JP2011246182A - Dispensing vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assure sealability stably and prevent deterioration of a content by making a dispensing valve certainly clog a communication passage even when the dispensing valve is operated repeatedly.SOLUTION: The outer vessel 3 of the vessel body 4 is formed wirth a suction hole 7c through which the outer air enters, is formed between the outer container and the inner vessel 2. The dispensing cap 24 includes an air valve 12 switching between the communication of the suction hole 7c with the outside and shield of the same from outside, a communication passage 25 making a dispensing opening 13 communicate with the inside of the inner vessel 2, the dispensing valve 15 openably closing the communication passage 25 from the dispensing opening 13 side, and a resilient connection piece 16 connected to the dispensing valve 15 and resiliently deformed by the variation of the inner pressure of the inner vessel 2 to operate the dispensing valve 15 and make the same open and close the communication passage 25. An over-cap 6 includes a depression part 21 depressing the dispensing valve 15 to the inner side of the vessel 2.

Description

  The present invention relates to a discharge container.

Conventionally, as this type of discharge container, for example, as shown in Patent Document 1 below, a flexible inner container that accommodates contents and squeezes and deforms as the internal pressure decreases, and an inner container are internally provided. A container body having an outer container that can be elastically deformed, a discharge cap that is attached to a mouth portion of the container body and has a discharge port for discharging contents, and an overcap that is detachably disposed on the discharge cap A configuration including the above is known.
The outer container is formed with an intake hole through which the outside air is sucked between the inner container, the discharge cap is provided with an air valve for switching communication between the intake hole and the outside, and between the outlet and the inner container. A communication passage that communicates with the interior, a discharge valve that opens and closes the communication passage from the discharge port side, and a discharge valve that is elastically deformed by the internal pressure fluctuation of the inner container and operates the discharge valve to open and close the communication passage And an elastic connecting piece.

  In this discharge container, when the contents contained in the inner container of the container body are discharged, the outer container of the container body is squeezed (elastically deformed). Thereby, the inner container is deformed together with the outer container to reduce the volume. As the volume is reduced, the inner pressure of the inner container becomes positive. The positive pressure causes the elastic connecting piece to be elastically deformed, and the discharge valve is opened from the inner container toward the discharge port, thereby opening the communication path. Is done. Thereby, the contents accommodated in the inner container are discharged from the discharge port through the communication path.

Thereafter, when the internal pressure of the inner container decreases, the elastic connecting piece is restored and deformed by elastic restoring force, the discharge valve is closed, the communication path is closed and the inner container is sealed, and when the squeeze deformation described above is released, The container tries to be restored and deformed. At this time, when the negative pressure generated between the outer container and the inner container acts on the air valve through the intake hole, the air valve is activated to connect the intake hole and the outside, and the outside air is discharged from the intake hole. Inhaled between the outer container and the inner container.
When the internal pressure between the outer container and the inner container rises to the atmospheric pressure due to the intake of the outside air, the air valve is restored and deformed to shut off the intake hole and the outside. Thus, the volume reduction shape of the inner container is maintained by sucking the outside air between the outer container and the inner container.

From this state, when the outer container of the container body is squeezed again, the air valve is shut off, so the internal pressure between the outer container and the inner container becomes positive, and this positive pressure reduces the inner container. To be deformed. By reducing the volume of the inner container, the same action as described above is obtained, and the contents are discharged.
As described above, even when the squeezed deformed outer container is restored and deformed, the inner container is reduced in volume as the contents are reduced, and the outside air is prevented from flowing into the inner container. Thereby, deterioration of the content is prevented and the preservability is improved.

JP 2004-59131 A

  However, in the conventional discharge container, while the discharge of the contents is repeated, the elastic connecting piece that operates the discharge valve is deteriorated and gradually becomes difficult to be restored and deformed, and the discharge valve may not be able to block the communication path. It was.

  The present invention has been made in view of such circumstances, and even when the discharge valve is repeatedly operated, the discharge valve reliably closes the communication path, and can stably secure the sealing performance. It aims at providing the discharge container which can prevent deterioration of the contents.

