JP2009196695A - Sealed bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealed bag capable of keeping an air-tight sealed state positively for a long period of time. <P>SOLUTION: A valve 3 includes a valve body 4, a ball valve member 5, and a screw cap 6. The valve body 4 has a tapered flow passage 8 tapered toward an inside part of a bag body and a fixing port 27 arranged near a large-diameter end of the tapered flow passage 8 and communicating with the tapered flow passage 8. The ball valve member 5 is arranged in the tapered flow passage 8 in such a way that it can be advanced to or retracted from the inside part of the bag body and can close the tapered flow passage 8. The screw cap 6 has a stopper part 9 inserted into the fixing port 27 and abutting against the ball valve member 5, a spring part 29 for biasing the stopper part 9 toward the ball valve member 5, and a connecting port 31 communicating with the tapered flow passage 8 and at the same time the screw cap 6 is fixed to the fixing port 27. The peripheral surface of the tapered flow passage 8 forming a large-diameter part is formed with a groove 10 for use in guiding fluid in a small-diameter part of the tapered flow passage 8 toward the screw cap 6. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sealed bag that can store and compress articles such as futons, clothes, and foodstuffs in a negative pressure state.

  2. Description of the Related Art Conventionally, there are sealed bags that can accommodate various items such as food and can be compressed to be compact. For example, International Publication No. 2005/090179 (Patent Document 1) describes a sealed bag as shown in FIG. This sealed bag includes a plastic or polyethylene bag main body 301 and a slider 350 slidably attached to the edge of the bag main body 301, and an opening 307 is provided at the edge of the bag main body 301. Is provided.

  The opening 307 is provided with a pair of interlock mechanisms 302. When the interlock mechanisms 302 are engaged with each other, the opening 307 is closed and sealed. When the engagement between the interlock mechanisms 302 is released, the opening 307 is opened, and for example, food can be taken in and out through the opening 307. Such engagement and release of the interlock mechanism 302 are performed by sliding the slider 350.

  As shown in FIG. 16, the slider 350 is provided with a flow path 308 that communicates the inside of the bag body 301 with the outside of the bag body 301. The diameter of the flow path 308 is constant from the inner side of the bag body 301 to the outer side of the bag body 301. That is, the flow path forming surface that forms the flow path 308 is cylindrical.

  A spherical ball valve body 305 is disposed in the flow path 308. Thereby, the ball valve body 305 prevents the outside air from entering the bag body 301 through the flow path 308 after the air in the bag body 301 is drawn out of the bag body 301.

  The ball valve body 305 can move forward and backward toward the inside of the bag body 301, and can make a line contact with a valve seat provided on the flow path forming surface to close the flow path 308.

  However, in the above-described conventional sealing bag, since the seal by the ball valve body 305 is a line seal by line contact, the sealing performance of the ball valve body 305 is low.

  Therefore, even if the air inside the bag body 301 is pulled out of the bag body 301 and the bag body 301 is compressed, if a long time elapses, the bag body 301 enters the bag body 301 from between the valve seat and the ball valve body 305. Outside air enters and the compression of the bag body 301 is released.

That is, the conventional sealed bag has a problem that the airtight state of the bag body 301 cannot be maintained for a long time.
International Publication No. 2005/090179 Pamphlet

  Then, the subject of this invention is providing the sealing bag which can maintain an airtight state reliably over a long period of time.

In order to solve the above problems, the sealed bag of the present invention is
A bag body made of a material that does not allow fluid to pass through, and has an opening for taking in and out the contents;
A sealing mechanism provided in the bag body, capable of opening and closing the opening, and sealing the opening when closed;
A valve attached to the bag body for communicating the inside of the bag body and the outside of the bag body;
The above valve
A valve body having a tapered flow path tapered toward the inside of the bag body, and an attachment port provided near the large-diameter end of the tapered flow path and communicating with the tapered flow path;
A valve body that is disposed in the tapered flow path so as to be movable forward and backward toward the inner side of the bag body, and capable of closing the tapered flow path,
A stopper portion that is inserted into the attachment port and contacts the valve body; an elastic body that urges the stopper portion toward the valve body; and a connection port that communicates with the tapered flow path. With a cap attached to the mouth,
A groove for guiding the fluid in the small diameter portion of the tapered flow path to the cap side is formed on the peripheral surface forming the large diameter portion of the tapered flow path.

