JP2012246018A - Spout mouthpiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spout mouthpiece having a check valve wholly integrally formed of elastically deformable synthetic resin in the same capable of surely obtaining flowing in suppressing effect of the outer air regardless of the presence of unsealing by suppressing the subduction a flap part of the check valve.SOLUTION: The spout mouthpiece 1 has a spout part 2 forming a flow channel and a securing part 3 formed protrudingly the spout part 2. The check valve 30 comprising a tubular base part 31 and a flap part 32 connected to the upper end of the base part 31 and turnable between a closing position contacting a valve seat part of the base part 31 and closing an opening and an opening position spaced apart from the valve seat part 31a and opening the openings and integrally formed of the elastically deformable resin is arranged in the flowing channel of the spout part 2. A regulating projection 43 regulating the subduction of the flap part 32 into the base part 31 by abutting on the lower surface of the flap part 32 is arranged in the upstream side of the flow channel from the valve seat part 31a.

Description

  The present invention relates to a spout tool including a pouring part that forms a flow path and an attachment part that protrudes from the pouring part.

  Conventionally, in a spout tool attached to an opening portion of a container such as a packaging bag, a spout tool configured to suppress the inflow of outside air into a container through a flow path formed in an inner region is known. Yes. For example, Patent Document 1 discloses a configuration of a spout tool in which a partition wall that can be easily broken is formed in a pouring part, and a flow path in the pouring part is closed 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 contents by opening the flow path of a spout part by breaking the partition in a spout part at the time of opening.

JP 2008-87786 A

  By the way, the outlet device of Patent Document 1 can suppress the inflow of outside air into the container through the flow path of the extraction portion during storage before opening. 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. We have developed a spout tool that opens the flow path when the contents are poured out from the section. Here, from the viewpoint of ease of manufacturing, manufacturing cost, etc., the check valve can be rotated between a cylindrical base, a closed position that closes the upper end opening of the base, and an open position that opens the upper end opening. It is preferable to use a swing-type configuration composed of a flexible flap portion, which is integrally formed of an elastically deformable synthetic resin material. However, when the swing type check valve is integrally formed of the synthetic resin material, the following problems may occur.

  In a general swing type check valve, the flap portion is formed larger than the inner diameter of the base portion so that the upper end opening of the base portion can be closed. Therefore, even if the flap portion is pressed toward the upper end of the base portion, the flap portion does not sink into the base portion because the flap portion contacts the upper end edge (valve seat portion) of the base portion. However, when the entire check valve is integrally formed of the above synthetic resin material, the flap portion is compressed and deformed while it is repeatedly opened and closed, and it goes into the base portion beyond the upper edge and cannot be restored as it is. There was a case. In this case, although the contents can be poured out from the gap formed between the flap portion and the base portion that are distorted due to compression deformation, the outside air can flow into the container through the gap. The effect of suppressing the inflow of outside air cannot be sufficiently exhibited.

  The present invention has been made in view of such conventional circumstances, and an object of the present invention is to provide a check valve having a check valve integrally formed of a synthetic resin material that is elastically deformable as a whole. It is an object of the present invention to provide a spout tool that can more reliably ensure the effect of suppressing the inflow of outside air regardless of whether or not it is opened by restricting the intrusion of the flap portion.

  In order to achieve the above object, the spout tool according to claim 1 is a spout tool including a spout part that forms a flow path and a mounting part that protrudes from the spout part, Between a cylindrical base and a closed position connected to the base and contacting the valve seat of the base to close the opening of the base, and an open position spaced apart from the valve seat and opening the opening In the spout tool, which is formed of a rotatable flap portion and is integrally formed of an elastically deformable synthetic resin material, disposed in the flow path of the spout portion, on the bottom surface of the flap portion. A restricting means that abuts and restricts the flap portion from entering is provided on the upstream side of the flow path from the valve seat portion.

