JP7395537B2 - cap and container - Google Patents

Description

The present invention relates to a cap having a nozzle that is attached to a container containing a plastic fluid such as mayonnaise, and a container having the cap or the nozzle.

BACKGROUND ART Conventionally, as a cap attached to a container containing a plastic fluid such as mayonnaise, a cap having a nozzle projecting from the cap has been known.

For example, in Patent Document 1 listed below, the structure of the tip of the nozzle is such that a tip extension part is provided at the tip of the flow path of the nozzle discharge port, and a part of the inner surface of the nozzle wall in the circumferential direction is provided, for example, like the nib of a fountain pen. By making the tapered shape and extending it forward, the amount of residual liquid that adheres to the vicinity of the nozzle discharge port when discharging the liquid content, which adheres to the inner surface of the upper wall due to surface tension, is greater than that which adheres to the inner surface of the lower wall. A suck-back nozzle is disclosed which is intended to prevent dripping by increasing the amount of liquid dripping from the inner surface of the lower wall and reducing the amount of liquid that drips downward from the inner surface of the lower wall.

Japanese Patent Application Publication No. 2006-111319

However, even if the technology described in Patent Document 1 is used, if a highly viscous fluid such as mayonnaise is discharged sideways, mayonnaise may remain at the nozzle opening or at the upper or lower part of the nozzle. Liquid will stick to it.

Furthermore, when the tip angle of the nozzle becomes large as in the technology described in Patent Document 1, the height of the nozzle, the height of the lid nozzle, and the height of the lid become large, which increases the unit weight. , the cost will increase.

In view of the above circumstances, an object of the present invention is to provide a cap and a cap that can prevent plastic fluid, which is the content of a container, from adhering to a spouting part during discharge while minimizing cost increase. An object of the present invention is to provide a container with a cap.

In order to achieve the above object, a cap according to one embodiment of the present invention includes a cap main body and a spouting part. The cap body is attached to an opening of a container containing plastic fluid. The spout is formed in the cap main body, and has at least two channels having different cross-sectional areas, each of which guides, merges, and discharges the contents.

With this configuration, by having at least two channels with different cross-sectional areas inside the spouting part, a difference in flow velocity occurs when the fluids in each channel merge and are discharged. , a force is generated by the flow that is fast and slow, and the force that causes the fluid to be drawn in at the tip of the spouting part is suppressed. Thereby, it is possible to prevent the plastic fluid, which is the content of the container, from adhering to the spouting part when being discharged. Further, according to the above configuration, only by providing a plurality of channels inside the spouting section, there is no need to design the spouting section to be excessively large, so that it is possible to minimize cost increase. Here, the spouting part is typically a nozzle (cylindrical body) formed to protrude from the cap body, but is not limited to a nozzle, and only the discharge port is exposed to the cap body, and the spout part is It may have each flow path. Further, the flow path does not need to be provided from the lower end to the upper end within the spouting section, and may be provided at least in a part of the spouting section in the discharge direction. Furthermore, examples of the plastic fluid include, but are not limited to, mayonnaise, ketchup, margarine, toothpaste, shampoo, conditioner, and paint.

The cross-sectional area ratio of the two channels may be 1:2 or more.

As a result, a difference in flow velocity of 1:2 or more is generated between the fluids in each flow path, thereby making it possible to further prevent the content from adhering to the spouting part when discharging the contents.

The spouting part may be formed to protrude from the cap main body. In this case, the discharge port of the spouting part through which the contents are discharged may have a discharge surface inclined at 0° to 25° with respect to a plane perpendicular to the projecting direction.

As a result, while the dispensing surface at the opening end of the spout is inclined, the inclination angle is kept to 25 degrees or less, thereby minimizing the cost increase and reducing the difference in flow velocity between each channel during dispensing. By allowing this to occur, it is possible to further prevent adhesion to the lower side of the spouting part during dispensing.

The two channels may be formed by a partition plate parallel to the protruding direction that partitions the internal space of the spouting section.

Thereby, by simply providing a partition plate inside the spouting part, the inside of the spouting part can be divided into two to form two flow paths. Here, the partition plate does not need to completely divide the inside of the spouting part into two spaces, and there is a part where the flow path is not divided into two (for example, a slit part formed in the partition plate). You can.

