JP3409159B2 - Bag and pressure adjustment mechanism for bag - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag having an adjusting mechanism for releasing pressure when the pressure in the bag rises. More specifically, it has a chuck portion that opens and closes the bag body, and the chuck portion is appropriately opened by steam generated when the water content of the bag body evaporates when cooked in a microwave oven or the like. In addition, the present invention relates to a bag having a pressure relief portion for ejecting excess pressure generated by the steam or the like to the outside.

[0002]

2. Description of the Related Art Conventionally, when cooked food is cooked in a microwave oven or the like, if the cooked food is left inside the bag, the steam generated from the cooked food may cause the bag to burst, so Moreover, it was served on a plate and cooked. Alternatively, the bag is cooked in a microwave oven or the like with fine holes formed in the bag and the cooked product inside the bag.

[0003]

First, in order to prevent the bag body from bursting, when the bag body is once taken out from the bag and cooked, or when the water content is higher than a certain level, such as a cooked product with a high water content or a cooked product that requires soup stock, etc. When cooking what I had, I couldn't cook well because the water evaporated more than necessary. In addition, when cooking rice, which requires a certain pressure during cooking, it is impossible to apply pressure when it is placed in a plate or the like, and it cannot be cooked as it is. Although it can be solved by giving strength to the bag and sealing the contents of the cooked product with strength, these are not only expensive, but they can be easily sealed at home,
It wasn't something I could use. In such a case, for example, it is very inconvenient to use a special container or the like made of pottery or the like to which pressure is applied according to the cooked product.

Alternatively, for example, when an attempt is made to release pressure by making a hole in the bag itself with the cooked product kept inside the bag, the strength of the bag is reduced and the contents leak or the like. Is caused. Therefore, there is a need for some sort of solution that allows cooking with a large amount of water, which cannot be cooked in a microwave oven, in a bag.
In particular, some special bag body is desired in order to widen the range of utilization of the microwave oven which is widely used for easy cooking at present.

[0005]

SUMMARY OF THE INVENTION The present invention provides a bag body whose pressure can be adjusted in order to solve the above problems, and is intended to allow the internal pressure to be safely and easily discharged. Therefore, the invention according to claim 1 has a first chuck portion that opens and closes both sides of the bag body from one side of the bag toward the other side facing in the opening direction of the bag. A second chuck portion is provided from one chuck portion to the bottom portion of the bag body from one side edge of the bag body to the opposite side edge, and a second chuck portion between the first chuck portion and the second chuck portion is provided. The bag body has a pressure relief portion on the surface of the bag body, and the first chuck portion is a chuck composed of a protruding side for locking and a sandwiching side for locking, and the tip of the protruding side for locking is substantially triangular. It has a projecting part with a shape, and the projecting part of the projecting part has a corner and it is sandwiched by the sandwiching piece of the sandwiching side for locking. The second chuck part is formed by dropping the corners of the protrusions of the substantially triangular protrusions at the tip of the locking protrusions and clamped by the clamping pieces of the locking clamping sides. The holding force of the second chuck portion is weaker than that of the first chuck portion, which can be solved.

Alternatively, as in the invention as defined in claim 2, there is provided a tongue piece portion having one end side portion communicating with the inside of the bag body on one side and the other end side portion having an opening portion at both end portions having an opening. The tongue piece has a first chuck portion that opens and closes both sides of the tongue piece from one side of the tongue piece toward the other side of the tongue piece in the opening direction of the tongue piece. It has a second chuck part from the one side of the tongue part to the other side opposite in the continuous direction, and pressure is applied to the surface of the bag body between the first chuck part and the second chuck part. The first chuck part has a substantially triangular protrusion at the tip of the locking protrusion and the protrusion of the protrusion has a corner. The second chuck portion is for sandwiching and closing, and the second chuck portion is a protrusion portion of a substantially triangular protrusion at the tip portion of the locking protrusion side. The drop was formed is intended to close and sandwiched between holding pieces of the locking clamping sides, gripping force of the second chuck can be achieved even by a weak bag than the first chuck.

Alternatively, as in the invention according to claim 3, there is provided a bag body having a tongue piece portion on one surface of the bag body, the tongue piece portion communicating with the inside of the bag body, the tongue piece portion having a bag body at one end side thereof. A second chuck portion that is in communication with each other and has a substantially bag shape with the other end side closed, and that opens and closes both sides of the tongue piece from one side of the tongue piece to the opposite side. A bag body having a pressure relief portion on a surface between the second chuck portion and the other end side portion, and extending from one side edge of the bag body toward the other side edge in the opening direction of the bag body main body. Has a first chuck portion that opens and closes both sides of the opening, and the first chuck portion has a substantially triangular protrusion at the tip of the locking protrusion and the protrusion of the protrusion has a corner. The second chuck part has a substantially triangular shape at the tip of the protruding side for locking. Is formed by dropping the corners of the projecting portion of the projecting portion, and is sandwiched by the sandwiching pieces of the sandwiching side for locking and closed, and the sandwiching force of the second chuck portion is weaker than that of the first chuck portion. It can also be achieved by a bag that is a thing.

