JP2013095439A - Dispensing container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dispensing container capable of preventing a microorganism from entering a content liquid storing part, and having a simple structure and being compact.SOLUTION: The dispensing container 1 includes: a double container 9 consisting of an external layer body 3 and an internal layer body 5, and forming an open air introducing hole 7 for introducing the open air between the external layer body 3 and the internal layer body 5 each other on the mouth part 3a of the external layer body 3; and a plug body 11 assembled on the mouth part 9a of the double container 9 and for dispensing the content liquid in the internal layer body 5. On the plug body 11, a valve member integrally has a dispensing valve part 35 and an air suction valve part 37 and comprising an elastic material is provided. The dispensing valve part is formed of a dispensing hole 31 for dispensing the content liquid stored in the internal layer body 5, and an air suction hole 33 connected with the open air introducing hole 7, the dispensing hole 31 is enclosed and meanwhile, is elastically deformed by the liquid pressure to be opened by pressing. The air suction valve part encloses the air suction hole 33, and meanwhile, it is elastically deformed by the negative pressure in the external layer body 3 with the volume reduction of the internal layer body 5 when the content liquid is dispensed to open the air suction hole 33.

Description

  The present invention relates to a container that discharges the content liquid contained therein, and more particularly, to a discharge container that can prevent the liquid once discharged from flowing back into the container and being contaminated by microorganisms.

  A so-called squeeze bottle-type container is known as a container that stores and discharges eye drops and the like, and discharges a liquid content from a nozzle by squeezing a container body. In such a discharge container, after the container body is squeezed and the content liquid is discharged, the content liquid and the outside air remaining in the nozzle are drawn into the container along with the restoration of the container body, There was a problem that microorganisms and microorganisms adhering to the nozzle were taken together, and the content liquid in the container was easily contaminated by microorganisms. For this reason, usually, preservatives are preliminarily added to eye drops etc. to prevent contamination by microorganisms, but the use of preservatives has drawbacks such as often causing eye irritation and allergic reactions. .

  In this regard, in Patent Document 1, in order to prevent microorganisms from entering the container, a membrane filter that allows liquid to pass while blocking the passage of microorganisms is provided in front of the nozzle, and the container after opening A container that keeps the inside sterile is proposed, but not only a membrane filter but also a member for mounting it is necessary, the number of parts increases, the structure becomes complicated, and the cap itself also increases in size. There is a problem.

JP-T 09-510629

  Therefore, an object of the present invention is to propose a discharge container that can prevent microorganisms from entering the content liquid container and has a simple structure and is compact.

  The present invention has been made to solve the above problems, and a discharge container according to the present invention comprises an outer layer body and an inner layer body laminated inside the outer layer body so as to be peelable from the outer layer body. A double container in which an outside air introduction hole for introducing outside air between the outer layer body and the inner layer body is formed in the section, and a plug body that is assembled to the mouth of the double container and discharges the content liquid in the inner layer body And forming a discharge hole for discharging the liquid contained in the inner layer and an intake hole connected to the outside air introduction hole, and closing the discharge hole. On the other hand, the discharge valve portion that is elastically deformed and pushed open by the hydraulic pressure and the intake hole are blocked, while the elastic deformation is caused by the negative pressure in the outer layer body due to the volume reduction of the inner layer body when the content liquid is discharged. Is it an elastic material that integrally has an intake valve part that opens the intake hole? Those characterized by comprising providing a composed valve member.

  In the discharge container of the present invention, the stopper has a base that is held at the mouth of the double container and holds the valve member, and the base is a ceiling that opens the intake hole. It is preferable to have a wall and a cylindrical body that stands up from the top wall inward in the radial direction of the air intake hole, closes the tip, and opens the discharge hole on the side wall.

  In the discharge container of the present invention, the discharge valve portion has a cylindrical shape that surrounds the cylindrical body and forms a discharge path with the cylindrical body, and the cylindrical discharge valve portion It is preferable that the inner peripheral edge of the upper end is elastically brought into contact with the outer surface of the cylindrical body at a position closer to the tip than the discharge hole.

  Furthermore, in the discharge container according to the present invention, the cylindrical body has a reduced diameter portion whose diameter gradually decreases toward the distal end at the distal end portion, and the upper end of the discharge valve portion extends to the reduced diameter portion. It is preferable to extend.