  When the sealed bag having the above-described configuration is used, first, the contents are put into the bag body through the opening, and then the opening is closed and sealed by a sealing mechanism.

  Next, for example, after connecting the suction port of the air suction pump to the connection port of the cap, the air suction pump is operated. Then, the valve body receives the suction force of the air suction pump and moves in a direction away from the bag body against the biasing force of the elastic body. As a result, the small-diameter end portion of the tapered channel and the large-diameter end portion of the tapered channel communicate with each other through the groove on the circumferential surface of the tapered channel, so that the air in the bag body is in the circumferential surface of the tapered channel. It flows into the air suction pump through the groove. That is, the air in the bag body is sucked into the air suction pump.

  Subsequently, when the air in the bag body is continuously sucked, the pressure in the bag body becomes negative, and the bag body is compressed together with the contents by the pressure of the outside air.

  Finally, when the air suction pump is stopped, the valve body advances toward the small-diameter end portion side of the tapered channel by the negative pressure in the bag body and the urging force of the elastic body to close the tapered channel. At this time, the stopper portion is in contact with the valve body, and the elastic body urges the stopper portion toward the valve body.

  Therefore, the closed state of the tapered channel is prevented by the urging force of the elastic body, and the closed state of the tapered channel can be maintained, so that the tapered channel can be reliably sealed for a long period of time. .

  Moreover, when the said stored item is foodstuffs, for example, the bag body in a compressed state is put on a microwave oven, and vapor | steam may generate | occur | produce from foodstuffs. As described above, when steam is generated from the food product and the air pressure in the bag body rises and becomes excessively high, the valve body moves away from the bag body against the urging force of the elastic body. As a result, the small-diameter end portion of the tapered channel and the large-diameter end portion of the tapered channel communicate with each other through the groove on the peripheral surface of the tapered channel, so that the vapor in the bag body passes through the tapered channel and the groove. Can be released to the outside.

  Therefore, since the air pressure in the bag body is reduced, an excessively high air pressure is not applied to the sealing mechanism, and it is possible to prevent the opening portion from being sealed by the sealing mechanism.

  When the air pressure in the bag main body is lowered, the valve body advances toward the small diameter end portion side of the tapered flow path by the biasing force of the elastic body, so that the tapered flow path is closed again by the valve body.

In one embodiment of the sealed bag,
The cap can be attached to and detached from the attachment port.

  According to the sealing bag of the said embodiment, since the said cap can be attached or detached with respect to an attachment port, a cap can be removed from an attachment port. Therefore, maintenance of the cap and the valve body is facilitated.

  Further, the valve body can be taken out from the tapered flow path by removing the cap from the attachment port. Therefore, maintenance of the valve body is easy.

  According to the sealing bag of the present invention, since the elastic body urges the stopper portion toward the valve body, the stopper portion comes into contact with the valve body, and the valve body is disposed on the circumferential surface forming the tapered channel. Since it presses, a taper channel can be reliably sealed over a long period of time.

  Further, even if steam is generated from the housing portion in the bag body, the valve body moves in a direction away from the bag body against the biasing force of the elastic body if the air pressure in the bag body becomes excessively high. Therefore, the small-diameter end portion of the tapered channel and the large-diameter end portion of the tapered channel communicate with each other through the groove on the peripheral surface of the tapered channel. Therefore, the vapor in the bag body can be discharged to the outside through the groove on the peripheral surface of the tapered channel, and as a result, an excessively high atmospheric pressure in the bag body is not applied to the sealing mechanism, and the opening portion by the sealing mechanism Can be prevented from being released.