Alternatively, as in the fourth aspect of the present invention, a substantially arrowhead-shaped projecting portion is formed at the tip of the locking projecting side of the second chuck portion, the projecting portion forming a slanted return in both directions. The second chuck portion is closed by forming the protruding portion located inward of the bag body to be slightly shorter and sandwiching the protruding portion of the locking protruding side with the holding piece of the holding side for locking. The bag body may have a grip force of the second chuck portion weaker than that of the first chuck portion. Further, as in the invention of claim 5, as a projecting portion of the tip portion of the locking projecting side of the second chuck portion, a circular projecting section is provided in place of the substantially triangular projecting section. The second chuck portion is closed by sandwiching the circular protruding portion of the second chuck portion with the sandwiching piece of the retaining sandwiching side, and the sandwiching force of the second chuck portion is weaker than that of the first chuck portion. It can be the body.

Alternatively, as in the invention of claim 6, among the holding pieces of the holding side for holding of the second chuck portion, the holding piece located inward of the bag body is formed to be slightly shorter, and the holding projection is formed. The second chuck portion is closed by sandwiching the protruding portion of the side with the sandwiching piece of the retaining sandwiching side, and the sandwiching force of the second chuck portion is weaker than that of the first chuck portion. May be used.

In addition, as in the invention of claim 7, a circular clamping piece is formed at the tip of the retaining side of the second chuck portion, and the protruding portion of the retaining side is used for retaining. The second chuck portion is closed by sandwiching it with a circular sandwiching piece of the sandwiching side, and the bag body may have a sandwiching force of the second chuck portion weaker than that of the first chuck portion. With respect to each of the above bag bodies, the pressure can be effectively discharged because the pressure relief portion is a bag body constituted by holes, slits, or substantially mesh-shaped pressure relief portions as in the invention of claim 8.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION To explain an embodiment of the present invention, FIG. 1 is a diagram showing a state of one embodiment according to the present invention. The bag body 1 has a bottom portion 2 and a side edge 3 which are sealed and has an opening portion 4. A first chuck portion 5 is provided in parallel with the opening 4 in the direction of the opening 4 on one surface of the bag 1, and the inside of the bag 1 can be closed. A second chuck portion 6 is arranged in parallel with the first chuck portion 5 with a gap in the direction of the bag 1 bottom portion 2.
A surface portion which is one surface of the bag body 1 is located between the first chuck portion 5 and the second chuck portion 6, and the side portion 3
A hole serving as a pressure relief portion 7 is provided in the direction.

Therefore, when the contents are sealed in the bag body 1 as described above, the first chuck part 5 and the second chuck part 6 are opened to put the contents inside the bag body 1, and then The contents can be enclosed by closing the first chuck part 5 and the second chuck part 6, respectively. When the bag 1 having such contents sealed therein is heated and cooked by a microwave oven or the like, the contents which are the cooked products are heated, the moisture of the cooked products becomes steam, and pressure is applied to the bag 1. Normally, in the case of a completely sealed bag body, if this pressure increases, the bag body may be damaged, but in the case of the bag body 1 according to the present invention, this pressure is applied to the second chuck portion 6, When the pressure of the contents of the body 1 cannot be withstood, the second chuck portion 6 comes off, and the internal pressure is also applied to the space between the first chuck portion 5 and the second chuck portion 6. Becomes In this case, a hole is provided as the pressure relief portion 7 on the side surface of the bag body 1 between the first chuck portion 5 and the second chuck portion 6, and since the hole is opened, the pressure inside the bag body 1 is reduced. Will be ejected to the outside through this hole.

From the above, when the pressure inside the bag body 1 exceeds a certain level, the second chuck portion 6 is disengaged and the pressure provided between the first chuck portion 5 and the second chuck portion 6 is removed. Vapor in the bag 1 is ejected to the outside by the hole which is the escape portion 7,
The bag can be heated and cooked, and the bag can be prevented from being damaged. In this case, the pressure relief portion 7 is provided on the surface that is one surface of the bag body 1.
However, in the case of putting the bag body 1 in a microwave oven, for example, in the case of a flat bag body, the bag body is often placed in a lying state. In order to prevent the contents inside the body from leaking to the outside, it is necessary to provide the pressure relief portion 7 on only one surface as shown in this figure.

Therefore, for example, in the case where a cooked product is put in a seasoning liquid such as soup stock and cooked by heating,
Since the pressure relief portion 7 is provided only in the upper surface direction of the bag body 1, the liquid content is not leaked to the outside. still,
Regarding this pressure relief portion 7, in this drawing, the hole is the side 3
One hole is provided in the direction, but the size of this hole is for pressure relief, and the size of the hole is appropriately changed according to the contents and the fitting force of the first chuck part 5 and the second chuck part 6. It is only necessary to determine the height of the bag body 1, and the position of the arrangement of the bag body 1 may be determined appropriately from the viewpoint of design or the like.

Next, it is necessary that the contents of the first chuck portion 5 and the second chuck portion 6 can be hermetically closed, and that the contents can be freely opened and closed. What is closed may be opened. Further, the sealing degree of the first chuck section 5 and the second chuck section 6 may be the same or different. However, the first chuck portion 5 needs to be closed even if the pressure relief portion 7 is provided when the second chuck portion 6 is opened by the pressure in the bag body 1,
It is necessary to have such a degree of sealing.

