JP2013233984A - Spout device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spout device that makes residual contents which remain on a check valve, less likely to drip.SOLUTION: A spout device 1 attached to a container storing liquid contents comprises: a spout part 2 forming a passage; a mounting part 3 formed so as to project from the spout part 2; and a check valve 30 arranged in the passage of the spout part 2. The check valve 30 includes a cylindrical base part 31, and a flap part 32 capable of turning between a closed position for closing the opening of the base part 31 and an opening position for opening the opening of the base part. The check valve 30 is provided with a liquid reservoir part 34.

Description

  The present invention relates to a spout tool that is used by being attached to a container that contains liquid contents, specifically, a pouring part that forms a flow path, a container attaching part that is formed to project from the pouring part, The present invention relates to a spout tool provided with a check valve disposed in a flow path of a pouring part.

  Conventionally, in a spout tool attached to an opening portion of a container such as a packaging bag, various configurations have been proposed in order to suppress the inflow of outside air into the container through the flow path of the spout tool. For example, Patent Document 1 discloses a spout tool configured to provide a partition wall that can be easily broken in a pouring part that forms a flow path, and to close the flow path in the pouring part by the partition wall. According to the spout tool of this patent document 1, inflow of the outside air into the container through the flow path of the spout part can be suppressed by the presence of the partition wall in the spout part. In addition, this spout tool will be in the state which can pour the content by opening the flow path of a pouring part by breaking the partition in a pouring part at the time of opening.

JP 2008-87786 A

  By the way, the spout tool of patent document 1 can suppress the inflow of the outside air into the container through the flow path of the extraction part by the partition during storage before opening, but breaks the partition and opens it. After that, it becomes impossible to suppress the inflow of outside air into the container. Therefore, the present inventors have arranged a check valve in the flow path of the extraction portion as a spout device that can suppress the inflow of outside air into the container regardless of whether the container is opened or not. Has developed a spout tool that opens the channel only when the contents are poured out from the outside.

  Here, from the viewpoint of ease of manufacturing, manufacturing cost, etc., the check valve is integrally formed of a synthetic resin material that can be elastically deformed as a whole, and closes the cylindrical base and the opening of the base. It is preferable to use a swing type check valve that includes a flap portion that is rotatable between a position and an open position that opens the opening. However, when the swing type check valve is used, when the liquid contents are poured out, the contents on the check valve when the spout is returned from the tilted state to the original state. Things may remain. If this residual content is present in a large amount on the check valve, there arises a problem that the residual content on the check valve tends to spill when the cap is closed or the container is tilted slightly.

  The present invention has been made in view of such conventional circumstances, and an object of the present invention is to provide a spout tool that is difficult to spill contents remaining on the check valve.

  In order to achieve the above object, the spout tool according to claim 1 is a spout tool that is used by being attached to a container that contains liquid contents, and a spout section that forms a flow path. A container mounting portion protruding from the pouring portion, and a check valve disposed in the flow path of the pouring portion, the check valve having a cylindrical base portion and an opening of the base portion A flap portion rotatable between a closed position for closing the opening and an open position for opening the opening of the base, and a hinge portion for rotatably connecting the flap to the base. The stop valve is provided with a liquid reservoir for storing the contents remaining on the check valve.

  When a swing type check valve having a flap portion is employed, a space for allowing the flap portion to rotate is secured in an upper portion of the check valve in the flow path of the extraction portion. And when returning the spout tool from the tilted state to the original state, the residual content remaining on the check valve is placed in the space secured above the check valve in the flow path of the spout unit. Will be housed. Here, when the residual content is excessive with respect to the volume of the space, spillage of the residual content is likely to occur.

  According to the above configuration, the residual content on the check valve is first accommodated in the liquid reservoir provided in the check valve, and the residual content overflowing from the liquid reservoir in the space on the check valve. Things will be housed. This prevents a large amount of residual content from being accommodated in the space above the check valve, so that the residual content can be retained on the check valve even when the cap is closed or the container is tilted slightly. It becomes difficult to spill.

  In the invention according to claim 1, the spout tool according to claim 2 is provided on the upper end surface of the base portion, and is provided on a portion closer to the hinge portion than the center of the opening of the base portion. Features.

  When the check valve is returned from its tilted state to its original state, the contents present on the check valve remain until the check valve moves completely to the closed position. It returns to the lower side through a gap (return flow path) between the two. At this time, since the return channel is formed larger toward the side opposite to the hinge part with reference to the center of the opening of the base part, the contents present in the vicinity of the part opposite to the hinge part can easily return to the lower side. The contents present in the vicinity of the hinge part where the return channel is not formed tend to be difficult to return to the lower side. Therefore, when the liquid reservoir is provided for the part closer to the hinge part than the center of the opening of the base part, which is located in the vicinity of the place where the contents hardly return to the lower side through the return flow path, The contents remaining on the check valve without returning to the lower side through the return channel can be more reliably accommodated in the liquid reservoir.

  According to the spout tool of the present invention, it is possible to suppress spilling of the contents remaining on the check valve.

(A) is a perspective view of a spout tool, (b) is sectional drawing of a spout tool. Bottom view of the lower part of the dispensing. (A) is a perspective view of a check valve, (b) is a sectional view of the check valve, (c) is a top view of the check valve, and (d) is a top view of another example check valve. (A) is a perspective view of a dropout prevention member, (b) is a cross-sectional view of the dropout prevention member. (A) is sectional drawing of the spout tool after an opening process, (b) is the elements on larger scale around a non-return valve. Explanatory drawing of the sticking method (adhesion process and cutting-out process) of a gas barrier film. (A)-(c) is explanatory drawing of the sticking method (bending process) of a gas barrier film. (A) is a perspective view of the check valve of another example, (b) is a sectional view of the check valve. (A) is a perspective view of the check valve of another example, (b) is a sectional view of the check valve.

Hereinafter, the spout tool of the present invention will be described with reference to the drawings.
As shown to Fig.1 (a) and (b), the spout tool 1 is equipped with the extraction | pouring part 2 which forms a flow path inside. This pouring part 2 is comprised by combining two members, the pouring lower part 10 and the pouring upper part 20, up and down.

  The pouring lower part 10 constituting the lower part of the pouring part 2 is formed in a bottomed cylindrical shape whose upper end side is opened and whose lower end side is closed by the closing wall 11. As shown in FIGS. 1 and 2, a mounting portion 3 (container mounting portion) for mounting the spout tool 1 to the opening portion of the packaging bag projects at the lower position of the outer peripheral surface (side surface) of the pouring lower portion 10. It is installed. The mounting portion 3 is formed of a substantially rhombic plate-shaped mounting upper wall 3a protruding laterally from the pouring lower portion 10 and a mounting side wall 3b suspended along the periphery of the mounting upper wall 3a. It has become. And in the hollow attachment part 3, the reinforcement part 3c extended from the front-end | tip of the attachment part 3 to the outer peripheral surface of the extraction | pouring lower part 10 is provided. In addition, an annular flange 12 is provided at the center position of the outer peripheral surface of the pouring lower portion 10, and a male screw 13 as an engaging portion for the pouring upper portion 20 is provided at the upper position of the outer peripheral surface. .

