JPH0725330Y2 - Viscous contents pouring container cap - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a cap for a container for pouring viscous contents, and more specifically, pouring shampoo, rinse or similar viscous fluid from the inside of the container body. Regarding the cap of the container.

(Prior Art) Conventionally, when a shampoo, a rinse, or a similar viscous fluid contained in a container is poured out, the wall surface of the body of the container is pressed to pressurize the interior, and the container is attached to the container body. It was poured out so as to be pushed out from the spout of the cap. However, when the content is a viscous fluid, when the pressure in the container is released to stop the pouring, the fluid at the spout of the cap is not discontinuous, so-called dripping occurs, and the spout of the cap is discharged. There was a problem that it got dirty.

Therefore, for example, as disclosed in Japanese Patent Publication No. 58-7537, a cap that prevents dripping has been proposed.
The cap disclosed in the above publication has a cap body mounted on the mouth of a container body, a cap mounted on the upper part of the cap body and having an upper surface formed of a diaphragm, and a pouring opening formed at the center thereof. And a covered cover member. This cap body extends toward the center while inclining upward from three places on the lower inside of the peripheral rim.
Spokes of a book are formed, and thin flat wafers (discs) that engage so as to close the pouring opening of the cover member from the inside are provided on the upper surfaces of the end portions of the spokes. Further, an air introduction hole is formed in the cap body, an outer hole thereof is formed on the outer peripheral surface of the rim, and an inner hole is arranged in the central portion of the cap body like a nozzle.

In such a conventional cap, when pouring the viscous contents into the container body and pressurizing the inside of the container body, the entire diaphragm of the cover member is lifted by the internal pressure and the pouring opening is released from the wafer and opened. The viscous contents are poured from the. When the pressure in the container body is released, the pouring opening descends due to the restoring force of the diaphragm of the cover member, so that the pouring opening is engaged and closed, and the viscous contents are positively blocked at the pouring opening. To be done. The negative pressure generated in the container body at that time is dealt with by sucking external air from the air introduction hole.

Further, as disclosed in Japanese Utility Model Laid-Open No. 60-146049 and Japanese Utility Model Laid-Open No. 60-146051, caps which prevent dripping have been proposed. The cap disclosed in the above publication is
A pouring valve for pouring out the content liquid is provided on the peripheral side of the extrusion port of the container body, and an intake valve for inflowing outside air is provided at a position on the central side and below the pouring valve. Is a push-out container in which the inside and outside of the container body communicate with each other and are closed by opening and closing the intake valve.The valve body of the injection valve is gradually inclined upward toward the peripheral edge of the extrusion port, and the valve of the intake valve is closed. The body is gradually inclined downward toward the center of the extrusion port.

(Problems to be solved by the invention) However, although the cap described in Japanese Patent Publication No. S58-7537 has some dripping prevention effect, it passes through the opening immediately before the pouring opening is closed. The viscous contents inside cannot return to the inside of the cap, so it is not possible to completely prevent dripping from the pouring opening,
There was a problem.

Further, the caps described in Japanese Utility Model Laid-Open No. 60-146049 and Japanese Utility Model Laid-Open No. 60-146051 have a slightly higher effect of preventing dripping as compared with the caps of the prior art, but have the following problems. Existed.

First, both the injection valve body and the intake valve body of the valve member have thin-walled tips, which makes it difficult to obtain accuracy during injection molding.
There was a problem that the reliability of the hermeticity was poor. In particular, since the tip portion of the valve member is thin, viscous contents are always present between the pouring valve body and the pouring valve seat portion, and between the intake valve body and the intake valve seat portion. It was difficult to achieve perfect sealing.

Further, since the fixing means for fixing the discharge valve body and the intake valve body of the valve member to the valve member holding portion is locked only on one side, especially when the contents are discharged or the container is poured. There has been a problem that the valve member is likely to be accidentally detached from the valve member holding portion when the air after being discharged is sucked.

Further, since the cap is configured to be screwed to the container body with the male screw and the female screw, there is a problem that the viscous contents cannot be poured out by a simple one-touch operation.

The purpose of the present invention is to solve such a conventional problem, and when pouring viscous contents from a container by internal pressure, it can be performed by a simple one-touch operation. It is an object of the present invention to provide a cap for a viscous content pouring container which can ensure complete sealing and prevent dripping from the pouring port when the pouring is stopped.