The cap may further include a cover cap that is openably and closably connected to the cap body via a hinge provided at an end of the surface on which the spouting part is formed of the cap body. In this case, the two flow paths include a first flow path provided inside the nozzle on the side of the hinge portion and having a first cross-sectional area, and a first flow path provided inside the nozzle on the side opposite to the hinge portion. The second flow path may have a second cross-sectional area larger than the first cross-sectional area.

As a result, it is considered normal for the user to open the cover cap and discharge the contents with the hinge portion facing up, but in that state, the flow path with the smaller cross-sectional area is on the upper side. By forming two flow paths, the speed of the upper flow path is slowed down, and a force is generated that pulls the contents upward during dispensing, which reduces the force that causes the contents to be caught under the spout part due to gravity. It is possible to further prevent adhesion caused by.

A container according to another embodiment of the present invention includes a container body and a pouring portion. The container body can be filled with plastic fluid. The spouting section is formed on an end surface of the container body, and has at least two flow paths having different cross-sectional areas inside thereof, each of which guides, merges, and discharges the contents poured out from the container body. .

As a result, the container has at least two flow paths with different cross-sectional areas inside the spout portion formed (integrally) on the end surface of the container, so that the fluids in each flow path merge and are discharged. Sometimes, a difference in flow velocity occurs, and this difference in flow velocity generates a force that causes a fast flow to be pulled by a slow flow, and suppresses the force that causes the fluid to be drawn in at the distal end of the spouting part. Thereby, it is possible to prevent the plastic fluid, which is the content of the container, from adhering to the spouting part when being discharged. Further, according to the above configuration, only by providing a plurality of channels inside the spouting section, there is no need to design the spouting section to be excessively large, so that it is possible to minimize cost increase.

As described above, according to the present invention, it is possible to prevent the plastic fluid, which is the content of the container, from adhering to the spouting part during discharging while minimizing cost increase. However, this effect does not limit the present invention.

FIG. 1 is a cross-sectional view of a container according to an embodiment of the present invention in a front view direction. FIG. 2 is a sectional view showing details of the cap of the container shown in FIG. 1 in comparison with a conventional cap. FIG. 3 is a schematic plan view of the cap shown in FIG. 2; FIG. 2 is a diagram for explaining the cause of viscous fluid such as mayonnaise adhering to the nozzle tip of a conventional cap nozzle. FIG. 2 is a diagram for explaining the cause of viscous fluid such as mayonnaise adhering to the nozzle tip of a conventional cap nozzle. It is a figure explaining the concept for calculating the flow velocity of the pipe line whose cross section is not circular. It is a figure explaining the concept for calculating the flow velocity of the pipe line whose cross section is not circular. It is a figure explaining the concept for calculating the flow velocity of the pipe line whose cross section is not circular. It is a figure showing the calculation result of the flow velocity difference between two channels which a nozzle of a cap concerning an embodiment of the present invention has. FIG. 3 is a diagram for explaining the behavior of mayonnaise passing through two flow paths included in the nozzle of the cap according to the embodiment of the present invention. 11 is a diagram for explaining the principle of behavior of mayonnaise shown in FIG. 10. FIG. It is a figure explaining three stages of pushing speeds in an extrusion test conducted on a nozzle of a mayonnaise container according to an embodiment of the present invention. It is a figure showing the behavior of mayonnaise during the above-mentioned extrusion test. It is a figure showing the result of the above-mentioned extrusion test. It is a photograph showing how contents adhere to a conventional nozzle.

Embodiments of the present invention will be described below with reference to the drawings.

[Container overview]
FIG. 1 is a cross-sectional view of a container according to an embodiment of the present invention as viewed from the front. Further, FIG. 2 is a sectional view showing details of the cap (FIG. 2A) of the mayonnaise container shown in FIG. 1 in comparison with a conventional cap (FIG. 2B). 3 is a schematic plan view of the cap shown in FIG. 2A.

As shown in FIG. 1, a container 100 according to the present embodiment includes a bottle-shaped container body 20 and a cap 10 attached to the container body 20.

