JP2005298008A - Outlet member and liquid storage bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate handling of a storage bag, in which liquid stored in a liquid storage bag is poured out by a spout member.
A bag body 3 is formed by combining a side wall 5 and a bottom wall 6 made of a film-like member. The spout member 4 is thermally welded to the side wall 5 of the bag body 3. The tubular body 7 of the spout member 4 is divided into an upstream member and a downstream member. A valve seat is formed by forming a circular hole in the end wall of the upstream member. A valve body is integrally formed on the inner surface of the downstream member via a belt-like support portion. In a state where the downstream member is assembled to the upstream member, a biasing force is applied to the valve body by the support portion so that the valve body is pressed against the valve seat. When the side wall 5 of the bag body 3 is held by hand, the urging force of the support portion is set so as to resist the force caused by the liquid received by the valve body.
[Selection] Figure 2

Description

  The present invention relates to a spout member for pouring out a liquid stored in a liquid storage bag and a liquid storage bag including the spout member.

  In general, for example, after the liquid detergent contained in a container made of hard resin is used up, the liquid detergent contained in the liquid container for refilling is refilled into the hard container. By doing so, the hard container can be reused, and the liquid storage bag can be discarded after being folded small, thereby reducing the amount of dust.

As this type of liquid storage bag, a plurality of resin film-like members are stacked, and the corresponding peripheral edges of these film-like members are thermally welded to form a storage bag body, and the liquid stored in this storage bag body Is provided with a spout member (see, for example, Patent Documents 1 and 2). In these things, a spout member is arrange | positioned at the upper part of a storage bag main body, and the refilling work can be easily performed by inserting this spout member into a container.
JP-A-5-132069 (page 4, FIG. 1) JP 2000-238800 A (page 3, FIG. 1, FIG. 2, FIG. 4)

  However, in the liquid storage bags of Patent Documents 1 and 2, since the storage bag body is composed of a film-like member, the storage bag body is deformed when held by hand or tilted, and the liquid inside is poured. Leak through the outlet member. For this reason, care must be taken in the position and how to hold the liquid storage bag, and the handling becomes troublesome.

  The present invention has been made in view of such points, and an object of the present invention is to facilitate the handling of the liquid storage bag by preventing the liquid in the liquid storage bag from leaking through the spout member. It is in.

  In order to achieve the above object, in the present invention, the spout member is provided with a valve seat and a valve body seated on the valve seat, and the valve body is seated on the valve seat with a predetermined urging force.

  Specifically, the invention of claim 1 is an invention of a spout member, which is a spout member provided by heat welding to a liquid storage bag for storing a liquid, and has a tubular shape having a flow passage through which the liquid flows. And the tubular body is configured to be heat-welded to the housing bag, and the tubular body is biased in the direction of seating on the valve seat to close the flow passage. And a biasing force of the valve body is set such that the valve body is separated from the valve seat when liquid is poured out.

  According to this configuration, the cylindrical body is thermally welded to the storage bag, and it is possible to prevent the liquid inside from leaking between the cylindrical body and the storage bag. Further, when handling the storage bag provided with the spout member, for example, when holding the side wall of the storage bag, the liquid in the storage bag tends to flow to the outside through the flow path, and the pressure of the liquid causes a valve. The body is subjected to force away from the valve seat. At this time, since the valve body is biased in the seating direction, the valve body is not displaced in the direction away from the valve seat, and the flow path is held in a closed state. There is no leakage through the member.

  On the other hand, if the side wall of the containing bag is pressed relatively strongly when liquid is poured out, the force that the valve body receives from the liquid becomes greater than the urging force in the seating direction of the valve body. As a result, the valve body is displaced in a direction away from the valve seat to open the flow passage, and the liquid in the containing bag is poured out.

  According to a second aspect of the present invention, the spout member is provided by being thermally welded to a liquid storage bag for storing a liquid, and includes a cylindrical body having a flow passage through which the liquid flows. A welding base, a valve seat, and a valve body that is biased in the direction of seating on the valve seat and closes the flow passage are provided, and the biasing force of the valve body is such that when the liquid is poured out, the valve body Is configured to be separated from the valve seat.