  In addition, in the discharge container of the present invention, the discharge container includes a cap that covers the stopper and is held by the double container, and the cap has an inner peripheral edge at the upper end of the discharge valve portion inside thereof. It is preferable to have a presser part that presses against the outer surface of the cylindrical body.

  In the discharge container according to the present invention, when the user squeezes (squeezes) the body portion of the outer layer body, the inner layer body contracts, and the liquid pressure of the content liquid in the inner layer body increases. The discharge hole closed by is opened, and the content liquid in the inner layer is discharged through the discharge hole. When the discharge of the content liquid is completed and the squeeze of the outer layer body is released, the outer layer body is restored to its original shape due to its resilience, while the discharge hole is closed by the discharge valve section, so the negative gap between the inner layer body and the outer layer body is Due to the negative pressure, the intake valve portion is elastically deformed to open the intake hole, and outside air flows between the inner layer body and the outer layer body through the intake hole and the outside air introduction hole.

  Therefore, according to the discharge container of the present invention, the discharge valve portion prevents backflow of the content liquid once discharged into the inner layer body, the inner layer body contracts as the content liquid decreases, and the outside air flows into the outer layer body. Since the liquid flows only between the inner layer body and the inner layer body, it is possible to prevent the mixture of microorganisms into the content liquid and the contact between the content liquid and the outside air. In addition, since the discharge valve portion and the intake valve portion are integrally formed, the structure can be simplified and a compact discharge container can be obtained. Moreover, since the discharge valve part closes simultaneously with the end of the compression (end of discharge) of the body part of the outer layer body, it is possible to provide a discharge container with good liquid drainage.

It is the front view which showed the principal part of the discharge container of embodiment according to this invention in the partial cross section. It is a figure which shows the use condition (state which squeezed the trunk | drum of the outer layer body) of the discharge container of FIG. It is a figure which shows the use condition (state which released the squeeze of the trunk | drum of an outer layer body) of the discharge container of FIG. It is the front view which showed the principal part of the discharge container of other embodiment according to this invention in partial cross section. It is the front view which showed the principal part of the discharge container of other embodiment according to this invention in partial cross section. It is the front view which showed the principal part of the discharge container of other embodiment according to this invention in partial cross section.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the discharge container of this invention can be used as other containers such as cosmetic containers as well as various drug containers such as eye drops containers.

  As shown in FIG. 1, the discharge container 1 includes an outer layer body 3 and a thin inner layer body 5 which is laminated inside the outer layer body 3 so as to be peelable from the outer layer body 3, and a mouth portion 3 a of the outer layer body 3. A double container (delami container) 9 formed by forming an outside air introduction hole 7 for introducing outside air between the outer layer body 3 and the inner layer body 5, and a mouth portion 9 a of the double container 9. A plug body 11 for discharging the content liquid in the body 5 is provided.

  The double container 9 includes the mouth portion (the mouth portion of the outer layer body 3 is denoted by reference numeral 3a and the mouth portion of the inner layer body 5 is denoted by reference numeral 5a) 9a and a shoulder portion (outer layer body) connected to the lower end of the mouth portion 9a. 3b is indicated by reference numeral 3b, and the shoulder of the inner layer body 5 is indicated by reference numeral 5b.) 9b, and a cylindrical body connected to the shoulder 9b (the body part of the outer layer body 3 is indicated by reference numeral 3c). The body 5 has a body portion denoted by reference numeral 5c.) 9c and a bottom portion (not shown) for closing the lower end of the body portion 9c. The body portion 3c of the outer layer body 3 has a squeeze-deformable thickness, and the inner layer body 5 is compressed by squeezing the outer layer body 3 (air is interposed between the outer layer body 3 and the inner layer body 5). If present, the inner layer body 5 is compressed by pressurizing the air.) Thus, the content liquid in the inner layer body 5 is discharged through the plug body 11. The inner layer body 5 can be contracted (that is, reduced in volume) as the content liquid decreases. Such a double container 9 is formed by, for example, coextruding an outer layer body 3 made of a high-density polyethylene resin and an inner layer body 5 made of a nylon resin that is incompatible with the high-density polyethylene resin into a laminated shape and blowing it. A laminated preform formed by molding, or by adhering and laminating an outer layer preform and an inner layer preform made of the same synthetic resin with a release layer interposed therebetween can be produced by biaxial stretch blow molding or the like.

