JP6664901B2 - Valve structure, storage bag and film valve - Google Patents

Description

  The present invention provides a heat-fusible film valve having a heat-fusible resin material provided with an internal space, and an openable and closable flow path communicating the internal space and the external space at a valve mounting position. The present invention relates to a valve structure, a storage bag, and a film valve which are fixed by wearing.

Conventionally, in a compression storage bag having a deaeration valve structure as a valve structure, an object to be stored is placed between opposing surfaces of a pair of main films for forming a pair of heat-fusible bags, which are an example of a resin material. An internal space to be stored and an openable and closable entrance for taking in and out of an object to be stored into and from the internal space are formed.
In addition, a plurality of openable and closable flow paths for exhaust (for deaeration) communicating between the internal space and the external space are formed at the valve mounting portion other than the entrance / exit portion at the peripheral portion of the internal space between the two main films. A heat-sealing film valve is fixed by heat-sealing (for example, see Patent Document 1).
In the case of Patent Document 1, a film valve having the same length as the width of the bottom of the compression storage bag is fixed to the bottom of the compression storage bag by heat fusion, and a plurality of film valves in the longitudinal direction of the film valve are arranged. A channel is formed at each location.

The film valve is composed of a pair of self-adhesive, flexible, valve-constituting films that close each flow path by close contact in a superposed state.
The superposed two-valve constituent films are arranged along the width-direction side edges of the respective flow passages arranged at a plurality of positions in the longitudinal direction thereof, and each of the flow passages between the two valve constituent films and the remaining space other than the flow passages And are integrally fixed by a first heat-sealing portion which forms a partition in a non-ventilated state.

  Then, the two-valve constituent films of the film valve manufactured in the above-described valve manufacturing work process are overlapped and arranged at the valve mounting portion between the opposing surfaces of the pair of bag-forming main films in the next wrapping bag making work process. The two main films and the two-valve constituent film in the superposed state cross one location near the internal space in each flow path of the two-valve constituent film, and other than the flow path between the two-valve constituent films. In the remaining space, the inner space and the outer space of the two main films are integrally fixed by a single second heat-sealing portion which forms a non-ventilated state.

  At the time of the wrapping bag manufacturing operation process for integrating the two main films and the two valve component films, the two valve components are arranged so that the flow path between the two valve component films is not interrupted by the second heat-sealed portion traversing the film. A heat-resistant paint that constitutes a heat-fusion-inhibiting layer for preventing heat-sealing between the two valve-constituting films is printed on the flow path forming portion between the opposing surfaces of the constituent films.

Japanese Patent No. 4792035

In the conventional compression storage bag, first, each of the flow paths between the two valve component films is formed by the first heat-sealed portions along the widthwise side edges of the respective flow channels arranged at a plurality of locations in the longitudinal direction of the two valve component films. It is necessary to form a valve and a remaining space other than the flow path in a non-ventilated state, and at the same time, execute a valve manufacturing operation step of integrally fixing the two valve component films to each other.
Thereafter, the two-valve constituent film of the manufactured film valve is overlapped and arranged at the valve mounting portion between the opposing surfaces of the pair of main films for the bag construction, and both valves of the two main films and the film valve in this overlapped arrangement state With the second heat-fused portion traversing each flow path, the constituent films are brought into a non-vented state between the internal space and the external space of the two main films in the remaining space other than the flow path between the two valve constituent films. It is necessary to execute a wrapping bag manufacturing operation step of integrally fixing in a partitioned state.
Therefore, it is necessary to separately perform the valve manufacturing operation process and the wrapping bag manufacturing operation process, and thus the number of operation processes is large and complicated, and there is a disadvantage that productivity is lowered and manufacturing cost is increased.

  Considering the production of the film valve, when the two valve component films are superimposed, each of the flow components between the two valve component films is placed along the widthwise side edges of each channel disposed at a plurality of locations in the longitudinal direction thereof. It is necessary to integrally fix the passage and the remaining space other than the passage by a heat-sealing portion that forms a non-ventilated state. Moreover, when the width of the flow path port on the outer space side in the flow path is configured to be smaller than the width of the flow path port on the inner space side, the shape of both side edges in the width direction of the flow path is complicated and complicated. In addition, the heat sealing apparatus is complicated, and there is a disadvantage that the productivity of the film valve is reduced and the production cost is increased.

  In view of this situation, a main problem of the present invention is to provide a valve structure, a storage bag, and a film valve capable of improving productivity and reducing manufacturing costs by a rational heat fusion process. is there.

A first characteristic configuration according to the present invention resides in that a heat-fusible resin material having an internal space is provided with an openable and closable flow path communicating the internal space and the external space at a valve mounting portion of the resin material. A valve structure in which the film valve is fixed by heat fusion,
The film valve is provided with a pair of self-adhesive flexible pair of valve component film that closes the flow path by close contact in a stacked state,
In at least one portion corresponding to heat fusion of at least one of the opposing surfaces of the opposed surfaces of the two-valve constituent films at the portion corresponding to the formation of the flow path, heat fusion inhibition for preventing heat fusion of the two-valve constituent films is prevented. A layer is formed,
Between the opposing surfaces of the valve mounting portion of the resin material, the two valve component films forming the heat fusion inhibiting layer are arranged in an overlapping manner, and the valve attaching portion of the resin material in the overlapping arrangement state and the Opposing surfaces with both valve component films, and opposing surfaces of the two valve component films, traverse the two valve component films in a state of passing through a plurality of locations in the flow channel axial direction of the flow path, and, A plurality of heat-melting sections that partition in a sealed state between a remaining space portion other than the flow path and the internal space between the opposing surfaces of the two-valve constituent films and between the remaining space portion and the external space. By being fixed at the bonding portion, the two-valve configuration film is configured to the film valve having a non-heat-sealed portion of the flow passage at a non-heat-sealed portion corresponding to a crossing of the plurality of heat-sealed portions, Further, the front portion between the two valve constituent films The remaining space and said channel is in a point that is communicating formed formed between a plurality of heat-sealing portion.

According to the above configuration, the two-valve constituent films for forming the flow path are superposed and arranged between the opposed surfaces of the heat-fusible resin material provided with the internal space and the valve mounting portion, and are in this superposed arrangement state. The opposite surfaces of the resin material where the valve is attached and the two valve component films are integrally fixed (adhered) by a heat-sealed portion crossing the flow path.
At this time, at least a portion corresponding to the heat-sealed portion of at least one of the opposing surfaces of the opposed surfaces of the two-valve constituent films corresponding to the flow path formation has a heat for preventing heat-sealing between the two-valve constituent films. Since the fusion inhibiting layer is formed, the flow passage itself is not interrupted by the heat fusion portion crossing the flow passage.