  According to this configuration, since the heat welding base is thermally welded to the storage bag, the spout member is firmly attached to the storage bag and prevents the liquid inside from leaking between the cylindrical body and the storage bag. It becomes possible. Similarly to the first aspect of the invention, when handling a storage bag provided with a spout member, the liquid in the storage bag is prevented from leaking through the spout member, and the liquid is discharged. The liquid in the liquid storage bag is poured out from the cylindrical body.

  According to a third aspect of the invention, in the first or second aspect of the invention, the valve seat is provided in a midway portion of the flow passage in the liquid flow direction, while the valve body is downstream of the valve seat in the liquid flow direction. And a biasing means for biasing the valve body upstream in the liquid flow direction and seating on the valve seat.

  According to this configuration, the valve body can be seated on the valve seat by the biasing means while the valve seat and the valve body are positioned inside the cylindrical body.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the cylindrical body is formed by molding a resin material, and the valve body and the biasing means are integrally formed with the cylindrical body.

  According to this configuration, it is possible to reduce the number of parts and reduce the man-hours for manufacturing the spout member. Further, since the urging means is made of a resin material, it is possible to urge the valve body using the elasticity of the resin material.

  In the invention of claim 5, in the invention of claim 4, the cylindrical body is a combination of an upstream member and a downstream member divided in the liquid flow direction, and the valve seat is integrated with the upstream member. The valve body and the urging means are formed integrally with the downstream member.

  According to this configuration, the valve seat, the valve body, and the urging means can be formed separately.

  According to a sixth aspect of the present invention, in the fourth aspect of the present invention, the two halves divided in half in the radial direction of the cylindrical body are integrally formed of a resin material, and the open sides of the two halves are combined to form the above A cylindrical body is configured, and the valve body and the urging means are integrally formed in one half.

  According to this configuration, it is possible to reduce the number of parts and reduce the man-hours for manufacturing the spout member.

  The invention of claim 7 is an invention of a liquid containing bag, and the spout member according to any one of claims 1 to 6 is heat-welded to a bag body made of a film-like member.

  According to this configuration, similarly to the first and second aspects of the invention, when the storage bag is handled, the liquid in the storage bag is leaked through the spout member while being held in a state where the flow passage is closed. In addition, when the liquid is poured out, the liquid in the containing bag is poured out with the flow path opened.

  According to an eighth aspect of the present invention, in the seventh aspect of the present invention, the bag body is provided with a cover portion for sealing the cylindrical body.

  According to this configuration, until the liquid is poured out, it is avoided that the cylindrical body is sealed by the cover portion and touches external air or the like.

  According to the ninth aspect of the present invention, in the eighth aspect of the present invention, the cover portion is provided with a fragile portion.

  According to this configuration, the cover portion can be cut off by breaking the film-like member starting from the fragile portion.

  According to the first aspect of the present invention, since the cylindrical body of the spout member is configured to be heat weldable to the storage bag, it is possible to prevent the liquid inside from leaking between the cylindrical body and the storage bag. . The tubular body is provided with a valve seat and a valve body biased in the direction of seating on the valve seat, and a biasing force is set so that the valve body is separated from the valve seat when liquid is poured out. Therefore, when handling a storage bag provided with this spout member, it is possible to prevent liquid from leaking through the spout member, and the position of holding the storage bag and the degree of freedom of holding are improved. The bag can be handled easily.

  According to the invention of claim 2, as in the invention of claim 1, it is possible to prevent the liquid inside from leaking between the cylindrical body and the containing bag, and when spouting the containing bag, the spout The liquid can be prevented from leaking through the member, and the containing bag can be easily handled.

  According to the invention of claim 3, the valve seat is provided in the middle of the flow passage in the liquid flow direction, the valve body is provided on the downstream side of the liquid flow from the valve seat, and the valve body is urged by the urging means. The flow passage can be reliably closed while the valve seat and the valve body are accommodated in the cylindrical body and the spout member is made compact.