  The stopper 11 has a base 13 held by the mouth portion 9 a of the double container 9 and a valve member 15 held by the base 13. The base 13 includes a top wall 17 whose lower surface is in contact with the protruding end of the mouth portion 9a, a mounting tube 19 that is suspended from the outer edge of the top wall 17 and is fitted and held on the outer wall of the mouth portion 3a of the outer layer body 3, and the mounting tube 19, an inner ring 21 that hangs down from the top wall 17 and is fitted into the mouth 5 a of the inner layer body 5. The lower end portion of the mounting cylinder 19 is hermetically contacted and sealed with the enlarged diameter portion 23 at the lower end of the mouth portion 3 a of the outer layer body 3. In this example, the mounting cylinder 19 is held in the mouth 3a of the outer layer body 3 by screw fitting, but may be held in the mouth 3a by an engaging means such as an undercut instead of the screw. (Not shown).

  Further, the top wall 17 of the base 13 is provided with a cylindrical body 25 standing from the top wall 17 at the center and closed at the tip, and an inner annular groove between the cylindrical body 25 and the cylindrical body 25. An inner peripheral wall 27 forming m1 and an outer peripheral wall 29 surrounding the inner peripheral wall 27 and forming an outer annular groove m2 between the inner peripheral wall 27 and the inner peripheral wall 27 are provided. A discharge hole 31 for discharging the content liquid in the inner layer body 5 is formed in the side wall of the cylinder 25 through the inner layer body 5 and a discharge path P described later. In this example, the discharge holes 31 are provided at two opposite positions on the circumference, but the number of the discharge holes 31 may be one or three or more. The cylindrical body 25 has a reduced diameter portion 25a whose diameter gradually decreases toward the distal end at the distal end portion. Here, the reduced diameter portion 25a is hemispherical.

  Further, an intake hole 33 connected to the outside air introduction hole 7 is formed between the inner peripheral wall 27 and the outer peripheral wall 29 of the top wall 17 of the base 13 (the groove bottom of the outer annular groove m2). A recess S is formed in the radially outer portion of the protruding end surface of the mouth portion 9a so as not to block the intake hole 33. As a result, when the inner layer body 5 contracts as the content liquid in the inner layer body 5 decreases, it is formed along the screw between the suction hole 33 and the outer wall of the mouth 3a of the outer layer body 3 and the mounting cylinder 19. Outside air flows between the inner layer body 5 and the outer layer body 3 through the spiral passage and the outside air introduction hole 7.

  The valve member 15 is made of an elastic material such as silicon rubber, and closes the discharge hole 31 (discharge path P) formed in the cylindrical body 25, and is a discharge valve that is elastically deformed and pushed open by hydraulic pressure. The inside of the outer layer body 3 (between the outer layer body 3 and the inner layer body 5) accompanying the volume reduction of the inner layer body 5 when the content liquid is discharged, while closing the suction hole 33 formed in the portion 35 and the top wall 17. An intake valve portion 37 that is elastically deformed by a negative pressure and opens the intake hole 33 is integrally provided.

  More specifically, the discharge valve portion 35 has a cylindrical shape that surrounds the cylindrical body 25 and forms a discharge path P with the cylindrical body 25, and the upper inner peripheral edge of the cylindrical discharge valve portion 35 Is in close elastic contact with the outer surface of the cylinder 25 at a position closer to the tip than the discharge hole 31. The base (lower part) of the discharge valve part 35 is inserted and held in the inner annular groove m1 between the cylindrical body 25 and the inner peripheral wall 27. When the inner layer body 5 is compressed by deforming the outer layer body 3 by squeeze deformation and the liquid pressure of the content liquid increases, the discharge valve section 35 has its upper part (upper part than the transition part 39 described later) by the liquid pressure of the content liquid. While being elastically deformed and pushed open to allow the discharge of the content liquid, when the squeeze of the outer layer body 3 is released and the compression of the inner layer body 5 is released, the original shape is restored and the outer surface of the cylindrical body 25 is again tightly sealed The backflow of the discharged content liquid and the entry of outside air are prevented. Thus, the discharge valve part 35 functions as a check valve.