From the above, as the mechanism of the bag body 1 of the present invention,
A first chuck means 5 which is an openable and closable first chuck portion 5 for closing the opening 4 of the bag 1 in the direction of the opening 4 of the bag 1 main body is provided, and then the first chuck means 5 is provided. 5, pressure relief means 7 which is a pressure relief portion 7 is provided in the direction of the bottom 2 of the bag 1 in which the food to be cooked is placed, and the second chuck means is provided in the direction of the bottom 2 of the body of the bag 1 from this pressure relief means It is a thing. The second chuck means 6 is composed of a second chuck portion 6 that can be opened and closed to separate the pressure relief means 7 from the inside in the direction of the bottom 2 of the bag 1 and prevent leakage of contents.

The pressure relief means 7 isolated by the second chuck means 6 is such that the contents inside the bag body 1 are closed by the second chuck means 6, and the pressure relief means 7 and the inside of the bag body 1 are hollow. It means that it is maintained in an isolated state without communication. Therefore, even if the content is liquid, it does not leak from the bag body 1 to the outside. When heating or pressure cooking is performed in such a state, the internal pressure in the bag body 1 is increased, and the second chuck means 6 is brought into a state where it is opened, that is, closed. Then, the internal pressure in the bag body 1 reaches the pressure relief means 7 whose isolation has been released. In such a state, the pressure in the bag 1 can be discharged to the outside by the pressure relief means 7. In particular, when the pressure relief means 7 discharges the internal pressure to the outside, it is possible to adjust the internal pressure inside the bag body 1 by its size and arrangement.

Next, FIG. 2 is a sectional view taken along line AA of FIG.
The upper surface, which is one surface of the bag body 1, has a hole serving as a pressure relief portion 7, and has a first chuck portion 5 and a second chuck portion 6 on both sides of the hole, respectively. . The first chuck portion 5 has a locking protruding side 8 projecting inward of the bag 1 on one surface of the bag 1 and two sides projecting inward of the bag 1 on the other surface. Has a holding side 9 for holding, and the holding side 9 holds the protruding side 8 for holding,
It is locked so as to sandwich the locking protruding side 8. In particular, a substantially triangular protrusion 81 is provided at the tip of the locking protrusion 8.
And the holding sides 9 for locking each have a holding piece 91 inwardly.
The projecting portion 82 of the projecting portion 81 is held by the sandwiching piece 91 to close one surface and the other surface of the bag body 1. Wall portions 10 are provided on both sides of the locking protruding side 8 and the locking sandwiching side 9, respectively.

Next, the second chuck portion 6 is also the bag body 1 in the same manner.
On one surface, there is a locking projection side 8 that projects inward of the bag body 1, and on the other surface, there is a locking sandwiching side 9 that consists of two sides that project inward of the bag body 1, The locking projecting side 8 is sandwiched by the locking sandwiching side 9, and is locked so as to sandwich the locking projecting side 8. A substantially triangular projecting portion 81 is provided at the tip of the locking projecting side 8, each of the locking sandwiching sides 9 has a sandwiching piece 91 inward, and the projecting portion 82 of the projecting portion 81 is sandwiched. It is held down by the piece 91 to close one side and the other side of the bag body 1. In the bag body 1 having such a structure, when the pressure inside the bag body 1 is increased by heating the cooked food in the bag body 1 or the like, pressure is applied to the second chuck portion 6 and is clamped by the clamping clamping side 9. The engaging protruding side 8 is disengaged and is in an open state, and the first chuck portion 5 and the second chuck portion 6 are
The pressure of the bag body 1 is also applied between them. This pressure is discharged to the outside from the hole which is the pressure relief portion 7, and all pressures above a certain level are discharged to the outside, and the bag 1
The inside can be kept under constant pressure.

On the contrary, the pressure above a certain level is not applied to the first chuck portion 5, and the locking protruding side 8 of the first chuck portion 5 is clamped by the locking clamping side 9. The first chuck portion 5 can be maintained in the closed state while maintaining the open state. With this configuration, for example, when the bag 1 is heated with a microwave in a state where the cooked product is placed in the bag 1, pressure is applied to the bag 1 by the steam or the like generated from the cooked product. In this case, the second chuck portion 6 is in a closed state when only a pressure equal to or lower than a certain level is applied, and cooking can be performed by applying a certain pressure to the cooked product. The chuck portion 6 is opened, and the internal pressure is discharged to the outside between the first chuck portion 5 and the second chuck portion 6 and through the hole which is the pressure relief portion 7 provided therebetween. Thereby, the pressure in the bag body 1 can be maintained below a certain level. In particular, the pressure applied to the first chuck portion 5 can be prevented from being applied to the extent that it is opened by adjusting the pressure by exhausting through the hole, and can be maintained in a state where pressure is applied to the bag body 1 in the closed state. , Enables cooking.

In addition, for example, when a large amount of liquid such as soup stock is used for cooking, it is necessary to prevent the liquid in the bag 1 from spilling to the outside. Since the pressure relief portion 7 is provided only on the surface located at, the vapor can be discharged to the outside even when the second chuck portion 6 is opened, and the liquid itself can be stopped in the bag body 1. In addition, since the first chuck portion 5 can maintain the closed state,
It is also possible to prevent the liquid from leaking from this portion. For example, even when rice or the like is enclosed in the main bag 1 and cooked in a microwave oven, when the rice and water are heated and heated to a certain pressure, the second chuck portion 6 opens, and this pressure is applied. Can be discharged from the pressure relief portion 7, and the first chuck portion 5 can be maintained in a closed state, and so-called steaming can be performed by constantly applying a constant pressure.