In order to solve the above problems, the present invention proposes the following means.
A discharge container according to the present invention is a container main body comprising a flexible inner container that accommodates contents and squeezes and deforms with a decrease in internal pressure, and an outer container that is internally deformed and elastically deformable. A discharge cap that is attached to a mouth portion of the container body and has a discharge port for discharging the contents; and an overcap that is detachably disposed on the discharge cap; Is formed with an air intake hole through which the outside air is sucked between the inner container, and the discharge cap includes an air valve for switching communication and blocking between the air intake hole and the outside, and the discharge port and the inner container. A communication path that communicates with the interior, a discharge valve that closes the communication path from the discharge port side so as to be openable and closable, and a discharge valve that is connected to the discharge valve and is elastically deformed by fluctuations in the internal pressure of the inner container to operate the discharge valve Let the communication path open and close And elastic connecting piece that, are provided, wherein the overcap is characterized by comprising a pressing portion for pressing the discharge valve toward the inner side of the inner container.

  In the discharge container according to the present invention, when the contents stored in the inner container of the container body are discharged, the outer container of the container body is squeezed (elastically deformed). Thereby, the inner container is deformed together with the outer container to reduce the volume. Then, the internal pressure of the inner container becomes positive with this volume reduction deformation, the elastic connecting piece is elastically deformed by this positive pressure, the discharge valve is separated from the communication path toward the discharge port side, and the communication path is opened. The Thereby, the contents accommodated in the inner container are discharged from the discharge port through the communication path.

Thereafter, when the internal pressure of the inner container decreases, the elastic connecting piece is restored and deformed by elastic restoring force, the discharge valve is closed, the communication path is closed and the inner container is sealed, and when the squeeze deformation described above is released, The container tries to be restored and deformed. At this time, when the negative pressure generated between the outer container and the inner container acts on the air valve through the intake hole, the air valve is activated to connect the intake hole and the outside, and the outside air is discharged from the intake hole. Inhaled between the outer container and the inner container.
When the internal pressure between the outer container and the inner container rises to the atmospheric pressure due to the intake of the outside air, the air valve is restored and deformed to shut off the intake hole and the outside. Thus, the volume reduction shape of the inner container is maintained by sucking the outside air between the outer container and the inner container.

From this state, when the outer container of the container body is squeezed again, the air valve is shut off, so the internal pressure between the outer container and the inner container becomes positive, and this positive pressure reduces the inner container. To be deformed. By reducing the volume of the inner container, the same action as described above is obtained, and the contents are discharged.
After discharging, an overcap is attached to the discharging cap.

  Conventionally, while the discharge is repeated in this manner, the elastic connecting piece that operates the discharge valve may not be easily restored and deformed. However, in the present invention, the overcap is provided with a pressing portion, and the pressing portion is discharged. Since the valve is pushed toward the inner side of the inner container, the discharge valve is reliably restored and displaced, and the communication path can be closed.

  That is, when the overcap is mounted on the discharge cap after the contents are discharged, the pressing portion of the overcap pushes down the discharge valve to securely close the communication path, thereby ensuring sealing performance. Thereby, deterioration of the contents accommodated in the inner container is surely prevented.

  Further, in the discharge container according to the present invention, the discharge valve includes an opening / closing portion that contacts and separates from an opening peripheral edge portion of the communication path, and a protruding portion that protrudes from the opening / closing portion toward the discharge port side. The pressing portion may be in contact with the protrusion from the discharge port side.

  In this case, the position where the pressing part of the overcap and the protruding part of the discharge valve contact each other is separated upward (overcap side) from the opening / closing part of the discharge valve. Thereby, the following effect is acquired.

That is, the contents are likely to remain and adhere to the opening / closing portion of the discharge valve after discharge, and the contents may be dried and fixed. When the pressing portion comes into contact with such an opening / closing portion, the discharge valve and the pressing portion may adhere to each other due to the above-described fixation of the contents. If the overcap is removed from the discharge cap in this state, the pressing portion of the overcap pulls up the discharge valve, and the elastic connecting piece connected to the discharge valve may be broken (damaged).
On the other hand, according to the present invention, the position where the protruding portion of the discharge valve and the pressing portion of the overcap abut each other is spaced above the opening / closing portion. Are prevented from adhering to each other, and the elastic connecting piece is prevented from being broken.