  According to invention of Claim 4, since the valve body and the urging | biasing means were integrally molded by the resin-made cylindrical body, while being able to reduce a manufacturing man-hour, urging | biasing force is made to act on a valve body, without providing an additional member. Therefore, the cost of the spout member can be reduced.

  According to the invention of claim 5, the cylindrical body is divided into the upstream member and the downstream member, the valve seat is integrally formed on the upstream member, and the valve body and the biasing means are integrally formed on the downstream member. Therefore, the valve seat, the valve body, and the urging means can be formed by separate molding surfaces, and the degree of freedom of setting each shape can be increased.

  According to the sixth aspect of the present invention, the two integrally formed halves are combined to form a cylindrical body, and the valve body and the biasing means are integrally formed in one half, so that the number of parts can be reduced. And the cost of the spout member can be reduced.

  According to the seventh aspect of the invention, similarly to the first aspect of the invention, it is possible to prevent liquid from leaking from the spout member when handling the storage bag, so that the storage bag can be handled easily.

  According to the invention of claim 8, since the cylindrical body is sealed by the covering portion, for example, when the cylindrical body is sterilized using the storage bag as a medical solution storage bag, the cylindrical body is discharged until the chemical liquid is poured out. Can maintain the sterilized state of the body.

  In the invention of claim 9, since the fragile portion is provided in the cover portion, the cover portion can be easily cut off.

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

Embodiment 1 of the Invention
FIG. 2 shows a liquid storage bag 1 according to the present invention. The liquid storage bag 1 can store, for example, a liquid detergent, a seasoning, drinking water, a chemical solution, or the like as a liquid.

  The storage bag 1 includes a self-supporting bag body 3 having a rectangular shape in a side view and a bottom wall portion formed in a substantially circular shape, and the present invention disposed near the upper corner of the bag body 3. The spout member 4 is provided. The bag body 3 includes two side walls 5 made of a film-like member and a bottom wall 6 made of a similar film-like member. As the film-like member constituting the side wall 5 and the bottom wall 6, a film having at least an innermost layer having heat welding properties is used. Specifically, a two-layer structure in which a sealant layer having heat-weldability such as polyethylene or polypropylene and an outer layer made of a stretched film such as a biaxially stretched nylon film or a biaxially stretched polyethylene terephthalate film are laminated. It is possible to use three or more layers in which a metal foil, paper, an inorganic vapor deposition layer, an ethylene-vinyl alcohol copolymer layer or the like is sandwiched between them. A plurality of these layers may be used. For such lamination, a lamination method such as dry lamination or extrusion lamination is suitably used.

  The side walls 5 are overlapped and the corresponding edge portions are thermally welded to each other, and the peripheral edge of the bottom wall 6 is heat welded to the lower edges of the side walls 5. When liquid is stored in the storage bag 1, the bottom wall 6 expands substantially horizontally, and the bag body 3 expands toward the lower side so that a standing posture can be maintained. That is, the storage bag 1 is a so-called standing pouch (self-supporting packaging bag).

  As shown in FIG. 1, the spout member 4 includes a cylindrical body 7 formed by molding a resin material such as polyethylene or polypropylene into a cylindrical shape having both ends open. The resin constituting the cylindrical body 7 needs to be able to be thermally welded to the bag body 3, and at least a part of the resin is preferably the same resin as the sealant layer of the bag body 3. That is, when the sealant layer of the bag body 3 is polyethylene, at least a part of the cylindrical body 7 is preferably polyethylene, and when the sealant layer of the bag body 3 is polypropylene, at least the cylindrical body 7 is It is preferable that a part is polypropylene. The shape and size of the cylindrical body 7 are not particularly limited and can be designed according to the purpose. Usually, a cylindrical shape is frequently used, the outer diameter is set to about 3 to 30 mm, the wall thickness is set to about 0.3 to 5.0 mm, and it is formed more difficult to deform than the side wall 5.