In this case, in this figure and FIG. 1, as the pressure relief portion 7, a hole of a certain size is provided in the direction of one side 3 of the bag body 1, but the pressure relief portion is not limited to this. It should be possible. Therefore, in the case of using the holes, the size of the holes may be appropriately determined according to the pressure in the bag body 1, and may be large or small. Further, not only one hole is provided, but two or more holes or a plurality of holes may be provided, and the installation location may be arbitrarily provided. This means that the shape of the hole is not limited to a circle and may be an ellipse or a square shape. However, a flat bag like the main bag 1 must be placed in a lying state, and the pressure relief portion 7 needs to be provided only on one surface of the bag 1.

Next, as shown in FIG. 1 and this figure, the first chuck portion 5 and the second chuck portion 6 have the same shape, but the present invention is not limited to this, and different shapes may be used. Good. For example, when the second chuck portion 6 is provided with a cylindrical protrusion in the longitudinal direction of the chuck, that is, a protrusion having a circular cross section, as the protrusion 81 at the tip of the protrusion 8 for engagement, the engagement clamp is provided. The holding force of the side 9 is weaker than that of the triangular shape, and the side 9 opens even with a small pressure below a certain level. On the other hand, when the first chuck portion 5 has the shape shown in the figure, it can withstand a certain pressure or more.

As described above, each of the first chuck portion 5 and the second chuck portion 6 is not limited to the structure shown in the drawing, but can be opened and closed while maintaining a hermetically sealed state and is subjected to a constant pressure. In this case, any opening can be used, and even if the first chuck portion 5 and the second chuck portion 6 are opened by the same pressure, the chucking force, that is, the closing force of each, May be different. FIG. 3 is a view showing an embodiment in which the present invention is used for the bag 1 that can stand upright. The upright bag body 1 refers to a bag body in which the bag body 1 can be maintained in an upright state by the bottom 2 like a bag body having a square bottom body, and is a bag body that does not need to be laid down.

As shown in the figure, in the case of a square bottom body, a bag body 1
Since the bag 1 can be placed in an upright state by the bottom portion 2, the possibility that the cooked food inside leaks to the outside when the contents are put in and cooked is very convenient. That is, when the liquid-state cooked product is included, the bag body 1 shown in FIG.
In the structure, there is a possibility that the liquid will spill out of the pressure relief portion 7, but in the case of this structure, the bag 1 can have an extremely large internal volume, which is superior to the cooking product having a large amount of liquid. However, it can be used. As shown in FIG. 3, pressure relief portions 7 are provided on both sides of the rectangular bottom body in the direction of the opening 4 of the bag 1, and the pressure relief 7 is located above the bag 1 in the direction of the opening 4 of the bag 1. A first chuck portion 5 is provided, and a second chuck portion 6 is provided below the bag 1 in the direction of the bottom 2 of the bag 1.

The pressure relief portion 7 is formed of a mesh-like breathable member instead of the hole. Even when such a pressure relief portion 7 is provided, the pressure such as the vapor pressure generated from the contents can be discharged to the outside. Therefore, when the contents part which is a cooking product is enclosed in the bag body 1 and each of the first chuck part 5 and the second chuck part 6 is closed and put in a microwave oven or the like for cooking such as heating. First, the second chuck portion 6 opens due to the pressure of steam or the like generated as the cooked food is heated. With this opening, pressure is applied even between the first chuck portion 5 and the second chuck portion 6, but this pressure is discharged to the outside from the pressure relief portion 7, and it is possible to release a certain pressure or more to the outside. Therefore, the excess pressure of the internal pressure of the bag body 1 is discharged to the outside, and cooking can be performed while applying a constant pressure to the bag body 1.

In the figure, the pressure relief portion 7 is made of a mesh-like member, but is not limited to this and may be provided with, for example, the above-mentioned holes or slits. That is, although it corresponds to all aspects of the present invention, the pressure relief portion 7 may have any structure as long as it can discharge the pressure inside the bag body 1 to the outside, and is not limited to the holes, mesh members, slits, etc. The pressure relief portion 7 having the discharge mechanism of 1 may be used. For example,
It may be a pressure relief portion 7 having not only a simple hole but a discharge hole having a valve for preventing suction from the outside and releasing the internal pressure, or closing the valve by a resilient force of rubber or a spring structure up to a certain pressure. However, the valve may be opened to discharge the internal pressure to the outside only when the internal pressure exceeds a certain level.

With respect to the arrangement of the pressure relief portions 7, in the case of the bag body 1 shown in this figure having the standing bag body, for example, the bottom portion 2 of the square bottom body, the pressure relief portions are formed on both sides in the direction of the opening 4. Not only when the bag 7 is provided, the pressure relief portion 7 may be provided only on one surface of the bag body 1. Alternatively, the pressure relief portion 7 may be provided not on the surface portion of the bag 1 but on the side 3 of the bag 1. For example, when sealing the side 3 of the bag 1 during bag making, the pressure relief portion 7
May be provided on the three side portions. The bag 1 may be provided on both sides of the side 3 along with the surface of the bag 1. FIG. 4 is a sectional view taken along line BB of FIG.
The bag body 1 is closed by the first chuck portion 5 and the second chuck portion 6, and a pressure relief portion 7 is provided between the first chuck portion 5 and the second chuck portion 6 on both sides of the bag body 1. The state provided in the.