  According to the discharge container of the present invention, even if the discharge valve is repeatedly operated, the discharge valve reliably closes the communication path, can stably secure the sealing performance, and can prevent deterioration of the contents.

It is a sectional side view which shows the principal part of the discharge container which concerns on one Embodiment of this invention. It is a figure explaining the state which discharges the content from the discharge outlet of the discharge container of FIG. It is a figure explaining the state after discharge of the contents in the discharge container of FIG.

Hereinafter, a discharge container according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the discharge container 1 is housed in a flexible inner container 2 that is squeezed and deformed as the internal pressure is reduced, and the inner container 2 is housed and elastically deformable. A container main body 4 having an outer container 3, a discharge cap 24 that is attached to the mouth portion 4 a of the container main body 4 and has a discharge port 13 for discharging the contents, and an over cap that is detachably disposed on the discharge cap 24. And a cap 6.

Here, the container body 4 is formed in a bottomed cylindrical shape, the overcap 6 is formed in a topped cylindrical shape, and these 4 and 6 are arranged coaxially with the common shaft.
Hereinafter, this common axis is referred to as the container axis O, the overcap 6 side along the container axis O direction is referred to as the upper side, the bottom side of the container body 4 is referred to as the lower side, and the direction orthogonal to the container axis O is referred to as the radial direction. The direction that goes around the container axis O is called the circumferential direction.

In the illustrated example, the container body 4 is a so-called Delami bottle in which the inner container 2 is detachably laminated on the inner surface of the outer container 3.
The mouth part 4a of the container body 4 is formed in a two-stage cylinder shape including an upper cylinder part 7 positioned on the upper side and a lower cylinder part 8 positioned on the lower side and formed with a larger diameter than the upper cylinder part 7. Has been.

  A fitting convex portion 7 b is formed on the outer peripheral surface of a portion (hereinafter referred to as an outer upper cylindrical portion) 7 a formed of the outer container 3 in the upper cylindrical portion 7. In addition, an intake hole 7c through which outside air is drawn is formed between the outer upper cylinder portion 7a and the inner container 2 at a portion located below the fitting convex portion 7b. A groove 7e extending in the vertical direction is formed in a portion of the fitting convex portion 7b located above the intake hole 7c.

The inner peripheral surface of the outer upper cylindrical portion 7a is a smooth cylindrical surface, and a portion (hereinafter referred to as an inner upper cylindrical portion) 7d formed of the inner container 2 in the upper cylindrical portion 7 is laminated on the inner peripheral surface. Has been. Further, the upper end portion of the inner upper cylindrical portion 7d is folded back to the outer side in the radial direction and disposed on the upper end opening edge of the outer upper cylindrical portion 7a.
The container body 4 is formed, for example, by blow molding a co-extruded two-layer parison, the outer container 3 is made of polyethylene resin, and the inner container 2 is not compatible with the polyethylene resin. It is made of polyamide synthetic resin.

The discharge cap 24 includes an inner cylinder body 9, an outer cylinder body 5, and a valve cylinder body 17.
The inner cylinder body 9 is formed in a top cylinder shape having a top wall portion 9a and a peripheral wall portion 9b, and a communication tube 10 is erected upward from the top wall portion 9a.

The peripheral wall portion 9 b of the inner cylindrical body 9 is fitted in the mouth portion 4 a of the container body 4. In addition, an annular flange 9c that protrudes radially outward and extends along the circumferential direction is formed at the center in the vertical direction of the circumferential wall 9b. The flange portion 9c is in contact with the upper end opening edge of the mouth portion 4a from above.
Further, a fitting tube portion 9d protrudes upward from the outer edge portion of the flange portion 9c. A plurality of outside air circulation holes 9e penetrating in the radial direction and opening downward are formed in the lower end portion of the fitting cylinder portion 9d at intervals in the circumferential direction.

  The inside of the communication cylinder 10 is a communication passage 25 whose upper end can communicate with a discharge cylinder 11 described later and whose lower end communicates with the mouth 4 a of the container body 4. An annular discharge valve receiving portion 10 a that protrudes radially inward and extends along the circumferential direction is provided at the upper end of the communication tube 10.