  As shown in FIGS. 1B and 2, the blocking wall 11 that closes the lower end of the dispensing lower portion 10 is formed into a thin wall by forming a groove from the upper surface (inner surface) side of the blocking wall 11. A guiding portion 11a is provided. The breakage guiding portion 11a is formed in an annular shape having a substantially circular shape (water droplet shape) with a part bulged. And the tension | pulling part 14 is provided in the inner side position of the bulging part in the fracture | rupture induction | guidance | derivation part 11a. The tension portion 14 includes a shaft body 14b extending upward from the blocking wall 11 and a ring-shaped gripping portion 14a formed at the upper end of the shaft body 14b. The height of the pulling portion 14, that is, the height position of the gripping portion 14a is set so as to be substantially the same as or higher than the upper end of the extraction lowering portion 10.

  As shown in FIG. 1 (b), the upper portion 20 of the pouring portion 2 is formed in a covered cylindrical shape with the lower end opened and the upper end closed by the upper wall 21. Yes. The upper wall 21 of the dispensing upper portion 20 is formed with a flat portion 22 on the outer peripheral side portion and a dome-like bulging portion 23 bulging upward at the center portion. A substantially cylindrical spout 24 is provided at the central position that is the apex of the bulging portion 23. The inner peripheral surface of the spout 24 is formed in a reverse taper shape that decreases in diameter from the distal end toward the proximal end. And the front-end | tip part of the spout 24 is formed in the shape which spreads toward the outer side while it is formed in the inclined shape from which height differs in the circumferential direction. In addition, an annular peripheral wall 25 for preventing liquid sag is provided around the spout 24 in the bulging portion 23.

  On the inner peripheral surface of the dispensing upper portion 20, a female screw 26 is provided as an engaging portion for the dispensing lower portion 10. Further, on the outer peripheral side of the lower surface (inner surface) of the upper wall 21, when the male screw 13 of the pouring lower portion 10 and the female screw 26 of the pouring upper portion 20 are engaged, the inner peripheral surface of the pouring lower portion 10. A sandwiching wall 27 is provided upright to support the inner peripheral surface. The sandwiching wall 27 is an annular wall having the same center as that of the pouring lower part 10, and when the male screw 13 of the pouring lower part 10 and the female screw 26 of the pouring upper part 20 are engaged, The forming position is set so as to be accommodated between the inner peripheral surface of the first member and the gripping portion 14a.

  In addition, an annular support wall 28 centering around the spout 24 is provided on the lower surface (inner surface) of the bulging portion 23 in the upper wall 21. The support wall 28 and the sandwiching wall 27 have an annular shape with the same center, and the support wall 28 is located inside the sandwiching wall 27. Further, when the male screw 13 of the pouring lower portion 10 and the female screw 26 of the pouring upper portion 20 are engaged, the support wall 28 is accommodated inside the gripping portion 14 a of the pulling portion 14 provided in the pouring lower portion 10. As shown, the formation position is set.

  A first step portion 28a and a second step portion 28b are formed on the inner peripheral surface of the support wall 28, and the support wall 28 has a shape in which the inner peripheral surface expands stepwise toward the tip side at both step portions. ing. A check valve 30 is attached to a region located between the first step portion 28a and the second step portion 28b in the inner region of the support wall 28, and between the second step portion 28b and the tip end portion. A dropout prevention member 40 for preventing the check valve 30 from falling off is attached to the region where the check valve 30 is located. Further, an engagement groove that engages with the drop-off prevention member 40 is provided at a portion between the second step portion 28 b and the tip end portion on the inner peripheral surface of the support wall 28.

  As shown in FIG. 3, the check valve 30 connects the cylindrical base portion 31 that forms a flow path in the inner region, the flap portion 32 that closes the upper end opening of the base portion 31, and the base portion 31 and the flap portion 32. This is a swing type check valve including the hinge portion 33. The check valve 30 is integrally formed of an elastically deformable soft synthetic resin material (for example, silicone rubber) or natural rubber. In addition, the hardness of the synthetic resin material constituting the check valve 30 is A10 / S to A90 / in the measured value with a type A durometer in accordance with JIS-K6253 from the viewpoint of ensuring the accuracy of the opening / closing operation of the flap portion 32. A range of S is preferable.

  The base 31 is formed in a cylindrical shape that forms a channel with a circular cross section in the inner region. The outer diameter of the base portion 31 is set to be slightly smaller than the inner diameter of the portion between the first step portion 28a and the second step portion 28b in the support wall 28 of the dispensing upper portion 20. The flap portion 32 is a block-shaped lid portion having a circular cross section, and is connected to the base portion 31 via a hinge portion 33 at a part of the periphery thereof. Further, a portion of the upper end surface of the base portion 31 on the hinge portion 33 side, that is, a portion closer to the hinge portion 33 than the center P of the opening in the base portion 31 of the check valve 30 is cut from the upper end surface of the base portion 31 to the outer peripheral surface. A liquid reservoir 34 having a lacking shape is provided. In particular, in the present embodiment, the liquid reservoir 34 is provided at a position located farther from the hinge 33 than the center P of the opening of the base 31.

  As shown in FIG. 3, a flange portion 32 a that protrudes laterally is provided on the upper peripheral edge of the flap portion 32. And the flap part 32 is formed so that it may be larger than the flow path cross section of the base 31 on the upper side where the flange part 32a is provided, and the lower side will be smaller than the flow path cross section. It is formed in a taper shape that gradually decreases in diameter. In addition, the flange part 32a is a concept corresponding to the part (part which can be latched by the valve seat part 31a of the base 31 mentioned later) larger than the flow-path cross section of the base 31 in the flap part 32. FIG. Further, a cutout portion 32b having a shape in which the flange portion 32a is cut out linearly is provided at a position on the opposite side of the connection portion with the hinge portion 33 on the upper peripheral edge of the flap portion 32. As shown in FIGS. 3B and 3C, the notch 32 b has a part (X portion) in the upper end opening of the base 31 in the axial direction of the base 31 (vertical direction in FIG. 3B). It is formed in a shape along.

  As shown in FIG. 3B, the hinge portion 33 connects the upper portion of one side surface (the surface forming the straight portion of the missing circle) and the upper end portion of the base portion 31 in the flap portion 32. Then, with the hinge portion 33 as a base point, the flap portion 32 is rotatable between a closed position where the upper end opening of the base portion 31 is closed and an open position where the upper end opening is opened.