The container body 20 accommodates, for example, a viscous content (plastic fluid; not shown). Examples of plastic fluids include, but are not limited to, mayonnaise, ketchup, margarine, toothpaste, shampoo, conditioner, and paint. In this embodiment, the content is mayonnaise.

The container main body 20 has a cylindrical neck 21 at the top, and below the neck 21 has an outwardly curved shoulder 22, and the shoulder 22 is connected to the body 23 below, The lower end of the body 23 is closed with a bottom 24.

As shown in FIG. 1, the upper end of the neck 21 is open, and mayonnaise is poured through the neck 21.

A thread 21b for screwing the cap 10 is formed on the outer circumferential surface of the neck portion 21, and the thread 21b and the thread 1a formed on the inner surface of the cap 10 engage with each other, so that the cap 10 is tightened. The cap 10 is fixed to the container body 20 by the engagement between the inner top surface and the bottle top surface.

The cap 10 includes a cap body 1 screwed to a neck 21 of a container body 20, and a cover cap 3 connected to the cap body 1 via a hinge 7.

The cap body 1 consists of a top plate 1b and a cylindrical side wall, and the inner surface of the side wall has a thread 1a that threadably engages with the thread 21b provided on the outer surface of the neck 21 of the container main body 20. It is formed.

Furthermore, a nozzle 2 is formed to protrude from approximately the center of the top plate 1b. This nozzle 2 serves as a dispensing path for dispensing mayonnaise, which is the content of the container 100, and is hollow, and its interior communicates with the internal space of the container body 20 in which the mayonnaise is accommodated. .

Further, the cover cap 3 is connected to the cap body 1 so as to be openable and closable via a hinge portion 7 provided at the end of the top plate 1b, which is the surface on which the nozzle 2 is formed, of the cap body 1. . 1 to 3, the cap 10 is shown in an open state.

As shown in FIGS. 1 to 3, the cover cap 3 is formed in a shape that covers the upper part of the cap body 1 when it is closed. A nozzle cover 6 that can cover the upper part of the nozzle 2 is formed on the top surface of the cover cap 3. When the cover cap 3 is closed, it covers the entire cap body 1 and also covers the nozzle. It is possible to cover the nozzle 2 with the cover 6.

[Nozzle configuration details]
As shown in FIGS. 2A and 3, the nozzle 2 is different from the nozzle N in the conventional cap C shown in FIG. ) has a partition plate 5 parallel to the

The inner diameter of the nozzle 2 is, for example, 4.0 mm, and the thickness of the partition plate is, for example, 0.5 mm, but is not limited to these. The length of the partition plate 5 in the Y direction in each figure is, for example, from the discharge port of the nozzle 2 to the vicinity of the position where the shape of the nozzle 2 changes from cylindrical to conical (for example, 2.5 mm to 3.5 mm). degree), but is not limited to this.

The partition plate 5 is provided at a position offset from the center of the nozzle 2 in the X direction of each figure, and as a result, two flow channels (no. A first flow path 11 and a second flow path 12) are formed.

The first flow path 11 and the second flow path 12 respectively guide the mayonnaise, which is the content poured out from the neck 21 (opening 21a) of the container body 20, to join together at the discharge port 4 and to be discharged.

Of these two flow paths, the first flow path 11 is provided on the side of the hinge portion 7 inside the nozzle 2, and the second flow path is provided on the side opposite to the hinge portion 7 inside the nozzle 2. , the cross-sectional area of the first flow path 11 is smaller than the cross-sectional area of the second flow path 12. The cross-sectional area ratio of the first flow path 11 and the second flow path 12 is preferably 1:2 or more.

Although the details will be described later, in this embodiment, the nozzle 2 is configured such that when the mayonnaise flowing through each flow path merges and is discharged due to the difference in cross-sectional area of the first flow path 11 and the second flow path 12, A difference in flow velocity is generated, thereby preventing mayonnaise from adhering (remaining) to the tip of the nozzle 2 during discharge.

Further, as shown in FIG. 2, the discharge port 4 of the nozzle 2 has a first flow path 11 side facing a second flow path 12 with respect to a plane (X plane) perpendicular to the protruding direction (Y direction) of the nozzle 2. It may be inclined so as to protrude from the sides. This inclination angle θ is, for example, 20°, but is not limited to this, and can be set to any angle from 0° to 25°, for example, as described later.