  The intake valve portion 37 has a conical taper shape extending while being inclined downward from a transition portion 39 connected to the outer peripheral wall 29 of the discharge valve portion 35, and the outer peripheral edge of the lower end thereof is the outer peripheral wall of the base 13. It is elastically abutting on the inner surface of 29. The intake valve section 37 prevents the compressed air in the inner layer body 5 and the outer layer body 3 from leaking outside through the intake holes 33 when the outer layer body 3 is squeezed to discharge the content liquid. On the other hand, when a negative pressure is generated between the outer layer body 3 and the inner layer body 5 due to the release of the squeeze of the outer layer body 3, the suction hole 33 is opened by elastic deformation based on the connection position with the transition portion 39 by the negative pressure. Allow the introduction of outside air. Thus, the intake valve portion 37 functions as a check valve.

  Further, in this embodiment, the discharge container 1 includes a cap 41 that covers and conceals the stopper 11 and is fitted and held in the double container 9 (here, the shoulder 3b of the outer layer body 3). 41 is a cylindrical body wall 43 with a lid that covers the plug body 11, and the inner wall 27 is hung inside the body wall 43 in correspondence with the inner peripheral wall 27 of the base 13. And an annular wall 45 that sandwiches the transition portion 39 of the valve member 15. The annular wall 45 has a sealing function by pressing the inner peripheral edge of the upper end of the discharge valve portion 35 against the outer surface of the cylindrical body 25. A plurality of ribs 47 as presser portions to be raised are provided at intervals in the circumferential direction.

  In the discharge container 1 having such a configuration, when the cap 41 is removed and the user squeezes the body 3c of the outer layer body 3, the inner layer body 5 contracts as shown in FIG. (When air is present between the outer layer body 3 and the inner layer body 5, the intake hole 33 is closed by the intake valve portion 37, so the air between the outer layer body 3 and the inner layer body 5 is pressurized and the inner layer is The body 5 contracts.), The liquid pressure of the content liquid in the inner layer body 5 increases, the discharge hole 31 closed by the discharge valve portion 35 is opened by this liquid pressure, and the content liquid in the inner layer body 5 is discharged. It discharges through the hole 31 and the discharge path P. When the discharge of the content liquid is completed and the squeeze of the outer layer body 3 is released as shown in FIG. 3, the outer layer body 3 returns to its original shape due to its restoring property, while the discharge hole 31 is blocked by the discharge valve portion 35. Therefore, a negative pressure is generated between the inner layer body 5 and the outer layer body 3, the intake valve portion 37 is elastically deformed by the negative pressure and the intake hole 33 is opened, and the outside air flows into the intake hole 33 and the mouth 3 a of the outer layer body 3. It flows between the inner layer body 5 and the outer layer body 3 through the spiral passage formed between the outer wall and the mounting cylinder 19 and the outside air introduction hole 7.

  Therefore, according to the discharge container 1, the discharge valve portion 35 prevents the backflow of the content liquid once discharged into the inner layer body 5, and the inner layer body 5 contracts as the content liquid decreases, so that the outside air Since it flows only between the outer layer body 3 and the inner layer body 5, it is possible to prevent the mixture of microorganisms into the content liquid and the contact between the content liquid and the outside air. Further, since the discharge valve portion 35 and the intake valve portion 37 are integrally formed, the structure can be simplified and the discharge container 1 can be made compact.

  Moreover, according to the discharge container 1 of this embodiment, since the cylindrical body 25 is erected on the top wall 17 of the base 13 and the discharge hole 31 is opened on the side wall of the cylindrical body 25, the discharge container is used. 1 can be further downsized.

  Furthermore, according to the discharge container 1 of this embodiment, the configuration in which the inner peripheral edge at the upper end of the discharge valve portion 35 is elastically brought into contact with the outer surface of the cylindrical body 25 at a position closer to the tip than the discharge hole 31 is adopted. Therefore, the discharge valve portion 35 is easily elastically deformed, and smooth discharge and good liquid breakage can be realized, and the area covered with the discharge valve portion 35 can be increased. The exposed area to the outside of the body 25 can be reduced, and the adhesion and propagation area of microorganisms can be reduced.