Therefore, by simply heat-sealing the valve mounting portion of the resin material in the polymerization arrangement state and the two valve constituent films in a state of crossing the flow path, the internal space and the internal space in the remaining space other than the flow path between the two valve constituent films. At the same time that the space between the external space and the external space can be partitioned in a sealed state, the two-valve constituent film can function only as a film valve having a passage corresponding to a portion of the flow passage that is transverse to the heat-sealed portion.
Therefore, for example, the fluid in the internal space of the resin material or the fluid supplied from the external space side flows in while expanding the flow path opening of the flow path between the two valve component films, and the fluid in the flow path When flowing into the external space or the internal space, the flow path forming portions on the opposing surfaces of the two valve constituent films are in close contact with each other, and the flow path is closed.

  Therefore, although the valve function film alone does not exhibit the valve function, the predetermined valve function is reliably exhibited only by overlapping and thermally fusing the valve mounting portion of the resin material and the valve structure film as described above. Since the valve structure can be manufactured, the productivity can be improved and the manufacturing cost can be reduced as compared with the conventional valve structure.

Further, by simply fixing the valve mounting portion of the resin material in the overlapped arrangement state and the two valve constituent films with a plurality of heat-sealed portions in a state of crossing the flow path, the remaining space other than the flow path between the two valve constituent films is provided. In the above, the space between the residual space and the internal space and the space between the residual space and the external space can be partitioned in a sealed state.
Then, due to the presence of the heat-fusion inhibiting layer, of the cross-sections corresponding to the plurality of heat-fusion portions in the flow path between the two valve component films, the cross-section of the heat-fusion portion closest to the internal space is not located. A film valve is formed in which the heat-sealed portion serves as an inner channel opening, and a non-heat-sealed portion of a crossing portion of the heat-sealed portion located closest to the outer space serves as an outer channel opening.

In addition, the both side edges in the flow channel width direction at locations corresponding to the flow channel formation on the opposing surfaces of the two-valve constituent films, and both side edges located between the plurality of heat-sealed portions are not heat-sealed. In this non-adhesive portion, the remaining space between the two valve component films located between the plurality of heat-sealed portions and the flow path are in communication.
Therefore, for example, the fluid in the internal space of the resin material or the fluid supplied from the external space side flows in while expanding the flow path opening on the inner side or the outer side of the flow path between the two valve constituent films, and flows. Although a part of the fluid that has flowed into the passage flows into the remaining space, the main flow of the fluid flows out of the flow passage outside or inside the flow passage into the external space or the internal space.
Then, when the fluid in the flow path between the two valve constituent films and the fluid in the remaining space part flows out to the external space or the internal space, the flow path forming portions on the opposing surfaces of the two valve constituent films are in close contact with each other and the flow path is closed. .
According to a second characteristic configuration of the present invention, in the valve structure having the first characteristic configuration, the flow path and the remaining space are formed at a plurality of locations in the flow path width direction between the two valve constituent films. And the plurality of flow paths are formed so as to communicate with each other via the remaining space.

  A third characteristic configuration according to the present invention is that, in the valve structure having the first or second characteristic configuration, the surface of the heat-fusion-inhibiting layer is configured to be weakly tacky.

  According to the above configuration, while reliably preventing the flow path itself from being interrupted by the plurality of heat fusion parts crossing the flow path with the heat fusion inhibition layer, the surface of the heat fusion inhibition layer Due to the weak adhesiveness, while maintaining the opening / closing function as a film valve, it is possible to suppress a decrease in the adhesion of the two-valve constituent films at the site where the heat-fusion-inhibiting layer is formed, thereby improving the sealing property of the film valve. .

A fourth characteristic configuration according to the present invention is an internal space for accommodating an object to be stored and disposed between the facing surfaces of the superposed heat-fusible main films and an object for taking the object into and out of the internal space. An openable doorway is formed,
A heat-sealing film having an openable and closable flow path for exhaust that communicates the internal space and the external space at a valve mounting portion other than the entrance / exit portion at the peripheral portion of the internal space between the two main films. A storage bag in which the valve is fixed by heat fusion,
The film valve is provided with a pair of self-adhesive flexible pair of valve component film that closes the flow path by close contact in a stacked state,
In at least one portion corresponding to heat fusion of at least one of the opposing surfaces of the opposed surfaces of the two-valve constituent films at the portion corresponding to the formation of the flow path, heat fusion inhibition for preventing heat fusion of the two-valve constituent films is prevented. A layer is formed,
Between the opposing surfaces of the valve attachment portion of the main film, the two-valve constituent films forming the heat-fusion inhibiting layer are arranged in a stack, and the valve attachment portion of the main film in the overlap arrangement state and the Opposing surfaces with both valve component films, and opposing surfaces of the two valve component films, traverse the two valve component films in a state of passing through a plurality of locations in the flow channel axial direction of the flow path, and, A plurality of heat-melting sections that partition in a sealed state between a remaining space portion other than the flow path and the internal space between the opposing surfaces of the two-valve constituent films and between the remaining space portion and the external space. By being fixed at the bonding portion, the two-valve configuration film is configured to the film valve having a non-heat-sealed portion of the flow passage at a non-heat-sealed portion corresponding to a crossing of the plurality of heat-sealed portions, Further, between the two valve constituent films The remaining space part takes formed between the plurality of thermal fusion portion and said channel is in a point that is communicating formed.

According to the above configuration, the two valve component films for forming the flow path are superposed and arranged between the opposed surfaces of the heat-fusible main film provided with the internal space and the valve mounting portion, and in this superposed configuration state. The opposing surfaces of the main film where the valve is mounted and the two valve component films are integrally fixed (adhered) by a heat-sealed portion crossing the flow path.
At this time, at least a portion corresponding to the heat-sealed portion of at least one of the opposing surfaces of the opposed surfaces of the two-valve constituent films corresponding to the flow path formation has a heat for preventing heat-sealing between the two-valve constituent films. Since the fusion inhibiting layer is formed, the flow passage itself is not interrupted by the heat fusion portion crossing the flow passage.
Therefore, by simply heat-sealing the valve mounting portion of the main film in the superposed arrangement state and the two valve component films in a state crossing the flow path, the internal space and the internal space in the remaining space other than the flow path between the two valve component films. At the same time that the space between the external space and the external space can be partitioned in a sealed state, the two-valve constituent film can function only as a film valve having a passage corresponding to a portion of the flow passage that is transverse to the heat-sealed portion.
Therefore, for example, the fluid in the internal space of the main film or the fluid supplied from the external space side flows in while expanding the flow path opening of the flow path between the two valve component films, and the fluid in the flow path When flowing into the external space or the internal space, the flow path forming portions on the opposing surfaces of the two valve constituent films are in close contact with each other, and the flow path is closed.

  Accordingly, although the valve function film alone does not exhibit the valve function, the valve mounting portion of the main film and the valve structure film are overlapped and arranged as described above, and the predetermined valve function is reliably exhibited only by heat fusion. Since the valve structure can be manufactured, the productivity can be improved and the manufacturing cost can be reduced as compared with the conventional valve structure.