(Means for Solving the Problems) The present invention has been made to solve the above problems, and adopts the means described below.

"A board 16 having a circular opening 15 is provided at the center of a lower cap portion 11 that is mounted in a pull-push manner on a mounting plug 2 screwed to a neck portion of a container body 1. A first tubular portion 17a that hangs along the peripheral edge of the opening 15 and a second tubular portion 17b that is similar to the outside of the tubular portion 17a in the radial direction are formed on the lower surface of the tubular portion 17b. An engaging projection 18 is formed on the side of the tip end thereof, a circular outlet 4 is provided in the upper plate 3 of the mounting plug 2, and a third tubular portion 5 is provided along the outlet 4 and around the outside thereof.
And the engaging projection 6 is formed on the outer side of the tip end of the tubular portion 5, and the tubular portion 5 is inserted into the annular groove 19 formed by the tubular portion 17a and the tubular portion 17b. The outlet portion 4 can be freely closed and opened by the tubular portion 17a, and the opening 15 of the board 16 can be freely opened.
A valve body holding leg 20 is discontinuously provided along the periphery of the valve body holding leg 20 to form a cutout portion 25, and the cutout portion 25 is used to transfer viscous contents from the opening 15 to the valve body holding leg 20 and the tubular portion 22. Space above board 16 between
As a flow passage into 26, the inside of the upper end of the valve body holding leg 20 is chamfered to form an inclined surface 21, and a tubular portion 22 is erected at a position radially outward from the valve body holding leg 20. An upward taper surface 23 is formed on the inner peripheral surface of the tubular portion 22, and the lower cap portion is formed.
A spout 29 is formed in the center of the upper plate 27 of the upper cap part 14 that is closely attached to the upper cap part 11, and a plurality of presser legs 30 are discontinuous on the lower surface of the upper plate 27 so as to surround the spout 29. To form a notch-like portion 32, and the notch-like portion 32 serves as a communicating portion for communicating the spout 29 with the lower surface space of the upper plate 27 outside the holding leg 30. The outside of the lower end of the spout is chamfered to form an inclined surface 31, and the spout
The inverted truncated cone-shaped plug portion 12 having a tapered surface 33 on its outer peripheral surface so that the plug portion 12 can be hung directly below without closing.
And the lower cap portion 11 and the upper cap portion 14 are provided.
A donut-shaped valve body 13 is placed in the space between and
A downward tapered surface is formed on the outer peripheral end surface 34 of 13 so as to be in close contact with the tapered surface 23 of the tubular portion 22, and an upward tapered surface is formed on the inner peripheral end surface 35 of the valve body 13 to form the plug portion 12. The inner peripheral end surface of the valve body 13 can be freely attached to the tapered surface 33.
An inclined portion 36 is formed in the intermediate portion between the outer peripheral end surface 34 and the outer peripheral end surface 34, and the inclined portion 36 is formed on the inclined surface of the valve body holding leg 20 of the lower cap portion 11.
21.
When the inside of the container body 1 is pressed and supported by being sandwiched between the inclined surfaces 31 of 30, the outer peripheral portion of the valve body 13 bends and the tubular portion 22
When a flow path is formed away from the taper inner peripheral surface 23 and the inside of the container body 1 becomes negative pressure, the inner peripheral portion of the valve body 13 bends and the taper outer peripheral surface 33 of the plug portion 12 is formed. A flow path is formed apart from the above, and a void portion 39 that connects the content pouring outlet 29 and the flow path is formed in the upper cap portion 14.

(Operation) According to the cap of the container for pouring viscous contents of the present invention, when the viscous contents are pressurized from the main body of the container, either the outer peripheral side or the inner peripheral side of the valve body is pressed. Bends and the end part separates from the contact surface, and the content pouring outlet of the upper cap part communicates with the mouth part of the container body via the flow path exposed thereby, and the viscous content in the container body contents Derived from the pouring outlet. Next, when the pressing of the container body is released to stop the pouring of the contents, the inside of the container body is depressurized to a negative pressure. Therefore, either the outer peripheral side or the inner peripheral side of the valve body, which has been bent and separated from the contact surface at the time of pouring the content, again comes into close contact with the contact surface and closes the flow path for pouring the content. On the contrary, either the outer peripheral side or the inner peripheral side of the valve body is bent by negative pressure and the end part separates from the contact surface, and the contents of the upper cap part are poured through the flow path developed by this. The outlet communicates with the inside of the container body, and air is rapidly sucked into the container body from the content pouring outlet. Therefore, the viscous content that remains attached to the content pouring port is returned to the inside of the container body by the flow of air drawn from the pouring port.