  Although not provided in the spout member 4 of FIG. 1, as shown in FIGS. 2 to 4, the tubular body 7 is integrally formed with a heat welding base F extending radially from the outer peripheral surface. ing. The heat welding base F extends in a boat shape relatively large in one direction in the radial direction and in a direction opposite to the one direction, and the side surfaces of the heat welding base F are heat-welded to the side walls 5. This makes it possible to reliably prevent liquid leakage from between the spout member 4 and the side walls 5. It is preferable to form grooves and ridges on the side surface of the heat welding base F in order to make heat welding more reliable.

  The heat welding base is not sandwiched between the side walls 5, but when the side wall 5 is perforated and the tubular body 7 is projected from the inside of the bag body 3, it is preferable to use a disk-like heat welding base. .

  As shown in FIG. 1, the opening located at the lower end of the spout member 4 communicates with the interior of the bag body 3 and serves as an inlet 9 for introducing liquid into the flow passage 8 inside the spout member 4. On the other hand, the opening located at the upper end of the spout member 4 is a spout 10 for pouring the liquid introduced into the flow passage 8 to the outside.

  Further, the upper side of the side wall 5 above the spout member 4 is formed so as to cover the spout 10 of the spout member 4 as shown in FIG. 2 and FIG. The cover portion 13 is configured by this portion, and the cylindrical body 7 is sealed. The covering portion 13 is formed with a weak portion 14 formed of a thin portion such as a perforation formed by leaving at least a part of the sealant layer or a half cut by a laser beam, and both side walls are formed along the weak portion 14. The cover 13 can be cut off by breaking 5.

  Thus, when food, a medicine, etc. are accommodated by covering cylindrical body 7 of spout member 4, spout member 7 can be sterilized with the sterilization of the inner solution, and spout until it is opened. 10 hygiene can be ensured.

  As shown in FIG. 1, the cylindrical body 7 is a combination of an upstream member 15 and a downstream member 16 that are divided in the liquid flow direction that is the center line direction. The length of the upstream member 15 in the center line direction is set shorter than the length of the downstream member 16 in the center line direction. The outer diameter of the upstream member 15 on the inlet 9 side is set to be substantially the same as the outer diameter of the downstream member 16, while the outlet 10 side of the upstream member 15 has the outer diameter of the downstream member 16. The small-diameter portion 15a is set to be substantially the same as the inner diameter, and the downstream side member 16 is fitted on the small-diameter portion 15a. A plurality of protrusions 15b that are continuous or intermittent in the circumferential direction are formed on the outer peripheral surface of the small-diameter portion 15a of the upstream member 15, while the protrusions of the small-diameter portion 15a are formed on the inner peripheral surface of the downstream member 16. A recess 16a is formed corresponding to 15b, and the protrusion 15b and the recess 16a are engaged with each other.

  The upstream member 15 is provided with a valve seat 21, and the valve seat 21 is circular at a substantially central portion of a flat end wall portion 22 formed integrally with the end portion of the upstream member 15 on the outlet 10 side. The hole portion 23 is formed. The end wall portion 22 extends substantially orthogonal to the center line of the spout member 4, and the inner peripheral surface of the hole portion 23 is a tapered surface whose diameter increases toward the spout 10 side of the end wall portion 22. Is formed. Further, the outer peripheral edge 22a of the end wall portion 22 is chamfered so that the downstream member 16 can be easily fitted on the small diameter portion 15a.

  A valve body 25 seated on the valve seat 21 is provided inside the downstream member 16. The valve body 25 has a shape that approximates the lower half of the sphere, and a recess is formed in the substantially central portion of the upper surface. As shown in FIG. 3, the valve body 25 is supported on the inner surface of the downstream member 16 via three support portions 26 provided at substantially equal intervals in the circumferential direction of the downstream member 16. This support part 26 is an urging means of the present invention. Each support portion 26 is formed in an elongated band shape that curves upward from the upper end portion of the valve body 25 and extends toward the inner surface of the downstream member 16, and both end portions thereof are the inner surfaces of the valve body 25 and the downstream member 16. Are integrally molded. And by fitting the downstream member 16 to the upstream member 15, the protrusion 15 b of the upstream member 15 engages with the recess 16 a of the upstream member 16, and both the members 15, 16 are integrated, The valve body 25 contacts the valve seat 21.