  The closed position is a position where the valve seat portion 31a (the entire upper end opening edge) of the base portion 31 and the flange portion 32a of the flap portion 32 are brought into contact and locked, and the open position is based on the hinge portion 33. The flap portion 32 is pivoted upward and is spaced from the valve seat portion 31 a of the base portion 31. As shown in FIG. 3B, when the flap portion 32 is in the closed position, a part of the cutout portion 32 b of the flap portion 32 (portion X along the upper end opening of the base portion 31) is a longitudinal section of the check valve 30. In this case, the base 31 is brought into contact with one point. Moreover, when the flap part 32 exists in a closed position, the lower surface of the flap part 32 is located in the inner region (inside a flow path) of the base 31.

  As shown in FIG. 1B, the check valve 30 has a first stage in the inner region of the support wall 28 with the upper end of the base 31 in contact with the first step part 28 a of the support wall 28. It is attached to the region between the portion 28a and the second step portion 28b. At this time, the check valve 30 is attached so that the side on which the hinge portion 33 is formed is positioned on the higher side (left side in the drawing) of the tip end portion of the spout 24.

  A space S for allowing the flap portion 32 of the check valve 30 to rotate is secured in the upper portion of the first step portion 28 a in the inner region of the support wall 28. The height of the space S, that is, the distance from the lower surface of the bulging portion 23 to the first step portion 28a is determined by the maximum rotation angle of the flap portion 32 (the flap portion 32 has the upper wall 21 (bulging It is preferable to set the angle of contact with the lower surface of the portion 23) to be within a range of 10 to 60 degrees. By setting to the said range, the passage area in case the flap part 32 exists in an open position can be ensured suitably.

  As shown in FIG. 4, the dropout prevention member 40 is an annular member that forms a flow path in the inner region. The outer diameter of the drop-off preventing member 40 is set to be slightly smaller than the inner diameter of the portion of the support wall 28 of the dispensing upper portion 20 between the second step portion 28b and the tip portion. An engagement protrusion 41 that engages with an engagement groove provided on the inner peripheral surface of the support wall 28 is provided on the outer peripheral surface of the dropout prevention member 40. In addition, the inner peripheral portion of the drop-off preventing member 40 is provided with a bridging wall 42 that connects between the inner circumferential surfaces facing each other, and a cross-shaped restricting projection that extends upward at the upper center position of the bridging wall 42. 43 is provided.

  As shown in FIG. 1B, the drop-off prevention member 40 is in a state in which the upper surface thereof is in contact with the second step portion 28b of the support wall 28 and the lower end of the base portion 31 of the check valve 30. It is attached to a region between the second step portion 28 b and the tip portion in the inner region of the support wall 28. At this time, the drop-off prevention member 40 is engaged with the support wall 28 by engaging the engagement protrusion 41 provided on the outer peripheral surface of the drop-off prevention member 40 with the engagement groove provided on the inner peripheral surface of the support wall 28. Fixed inside. In a state where the check valve 30 and the drop-off prevention member 40 are both mounted in the support wall 28, the distal end portion of the restriction projection 43 of the drop-off prevention member 40 is located in the inner region of the base 31 of the check valve 30. It contacts the lower surface of the flap portion 32 in the closed position.

  As shown in FIG. 1, a cap portion 50 is attached to the dispensing upper portion 20 via a hinge 51. With the hinge 51 as a base point, the cap portion 50 can be rotated between a closed position that covers the bulging portion 23 of the upper wall 21 and an open position that exposes the bulging portion 23. The formation position of the hinge 51 in the dispensing upper part 20 is opposite to the side where the hinge part 33 of the check valve 30 is formed, that is, opposite to the hinge part 33 of the check valve 30 across the central axis of the dispensing upper part 20. It is set to the position to perform.

  In addition, the formation position of the hinge 51 in the extraction | pouring upper part 20 prescribes | regulates the inclination direction of the extraction tool 1 at the time of extracting the contents from the extraction tool 1. FIG. That is, at the time of pouring, the side opposite to the formation position of the hinge 51 is inclined downward and used. Therefore, the check valve 30 is attached so that the side on which the hinge portion 33 is formed is positioned on the lower side when being poured out. And the spout 24 is formed so that the high side (the left side in the figure) of the tip portion is positioned on the lower side during the pouring.

  As shown in FIG. 1B, an insertion protrusion 52 that is inserted into the spout 24 and closes the spout 24 when the cap 50 is positioned at the closed position is provided on the upper inner surface of the cap 50. Yes. In addition, although the code | symbol is abbreviate | omitted, the protrusion for engaging with each other and hold | maintaining the cap part 50 in the closed state on the inner peripheral surface of the cap part 50 and the outer peripheral surface of the bulging part 23 of the upper wall 21 Each of the engaging portions is provided.

  By the way, the hinge 51 that connects the cap part 50 and the dispensing upper part 20 may be extended by repeatedly opening and closing the cap part 50. When the hinge 51 is stretched, the cap portion 50 cannot be positioned in the correct closed position, and the cap portion 50 is held by engaging the engaging portions of the cap portion 50 and the bulging portion 23 in the closed position. Can be difficult. Therefore, in the present embodiment, the positioning projection 29 is provided in the vicinity of the hinge 51 on the upper surface of the flat portion 22 of the upper wall 21. The positioning protrusion 29 contacts the inner peripheral surface of the cap unit 50 when the cap unit 50 is positioned at the closed position, thereby positioning the position of the cap unit 50. Thereby, the cap part 50 can be located in the correct closed position, and the engagement relationship of the cap part 50 and the bulging part 23 in a closed position can be formed suitably.

  In parts other than the check valve 30 in the above-described spout tool 1 (attachment part 3, spout lower part 10, spout upper part 20, cap part 50, and drop-off prevention member 40), spouts such as spouts are generally used. A known synthetic resin material to be used can be used. Known synthetic resin materials include, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid. Examples thereof include thermoplastic resins such as a copolymer, an ethylene-methyl acrylate copolymer, and an ethylene-propylene copolymer.

  As shown in FIG. 1B, a gas barrier film 60 as a gas barrier member is attached to the entire lower surface of the dispensing lower portion 10. The gas barrier film 60 is formed in a shape that is slightly larger than the outer peripheral shape of the extraction lower portion 10 (attachment side wall 3b). And in the peripheral part of the gas barrier film 60, the bending part 61 adhere | attached and fixed to the attachment part 3 in the state bent upward along the outer peripheral surface (outer surface of the side wall 3b) of the attachment part 3 is provided. . In the present embodiment, the bent portion 61 is provided on the entire periphery of the gas barrier film 60. Further, in the gas barrier film 60, a half cut 62 having the same shape as the breakage guiding portion 11a is formed at a position located below the breakage guiding portion 11a formed on the closing wall 11 of the dispensing lower portion 10. In FIG. 2, the gas barrier film 60 is not shown. In addition, as the gas barrier film 60, the multilayer resin sheet which has an aluminum foil layer, an ethylene vinyl-alcohol copolymer layer, a ceramic vapor deposition film layer etc. as a gas barrier layer can be used, for example.

