large. In the case where the release amount per unit time such as water vapor to be discharged to the outside becomes large, as shown in Fig. 5B, the opening region α2 connecting the ends 91 and 91 of the protruding shape line 9a1 is short. The amount of emission per unit time such as water vapor emitted to the outside becomes small.

Moreover, in the packaging bag 100 of this embodiment, the protruding shape line 9a1 which comprises the front end 90 side of the polygonal unsealed part 9a comprises the front end 70 side of the vapor releasing sealing part 7. It is prescribed | regulated previously so that it may become smaller than the sealing width of the other part in substantially the same shape as the inner curved shape 7a1. And the position of the edge part 91,91 of the protrusion shape line 9a1 is located in the inside of the packaging bag 100 at least rather than the line which connected the starting point 71, 71 of the steam releasing sealing part 7 with each other. Thereby, the packaging bag 100 is heated in a microwave oven, and the packaging bag 100 expands, and end portions 91 and 91 of the protruding shape lines 9a1 are separated from the tip 70 of the vapor releasing sealing portion 7. Can be opened to form the opening regions α1 and α2. More specifically, the sealing widths β1 and β2 shown in FIGS. 5A and 5B are widths in a direction parallel to the direction of the stress applied to the vapor releasing sealing portion 7. As shown in FIG. 5, the steam releasing seal | sticker part 7 of this embodiment has the sealing width (beta) 1 of the area | region clamped between the inner side curved shape 7a1 and the 1st outer side curved shape (corresponding to protrusion shape line 9a1). It becomes narrower than the sealing width (beta) 2 of the area | region clamped between this inner side curved shape 7a1 and 2nd outer side curved shape (corresponding to connection line 9a2). For this reason, when steam generate | occur | produces and the pressure was concentrated in the steam releasing seal | sticker part 7, only the sealing width (beta) 1 part peels and it can suppress the amount of discharge | emission per unit time, such as the water vapor generated in the packaging bag 100 ,. In addition, only the sealing width β1 portion is peeled off and the sealing width β2 portion is connected to the band-shaped end sealing portion 8a and remains. From the remaining portion, the sealing width β1 portion is removed from the band-shaped end sealing portion 8a. An edge portion 7a (see Fig. 4A) that protrudes inwardly is formed. For this reason, when the steam in the packaging bag 100 is discharged to the outside, some of the steam hits the edge portion 7a and vortex may be generated to generate sound.

In addition, in the packaging bag 100 after the opening of this embodiment, when the opening side is faced downward by making the connecting line 9a2 parallel, the opening part of the steam releasing seal | sticker part 7 is closed, and the content D is leaked. It can function as a safety valve to prevent. As a result, the packaging bag 100 after heating and pressure cooking can be safely taken out of the microwave oven.

In addition, in the packaging bag 100 of this embodiment, the underlined 9a3 was provided conveniently for demonstrating the shape of the polygonal unsealed part 9a, and is not provided in the actual packaging bag 100. FIG. Moreover, in the packaging bag 100 of this embodiment, the polygonal unsealed part 9a and the strip | belt-shaped unsealed part 9b are not partitioned by the underline 9a3, but are integrated, and the underline 9a3 is steam, etc. It is a part constituting the discharge port for emitting the outside.

<Operation and Effects of the Packaging Bag 100 of the Present Embodiment>

Thus, as shown in FIG. 2, the packaging bag 100 of this embodiment curved the V-shape toward the inner side of the packaging bag 100, and the steam releasing sealing part 7 which protruded, and the steam releasing sealing part ( 7) has an unsealed portion {9 (9a, 9b)} formed adjacent to the vapor releasing sealing portion 7 without being sealed, and the internal pressure of the packaging bag 100 rises, thus packing bag 100 Is expanded, the steam releasing seal | sticker part 7 opens as shown in FIG.3 (b), and the vapor | steam etc. in the packaging bag 100 are opened with the open area | region and the unsealing part {9 (9a, 9b)}. To form a vapor outlet. The steam releasing sealing part 7 which forms the vapor discharge | release part of this embodiment is the inner side curved shape 7a1 of the inner side of the packaging bag 100 which is not adjacent to the unsealing part 9, and the unsealing part 9 Is formed by heat-sealing to have outer curved shapes 9a1 and 9a2 on the outer side of the packaging bag 100 adjacent to and the two starting points 71 and 71 that start the V-shape. The inner side of the packaging bag 100 is formed from the line. Moreover, the width | variety (beta) 1 and (beta) 2 of the heat-sealed area | region of the steam releasing seal | sticker part 7 is narrow in the front end 70 side of the steam releasing seal | sticker part 7 ((beta) << 2).

For this reason, when the packaging bag 100 of this embodiment expands by heating in a microwave oven, as shown in FIG. 4, the tip part which comprises the vapor releasing seal | sticker part 7 peels, and other parts other than a tip part are strip | belt-shaped. The edge portion 7a protruding inwardly from the band-shaped end sealing portion 8a is formed at the remaining portion connected to the end sealing portion 8a. In addition, a cylindrical vapor outlet is formed between the edge portions 7a. As a result, when the water vapor or the like in the packaging bag 100 is discharged to the outside from the cylindrical steam outlet, it is possible to generate a "beep" flute sound. In addition, the sound can be generated only by the sealing shape of the vapor releasing sealing unit 7.

In addition, the packaging bag 100 of this embodiment predetermines the position of the edge part 91,91 of the protrusion shape line 9a1, without changing the shape of the inner side curved shape 7a1 of the steam releasing seal | sticker part 7. By changing on the protruding shape line 9a1, as shown in FIG. 5, the opening area (alpha) which connected the edge parts 91 and 91 can be changed, and the emission amount per unit time, such as water vapor discharged | emitted outside, can be controlled. For this reason, stress concentration by vapor can be effectively performed, and opening area (alpha) can be controlled without rupturing the packaging bag 100, and cooking can be performed with an appropriate stress.

In addition, the two connection lines 9a2 constituting the polygonal unsealed portion 9a of the packaging bag 100 of the present embodiment described above have a width and a bottom line (a) of the opening area α connecting the ends 91 and 91 with each other. The width (width between the connecting lines 9a2) of 9a3) is comprised so that it may become the same. However, the two connecting lines 9a2 may be configured so that the width of the base line 9a3 (the width between the connecting lines 9a2) is narrower than the width of the opening region α connecting the ends 91 and 91 to each other. . Thereby, since the discharge port which discharges the water vapor etc. which generate | occur | produced in the packaging bag 100 to the outside can be narrowed, the pressure in the packaging bag 100 can be raised.

In addition, as shown in FIG. 2, the protrusion shape line 9a1 which comprises the front end 90 side of the polygonal unsealed part 9a of the packaging bag 100 of this embodiment mentioned above has the The sealing width β1 of the vapor releasing sealing part 7 is made constant so that it may be comprised in the same shape as the inner curved shape 7a1 which comprises the front-end | tip 70 side. However, if the fluctuation amount of the sealing width β1 of the vapor releasing sealing portion 7 is within a predetermined range, the protruding shape line 9a1 of the polygonal unsealing portion 9a is the inside curved shape 7a1 of the vapor releasing sealing portion 7. It is not necessary to comprise the same shape as, and it is also possible to comprise substantially the same shape as the inside curved shape 7a1 of the steam releasing sealing part 7. As shown in FIG. In addition, the substantially same shape means including the shape slightly different from the inside curved shape 7a1.

(Example 2 of 1st Embodiment)

Next, Example 2 of the first embodiment will be described.

The strip | belt-shaped end sealing part 80a of Example 2 of 1st Embodiment is comprised in taper shape as shown in FIG. 6, and the film encapsulation part 6 is formed from the starting point 71 of the vapor releasing sealing part 7. The width gamma of the strip-shaped end sealing portion 80a is made wider toward the end portion in the long side direction of (gamma 1 <gamma 2).

In this case, when the space formed by partitioning into the vapor releasing sealing portion 7, the strip-shaped end sealing portion 80a and the strip-shaped side sealing portion 8b of the film encapsulation portion 6 is expanded, the first embodiment is expanded. A force can be applied locally to the tip 70 portion of the vapor releasing seal portion 7 than in Example 1. As a result, the vapor releasing seal | sticker part 7 can be peeled more easily than Example 1 of 1st Embodiment.

Further, since the width γ of the strip-shaped end sealing portion 80a is widened from the starting point 71 of the vapor releasing sealing portion 7 toward the end portion in the long side direction of the film encapsulation portion 6, the steam The flow fluctuates more than the shape shown in Fig. 2, and vortices are likely to occur, making it easy to generate sound. In addition, when the vapor discharge portion is formed, water vapor and the like in the packaging bag 100 tend to collect at the vapor discharge portion, so that sound can be easily generated. As a result, the opening of the packaging bag 100 can be informed more effectively than Example 1 of the first embodiment.