  The support portion 26 is formed so as to apply a biasing force toward the valve seat 21 with respect to the valve body 25, and normally, the valve body 25 is pressed against the valve seat 21 and the flow passage 8 is closed. . The biasing force applied to the valve body 25 by the support portion 26 is such that the liquid in the bag main body 3 does not leak from the spout member 4 when the containing bag 1 is handled, and the spout member 4 when the liquid is poured out. It is set so that liquid can be poured out smoothly.

  That is, when the storage bag 1 is handled, the side wall 5 may be held by hand or the storage bag 1 may be tilted. At this time, the liquid stored in the storage bag 1 is flowed through the outlet member 4. It tries to flow toward the spout 10 through 8. Due to the pressure of the liquid, as shown by an arrow A in FIG. 1, the valve body 25 receives a force in a direction away from the valve seat 21 that is downstream in the liquid flow direction. In this case, by setting the urging force by the support portion 26 so that the valve body 25 does not move away from the valve seat 21, the closed state of the flow passage 8 is maintained and liquid leakage from the spout member 4 is prevented. . This urging force is set so that the valve body 25 is not separated from the valve seat 21 by the force received from the liquid when the containing bag 1 falls.

  On the other hand, when the liquid is poured out, the pressure of the liquid that tends to flow toward the spout 10 is reduced by the person performing the pouring by pressing the side wall 5 of the containing bag 1 relatively strongly. In this case, the valve body 25 receives a relatively large force. In this case, by setting the urging force by the support portion 26 so that the valve body 25 is separated from the valve seat 21, a gap is generated between the valve body 25 and the valve seat 21 only in the case of pouring, and the liquid is poured out. It becomes possible. The urging force can be arbitrarily set depending on the thickness, shape, number, etc. of the support portion 26.

  Therefore, according to this embodiment, the valve body 25 is pressed against the valve seat 21 with the urging force as described above when the container bag 1 is moved while being held or the container bag 1 is tilted. Therefore, the flow path 8 is held in a closed state, and liquid can be prevented from leaking from the spout member 4. Thereby, while the freedom degree of the position and holding method of the storage bag 1 improves, the freedom degree of the attitude | position when moving the storage bag 1 also improves, and handling of the storage bag 1 can be made easy. Furthermore, even when the containing bag 1 falls down, liquid leakage from the spout member 4 can be prevented.

  For example, when refilling the liquid into another container, after inserting the spout 10 side of the spout member 4 into the opening of the container, the flow path 8 is formed by pressing the side wall 5 of the containing bag 1 relatively strongly. The liquid is poured out from the spout member 4 in the open state, and can be refilled. Further, at the time of refilling, since the spout member 4 is configured to be less deformable than the side wall portion 5, it is prevented from being deformed so that the liquid flow path 8 is narrowed, and the liquid is refilled smoothly. be able to. Further, the force that the valve body 25 receives from the liquid in the case of handling differs depending on the capacity of the containing bag 1 and the like, but the support portion 26 may be formed so as to obtain an urging force according to the force that the valve body 25 receives. it can.

  Further, since the valve body 25 and the support portion 26 are integrally formed on the inner surface of the spout member 4, the number of parts can be reduced and the number of manufacturing steps of the spout member 4 can be reduced. Furthermore, since the support part 26 is shape | molded with the resin material, the valve body 25 can be urged | biased using the elasticity which a resin material has, without providing a separate member. By these things, the cost of the spout member 4 and the accommodation bag 1 can be reduced.

  Further, since the valve seat 21 is integrally formed with the upstream member 15 and the valve body 25 and the support portion 26 are integrally formed with the downstream member 16, the valve seat 21, the valve body 25 and the support portion 26 are separately formed. It becomes possible to form on the surface, and the degree of freedom of setting each shape can be increased.