  Here, an example of a method for attaching the gas barrier film 60 to the extraction lower portion 10 will be described with reference to FIGS. First, a roll 70a around which a multilayer resin sheet 70 having a three-layer structure composed of a gas barrier layer 60a and heat fusion layers 60b and 60c laminated on both surfaces of the gas barrier layer 60a is prepared. And the adhesion process which adheres the spout tool 1 with respect to the multilayer resin sheet 70 sent out from the roll 70a, the cutting process which cuts out the adhesion part with respect to the spout tool 1 from the multilayer resin sheet 70, and the gas barrier film 60 are bent. The gas barrier film 60 is affixed to the extraction | pouring lower part 10 by performing the bending process which forms the part 61 in order.

  The bonding step is a step of bonding the spout tool 1 to the multilayer resin sheet 70. As shown in FIG. 6, in the bonding process, first, the pouring lower part 10 is held by a predetermined holding jig 71 with the lower surface (the surface on the closing wall 11 side) facing upward. Next, the holding jig 71 is moved toward the multilayer resin sheet 70, and the lower surface of the extraction lower portion 10 is brought into contact with the surface of the multilayer resin sheet 70 on the heat-sealing layer 60 c side. And the multilayer resin sheet 70 is pressed toward the lower surface of the extraction | pouring lower part 10, heating the multilayer resin sheet 70 using the heating apparatuses 72, such as a seal bar. Thereby, the multilayer resin sheet 70 is heat-welded with respect to the lower surface of the extraction | pouring lower part 10 (the lower surface of the obstruction | occlusion wall 11 of the extraction | pouring lower part 10, and the lower edge of the attachment side wall 3b in the attachment part 3). And the multilayer resin sheet 70 by which the extraction | pouring lower part 10 was heat-welded is provided to a cutting-out process. The heating device 72 is subjected to a surface treatment such as Teflon (registered trademark) so that the multilayer resin sheet 70 is not bonded to the heating device 72 in the bonding step.

  The cutting step is a step of cutting an adhesive portion for the spout tool 1 from the multilayer resin sheet 70. As shown in FIG. 6, in the cutting process, the multi-layer resin sheet 70 is cut along the outer periphery of the pouring lower part 10 by using a cutting device 73 such as a laser or a knife, and the pouring in the multi-layer resin sheet 70 is performed. The part (gas barrier film 60) bonded to the lower part 10 is cut out. At this time, the cut out gas barrier film 60 is cut into a shape that is slightly larger than the outer peripheral shape of the pouring lower portion 10, and a bending margin that protrudes laterally from the pouring lower portion 10 is formed at the peripheral portion of the gas barrier film 60. 61a is provided. And the extraction | pouring lower part 10 with which the gas barrier film 60 was affixed is provided to a bending process.

  The bending step is a step of forming the bent portion 61 in the gas barrier film 60. As shown in FIG. 7, in the bending process, the bent portion 61 is formed by the cooperation of the bending member 74 and the holding jig 71. The bending member 74 includes a cylindrical bending die 75 in which a pressing hole 75 a is formed in an inner region, and a heater 76 that heats the bending die 75. The push-in hole 75a has a substantially rhombic cross section corresponding to the outer shape of the mounting portion 3 of the pouring lower portion 10, and the cross-sectional shape of the push hole 75a is larger than the outer shape of the mounting portion 3 of the pouring lower portion 10 and is bent. It is set smaller than the outer shape of the gas barrier film 60 having the allowance 61a.

  As shown in FIG. 7A, after the cutting step, the pouring lower part 10 to which the gas barrier film 60 is attached is held in the holding jig 71 and is opposed to the bending member 74. Placed in. Then, as shown in FIG. 7B, the bending member 74 moves closer to the holding jig 71, and the extraction lower part 10 held by the holding jig 71 is pushed into the pushing hole 75 a of the bending mold 75. It is pushed in. As a result, the gas barrier film 60 is bent into a shape along the outer peripheral surface of the attachment portion 3 of the dispensing lower portion 10 with the bending allowance 61 a being slidably contacted with the inner peripheral surface of the folding die 75.

  Thereafter, the folding mold 75 is heated by the heater 76, and the bending allowance 61 a of the gas barrier film 60 is heated via the folding mold 75. Thereby, the bending allowance 61a of the gas barrier film 60 is thermally welded to the outer peripheral surface of the attaching portion 3 of the pouring lower portion 10 and is fixed in a state of being bent along the outer peripheral surface of the attaching portion 3. It becomes. Thereafter, as shown in FIG. 7C, the bending member 74 is retracted from the holding jig 71. The bending die 75 is subjected to a surface treatment such as Teflon (registered trademark) so that the bending margin 61a of the gas barrier film 60 is not bonded to the bending die 75 in the bending step.

Next, the operation of this embodiment will be described below.
The spout tool 1 of the present embodiment is used by being attached to an opening of a predetermined container (for example, a packaging bag formed in a bag shape with a resin sheet) that stores liquid contents. In the container to which the spout tool 1 is attached, the gas barrier film 60 affixed to the lower surface of the blocking wall 11 and the mounting portion 3 prevents the outside air such as oxygen from entering the container through the spout tool 1 portion. The

  When the container is attached to the attachment part 3 of the spout tool 1, if the peripheral edge portion of the gas barrier film 60 protrudes laterally from the lower surface of the pouring lower part 10 due to a cutting error of the gas barrier film 60, the protrusion The peripheral portion thus formed becomes a stepped obstacle, and it is difficult to sufficiently attach the attachment portion 3 of the dispensing lower portion 10 and the container. And when the adhesiveness of the container with respect to the attachment part 3 is inadequate, there exists a possibility that it may become attachment failure and the gas barrier property of the container which attached the spout tool 1 may fall.

  Here, in the spout tool 1 of this embodiment, the peripheral part (bending allowance 61a) of the gas barrier film 60 is fixed in the state bent along the outer peripheral surface of the attachment part 3, and it is set as the bending part 61. FIG. Thereby, the level | step difference produced between the outer peripheral surface of the attaching part 3 and the peripheral part of the gas barrier film 60 is suppressed to the minimum (for the thickness of the gas barrier film 60). Therefore, the container can be easily brought into close contact with the attachment portion 3 and the attachment failure of the container can be suppressed. Further, since the outer surface side of the bent portion 61 of the gas barrier film 60 is also formed by the heat-sealing layer 60b, the outer surface of the bent portion 61 (the heat-sealing layer 60b) when the container is attached to the attachment portion 3. And the container can be suitably welded.

  Moreover, the spout tool 1 will be in the state which can pour the content out of the container by performing the opening process described below. First, the pouring upper part 20 is rotated and the pouring upper part 20 and the cap part 50 are removed from the pouring lower part 10. Thereby, the holding part 14a of the tension | pulling part 14 will be exposed from the upper opening of the extraction | pouring lower part 10, and it will be in the state which can hold | grip the holding part 14a easily. Thereafter, the gripping portion 14a is gripped and pulled upward to tear the breakage guiding portion 11a of the blocking wall 11 and the half cut 62 of the gas barrier film 60, thereby opening the lower end of the dispensing lower portion 10. And by attaching the extraction | pouring upper part 20 and the cap part 50 to the extraction | pouring lower part 10, the spout tool 1 will be in the unseal | opening state shown in FIG.