  Further, when the air pressure in the bag body is lowered, the valve body moves toward the small diameter end portion side of the tapered flow path by the biasing force of the elastic body, so that the tapered flow path can be closed again by the valve body.

  Hereinafter, the sealing bag of the present invention will be described in detail with reference to the illustrated embodiments.

  FIG. 1 is a schematic front view of a sealed bag according to an embodiment of the present invention.

  As shown in FIG. 1, the sealed bag includes, for example, a bag body 1 having an opening 7 for taking in and out food, a fastener 2 provided at an edge of the bag body 1, and the bag body 1. And a valve 3 attached to the edge. In addition, the said foodstuff is an example of a containment. The fastener 2 is an example of a sealing mechanism.

  The bag body 1 includes a transparent bag front side sheet 11 and a transparent bag back side sheet 12 facing the bag front side sheet 11. And the said bag front side sheet | seat 11 and the bag back side sheet | seat 12 each consist of the material (for example, plastic film) which a fluid cannot pass. Further, most of the edge portion of the bag front side sheet 11 is thermocompression bonded to the edge portion of the bag back side sheet 12, and a part thereof is thermocompression bonded to the valve 3. In the opening 7, the edge of the bag front side sheet 11 is not thermocompression bonded to the edge of the bag back side sheet 12. Moreover, it is desirable that the material through which the fluid cannot pass is at least an air barrier material.

  On the inner surface of the bag back side sheet 12, irregularities 13 (partially shown) are formed over substantially the entire surface. The unevenness 13 includes a plurality of substantially circular protrusions in plan view, and is formed by a process such as embossing. By having such irregularities 13, even if the bag front side sheet 11 and the bag back side sheet 12 come into contact with each other, a gap is secured between the bag front side sheet 11 and the bag back side sheet 12, A fluid such as air or liquid can be drawn out of the bag body 1 from the valve 3. That is, the unevenness 13 prevents the fluid from being confined in the bag body 1 and prevents the fluid from being drawn out from the bag body 1 from being incomplete.

  The fastener 2 can open and close the opening 7 of the bag body 1 and seals the opening 7 when closed. Although not shown, the fastener 2 has a male fastener member and a female fastener member facing the male fastener member.

  As materials for the male fastener member and the female fastener member, plastic having appropriate flexibility and elasticity is used. The male fastener member can be fitted to the female fastener member or removed from the female fastener member. By fitting the male fastener member to the female fastener member, the opening 7 of the bag body 1 is closed, and by pulling out the male fastener member from the female fastener member, the opening 7 of the bag body 1 is opened.

  FIG. 2 is a schematic view of the valve 3 as seen from the front. FIG. 3 is a schematic view of the valve 3 as viewed from the side.

  The valve 3 is for drawing the fluid in the bag body 1 out of the bag body 1. As shown in FIGS. 2 and 3, the valve 3 can be attached to and detached from a valve body 4, a substantially spherical ball valve body 5 accommodated in the valve body 4, and a mounting port 27 of the valve body 4. And a screw-type cap 6 attached to (see FIGS. 4 and 5). The ball valve body 5 is an example of a valve body, and the screw type cap 6 is an example of a cap.

  The valve body 4 is obtained by molding a hard plastic such as PE (polyethylene) or PP (polypropylene).

  The screw-type cap 6 has a substantially cylindrical connection port 31 communicating with the tapered flow path 8 and a substantially cup-shaped screwing portion 17 formed integrally with the connection port 31.

  4 is a schematic sectional view taken along line F4-F4 of FIG. FIG. 5 is a schematic cross-sectional view taken along line F5-F5 in FIG.

  As shown in FIGS. 4 and 5, the valve body 4 is provided with a tapered flow path 8 that tapers toward the lower side (inside the bag body 1) in the figure. In the vicinity of the large-diameter end portion of the tapered channel 8, an attachment port 27 that communicates with the tapered channel 8 is provided. On the other hand, a tapered channel 28 that is tapered toward the lower side in the figure is connected to the small-diameter end of the tapered channel 8.