[Problems with conventional technology]
Here, in a conventional cap nozzle for a container containing a viscous fluid such as mayonnaise, the cause of the content adhering (remaining) to the nozzle tip during discharge will be explained. FIG. 4, FIG. 5, and FIG. 15 are diagrams for explaining the cause.

As shown in Fig. 4, one of the above causes is gravity and the high wettability of the contents on the nozzle 2 surface (easily wettable), so that when ejecting from the ejection port O, as shown by the black arrow in the figure, , the contents M tend to get caught up in the tip of the nozzle N.

That is, as shown in the figure, on the lower side of the nozzle N, the content M adheres to the vicinity of the discharge port O due to the wettability of the content M, and is pushed by gravity and further adheres to the vicinity of the discharge port O. As a result, an adhesion phenomenon (engulfment phenomenon) such as getting caught up in the discharge port O is likely to occur.

Another reason is that viscous fluids such as mayonnaise are plastic fluids and do not flow unless an external force is applied to them, so they remain in the same shape as when the liquid is drained after the contents are discharged.

That is, as shown in FIG. 5A, during extrusion, the content M runs out of liquid while dripping near the discharge port O due to its own weight.

Subsequently, as shown in FIG. 5B, the content M remains in the vicinity of the discharge port O of the nozzle N in a dehydrated state because it is a plastic fluid, and is pushed out by the content M pushed out later.

Then, as shown in FIG. 5C, the content M is further pushed out by the content M pushed out from behind, sag due to its own weight, and approaches the discharge port O in a state where the liquid is drained.

Further, FIG. 15A shows the discharge state of the contents M in a conventional nozzle N in which the inclination angle of the discharge port O is 20 degrees, and FIG. 15B shows the discharge state of the contents M in the conventional nozzle N in which the inclination angle is 40 degrees. It can be seen that in the nozzle N of FIG. In addition, in a nozzle N with a large inclination angle as shown in FIG. It can be seen that the phenomenon of entrainment of the contents M occurs above the discharge port O, which corresponds to the tip of the discharge port O.

The above is considered to be the cause of adhesion of contents in conventional nozzles.

Therefore, in this embodiment, as described above, the inside of the nozzle 2 is divided into the first flow path 11 and the second flow path 12 having different cross-sectional areas, and a flow velocity difference is generated between the two flow paths. This prevents the contents from adhering to the nozzle 2 during discharge.

[Flow velocity of the first flow path and the second flow path of the nozzle]
Here, the flow rate of the contents in the first flow path 11 and the second flow path 12 will be explained. 6 to 8 are diagrams showing a concept for calculating the flow velocity of the first flow path 11 and the second flow path 12.

As described above, the first flow path 11 and the second flow path 12 both have a semicircular cross section and are not circular tubes. As shown in FIG. 6, a pipe having a non-circular cross section can be treated in the same way as a circular pipe by determining the equivalent diameter of the flow channel.

That is, if the wetted edge length of a conduit having a non-circular cross section such as a half-moon shape is L and the cross-sectional area is S, its equivalent diameter De can be expressed as De=4×S/L.

Therefore, the present inventors considered the first flow path 11 and the second flow path 12 in this embodiment as two circular pipes 11' and 12', as shown in FIG. The difference was calculated.

Here, the flow rate is a value obtained by dividing the flow rate by the pipe cross-sectional area, and is inversely proportional to the square of the pipe diameter if the flow rate is the same.
V=Q/(πx ² /4) (where, V is the flow velocity, Q is the flow rate, x is the pipe diameter, and πx ² /4 is the cross-sectional area.)

The flow rate of the pipe is proportional to the fourth power of the pipe diameter (according to the Hagen-Poiseuille law). Therefore, it can be said that the flow rate at a pipe branch is proportional to the fourth power of the pipe diameter ratio.

Then, if the pipe diameter of the smaller diameter flow path is a and the pipe diameter of the larger diameter flow path is b, as shown in FIG. 8A, for example, when b = 2a, the large diameter flow path The flow rate Q _b is 16 times the flow rate Q _a of the small diameter channel.