In addition, since the packing bag 100 of this embodiment comprises the tapered end sealing part 80a in taper shape, there are more heat sealing areas of the strip | belt-shaped end sealing part 80a than Example 1 of 1st Embodiment. I lose it. For this reason, the non-sealing part 80b is comprised in the area | region in which the strip | belt-shaped end sealing part 80a is formed. Thereby, since the bubble, wrinkles, etc. which generate | occur | produce in the area | region of the strip | belt-shaped end sealing part 80a at the time of heat-sealing the strip | belt-shaped end sealing part 80a can be suppressed, stable sealing strength can be maintained.

<Operation and Effects of the Packaging Bag 100 of the Present Embodiment>

As described above, in the packaging bag 100 of the present embodiment, the width γ of the strip-shaped end sealing portion 80a connected to both ends of the vapor releasing sealing portion 7 is the starting point of both ends of the steam releasing sealing portion 7. The taper widens from the positions of 71 and 71 toward the side of the packaging bag 100 to constitute (γ1 <γ2). Thereby, a force can be locally applied to the tip 70 part of the steam releasing seal | sticker part 7 than Example 1 of 1st Embodiment. In addition, the vapor releasing seal portion 7 can be more easily peeled than in Example 1 of the first embodiment, and the sound can be easily generated.

Moreover, since the non-sealing part 80b is provided in the area | region of the strip | belt-shaped end sealing part 80a, the bubble generated in the area | region of the strip | belt-shaped end sealing part 80a is absorbed by the non-sealing part 80b, and Since wrinkles etc. can be suppressed, stable sealing strength can be maintained.

In addition, the band-shaped end sealing part 80a of this embodiment mentioned above has the width (gamma) toward the side part of the packaging bag 100 from the position of the starting point 71, 71 of both ends of the steam releasing sealing part 7. When the taper is widened and configured (γ1 &lt; γ2), the shape of the strip-shaped end sealing portion 80a is not limited to the shape shown in Fig. 6 and can be configured in any shape. For example, although the strip-shaped end sealing part 80a was comprised in linear form in FIG. 6, it can also be comprised including a curve in part.

(Example 3 of 1st Embodiment)

Next, Example 3 of the first embodiment will be described.

The steam releasing seal | sticker part 7 of Example 3 of 1st Embodiment is a fixed width | variety of the area | region pinched | interposed between the inner side curved shape 7a1 and the 2nd outer side curved shape 9a2, for example, as shown to FIG. 7 (a). And a sealing width β1 having a predetermined width of the region sandwiched between the sealing width β2 and the inner curved shape 7a1 and the first outer curved shape 9a1, and the sealing width is larger than the sealing width β2. (β1) is configured to be narrowed. In the case of the shape of FIG. 7A, the width β1 of the region sandwiched between the inner curved shape 7a1 and the first outer curved shape 9a1 is the same as in Example 1 and Example 2 of the first embodiment described above. ) Is narrower than the width β2 of the region sandwiched between the inner curved shape 7a1 and the second outer curved shape 9a2, so that the tip end portion constituting the vapor releasing sealing part 7 when heated and expanded in a microwave oven. Only the narrowed portion of β1 is peeled off, and other portions β2 other than the tip portion β1 are connected to the band-shaped end sealing portion 8a and remain, so that the remaining portion β2 Since the edge part which protrudes inwardly from the strip | belt-shaped end sealing part 8a is formed, when a vapor | steam etc. in the packaging bag 100 are discharged | emitted to the outside, a beeping sound can be generated.

In addition, the vapor releasing seal | sticker part 7 of Example 3 of 1st Embodiment comprises the outer curved shape 9a2 by one curved shape 9a2, and shows the inner curved shape 7a1 as shown in FIG.7 (b). And the sealing widths β1 and β2 of the region sandwiched between the outer curved shape 9a2 are configured to narrow toward the tip of the vapor releasing sealing portion 7. As a result, the sealing widths β1 and β2 of the region sandwiched between the inner curved shape 7a1 and the outer curved shape 9a2 can be sequentially narrowed toward the distal end of the vapor releasing sealing portion 7. Also in the case of the shape shown to this FIG. 7 (b), similarly to Example 1 and Example 2 of 1st Embodiment mentioned above, between the inside curved shape 7a1 and the outer curved shape 9a2 of the steam releasing sealing part 7 Since the widths β1 and β2 of the region sandwiched between them are narrow toward the distal end of the steam releasing sealing portion 7, when heated and expanded in a microwave oven, the portion constituting the steam releasing sealing portion 7 is peeled off. Since the remaining steam releasing sealing portion 7 is connected to the strip-shaped end sealing portion 8a to form an edge portion, a sound of beeping is generated when releasing water vapor or the like in the packaging bag 100 to the outside. You can.

In addition, the steam releasing seal | sticker part 7 of Example 3 of 1st Embodiment is steam squeezed out between at least the inner side curved shape 7a1 and the 1st outer side curved shape 9a1, for example, as shown to FIG. 7 (c). The sealing width β1 of the tip region of the sealing portion 7 is configured to be narrower than the other sealing width β2. Further, the second outer curved shape 9a2 is constituted by a plurality of straight lines, and in the center of the polygonal unsealed part 9a, a vapor convection part, which is a broad area of a substantially rectangular shape, is formed, and the top and bottom of the polygonal unsealed part 9a is formed. The narrow area is narrower than the wide area in the center. In the case of the shape of FIG. 7C, the width β1 of the region sandwiched between the inner curved shape 7a1 and the first outer curved shape 9a1 is the same as that of Examples 1 and 2 of the first embodiment described above. ) Is narrower than the width β2 of the other region, and when heated and expanded in a microwave oven, the tip portion β1 constituting the vapor releasing sealing portion 7 is peeled off, and other portions β2 other than the tip portion β1 are separated. ) Is connected to the strip-shaped end sealing portion 8a and remains, so that the edge portion protruding inwardly from the strip-shaped end sealing portion 8a is formed at the remaining portion β2. In addition, in the case of the shape shown in FIG.7 (c), the vapor convection part which is a wide area | region of a substantially rectangular shape is comprised in the center of the polygonal unsealed part 9a, and the center width | variety is provided on the top and bottom of the polygonal unsealed part 9a. Since the tip portion β1 constituting the vapor releasing sealing portion 7 is peeled off and the steam is discharged to the outside from the polygonal unsealing portion 9a, as shown in FIG. Likewise, vortices are generated on both sides of the vapor convection portion, which is a wide region of the polygonal unsealed portion 9a. As a result, it is possible to generate a "beep" flute sound by the vortices generated on both sides of the wide area of the polygonal unsealed portion 9a. In addition, the shape of the vapor convection portion does not necessarily need to be formed in a straight line, but may be formed as a wide non-sealing portion at the center with a non-sealing portion that is narrow at the top and bottom, for example, in a curved shape or the like.

<Operation and Effects of the Packaging Bag 100 of the Present Embodiment>

Thus, the steam releasing seal | sticker part 7 of the packaging bag 100 of this embodiment is constant of the area | region pinched | interposed between the inner side curved shape 7a1 and the 2nd outer side curved shape 9a2, as shown to FIG. 7 (a). It has a sealing width (beta) 2 which has a width, and the sealing width (beta) 1 which has a fixed width of the area | region pinched | interposed between the inner side curved shape 7a1 and the 1st outer side curved shape 9a1, and is more than the sealing width (beta) 2. It is comprised so that sealing width (beta) 1 may become narrow. As shown in FIG. 7B, the sealing widths β1 and β2 of the region sandwiched between the inner curved shape 7a1 and the outer curved shape 9a2 are narrowed toward the tip of the vapor releasing sealing portion 7. do. As shown in Fig. 7 (c), the sealing widths β1 and β2 of the region sandwiched between the inner curved shape 7a1 and the outer curved shapes 9a1 and 9a2 are different, and the sealing width of the tip portion β1 is different. Is configured to be narrower than other portions β2.

As a result, when heated and expanded in a microwave oven, the tip portion β1 constituting the vapor releasing sealing portion 7 is peeled off, and the other portion β2 other than the tip portion β1 is formed in a band-shaped end sealing portion 8a. The edge portion protruding inwardly from the band-shaped end sealing portion 8a is formed at the remaining portion β2 of the remaining portion. A beeping sound can be generated.

(Example)

Next, the Example of embodiment mentioned above is demonstrated, referring FIG. 9, FIG. However, the following example is an example and the technical idea of this embodiment is not limited only to a following example. FIG. 9 shows a structural example before and after peeling off the steam releasing sealing portion of the packaging bags of Examples 1 to 5 described below, and FIG. 10 shows a structural example before and after peeling off the steam releasing sealing portion of the packaging bags of Comparative Examples 1 to 2. FIG. Indicates. 9 and 10 show the state before and after peeling off the steam releasing seal | sticker part, and the part peeled in the sealing part of the steam releasing seal | sticker part is shown by the dotted line.