  Each peripheral surface forming the tapered flow path 8 and the thick flow path 28 has a substantially conical shape. More specifically, the taper angle α of the surface forming the tapered flow path 8 is set to 15 ° to 22 ° (for example, 18 °). On the other hand, the taper angle β of the surface forming the thick channel 28 is set to 18 ° to 35 ° (for example, 23 °).

  A ball valve element 5 is disposed in the tapered flow path 8 so as to be movable forward and backward toward the inner side of the bag body 1. The ball valve body 5 is in contact with the circumferential surface forming the tapered flow path 8 over the entire circumference in the state shown by the solid line in FIGS. The ball valve body 5 is formed of a material that is softer and more elastic than the material of the valve body 4. Specifically, the ball valve body 5 is formed of silicon rubber, nitrile rubber, elastomer, synthetic rubber, biodegradable resin, synthetic resin (for example, polyisobutylene) or the like.

  Four grooves 10 are provided on the peripheral surface forming the large diameter portion of the tapered flow path 8 with a phase of 90 °. Each groove 10 extends along the advancing and retracting direction of the ball valve body 5. Further, the end of each groove 10 on the bag body 1 side is located closer to the screw-type cap 6 than the contact portion between the peripheral surface of the tapered flow path 8 and the ball valve body 5. That is, when the bag body 1 is not deaerated, the grooves 10 are provided so that the sealing by the ball valve body 5 is not adversely affected.

  A threaded portion 33 is integrally formed on the outer peripheral surface of the mounting port 27 of the valve body 4. The screw cap 6 is attached to the attachment port 27 so as to be able to advance and retreat toward the small diameter end portion side of the tapered channel 8.

  The screw cap 6 is formed of a material that is softer and more elastic than the material of the valve body 4. Specifically, the screw cap 6 is made of soft plastic or the like. The screw-type cap 6 includes two spring portions 29 inserted into the attachment port 27 and an annular stopper portion 9 that is connected to the lower end of each spring portion 29 in the drawing and contacts the ball valve body 5. (Refer to FIGS. 8 to 12). The spring portion 29 is an example of an elastic body.

  FIG. 6 is a schematic view of the valve 3 as viewed from above. FIG. 7 is a schematic view of the valve 3 as viewed from below.

  As shown in FIG. 6, the outer peripheral surface of the screwing portion 17 of the screw-type cap 6 is a circumferential surface. As shown in FIG. 2, the diameter of the outer peripheral surface of the screwing portion 17 is smaller than the width W of the lower portion of the valve body 4 in the drawing. Moreover, the diameter of the outer peripheral surface of the screwing portion 17 is larger than the thickness T of the lower portion of the valve body 4 in the drawing, as shown in FIG.

  As shown in FIG. 7, the valve body 4 has a shape in which the thickness gradually decreases from the central portion toward both side portions. Two blind holes 15 are formed in the valve body 4, and the two blind holes 15 open at the lower end surface of the valve body 4 (the end surface opposite to the attachment port 27 side). In FIG. 7, illustration of the stopper portion 9 and the spring portion 29 is omitted.

  FIG. 8 is a schematic view of the screw cap 6 as viewed from the front. FIG. 9 is a schematic cross-sectional view taken along line F9-F9 in FIG.

  The lower end of the spring portion 29 in the figure protrudes from the lower end of the screwing portion 17 as shown in FIGS. Further, a groove 34 is provided on the inner peripheral surface of the threaded portion 17, and the groove 34 is threadedly engaged with the threaded portion 33 of the mounting port 27 of the valve body 4 (FIGS. 4, 5, 10, 11). reference).