<< Embodiment 2 of the Invention >>
FIGS. 5 and 6 show the spout member 4 according to the second embodiment of the present invention. Although not shown, the bag body 3 of the second embodiment is the same as that of the first embodiment. Description of the main body 3 is omitted, and only the structure of the spout member 4 will be described.

  The cylindrical body 7 of the spout member 4 is formed by integrally molding a first half 40 and a second half 41 that are halved in the radial direction with a resin material with a thin hinge 42 interposed therebetween. The first half 40 and the second half 41 are rotated around the thin hinge 42 so that the open sides of both halves 40 and 41 are combined. A substantially flat piece 43 is formed at the center of the edge of the first half 40 opposite to the thin hinge 42, and a circular protrusion is formed at the substantially center of the outer surface of the piece 43. 43a is formed. Further, a flat portion 44 is formed at the edge of the second half 41 opposite to the thin hinge 42 so as to be positioned on the outer surface side of the piece 43 in a state where both halves 40 and 41 are combined. An engaging hole 44a for engaging the projection 43a is formed at a portion of the flat portion 44 corresponding to the projection 43a. By engaging the protrusion 43a with the engagement hole 44a in a state where the first half 40 and the second half 41 are combined, the both halves 40 and 41 are held without being separated from each other. The same inlet and outlet are formed.

  On the inlet side (lower side of FIGS. 5 and 6) of the inner surfaces of the first half 40 and the second half 41, an arc shape constituting the valve seat 21 in a state where both halves 40, 41 are combined. The parts 45 and 46 are integrally formed. Both arc-shaped portions 45 and 46 are formed in the same manner, and only the one on the first half 40 side will be described. The arc-shaped portion 45 is formed from the inner surface of the first half 40 to the inside of the first half 40. The tip end surface is an arc surface 45a, and when the first half body 40 and the second half body 41 are combined, a circular hole is formed by both arc surfaces 45a and 46a. . Moreover, the circular arc surfaces 45a and 46a of each circular arc part 45 and 46 are formed in the inclined surface which approaches the inner surface of the half bodies 40 and 41, so that it goes to the spout side (upper side of FIG.5 and FIG.6).

  A cutout portion 48 directed toward the inlet is formed at the edge of the second half 41 on the outlet side, and a valve body 25 that contacts the valve seat 21 is formed at the bottom edge of the cutout portion 48. It is provided via a support portion 26 as urging means. The support portion 26 has a first rod-like portion 51 having one end connected to the bottom edge of the notch 48 via a thin-walled hinge 50, and a thin-walled hinge 52 connected to the other end of the first rod-like portion 51. The two thin-walled hinges 50 and 52 are also constituent elements of the support portion 26.

  As shown in FIG. 6, the valve body 25 is formed in a disk shape extending in the radial direction of the spout member 4, and the surface of the valve body 25 on the connection side with the second rod-shaped portion 53 is formed substantially flat. On the other hand, as shown in FIG. 5, the opposite surface has a convex surface formed such that the central portion of the valve body 25 is thicker than the peripheral portion, and this convex surface is in contact with the valve seat 21.

  The shape of the thin hinges 50 and 52 of the support portion 26 is set so that the urging force toward the valve seat 21 acts on the valve body 25, and the valve body 25 is attached to the valve seat 21 as in the first embodiment. The flow path 8 is closed by pressure contact. The urging force to the valve body 25 by the support portion 26 is set in the same manner as the urging force by the support portion 26 of the first embodiment. The setting of the urging force depends on the shape and thickness of the thin hinges 50 and 52. It is possible to carry out arbitrarily.

  Next, the manufacturing procedure of the spout member 4 will be described. First, as shown in FIG. 5, the first half 40 and the second half 41 are unfolded, and the first rod 51 and the second Each part is formed in a state where the rod-like part 53 extends outward in the center line direction of the spout member 4. After the molding, as shown in FIG. 6, the first rod-shaped portion 51 is folded around the thin hinge 50 to the inside of the second half 41, and the second rod-shaped portion 53 is folded around the thin hinge 52 so that the valve body 25 is The half body 40 is brought into pressure contact with the circular arc surface 45a. Thereafter, although not shown, the first half 40 and the second half 41 are rotated around the thin hinge 42 so that the open sides of both halves 40, 41 are aligned and the protrusion 43a is engaged with the engagement hole 44a. By doing so, the valve body 25 is brought into pressure contact with the valve seat 21 and the spout member 4 is obtained.