The outer layer was sealed using a laminated film made of 15 µm nylon and the inner layer was made of linear low density polyethylene 60 µm and sealed with a seal bar to form a packaging bag having an opening 4 on one side as shown in Fig. 1 (a). It was. After packing the molded packaging bag with the water-containing cloth, the opening 4 is sealed and the packaging bag having the vapor releasing sealing part 7 in the film encapsulation part 6 as shown in Fig. 1 (b). Produced. For each of the packaging bag samples, a test was performed for the sealing shape after steam bleed and the occurrence of a "beep" flute sound when each sample was heated and cooked in a microwave oven.

(Example 1)

The packing bag of Example 1 was comprised as the vapor | steam releasing sealing part 7 so that it might protrude substantially V shape, and only the sealing width of the front end might become narrow, as shown before peeling of FIG. 9 (a).

After heating and cooking in a microwave oven, as shown after peeling in Fig. 9 (b), a “beep” flute sound is generated in 15 of the 20 samples, and the edge portion protruding inwardly from the band-shaped end sealing portion is generated. It was formed.

(Example 2)

The packaging bag of Example 2 comprised the strip | belt-shaped end sealing part in taper shape, as shown before peeling of FIG.9 (c). The other structure is the same as Example 1 shown before FIG. 9 (a) peeling.

After heating and cooking in a microwave oven, when the pressure in the packaging bag is increased and the packaging bag expands, as shown after peeling in Fig. 9 (d), a beeping sound is generated in 18 out of 20 samples, and a band-like sound is generated. An edge portion protruding inwardly from the end sealing portion was formed.

(Example 3)

As shown before the peeling of FIG. 9 (e), the packaging bag of Example 3 has a narrow sealing width at the tip of the steam releasing sealing portion, and a passage (unsealing portion) through which the steam after the delamination passes through has a cylindrical shape. A pair of parallel linear outer side sealing parts was provided and it was comprised so that the unsealed part of the steam releasing sealing part outer side may become a groove base shape. The other configuration is the same as that of the second embodiment.

After heating and cooking in a microwave oven, a beeping sound is generated in 19 of 20 samples, and the edge portion protruding inwardly from the strip-shaped end sealing portion as shown after peeling in FIG. 9 (f) is shown. Formed.

(Example 4)

The packaging bag of Example 4 was comprised so that sealing width might become narrow gradually toward the front-end | tip of a steam releasing sealing part, as shown before peeling of FIG.9 (g). The other configuration is the same as that of the second embodiment.

After heating and cooking in a microwave oven, a beeping sound is generated in 14 of 20 samples, and as shown after peeling in Fig. 9 (h), the edge portion protruding inward from the band-shaped end sealing portion is shown. Formed.

(Example 5)

The packaging bag of Example 5 was comprised so that the sealing width might become narrow toward the front-end | tip of the steam releasing seal | sticker part 7, as shown before peeling of FIG. 9 (i). The vapor convection part which is a substantially rectangular wide area | region was formed in the path | route (center of a polygonal unsealed part) after peeling, and the narrower and narrower area | region was comprised more than the wide area of the center above and below a polygonal unsealed part. The other configuration is the same as that of the first embodiment.

After heating and cooking in a microwave oven, a beeping sound is generated in 20 of 20 samples, and as shown after peeling in Fig. 9 (j), the edge portion protruding inwardly from the band-shaped end sealing portion is shown. Formed.

(Comparative Example 1)

The sealing bag of the comparative example 1 made all the sealing width | variety of the steam releasing sealing part as shown before peeling of FIG. 10 (k). The other configuration is the same as that of the first embodiment.

After heating and cooking in a microwave oven, a "beep" flute sound is generated in six of the 20 samples, and no sound is produced from the strip-shaped end sealing portion as shown after peeling off in Fig. 10 (l). The edge part which protruded inwardly was not formed.

(Comparative Example 2)

As shown before the peeling of FIG. 10 (m), the sealing bag of the comparative example 2 made all the sealing widths of the steam releasing sealing part the same. In addition, a linear incision was performed so that steam was discharged from the incision to the outside of the unsealed portion of the laminated film surrounded by the belt-shaped end sealing portion and the vapor releasing sealing portion.

After heating and cooking in a microwave oven, a beeping sound is generated in three of the 20 samples, and no sound is generated from the band-shaped end sealing portion as shown after peeling off in Fig. 10 (n). No inwardly protruding edge portion was formed.

(Test result)

As is clear from the above test results, the packaging bags of Examples 1 to 5, in which the edge portions are formed when the vapor releasing sealing portion is peeled off, are produced in almost all samples when the "beep" beep sound is produced when heated and cooked in a microwave oven. It turned out. This is because when the vapor in the packaging bag is discharged to the outside, the steam hits the edge portion, causing the steam flow to fluctuate and generate a vortex to generate sound.

Moreover, it turned out that it is easy to generate | occur | produce a "beep" flute sound by forming a strip | belt-shaped end sealing part in taper shape like the packaging bag of Examples 2-4. This is because by forming the tapered end sealing portion in a tapered shape, the flow of steam is more varied than the shape shown in Example 1, making it easier to generate vortices and to easily generate sound. This is because when the vapor discharge portion for releasing steam to the outside is formed, water vapor or the like in the packaging bag is easily collected at the vapor discharge portion, so that sound can be easily generated.

In addition, as in the packaging bag of the fifth embodiment, a wide rectangular area is formed in the center of the polygonal unsealed portion in which the vapor discharge portion is formed, and steam convection is narrower than the wide area in the center above and below the polygonal unsealed portion. It was found that the sound of "beep" fluctuates reliably by constructing a part. This causes vortices to be generated on both sides of a wide area of the polygonal unsealed portion when the steam is discharged from the polygonal unsealed portion constituting the vapor discharge portion to the outside, thereby reliably generating a "beep" flute sound. Because it can.

In addition, the above-described embodiments and examples are suitable embodiments and examples of the present invention, and the various embodiments are not limited only to the above embodiments and examples, but various changes can be made without departing from the gist of the present invention. Implementation in the embodiment can be carried out.

For example, in the above-mentioned embodiment, the film encapsulation part 6 is provided in the packaging bag 100, and the vapor releasing sealing part 7 and the unsealing part 9 are provided in the edge of the film encapsulation part 6. Thus, a vapor discharge portion was formed at the edge of the film encapsulation portion 6. However, without installing the film encapsulation portion 6 in the packaging bag 100, the steam releasing sealing portion 7 and the unsealing at the edge of the packaging bag 100 composed of the lower surface portion 1 and the upper surface portion (2) It is also possible to form the vapor release portion at the edge of the packaging bag 100 by providing the portion 9. Also in this case, the same effects as in the above-described embodiment can be obtained. However, in the case of the packaging bag 100 in which the film encapsulation unit 6 is provided as in the above-described embodiment, the packaging bag 100 is heated in a microwave oven and the packaging bag 100 is shown in FIG. Expansion of the space partitioned by the vapor releasing sealing portion 7 of the film encapsulation portion 6, the strip-shaped end sealing portion 8a, and the strip-shaped side sealing portion 8b when the sheet expands. Since it is superimposed on the expansion of the main body part of the packaging bag 100 which consists of the upper surface part 2, the part of the film encapsulation part 6 becomes a location which is most easily expanded by steam etc. Therefore, as in the above-described embodiment, the vapor releasing sealing portion 7 and the unsealing portion 9 are formed at the edges of the film encapsulation portion 6 so as to form a vapor discharge portion, thereby generating in the packaging bag 100. The steam discharge part can be easily formed by easily peeling off the tip 70 of the vapor releasing sealing part 7 by steam or the like, and can easily generate sound. In addition, the amount of release per unit time such as water vapor generated in the packaging bag 100 can be effectively suppressed.

Further, the tip portion of the vapor releasing sealing portion 7 sandwiched between the inner curved shape 7a1 and the first outer curved shape 9a1 is narrowed in comparison with the other parts to give a preferential peeling. For example, it is not limited to the size of the sealing width, such as forming an easy peel through the easy-peel resin only at the tip part, but only the tip part is peeled off when the pressure by steam is applied due to weak peel strength of the tip part. If it is a form which can form the part 7a, it is applicable.

In addition, the shape of the vapor releasing seal | sticker part 7 is not limited to V shape, For example, circular arc shape etc. may be sufficient. In addition, the part with weak peeling strength in the steam releasing seal | sticker part 7 is not limited to the front-end | tip part of the steam releasing seal | sticker part 7 (middle position of both side strip | belt-shaped side sealing part 8a), for example, only to one side. You may form in the edge part etc. of the vapor releasing sealing part 7 in which the edge part is formed.