(Example) Hereinafter, the cap of the container for pouring viscous contents of the present invention will be described in more detail with reference to the example shown in the accompanying drawings.

FIG. 1 shows a cap (hereinafter simply referred to as a cap) 10 of a viscous content pouring container according to a first embodiment of the present invention. The cap 10 of this embodiment is roughly divided into a lower cap portion 11, a plug portion 12, a flexible valve body 13, and an upper cap portion 14.

As shown in FIG. 2, the lower cap portion 11 has a board body 16 having a circular opening 15 formed in the center thereof. The board body 16 is provided on the lower surface of the board body 16 along the periphery of the opening 15 and hangs down. The first tubular portion 17a and the second tubular portion 17b similar to the first tubular portion 17a are formed outside the tubular portion 17a in the radial direction. These two tubular parts 17a, 1
7b is for attaching the lower cap portion 11 to the attachment plug 2 screwed to the neck portion of the container body 1 so that the outlet can be opened and closed by pull-pushing, that is, moving up and down, and the tubular portion 17b An engaging protrusion 18 is formed on the tip side portion of the.

The mounting plug 2 is provided with a circular outlet 4 formed in the upper plate 3 thereof, and along the outlet 4, the first cylindrical portion 17a and the second cylindrical portion described above are provided around the outer periphery thereof. Annular groove 19 with 17b
A third tubular portion 5 inserted into the upper portion is formed upright. An engagement protrusion 6 is also formed on the outer side of the tip of the third tubular portion 5.

The board body 16 of the lower cap portion 11 includes the first and second tubular portions.
The third tubular portion 5 of the attachment plug 2 is inserted into the annular groove 19 between the 17a and 17b to be assembled. At that time, the first tubular portion
17a enters the outflow port 4 and closes the outflow port 4.
When the board 16 is pulled upward, the back end of the tubular portion 17a rises to open the outlet 4, and the tip end engaging projection 18 of the tubular portion 17b engages with the third tubular portion 5. The protrusion 6 is engaged and stopped, and the open state of the outflow port 4 is maintained.

On the other hand, on the upper surface of the board body 16, the valve body holding legs 20 are formed upright along the peripheral edge of the opening 15 but discontinuously. The inside of the upper end of each valve body holding leg 20 is chamfered
It is said to be 21. In addition, on the top surface of the board body 16,
A tubular portion 22 that is erected at a position radially outward of 20 is formed,
Its inner peripheral surface is an upward taper surface (hereinafter referred to as a tapered inner peripheral surface) 23. Further, a tubular hook 24 for adjusting the outer circumference is erected on the tubular portion 22 at a radially outer position, and an engaging projection 24a is formed on the outer periphery of the tip end of the tubular hook. The cut-out portion 25 between the valve body holding legs 20 that appears by disposing the valve body holding legs 20 discontinuously described above is provided between the valve body holding legs 20 and the tubular portion 22 with viscous contents from the opening 15. It is used as a flow passage for flowing into the space 26 above the board 16.

The upper cap portion 14 is attached to the upper portion of the board 16 in the lower cap portion 11 as described above. This upper cap part
As shown in detail in FIG. 3, reference numeral 14 is a lid shape having an outer peripheral alignment wall 28 on the lower peripheral portion of the upper plate 27, and the outer peripheral alignment wall 28 engages with the inner peripheral portion of the lower end thereof. The protrusion 28a is formed,
When fitted on the outer side of the cylindrical hook 24 of the lower cap portion 11, the engaging projections 24a and 28a are engaged with each other so as to be intimately engaged with each other.

A spout 29 is formed at the center of the upper plate 27 in the upper cap portion 14, and a plurality of pressing legs 30 arranged on the lower surface of the upper plate 27 so as to surround the spout 29 are formed by hanging down. The outside of the lower end of each pressing leg 30 is chamfered to form an inclined surface 31. The plurality of presser legs 30 are used for the valve body 13 described later.
As shown in FIG. 1, they are held in cooperation with the valve body holding leg 20 of the lower cap portion 11, and therefore their positions and circumferential width dimensions substantially correspond to those of the valve body holding leg 20. To do. Further, the cutout portions 32 between the presser legs 30 that are exposed by disposing the presser legs 30 discontinuously are formed by the spout 29 and the presser legs.
It is used as a communication part that communicates with the lower surface space of the upper plate 27 outside of 30. Therefore, the void portion 39 is formed inside the upper cap portion 14 including the communicating portion 32 and the lower space of the upper plate 27, and the void portion 39 communicates with the spout 29.