Further, by simply fixing the valve mounting portion of the main film in the overlapped arrangement state and the two valve constituent films with a plurality of heat-sealing portions in a state of crossing the flow path, the remaining space other than the flow path between the two valve constituent films is provided. In the above, the space between the residual space and the internal space and the space between the residual space and the external space can be partitioned in a sealed state.
Then, due to the presence of the heat-fusion inhibiting layer, of the cross-sections corresponding to the plurality of heat-fusion portions in the flow path between the two valve component films, the cross-section of the heat-fusion portion closest to the internal space is not located. A film valve is formed in which the heat-sealed portion serves as an inner channel opening, and a non-heat-sealed portion of a crossing portion of the heat-sealed portion located closest to the outer space serves as an outer channel opening.

In addition, the both side edges in the flow channel width direction at locations corresponding to the flow channel formation on the opposing surfaces of the two-valve constituent films, and both side edges located between the plurality of heat-sealed portions are not heat-sealed. In this non-adhesive portion, the remaining space between the two valve component films located between the plurality of heat-sealed portions and the flow path are in communication.
Therefore, for example, the fluid in the internal space of the main film or the fluid supplied from the external space side flows in while expanding the flow path opening on the inner side or the outer side of the flow path between the two valve constituent films, and flows. Although a part of the fluid that has flowed into the passage flows into the remaining space, the main flow of the fluid flows out of the flow passage outside or inside the flow passage into the external space or the internal space.
Then, when the fluid in the flow path between the two valve constituent films and the fluid in the remaining space part flows out to the external space or the internal space, the flow path forming portions on the opposing surfaces of the two valve constituent films are in close contact with each other and the flow path is closed. .

A fifth characteristic configuration according to the present invention is the storage bag having the fourth characteristic configuration, wherein the outlet side portion of the flow path is branched and formed into a plurality of divided flow path portions in the flow path width direction. On the point.

In the storage bag, for example, if the opening area (opening width) at the inlet side portion of the flow passage is configured to be equal to the opening area (opening width) at the outlet side portion of the flow passage, the internal space between the two main films is formed. When the gas inside is discharged to the external space, the gas flowing into the flow path from the internal space can be smoothly discharged with low resistance.
On the other hand, since the outlet side portion of the flow passage is largely opened, when the wide open outlet side portion is instantaneously contracted by the negative pressure in the flow passage, the flow is weakened by the weak adhesive force of the opposing surfaces of the two valve component films. The outlet side portion may be held in a state of being deformed and contracted into a cross shape or the like with a gap, and if such a tunneling phenomenon occurs, there is a disadvantage that the valve function is lost.

  For this reason, conventionally, the opening area at the outlet side of the flow path is made smaller than the opening area at the inlet side of the flow path, and the opened outlet side part is instantaneously caused by the negative pressure of the flow path. Although the occurrence of the tunneling phenomenon at the time of contraction is suppressed, there is a disadvantage that exhausting the gas in the internal space requires a large amount of labor and labor.

Therefore, as described above, the opening area of each of the divided flow paths at the time of gas discharge is reduced by forming the outlet side portion of the flow path into a plurality of divided flow paths in the width direction of the flow path. Since the opening area can be made smaller than the opening area at the inlet side portion, it is possible to suppress the occurrence of a tunneling phenomenon when each of the opened divided flow path portions is instantaneously contracted by the negative pressure of the flow path.
In addition, since the sum of the opening areas of the plurality of divided flow paths is the total opening area on the outlet side of the flow path, the gas in the internal space can be smoothly discharged with little labor.

A sixth characteristic configuration according to the present invention is the storage bag having the fifth characteristic configuration, wherein a total opening area of the plurality of divided flow path portions is substantially equal to an opening area of an inflow side portion of the flow path. It is the same or larger.

  According to the above configuration, while suppressing the occurrence of a tunneling phenomenon when each of the opened divided flow path portions contracts instantaneously due to the negative pressure of the flow path, the gas in the internal space of both main films is smoothly reduced with less labor. Can be discharged.

A seventh characteristic configuration according to the present invention is the storage bag provided with any one of the fourth to sixth characteristic configurations, wherein an inner edge facing the internal space in the double-valve constituent film is formed in the internal space. Along with projecting closer to the internal space side than the heat fusion portion located closest to the side, a plurality of locations of the heat fusion portion located closest to the internal space side, The point is that a non-heat-sealed portion which is opened only at the opening is formed.

According to the above configuration, the inner edge of the self-adhesive flexible double-valve constituent film protrudes toward the inner space side from the heat-sealed portion and is in a free end state. The tightness of the edges can enhance the sealing of the film valve.
Nevertheless, for example, when the storage bag is pressed to discharge the gas in the internal space to the external space, the two main films are formed with the heat-sealed portion located closest to the internal space as a substantially starting point. The gas invades into the non-heat-sealed portions formed at a plurality of portions of the heat-sealed portion on the inner space side which spreads to the side away from the inner edge portion and which fixes the main film and the valve component film to the internal space. Then, the portions corresponding to the non-heat-sealed portions of the two main films expand and deform, so that the inner edges of the two valve component films are deformed in a wavy shape by being pulled by the expansion deformation, and the inner ends of the two valve component films are deformed. Gaps occur between the edges. The gas flows into the flow path through this gap, and the flow path is fully opened, so that the gas in the internal space of both main films can be smoothly discharged to the external space.

An eighth characteristic configuration according to the present invention is the storage bag provided with any one of the fourth to seventh characteristic configurations, wherein a plurality of locations along the flow path width direction between the two valve component films are provided in the storage bag. A flow path and the remaining space are formed, and the plurality of flow paths are formed to communicate with each other via the remaining space.

  According to the above configuration, for example, when the gas in the internal space is discharged to the external space by pressing the storage bag, even if the gas inflow distribution to the plurality of flow paths varies, the flow path with a large inflow amount Can be distributed to the flow path with a small amount of inflow through the residual space portion, so that the gas in the internal space can be smoothly discharged to the external space.

A ninth characteristic configuration according to the present invention is the film valve used for the storage bag according to any one of the fourth to eighth characteristic configurations,
At a plurality of locations in the flow channel width direction between the two valve constituent films, the flow channel and the remaining space are formed,
A heat-fusion inhibiting layer that prevents heat fusion between the two-valve constituent films is formed in the entire area corresponding to the formation of each of the flow paths on at least one facing surface of the two-valve constituent film,
The two-valve constituent film traverses the two-valve constituent film in a state of passing through a plurality of locations in the flow path axial direction of each of the flow paths, and the remaining portion other than the plurality of flow paths between the two-valve constituent films. The space portion is fixed by a plurality of heat-sealing portions that partition in an airtight state, and a non- heat-sealing portion corresponding to a crossing of the heat- sealing portion in each of the flow passages is configured as a flow passage opening, and the plurality of flow passages are formed. The road is formed so as to communicate with the remaining space.