According to this invention, a sound can be produced with the simple structure of only the shape of the sealing part which forms and seals a film.

"2nd Embodiment"

This embodiment aims at suppressing sound by the improvement regarding the sound produced at the time of steam | emission.

The said patent documents 1, 3 are supposed to avoid the pressure rise inside a packaging bag by releasing the steam generate | occur | produced inside the packaging bag to the outside. For example, the said patent document 1 peels preferentially the steam releasing seal | sticker part, and discharge | releases steam from there. Moreover, the said patent document 3 dissipates steam to the outside from the steam passage easy means implemented in the sealing part.

However, the said patent documents 1, 3 may surprise a user by making a "beep" sound when releasing the steam generated inside the packaging bag to the outside.

Therefore, there is a need for the development of packaging bags that do not generate sound when steam generated inside the packaging bags is released to the outside.

This embodiment is made in view of the said situation, Comprising: It aims at providing the packaging bag which can suppress generation | occurrence | production of a sound when releasing the steam which generate | occur | produced inside the packaging bag to the outside.

<Summary of the packaging bag 200 of this embodiment>

First, the outline | summary of the packaging bag 200 in this embodiment is demonstrated, referring FIGS. 11-13.

The packaging bag 200 according to the present embodiment has an internal pressure of the packaging bag 200 and when the packaging bag 200 expands, the vapor releasing sealing portion 7 peels off and is opened. Part 9 (9a, 9b) is formed with a first vapor discharge portion 101 (see Fig. 13) for discharging the vapor in the packaging bag 200 to the outside. Moreover, the 2nd vapor | steam discharge | release part 102 is formed in the unsealed part 9 (polygonal unsealed part 9a in this embodiment).

For this reason, as shown in FIG. 13 (a), the packaging bag 200 of this embodiment collects the steam which generate | occur | produced in the packaging bag 200 from the 1st vapor discharge | release part 101 and the 2nd vapor discharge | release part 102 at least. It may be released to the outside to release the vapor to the outside in at least a two-dimensional direction. As a result, the generation of sound can be suppressed when the steam generated inside the packaging bag 200 is discharged to the outside.

Conventional packaging bags have a structure in which sound is easily generated because steam generated inside the packaging bags has been discharged to the outside in a one-dimensional direction. In contrast, the packaging bag 200 according to the present exemplary embodiment may discharge steam generated in the packaging bag 200 to the outside in at least a two-dimensional direction (the first steam discharge unit 101 and the second steam discharge unit 102). Therefore, the generation of sound can be suppressed. The packaging bag 200 of this embodiment is demonstrated in detail, referring an accompanying drawing below.

(2nd embodiment)

<Configuration example of the packaging bag 200>

First, the structural example of the packaging bag 200 of this embodiment is demonstrated, referring FIGS. 11-13. FIG. 11: is a figure which shows the structural example of the packaging bag 200 of this embodiment, FIG. 11 (a) is a perspective view of the packaging bag 200 before sealing the opening 4, and FIG. The perspective view of the packaging bag 200 which accommodated the content D in the bag 200, and heat-sealed the opening 4 is sealed. 12 is a configuration of the vapor releasing sealing portion 7 and the unsealing portion 9 (polygonal unsealing portion 9a, strip-shaped unsealing portion 9b) provided in the film encapsulation portion 6 shown in FIG. 1. It is a figure which shows an example. FIG. 13: shows the structural example of the packaging bag 200 which shows the expanded state by heating the packaging bag 200 shown to FIG. 1 (b) by a microwave oven, and FIG. 13 (a) is a side view of the packaging bag 200 FIG. 13B is a view showing a state in which the tip 70 of the vapor releasing sealing portion 7 is opened to form the first steam releasing portion 101.

The second vapor discharge unit 102 is formed in the polygonal unsealed unit 9a. The 2nd vapor | steam discharge | release part 102 is formed in at least one of the two films (opening side upper surface part 2a and the length side upper surface part 2b) which comprise the polygonal unsealing part 9a, FIG. As shown in a), water vapor etc. are discharged | emitted from the 2nd vapor discharge part 102 to the exterior in the direction different from the direction from which the water vapor etc. are discharged | emitted from the 1st vapor discharge part 101 to the exterior.

Thereby, the packaging bag 200 of this embodiment can discharge | release water vapor etc. in the packaging bag 200 to the outside in a two-dimensional direction. As a result, even if the internal pressure of the packaging bag 200 rises and the packaging bag 200 expands, at least the first vapor discharge unit 101 and the second steam discharge unit 102 may remove water vapor or the like in the packaging bag 200. Since it can be discharged into the packaging bag 200 can be prevented from bursting. In addition, it is possible to suppress the generation of sound when releasing water vapor or the like generated inside the packaging bag 200 to the outside.

In addition, the shape of the second vapor discharge portion 102 formed in the polygonal unsealed portion 9a is not particularly limited, and if it is possible to discharge water vapor and the like inside the packaging bag 200 to the outside, It is possible and formed by a punching process etc. For example, the second vapor discharge unit 102 can be configured by cuttings such as arcs, straight lines, V-shapes, and U-shapes, and cuttings of circles, triangles, squares, trapezoids, polygons, and the like. Moreover, since the quantity falling in the unit time of steam increases by setting it as polygonal shape or circular shape instead of linear shape, it is preferable. In addition, in this embodiment, although the 2nd vapor | steam discharge | release part 102 of the same shape is formed in both of the opening side upper surface part 2a and the length side upper surface part 2b which comprise the polygonal unsealed part 9a, It may be provided only in either the side upper surface part 2a or the length side upper surface part 2b, and can also form the 2nd vapor | steam discharge | release part 102 of a different shape, respectively.

In addition, in the packaging bag 200 of this embodiment, the connection line 9a20 was provided conveniently in order to demonstrate the shape of the polygonal unsealed part 9a, and is not provided in the actual packaging bag 200. FIG. Moreover, in the packaging bag 200 of this embodiment, the polygonal unsealed part 9a and the strip | belt-shaped unsealed part 9b are not partitioned by the connection line 9a20, but are integrated, and the connection line 9a20 is steam, etc. It is a part constituting the discharge port for emitting the outside.

<Operation and Effects of the Packaging Bag 200 of the Present Embodiment>

Thus, as shown in FIG. 12, the packaging bag 200 of this embodiment has the steam releasing seal | sticker part 7 which protruded in the curved shape toward the inner side of the packaging bag 200, and the steam releasing seal | sticker part 7 And an unsealed portion 9 (polygonal unsealed portion 9a, band-shaped unsealed portion 9b) formed adjacent to the outside of the steam releasing sealing portion 7 without sealing. When the internal pressure of the pressure rises and the packaging bag 200 expands, as shown in FIG. 13B, the vapor releasing sealing portion 7 is opened, and the opened region and the unsealing portion 9 (polygonal unsealing). The first vapor discharge portion 101 is formed by the portion 9a and the strip unsealed portion 9b. Moreover, the 2nd vapor | steam discharge | release part 102 is formed in the unsealed part 9 (polygonal unsealed part 9a in this embodiment).

The packaging bag 200 of the present embodiment emits water vapor or the like generated inside the packaging bag 200 from at least the first steam discharge unit 101 and the second steam discharge unit 102 to at least two-dimensional space. Can be emitted from the outside to the outside. As a result, a large amount of steam can be discharged to the outside, and the generation of sound can be suppressed when the steam or the like generated inside the packaging bag 200 is discharged to the outside.

Moreover, as shown in FIG. 12, the protruding shape line 9a10 which comprises the front end 90 side of the polygonal unsealed part 9a of the packaging bag 200 of the present embodiment mentioned above has the The sealing width of the vapor releasing seal | sticker part 7 is made constant in the same shape as the inside curved shape 7a1 which comprises the front end 70 side. However, if the fluctuation amount of the sealing width of the vapor releasing sealing portion 7 is within a predetermined range, the protruding shape line 9a10 of the polygonal unsealing portion 9a has the same shape as the inner curved shape 7a1 of the vapor releasing sealing portion 7. It is not necessary to configure this, and it can also be comprised in substantially the same shape as the inside curved shape 7a1 of the steam releasing sealing part 7. As shown in FIG. In addition, the substantially same shape means including the shape slightly different from the inside curved shape 7a1.

In addition, in the above-described embodiment, at least the vapor generated in the packaging bag 200 is discharged by discharging water vapor, etc. in the packaging bag 200 to the outside from at least the first steam discharging unit 101 and the second steam discharging unit 102. The structural example which discharge | releases to the exterior in the two-dimensional direction was demonstrated. However, the present invention is not limited to the two-dimensional direction, and a new vapor discharge part may be installed in the packaging bag 200 to release steam generated in the packaging bag 200 in the multi-dimensional direction.