The outer cylinder 5 is formed in a top cylinder shape including a top wall 5a and a peripheral wall 5b, and a discharge cylinder 11 is provided through the top wall 5a. The upper end opening of the discharge cylinder 11 is the discharge port 13.
On the inner peripheral surface of the peripheral wall portion 5b of the outer cylindrical body 5, a fitting convex portion 5c that is undercut fitted to the fitting convex portion 7b of the mouth portion 4a of the container body 4 is formed. Moreover, the lower cylinder part 8 of the opening part 4a is fitted in the airtight state in the lower end part of the surrounding wall part 5b. This prevents the intake hole 7 c from communicating with the outside of the discharge container 1 from the lower side of the peripheral wall portion 5 b of the outer cylinder 5.

  Further, the outer cylinder 5 is connected to the discharge valve 15 that closes the communication passage 25 from the upper side (discharge port 13 side) so as to be openable and closable, and is elastically deformed by the fluctuation of the internal pressure of the inner container 2 to be discharged. And an elastic connecting piece 16 that operates 15 to open and close the communication path 25.

  An annular air valve receiving cylinder 18 that protrudes downward and extends along the circumferential direction is formed on the top wall 5 a of the outer cylinder 5. In addition, an outside air inflow hole 5d is formed in a portion of the top wall portion 5a located between the air valve receiving cylinder 18 and a fitting cylinder 26 described later located radially outward from the air valve receiving cylinder 18. Has been.

  Further, in the discharge cylinder 11, the inner diameter of the lower portion 11a located below the top wall portion 5a is larger than the inner diameter of the upper portion 11b located above, and the inner circumference of the lower portion 11a. A step portion 11c is formed between the surface and the inner peripheral surface of the upper portion 11b. The lower portion 11 a of the discharge cylinder 11 is fitted on the communication cylinder 10, and the step portion 11 c is in contact with the upper edge of the communication cylinder 10 from above.

A part of the upper end opening edge of the discharge cylinder 11 protrudes upward from other portions, and is a lip portion 11d that gradually inclines radially outward as it goes upward.
In addition, the lower end portion of the upper portion 11b of the discharge cylinder 11 protrudes inward in the radial direction and has a disk shape via a plurality of elastic connecting pieces 16 formed at intervals in the circumferential direction. The discharge valve 15 is connected. A gap is formed in the circumferential direction between the adjacent elastic connecting pieces 16, and the contents circulate in the gap.

The outer edge portion of the discharge valve 15 is in contact with the inner edge portion of the discharge valve receiving portion 10a of the communication tube 10 from above, and the communication passage 25 is thereby closed. Further, the elastic connecting piece 16 is elastically deformed so that the discharge valve 15 can be displaced upward (on the discharge port 13 side) and the communication passage 25 is opened.
The discharge valve 15 includes a disk-shaped opening / closing portion 14 that contacts and separates from the opening peripheral edge portion of the communication passage 25 (the inner edge portion of the discharge valve receiving portion 10a), and a circle protruding upward from the opening / closing portion 14. And a columnar protrusion 19. In the illustrated example, the protrusion 19 has a smaller diameter than the opening / closing part 14.

The valve cylinder 17 is fitted in the upper end portion of the peripheral wall portion 5b of the outer cylinder body 5, and is protruded radially inward from the lower end portion of the fitting cylinder 26 and circumferentially. And an air valve 12 that is elastically deformable and switches communication between the intake hole 7c and the outside. An annular protrusion 12 a that protrudes upward and extends in the circumferential direction is formed on the inner edge of the air valve 12. Further, the fitting tube portion 9d is fitted to the lower side of the valve tube body 17 in the upper end portion of the peripheral wall portion 5b.
The protrusion 12a of the air valve 12 is in contact with the air valve receiving cylinder 18 from below, and can be separated downward by elastic deformation of the air valve 12.

  The overcap 6 is formed in a top tube shape including a top wall portion 6a and a peripheral wall portion 6b, and a plug tube 20 projects downward from the top wall portion 6a. The lower end portion of the plug cylinder 20 is fitted in the upper end portion of the discharge cylinder 11, thereby closing the discharge port 13.