  When the screw type cap 6 is attached to the valve body 4, a part of the screw portion 33 is screwed into the groove 34, and then the screw type cap 6 is forwardly rotated to advance toward the valve body 4. Thereby, the stopper portion 9 enters the tapered flow path 8 and comes into contact with the ball valve body 5. Further, since the screw cap 6 can be separated from the valve body 4, the valve body 4 and the screw cap 6 can be easily washed.

  When removing the screw type cap 6 from the valve body 4, the screw type cap 6 is rotated forward and moved away from the valve body 4. Thereby, the contact of the stopper portion 9 with the ball valve body 5 is released, so that the ball valve body 5 can be taken out from the tapered flow path 8 and easily cleaned.

  FIG. 10 is a schematic view of the screw-type cap 6 as viewed obliquely from below. FIG. 11 is another schematic view of the screw type cap 6 as viewed obliquely from below. FIG. 12 is a schematic view of the screw type cap 6 as viewed obliquely from above.

  Each spring portion 29 of the screw-type cap 6 extends in a spiral shape. Moreover, as shown in FIGS. 10-12, the unevenness | corrugation for making the screw type cap 6 rotate easily is provided in the outer peripheral surface of the screwing part 17 of the said screw type cap 6. FIG. In the drawings other than FIGS. 10 to 12, the illustration of the unevenness is omitted.

  When the sealed bag having the above-described configuration is used, first, after the food product is put into the bag body 1 through the opening 7 shown in FIG. 1, the opening 2 is closed and sealed by the fastener 2.

  Next, for example, after the suction port of an air suction pump (not shown) is connected to the connection port 31 of the screw-type cap 6, the air suction pump is operated. Then, the ball valve body 5 shown in FIG. 4 receives the suction force of the air suction pump, moves in a direction away from the bag body 1 against the biasing force of the spring portion 29, and is indicated by a two-dot chain line in FIG. Located in place. As a result, the small-diameter end portion of the tapered flow path 8 and the large-diameter end portion of the tapered flow path 8 communicate with each other through the groove 10, so that the air in the bag body 1 is indicated by the arrow in FIG. Then, it passes out of the bag body 1 through the groove 10 on the peripheral surface of the tapered flow path 8. That is, the air in the bag body 1 is sucked into the air suction pump.

  Subsequently, when the air in the bag body 1 is continuously sucked, the bag body 1 has a negative pressure, and the bag body 1 is compressed together with the food by the pressure of the outside air.

  Finally, when the air suction pump is stopped, the ball valve body 5 advances toward the small-diameter end portion side of the tapered flow path 8 by the negative pressure in the bag body 1 and the biasing force of the spring portion 29, and the tapered flow. Road 8 is closed. That is, the ball valve body 5 contacts over the entire circumference of the circumferential surface of the tapered flow path 8. At this time, the stopper portion 9 contacts the ball valve body 5, and the spring portion 29 urges the stopper portion 9 toward the ball valve body 5.

  Therefore, the closed state of the tapered flow path 8 can be prevented by the urging force of the spring portion 29. As a result, since the closed state of the tapered channel 8 can be maintained, the tapered channel 8 can be reliably sealed for a long period of time.

  Further, the compressed bag body 1 is put in a microwave oven, and steam may be generated from the food in the bag body 1. Thus, when vapor | steam generate | occur | produces from the said foodstuff and the atmospheric | air pressure in the bag main body 1 rises and becomes high too much, the ball valve body 5 will resist the urging | biasing force of the spring part 29, and is the direction which leaves | separates from the bag main body 1. And is located at a place indicated by a two-dot chain line in FIG. As a result, the small-diameter end portion of the tapered flow path 8 and the large-diameter end portion of the tapered flow path 8 communicate with each other through the groove 10, so that the vapor in the bag body 1 is passed through the tapered flow path 8 and the groove 10. Can be released to the outside.

  Therefore, since the air pressure in the bag body 1 is lowered, an excessively high air pressure is not applied to the fastener 2, and it is possible to prevent the opening 7 from being sealed by the fastener 2.