"Third embodiment"

This embodiment is an improvement regarding the peelability of the vapor releasing seal portion.

In the packaging bags having the vapor releasing sealing portions of Patent Documents 1 and 4, stress is locally concentrated at corner portions formed by connecting the sealing portions at the time of pressure rise, and peeled off from unintended portions such as the corner portions. Problems such as leakage of contents and the like have occurred.

This embodiment is made | formed in view of the said situation, and an object of this invention is to provide the packaging bag which can suppress peeling from the unintentional part in the packaging bag which has a vapor releasing sealing part.

(Overview of packaging bag 300 according to the present invention)

The packaging bag 300 which concerns on this embodiment is demonstrated using FIG. The packaging bag 300 is a packaging bag 300 having a vapor releasing sealing portion 7, and a band-shaped first sealing portion 8a and a first sealing portion 8a connected to the steam releasing sealing portion 7. It is characterized in that the peeling strength of the sealing part (for example, part of 8b) of the edge part which the strip | belt-shaped 2nd sealing part 8b which cross | intersects and is comprised is highest.

The packaging bag 300 according to the present invention has the highest peel strength of the sealing portion of the corner portion where the stress is locally concentrated when the internal pressure of the packaging bag 300 rises, and thus, from the unintentional portion such as the corner portion thereof. Peeling can be suppressed. As a result, leakage of the contents D in the package 300 can be prevented. EMBODIMENT OF THE INVENTION Embodiment of the packaging bag 300 which concerns on this invention is described in detail, referring an accompanying drawing below.

(Example 1 of Third Embodiment)

<Configuration example of the packaging bag 300>

The peeling strength of the vapor releasing seal | sticker part 7 is weaker than the peeling strength of the heat-sealed part of the 1st sealing part 8a which connected with the steam releasing seal | sticker part 7a. Moreover, the peeling strength of the heat-sealed part of the 1st sealing part 8a becomes weaker than the peeling strength of the heat-sealed part of the 2nd sealing part 8b which cross | intersects the 1st sealing part 8a.

That is, the peeling strength of each part 7, 8a, 8b heat-sealed in the film bonding part 6 is comprised so that the following conditions (1) may be satisfied.

Condition (1)

Peeling strength of the vapor releasing sealing portion 7 Peeling strength of the first sealing portion 8a <Peeling strength of the second sealing portion 8b

Since the packaging bag 300 of this embodiment is comprised so that the said condition (1) may be satisfy | filled, peeling strength of the sealing part of the edge part which the 1st sealing part 8a and the 2nd sealing part 8b connect and comprise is comprised. It can be the highest. For this reason, when the internal pressure of the packaging bag 300 rises and the packaging bag 300 expands, steam can remain and it cannot be peeled off from the sealing part of the edge part which is easy to raise stress. As a result, the packaging bag 300 is prevented from being peeled off from the unintentional portion when it is expanded, and is peeled off from the tip 70 side of the vapor releasing sealing portion 7 to facilitate the first vapor discharge portion 101. It is possible to reliably prevent leakage of the contents D from unintended locations.

In addition, the peeling strength of each part 7, 8a, 8b heat-sealed in the film mounting part 6 can comprise the film mounting part 6 by arbitrary structures, if it is possible to satisfy said condition (1). It is possible. As a method of making the peeling strength of each part 7, 8a, 8b different, the method of making heat, pressure, sealing width, etc. at the time of heat sealing differ, for example is mentioned.

By making at least one of heat | fever, pressure, sealing width, etc. at the time of heat sealing differ, peeling strength of each heat-sealed part 7, 8a, 8b can be made different. For example, peeling strength can be weakened by reducing heat and pressure at the time of heat sealing. On the contrary, peeling strength can be strengthened by increasing the heat and pressure at the time of heat-sealing. Moreover, peeling strength can be weakened by shortening the sealing width of the sealing part. On the contrary, peeling strength can be strengthened by lengthening sealing width.

For example, as shown in FIG. 14, FIG. 15, a printing layer is formed by printing to a part of opening side upper surface part 2a and length side upper surface part 2b which form the film encapsulation part 6, By heat-sealing by varying the layer thicknesses of the portions 7, 8a, and 8b forming the vapor releasing sealing portion 7, the first sealing portion 8a, and the second sealing portion 8b, It is also possible to make the peeling strength of each formed part 7, 8a, 8b different. FIG. 14: shows the structural example of the film mounting part 6 formed by heat-sealing the opening side upper surface part 2a and the length side upper surface part 2b which formed the printing layer, and FIG. The figure which shows the laminated constitution example in each part 7, 8a, 8b which comprises the part 6, FIG. 15 (a) shows the film encapsulation part 6 shown in FIG. The laminated constitution example in the cut | disconnected 2nd sealing part 8b is shown, and FIG. 15 (b) shows the 1st sealing part 8a which cut | disconnected the film encapsulation part 6 shown in FIG. Fig. 15 (c) is a diagram showing an example of the layer structure in the vapor releasing seal portion 7 in which the film encapsulation portion 6 shown in Fig. 14 is cut along the line C-C '. to be.

For example, as shown in FIG.15 (c), two printing layers 2b2 and 2b3 are formed in the part which forms the vapor releasing sealing part 7 in the longitudinal side upper surface part 2b, and FIG. As shown in b), the one-layer printing layer 2b2 is formed in the part which forms the 1st sealing part 8a, and the part which forms the 2nd sealing part 8b as shown in FIG.15 (a). The printing layer is not formed in the layer, and the layer thicknesses of the parts 7, 8a, and 8b are different. As shown in Fig. 15 (c), two layers of printed layers 2a2 and 2a3 are formed at the portion of the opening side upper surface portion 2a which forms the vapor releasing sealing portion 7, and Fig. 15 (b). As shown in FIG. 15, a printing layer 2a2 of one layer is formed in the part which forms the 1st sealing part 8a, and it prints in the part which forms the 2nd sealing part 8b as shown in FIG.15 (a). No layer is formed, so that the layer thicknesses of the respective portions 7, 8a, 8b are different. And the longitudinal side upper surface part 2b and the opening side upper surface part 2a are piled up and heat-sealed, and the film encapsulation part 6 shown in FIG. 14 is formed. Thereby, since the layer thickness of each part 7, 8a, 8b which comprises the film encapsulation part 6 differs, peeling strength of the heat-sealed part can be made to satisfy said condition (1). In addition, the printing layers 2b2 and 2a2 formed in the portion forming the vapor releasing sealing portion 7 or the portion forming the first sealing portion 8a form the second sealing portion 8b as shown in FIG. It is preferable not to form in the part to make, and to separate from the part which forms the 2nd sealing part 8b. For this reason, the printing layers 2b2 and 2a2 are formed in the range shorter than the distance clamped between the 2nd sealing parts 8b and 8b which comprise the both ends of the film encapsulation part 6, as shown in FIG. Thereby, even if the formation positions of the printing layers 2b2 and 2a2 are shifted, since the printing layers 2b2 and 2a2 are not formed in the part which forms the 2nd sealing part 8b, the 1st sealing part ( The peeling strength of the sealing part of the corner part which 8a) and the 2nd sealing part 8b connect and comprise can be made highest. Further, since the printed layers 2b2 and 2a2 are separated from the portions forming the second sealing portion 8b, the peel strength of the end portions of the first sealing portion 8a side of the second sealing portion 8b is increased. In the sealing part of the part in which the 1st sealing part 8a and the 2nd sealing part 8b are connected, the area | region with high peeling strength can be increased.

The film encapsulation portion 6 shown in Figs. 14 and 15 is formed by the following method.

First, ink is printed on the base material (for example, nylon) 2b1 which comprises the film of the length side upper surface part 2b, and the 1st printing layer 2b2 is formed. Next, ink is printed on the first printed layer 2b2 to form a second printed layer 2b3. In this case, the 2nd printing layer 2b3 uses the material from which adhesive strength becomes weaker than the 1st printing layer 2b2. Thereby, peeling strength of the steam releasing seal | sticker part 7 can be weakened. In addition, in this embodiment, if it is possible to make the peeling strength of the 2nd printing layer 2b3 weaker than the 1st printing layer 2b2, the ink which forms the 1st printing layer 2b2 or the 2nd printing layer 2b3, or The material of an adhesive agent is not specifically limited, It is possible to use the ink of arbitrary materials. For example, the material of the ink forming the first printing layer 2b2 and the material of the ink forming the second printing layer 2b3 are different from each other, so that the second printing layer 2b3 is the first printing layer 2b2. It is also possible to make it weaker. Moreover, the adhesive agent which makes the material of the ink which forms the 1st printing layer 2b2, and the material of the ink which forms the 2nd printing layer 2b3 the same, and improves adhesive force to the ink which forms the 1st printing layer 2b2 is carried out. Can be added to make the peeling strength of the first printing layer 2b2 stronger than the second printing layer 2b3, and to make the peeling strength of the second printing layer 2b3 relatively weaker than that of the first printing layer 2b2. Do. Moreover, it is also possible to make the peeling strength of the 2nd printing layer 2b3 weaker than the 1st printing layer 2b2 by adding the peeling agent which reduces adhesive force to the ink which forms the 2nd printing layer 2b3. Thus, by forming the printing layers 2b2 and 2b3 using the material which differs in peeling strength, or the ink which added them, making peeling strength of the 2nd printing layer 2b3 weaker than 1st printing layer 2b2, It is possible.