  Moreover, according to the discharge container 1 of this embodiment, the cap 41 is provided with the rib 47 as a pressing portion that presses the inner peripheral edge of the upper end of the discharge valve portion 35 against the outer surface of the cylindrical body. The leakage of the content liquid from the discharge valve part 35 can be prevented.

  Next, another embodiment of the present invention will be described with reference to FIG. In addition, in the discharge container 1 of embodiment shown in FIG. 4, the same code | symbol is attached | subjected to the member similar to the discharge container 1 demonstrated with reference to FIG. 1, and the detailed description is abbreviate | omitted.

  The discharge container 1 is different from the discharge container 1 of FIG. That is, in this discharge container 1, although the cylindrical body 25 is provided with a reduced diameter portion 25a at the tip, the shape thereof is a substantially truncated cone comprising a linearly tapered side wall surface 49a and a flat tip surface 49b. Shape.

  According to this embodiment, since the side wall surface 49a of the reduced diameter portion 25a is linearly tapered, in addition to the effect of the discharge container 1 of FIG. Since the moving speed of the discharge container 1 can be increased, the liquid discharge property of the discharge container 1 can be improved.

  Next, still another embodiment of the present invention will be described with reference to FIG. In addition, in the discharge container 1 of embodiment shown in FIG. 5, the same code | symbol is attached | subjected to the member similar to the discharge container 1 demonstrated with reference to FIG. 1, and the detailed description is abbreviate | omitted.

  In the embodiment shown in FIG. 1, the outer wall 29 is provided on the top wall 17, and the lower end outer peripheral edge of the intake valve portion 37 is brought into contact with the inner wall surface of the outer wall 29. In the embodiment shown, instead of the outer peripheral wall 29, the mounting cylinder 19 is extended to above the top wall 17, and the intake valve portion 37 and the transition portion 39 are covered by the upper portion thereof. In this case, the outer peripheral edge at the lower end of the intake valve portion 37 is elastically contacted with the inner peripheral surface of the mounting cylinder 19 in an airtight manner.

  According to this embodiment, since the configuration that covers the intake valve portion 37 with the mounting cylinder 19 is adopted, in addition to the effect of the discharge container 1 of FIG. In addition, it is possible to prevent the intrusion of the content liquid or the like and does not hinder the valve function.

  Next, still another embodiment of the present invention will be described with reference to FIG. In addition, in the discharge container 1 of embodiment shown in FIG. 6, the same code | symbol is attached | subjected to the member similar to the discharge container 1 demonstrated with reference to FIG. 1, and the detailed description is abbreviate | omitted.

  In this embodiment, the configuration of the valve member 15 is different from that of the discharge container 1 shown in FIG. That is, the upper end of the discharge valve portion 35 extends to the reduced diameter portion 25a of the cylindrical body 25, and the reduced diameter portion 25a of the cylindrical body 25 is only partially exposed to the outside. Most of 25 is covered by the valve member 15. Further, the valve member 15 is formed in a cylindrical shape whose overall shape is widened toward the end, and a transition portion 39 between the discharge valve portion 35 and the intake valve portion 37 is formed below the discharge hole 31 of the cylindrical body 25. It is held by the intermediate portion 25b having a larger diameter than the tip portion. Further, a convex portion 51 protruding outward in the radial direction is provided on the outer surface (near the transition portion 39) of the intake valve portion 37 of the valve member 15. Here, although the convex part 51 takes an annular form, a plurality of points may be scattered on the outer surface of the intake valve part 37 (not shown), and the number of convex parts in that case is not limited.

  In this embodiment, instead of the inner peripheral wall 27 and the outer peripheral wall 29 of the discharge container 1 shown in FIG. 1, the base 13 is erected so as to surround the base of the cylindrical body 25 from the outer edge of the top wall 17, A peripheral wall 53 that forms an annular groove m3 is provided between the base portion and the lower outer peripheral edge of the intake valve portion 37 tightly and elastically abuts the inner peripheral surface of the peripheral wall 53 to close the intake hole 33. Yes. Further, the mounting cylinder 19 extends to above the top wall 17 so as to cover the intake valve portion 37 and the transition portion 39, and the upper inner surface of the mounting cylinder 19 comes into contact with the upper surface of the convex portion 51 and comes out of the valve member 15. An abutment surface f for holding and holding is formed. The abutment surface f is provided with notches 55 at a plurality of locations on the circumference in order to ensure a flow path for the outside air.