  Further, when the air pressure in the bag body 1 decreases, the ball valve body 5 moves toward the small diameter end portion side of the tapered flow path 8 by the biasing force of the spring portion 29. Close again.

  Further, since the ball valve body 5 is made of a material that is softer and more elastic than the material of the valve body 4, the ball valve body 5 can be elastically deformed and pushed into the small diameter end side of the tapered flow path 8. it can. As a result, since the ball valve body 5 comes into surface contact with the peripheral surface forming the tapered flow path 8, the sealing performance of the ball valve body 5 can be enhanced.

  Further, since the tapered flow channel 28 which is tapered toward the inside of the bag body 1 is connected to the small diameter end portion of the tapered flow path 8, when the air in the bag body 1 is sucked, Air is smoothly guided to the tapered channel 8 via the tapered channel 28.

  Therefore, the air in the bag body 1 can be efficiently sucked, and the time required for sucking the air can be shortened.

  Further, since the valve body 4 is formed of a material that is harder and less elastic than the material of the ball valve body 5, even if the valve body 4 is fixed to the bag body 1 by thermocompression bonding, the valve body 4 is not deformed. Can be prevented.

  The screw cap 6 is formed of a material that is softer and more elastic than the material of the valve body 4, so that when the suction port of the air suction pump is inserted into the connection port 31 of the screw type cap 6, the connection port 31 is elastically deformed and comes into close contact with the suction port of the air suction pump, so that the air suction pump can reliably suck air or the like from the connection port 31.

  The above-described sealed bag is particularly effective when a hard container such as frozen meat is placed in the bag body 1. This is because in that case, even if the air suction pump sucks air in the bag body 1, the negative pressure in the bag body 1 cannot be increased, and the force acting on the ball valve body 5 does not increase. It is.

  In the above embodiment, the bag body 1 is deaerated while the screw cap 6 is completely tightened. However, the screw cap 6 is slightly loosened and tightened (not fully closed). The bag body 1 may be degassed.

  When the screw cap 6 is slightly loosened from the fully tightened state, the stopper portion 9 is separated from the ball valve body 5, and a gap is generated between the ball valve body 5 and the stopper portion 9. In this state, if the air is sucked by the air suction pump, the ball valve body 5 can be easily moved to the screw cap 6 side. Therefore, the closed state of the tapered channel 8 can be easily released by the suction force of the air suction pump.

  In the above embodiment, the unevenness 13 is formed only on the inner surface of the bag front side sheet 11, but the same unevenness as the unevenness 13 may be formed also on the inner surface of the bag backside sheet 12, or Concavities and convexities may be formed on the inner surfaces of both the sheet 11 and the bag back sheet 12. That is, the irregularities 13 may be formed on at least one surface of the bag front side sheet 11 and the bag back side sheet 12.

  In the embodiment described above, the protrusions of the unevenness 13 are formed in a substantially circular shape in plan view, but may be formed in a substantially polygonal shape in plan view.

  In the above embodiment, the substantially spherical ball valve body 5 is used. However, a solid and substantially bullet-shaped tapered valve body 105 as shown in FIG. 13 may be used. When this tapered valve body 105 is used, the end face on the large diameter end side of the tapered valve body 105 is opposed to the stopper portion 9. The tapered valve body 105 may be used together with the screw type cap 106.

  In the above embodiment, the valve body 4 in which the tapered flow path 8 and the thick flow path 28 are formed is used, but a valve body in which only the tapered flow path 8 is formed may be used.

  In the above-described embodiment, the tapered flow channel 28 that is tapered toward the inner side of the bag body 1 is connected to the small diameter end portion of the tapered flow channel 8. A flow path having a substantially constant diameter may be connected. That is, the flow path formed by a substantially cylindrical surface may be connected to the small diameter end portion of the tapered flow path 8.

  In the said embodiment, although the valve | bulb 3 was attached to the bag main body 1, you may attach the valve | bulb 3 to the bag main body 201 shown in FIG.