Next, FIG. 5 is a view showing an embodiment in which the pressure relief portion 7 is provided only on one surface of the bag body 1. In FIG. 6, the cooked product, which is the content of the bag body 1 in FIG. 3, is overheated,
FIG. 7 is a diagram showing a state in which the pressure is increased, the second chuck portion 6 is pushed open, and the pressure is discharged from the pressure relief portion 7 to the outside. FIG. 7 is a view showing an embodiment according to the present invention in which one surface of the flat-bottomed bag body 1 has a tongue portion 11 having a pressure relief portion 7 in a direction substantially perpendicular to the plane of the bag body. Both ends of the main body of the bag 1 are closed, and the opening of the bag 1 corresponds to the end side 12 of the tongue piece 11. The tongue portion 11 is composed of two sheets, and is connected to the sheets forming one surface of the bag body 1 at one end side portion 14 of the tongue portion, and the inside communicates with the inside of the bag body 1. is doing.

The tongue portion 11 is provided with the first chuck portion 5 and the second chuck portion 6 from the one side 13 to the other side 13 opposite to each other. Both sides can be opened and closed freely. The pressure relief portion 7 is provided between the first chuck portion 5 and the second chuck portion 6 as described above. Therefore, when the contents to be cooked are put in the bag 1 and then overheated by, for example, a microwave oven, the pressure of steam or the like generated from the cooked products is generated not only in the bag 1 but also in the tongue portion 11. The same applies to the inside.
In this case, the second chuck portion 6 of the tongue portion 11 is opened by the pressure in the bag body 1, and the pressure relief portion 7 provided between the first chuck portion 5 and the second chuck portion 6 This pressure above a certain level will be discharged to the outside. The contents can be stored or taken out by opening and closing the first chuck portion 5 and using the opening of the end side portion 12 of the tongue piece portion 11.

Therefore, the bag body 1 is not limited to the one having the first chuck portion 5, the second chuck portion 6, and the pressure relief portion 7 provided on the surface of the bag body 1 itself as shown in FIG. According to the above, for example, a tongue portion may be provided, and the first chuck portion 5, the second chuck portion 6, and the pressure relief portion 7 may be provided in this portion. FIG. 8 shows another embodiment, in which one end 4 of the bag body 1 is closed and the opening 4 is formed at the other end.
In addition, the first chuck portion 5 is provided in the vicinity of the opening 4 so that the bag 1 can be taken in and out. Further, a tongue portion 11 having a pressure relief portion 7 in a direction substantially perpendicular to the plane of the bag body 1 is provided on one surface of the bag body 1, and an end side portion 12 of the tongue piece portion 11 is in a closed state. The inside of the bag 1 and the inside of the tongue piece 11 are communicated with each other by the end portion 14. Such a tongue portion 11 has a second chuck portion 6 from one side 13 thereof to the other side 13 opposite thereto, and between the closed end 12 and the second chuck portion 6. Pressure relief part 7
Is provided.

First chuck part 5 and second chuck part 6
In regard to the chuck strength of the first chuck part 5, the first chuck part 5 is stronger, and the first chuck part 5 can keep the closed state even when the second chuck part 6 receives a pressure to the extent that it opens. It is necessary to be. For example, in the case where the first chuck portion 5 is a chuck structure having a locking protruding side 8 and a locking sandwiching side 9, this locking structure has a locking protruding side 8.
Has a substantially triangular protrusion 81 at the tip end thereof and is sandwiched by the sandwiching piece 91 of the sandwiching side 9 for locking and has a high sandwiching force, whereas the structure of the second chuck portion 6 is Is a structure in which the projection 81 at the tip of the locking projecting side 8 drops the corner of the substantially triangular projecting portion 82 to weaken the clamping force of the locking clamping side 9 with the clamping piece 91. May be.

The substantially triangular protruding portion 81 of the first chuck portion 5 is firmly fitted by the holding piece 91 and cannot be opened unless a certain force is applied, whereas the second chuck portion 6 is substantially triangular. By lowering the angle of the protruding portion 82 of the upper protruding portion 81 to make it into a substantially circular shape or the like, even when sandwiched by the sandwiching piece 91, the catching force is weak and the sandwiching force becomes low, so the opening is performed under a pressure below a certain level. It becomes possible to do. Therefore, when the pressure inside the bag body 1 becomes stronger, the second chuck portion 6 is opened first, and when pressure is applied from this second chuck portion 6 to a portion ahead of the second chuck portion 6, the pressure relief portion 7 is formed inside the bag body 1. The pressure is discharged to the outside from the pressure relief portion 7 since the pressure relief portion 7 communicates with the pressure relief portion 7. This means that the second chuck portion is opened before the pressure for opening the first chuck portion 5 is applied, and the subsequent increase in pressure is discharged from the pressure relief portion 7 to the outside, and the inside of the bag body 1 is kept constant. The first chuck portion 5 can be kept closed under pressure.