According to the above-described configuration, a film valve having a passage opening corresponding to a portion of the flow passage that traverses the heat-sealed portion is manufactured simply by fixing the superposed two-valve constituent films at the heat-sealed portion traversing the flow passage. can do.
Therefore, as in the related art, the two-valve constituent films overlapped with each other, along the widthwise side edges of the respective flow paths arranged at a plurality of locations in the longitudinal direction thereof, with each flow path between the two valve constituent films. To improve the productivity of the film valve and reduce the production cost as compared with a case where the remaining space portion other than the flow path is integrally fixed by a heat-sealed portion that forms a non-ventilated state. And simplification of the heat sealing device can be achieved at the same time.

1 is a perspective view of a storage bag with a valve structure according to a first embodiment. Exploded perspective view of a storage bag with a valve structure according to a first embodiment. The front view of the principal part of the storage bag with a valve structure of 1st Embodiment FIG. 3 is an enlarged sectional view of a main part at the time of sealing and degassing along line IV-IV in FIG. 3. FIG. 3 is an enlarged sectional view of a main part at the time of sealing and degassing along line VV in FIG. 3. FIG. 3 is an enlarged sectional view of a main part at the time of sealing and degassing along the line VI-VI in FIG. 3. FIG. 3 is an enlarged sectional view of a main part at the time of sealing and degassing along the line VII-VII in FIG. 3. The longitudinal perspective view of the principal part at the time of sealing of the storage bag with a valve structure of 1st Embodiment. The longitudinal perspective view of the principal part at the time of the start of deaeration of the storage bag with a valve structure of 1st Embodiment. Schematic diagram of production of the film valve of the first embodiment Front view of a main part of a storage bag with a valve structure according to a second embodiment. The front view of the principal part of the storage bag with a valve structure of 3rd Embodiment. Front view of the film valve of the fourth embodiment Exploded perspective view of a storage bag using a film valve according to a fourth embodiment.

[First Embodiment]
FIG. 1 shows a storage bag B with a valve structure for storing a compressible and flexible storage object A such as clothes and blankets in a compressed state. The storage bag B is made of a synthetic resin (for example, polyethylene) main film (for example, made of polyethylene) for two bags formed in a rectangular shape and having flexibility and heat-sealing properties (heat sealing properties). One example) 1 is overlapped, and an internal space 2 for accommodating the storage object A is formed between the facing surfaces of the two main films 1 in the superposed state. Is formed with an openable / closable entrance / exit portion 3 for taking in / out the object A from / to the internal space 2.

As shown in FIGS. 1 and 2, the entrance / exit portion 3 of the main films 1 is made of a heat-sealable synthetic resin (for example, made of polyethylene) which is an example of a closed opening / closing means capable of closing the entrance / exit portion 3. Is fixed by heat fusion (heat sealing).
The sealing chuck 4 includes a first heat-fusible synthetic resin tape body 4A having two convex male fitting parts 4a and a double male fitting part of the first tape body 4A. A heat-fusible synthetic resin second tape body 4B provided with two concave female fitting portions 4b which are detachably fitted in a detachable manner with respect to 4a.

Each length L1 of the first tape body 4A and the second tape body 4B of the sealing chuck 4 is the same as the width W1 of both main films 1, and the upper edge and the lower edge of one of the first tape bodies 4A. The part is air-tightly fixed to one of the opposing surfaces of the entrance and exit part 3 of both main films 1 by a narrow band-like heat-sealing part (heat sealing part) Ha over the entire width thereof.
In addition, the upper edge and the lower edge of the other second tape body 4B also have a narrow band-like heat-sealing portion (a heat-sealing portion) extending over the entire width of the other of the opposing surfaces of the entrance and exit portions 3 of both main films 1. It is fixed in an airtight state by a seal portion Ha.

  Of the peripheral portions of the internal space 2 in the two main films 1, the lateral side edges on both sides in the width direction are fixed in an airtight state by a narrow band-like heat-sealed portion (heat seal portion) Hb over the entire vertical width thereof. Have been. This band-shaped heat-sealed portion Hb is shown in a mesh pattern in FIGS.

  As shown in FIGS. 1 to 9, in the peripheral portion of the internal space 2 in the two main films 1, a valve mounting portion other than the entrance / exit portion 3, specifically, a lower side opposed to the entrance / exit portion 3 in the vertical width direction. (Bottom side) At the valve mounting portion on the side edge, a heat-fusing property (heat) that forms an openable and closable flow path (air passage) 5 for exhaust (for degassing) communicating the internal space 2 and the external space. A film valve V made of a synthetic resin (for example, made of polyethylene) having a sealing property is fixed in a hermetic state by heat fusion (heat sealing).

  The film valve V is composed of a pair of band-shaped valve component films 6 that are more flexible, self-adhesive, and heat-fusible than the two main films 1, and are formed between opposing surfaces of the superposed two valve component films 6. The flow path 5 is configured to be closed in an airtight state by close contact between flow path forming portions on the opposing surfaces of the two valve component films 6.

One or a plurality of flow paths 5 may be formed between the two valve constituent films 6, but in the present embodiment, the flow path 5 is formed at six locations at predetermined intervals in the width direction of the main film 1 (flow path width direction). The flow path 5 is formed in.
As shown in FIGS. 3 and 8, each flow path 5 has a wide flow path section from the inner edge 6 a on the internal space 2 side of the two-valve configuration film 6 to a specific position on the center side in the flow axis direction. 5A, a narrow channel portion 5B is formed from the outer edge of the double-valve configuration film 6 on the outer space side to a specific position on the center side in the channel axis direction.

As shown in FIGS. 2 and 3, heat fusion between the flow path forming portions on the opposing surfaces of the two valve component films 6 is performed on the entire area corresponding to the flow channel formation on one of the opposing surfaces of the two valve component films 6. A transparent or colored heat-resistant paint (heat-resistant ink, silicone oil, or the like) that forms a heat-adhesion-inhibiting layer 7 that prevents the heat-fusion is printed. The entire area corresponding to the flow path formation on which the weakly adhesive heat-resistant paint is printed is indicated by a gray dot pattern in FIGS. 1 to 3, 8 and 9.
Due to the presence of the heat fusion inhibiting layer 7, it is possible to reliably prevent the flow path 5 itself from being interrupted by heat fusion (heat sealing). Moreover, since the surface of the heat-fusion inhibiting layer 7 is configured to be weakly tacky, the opening and closing function of the film valve V is maintained while the two-valve constituent film 6 is formed at the position where the heat-fusion inhibiting layer 7 is formed. It is possible to increase the hermeticity (airtightness) of the film valve V while suppressing a decrease in the adhesion.