Next, the substrate 2b1 on which the two print layers 2b2 and 2b3 are formed and the sheet (for example, low density polyethylene) 2b4 having heat sealing property are dry laminated. Thereby, the film of the length side upper surface part 2b is formed.

Moreover, ink is printed on the base material (for example, nylon) 2a1 which comprises the film of the opening side upper surface part 2a, and the 1st printing layer 2a2 is formed. Next, ink is printed on the first printed layer 2a2 to form a second printed layer 2a3. In this case, the second printed layer 2a3 has a lower peel strength than the first printed layer 2a2.

Next, the substrate 2a1 on which the two print layers 2a2 and 2a3 are formed and the sheet (for example, low density polyethylene) 2a4 having heat sealing property are dry laminated. This forms the film of the opening side upper surface part 2a.

Next, the film of the opening side upper surface part 2a and the film of the length side upper surface part 2b are heat-sealed, and the steam releasing seal | sticker part 7, the 1st sealing part 8a, and the 2nd sealing part which are shown in FIG. The film encapsulation 6 having 8b) is formed.

Thereby, the film encapsulation part 6 shown in FIG. 14 is obtained.

Moreover, in the film encapsulation part 6 shown in FIG. 14, the layer thickness of each part 7, 8a, 8b which comprises the film encapsulation part 6 does not form a printing layer in the 2nd sealing part 8b, It is comprised so that condition (1) may be satisfied. However, if it is possible to satisfy the above condition (1), it is also possible to form a printing layer on the second sealing portion 8b. In this case, the printed layer of the 1st sealing part 8a or the steam releasing sealing part 7 is increased.

In addition, as shown in FIG. 15, the film encapsulation part 6 shown in FIG. 14 has a multilayer printing layer formed in a part of the opening side upper surface part 2a and the length side upper surface part 2b which form the film encapsulation part 6, respectively. It is supposed that the peel strength of each part 7, 8a, 8b shown in FIG. 14 is made different by heat-sealing with a different layer thickness for forming the parts 7, 8a, 8b shown in FIG. 14. have. However, each part 7 shown in Fig. 14 is formed by forming and heat-sealing one layer of printed layers having different peel strengths on the opening-side upper surface portion 2a and the length-side upper surface portion 2b that form the film encapsulation 6. It is also possible to make the peeling strength of 8a, 8b) different. For example, a print layer having a weak peel strength is formed in a portion of the longitudinal side upper surface portion 2b that forms the vapor releasing seal portion 7, and a strong peel strength is formed in the portion that forms the first sealing portion 8a. By forming a printing layer and heat-sealing without forming a printing layer in the part which forms the 2nd sealing part 8b, peeling strength of each part 7, 8a, 8b is made to satisfy said condition (1). It is also possible to make a difference. In this case, first, the region of the portion forming the vapor releasing seal portion 7 is subtracted and only the ink having a high peel strength is printed on the region of the portion forming the first sealing portion 8a. Next, printing is formed with ink having a weak peel strength only in the region of the portion forming the vapor releasing sealing portion 7. Thereby, even if it is a printed layer of one layer, the peeling strength of each part 7, 8a, 8b shown in FIG. 14 can be made different.

<Operation and Effects of the Packaging Bag 300 of the Present Embodiment>

Thus, the packaging bag 300 of this embodiment is each part 7 of the steam releasing sealing part 7 which comprises the film encapsulation part 6, the 1st sealing part 8a, and the 2nd sealing part 8b. The peeling strength of 8a, 8b) is comprised so that the following conditions may be satisfied.

Peeling strength of the vapor releasing sealing portion 7 Peeling strength of the first sealing portion 8a <Peeling strength of the second sealing portion 8b

Since the peeling strength of the sealing part of the corner part which connects the 1st sealing part 8a and the 2nd sealing part 8b by this becomes the highest, the internal pressure of the packing bag 300 rises and the packing bag 300 is carried out. Can be prevented from peeling off from the sealing part of the edge part when it expands. As a result, the vapor release seal portion 7 having the weakest peel strength can be peeled off from the side of the tip 70 side to easily form the first vapor discharge portion 101. The contents D can be prevented from leaking.

Moreover, in the film encapsulation part 6 of this embodiment, it is also possible to suppress peeling from the part which is not intended further by making the peeling strength of the substantially V-shaped sealing part relatively weak.

(Example 2 of Third Embodiment)

Next, Example 2 of the third embodiment will be described.

As shown in FIG. 16, the packaging bag 300 of Example 2 of 3rd Embodiment has the strong sealing part with strongest peeling strength in the connection part to which the 1st sealing part 8a and the 2nd sealing part 8b are connected ( 8ab). Thereby, since it consists of having the strong sealing part 8ab in the part which the 1st sealing part 8a and the 2nd sealing part 8b connect and comprise, it can prevent it from peeling off from the strong sealing part 8ab.

As a result, when the internal pressure of the packaging bag 300 rises and the packaging bag 300 expands, it does not peel off from the strong sealing portion 8ab having the highest peel strength and the vapor releasing seal portion 7 having the weakest peel strength. It peels from the front end 70 side of the opening, and it opens from the front end 70 of the steam releasing seal | sticker part 7 to the line which connected the starting points 71 and 71 of two points which start substantially V shape. And a first vapor discharge portion for discharging water vapor and the like in the packaging bag 300 to the outside with the opened region and the unsealed portion 9 (polygonal unsealed portion 9a, strip unsealed portion 9b) ( 101 is formed. As a result, it is possible to prevent the packaging bag 300 from being peeled off from the unintentional portion when the packaging bag 300 is inflated. The packaging bag 300 is peeled off from the distal end 70 side of the vapor releasing sealing portion 7 so that the first vapor discharging portion 101 is removed. It can be formed easily.

In addition, embodiment mentioned above is a suitable embodiment of this invention, It is possible to implement in the form which various changes were made in the range which does not deviate from the summary of this invention, but does not limit the scope of this invention only to the said embodiment.

"4th embodiment"

This embodiment relates to the accommodating container used for the microwave oven bag provided with a vapor releasing mechanism.

The microwave oven packaging bag of the upright type whose cross section as described in patent document 5 becomes a substantially triangular shape is difficult to manufacture compared to the microwave oven bag of the flat laying type like what is sealed on all sides. In addition, when using a microwave oven, when used in a standing state, there is a risk of falling in the microwave oven, it is used in a flat state. However, such a stand up type microwave oven bag becomes a substantially triangular shape with the side (bottom) spread out when used in a flat state, and the steam escape portion opened by the pressure rise during use of the microwave oven to the overall height. It was located in the low or slightly low position with respect to the vapor | steam, and the steam release part was unable to reflect the stress by a pressure rise effectively, and it was supposed to reduce steam releasing performance.

Moreover, since such a microwave oven bag does not have a part used as a handle, the whole packaging bag became high temperature after heating in a microwave oven, and there was concern about burns or the like when taken out of the microwave oven. Also, since the packing bag's own seating is not enough, it is difficult to eat food directly from the packing bag because of the danger of falling, etc. It was not.

The present invention has been made in view of the above circumstances, and an object thereof can be easily manufactured, and a packaging bag for a microwave oven, which forms vapor leakage with the increase in the internal pressure due to the vapor pressure, is built without risk of conduction or the like. The present invention provides a microwave bag receiving container that can be placed and heated in a microwave.

(Example 1 of the fourth embodiment)

First, the container of this embodiment is demonstrated, referring FIGS. 17-19.

17 is a perspective view of the microwave bag accommodation container 400 according to the present embodiment. The microwave bag accommodating container 400 of the present embodiment is a substantially cylindrical container made of paper, having a bottom surface 402 and a side surface 403, and having an open top.

As shown in FIG. 19, the microwave bag accommodation container 400 includes a side surface 403 that stands vertically with respect to the bottom surface 402 in a substantially elliptical shape as surrounding the bottom surface 402. The height of the side surface 403 is the height which does not cover the steam releasing seal | sticker part which removes the steam of the packaging bag mentioned later. The intersection between the bottom surface 402 and the side surface 403 has a fold line 405 connected at both ends, and has an arc shaped gap 406 at the center along the fold line 405 at both ends. Thus, the bottom surface 402 and the side surface 403 are connected only to a part of both ends, and it is possible to bend easily and easily. In addition, the bottom surface 402 has a bridge shape in which the center portion thereof swells upward so that both ends thereof are grounded. In addition, the bottom surface 402 has a flat shape so that it can be supported by at least the side surface 403 and kept in a standing state when the packaging bag is accommodated.