  Therefore, according to this embodiment, when handling the storage bag 1 as in the first embodiment, it is possible to prevent liquid from leaking from the spout member 4 and to easily handle the storage bag 1. can do.

  Further, since the first half 40 and the second half 41 are integrally formed, and the valve body 25, the valve seat 21 and the support portion 26 are integrally formed in the half halves 40, 41, the number of parts is reduced and the spout is reduced. The number of manufacturing steps for the member 4 is reduced. Thereby, the cost of the spout member 4 and the accommodation bag 1 can be reduced.

  In the second embodiment, the support portion 26 is formed in a state in which the first rod-like portion 51 of the support portion 26 extends outward in the center line direction of the spout member 4. 7 and FIG. 8, the first rod-like portion 51 is bent inside the second half 41 and the second rod-like portion 53 extends outward in the center line direction of the spout member 4. You may shape | mold in a state. By molding in this way, the valve body 25 can be moved to the arcuate surface 46a by rotating only the second rod-shaped portion 53 around the thin hinge 52 by about 180 degrees, with the first rod-shaped portion 51 being molded after molding. The manufacturing process can be simplified.

  Moreover, you may make it form the bending part 62 in the support part 26 of the spout member 4 like the modification 2 shown in FIG.9 and FIG.10. That is, the support portion 26 includes a protrusion 60 that protrudes radially inward from the inner surface of the second half 41 on the spout side, and a bent portion 62 that is connected to the tip of the protrusion 60 via a thin hinge 61. It is composed of A valve body 25 is integrally formed at the end of the bent portion 62 opposite to the thin hinge 61. As shown in FIG. 10, the bent portion 62 approaches the thin hinge 42 between the first half 40 and the second half 41 from the portion connected to the thin hinge 61 toward the valve body 25. Then, the bent portion 62 is bent and extended to the side opposite to the bent portion. Due to the shape of the bent portion 62, the urging force toward the valve seat 21 acts on the valve body 25. The urging force by the bent portion 62 is set similarly to the urging force of the first embodiment, and can be arbitrarily set depending on the thickness of the bent portion 62 or the like.

  Next, the manufacturing procedure of the spout member 4 will be described. First, as shown in FIG. 9, the bent portion 62 is in the spout member 4 with the first half 40 and the second half 41 deployed. Each part is molded in a state of extending outward in the center line direction. Thereafter, as shown in FIG. 10, the bent portion 62 is bent around the thin hinge 61 so that the valve body 25 is pressed against the arc surface 46a, and then the open sides of the first half 40 and the second half 41 are aligned. By engaging the projection 43a with the engagement hole 44a, the valve body 25 is brought into pressure contact with the valve seat 21, and the spout member 4 is obtained.

  In the first and second embodiments, since the spout 10 of the cylindrical body 7 is covered by the covering portion 13, for example, when the cylindrical body 7 is sterilized by using the storage bag 1 as a chemical storage bag, the transportation is performed. It is possible to avoid the spout 10 of the cylindrical body 7 from coming into contact with outside air or the like from time to time, and the sterilized state of the cylindrical body 7 can be maintained.

  Moreover, since the weak part 14 was formed in the cover part 13, the side wall 5 can be fractured | ruptured along the weak part 14 by pulling the cover part 13, and the cover part 14 can be cut off easily.

  Further, in each of the above embodiments, the valve body 25, the support portion 26, and the valve seat 21 are formed integrally with the spout member 4, but these are formed separately from the spout member 4 and then poured. It may be assembled to the outlet member 4.