As shown in FIGS. 2 and 3, the two-valve constituent film 6 is configured to have the same length L2 as the width W1 of the two main films 1, and is provided at the valve mounting portion on the lower side edge between the two main films 1. The polymerization is arranged.
The two main films 1 and the two valve constituent films 6 arranged in an overlapped manner traverse the entire width of the two main films 1 in a state where they pass through two places in the flow path axial direction in each flow path 5, and A partition between the opposing surfaces of the constituent films 6 between the remaining space 8 other than the flow path 5 and the internal space 2 and between the remaining space 8 and the external space in a sealed state (airtight state). The books are fixed by heat-sealed portions (heat-sealed portions) Hc and Hd.
The heat-sealed portions Hc and Hd are also displayed in a mesh pattern in FIGS.

  The heat-sealed portion Hc on the inner side closest to the inner space 2 side of the two-valve constituent film 6 crosses the position near the end of the wide flow path portion 5A of the flow path 5 and is closest to the outer space side. The outer heat-sealed portion Hd located crosses an intermediate position in the narrow flow passage portion 5B of the flow passage 5 that is offset toward the wide flow passage portion 5A.

  As shown in FIGS. 3, 4, and 8, the presence of the heat-fusion-inhibiting layer 7 corresponds to the two heat-fusion portions Hc and Hd in each flow path 5 between the two valve component films 6. Among the crossing portions, the non-heat-sealed portion of the crossing portion of the inner side heat-sealed portion Hc becomes the inflow port (flow path port) 5a on the inner side, and the crossing portion of the outer side heat-sealed portion Hd. The non-heat-sealed portion becomes an outflow port (flow path port) 5b on the outer side.

  Further, as shown in FIG. 6 and FIG. 8, two heat-sealing portions are provided at the side edges of both flow channel contours in the flow channel width direction at locations corresponding to the flow channel formation on the opposing surfaces of the two valve component films 6. Both flow path contour side edge portions 5c located between Hc and Hd are non-adhesive portions that are not heat-sealed (heat-sealed). The remaining space 8 between the two valve-constituting films 6 located between the heat-sealed portions Hc and Hd is in communication with the flow path 5.

  In this embodiment, five wide remaining spaces 8 located between the adjacent flow channels 5 and two narrow remaining spaces located outside the outermost flow channel 5 in the width direction of the main film 1. Each of the flow paths 5 is formed so as to communicate with the remaining space portions 8 located on both sides thereof. In other words, all the flow paths 5 are formed so as to communicate with each other via the remaining space 8.

For example, when the storage object A is stored in the internal space 2 between the two main films 1 and the storage bag B in which the sealing chuck 4 of the entrance 3 is closed is pressed, the two main films 1 are pressed. The gas (air) in the internal space 2 between the two flows in while expanding the inflow port 5a on the inner side of each flow path 5 between the two valve component films 6, and flows into each flow path 5 Although the gas flows into each of the remaining spaces 8, the main flow of the gas is discharged from the outlet 5 b on the outer side of each flow path 5 to the external space.
Thereafter, when the gas in each flow path 5 and each remaining space 8 between the two valve constituent films 6 is exhausted to the external space, and the internal space 2 between the two main films 1 becomes negative pressure, the two valves The flow path forming portions on the opposing surface of the constituent film 6 are in close contact with each other, and each flow path 5 is closed in an airtight state. That is, the heat sealing of the two heat-sealed portions Hc and Hd serves as a valve function for opening and closing each flow path 5 for the first time.

  Therefore, although the valve structure film 6 alone does not exhibit the valve function, the storage structure having the predetermined valve function can be obtained simply by heat-sealing the valve structure film 6 and the main films 1 by overlapping them as described above. Since the bag B can be manufactured, the productivity of the storage bag B can be improved and the manufacturing cost can be reduced.

  Further, when the gas (air) in the internal space 2 is discharged to the external space by pressing the storage bag B, even if the gas inflow distribution to the plurality of flow paths 5 varies, the flow path with a large inflow amount The gas in the internal space 2 can be smoothly discharged from the internal space 2 to the external space because the gas can be distributed from the internal space 2 to the flow path 5 having a small inflow amount through the residual space portion 8.

  As shown in FIGS. 8 and 9, the inner edge 6 a facing the internal space 2 of the two-valve constituent film 6 is larger than the inner side heat-sealed portion Hc closest to the internal space 2. At a plurality of locations in the longitudinal direction of the heat-sealed portion Hc on the inner side, a concave non-heat-sealed portion 9 that opens only to the inner space 2 side is formed. I have.

  Since the inner edge portion 6a of the self-adhesive and flexible double-valve configuration film 6 is in a free end state in which the inner edge portion 6a protrudes toward the internal space 2 side from the inner side heat-sealed portion Hc, the double-valve configuration. The tightness between the inner edge portions 6a of the film 6 can enhance the sealing property of the film valve V.

However, when the gas in the internal space 2 is discharged to the external space by pressing the storage bag B, the two main films 1 start from the heat-sealed portion Hc on the inner side and start from the inner side of the two-valve constituent film 6. The non-heat-sealed portions 9 which are spread at a side separated from the edge portion 6a and are formed at a plurality of locations on the inner side heat-sealed portions Hc where the main film 1 and the valve component film 6 are fixed. Gas invades into the inside and the portions corresponding to the non-heat-fused portions 9 of both main films 1 expand and deform.
The inner edge portions 6a of the two valve component films 6 are deformed in a wavy shape by being pulled by the expansion deformation, and a gap is generated between the inner edge portions 6a of the two valve component films 6. The gas flows into the flow path 5 through this gap, and the flow path 5 is fully opened, so that the gas in the internal space 2 of both main films 1 can be smoothly discharged to the external space.

FIG. 10 shows an example of a production line for the film valve V. In this production line, two long films 11 and 12 having a width corresponding to a plurality of times (eight times in this embodiment) the flow path axis length h of the two-valve constituent film 6 are used.
Then, while continuously transporting one of the long films 11, a weakly adhesive heat-resistant paint constituting the heat-fusion-inhibiting layer 7 is coated on the upper surface of the long film 11 at a position corresponding to the formation of each of the eight channels. 11 are printed in a continuous state in the width direction, and sensor marks 13 for detecting a cutting position are printed every predetermined number (three in this embodiment) of the heat-fusing inhibition layers 7 adjacent in the transport direction. .
The two long films 11 and 12 are superimposed on the upper surface of one of the long films 11 on which the heat fusion inhibiting layer 7 and the sensor mark 13 are printed, while continuously transporting the other long film 12. Are cut and separated along the transport direction in units of the flow path axis length h of the film valve V, and a plurality of (eight in the present embodiment) continuous films 14 for valve construction in which the film valves V are continuous are manufactured.