  When the cap part 50 of the spout tool 1 in the opened state is opened and the container is tilted, the contents in the container pass through the flow path in the pouring lower part 10 and the flow path in the drop-off prevention member 40 to check valves. Reach 30. And when the pouring pressure of the contents acts on the flap portion 32 of the check valve 30, the flaps 32 are pressed from the contents and rotated from the closed position to the open position, and the check valve 30 passes the contents. And the contents are poured out from the spout 24.

  When the packaging bag is returned from the tilted state to the original state, the pressed state of the check valve 30 by the contents against the flap portion 32 is eliminated, and the check valve 30 returns from the open position to the closed position. At this time, the lower surface of the flap portion 32 of the check valve 30 abuts on the tip of the restriction projection 43 provided on the drop-off prevention member 40 in the inner region of the base portion 31, and the flange portion 32a of the flap portion 32 is the valve seat portion. Locked by 31a, the further intrusion of the flap portion 32 into the base portion 31 is restricted. And in the normal mounting state in which the pouring pressure of the contents does not act on the flap part 32, the flap part 32 is located at a closed position that closes the flow path in the base part 31.

  When the spout 1 is returned from the tilted state to the original state, the contents remaining in the space S on the upper side of the check valve 30 are not changed until the check valve 30 is completely moved to the closed position. It can return to the lower side through a gap (return flow path A) between the base 31 and the flap portion 32 of the check valve 30. At this time, as shown in FIG. 5 (b), the contents return from the upper side to the lower side of the check valve 30 in the portion where the notch 32 b is provided at the periphery of the flap portion 32 of the check valve 30. Therefore, a large return flow path A is ensured. And by ensuring the large return flow path A, the contents existing in the space S can be efficiently returned to the lower side of the check valve 30.

  After the check valve 30 has completely moved to the closed position, the content may not fully return and a large amount of residual content may remain in the space S on the upper side of the check valve 30. In this case, the residual content is first caused by the liquid pool 34 provided in the check valve 30, more specifically, by the liquid pool 34 of the base 31 and the inner peripheral surface of the support wall 28 of the dispensing upper portion 20. It is accommodated in the enclosed space T. In the space S on the check valve 30, residual contents overflowing from the liquid reservoir 34 are accommodated. Therefore, a large amount of residual content is suppressed from being stored in the space S on the check valve 30. Thereby, even when the packaging bag is slightly inclined, or when the insertion protrusion 52 is inserted into the space S on the check valve 30 with the cap portion 50 closed, the residual content on the check valve 30 remains. It becomes difficult to spill.

  In addition, after the check valve 30 has completely moved to the closed position, if the content does not fully return and a large amount of residual content remains in the space S on the upper side of the check valve 30, the check valve The pressure based on the mass of the contents acts on the upper part of 30. At this time, when the pressure exceeds a predetermined value, in the longitudinal section of the check valve 30, a portion X where the notch portion 32b of the flap portion 32 and the base portion 31 contact at one point (FIGS. 3B and 3C). Through the reference), the residual contents ooze out and return to the lower side of the check valve 30. Thus, in the present embodiment, by providing the notch 32 b in the flap portion 32 of the check valve 30, the residual content remaining in the space S can be efficiently returned to the lower side of the check valve 30. In addition, a large amount of residual contents are difficult to accumulate in the space S.

Next, the effect in this embodiment will be described below.
(1) A swing type check valve 30 including a cylindrical base portion 31, a flap portion 32, and a hinge portion 33 that rotatably connects the flap portion 32 to the base portion 31. It is arranged in the flow path. According to the above configuration, the check valve 30 that is closed except when the contents are poured out is present in the flow path of the dispensing section 2 regardless of whether the contents are opened or not. The check valve 30 can suitably suppress the inflow of outside air into the container through the two flow paths.

  (2) The check valve 30 is provided with a liquid reservoir 34. According to the above configuration, a large amount of residual content is suppressed from being stored in the space S on the check valve 30, and the check is also performed when the cap portion 50 is closed or the packaging bag is slightly tilted. Residual contents on the valve 30 are less likely to spill.

(3) The liquid reservoir portion 34 is provided on the upper end surface of the base portion 31 of the check valve 30, and is provided on a portion closer to the hinge portion 33 than the center P of the opening in the base portion 31.
When the spout tool 1 is returned from the tilted state to the original state, the return flow path A is formed so as to be larger toward the opposite side of the hinge portion 33 with respect to the center P of the opening of the base portion 31. Therefore, on the check valve 30, the contents present near the opposite side of the hinge part 33 easily return to the lower side, and the contents present near the hinge part 33 where the return flow path A is not formed are lower side. It tends to be difficult to return to. Therefore, in the case where the liquid reservoir 34 is provided at a position closer to the hinge 33 than the center P of the opening of the base 31, which is located in the vicinity of a portion where the contents hardly return to the lower side through the return flow path A. Thus, the residual content remaining on the check valve 30 without returning to the lower side through the return channel A can be more reliably accommodated in the liquid reservoir 34.

  (4) The liquid reservoir portion 34 is a portion closer to the hinge portion 33 than the center P of the opening in the base portion 31 of the check valve 30 and is located farther from the hinge portion 33 than the center P of the opening. Is provided. The part of the base 31 of the check valve 30 closer to the hinge 33 than the center P of the opening forms the return flow path A on the check valve 30 among the parts of the hinge 33 closer to the center P of the opening. It is located closest to the location that is not. Therefore, according to the said structure, the effect of said (3) can be acquired further more notably.

  (5) At the periphery of the flap portion 32, a flange portion 32 a that is locked to the upper surface of the base portion 31, and a notch portion 32 b that is partially formed along the opening of the base portion 31 are provided. According to the above configuration, until the check valve 30 is completely closed, the return flow path A is secured larger in the portion where the notch portion 32b is provided, and a larger amount toward the lower side of the check valve 30 is obtained. The contents can be returned. Therefore, it is possible to suppress a large amount of residual contents from being accumulated in the upper part of the check valve 30. The concept of “along the opening of the base portion 31” is not limited to the state in which the cutout portion 32b (a part thereof) is completely formed along the opening of the base portion 31, but a very small portion of the flange portion 32a. It is a concept that allows a state in which the residual is left.

  (6) A notch 32 b is provided on the side of the periphery of the flap portion 32 opposite to the connection portion with the hinge portion 33. The portion of the periphery of the flap portion 32 opposite to the connection portion with the hinge portion 33 is the portion that is finally closed when the check valve 30 moves from the open position to the closed position. Therefore, according to the above configuration, the effect that the return flow path A can be secured larger can be obtained until the check valve 30 is completely closed.