  In the above invention, when a swing type check valve is arranged in the flow path of the pouring part, the container to which the pouring tool is attached is tilted, and the pouring pressure of the contents acts on the flap part of the check valve The flap part is turned from the closed position to the open position so that the check valve is opened, and the flap part is in the closed position and the check valve is closed except when the contents are poured out. It is configured. Therefore, a check valve that is closed except when the contents are dispensed is present in the flow passage of the dispensing portion regardless of whether or not the contents are dispensed. The inflow of outside air into the inside can be suitably suppressed by the check valve. In addition, the check valve can be manufactured easily and the cost thereof can be kept low by adopting a structure in which the check valve is integrally formed of an elastically deformable synthetic resin material.

  In addition, even if the flap part is pressed against the valve seat part side of the base part by some force and is compressed and deformed, it tries to sink into the upstream side of the flow path in the base part than the valve seat part of the base part. When the lower surface of the flap portion comes into contact with the restricting means provided on the upstream side of the flow path, the intrusion of the flap portion is restricted. Therefore, even when a check valve integrally formed of a synthetic resin material that can be elastically deformed is adopted, the inflow of outside air based on the check valve in a closed state is preferably suppressed while the flap portion is submerged. The suppression effect can be obtained more reliably.

  According to a second aspect of the present invention, there is provided the spout device according to the first aspect of the present invention, wherein a drop-off preventing member for preventing the check valve from dropping is provided upstream of the check valve in the flow path. It is arranged, and the drop-off prevention member is provided with a protruding portion as the restricting means extending to the inner region of the base portion of the check valve. According to the said structure, since a control means will be provided in a member different from a non-return valve, the structure of a non-return valve is simplified. Moreover, it becomes easy to form a control means with a material different from a check valve. Since the protruding portion is formed to extend to the inner region of the base portion of the check valve, it is possible to reduce the thickness of the flap portion and to suitably suppress the flap portion from entering.

  According to a third aspect of the present invention, there is provided the spout tool according to the first or second aspect, wherein the spout portion is configured to be separated and assembled into a spout upper portion and a spout lower portion, and the check valve. And the said control means is arrange | positioned at the said extraction | pouring upper part, It is characterized by the above-mentioned. According to the above configuration, by concentrating the configuration related to the suppression of the inflow of outside air on the upper part of the extraction, it is possible to distinguish the other functions and the members provided in the outlet tool, and the member management is easy. Other functions provided in the spout tool include, for example, a capping function that prevents the content portion from flowing out of the flow path, and the spout portion can be separated and assembled into a spout upper portion and a spout lower portion. By doing so, it will be easy to realize multi-functionality of the dispensing part.

  According to a fourth aspect of the present invention, there is provided the spout tool according to the third aspect of the present invention, wherein a blocking wall that closes the flow path is provided at the lower portion of the discharge, and a gas barrier layer is provided on an outer surface of the blocking wall. A tension part for removing at least a part of the blocking wall is provided on the inner surface of the wall. According to the said structure, in the state before opening of a spout tool, ie, the state before removing the obstruction | occlusion wall in a pouring lower part, the external air penetration | invasion into a container via a spout tool can be suppressed suitably. . Moreover, the opening of the spout tool can be easily realized by using a tension part.

  According to the spout device of the present invention, in the spout device having a check valve integrally formed of a synthetic resin material that can be elastically deformed as a whole, the submergence of the check valve flap portion is restricted and opened. The effect of suppressing the inflow of outside air can be more reliably obtained regardless of the presence or absence.

(A) is a perspective view of a spout tool, (b) is sectional drawing of a spout tool. Bottom view of the bottom of the extraction (A) is a perspective view of a check valve, (b) is a sectional view of the check valve. (A) is a perspective view of a dropout prevention member, (b) is a cross-sectional view of the dropout prevention member. Sectional drawing of the spout tool after an opening process.