  Furthermore, in this embodiment, a groove-shaped passage g extending from the upper part to the position of the outside air introduction hole 7 or a position slightly below the outside air introduction hole 7 is formed on the outer wall of the mouth 3a of the outer layer body 3. The outside air that flows in through the intake hole 33 is guided to the outside air introduction hole 7 through the passage g.

  In this embodiment, the presser portion that presses the inner peripheral edge of the upper end of the discharge valve portion 35 against the outer surface of the cylindrical body 25 is configured by bringing the annular wall 45 of the cap 41 into contact with the upper end of the discharge valve portion 35. Yes.

  According to this embodiment, since the upper end of the discharge valve portion 35 is extended to the reduced diameter portion 25a, in addition to the effect of the discharge container 1 of the embodiment of FIG. In addition, the adhesion and propagation area of microorganisms can be further reduced. Since the valve member 15 made of an elastic material covers the distal end portion of the cylindrical body 25, the cylindrical body 25 may damage the eyeball even when the distal end of the cylindrical body 25 touches the eyeball during use. There is no. Furthermore, since the convex part 51 was provided in the outer peripheral surface of the valve member 15, and the structure which presses this convex part 51 with the mounting cylinder 19 was employ | adopted, drop-off | omission of the valve member 15 can be prevented. Further, since a passage g communicating the intake hole 33 and the outside air introduction hole 7 is provided in the outer wall of the mouth portion 3a of the outer layer body 3, resistance when introducing outside air between the outer layer body 3 and the inner layer body 5 is provided. In other words, the negative pressure applied to the inner layer body 5 when the outer layer body 3 is restored to its original shape can be relaxed, and the intrusion of outside air from the discharge valve portion 35 can be prevented more reliably. it can.

  Thus, according to the present invention, it is possible to prevent microorganisms from entering the content liquid container, and to propose a compact discharge container with a simple structure.

DESCRIPTION OF SYMBOLS 1 Discharge container 3 Outer layer body 5 Inner layer body 7 Outside air introduction hole 9 Double container 11 Plug body 13 Base 15 Valve member 17 Top wall 25 Cylindrical body 25a Reduced diameter part 31 Discharge hole 33 Intake hole 35 Discharge valve part 37 Intake valve part 41 Cap 47 Rib (Presser foot)

Claims (5)

An outer layer body and an inner layer body laminated inside the outer layer body so as to be peelable from the outer layer body are formed, and an outside air introduction hole for introducing outside air between the outer layer body and the inner layer body is formed at the mouth of the outer layer body. A discharge container equipped with a double container and a stopper that is assembled to the mouth of the double container and discharges the content liquid in the inner layer,
The plug body is formed with a discharge hole for discharging the content liquid contained in the inner layer body and an intake hole connected to the outside air introduction hole, and closes the discharge hole while elastically deforming due to the hydraulic pressure. A discharge valve portion that is pushed open, and an intake valve portion that closes the intake hole and elastically deforms due to negative pressure in the outer layer body due to volume reduction of the inner layer body when the content liquid is discharged and opens the intake hole And a valve member made of an elastic material.   The stopper has a base that is held at the mouth portion of the double container and holds the valve member. The base has a ceiling wall that opens the intake hole, and a radially inner side of the intake hole. The discharge container according to claim 1, further comprising a cylindrical body that stands up from the top wall and has a tip closed and a side wall opening the discharge hole.   The discharge valve portion has a cylindrical shape that surrounds the cylindrical body and forms a discharge path with the cylindrical body, and an inner peripheral edge at an upper end of the cylindrical discharge valve portion is an outer surface of the cylindrical body The discharge container according to claim 2, wherein the discharge container is elastically contacted at a position closer to the tip side than the discharge hole.   The said cylindrical body has a diameter-reduction part which a diameter reduces gradually toward the front-end | tip part, The upper end of the said discharge valve part is extended to the said diameter-reduction part, The Claim 3 of Claim 3 Discharge container. The discharge container includes a cap that covers the stopper and is held by a double container,
5. The discharge container according to claim 3, wherein the cap has a pressing portion that presses an inner peripheral edge of an upper end of the discharge valve portion against an outer surface of the cylindrical body.

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