  (7) In the longitudinal cross section of the check valve 30 in which the flap portion 32 is in the closed position, there is a portion X where the notch portion 32b of the flap portion 32 and the base portion 31 contact at one point. According to the above configuration, even after the check valve 30 is completely closed, a large amount of residual contents accumulate on the check valve 30 and a large pressure acts on the check valve 30. It is also possible to return the residual contents to the lower side of the check valve 30 through the portion X that contacts at one point. When the residual content on the check valve 30 becomes small, it remains on the upper part of the check valve 30 without returning through the portion X that contacts at one point. However, since a small amount of residual content remains on the upper portion of the check valve 30, the residual content (the liquid film) functions as a gas barrier layer, and an effect of suppressing the inflow of outside air can be obtained.

  (8) The dropout prevention member 40 having the restriction projection 43 that contacts the lower surface of the flap portion 32 of the check valve 30 in the closed position is provided. According to the above configuration, the flap portion 32 can be prevented from entering the base portion 31. Further, by forming the restricting protrusion 43 in a cross-shaped cross section, the strength of the restricting protrusion 43 is increased and the contact area in contact with the lower surface of the flap portion 32 is increased. Thereby, even when the contact portion of the regulating projection 43 on the lower surface of the flap portion 32 is shifted from the center to the peripheral side due to a molding error or an attachment error of the drop-off prevention member 40, the flap portion 32 is embedded in the base portion 31. Can be suitably controlled.

  Further, in the case where the notch portion 32b is provided on the periphery of the flap portion 32 as compared with the configuration in which the flange portion is provided on the entire periphery of the flap portion, the portion without the flange portion 32a (notch portion 32b) is formed. Since it exists, the effect | action which controls the penetration of the flap part 32 in the base 31 based on the flange part 32a becomes weak. Therefore, by providing the restricting projection 43, the flap portion 32 can be prevented from entering the base portion 31 at least as much as the configuration in which the flange portion 32a is provided on the entire periphery of the flap portion 32.

  (9) The restriction protrusion 43 provided on the drop-off prevention member 40 is formed in a shape extending to the inner region of the base 31 of the check valve 30. According to the said structure, even if it is a case where the flap part 32 of the non-return valve 30 is formed thinly, the penetration | invasion of the flap part 32 can be suppressed suitably. Therefore, the flap part 32 can be easily reduced in thickness.

  (10) The pouring part 2 is configured to be separable and assembled into the pouring upper part 20 and the pouring lower part 10, and the check valve 30 and the drop-off preventing member 40 including the regulation protrusion 43 are arranged in the pouring upper part 20 doing. According to the said structure, the structure regarding the inflow suppression of external air exists by having arrange | positioned the check valve 30 and the control protrusion 43 (drop-off prevention member 40) which are the structures regarding the inflow suppression of external air in concentration on the extraction | pouring upper part 20. It becomes easy to give other functions to the pouring lower part 10 side which does not carry out, and to attain further multi-functioning of the pouring tool 1. FIG. In the present embodiment, as the other function, a closing function (blocking wall 11 and pulling portion 14) for preventing the contents from flowing out from the flow path is provided to the dispensing lower portion 10. Moreover, when other functions are given to the extraction lower part 10 side, the extraction upper part 20 and the extraction lower part 10 can be classified by function, and member management is easy.

  (11) A closing wall 11 that closes the flow path is provided at the lower end of the extraction lower part 10, and a tension part 14 for removing a part of the closing wall is provided on the inner surface of the closing wall 11. And the gas barrier film 60 as a gas barrier member is affixed on the outer surface of the obstruction | occlusion wall 11. FIG. According to the said structure, in the state before opening of the spout tool 1, ie, the state before removing the obstruction | occlusion wall 11 in the pouring lower part 10, the penetration | invasion of the outside air into the container via the spout tool 1 is suitable. Can be suppressed. Moreover, opening of the spout tool 1 can be easily realized by pulling the pulling portion 14.

  (12) The height of the tension portion 14 is set at the same position as the upper end of the extraction lower portion 10 or at an upper position than that. When attaching the spout tool 1 to a packaging bag (container), the attachment part 3 of the spout tool 1 is sandwiched between the peripheral edges of a pair of resin sheets constituting the packaging bag, and the peripheral part of the attachment part 3 and the resin sheet The method of adhering is adopted. Therefore, it is necessary to provide the attachment portion 3 with a side surface portion as an adhesive surface to be bonded to the resin sheet. However, if the vertical width of the attachment portion is increased to form the side surface portion, it is poured out accordingly. The part 2 must also be formed long vertically. When the pouring part 2 is formed long vertically, the pulling part 14 is hidden deep in the pouring part 2, and the pulling part 14 in the pouring part 2 may be gripped and pulled when performing the opening process. It can be difficult. Therefore, in the above configuration, the height of the tension portion 14 is set at the same position as the upper end of the extraction lowering portion 10 or an upper position than that. Thereby, when the extraction | pouring part 2 is isolate | separated into the extraction | pouring upper part 20 and the extraction | pouring lower part 10, the tension | pulling part 14 will be in the state exposed to the upper opening of the extraction | pouring lower part 10, and the tension | pulling part 14 will be grasped easily And can be pulled.

  (13) When the pouring upper portion 20 and the pouring lower portion 10 are assembled, the support wall 28 is accommodated inside the grip portion 14a of the tension portion 14 provided in the pouring lower portion 10. According to the said structure, the increase in the height of the extraction | pouring part 2 whole by having set the height of the tension | tensile_strength part 14 to the same position as the upper end of the extraction | pouring lower part 10, or an upper position than it can be suppressed. .

  (14) When the spout tool 1 is tilted in a predetermined tilting direction (a tilting direction defined by the position where the hinge 51 is formed) at the time of pouring, the side on which the hinge portion 33 is formed is reversed so as to be positioned on the lower side. A stop valve 30 is attached. According to the above configuration, the gravity acting on the flap portion 32 is less likely to act in the direction in which the check valve 30 is in the closed position. Therefore, the passage resistance when the contents pass through the check valve 30 at the time of pouring is reduced, and the contents can be suitably distributed.

  (15) A bent portion 61 is formed by bending the peripheral portion of the gas barrier film 60 protruding sideways from the attachment portion 3 of the extraction lower portion 10 along the outer peripheral surface of the attachment portion 3. According to the said structure, the level | step difference which arises between the outer peripheral surface of the attaching part 3 and the peripheral part of the gas barrier film 60 is suppressed, it becomes easy to make a container contact | adhere to the attaching part 3, and the attachment failure of a container is suppressed. be able to.

  (16) The bent portion 61 of the gas barrier film 60 is bonded and fixed to the attachment portion 3 of the spout tool 1. According to the above configuration, even when another member comes into contact with the bent portion 61 of the gas barrier film 60 and the force that raises the bent portion 61 and returns it to the original protruding state is applied. The bent state of the part 61 can be maintained. Therefore, the effect (15) can be obtained more reliably.