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 provided with the extraction | pouring part 2 which forms a flow path in an inner region. 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 FIG.1 and FIG.2, the attachment part 3 for attaching the spout tool 1 to the opening part of a container is protrudingly provided in the lower position of the outer peripheral surface of the extraction | pouring lower part 10. As shown in FIG. The mounting portion 3 is formed of a substantially rhombic plate-shaped mounting upper wall 3a projecting 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 attachment part 3 front-end | tip 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 with the pouring upper portion 20 is provided at the upper position of the outer peripheral surface. Yes.

  As shown in FIGS. 1B and 2, a thin wall portion 11 a formed by forming a groove from the upper surface (inner surface) side of the closing wall 11 is formed in the closing wall 11 that closes the lower end of the dispensing lower portion 10. Is provided. The thin-walled 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 which has the tension | pulling ring 14a in the upper end is connected to the inner position of the bulging part in the thin part 11a. The height of the tension portion 14, that is, the height position of the tension ring 14 a is set so as to be substantially the same as or higher than the upper end of the extraction lower 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 at the outer peripheral position, and a dome-like bulging portion 23 bulging upward is formed at the center portion thereof. A spout 24 is provided at the center of the bulging portion 23, and an annular peripheral wall 25 is provided around the spout 24 on the outer surface side of the bulging portion 23 to prevent dripping. Has been.

  On the inner peripheral surface of the dispensing upper portion 20, a female screw 26 is provided as an engaging portion with 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 formation position is set so that it may be accommodated between the inner peripheral surface of this and the outer peripheral surface of the tension ring 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. Two step portions (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 inner peripheral surface of the support wall 28 is gradually stepped toward the tip side in both step portions. The shape expands. 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 dropping 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 FIGS. 3A and 3B, the check valve 30 is a swing type that includes a cylindrical base portion 31 that forms a flow path in the inner region and a flap portion 32 that closes the upper end opening of the base portion 31. The check valve is integrally formed of an elastically deformable soft synthetic resin material (for example, silicon rubber). The base 31 is a cylindrical member that forms a channel with a circular cross section in the inner region, and the outer diameter of the base 31 is between the first step portion 28a and the second step portion 28b in the support wall 28 of the dispensing upper portion 20. It is equal to the inner diameter of the part.

  The flap portion 32 is a block-shaped lid member having a circular cross section, and the upper surface portion is formed to be larger than the flow path cross section of the base portion 31 and the lower surface portion is formed to be smaller than the flow path cross section. Is formed in a tapered shape that gradually decreases in diameter from the upper surface side toward the lower surface side. A connecting portion 33 that connects the flap portion 32 and the base portion 31 is provided between the upper portion of one side surface (a surface that forms a straight portion of a missing circle) in the flap portion 32 and the upper end portion of the base portion 31.

  Since the connecting portion 33 functions as a base point (hinge), the flap portion 32 can rotate 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. It has become. The closed position is a position where the valve seat part 31a (the entire upper end opening edge) of the base 31 is in contact with the flap part 32, and the open position is the flap part 32 upward with the connecting part 33 as a base point. It is a position that rotates and is separated from the valve seat 31 a of the base 31. As shown in FIG. 3B, the lower surface of the flap portion 32 is located in the inner region (in the flow path) of the base portion 31 in the closed position.

  As shown in FIGS. 4A and 4B, the dropout prevention member 40 is an annular member that forms a flow path in the inner region. The outer diameter of the dropout prevention member 40 is equal to 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. Further, 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 regulating projection as a regulating means that extends upward at the upper central position of the bridging wall 42. 43 (protrusion part) is provided.

  As shown in FIG. 1B, the check valve 30 is a first valve in the inner region of the support wall 28 in a state where the upper end portion of the base 31 is in contact with the first step portion 28 a of the support wall 28. It is accommodated in a region between the step portion 28a and the second step portion 28b. On the other hand, the drop-off prevention member 40 has the second upper portion 28b of the support wall 28 and the lower end portion of the base 31 of the check valve 30 in contact with each other in the inner region of the support wall 28 with its upper surface in contact. It is accommodated in a region between the two-step portion 28b and the tip portion. 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 the state where the check valve 30 and the drop-off prevention member 40 are accommodated in the support wall 28, the restriction projection 43 provided on the drop-off prevention member 40 is located in the inner region of the base 31 of the check valve 30, and the The front end is in contact with the lower surface of the flap portion 32 in the closed position.

