Patent Application
20120234868
The present invention relates to a cap for a squeeze container, and in particular, relates to a cap for a squeeze container to be used as being attached to a mouth neck section of a plastic-made container body which is squeeze-deformable.
A squeeze container discharges a specific amount of content liquid from a discharge opening toward a discharge position owing to deformation of a container body by being squeezed (i.e., compressed) as a barrel section of the container body being held with a hand. In many cases, the squeeze container is used as having a cap with the discharge opening attached to the mouth neck section of the squeeze-deformable plastic-made container body in a detachably attachable manner so that content liquid can be supplemented or replaced. With such a squeeze container, content liquid is discharged by a specific amount by squeezing the container body in a state that the discharge opening is directed to a discharge position as tilting or inverting the held squeeze container after an outer cover which covers the discharge opening is removed, for example.
Further, with the squeeze container, when the squeezed state is released, liquid is sucked with a so-called back suction effect generating negative pressure at the inside of the container body of which deformation is to be cancelled. Accordingly, content liquid around the discharge opening can be drawn back to the inside of the container body.
Meanwhile, when the squeeze container is tilted or inverted with holding of the barrel section of the container body, there may be a case that leaking and dripping of content liquid occurs from the discharge opening owing to internal pressure of the container body and self-weight of the content liquid. Since such unexpected leaking and dripping of content liquid cause external soiling of the squeeze container, hand soiling in usage and the like, technologies to prevent the above have been developed variously (see Patent Literature 1, Patent Literature 2 and Patent Literature 3, for example).
Patent Literature 1: Japanese Registered Utility Model 2600057
Patent Literature 2: Japanese Patent Laid-Open 2006-219181
Patent Literature 3: Japanese Patent Laid-Open 2003-226377
According to Patent Literature 1, liquid leaked before squeezing is prevented from being stuck to the vicinity of a container body by arranging a side wall at a cap to which a discharge opening is formed at the center of a top face section as being obliquely extended toward the center side from a peripheral section of the top face section. However, since liquid is leaked over wide range of the top face section at the inside of the peripheral section, liquid stopping is worsened owing to insufficient liquid sucking with back suction. Meanwhile, according to Patent Literature 2, content liquid is not discharged unless a container body is squeezed so that occurrence of unnecessary liquid dripping can be effectively avoided by arranging liquid inflow opening at the vicinity of the discharge opening as bending a dip tube which is communicated with the discharge opening of a cap to be a U-shape. However, the U-shaped bent tube structure causes inconvenience for handling at the time of attaching and detaching of the cap. In addition, when squeezing is performed in a state that content liquid remains at the inside of the dip tube, there may be a case that liquid is splashed peripherally owing to air mixing. Meanwhile, according to Patent Literature 3, occurrence of liquid dripping is avoided as returning liquid which remains in a trap room by fixedly arranging a closed-end cylindrical trap room at a lower side of a discharge opening section and forming communication holes at a periphery wall section and a bottom section of the closed-end cylindrical body. However, since liquid cannot be discharged until liquid is accumulated to a certain level in the trap room, there may be a problem such that a discharge amount is lessened or cannot be adjusted especially at the first time. Accordingly, discharge amount stabilization, liquid dripping prevention and preferable liquid stopping are not sufficiently satisfied even in any of the above cases. Therefore, further technology development to prevent such problems has been desired.
The present invention relates to a cap for a squeeze container with which leaking and dripping of container liquid before squeezing can be effectively prevented, favorable liquid stopping with back suction can be obtained, a compact shape for easy handling during attaching and detaching of the cap can be obtained, and air mixing with content liquid can be effectively prevented as well.
The present invention provides a cap for a squeeze container to discharge content liquid from a top discharge opening with squeeze deformation of a barrel section of a container body to be used as being attached to a mouth neck section of the container body made of plastic as being squeeze-deformable.
Further, the present invention provides a cap for a squeeze container having a helical flow path at least as a part of a liquid flow path from the mouth neck section of the container body to the discharge opening.
a) and 2(b) are a perspective view and a side view of a helical tube to form a helical flow path which structures the cap for a squeeze container according to the first embodiment preferable for the present invention.
In the following, the present invention will be described with reference to the drawings based on preferable embodiments.