As shown in FIG. 8B, when the pipe diameter ratio of both channels is n, and the flow velocity ratio is calculated based on the above flow rate ratio, the flow velocity Vb of the large diameter channel and the flow velocity Va of the small diameter channel. It can be seen that the flow velocity ratio is proportional to the square of the pipe diameter ratio n.

Furthermore, as shown in FIG. 8C, when calculating the ratio of the cross-sectional areas in FIG. It can be seen that the diameter ratio is proportional to the square of the diameter ratio n, and the cross-sectional area ratio in the two channels can be replaced with the flow velocity ratio in the two channels. (R indicates the pipe cross-sectional area.)

FIG. 9 shows the cross-sectional area ratio (distance from the center of the nozzle 2 to the center of the partition plate 5) of the first flow path 11 and the second flow path 12 in the nozzle 2 based on the relationship of the flow velocity ratio calculated above. It is a figure which showed the result of having changed and calculated the flow velocity difference of both flow paths. The partition plate 5 is moved from the center of the nozzle 2 toward the first flow path 11 side.

In the figure, what is shown as "upper side" corresponds to the first flow path 11, and what is shown as "lower side" corresponds to the second flow path 12.

As shown in the figure, it can be said from calculation that as the cross-sectional area ratio of both flow paths increases, the speed ratio of both flow paths also increases.

[Effect of preventing contents from adhering to the nozzle]
Based on the above discussion, the effect of preventing the contents M from adhering to the nozzle 2 of the container 100 according to the present embodiment will be explained. FIG. 10 is a diagram for explaining the behavior of mayonnaise passing through the two flow paths of the nozzle 2 of the cap 10 according to the present embodiment. Further, FIG. 11 is a diagram for explaining the principle of behavior of mayonnaise shown in FIG. 10.

As shown in FIG. 10, the inside of the nozzle 2 is divided by a partition plate 5 into a first flow path 11 (small cross-sectional area) and a second flow path 12 (large cross-sectional area) having different cross-sectional areas. , the flow rate and flow velocity of mayonnaise M during discharge in both channels are larger in the second channel 12 than in the first channel 11.

As a result, when mayonnaise M is discharged in a state where the nozzle 2 is in the posture shown in the figure (the first flow path 11 is on the upper side and the second flow path 12 is on the lower side), from each flow path, the first discharge When the mayonnaise M discharged through the outlet 11a and the second outlet 12a merge, due to the above-mentioned flow velocity difference, the fast flow at the second outlet 12a is accompanied by the slow flow at the first outlet 11a, causing an upward flow. A force (arrow F1 in the figure) is generated.

As a result, the occurrence of the entrainment phenomenon (arrow F2 in FIG. 10) at the tip of the conventional nozzle N as explained in FIG. Proceed to a position further away from the discharge port.

Here, the above-mentioned upward force (arrow F1) will be explained in more detail.

As shown in the upper diagram of FIG. 11, before the mayonnaise M flowing through the first flow path 11 and the second flow path 12 merge, due to the difference in cross-sectional area, the length of the arrow in the same figure is There is a difference in flow velocity as shown in (the shorter arrow indicates a slower flow velocity and the longer arrow indicates a faster flow velocity).

Then, as shown in the lower part of the figure, mayonnaise M is discharged from the first outlet 11a of the first channel 11 and the second outlet 12a of the second channel 12, and the mayonnaise M in both channels merge. In this case, the flow rate of the upper portion of the mayonnaise M discharged from the second discharge port 12a (M2 in the figure) near the first discharge port 11a decreases due to the slow flow of the first flow path 11. On the other hand, of the rough mayonnaise M discharged from the first discharge port 11a, the flow rate of the lower portion near the second discharge port 12a (M1 in the figure) is slowed down by the fast flow of the second flow path 12. Go up.

As a result, overall, the flow velocity of mayonnaise M becomes slower toward the first discharge port 11a, and as a result, it is considered that the above-mentioned upward force F1 is generated. This is considered to be because, as described above, viscous fluids such as mayonnaise M are easily influenced by each other and easily become sticky.

In this way, by making the cross-sectional areas of the first flow path 11 and the second flow path 12 different, the above-mentioned upward force is applied when the mayonnaise M is discharged from each flow path and merges due to the difference in flow velocity between the two flow paths. It is possible to prevent the occurrence of a phenomenon in which mayonnaise M is rolled up and adhered to the vicinity of each discharge port.