On the lower surface of the upper plate 27 of the upper cap portion 14, an inverted frustoconical plug portion 12 is arranged immediately below the spout 29, and the plug portion 12 is provided.
Both ends of the crosspiece 12a formed on the upper surface are the contents pouring port 29
It is provided so that it can be suspended directly below it without blocking the spout 29. In practice, the plug portion 12 is integrally formed with the upper cap portion 14. Further, since the plug portion 12 has the inverted truncated cone shape as described above, the outer peripheral surface thereof is the tapered surface (hereinafter referred to as the tapered outer peripheral surface) 33.

The valve element 13 arranged in the space between the lower cap portion 11 and the upper cap portion 14 is a donut-shaped diaphragm, and as shown in FIG. 4, the outer peripheral end surface 34 has a downward tapered surface. In addition, the inner peripheral end surface 35 is an upwardly tapered surface. The valve body 13 has an intermediate portion 36 between the inner peripheral end surface 35 and the outer peripheral end surface 34 as an inclined portion, and the inclined portion 36 is placed on the inclined surface 21 of the valve body holding leg 20 in the lower cap portion 11. The upper cap portion 14 is sandwiched and supported by the inclined surface 31 of the pressing leg 30 in the upper cap portion 14.

Further, when the valve element 13 is arranged as described above, the outer peripheral end surface 34 thereof is in close contact with the tapered inner peripheral surface 23 of the tubular portion 22 as shown in FIG. 1, and the inner peripheral end surface 35 is a plug. It is formed so as to be in close contact with the tapered outer peripheral surface 33 of the portion 12.

Next, the operation of the cap 10 configured as described above will be described with reference to FIGS. 5 and 6.

When pouring viscous contents from the container body 1, as shown in FIG. 5, when the cap 10 is pulled up with respect to the mounting plug 2, as described above, the second cylindrical portion hanging from the board 16 is drawn. The tip engaging protrusion 18 of 17b is locked by the tip engaging portion 6 of the third tubular portion 5 of the mounting plug 2 and stops, and at the same time, the tip portion of the first tubular portion 17a comes out of the outlet 4. It is pulled out and opened. Next, the wall surface of the container body 1 is pressed to
When the inside is pressurized, pressure is applied to the entire lower surface of the valve body 13.
As a result, the valve body 13 should be lifted up, but its inner peripheral end surface
Since the taper outer peripheral surface 33 of the plug portion 12 is downward, 35 is more closely contacted, while the outer peripheral side is bent and the outer peripheral end surface 34 is separated from the taper inner peripheral surface 23 of the tubular shape 22 to expose the flow path 37. as a result,
The viscous content flows from the spout 4 through the opening 15, the flow passage 25, the space 26, and the flow passage 37 into the space 39 above the valve body 13 as shown by the arrow in FIG. It is poured out of the cap 10 from the spout 29 via the spout. At that time, stoppers 27a are provided at a plurality of positions on the lower surface of the upper plate so that the outer peripheral side of the valve body 13 does not come into contact with the lower surface of the upper plate 27 of the upper cap portion 14 to block the flow to the gap 39.

Next, when the pressing of the container body 1 is released to stop the pouring of the contents, the container body 1 is decompressed to a negative pressure. Therefore, the outer peripheral end surface 34 of the valve body 13 that has been bent and separated from the taper inner peripheral surface 23 of the tubular portion 22 when the contents are poured out adheres to the taper inner peripheral surface 23 due to the self-restoring force and the negative pressure, and the valve body 13
Due to the negative pressure applied to the entire upper surface of the plug, the inner peripheral side is bent as shown in FIG. 6, and the inner peripheral end surface 35 is separated from the tapered outer peripheral surface 33 of the plug portion 12 to expose the flow path 38. as a result,
As shown in FIG. 6, air flows from the spout 29 to the flow path 38,
It is drawn into the container body 1 through the opening 15 and the outlet 4. Therefore, the viscous contents attached to the spout 29 are drawn into the container body 1 together with the air.