  As shown in FIGS. 1A and 1B, 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. 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 a code | symbol is abbreviate | omitted, it is the protrusion-like shape for engaging with each other and holding 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 addition, in parts other than the check valve 30 in the above-described spout tool 1 (attachment portion 3, spout lower portion 10, spout upper portion 20, cap portion 50, and dropout prevention member 40), spout tools such as spouts are provided. The well-known synthetic resin material generally 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.

  Moreover, as shown in FIG.1 (b), the gas barrier film 60 as a gas barrier layer is affixed on the whole lower surface of the extraction | pouring lower part 10. FIG. As the gas barrier film 60, for example, a multilayer resin sheet having an aluminum foil layer, an ethylene vinyl-alcohol copolymer layer, a ceramic vapor deposition film layer, or the like as a gas barrier layer can be used. Further, in the gas barrier film 60, a half cut 61 having the same shape as the thin portion 11a is formed at a portion located below the thin portion 11a formed in the closing wall 11 of the extraction lower portion 10. In addition, illustration of the gas barrier film 60 is abbreviate | omitted in FIG.

  An example of a method for attaching the gas barrier film 60 to the dispensing lower portion 10 will be described below. As the gas barrier film 60, a multilayer resin sheet having a three-layer structure including a base material layer, a gas barrier layer laminated on the lower surface side of the base material layer, and a heat sealing layer laminated on the upper surface side of the base material layer is used. Use. The multilayer resin sheet has a long shape and is arranged in a state of being wound into a roll. The multilayer resin sheet drawn out from the roll is provided in the pouring lower part 10 of the spout tool 1 through an adhesion process and a cutting process.

  In the bonding step, first, the multilayer resin sheet is supplied to the production line with the heat-fusible layer on the lower side. Moreover, the receiving jig which can hold | maintain the some spout tool 1 in the state which faced the obstruction | occlusion wall 11 side of the extraction | pouring lower part 10 upward is arrange | positioned in the downward position of a multilayer resin sheet. Then, a plurality of spout tools 1 are held in the receiving jig, and the bottom surface portion of each spout tool 1 (specifically, the blocking wall of the spout lower portion 10 is used by using heat welding means such as a seal bar. 11 and the lower edge of the attachment side wall 3b in the attachment portion 3) and the multilayer resin sheet are thermally welded simultaneously.

  In the cutting process, the outer peripheral portion is cut by irradiating a laser along the edge of the attachment portion 3 of each spout tool 1 to the multilayer resin sheet on which the spout tool 1 is thermally welded. Further, a half-cut 61 is formed by irradiating a laser having a small output to a position corresponding to the thin wall portion 11 a provided on the blocking wall 11 of the pouring lower portion 10 in the multilayer resin sheet. After the cutting step, the multi-layer resin sheet is wound up, so that the spout tool 1 with the multi-layer resin sheet (gas barrier film 60) having the half cut 61 is left in the receiving jig.

Next, the operation of this embodiment will be described.
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). And it will be in the state which can pour the contents out of the container by performing the following opening processes. First, the pouring upper portion 20 is rotated to remove the pouring upper portion 20 and the cap portion 50 from the pouring lower portion 10. Next, by grasping the pulling ring 14a of the pulling part 14 and pulling it upward, the thin part 11a of the blocking wall 11 and the half cut 61 of the gas barrier film 60 are torn and the lower end of the pouring lower part 10 is opened. Then, by attaching the extraction | pouring upper part 20 and the cap part 50 to the extraction | pouring lower part 10, it will be in the state shown in FIG.