[Verification test of anti-adhesion effect]
The present inventors conducted a test to verify the adhesion prevention effect of the nozzle 2 described above.

In this test, the bottle 100 was fixed at an angle of 90 degrees, and the bottle was pushed in from above and extruded (sideways out), and the state of entrainment during continuous extrusion of mayonnaise M for 10 seconds was confirmed.

In this case, the amount of mayonnaise M to be discharged was determined in the following three stages, taking into account individual differences in usage among users.
・Low speed... 1.02g/10sec (when adding a little mayonnaise)
・Medium speed... 2.79g/10sec (when applying mayonnaise normally)
・High speed... 6.90g/10sec (when applying a large amount of mayonnaise)

Furthermore, a Strograph was used as an extrusion tester, and the test was conducted under the following conditions.
・Pushing speed:
-Low speed (1.0mm/min)
-Medium speed (5.0mm/min)
-High speed (10.0mm/min)
・Pushing jig diameter: φ30mm
・Mayonnaise storage conditions: 23℃-50% (for low speed), 5℃ (for high speed)
・Test environment temperature: 23℃-50%

In addition, the cross-sectional area ratio of the first flow path 11 and the second flow path 12 (cross-sectional area ratio when each flow path is regarded as a circular pipe with an equivalent diameter)) is 1:1, 1:2, 2:1. , 1:4, and the inclination angle of the discharge port 4 of the nozzle 2 was changed to 0°, 5°, 10°, 20°, 25°, and 30°. carried out. Furthermore, as a comparative example, tests were also conducted on a conventional nozzle (not having two flow paths) by changing the inclination angle of the discharge port O to 0°, 20°, 30°, and 40°.

FIG. 12 is a diagram illustrating the difference in the discharge state of mayonnaise M depending on the three stages of pushing speed in the extrusion test.

Figure A shows the discharge state during low speed (1.02g/10sec) discharge, Figure B shows the medium speed (2.79g/10sec) discharge, and Figure C shows the high speed discharge (6.90g/10sec).

Moreover, FIG. 13 is a diagram showing the behavior of mayonnaise M during the above extrusion test from the side direction. Figure A shows Mayonnaise M stored at 23°C being dispensed at low speed (1.02g/10sec; 1.0mm/min), while Figure M shows Mayonnaise M stored at 5°C being dispensed at high speed (6.90g/10sec; 10.0mm). /min) respectively.

FIG. 14 is a diagram showing the results of the extrusion test.

As shown in the figure, the cross-sectional area ratio of the first flow path 11 and the second flow path 12 was set to 1:2 or 1:4, and the inclination angle of the discharge port 4 of the nozzle 2 was set to 0° to 25°. In Examples 1, 2, 3, 4, 5, 8, 9, and 10, both above the outlet 11a of the first channel 11 of the nozzle 2 and below the outlet 12a of the second channel 12, It was possible to suppress the occurrence of the above-mentioned entrainment phenomenon.

On the other hand, when the cross-sectional area ratio of the first flow path 11 and the second flow path 12 is set to 1:1 or 2:1 and the inclination angle of the discharge port 4 is set to 20° (Examples 6 and 7), the An entrainment phenomenon occurred below the second discharge port 12a. In addition, when the inclination angle of the discharge port 4 is 30° and the cross-sectional area ratio of the first flow path 11 and the second flow path 12 is 2:1 (Example 11), the lower side of the second discharge port 12a When the cross-sectional area ratio of both channels was set to 1:2 (Example 12), the entrainment phenomenon occurred above the first discharge port 11a. Furthermore, in a comparative example using a conventional nozzle, only when the inclination angle of the discharge port O was set to 30 degrees, good results were obtained both above and below the discharge port.

From the above results, by setting the cross-sectional area ratio of the first flow path 11 and the second flow path 12 to 1:2 or more and setting the inclination angle of the discharge port 4 to 0° to 25°, even the upper side of the nozzle 2 can be It has been demonstrated that the occurrence of the above-mentioned entrainment phenomenon can also be suppressed on the lower side.