FIG. 9 is a view showing one form of the pressure relief portion 7 according to the present invention, and is a view showing a state where one hole is provided in the bag body 1 in the side 3 direction. The present invention is not limited to this, and holes may be provided as pressure relief portions 7 at other locations, and the shape and number of the holes are not limited. At least the internal pressure of the bag 1 can be discharged to the outside, and the shape, number, position, etc. of the holes can be arbitrarily selected in consideration of the internal pressure. FIG. 10 is a diagram showing a state in which a large number of small holes are randomly arranged as the pressure relief portion 7. With such a structure, the pressure inside the bag 1 can be discharged to the outside and the pressure inside the bag 1 can be kept constant.
The number of such holes, the location and size of the holes, the shape of the holes, etc.
It may be appropriately set to maintain the desired pressure.

FIG. 11 shows one side 3 to the other side 3 of the bag body 1.
The pressure relief portion 7 formed of a slit is provided over the upper portion of the bag body 1, and the pressure inside the bag body 1 can be discharged to the outside by making a slit-shaped cut. 12
FIG. 3 is a diagram showing a mesh-shaped pressure relief portion 7. This mesh-shaped pressure relief portion 7 extends from the one side 3 to the other side 3 of the bag body 1 and the first chuck portion 5 From the vicinity of to the vicinity of the second chuck portion 6. In this case as well, the arrangement is not limited to such an arrangement, and it may be provided only in a part or a plurality of small mesh-shaped pressure relief portions 7 may be provided. FIG.
[Fig. 3] is a cross-sectional view showing an example of the first chuck part 5 or the second chuck part 6, and is an enlarged cross-sectional view of the chuck part.
On one surface of the bag body 1, there is a projecting side 8 for locking that projects toward the inside of the bag body 1, and on the other surface, there is a sandwiching side 9 for locking that consists of two sides that project toward the inside of the bag body 1. Is what you are doing.

A substantially arrowhead-shaped projecting portion 81 is provided at the tip end portion of the locking projecting side 8, and a projecting portion 82 which constitutes a barb diagonally in both directions. With respect to the projecting side 8 for locking, the sandwiching side 9 for locking is provided with a sandwiching piece 91 obliquely inward.
Is projected, and the return portion, which is the protruding portion 82 of the protruding portion 81, and the holding piece 91 of the holding side 9 for locking are hooked, thereby making it possible to fit the both tightly. Walls 10 are provided on both sides of the locking protruding side 8 and the locking sandwiching side 9, respectively. FIG. 14 is a cross-sectional view showing another example and is an enlarged view of the chuck portion. This is a mode in which one side of the return portion, which is the protruding portion 82 of the substantially arrowhead-shaped protruding portion 81 of the locking protruding side 8 on the one surface of the bag body 1, is slightly shortened. As a result, the engagement of the retaining side 9 with the retaining piece 91 is slightly weakened in the direction in which the return portion is slightly shortened, and the retention from the other direction remains strong. Therefore, when pressure is applied from a direction in which the return portion of the protruding side 8 for locking is slightly shortened, this catch is released and the bag 1 is easily opened.

The chuck portion having such a structure is arranged, for example, in the first chuck portion 5 with the return portion of the locking protruding side 8 slightly shortened toward the opening 4 of the bag 1. When the bag 1 is provided, it becomes easy to open when the contents are taken in and out of the bag 1 itself, but it becomes a structure that is difficult to open to the pressure from the inside of the bag 1. Further, when the second chuck portion 6 is arranged with the return portion of the locking protruding side 8 being slightly shortened toward the inside of the bag body 1, when the pressure from the inside of the bag body 1 is applied, such a large pressure is applied. The second chuck portion 6 can be opened without receiving it. As described above, the opening of the opening portion 4 of the bag body 1 itself is easy, but when the pressure in the bag body 1 is generated during cooking, the second chuck portion 6 is pushed open according to a certain pressure. The first chuck part 5, which is fitted more tightly than the second chuck part 6, is not pushed open, and the first chuck part 5 remains closed due to the increase in pressure in the bag body 1. With, the contents can be kept in a state where it does not spill outside.

FIG. 15 is an enlarged cross-sectional view of a chuck portion showing another example, but unlike the return portion of the substantially arrowhead-shaped protruding portion 81 of the locking protruding side 8 of FIG. This is a form in which one of the sandwiching pieces 91 on the side 9 is slightly shortened. Even in the case of such a configuration, when the locking protruding side 8 is clamped with the locking clamping side 9, the clamping piece 91 of the clamping clamping side 9 is opened when pressure is applied from a slightly shortened direction. Although it is easy, it is difficult to open against pressure from the opposite direction and a certain force is required. Therefore, in the same manner as described above, in the first chuck portion 5, by disposing the holding piece 91 of the holding side 9 for locking in the direction of the opening 4 of the bag body 1, the slightly shorter side of the holding piece 91 is arranged. While it is easy to open when the contents are taken in and out of itself, the structure is such that it is difficult to open against the pressure from the inside of the bag body 1, and conversely, the second chuck portion 6
The holding piece 9 of the holding side 9 for locking is arranged in the inner direction of the bag body 1.
The second chuck portion 6 can be opened by receiving the pressure from the inside of the bag body 1 by not disposing such a large pressure by arranging the slightly shorter one of the two.