  In the above-described embodiment, when the gas in the internal space 2 of the storage bag B is discharged to the external space, the exhaust method of pressing the storage bag B from the outer surface is adopted. An exhaust method may be adopted in which a deaeration nozzle connected to a deaeration device such as an intake pump is inserted from an external space to exhaust gas in the internal space 2 of the storage bag B to the external space.

  In the above-described embodiment, the sealing chuck 4 that can be thermally fused to the entrance 3 of both main films 1 is used as the sealing opening / closing unit that opens / closes the entrance 3 of both main films 1. A sealing chuck may be used, and a holding device for holding and sealing the entrance and exit portions 3 of the main films 1 may be used.

  Furthermore, in the above-described embodiment, the main film 1 and the valve constituting film 6 constituting the storage bag B are formed of a single-layer synthetic resin film of a thermosetting resin such as polyethylene, polypropylene, and nylon. You may comprise from the laminated film which laminates the above-mentioned film base materials.

[Second embodiment]
FIG. 11 shows another embodiment of the valve structure of the storage bag B. In this valve structure, a plurality of (three in this embodiment) divided narrow flow passage portions 5E are provided in the flow passage width direction in the flow passage width direction in the flow passage 5 formed between the opposed surfaces of the two valve constituent films 6. And the total opening area of the plurality of divided narrow flow passage portions 5E is substantially the same as or larger than the opening area of the wide flow passage portion 5D at the inlet side portion of the flow passage 5. It is configured.

In this embodiment as well, as in the first embodiment described above, the entire area of the flow path forming portion on one of the opposed surfaces of the two-valve constituent films 6 includes A weakly adherent heat-resistant paint constituting the heat-seal inhibiting layer 7 for preventing heat-seal of each other is printed.
In FIG. 11, the entire area corresponding to the flow path formation where the weak adhesive heat-resistant paint is printed is indicated by a gray dot pattern.

The two-valve constituent film 6 is arranged at the valve mounting portion on the lower side edge between the two main films 1, and the two main films 1 and the two-valve constituent film 6, which are arranged so as to overlap each other, flow through each flow path 5. Between the inner space 2 and the remaining space 8 other than the flow path 5 between the opposing surfaces of the two valve component films 6 while traversing the entire width of the two main films 1 while passing through two locations in the direction of the road axis. And two heat-sealed portions (heat-sealed portions) Hc and Hd that partition the remaining space 8 and the external space in a sealed state (airtight state), respectively.
The heat-sealed portions Hc and Hd are shown in a mesh pattern in FIG.

  Then, due to the presence of the heat fusion inhibiting layer 7, of the cross sections corresponding to the two heat fusion parts Hc and Hd in each of the flow paths 5 between the two valve constituent films 6, the wide flow path on the inflow side part The non-heat-sealed portion of the heat-sealed portion Hc crossing the portion 5D becomes the inflow port (flow port) 5a on the inner side, and traverses the plurality of divided narrow flow channels 5E at the flow-out side portion. The non-heat-sealed portion of the crossing portion of the heat-sealed portion Hd becomes a plurality of outflow ports (flow path ports) 5b on the outer side.

As described above, by forming the outlet side portion of the flow path 5 into a plurality of divided narrow flow paths 5E in the flow width direction, each of the plurality of divided narrow flow paths 5E at the time of gas discharge is formed. Since the opening area can be made smaller than the opening area of the single wide flow path portion 5D at the inlet side portion of the flow channel 5, each of the opened divided narrow flow channel portions 5E is formed within the flow channel 5. It is possible to suppress the occurrence of the tunneling phenomenon at the time of instantaneous contraction due to the negative pressure.
However, since the sum of the opening areas of the plurality of divided narrow flow passages 5E is substantially equal to or larger than the opening area of the wide flow passage 5D at the inlet side portion of the flow passage 5, The gas in the internal space 2 can be discharged smoothly with little labor.

Also, depending on the width of the main films 1 (the size of the storage bag B), the size of the flow path 5 formed between the two valve component films 6 and the formation pitch, etc., as shown in FIG. May be overlapped and arranged on a belt-like heat-sealed portion (shown by a mesh pattern) Hb that fixes the side edges on both sides in the width direction of both main films 1.
This occurs when a plurality of types of storage bags B having different widths are manufactured while continuously transporting the long main film 1 and the double valve component film 6 wound in a roll shape.
At this time, a side edge that overlaps with the flow path 5 on the side of the outermost edge is formed by the heat-fusion-inhibiting layer 7 formed over the entire area corresponding to the flow path formation on at least one of the opposing surfaces of the two valve component films 6. The overlapping portion between the two valve component films 6 in the heat-sealed portion Hb at the edge is in a non-adhered state, and the internal space 2 and the external space between the two main films 1 are short-circuited via the non-adhered portion. There is a disadvantage that the valve function is lost.
In this case, with respect to the two main films 1 and the two valve component films 6, a flow path 5 on the central side having a valve function and a flow path on the outermost peripheral side without a valve function are provided from the lower side edge thereof. 5 and a lateral heat fusion through the upper side of the flow path 5 on the side of the outermost rim having no valve function and reaching the heat fusion portion Hb of the side rim. A heat-sealed portion (heat-sealed portion) He including the portion Heb is applied.
The distance W2 between the vertical direction heat-sealed portion Hea of the heat-sealed portion He and the heat-sealed portion Hb at the side edge is larger than the maximum width W3 of the flow path 5 and at the side edge. The distance W4 between the heat-sealed portion Hb and the side edge of the flow path 5 on the center side is smaller than the distance W4.
In the above-described second embodiment, when the two main films 1 and the two valve component films 6 arranged in a stack are fixed by two or more heat-sealing portions (heat-sealing portions), the two main films 1 are positioned closest to the outlet. The heat-sealed portion to be formed may be arranged along the lower edge of both main films 1.
Since other configurations are the same as those described in the first embodiment, the same components are denoted by the same reference numerals as those in the first embodiment, and description thereof will be omitted.

[Third embodiment]
FIG. 12 shows an improvement of the valve structure of the storage bag B of the above-described second embodiment.
In the valve structure of the storage bag B shown in FIG. 11, since the plurality of divided narrow flow passage portions 5E of the flow passage 5 are in a posture parallel to the sides of the two main films 1, as described above, the one In the case where the portions are overlapped on the band-shaped heat-sealed portion Hb for fixing the side edges on both sides in the width direction of both main films 1, the comparison of the non-adhered portions at the side edges of both main films 1 is performed. It is conceivable that the target area is turned up and there is no problem in function, but there is a possibility that the commercial value of the finished storage bag B in appearance is impaired.
As a countermeasure against this, in the valve structure of the storage bag B of the third embodiment shown in FIG. 12, the heat-fused portion Hb at the side edge is configured to be wider than the two heat-fused portions Hc and Hd. At the same time, a plurality of divided narrow flow passage portions 5E at the outlet side portion are formed to be inclined by a set angle with respect to the wide flow passage portion 5D at the inlet side portion. Thus, the adjacent portions of the plurality of divided narrow flow passages 5E are heat-sealed by the band-shaped heat-sealed portions Hb that fix the side edges on both sides in the width direction of the main films 1 to each other. In addition, the non-adhesion portions at the side edges of both main films 1 are dispersed, and the non-adhesion portions at the side edges of both main films 1 can be suppressed from turning over.