In addition, in this embodiment, if the inclination angle of the discharge port 4 is increased to 30 degrees, which increases the cost, good results cannot be obtained even if the cross-sectional area ratio of both flow paths is different, and the conventional nozzle In No. 2, it was also confirmed that the occurrence of the above-mentioned entrainment phenomenon could not be suppressed unless the inclination angle of the discharge port O was increased to 30°, which would increase the cost.

[summary]
As explained above, according to the present embodiment, the cap 10 of the container 100 has two channels with different cross-sectional areas inside the nozzle 2, so that the plastic fluid ( When the mayonnaise (mayonnaise) merges and is discharged, a difference in flow velocity occurs, and this difference in flow velocity generates a force that causes the fast flow to be pulled by the slow flow, suppressing the force that causes the fluid to be drawn in at the tip of the nozzle. . Thereby, it is possible to prevent the plastic fluid that is the contents of the container 100 from adhering to the tip of the nozzle 2 during discharge. In addition, by simply providing two flow paths inside the nozzle 2, there is no need to design the height of the nozzle 2 (depending on the inclination angle of the discharge port 4) to be excessively large, so cost increases can be kept to a minimum. can. Furthermore, by setting the inclination angle of the discharge port 4 of the nozzle 2 to 0° to 25°, it is possible to suppress adhesion to the upper side of the nozzle 2 that occurs when discharged at low temperature and high speed.

In addition, it is considered normal for the user to open the cover cap 3 and discharge the contents with the hinge portion 7 facing up, but in that state, the first flow path 11 with the smaller cross-sectional area is on the upper side. By forming two channels so that It is possible to further prevent objects from adhering to the lower side of the nozzle 2 due to the force of being drawn into the lower side of the nozzle 2 due to gravity.

In addition, the first flow path 11 side is inclined so as to protrude more than the second flow path 12 side with respect to a plane (X plane) perpendicular to the protrusion direction (Y direction) of the nozzle 2, and the inclination angle is set to 0°. By setting the angle to ~25°, it is possible to minimize the cost increase due to the increase in unit weight due to the increase in the height of the nozzle and cover cap, while further preventing the contents from adhering to the bottom of the nozzle 2 during discharge. be able to.

[Modified example]
The present invention is not limited to the above-described embodiments, and may be modified in various ways without departing from the gist of the present invention.

In the above-described embodiment, mayonnaise is shown as the plastic fluid that is the content of the container 100, but the plastic fluid that can be the content is not limited to this, and includes, for example, ketchup, margarine, toothpaste, shampoo, conditioner, paint, etc. It may be.

In the above-described embodiment, the number of channels provided in the nozzle 2 is two (the first channel 11 and the second channel 12). However, the number of channels provided in the nozzle 2 is not limited to two, and may be three or more. In this case, for example, a plurality of partition plates 5 may be provided in parallel, or the partition plates 5 may be vertically combined so as to have a grid-like cross section. In this case, the cross-sectional area of at least two of the flow channels may be different, or the cross-sectional area of all the flow channels may be different, and the upper (closer to the hinge portion 7) The cross-sectional area of each flow path may be designed in stages so that the cross-sectional area of each flow path becomes smaller.

Further, each flow path does not need to be formed by being partitioned by a plate-like member such as the partition plate 5, and for example, a plurality of holes parallel to the discharge direction of the contents may be formed by injection molding or the like. You can.

Furthermore, in the embodiments described above, the nozzle 2 has a cylindrical shape. However, the nozzle 2 does not have to be cylindrical, and may be a rectangular tube (a square tube, a pentagonal tube, a hexagonal tube, an octagonal tube, etc.). In that case, the cross section of the nozzle may or may not be a regular polygon. In this case, the first flow path 11 and the second flow path 12 may be formed by partitioning the inside of the nozzle by at least one plate-like member such as the partition plate 5, or by forming a plurality of holes. It may be formed by Therefore, the cross sections of the first flow path 11 and the second flow path 12 in this case may be polygonal rather than half-moon shaped as shown in the above embodiment. In this case as well, the cross-sectional area ratio of the two channels is different, preferably 1:2 or more.

In the above-described embodiment, each flow path was provided in a part of the entire length of the nozzle 2 in the ejection direction, including the ejection port 4, but may be provided over the entire length of the nozzle 2 in the ejection direction.