  When the cap 50 is opened and the container is tilted after the opening of the spout 1 as described above, as shown in FIG. It passes through the inner flow path and reaches the check valve 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.

  Further, when the container is returned from the tilted state to the original state, the pressing 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 is in contact with the tip of the restriction projection 43 provided on the drop-off preventing member 40 in the inner region of the base portion 31, and the flap portion into the base portion 31 beyond that. 32 subsidence is regulated. 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 comes to be in a closed position that closes the flow path in the base part 31. Thereby, even after the opening process, the check valve 30 that is in a closed state except when the contents are poured out is present in the flow path of the dispensing unit 2. Inflow of outside air into the container through the flow path can be suitably suppressed by the check valve 30.

Next, operational effects in the present embodiment will be described below.
(1) A swing-type check valve 30 is disposed in the flow path of the extraction portion 2. And when the container which attached the spout tool 1 is inclined and the pouring pressure of the content acts on the flap part 32 of the check valve 30, the flap part 32 rotates from the closed position to the open position, and the check valve 30 becomes an open state, and the flap portion 32 is in the closed position and the check valve 30 is closed except when the contents are poured out. 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) As the check valve 30, a one-piece formed of an elastically deformable soft synthetic resin material (for example, silicon rubber) is used. According to the said structure, while being easy to manufacture, the manufacturing cost can also be restrained low.

  (3) In the flow path of the dispensing part 2 (the dispensing upper part 20), the flap comes into contact with the lower surface of the flap part 32 at a position upstream of the valve seat part 31a of the base part 31 of the check valve 30. A restricting protrusion 43 is provided for restricting the entry of the portion 32 into the base 31. According to the above configuration, the flap portion 32 is pressed against the valve seat portion 31a side of the base portion 31 by some force, and tries to sink into the upstream side of the flow path in the base portion 31 over the valve seat portion 31a while being compressed and deformed. In addition, when the lower surface of the flap portion 32 comes into contact with the restriction protrusion 43, the penetration of the flap portion 32 is restricted. Thereby, even when the check valve 30 integrally formed of a synthetic resin material that can be elastically deformed is employed, the check valve 30 in a closed state is suppressed by suitably suppressing the submergence of the flap portion 32. The effect of suppressing the inflow of outside air can be obtained more reliably.

  (4) A restricting projection 43 as a restricting means is provided for the drop-off preventing member 40 which is a member different from the check valve 30. According to the above configuration, the configuration of the check valve 30 is simplified. Further, the restricting means can be formed of a material different from that of the check valve 30 (for example, a material harder than the soft synthetic resin material forming the check valve 30).

  (5) The restricting protrusion 43 provided on the drop-off preventing member 40 is formed so as to extend 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 is formed thinly, the penetration | invasion of the flap part 32 can be suppressed suitably. Therefore, it is possible to easily reduce the thickness of the flap portion 32.

  (6) The pouring portion 2 is configured to be separable and assembled into the pouring upper portion 20 and the pouring lower portion 10, and the drop-off prevention member 40 including the check valve 30 and the restriction protrusion 43 is disposed on the pouring upper portion 20. Yes. According to the above configuration, the check valve 30 and the restricting projection 43 (drop-off preventing member 40) that are configurations related to the suppression of the inflow of outside air are concentrated on the extraction upper portion 20, thereby eliminating the configuration regarding the suppression of the inflow of outside air. It becomes easy to give other functions to the pouring lower part 10 side and to make the pouring tool 1 multifunctional. In addition, in this embodiment, the plugging function (blocking wall 11 and the tension | pulling part 14) which prevents a content part from flowing out from a flow path is provided to the extraction | pouring lower part 10 as said other function. 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.

  (7) A closing wall 11 that closes the flow path is provided at the lower end of the pouring 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 layer 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.