  Further, the overcap 6 includes a pressing portion 21 that presses the discharge valve 15 downward (inside the inner container 2). The pressing portion 21 protrudes downward from the top wall portion 6 a of the overcap 6 and is disposed radially inward of the plug barrel 20. In the example shown in the drawing, the pressing portion 21 is formed in a columnar shape having a cross-sectional shape along the radial direction and extending along the vertical direction. The pressing part 21 is in contact with the protrusion 19 of the discharge valve 15 from above.

  In addition, a hinge 22 that connects the lower end of the peripheral wall 6b of the overcap 6 and the upper end of the peripheral wall 5b of the discharge cap 24 is provided. The hinge 22 is disposed on the opposite side of the lip portion 11d that sandwiches the container shaft O in the radial direction. At the lower end of the peripheral wall portion 6b of the overcap 6, an opening / closing operation piece 23 projects outwardly in the radial direction on the opposite side of the hinge 22 that sandwiches the container shaft O in the radial direction.

According to the discharge container 1 which concerns on this embodiment demonstrated above, there exists the following effect.
In the discharge container 1, when the contents stored in the inner container 2 of the container body 4 are discharged, the opening / closing operation piece 23 is operated to open the overcap 6, and the discharge port 13 is positioned downward as shown in FIG. 2. The outer container 3 of the container body 4 is squeezed (elastically deformed) in a state where the discharge posture is suitable for the container. Thereby, the inner container 2 is deformed together with the outer container 3 to reduce the volume. Then, the internal pressure of the inner container 2 becomes a positive pressure along with the volume reduction deformation, the elastic connecting piece 16 is elastically deformed by the positive pressure, and the discharge valve 15 is separated upward from the communication path 25, so that the communication path 25. Is released. Thereby, the contents accommodated in the inner container 2 are discharged from the discharge port 13 through the communication path 25.

Thereafter, when the internal pressure of the inner container 2 decreases, the elastic connecting piece 16 is restored and deformed by elastic restoring force, the discharge valve 15 is closed, the communication passage 25 is closed, the inner container 2 is sealed, and the squeeze deformation described above is further performed. When is released, the outer container 3 tries to be restored and deformed. At this time, the negative pressure generated between the outer container 3 and the inner container 2 acts on the air valve 12 through the intake hole 7c, so that the air valve 12 opens toward the intake hole 7c and the intake hole 7c and The outside communicates, and outside air is sucked between the outer container 3 and the inner container 2 from the intake hole 7c through the outside air inflow hole 5d, the outside air circulation hole 9e, and the groove 7e.
When the internal pressure between the outer container 3 and the inner container 2 rises to the atmospheric pressure due to the intake of the outside air, the air valve 12 is restored and deformed to shut off the intake hole 7c and the outside. Thus, the volume reduction shape of the inner container 2 is maintained by sucking the outside air between the outer container 3 and the inner container 2.

From this state, when the outer container 3 of the container body 4 is squeezed again, the air valve 12 is shut off, so that the internal pressure between the outer container 3 and the inner container 2 becomes a positive pressure. As a result, the volume of the inner container 2 is reduced. By reducing the volume of the inner container 2, the same action as described above is obtained, and the contents are discharged.
After the discharge, as shown in FIG. 3, the opening / closing operation piece 23 is operated to close the overcap 6 and the discharge cap 24 is attached.

  Conventionally, the elastic connecting piece that operates the discharge valve may be difficult to be restored and deformed while the discharge is repeated as described above. However, in the present invention, the pressing portion 21 is provided in the overcap 6, and the pressing portion 21 depresses the discharge valve 15 downward, so that the discharge valve 15 is reliably restored and displaced, and the communication passage 25 can be closed.

  That is, when the overcap 6 is attached to the discharge cap 24 after the contents are discharged, the pressing portion 21 of the overcap 6 pushes down the discharge valve 15 to securely close the communication passage 25, so that the sealing performance is ensured. The Thereby, deterioration of the content accommodated in the inner container 2 is prevented reliably.

  Further, the discharge valve 15 is formed with a protruding portion 19 that protrudes upward. As shown in FIG. 3, when the overcap 6 is closed, the pressing portion 21 comes into contact with the protruding portion 19 from above. Has been. Therefore, the position where the pressing portion 21 of the overcap 6 and the protrusion 19 of the discharge valve 15 abut each other is spaced above the opening / closing portion 14 of the discharge valve 15. Thereby, the following effect is acquired.