Further, in the valve structure of the storage bag B shown in FIG. 12, the heat-sealed portion (heat-sealed portion) He is provided with a lateral heat-sealed portion Heb passing above the channel 5 on the side of the outermost edge. Among the plurality of divided narrow flow passages 5E of the flow passage 5 on the side of the outermost edge, a vertical passage passing through the width of the divided narrow flow passage 5E located on the innermost side in the horizontal width direction at the same inclination angle. A heat-sealed portion (heat-sealed portion) He including the directional heat-sealed portion Hea is applied.
The distance W5 between the vertical direction heat-sealed portion Hea of the heat-sealed portion He and the heat-sealed portion Hb at the side edge is smaller than the maximum width W6 of the flow path 5 and at the outermost edge. The width W7 is larger than the distance W7 from the outer edge of the outlet 5b of the narrower narrow channel portion 5E to the inner edge of the wide channel portion 5D at the center in the width direction.
In this case, in the arrangement shown in FIG. 12, the inner space 2 between the two main films 1 and the outer space are prevented from communicating with each other in a short-circuited manner through the non-adhesive portion, and the inner space 2 of the storage bag B is also prevented. The gas in the space 2 can flow in from the right-hand corner of the inlet-side edge in the wide channel portion 5D of the channel 5 on the side of the outermost edge, so that the flow path 5 on the side of the outermost edge is formed. Valve function can be utilized.

In FIG. 12, the left side of the main film 1 in the width direction will be described as a heat-sealed portion He, and the right side in the width direction will not be described. He appears in the left-right symmetrical shape with the left-side heat-sealed portion He, as in the second embodiment.
In addition, since other configurations in the third embodiment are the same as the configurations described in the first embodiment and the second embodiment, the same components are provided in the same locations as in the first embodiment and the second embodiment. A number is added and the description is omitted.

[Fourth embodiment]
FIG. 13 shows another embodiment of the film valve V in which a pair of superposed self-adhesive flexible valve-constituting films 6 are heat-sealed with a flow path 5 formed between the opposing surfaces thereof. Show.
The flow path 5 of the film valve V is configured so as to be closed in an airtight state by close contact between flow path forming portions on the opposing surfaces of the two valve component films 6.
The flow path 5 formed between the two valve constituent films 6 may be either one or a plurality of flow paths, but in this embodiment, the flow path 5 is formed at a plurality of locations at predetermined intervals in the width direction of the main film 1 (flow path width direction). The flow path 5 is formed in.

  Each flow path 5 is formed as a wide flow path portion 5A from the inner edge 6a on the inner space 2 side of the two-valve constituent film 6 to a specific position on the center side in the flow path axial direction. The narrow flow path portion 5B is configured from the outer edge on the space side to a specific position on the center side in the flow axis direction.

A heat-fusion-inhibiting layer 7 for preventing heat fusion between flow-path-forming portions on the opposing surfaces of the two-valve constituent film 6 is provided over the entire area corresponding to the flow-path formation on one of the opposing surfaces of the two-valve constituent film 6. Is printed with a transparent or colored heat-resistant paint having low tackiness.
Due to the presence of the heat fusion inhibiting layer 7, it is possible to reliably prevent the flow path 5 itself from being interrupted by heat fusion (heat sealing). Moreover, since the surface of the heat-fusion inhibiting layer 7 is configured to be weakly tacky, the opening and closing function of the film valve V is maintained while the two-valve constituent film 6 is formed at the position where the heat-fusion inhibiting layer 7 is formed. It is possible to increase the hermeticity (airtightness) of the film valve V while suppressing a decrease in the adhesion.

  The two-valve constituent film 6 is fixed at a heat-sealed portion Hd that traverses the flow path 5 and partitions the remaining space portion 8 other than the flow path 5 between the two valve constituent films 6 in an airtight state. The portion corresponding to the crossing of the heat-fused portion Hd in FIG. 5 is formed in the outlet 5b.

Then, in order to manufacture the storage bag B using the film valve V configured as described above, as shown in FIG. 14, between the two main films (an example of a resin material) 1 for the bag configuration forming the internal space 2. The film valve V is overlapped and arranged at the valve mounting position on the lower side (bottom side) side edge of the film.
Next, a description will be given with reference to FIGS. 3 to 8 of the first embodiment. The two main films 1 and the two valve component films 6 arranged in a stack are thermally fused to the film valves V in the respective flow paths 5. And crossing the entire width of both main films 1 while passing through a portion deviated toward the internal space 2 side from the portion Hd, and the remaining space portion 8 other than the flow path 5 between the opposing surfaces of the two valve component films 6. It is fixed by a single heat-sealed portion Hc which partitions off the internal space 2 in a sealed state (airtight state).

  The heat-sealed portion Hc on the inner side closest to the inner space 2 side of the two-valve constituent film 6 crosses the position near the end of the wide flow path portion 5A of the flow path 5 and is closest to the outer space side. The outer heat-sealed portion Hd located crosses an intermediate position in the narrow flow passage portion 5B of the flow passage 5 that is offset toward the wide flow passage portion 5A.

Then, due to the presence of the heat fusion inhibiting layer 7, of the cross sections corresponding to the two heat fusion parts Hc and Hd in each of the flow paths 5 between the two valve constituent films 6, the heat fusion parts on the inner side are formed. The non-heat-fused portion of the cross section of Hc becomes the inflow port (flow path port) 5a on the inner side, and the non-heat-fusion portion of the cross section of the outer heat-fused portion Hd constituting the film valve V is It becomes the outflow port (flow path port) 5b on the outer side.
Note that the same components as those described in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted.

[Other embodiments]
(1) In each of the above-described embodiments, the heat-fusion-inhibiting layer 7 is formed in the entire area corresponding to the flow path formation on one of the opposing surfaces of the two-valve constituent films 6. The heat fusion inhibiting layer 7 may be formed in the entire area corresponding to the flow path formation in the above.
Further, the heat-fusion-inhibiting layer 7 may be formed only at a cross-section corresponding to the heat-fusion portions Hc and Hd at at least one of the opposing surfaces of the two-valve constituent films 6 corresponding to the passage formation.