  (17) The bent portion 61 is formed on the entire periphery of the gas barrier film 60. According to the said structure, when attaching a container to the extraction | pouring lower part 10, the gas barrier film 60 and a container can be adhere | attached in the outer surface part of the bending part 61. FIG. Then, the gas barrier film 60 and the container are bonded to each other over a predetermined width corresponding to the size of the bent portion 61, thereby comparing the configuration in which the gas barrier film 60 and the container are bonded only on the end surface of the peripheral portion of the gas barrier film 60. Thus, the inflow of outside air between the peripheral portion of the gas barrier film 60 and the container can be effectively regulated.

  In addition, the said embodiment can also be changed and actualized as follows. Moreover, it is also possible to change the said embodiment like the structure of the combination of the following modification example mutually.

  In the above embodiment, one hole-like liquid reservoir 34 is provided for the portion on the hinge 33 side of the base 31 of the check valve 30, but the number, shape, size, and The arrangement position can be changed as appropriate without departing from the spirit of the present invention. For example, the arrangement position of the liquid reservoir 34 in the base 31 is changed to a part closer to the hinge part 33 than the center P of the opening of the base 31 and closer to the hinge part 33 than the center P of the opening. Alternatively, it may be changed to a portion on the opposite side of the hinge portion 33 with the center P of the opening of the base portion 31 as a reference.

  Further, as shown in FIG. 8, a hole-like or groove-like liquid reservoir 34 may be provided on the upper end surface of the base 31 of the check valve 30. Further, a hole-like or groove-like liquid reservoir 34 may be provided on the upper end surface of the flap portion 32 of the check valve 30. When configured in this manner, the outer peripheral surface shape of the base 31 of the check valve 30 is not changed when the liquid reservoir 34 is provided. Therefore, even when the liquid pool portion 34 is provided, it is possible to suitably ensure the mounting stability of the check valve 30 with respect to the support wall 28 of the dispensing upper portion 20.

  Furthermore, a liquid reservoir 34 as shown in FIG. 9 can be formed. In the example shown in FIG. 9, a step portion 35 is provided at an intermediate position in the flow path of the base portion 31, and a flap portion 32 having the step portion 35 as a valve seat portion is provided at an intermediate position in the base portion 31. When configured in this manner, the upper portion of the flap portion 32 in the flow path of the base portion 31 functions as the liquid reservoir portion 34.

  The number, shape, size, and arrangement position of the flange portion 32a and the notch portion 32b provided on the periphery of the flap portion 32 of the check valve 30 can be changed as appropriate without departing from the scope of the present invention. As shown in FIG. 3 (d), the notches 32 b may be formed at a plurality of locations, or the notches 32 b may be formed at portions other than the side opposite to the connection portion with the hinge portion 33. Moreover, you may form the notch part 32b in the shape in alignment with the valve-seat part 31a (opening edge) of the base 31 over predetermined width. In this case, the portion X that contacts at the one point is formed in a wide range. Further, in the above embodiment, the end surface of the notch 32b is formed in a vertical surface shape along the axis of the check valve 30, but may be formed in an inclined surface shape inwardly inclined upward. Good.

  -It is good also as a structure by which the flange part 32a is provided in the whole periphery of the flap part 32, without providing the notch part 32b. Further, the flange portion 32a may be omitted, and the entire periphery of the flap portion 32 may be configured to correspond to the cutout portion 32b.

The specific configuration of the check valve 30 such as the shape can be changed as appropriate.
In the above embodiment, the restricting projection 43 is disposed so as to contact the lower surface of the flap portion 32 of the check valve 30, but the restricting projection 43 is disposed so as to contact the side surface formed in a tapered shape. Also good.

  In the closed position, it is not always necessary for the restricting projection 43 to contact the lower surface of the flap portion 32 of the check valve 30. For example, a slight gap is provided between the lower surface of the flap portion 32 in the closed position and the restricting projection 43, and the flap portion 32 and the restricting projection 43 are moved when the flap portion 32 is rotated further inward than the closed position. The structure which abuts may be sufficient.

  -The shape of the restricting protrusion 43 is not particularly limited. Any shape may be used as long as it is in contact with the lower surface of the flap portion 32 of the check valve 30 and can control the intrusion of the flap portion 32.

  The contact position between the restricting protrusion 43 and the flap portion 32 of the check valve 30 is not limited to the inner region of the base portion 31, and may be any position on the upstream side of the flow path from the valve seat portion 31 a. The same regulating action can be obtained.

  A different configuration may be employed instead of the restricting protrusion 43 provided on the drop-off preventing member 40 as a restricting means for restricting the flap portion 32 from being brought into contact with the lower surface of the flap portion 32 of the check valve 30. For example, a regulating member having a regulating projection 43 may be disposed between the check valve 30 and the drop-off preventing member 40, and a protruding portion or a bridging portion is formed on the inner peripheral surface of the flow path of the base 31 of the check valve 30. May be provided. When the check means is provided in the check valve 30, it may be formed integrally with the base 31 or other members such as pins may be arranged.

-You may abbreviate | omit the control means which contact | abuts to the lower surface of the flap part 32 of the non-return valve 30, such as the control protrusion 43, and controls the penetration | invasion of the flap part 32.
The dropout prevention member 40 prevents the check valve 30 from dropping off from the dispensing upper portion 20, but may prevent the check valve 30 from being displaced. Further, the dropout prevention member 40 may be omitted.

  -The site | part broken by pulling the tension | pulling part 14 may be a part of the obstruction | occlusion wall 11, and the obstruction | occlusion wall 11 whole may be sufficient as it. When the entire blocking wall 11 is ruptured, the rupture guiding portion 11 a may be formed along the inner peripheral surface of the extraction lower portion 10.

-When assembling the extraction upper part 20 and the extraction lower part 10, you may comprise so that the support wall 28 may be located above the holding part 14a of the tension | pulling part 14. FIG.
-In the said embodiment, although the thin-shaped fracture | rupture induction | guidance | derivation part 11a was provided with respect to the obstruction | occlusion wall 11, the structure of a fracture | rupture induction | guidance | derivation part is not specifically limited, For example, even if it is a perforated hole Good. Moreover, you may abbreviate | omit the fracture | rupture induction | guidance | derivation part 11a of the obstruction | occlusion wall 11.

  In the above embodiment, the blocking wall 11 is provided at the lower end position of the extraction lowering portion 10, but the closing wall 11 may be provided at the upper end position of the extraction lowering portion 10 or at an intermediate position in the flow path. In the case where it is provided at the upper end position of the pouring lower part 10, for example, it is possible by adjusting the connection length between the pouring lower part 10 and the pouring upper part 20. Moreover, when providing in the flow path of the extraction | pouring lower part 10, if the part where a flow path internal diameter becomes small diameter and the part which becomes large diameter are formed and the obstruction | occlusion wall 11 is provided in the level | step-difference part of the both parts, for example Good.