  The bag body 201 connects the bag front side sheet 211 with the valve 3 attached to the edge, the bag back side sheet 212 facing the bag front side sheet 211, the bag front side sheet 211 and the bag back side sheet 212, and And a gusset 222 bent to the side.

  Thus, since the valve 3 is attached to the edge of the bag front sheet 211, only the gas between the bag front sheet 211 and the liquid in the bag body 201 can be drawn out of the bag body 201. .

  In the above embodiment, a slider for easily and reliably opening and closing the opening 7 may be attached to the bag body 1.

  Further, the valve structure described in the above embodiment may be provided in the slider shown in FIGS.

  The shape of the tapered channel of the present invention is not limited to the substantially conical shape as in the above embodiment, and any shape may be used as long as the shape is tapered toward the inside of the bag body. For example, the tapered channel of the present invention may have a spheroid shape.

  In the above embodiment, the diameter of the outer peripheral surface of the threaded portion 17 is smaller than the width W of the lower portion of the valve body 4 in the figure, but may be larger than the width W.

  In the embodiment described above, the screw cap 6 that can be attached to and detached from the attachment port 27 with a screw structure is used. However, a cap that can be attached to and detached from the attachment port 27 with a structure other than the screw structure may be used.

  In the above embodiment, the screw type cap 6 is detachably attached to the attachment port 27, but the cap may be fixed to the attachment port 27. As with the screw-type cap 6, the cap includes a stopper portion that is inserted into the attachment port 27 and contacts the ball valve body 5, a spring portion that biases the stopper portion toward the ball valve body 5, And a connection port communicating with the narrow channel 6.

FIG. 1 is a schematic front view of a sealed bag according to an embodiment of the present invention. FIG. 2 is a schematic front view of the valve of the sealing bag. FIG. 3 is a schematic side view of the valve. FIG. 4 is a schematic sectional view taken along line F4-F4 in FIG. FIG. 5 is a schematic sectional view taken along line F5-F5 in FIG. FIG. 6 is a schematic plan view of the valve. FIG. 7 is a schematic bottom view of the valve. FIG. 8 is a schematic front view of the screw cap of the valve. FIG. 9 is a schematic sectional view taken along line F9-F9 in FIG. FIG. 10 is a schematic perspective view of the screw-type cap. FIG. 11 is another schematic perspective view of the screw-type cap. FIG. 12 is another schematic perspective view of the screw-type cap. FIG. 13 is a schematic perspective view of a tapered valve body. FIG. 14 is a schematic perspective view of a modified example of the sealing bag. FIG. 15 is a schematic perspective view of a conventional sealed bag. FIG. 16 is a schematic perspective view of a conventional slider.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bag main body 2 Fastener 3 Valve 4 Valve main body 5 Ball valve body 6 Screw type cap 7 Opening part 8 Tapered flow path 9 Stopper part 10 Groove 27 Mounting port 29 Spring part 31 Connection port

Claims (2)

A bag body made of a material that does not allow fluid to pass through, and has an opening for taking in and out the contents;
A sealing mechanism provided in the bag body, capable of opening and closing the opening, and sealing the opening when closed;
A valve attached to the bag body for communicating the inside of the bag body and the outside of the bag body;
The above valve
A valve body having a tapered flow path tapered toward the inside of the bag body, and an attachment port provided near the large-diameter end of the tapered flow path and communicating with the tapered flow path;
A valve body that is disposed in the tapered flow path so as to be movable forward and backward toward the inner side of the bag body, and capable of closing the tapered flow path,
A stopper portion that is inserted into the attachment port and contacts the valve body; an elastic body that urges the stopper portion toward the valve body; and a connection port that communicates with the tapered flow path. With a cap attached to the mouth,
A sealing bag, wherein a groove for guiding the fluid in the small-diameter portion of the tapered channel to the cap side is formed on a peripheral surface forming the large-diameter portion of the tapered channel. The sealed bag according to claim 1,
The sealing bag, wherein the cap is detachable from the attachment port.

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