As described above, according to the cap 10, the air is rapidly drawn into the container body 1 through the same spout 29 after the viscous content is spouted from the spout 29, so that the air remains attached to the spout 29. The contents are also drawn in, and as a result, no dripping occurs and it can be kept in a clean state at all times.

Next, FIG. 7 shows a cap according to a second embodiment of the present invention.
40 is shown. Cap 40 according to the second embodiment
Is a tubular portion 43 formed by integrally hanging a portion corresponding to the tubular portion 22 of the cap 10 of the first embodiment on the upper plate 42 of the upper cap portion 41, and the outer periphery of the valve body 13. The inner peripheral surface in contact with the end surface 34 is a downward tapered surface 44, and the portion corresponding to the plug portion 12 is a plate body 46 in the lower cap portion 45.
Is formed by a plurality of support rods (not shown) extending in the radial direction at the center of the opening 47 provided at the center of the stopper portion 48 formed into a trapezoidal shape, and the inner peripheral end surface 35 of the valve body 13 is It is the same as the cap 10 of the first embodiment, except that the outer peripheral surface to be contacted is an upward tapered surface 49.

According to the operation of the cap 10 of such an embodiment, when the contents are poured out from the container body 1, the inner peripheral side of the valve body 13 is bent and the inner peripheral end surface 35 is separated from the tapered outer peripheral surface 49 of the plug portion 48,
A channel is formed to connect the opening 47 to the spout 29, while the outer peripheral side of the valve body 13 bends when the air is sucked into the container body 1, and the outer peripheral end surface 34 separates from the tapered inner peripheral surface 44 of the tubular portion 43.
The opening 47 is spouted through the space 26 outside the valve body holding leg 20.
A flow path communicating with the. As described above, the flow at the time of pouring out the contents and the flow at the time of sucking in the air are opposite to those in the case of the cap 10 of the first embodiment, but when the air is sucked in, the contents remaining on the spout 29 are sucked together. There is no difference in terms of preventing dripping.

Further, FIG. 8 shows a cap according to a third embodiment of the present invention.
Fifty is shown. In the cap 50 of this embodiment, the valve body
A protrusion-shaped seal portion 52 is formed on the entire circumference of the lower surface of the outer peripheral side of 51,
A similar protruding seal portion 53 is also formed on the entire inner surface of the upper surface, and the former seal portion 52 is the plate body 55 of the lower cap portion 54.
The upper surface is in contact, and the latter seal portion 53 is in contact with the bottom surface of the plug portion 12. This eliminates the need for the tubular portions 22,43 having the tapered inner peripheral surfaces 23,44 with which the outer peripheral end surface 34 of the valve body 13 constructed in the first and second embodiments comes into contact, and the valve body 13
It is not necessary to form a tapered outer peripheral surface on the inner peripheral end surface 35 of the plug on the plug portion. The structure other than these is the same as that of the cap 10 of the first embodiment.

Although the spout 29 is formed in the central portion of the upper plate of the upper cap portion in each of the above-described embodiments, it does not have to be the central portion like the upper cap portion 56 shown in FIG. Void formed inside the part 56
Any position that communicates with 39 is acceptable. When the spout 29 is formed so as to be deviated from the central portion of the upper plate 57 in this way, the plug portion 12 can be integrally formed so that the upper portion thereof closely adheres to the central portion of the upper plate. It will be easy.

(Effects of the Invention) As described above, according to the cap of the container for pouring viscous content of the present invention, the viscous content remains attached to the pouring outlet by using the air flow sucked into the container body after pouring out. Since the viscous content is sucked into the container body, it is possible to prevent dripping from the spout and keep the spout clean.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a cap of a viscous content pouring container according to a first embodiment of the present invention about half from a center line, and FIG. 2 (a) is a top view of a lower cap portion, FIG. (B) is a partially cutaway front view of the lower cap portion, FIG. 3 (a) is a top view of the upper cap portion, and FIG. 3 (b) is a sectional view of the upper cap portion. 3 (c) is a bottom view of the upper cap portion, FIG. 4 (a) is a top view of the valve body, and FIG. 4 (b) is a front view of the valve body partially broken away.
FIG. 4 (c) is a bottom view of the valve body, FIG. 5 is a sectional view of a half of the center line showing the operation at the time of pouring the contents in the cap shown in FIG. 1, and FIG. In the cap shown in the figure, a cross-sectional view of a half of the center line showing the operation of the suctioned state of air after pouring out contents, FIG. 7 is a viscous contents pouring container according to a second embodiment of the present invention 8 is a cross-sectional view showing the cap of FIG. 8 about half the center line, FIG. 8 is a cross-sectional view showing the cap of the viscous content pouring container according to the third embodiment of the present invention half the center line, and FIG. It is sectional drawing which shows the other modification of a cap part. 1 ... Container body, 4 ... Outflow port, 10, 40, 50 ... Cap, 11 ...
Lower cap part, 12 ... Plug part, 13 ... Valve body, 14 ... Upper cap part, 15 ... Opening, 16 ... Board body, 20 ... Valve body holding leg, 22 ... Cylindrical part, 23 ... Tapered inner peripheral surface, 24 … Cylindrical hooks, 25… Flow passages, 26… Spaces, 28… Outer peripheral alignment walls, 29… Spouts, 30…
Presser foot, 32 ... Communication part, 33 ... Tapered outer surface, 39 ... Vacation part.