Next, the shaping | molding method of the microwave bag accommodation container 400 is demonstrated. 18 is a developed view of the microwave bag accommodation container 400 according to the present embodiment. The microwave bag receiving container 400 is formed by folding a single piece of paper.

The bottom surface 402 located at the center when the microwave bag receiving container 400 is deployed has a straight portion 411 which is grounded when assembled and an arcuate curved portion 412 which is connected to the side surface 403. It is made of an approximately elliptic shape. The curved portion 412 has a fold line 405 connecting the bottom surface 402 and the side surface 403 at both ends thereof, and is approximately arc-shaped so as to connect the fold lines 405 between the fold lines 405 at both ends thereof. Along the gap corresponding to the gap 406 is entered. Side 403 may erect side 403 approximately perpendicular to bottom surface 402 by folding along fold line 405. When the side surface 403 is placed vertically, the bottom surface 402 may be bent in a bridge shape as described above, thereby improving designability and rigidity. In addition, since the heat-sealing bag and the ground plane can be separated as far as possible, the heat-insulating property of the bag can be increased, and the heat from the bag is transferred to the installation site to suppress the high temperature.

One side 403 also has a convex portion 414 that fits into the incision 415 provided in the other side 403. The convex portions 414 are convex toward the bottom surface 402 so as not to spread in the circumferential direction when provided at both ends of the side surface 403 and assembled. An incision 415 provided at a location corresponding to the convex portion 414 of the other side surface 403 is installed in an arc shape by being inclined with respect to the bottom surface 402 so as to easily fit the convex portion 414. . In addition, the convex portion 414 is provided with a line 413 folded in a direction perpendicular to the bottom surface 402. As a result, even when assembled into an arc shape, the convex portion 414 can be easily fitted into the incision 415. The convex portion 414 is fitted into the incision 415 from the outside of the side 403 which overlaps with each other when the side surface 403 is erected so that the convex portion 414 of the tip comes out and is fixed to the inside of the side surface 403.

19 is a top view of the microwave bag accommodation container 400 according to the present embodiment. At both ends in the long side direction in the bottom surface 402 having an approximately elliptical shape, holes 421 spaced apart from the bottom surface 402 and the side surface 403 are provided. The hole 421 is formed in circular arc shape of the straight part 411 and the side surface 403 of the bottom surface 402, and becomes substantially semi-circular. By this structure, the side surface 403 can be bent easily, and the convex part 414 and the incision 415 can be fitted easily.

Here, the packaging bag accommodated in the microwave bag accommodation container 400 which concerns on this embodiment is demonstrated. FIG. 20 is a view showing a configuration example of the packaging bag 31 of the present embodiment, and is a perspective view of the packaging bag 31 in which the contents 40 are accommodated in the packaging bag 31 and heat-sealed to seal the opening.

The packaging bag 31 of this embodiment is a packaging bag which has sealing parts 34, 27, 28 formed by sealing the peripheral edge part of the film which comprises the upper surface part 32, and the film which comprises the lower surface part 33. As shown in FIG. (31).

The packaging bag 31 of this embodiment has the vapor releasing sealing part 35 which protruded and formed the substantially center part of the sealing part 34 in substantially V shape toward the inner direction of the packaging bag 31, and the steam releasing sealing. It has the unsealed part 36 formed in the outer side of the steam releasing sealing part 35 adjacent to the part 35, and the internal pressure of the packing bag 31 rose and the packing bag 31 expanded. When the stress is concentrated in the steam releasing seal 35 at this time, the steam releasing seal 35 is peeled off and is opened, and the steam is released to release steam in the packaging bag 31 to the opened area and the unsealed portion 36. Form wealth.

The packaging bag 31 of this embodiment is comprised with the lower surface part 33, the upper upper surface part 32a superimposed on the upper side, and the lower upper surface part 32b superimposed on the lower side of the lower surface 33. As shown in FIG. The packaging bag 31 of this embodiment comprises the upper surface part 32 by the upper upper surface part 32a and the lower upper surface part 32b.

The packaging bag 31 of this embodiment heat-seats both edges of the lower surface part 33 and the upper surface part 32, and forms a part of side sealing part 37. As shown in FIG. In addition, the three-side edges of the lower surface portion 33 and the upper upper surface portion 32a are heat-sealed to form part of the side sealing portion 37 and the end sealing portion 38. In addition, the upper upper surface portion 32a and the lower upper surface portion 32b are folded, folded and heat-sealed to form a film encapsulation portion 39.

The film encapsulation portion 39 has a vapor releasing sealing portion 35 which protrudes by bending substantially in a V shape toward the inner side of the packaging bag 31 at the central portion of the long side direction of the film encapsulation portion 39. On both sides of the vapor releasing sealing portion 35, a band-shaped sealing portion 34 is provided along the edges of the long side direction and the short side direction of the film encapsulation portion 39. The steam releasing sealing portion 35 and the band-shaped sealing portion 34 are overlapped and heat-sealed portions of the upper upper surface portion 32a and the lower upper surface portion 32b. The sealing part 34 is connected.

The film encapsulation portion 39 has an unsealed portion 36 on the outside of the vapor releasing seal portion 35. The unsealed portion 36 is an outside heat-sealed portion surrounded by the sealing portion 34 and the vapor releasing sealing portion 35 that overlap and heat seal the upper upper surface portion 32a and the lower upper surface portion 32b. The steam releasing seal | sticker part 35 of this embodiment is comprised in the shape which protruded by bending substantially V shape toward the inner side direction of the packaging bag 31. As shown in FIG.

The vapor releasing sealing part 35 has an inner curved shape protruding from the V-shape on the inner side of the packing bag 31 not adjacent to the unsealed part 36, and the packing bag 31 adjacent to the unsealed part 36. It is formed of the heat sealing which has the outer curved shape of the outer side of the outer side, and the front end side of the steam releasing sealing part 35 becomes narrow. For this reason, when the internal pressure of the packaging bag 31 rises and the packaging bag 31 expands, only the front end side of the steam releasing sealing part 35 peels and opens, and it wraps with the opened area | region and the unsealing part 36 A vapor discharge portion for releasing water vapor or the like in the bag 31 is formed. Then, water vapor and the like in the packaging bag 31 are discharged to the outside from the vapor discharge portion. As a result, even if the internal pressure of the packaging bag 31 rises and the packaging bag 31 expands, water vapor or the like in the packaging bag 31 is released from the vapor discharge portion to the outside, thereby preventing the packaging bag 31 from rupturing. Can be.

FIG. 21: is a figure which shows embodiment of the microwave oven bag accommodation container 400 in one Embodiment of this invention. As described above, the microwave bag accommodating container 400 and the packing bag 31 have a steam releasing seal portion of the packing bag 31 from the opening 404 of the microwave bag accommodating container 400 as shown in FIG. 35) are set integrally to expose. 22 illustrates an expanded state by heating the microwave bag receiving container 400 and the packing bag 31 in a microwave oven, and FIG. 22A illustrates the microwave bag receiving container 400 and the packing bag 31. 22 (b) shows a side view of the microwave bag receiving container 400 and the packaging bag 31.

As shown in FIG. 21, the bottom surface 402 of the microwave bag accommodation container 400 is faced down, and the opening 404 of the side surface 403 is turned up from the opening 404 of the microwave bag accommodation container 400. As shown in FIG. The packaging bag 31 can be set up by accommodating the packaging bag 31. The microwave bag accommodation container 400 and the packaging bag 31 can also be appropriately bonded using a known adhesive or the like. When the steam releasing seal 35 of the packaging bag 31 is above the opening 404 of the microwave bag accommodating container 400, the steam releasing sealing part 35 is blocked by the microwave bag accommodating container 400. There is no.

When the sealed packaging bag 31 is heated in a microwave oven, water vapor or the like is generated in the packaging bag 31, and the packaging bag 31 expands due to high temperature and high pressure. Then, as shown in FIG. 22, the horizontal cross section of the main body part of the packaging bag 31 which consists of the lower surface part 33 and the upper surface part 32 expands so that it may become an elliptical shape, and at the same time, the steam releasing sealing part of the film encapsulation part 39 will be expanded. 35, the space partitioned by the band-shaped sealing part 34 expands. As a result, force is applied to the tip portion of the vapor releasing seal portion 35 constituting the film encapsulation portion 39 so that peeling of the heat seal occurs from the tip of the steam releasing seal portion 35, and the steam releasing sealing portion ( A tip of 35 is opened, and a vapor discharge portion is formed which discharges water vapor and the like in the packaging bag 31 to the opened region and the unsealed portion 36. As a result, water vapor or the like generated in the packaging bag 31 can be discharged to the outside from the vapor discharge portion.