That is, the content tends to remain and adhere to the opening / closing portion 14 of the discharge valve 15 after the discharge, and the content may be dried and fixed. For example, when the pressing part 21 comes into contact with such an opening / closing part 14, the discharge valve 15 and the pressing part 21 may be bonded to each other due to the above-described fixation of the contents. If the overcap 6 is removed from the discharge cap 24 in this state, the pressing portion 21 of the overcap 6 pulls up the discharge valve 15 and the elastic connecting piece 16 connected to the discharge valve 15 is broken (damaged). ).
On the other hand, according to the present embodiment, the position where the protruding portion 19 of the discharge valve 15 and the pressing portion 21 of the overcap 6 abut against each other is spaced above the opening / closing portion 14, so The protruding portion 19 and the pressing portion 21 are prevented from being bonded to each other, and the elastic connecting piece 16 is prevented from being broken.

  Further, in FIG. 3, the discharge port 13 is closed by fitting the plug tube 20 of the overcap 6 into the discharge tube 11. Thereby, even if the contents remain around the opening / closing part 14, the contents are prevented from drying, and the deterioration of the elastic connecting piece 16 is suppressed. Moreover, the sealing performance inside the inner container 2 is further improved.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the plurality of elastic connection pieces 16 are provided on the inner peripheral surface of the discharge cylinder 11 at intervals in the circumferential direction. However, the number of the elastic connection pieces 16 is limited. It is not a thing. That is, the number of elastic connecting pieces 16 may be single, two, or three or more.

  Moreover, although the container main body 4 in the above-described embodiment is a so-called Delami bottle in which the inner container 2 is releasably laminated on the inner surface of the outer container 3, it is not limited to this. For example, the inner container 2 And the outer container 3 may be a double container formed separately.

  Moreover, although the fitting convex part 5c of the outer cylinder 5 of the discharge cap 24 decided to undercut fitting to the fitting convex part 7b of the opening | mouth part 4a of the container main body 4, it is not limited to this. . That is, instead of using these fitting projections 5c and 7b, for example, by forming an internal thread portion in the outer cylinder 5 and an external thread portion in the mouth portion 4a and screwing them together, the discharge cap 24 is fitted into the mouth portion 4a. It is good also as attaching.

  Further, the above-described overcap 6 is a hinge-type cap that rotates about the hinge 22 and is detachably disposed on the discharge cap 24. However, the present invention is not limited to this. For example, the overcap 6 May be a screw-type cap that is detachably attached to the discharge cap 24 by screwing, or a stopper-type cap that is detachably provided to the discharge cap 24 by a pushing operation.

  In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 Discharge container 2 Inner container 3 Outer container 4 Container main body 4a Mouth part 6 Overcap 7c Intake hole 12 Air valve 13 Discharge port 14 Opening / closing part 15 Discharge valve 16 Elastic connecting piece 19 Protrusion part 21 Depressing part 24 Discharge cap 25 Communication path

Claims (2)

A flexible inner container that accommodates contents and squeezes and deforms as internal pressure decreases, and a container body that includes the inner container and an outer container that is elastically deformable;
A discharge cap attached to the mouth of the container body and having a discharge port for discharging the contents;
An overcap detachably disposed on the discharge cap,
The outer container is formed with an intake hole through which the outside air is sucked between the inner container,
The discharge cap includes
An air valve for switching communication and blocking between the intake hole and the outside;
A communication passage communicating the discharge port and the inside of the inner container;
A discharge valve for closing and opening the communication path from the discharge port side;
An elastic connecting piece connected to the discharge valve, elastically deforming due to fluctuations in the internal pressure of the inner container and operating the discharge valve to open and close the communication path;
The discharge container according to claim 1, wherein the overcap includes a pressing portion that presses the discharge valve toward the inside of the inner container. The discharge container according to claim 1,
The discharge valve is
An opening / closing part that contacts and separates from the opening peripheral edge of the communication path;
A protrusion that protrudes from the opening / closing portion toward the discharge port,
The discharge container, wherein the pressing portion abuts on the protrusion from the discharge port side.

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