Further, in the above embodiment, each flow path was formed by completely dividing the internal space of the nozzle 2 into two in the cross-sectional direction by the partition plate 5, but each flow path was formed by completely dividing the internal space of the nozzle 2 into two in the cross-sectional direction. There is no need for a plurality of channels, and some unpartitioned portions may exist as long as they can function as different channels. For example, a groove (slit) parallel to the discharge direction of the nozzle 2 is formed in the center portion of the partition plate 5, and the partition plate 5 is formed as two partition plates that protrude inward from the inner surface of the nozzle 2. You can.

The present inventors formed two patterns of grooves with a width of 0.5 mm and a width of 1.0 mm on the partition plate 5 in the above-described embodiment, and conducted the test shown in FIG. 9, respectively. However, the test results showed no difference from the results shown in FIG. 9 above. Therefore, even if each channel is not completely partitioned, the effect of the present invention of preventing the entrainment phenomenon described above can be obtained, and when the grooves are formed as described above, two channels having a semicircular cross section can be obtained. Since two channels can be formed with one mold having an H-shaped cross section instead of one mold, there is also the advantage that the strength of the mold can be improved.

In the above-described embodiment, the nozzle 2 is shown projecting from the cap 10 as a spouting part for the contents of the container 100, but the spouting part does not have to be formed protruding from the cap 10. That is, even if the discharge port 4 is formed in the top plate 1b of the cap 10, and the first flow path 11 and the second flow path 12 (and the partition plate 5) are formed from the discharge port 4 to the inside of the cap 10. good.

In the embodiment described above, the container 100 is separable into the container body 20 and the cap 10 having the nozzle 2. However, the opening of the container body may not be provided with a cap, and the pouring portion may be integrally formed on the end surface of the container body. In this case, the extraction part may be a nozzle or a flow path that does not protrude from the end surface of the container body but is formed inside the container body. In this case, the nozzle may or may not be provided with a cover. Even in such a container with an integrated extraction part, the same effects as in the above embodiment can be obtained by forming a plurality of channels having different cross-sectional areas inside the extraction part.

1... Cap body 1b... Top plate 2... Nozzle 3... Cover cap 4... Discharge port 5... Partition plate 6... Nozzle cover 7... Hinge portion 10... Cap 11... First channel 11a... First discharge port 12... Second Channel 12a...Second outlet 20...Container body 21...Neck 21a...Opening 100...Container M...Contents (mayonnaise)

Claims (2)

a cap body that is attached to the opening of a container containing plastic fluid;
a spouting part formed in the cap main body and having two independent flow paths with different cross-sectional areas, each of which guides, merges, and discharges the contents poured out from the opening;
a cover cap that is openably and closably connected to the cap body via a hinge part provided at an end of a surface on which the spouting part is formed of the cap body;
The two flow paths are formed by a partition plate parallel to the protrusion direction that partitions the internal space of the spouting section into two, and are provided on the hinge section side inside the spouting section and have a first cross-sectional area. and a second flow path provided inside the spouting part on the opposite side of the hinge part and having a second cross-sectional area larger than the first cross-sectional area,
When the contents are discharged, the first flow path and the second flow path are arranged such that the first flow path is on the upper side and the second flow path is on the lower side , and the content that has merged with the first flow path is on the upper side and the second flow path is on the lower side. The cap is formed to generate an upward force on the cap. a container body that can be filled with plastic fluid;
a spouting part formed on an end surface of the container body and having two independent channels having different cross-sectional areas therein for respectively guiding, merging and discharging the contents poured from the container body;
a cover cap that is openably and closably connected to the container body via a hinge provided at the end of the forming surface of the spouting part;
The two flow paths are formed by a partition plate parallel to the protrusion direction that partitions the internal space of the spouting section into two, and are provided on the hinge section side inside the spouting section and have a first cross-sectional area. and a second flow path provided inside the spouting part on the opposite side of the hinge part and having a second cross-sectional area larger than the first cross-sectional area,
When the contents are discharged, the first flow path and the second flow path are arranged such that the first flow path is on the upper side and the second flow path is on the lower side , and the content that has merged with the first flow path is on the upper side and the second flow path is on the lower side. A vessel shaped to generate an upward force on the vessel .

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