Claims (1)

[Scope of utility model registration request] 1. A circular opening (15) is formed in the central portion of a lower cap portion (11) which is attached in a pull-push type to a mounting plug (2) screwed to a neck portion of a container body (1). The formed plate body (16) is provided, and the diameter of the first cylindrical portion (17a) and the diameter of the cylindrical portion (17a) that hang down on the lower surface of the plate body (16) along the periphery of the opening (15). A similar second tubular portion (17b) is formed on the outer side in the direction, and an engaging projection (1) is formed on the tip side portion of the tubular portion (17b).
8) is formed, a circular outlet (4) is provided on the upper plate (3) of the attachment plug (2), and a third cylindrical portion is provided along the outlet (4) around the outside thereof. (5) is provided upright, an engaging protrusion (6) is formed on the outer side of the tip end of the tubular portion (5), and the tubular portion (5) is connected to the tubular portion (17a) and the tubular portion ( 17b) and can be inserted into the annular groove (19) formed by
In (a), the outlet (4) can be freely closed and opened, and the disc-holding legs (20) are erected discontinuously along the peripheral edge of the opening (15) of the plate (16) to form a notched portion. (25), the notch-like portion (25) through the opening (15) to transfer viscous contents to the space above the plate body (16) between the valve body holding leg (20) and the tubular portion (22). The inside of the upper end of the valve body holding leg (20) is chamfered to form an inclined surface (21) as a flow passage that flows into the (26), and the pipe is located radially outward of the valve body holding leg (20). The part (22) is erected, and the upward tapered surface (2
3) is formed, and a spout (29) is formed in the center of the upper plate (27) of the upper cap part (14) closely attached to the lower cap part (11). A plurality of presser legs (30) are suspended from the lower surface of the upper plate (27) so as to surround the upper surface of the upper plate (27) so as to form a notch-like portion (32), and the notch-like portion (32) is formed. The outlet (29) communicates with the lower space of the upper plate (27) outside the presser foot (30), and the lower end outside of each presser foot (30) is chamfered to form an inclined surface (31). An inverted frustoconical plug having a tapered surface (33) on its outer peripheral surface so that it can be hung directly below the spout (29) without closing the spout (29). And a donut-shaped valve body (13) in the space between the lower cap part (11) and the upper cap part (14).
And a downward tapered surface is formed on the outer peripheral end surface (34) of the valve body (13) to form the tapered surface (2
3), which can be attached freely to the inner peripheral end face (35) of the valve body (13).
An upward taper surface is formed on the inner surface of the valve body (13) so that it can be brought into close contact with the taper surface (33) of the plug portion (12). Inclined part (3
6) is formed, and the inclined portion (36) is placed and positioned on the inclined surface (21) of the valve body holding leg (20) of the lower cap portion (11) to position the upper cap portion (14). When the inside of the container body 1 is pressurized and supported by being sandwiched between the inclined surfaces (31) of the presser legs (30), the outer peripheral portion of the valve body (13) bends and the cylindrical portion (22) When a flow path is formed away from the taper inner peripheral surface (23) and the inside of the container body (1) has a negative pressure,
The inner peripheral portion of the valve body (13) bends, a flow path is formed apart from the tapered outer peripheral surface (33) of the plug portion (12), and the content pouring outlet ( A cap for a container for pouring viscous contents, characterized in that a void portion (39) communicating with the flow channel (29) is formed.