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

  The specific configuration of the check valve 30 is not particularly limited as long as it includes the base portion 31 and the flap portion 32 and is integrally formed of an elastically deformable synthetic resin material. For example, in the embodiment described above, the flap portion 32 is provided at the upper end position of the base portion 31, but a step portion is provided at an intermediate position in the flow path of the base portion 31, and this step portion serves as a valve seat portion 31 a. 32 may be provided at an intermediate position in the base 31.

  The position where the restricting means is provided, that is, the contact position between the restricting means and the flap portion 32 of the check valve 30 is not limited to the inner region of the base portion 31, but is located upstream of the valve seat portion 31 a in the flow path. If so, the same regulating action as in the above embodiment can be obtained.

  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. The “lower surface of the flap portion” described in the claims is a technical concept including a surface other than the upper surface of the flap portion, for example, a side surface formed in a tapered shape.

  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 restriction projection 43, and the lower surface of the flap portion 32 and the restriction projection when the flap portion 32 is rotated further inward than the closed position. The structure which 43 and contact | abut 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 dive.
-You may provide a control means in members other than the drop-off prevention member 40. FIG. For example, another member having a restricting means may be disposed between the check valve 30 and the drop-off preventing member 40, or a protruding portion as a restricting means on the inner circumferential surface of the base 31 of the check valve 30. Alternatively, a cross-linked portion may be provided. When the check valve 30 is provided, it may be formed integrally with the base 31 or other members such as pins may be arranged.

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.
The pouring part 2 may be configured to be separated and assembled into a plurality of three or more members, or may be formed integrally with one member. When the pouring part 2 is integrally formed of one member, the blocking wall 11 and the tension part 14 are omitted.

  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 portion 10, it can be achieved by adjusting the connection length between the pouring lower portion 10 and the pouring upper portion 20, for example. Moreover, when providing in the flow path of the extraction | pouring lower part 10, if the part where a flow path internal diameter becomes a small diameter and the part which becomes a 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.

  -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, the half cut 61 of the gas barrier film 60 may be omitted.

  -It is good also as a structure which 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.

  -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 goes without saying that the mounting portion 3 can be appropriately changed in accordance with the shape of the container, for example, a simple flange shape.

  -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 that moves from the closed position to the open position 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.

  -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.

DESCRIPTION OF SYMBOLS 1 ... Outlet tool, 2 ... Outlet part, 3 ... Mounting part, 10 ... Outlet part, 11 ... Blocking wall, 14 ... Tensile part, 20 ... Outlet part, 30 ... Check valve, 31 ... Base part, 31a ... valve seat part, 32 ... flap part, 40 ... drop-off prevention member, 43 ... regulating protrusion.

Claims (4)

A spout tool comprising a pouring part that forms a flow path, and an attachment part that is formed protruding from the pouring part,
Between a cylindrical base and a closed position connected to the base and contacting the valve seat of the base to close the opening of the base, and an open position spaced apart from the valve seat and opening the opening In the spout tool, which is composed of a rotatable flap portion, and a check valve integrally formed of an elastically deformable synthetic resin material is disposed in the flow path of the spout portion,
The spout device according to claim 1, further comprising: a regulating means that abuts on a lower surface of the flap portion and regulates a dive of the flap portion upstream of the valve seat portion.   A drop-off prevention member for preventing the check valve from falling off is disposed upstream of the check valve in the flow path, and the drop-off prevention member includes an inner area of the base portion of the check valve. The spout tool according to claim 1, wherein a protruding portion as the restricting means extending to is provided.   The said extraction | pouring part is comprised so that isolation | separation and assembly are possible for the extraction | pouring upper part and the extraction | pouring lower part, The said check valve and the said control means are arrange | positioned at the said extraction | pouring upper part. Item 5. The spout tool according to Item 2. The pouring lower portion is provided with a blocking wall for closing the flow path,
The spout tool according to claim 3, further comprising a gas barrier layer on an outer surface of the blocking wall, and a tension portion for removing at least a part of the blocking wall on an inner surface of the blocking wall.

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