  -The structure of the bending part 61 provided in the periphery of the gas barrier film 60 can be changed suitably. For example, in the above embodiment, the bending margin 61a is provided on the entire periphery of the gas barrier film 60 and the bent portion 61 is formed on the entire periphery. Alternatively, a bending margin 61 a may be provided, and the bent portion 61 may be partially formed with respect to the periphery of the gas barrier film 60. Further, the bent portion 61 is not limited to the one formed by bending the bending margin 61a provided intentionally, and the protruding portion on the peripheral edge of the gas barrier film 60 caused by the cutting error or the pasting error of the gas barrier film 60 is formed. It may be formed by bending.

  In the above embodiment, the bent portion 61 of the gas barrier film 60 is bonded and fixed to the attachment portion 3 of the spout tool 1 by heat welding, but the bonding configuration of the bent portion 61 to the attachment portion 3 is particularly limited. Yes. Moreover, the structure which adhere | attaches only a part of bending part 61 with respect to the attaching part 3 may be sufficient. Further, a configuration in which the bent portion 61 is simply bonded without being attached to the attachment portion 3 may be employed.

  The method for attaching the gas barrier film 60 to the dispensing lower portion 10 is not limited to the configuration of the above embodiment. For example, in the above-described embodiment, the holding jig 71 that holds the pouring lower part 10 is moved toward the multilayer resin sheet 70, but a heating device 72 that can move in the vertical direction is adopted, and the heating device 72 is used. The multilayer resin sheet 70 may be brought into contact with the dispensing lower portion 10 while the multilayer resin sheet 70 is moved to the holding jig 71 side by lowering. Further, in the bending process, the bending margin 61a of the gas barrier film 60 and the heat fusion of the bent bending margin 61a (folded portion 61) to the attachment portion 3 may be performed by separate members. Good. Further, as the cutting device 73 used in the cutting process, a bending member 74 as shown in FIG. 7 is used, and the heated bending die 75 is pressed against the multilayer resin sheet so that the bending die 75 has a lower end inner periphery. The multilayer resin sheet 70 may be melted. In this case, the gas barrier film 60 is cut out from the multilayer resin sheet 70, the bending margin 61a of the cut out gas barrier film 60, and the heat fusion to the attachment portion 3 are performed by a series of operations by the bending member 74. Can be done.

  The layer structure of the gas barrier film 60 is not particularly limited as long as it includes at least a gas barrier layer. For example, the heat barrier layer may be provided only on one side of the gas barrier layer 60a, or the base material layer for imparting strength to the gas barrier film 60 may be provided. Moreover, when it is set as the structure which affixes the gas barrier film 60 to the extraction | pouring lower part 10 with an adhesive agent etc., a heat sealing | fusion layer can also be abbreviate | omitted.

  -One of the blocking wall 11 and the gas barrier film 60 may be omitted. Further, both the blocking wall 11 and the gas barrier film 60 may be omitted. In addition, when the closing wall 11 is omitted, the tension portion 14 provided on the closing wall 11 is also omitted. Further, this may be omitted for the half cut 62 of the gas barrier film 60.

  -The extraction | pouring part 2 may be formed from one member, and may be comprised so that isolation | separation and an assembly | attachment can be carried out to three or more some members. Moreover, although the cap part 50 was attached to the extraction | pouring upper part 20 via the hinge 51, it is good also considering the extraction | pouring upper part 20 itself as a covered cylindrical cap. Furthermore, you may make it attach a cap part to the extraction | pouring lower part 10 via a hinge.

  -It is good also as a structure which further affixed the gas barrier film 60 which seals the opening with respect to the upper end opening of the extraction | pouring upper part 20, a lower end opening, or the upper end opening of the extraction | pouring lower part 10. FIG. In this case, the gas barrier film 60 is removed by an opener's hand during the opening process.

  -In the said embodiment, although the reinforcement part 3c was provided about the hollow inside of the attaching part 3, you may change this structure. For example, the extending direction of the reinforcing portion 3c may be changed to the short direction of the mounting upper wall 3a, or the inside of the mounting portion 3 can be made solid.

-Although the tilt direction at the time of pouring is defined by the formation position of the hinge 51, the tilt direction at the time of pouring may be defined by another configuration such as the shape of the spout 24.
-The inclination direction at the time of pouring defined by the predetermined configuration provided in the spout 1 and the mounting direction of the check valve 30 (position of the connecting portion 33) are not limited to the relationship of the above embodiment. .

  -The spout tool 1 of this invention is applicable not only to the packaging bag formed in the bag shape with the resin sheet but to various containers, such as a paper container. In that case, it cannot be overemphasized that the attachment part 3 can be suitably changed according to the form of a container.

  -The structure of the upper wall 21 can be changed as appropriate. For example, if the inner space above the first step portion 28a of the support wall 28 is adjusted to be higher, the amount of rotation of the flap portion 32 moving from the closed position to the open position can be increased, and the residual content The tolerance of things can be increased. Further, the arrangement and height of the peripheral wall 25 provided on the upper wall 21 of the dispensing upper portion 20 can be changed.

Next, a technical idea that can be grasped from the above embodiment and another example will be described.
(A) The spout tool provided with a restricting means that contacts the lower surface of the flap portion and restricts the flap portion from entering the upstream side of the flow path from the valve seat portion.

  (B) The pouring part is configured to be separable into a pouring upper part and a pouring lower part, a blocking wall for closing the flow path is provided in the pouring lower part, and a gas barrier member is provided on the lower surface of the blocking wall, A tension part for breaking and opening at least a part of the blocking wall together with the gas barrier member is provided on the upper surface of the blocking wall, and the height of the tension part is the same as or higher than the upper end of the lower part of the extraction The spout tool set at the upper position.

  (C) The spout provided with a flange portion engaged with the upper surface of the base portion and a notch portion formed so that at least a part thereof is along the opening of the base portion on the periphery of the flap portion Ingredients.

DESCRIPTION OF SYMBOLS S ... Space, 1 ... Outlet tool, 2 ... Outlet part, 3 ... Mounting part, 30 ... Check valve, 31 ... Base part, 32 ... Flap part, 33 ... Hinge part, 34 ... Liquid reservoir part, 60 ... Gas barrier Film, 61 ... bent portion, 61a ... bending allowance.

Claims (2)

A spout tool used by being attached to a container containing liquid contents,
A pouring part that forms a flow path, a container mounting part that protrudes from the pouring part, and a check valve disposed in the flow path of the pouring part,
The check valve includes a cylindrical base, a flap that is rotatable between a closed position that closes the opening of the base and an open position that opens the opening of the base, and the flap with respect to the base A hinge part for connecting the part in a rotatable manner,
The spout device according to claim 1, wherein the check valve is provided with a liquid reservoir for storing contents remaining on the check valve.   2. The spout tool according to claim 1, wherein the liquid pool portion is provided on an upper end surface of the base portion and is provided on a portion closer to the hinge portion than the center of the opening of the base portion.