  And as a shape of the bag main body 3, you may form so that the site | part periphery where the spout member 4 is welded may be extended in the centerline direction of this spout member 4 like the modification shown in FIG. In this case, it is preferable that the boat-shaped heat welding base F is provided because more reliable heat welding can be performed. The boat-shaped heat welding base F may be provided over substantially the entire length of both side portions of the spout member 4. Further, a plurality of grooves or ridges can be provided in the circumferential direction of the cylindrical body 7 with or without the heat welding base F.

  Furthermore, the arrangement position of the spout member 4 is not limited, and may be set, for example, on the side wall 5 of the bag body 3. In this case, the cylindrical body 7 is provided with a disk-like heat welding base, an opening is formed in the side wall 5, and the cylindrical body 7 is passed through the opening from the inside, and the inner peripheral edge of the opening and the disk-like heat welding base are formed. And may be heat-welded.

  As described above, the spout member and the liquid storage bag according to the present invention can be used for a storage bag body including a film-like member, for example.

It is a longitudinal cross-sectional view of the spout member which concerns on Embodiment 1. FIG. It is a side view of a liquid storage bag. It is the figure which looked at the spout member of FIG. 1 from the spout side. It is a perspective view of a spout member. It is a perspective view which shows the state after shaping | molding of the spout member which concerns on Embodiment 2. FIG. It is a perspective view which shows the state which bent the support part of FIG. FIG. 6 is a diagram corresponding to FIG. 4 according to Modification 1 of Embodiment 2. It is a perspective view which shows the state which bent the support part of FIG. FIG. 6 is a diagram corresponding to FIG. 4 according to a second modification of the second embodiment. It is a perspective view which shows the state which bent the support part of FIG. It is a perspective view of the liquid storage bag which concerns on the modification of embodiment.

Explanation of symbols

1 Containment bag 3 Bag body 4 Outlet member 5 Side wall (film-like member)
7 Tubular body 10 Outlet 13 Covering portion 14 Fragile portion 15 Upstream member 16 Downstream member 21 Valve seat 25 Valve body 26 Supporting portion (biasing means)
40 First half 41 Second half F Thermal weld base

Claims (9)

A spout member provided by heat welding to a liquid storage bag for storing liquid,
A cylindrical body having a flow path through which liquid flows,
The cylindrical body is configured to be heat weldable to the containing bag,
The tubular body is provided with a valve seat and a valve body that is biased in a direction to be seated on the valve seat and closes the flow passage,
The outlet member according to claim 1, wherein the urging force of the valve body is set so that the valve body is separated from the valve seat when liquid is poured out. A spout member provided by heat welding to a liquid storage bag for storing liquid,
A cylindrical body having a flow path through which liquid flows,
The tubular body is provided with a heat welding base, a valve seat, and a valve body that is biased in the direction of seating on the valve seat to close the flow passage,
The outlet member according to claim 1, wherein the urging force of the valve body is set so that the valve body is separated from the valve seat when liquid is poured out. The spout member according to claim 1 or 2,
The valve seat is provided in the middle of the flow passage in the liquid flow direction, while the valve body is provided downstream of the valve seat in the liquid flow direction,
A spout member characterized in that biasing means for biasing the valve body upstream in the liquid flow direction and seating on the valve seat is provided. The spout member according to claim 3,
The cylindrical body is formed by molding a resin material,
The spout member according to claim 1, wherein the valve body and the urging means are integrally formed with the cylindrical body. The spout member according to claim 4,
The cylindrical body is a combination of an upstream member and a downstream member divided in the liquid flow direction,
The spout member, wherein the valve seat is integrally formed with the upstream member, and the valve body and the biasing means are integrally formed with the downstream member. The spout member according to claim 4,
Two halves divided in half in the radial direction of the cylindrical body are integrally formed of a resin material, and the open side of the two halves is combined to form the cylindrical body,
The spout member, wherein the valve body and the urging means are integrally formed in one half.   A liquid containing bag, wherein the spout member according to any one of claims 1 to 6 is thermally welded to a bag body made of a film-like member. The liquid containing bag according to claim 7,
The bag main body is provided with a cover portion for sealing the cylindrical body. The liquid container bag according to claim 8,
A liquid-containing bag, wherein a fragile portion is provided in the cover portion.

Images