(2) In each of the above-described embodiments, the two main films 1 and the two valve component films 6 which are superposed and arranged are connected to the two heat-sealing portions (heat portions) crossing two portions of the flow channel 5 in the flow channel axial direction. The seal portion is fixed by Hc and Hd, but may be fixed by three or more heat-sealed portions crossing three or more points in the flow channel axial direction in the flow channel 5, and further, the flow channel axis in the flow channel 5 It may be fixed by one heat-sealed portion crossing one location in the direction.
When the two main films 1 and the two valve-constituting films 6 arranged in a stack are fixed by one heat-sealing portion, the width of the heat-sealing portion is set to be wider than that of a plurality of heat-sealing portions.

(3) In each of the embodiments described above, the storage bag B provided with the entrance / exit portion 3 has been described. However, the present invention is not limited to this. For example, a resin material such as the main film 1 that forms the internal space 2 is made of a container. A heat-fusible film valve V, which is formed into a shape and has an openable and closable flow path communicating the internal space 2 and the external space at a valve mounting portion serving as an opening of the container-shaped resin material. It may be fixed by heat fusion.
In this case, a liquid such as a beverage or soy sauce can be injected into the internal space 2 from the flow path 5 of the film valve V, or a gas such as helium gas for balloons can be injected.

  (4) In each of the above-described embodiments, the heat-fusion inhibiting layer 7 is made of a heat-resistant paint, but may be made of a non-heat-fusible material such as a silicon film or a heat-resistant material.

1 resin material (main film)
Reference Signs List 2 Internal space 3 Inlet / outlet part 5 Flow path 5D Inlet-side part 5E Outlet-side part 5e Divided flow path part 6 Valve constituent film 6a Inner edge part 7 Heat fusion inhibition layer 8 Remaining space part 9 Non-heat fusion part Hc Heat fusion part Hd Heat fusion part V Film valve

Claims (9)

A heat-fusible film valve having an openable and closable flow path communicating the internal space and the external space is fixed to the valve mounting portion of the heat-fusible resin material having the internal space by heat fusion. Valve structure,
The film valve is provided with a pair of self-adhesive flexible pair of valve component film that closes the flow path by close contact in a stacked state,
In at least one portion corresponding to heat fusion of at least one of the opposing surfaces of the opposed surfaces of the two-valve constituent films at the portion corresponding to the formation of the flow path, heat fusion inhibition for preventing heat fusion of the two-valve constituent films is prevented. A layer is formed,
Between the opposing surfaces of the valve mounting portion of the resin material, the two valve component films forming the heat fusion inhibiting layer are arranged in an overlapping manner, and the valve attaching portion of the resin material in the overlapping arrangement state and the Opposing surfaces with both valve component films, and opposing surfaces of the two valve component films, traverse the two valve component films in a state of passing through a plurality of locations in the flow channel axial direction of the flow path, and, A plurality of heat-melting sections that partition in a sealed state between a remaining space portion other than the flow path and the internal space between the opposing surfaces of the two-valve constituent films and between the remaining space portion and the external space. By being fixed at the bonding portion, the two-valve configuration film is configured to the film valve having a non-heat-sealed portion of the flow passage at a non-heat-sealed portion corresponding to a crossing of the plurality of heat-sealed portions, Further, the front portion between the two valve constituent films Valve structure in which the residual space formed between the plurality of thermal fusion portion and said flow passage is communicated formed.   The flow path and the remaining space portion are formed at a plurality of locations in the flow path width direction between the two valve constituent films, and the plurality of flow paths are formed to communicate with each other via the remaining space portion. 2. The valve structure according to 1.   3. The valve structure according to claim 1, wherein the surface of the heat fusion inhibition layer is configured to be weakly tacky. An internal space for storing the object to be stored and an openable and closable entrance for taking the object into and out of the internal space are formed between the facing surfaces of the superposed heat-fusible main films. Along with
A heat-sealing film having an openable and closable flow path for exhaust that communicates the internal space and the external space at a valve mounting portion other than the entrance / exit portion at the peripheral portion of the internal space between the two main films. A storage bag in which the valve is fixed by heat fusion,
The film valve is provided with a pair of self-adhesive flexible pair of valve component film that closes the flow path by close contact in a stacked state,
In at least one portion corresponding to heat fusion of at least one of the opposing surfaces of the opposed surfaces of the two-valve constituent films at the portion corresponding to the formation of the flow path, heat fusion inhibition for preventing heat fusion of the two-valve constituent films is prevented. A layer is formed,
Between the opposing surfaces of the valve attachment portion of the main film, the two-valve constituent films forming the heat-fusion inhibiting layer are arranged in a stack, and the valve attachment portion of the main film in the overlap arrangement state and the Opposing surfaces with both valve component films, and opposing surfaces of the two valve component films, traverse the two valve component films in a state of passing through a plurality of locations in the flow channel axial direction of the flow path, and, A plurality of heat-melting sections that partition in a sealed state between a remaining space portion other than the flow path and the internal space between the opposing surfaces of the two-valve constituent films and between the remaining space portion and the external space. By being fixed at the bonding portion, the two-valve configuration film is configured to the film valve having a non-heat-sealed portion of the flow passage at a non-heat-sealed portion corresponding to a crossing of the plurality of heat-sealed portions, Further, between the two valve constituent films Storage bag the remaining space kicking formed between the plurality of thermal fusion portion and said flow passage is communicated formed.   The storage bag according to claim 4, wherein the outlet side portion of the flow path is formed to be branched into a plurality of divided flow path portions in the flow path width direction.   The storage bag according to claim 5, wherein a total opening area of the plurality of divided flow path portions is substantially equal to or larger than an opening area of an inflow-side portion of the flow path.   The inner edge facing the internal space in the double-valve configuration film is arranged so as to protrude more toward the internal space than the heat-sealed portion located closest to the internal space side, and on the internal space side. The storage bag according to any one of claims 4 to 6, wherein a non-heat-sealed portion that opens only to the inner space side is formed at a plurality of positions of the heat-sealed portion closest to the storage space.   At a plurality of locations along the flow channel width direction between the two valve constituent films, the flow channel and the remaining space portion are formed, and the plurality of flow channels are formed to communicate with each other via the remaining space portion. The storage bag according to any one of claims 4 to 7. It is the film valve used for the storage bag according to any one of claims 4 to 8,
At a plurality of locations in the flow channel width direction between the two valve constituent films, the flow channel and the remaining space are formed,
A heat-fusion inhibiting layer that prevents heat fusion between the two-valve constituent films is formed in the entire area corresponding to the formation of each of the flow paths on at least one facing surface of the two-valve constituent film,
The opposing surfaces of the two-valve constituent films traverse the two-valve constituent films in a state where they pass through a plurality of locations in the flow path axial direction of the respective flow paths, and the plurality of flow paths between the two-valve constituent films. The remaining space portion other than the road is fixed at a plurality of heat-sealing portions that partition in an airtight state, and a non- heat-sealing portion corresponding to a crossing of the heat- sealing portion in each of the flow passages is configured as a flow passage opening, A film valve, wherein the plurality of flow paths are formed to communicate with each other via the remaining space.

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