FIG. 16 is an enlarged sectional view showing another embodiment of the chuck section. On one surface of the bag body 1, there is a substantially circular protrusion 81 at the tip of the locking projecting side 8 protruding inward of the bag body 1, and on the other surface, a sandwiching piece 91 that is slanted inwardly. It has a holding side 9 for locking. Therefore, while the gripping piece 91 allows the substantially circular projection 81 to be hooked to close the bag body 1, when the pressure is applied, the hook is released and the chuck portion is pushed open. . FIG. 17 is an enlarged cross-sectional view of another embodiment of the chuck portion showing a state in which a circular holding piece 91 is provided at the tip portion of the holding side 9 for locking. With such a structure, the circular members catch each other to allow the bag body 1 to be closed, but when pressure is applied, the catches are released and the chuck portion is pushed open. FIG. 18 is an enlarged cross-sectional view of another embodiment of the chuck portion in which two locking protruding sides 8 are provided and three locking sandwiching sides 9 are provided. As a result, both can be caught at more places and firmly closed.

For example, when the embodiment shown in FIG. 13 is used for the second chuck section 6 and the chuck section shown in this figure is used for the first chuck section 5, the pressure inside the bag 1 is constant. In this state, the second chuck portion 6 is pushed open, but since the first chuck portion 5 is firmly closed, the second chuck portion 6 is not pushed open with a pressure such that the second chuck portion 6 is pushed open. . Especially when the pressure relief portion 7 has only a small hole or when it is necessary to maintain a high pressure state, even if a certain pressure or more is applied to the bag body 1 itself and a pressure exceeding the capacity of the pressure relief portion 7 is generated. If the first chuck portion 5 is firmly closed, the opening 4 of the bag 1 can be kept closed.

[0041]

Effect of the Invention When the material to be cooked in the bag 1 is heated under pressure in a microwave oven etc., the liquid etc. of the food to be cooked may be scattered into the microwave oven etc. without breaking the bag 1 etc. Therefore, it is possible to provide a bag body that can be cooked extremely easily. 2. The pressure in the bag body 1 during cooking can be adjusted appropriately by the strength of the pressure relief portion 7 and the chuck, so that the bag body having extremely high versatility can be provided. 3. The bag body 1 includes a first chuck portion 5, a second chuck portion 6, and a pressure relief portion 7.
The bag body 1 according to the present invention can be configured by providing
It is possible to provide a bag body that can be heated with pressure in a microwave oven or the like very easily and at low cost.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a diagram showing an embodiment in which the present invention is applied to a bag having a square bottom body.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a sectional view of another embodiment according to the present invention.

FIG. 6 is a cross-sectional view showing an implementation state of the bag body shown in FIG.

FIG. 7 is a diagram showing another embodiment according to the present invention.

FIG. 8 is a diagram showing another embodiment according to the present invention.

FIG. 9 is a diagram showing an embodiment of a pressure relief portion according to the present invention.

FIG. 10 is a view showing another embodiment of the pressure relief portion according to the present invention.

FIG. 11 is a view showing another embodiment of the pressure relief portion according to the present invention.

FIG. 12 is a view showing another embodiment of the pressure relief portion according to the present invention.

FIG. 13 is a cross-sectional view showing an embodiment of a chuck section according to the present invention.

FIG. 14 is a sectional view showing an embodiment of a chuck portion according to the present invention.

FIG. 15 is a cross-sectional view showing an embodiment of a chuck section according to the present invention.

FIG. 16 is a sectional view showing an embodiment of a chuck section according to the present invention.

FIG. 17 is a sectional view showing an embodiment of a chuck portion according to the present invention.

FIG. 18 is a sectional view showing an embodiment of a chuck portion according to the present invention.

[Explanation of symbols]

1 bag 2 Bottom of bag 3 Side of bag 4 Bag opening 5 First chuck part 6 Second chuck part 7 Pressure relief section 8 Projecting side for locking 81 Projection 82 Projection 9 Holding edge for locking 91 clip 10 walls 11 tongue 12 Edge of tongue 13 Side of tongue 14 Edge of tongue

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65D 81/34 B65D 33/01 B65D 33/25

Claims (8)