According to this embodiment, in the state which accommodated the packaging bag 31 in the microwave bag accommodating container 400 so that the steam releasing sealing part 35 of the packaging bag 31 may be exposed from the microwave bag accommodating container 400 at least. By heating the contents 40, it is possible to safely take out the microwave from the microwave using the microwave bag receiving container 400 as a handle without waiting for the contents to cool, and the cut portion 41 formed on the top of the packaging bag 31. By cutting out the bag from the packaging bag, the packaging bag 31 and the microwave bag receiving container 400 can be erected and the contents can be eaten as it is.

In addition, the packaging bag 31 of the present embodiment is provided with the film encapsulation portion 39, which is positioned above the upper surface level of the contents 40 in the packaging bag 31, to the vapor releasing sealing portion 35 forming the vapor discharge portion. As a result, boiling of the contents 40 in the packaging bag 31 can be prevented, and leakage of the contents 40 in the packaging bag 31 can be prevented.

In addition, the microwave bag accommodation container 400 of this embodiment is not limited to this embodiment, At least the vapor-extraction sealing part 35 of the packaging bag 31 should just be exposed from the microwave bag accommodation container 400, For example, when the height of the side surface of the microwave bag accommodating container 400 is the same as or higher than that of the packaging bag 31, a portion of the corresponding portion is cut out above the steam releasing sealing part 35, that is, the steam is released. It is possible to use these etc. suitably.

(Example 2 of the fourth embodiment)

The microwave oven bag accommodating container 51 according to the present embodiment can be heated in a microwave oven in a state where the packaging bag 31 is placed on a flat surface, for example, after storage. The container which made it easy to take out and improved convenience is demonstrated. (A) is a perspective view which shows the folded state of the microwave oven bag accommodation container 51 which concerns on this embodiment, (b) is sectional drawing of the arrow A-A line of (a).

As shown in FIG. 23, the microwave bag accommodation container 51 is provided in the container main body 52 which can be developed in cylindrical shape by pushing the side edges of both sides from a folding state, and the lower end of this container main body 52. As shown in FIG. It consists of a bottom member 53, and the bottom surface is made to fold and unfold in the bottom member 53 in conjunction with the folding and unfolding of the container main body 52.

The container body 52 has two side walls 54 as shown in Fig. 24 (a) using sheet material such as a thick paper or a synthetic resin sheet so that both side walls 54 are connected to each other at one side edge. Formed from one sheet, the two side walls 54 are folded in two on the fold line 55, and the other side edges are glued to each other with the pull attachment pieces 56 to press both side edges from a flat folding state to form a tubular shape. It can be developed with one touch.

In this container main body 52, the lower edge of the both side walls 54 is formed in the horizontal straight edge which is substantially perpendicular to the vertical axis of the container main body 52. As shown in FIG. A strip-shaped connecting piece 57 which connects with the bottom member 53 at the center position in the width direction at the lower edges of the side walls 54 is protruded in a downwardly extending shape.

The bottom member 53 uses a sheet material that is the same as the container body 52 in the material, and a pair of bottom walls 62 are folded in two with a straight fold line 61 interposed therebetween as shown in FIG. 24 (b). It is formed so that it can be developed to both sides from a state, and both bottom walls 62 become a plate shape in which the outer edge opposite to the fold line 61 which becomes a straight line becomes an arcuate bulging edge, and the fold of both bottom walls 62 is carried out. The length of the direction along the line 61 is set to the length between the two side edges of the folded container body 52, the folded line 61 side is located inside the container body 52 in a folded state, A portion of the bottom wall 62 enters the container body 52 in an arrangement projecting outward from the bottom edge of the side wall 54.

Both bottom walls 62 of the bottom member 53 have a central long hole 63 on the fold line 61 and an outer long hole 64 at an equidistant position with the fold line 61 therebetween. Outer slot 64 is provided with the strip | belt-shaped connection piece 57 provided in the arrangement | positioning of this parallel state, and formed continuously in the lower edge of each side wall 54 of the container main body 52 in the state which developed the bottom member 53. The side wall 54 and the bottom wall 62 are connected by folding the bend at the bottom surface of the bottom wall 62 from above and bending the tip end portion thereof to pass through the central long hole 63 from below.

The microwave oven encapsulating container 51 of the present embodiment has the above-described configuration, and both sidewalls 54 overlap the container body 52 as shown in Figs. 23A and 23B when used on a flat surface. It is folded so as to be folded, and the bottom member 53 is folded in two, sandwiched between the lower end portions between both side walls 54, and the whole is made into a flat shape. In this state, the connecting pieces 57 provided on the both side walls 54 are folded inward by folding in two of the bottom members 53.

Fig. 25 is a perspective view showing that the microwave bag accommodating container 51 and the packaging bag 31 are integrally placed on a flat surface. The microwave bag accommodating container 51 and the packing bag 31 are accommodated so that at least the steam releasing sealing part of the packing bag 31 is exposed from the microwave bag accommodating container 51. The accommodated packaging bag 31 may be fixed to the microwave bag receiving container 51 using a known adhesive or the like.

The microwave oven bag accommodating container 51 according to the present embodiment can operate the microwave oven with the packaging bag 31 placed on a flat surface when the contents 40 are heated in the microwave, for example. When operating, the microwave oven can be operated stably without fear of falling. Moreover, even when it takes out from a microwave oven, the microwave oven bag accommodation container 51 can be taken out, and the microwave oven bag accommodation container 51 and the packaging bag 31 can be taken out, without worry of burns.

In addition, the microwave bag accommodating container 51 and the packaging bag 31 taken out from the microwave oven are pressed against the side edges of the microwave bag accommodating container 51, so that both bottom walls of the bottom member 53 are shown in FIG. 62 can be pulled out with one touch and can be easily set up. After that, by cutting off the upper portion of the packaging bag 31, the contents 40 can be easily taken out, and the convenience at the time of eating can be improved.

According to the present embodiment, since the microwave bag receiving container 51 and the packaging bag 31 are warmed on a flat surface, the microwave bag receiving container 51 and the packaging bag 31 can be easily erected. You can eat the contents 40 right after warming without worry.

In addition, embodiment mentioned above is suitable embodiment of this invention, It does not limit the scope of this invention only to the said embodiment, It can implement in the form which various changes were made in the range which does not deviate from the summary of this invention.

The techniques described in the first to fourth embodiments can be combined as appropriate. For example, in 2nd Embodiment and 3rd Embodiment, a sealing width is made into a taper shape similarly to 1st Embodiment, or in 3rd Embodiment, it is a polygonal unsealed part like 1st Embodiment or 2nd Embodiment. It is also possible.

100，200，300 bags
6 film ensemble
7 Steam releasing seal
101 first vapor outlet
102 second vapor outlet
2a2 first printed layer
2a3 second printing layer
400 containers
31 bags
35 Steam releasing seal

Claims (7)

Packaging bag with steam releasing seal,
It has a strip-shaped 1st sealing part and the strip | belt-shaped 2nd sealing part which cross | intersects the said 1st sealing part, and the said steam releasing sealing part,
A first printed layer printed on a first region including at least the vapor scavenging sealing portion and a portion forming the first sealing portion and a second printed layer printed on a second region including at least a portion forming the steam releasing sealing portion As a packaging bag in which a film composed of a film is heat-sealed,
When the internal pressure rises, the second printed layer is separated from each other to form a first vapor discharge part.
The first printed layer and the second printed layer are laminated,
A peeling strength of the said steam releasing sealing part <peeling strength of the said 1st sealing part <peeling strength of the said 2nd sealing part is established, The packaging bag characterized by the above-mentioned. The method of claim 1,
The packaging bag of claim 2, wherein the second region does not include the first sealing portion and the second sealing portion. The method of claim 2,
The second printed layer is a packaging bag, characterized in that the peeling strength is weaker than the first printed layer. The method according to any one of claims 1 to 3,
The packaging bag of claim 1, wherein the first region does not include the second sealing portion. The method according to any one of claims 1 to 3,
The packaging bag, characterized in that the steam releasing sealing portion is formed in a shape projecting toward the inner direction. The method according to any one of claims 1 to 3,
A lower surface portion, an opening side upper surface portion and a length side upper surface portion;
And a vapor releasing sealing portion, the first sealing portion and the second sealing portion in a film encapsulation portion formed by bending, folding and overlapping the opening side upper surface portion and the length side upper surface portion. The method according to any one of claims 1 to 3,
A packaging bag, characterized in that it has a second steam discharge portion configured to be capable of discharging steam from the inner surface of the film to the outer surface outside the steam releasing sealing portion.

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