(57) [Claims] 1. A bag 1 or an opening 4 of the bag 1 which can stand upright.
Has a first chuck portion 5 that opens and closes both sides of the bag body 1 from one side edge 3 of the bag body 1 to the other side edge 3 that faces the bag body 1. 1 has a second chuck portion 6 in the direction of the bottom portion 2 of the bag body 1 from one side edge 3 to the opposite side edge 3, and between the first chuck portion 5 and the second chuck portion 6. Bag 1
Has a pressure relief portion 7 on its surface and closes the first chuck portion 5 and the second chuck portion 6 to pressurize the inside of the bag body to increase the pressure inside the bag body. Is a bag body that releases the internal pressure from the pressure relief portion 7 to the outside, in which the first chuck portion 5 has a locking protruding side 8 and a locking holding side 9.
And a protruding portion 81 of the protruding portion 81 has a corner, and the protruding portion 8 for locking is used for locking. The first chuck portion 5 is closed by sandwiching it by the sandwiching pieces 91 of the sandwiching side 9. The second chuck portion 6 includes the locking protruding side 8 and the locking sandwiching side 9.
Is formed by dropping the corners of the protrusions 82 of the substantially triangular protrusions 81 at the tips of the locking protrusions 8, and the locking protrusions 8 are formed on the locking nipping sides 9. The second chuck part 6 is closed by being held by the holding piece 91, and the holding force of the second chuck part 6 is weaker than that of the first chuck part 5. . 2. A tongue portion 11 having one end side portion 14 which communicates with one surface of the bag body 1 and the other end side portion 12 which has an opening portion at both end portions is opened. The first chuck part 5 has a first chuck part 5 that opens and closes both surfaces of the tongue part 11 from one side 13 of the tongue part 11 to the other side 13 opposite to the opening direction. From the one side 13 of the tongue piece 11 to the other side 13 of the tongue piece 11 in the continuous direction of the bag body 1, the second chuck 6 is provided, and the first chuck 5 and the second chuck Bag 1 between 6
Has a pressure relief portion 7 on its surface and closes the first chuck portion 5 and the second chuck portion 6 to pressurize the inside of the bag body to increase the pressure inside the bag body. Is a bag body that releases the internal pressure from the pressure relief portion 7 to the outside, in which the first chuck portion 5 has a locking protruding side 8 and a locking holding side 9.
And a protruding portion 81 of the protruding portion 81 has a corner, and the protruding portion 8 for locking is used for locking. The first chuck portion 5 is closed by sandwiching it by the sandwiching pieces 91 of the sandwiching side 9. The second chuck portion 6 includes the locking protruding side 8 and the locking sandwiching side 9.
Is formed by dropping the corners of the protrusions 82 of the substantially triangular protrusions 81 at the tips of the locking protrusions 8, and the locking protrusions 8 are formed on the locking nipping sides 9. The second chuck part 6 is closed by being held by the holding piece 91, and the holding force of the second chuck part 6 is weaker than that of the first chuck part 5. . 3. A bag body having a tongue piece portion 11 communicating with the inside of the bag body 1 on one surface of the bag body 1, the tongue piece portion 11 communicating with the bag body 1 at one end side portion 14, A second chuck having a substantially bag-like shape with the other end side portion 12 being closed, and opening and closing both sides of the tongue piece portion 11 from one side edge 13 of the tongue piece portion 11 to the opposite side edge 13 thereof. In addition to having the part 6, a pressure relief part 7 is provided on the surface between the second chuck part 6 and the other end side part 12, and one side 3 of the bag 1 in the direction of the opening 4 of the bag 1 main body. Has a first chuck portion 5 that opens and closes both sides of the bag body 1 from the opposite side edge 3 to the opposite side edge 3, and closes the first chuck portion 5 and the second chuck portion 6 to When the pressure inside the bag increases due to pressurization, the second chuck portion 6 is released to discharge the internal pressure from the pressure relief portion 7 to the outside. , The first chuck unit 5 is projected for engaging sides 8 and engaging a clamping Jihen 9
And a protruding portion 81 of the protruding portion 81 has a corner, and the protruding portion 8 for locking is used for locking. The first chuck portion 5 is closed by sandwiching it by the sandwiching pieces 91 of the sandwiching side 9. The second chuck portion 6 includes the locking protruding side 8 and the locking sandwiching side 9.
Is formed by dropping the corners of the protrusions 82 of the substantially triangular protrusions 81 at the tips of the locking protrusions 8, and the locking protrusions 8 are formed on the locking nipping sides 9. The second chuck part 6 is closed by being held by the holding piece 91, and the holding force of the second chuck part 6 is weaker than that of the first chuck part 5. . 4. A projecting portion 8 forming a barb obliquely in both directions at the tip portion of the locking projecting side 8 of the second chuck portion 6.
2 and a protruding portion 82 located inward of the bag body 1 is formed to be slightly shorter, and the protruding portion 82 of the locking protruding side 8 is formed into a holding pin 9 for locking. The second chuck part 6 is closed by holding the second chuck part 6 by the holding part 91, and the holding force of the second chuck part 6 is weaker than that of the first chuck part 5. Item 4. The bag according to any one of Items 1 to 3. 5. A circular protrusion 81 is provided in place of the substantially triangular protrusion 81 as the protrusion 81 at the tip of the locking protrusion 8 of the second chuck portion 6. The second chuck portion 6 is closed by sandwiching the circular protrusion 81 of the side 8 with the sandwiching piece 91 of the retaining sandwiching side 9, and the sandwiching force of the second chuck portion 6 is first. The bag body according to any one of claims 1 to 3, which is weaker than the chuck portion (5). 6. The holding piece 91 of the holding side 9 for locking of the second chuck portion 6 which is located inward of the bag body 1 is formed to be slightly shorter than the holding piece 91 for holding, and the protruding side 8 for holding is provided. The second chuck portion 6 is closed by sandwiching the protruding portion 81 of the second chuck portion 6 with the sandwiching piece 91 of the retaining sandwiching side 9, and the sandwiching force of the second chuck portion 6 is the first chuck portion 5. The bag body according to any one of claims 1 to 5, which is weaker than the bag body. 7. A circular gripping piece 91 is formed at the tip of the locking gripping side 9 of the second chuck portion 6, and the protrusion 81 of the locking projection side 8 is formed on the locking gripping side 9. The second chuck portion 6 is closed by being sandwiched by the circular sandwiching pieces 91, and the sandwiching force of the second chuck portion 6 is weaker than that of the first chuck portion 5. The bag according to any one of claims 1 to 5. 8. The bag body according to claim 1, wherein the pressure relief portion 7 is composed of a hole, a slit, or a substantially meshed pressure relief portion.