That is, the cap 10 for a squeeze container according to the first embodiment is a cap to discharge content liquid from the top discharge opening 13 with squeeze deformation (i.e., compression deformation) of the barrel section 12b of the container body 12 to be used as being attached to the mouth neck section 12a of the plastic-made container body 12 which is deformable when being squeezed. In the cap for a squeeze container, at least a part of a liquid flow path from the mouth neck section 12a of the container body 12 to the discharge opening 13 is formed as a helical flow path 15.
Further, in the first embodiment, the helical flow path 15 is arranged so that a bottom face section 15a thereof is formed to have declination toward the barrel section 12b of the container body 12 in an erected state of the squeeze container 11. Here, the declination includes a state that the bottom face section 15a of the helical flow path 15 is formed as being declined as a whole even a horizontal part exists at a midway thereof.
Further, in the first embodiment, the helical flow path 15 is formed by a helical tube 14 which is arranged inside the cap 10 for a squeeze container while the upper end of the helical tube 14 is communicated with the discharge opening 13 via an upper end opening 14a, and the lower end of the helical tube 14 is placed at the inside of the mouth neck section 12a of the container body 12 via a lower end opening 14b.
In the first embodiment, the container body 12 being a bottle-shaped plastic container having squeeze-deformable flexibility includes the barrel section 12b in which content liquid is accommodated and the mouth neck section 12a of which upper end is formed as an opened face and which is formed as being protruded upward from the upper end of the barrel section 12b, as illustrated in
Here, the content liquid capable of being accommodated in the container body 12 includes liquid composition to be used as being measured, such as clothing liquid detergent, fabric softener, bleach and liquid bath agent. Further, it is also possible to be used for liquid food such as food oil and seasoning.
The cap 10 for a squeeze cap being a plastic-made molded piece, for example, includes a circular top face section 10a and a peripheral wall section 10b having an annular skirt shape integrally extended downward from a peripheral part of the top face section 10a. The top face section 10a is provided with a nozzle section 19 as being protruded upward from a center part thereof. The nozzle section 19 includes a cylindrical intermediate section 19b formed as rising from the top face section 10a and a nozzle body 19a fixed to a top end part of the cylindrical intermediate section 19b. The discharge opening 13 is formed as vertically penetrating through the cylindrical intermediate section 19b and the nozzle body 19a of the nozzle section 19. Further, at the nozzle section 19, a cover body 16 capable of opening and closing the top end opening of the nozzle body 19a is swingably joined to the nozzle body 19a via a hinge section 17. Accordingly, the discharge opening 13 is hermetically closed at the time of storage of the squeeze container 11.
Further, an internal thread is formed, for example, at the inner face of an approximate half part of the annular-shirt-shaped peripheral wall section 10b. The cap 10 is attached to the mouth neck section 12a in a detachably attachable manner by fastening the internal thread to an external thread which is formed at an outer peripheral face of the mouth neck section 12a of the container body 12, for example.
In the first embodiment, the helical tube 14 which forms the helical flow path 15 as being arranged inside the cap 10 for a squeeze container is a plastic-made molded piece. As illustrated in
Further, in the first embodiment, the upper end attaching section 14a of the helical tube 14 is attached as being shoehorned into a lower end part of the cylindrical intermediate section 19b of the nozzle section 19 from the lower side, so that the helical tube 14 is arranged inside the peripheral wall section 10b of the cap 10 in a state of being hanged from the lower end part of the cylindrical intermediate section 19b. Further, with the above structure, the upper end of the helical tube 14 is communicated with the discharge opening 13 via the upper end opening 14a and the lower end opening 14b at the lower end of the helical tube 14 is opened inside the mouth neck section 12c of the container body 12. In addition, the bottom face section 15a of the helical flow path 15 being bent and extended helically with the helical tube 14 forms declination continuously tilted toward the barrel section 12b of the container body 12 from the upper end of the helical tube 14 in an erected state of the squeeze container 11.
According to the cap 10 for a squeeze container of the first embodiment having the above structure, leaking and dripping of content liquid before squeezing the squeeze container 11 can be effectively prevented and favorable liquid stopping can be obtained with back suction. In addition, air mixing with content liquid can be effectively prevented as well while having a compact shape which can be easily handled at the time of attaching and detaching of the cap 10.
That is, according to the cap 10 for a squeeze container of the first embodiment, the helical flow path 15 bending and extending at least a part of the liquid flow path from the mouth neck section 12a of the container body 12 to the discharge opening 13 is formed by the helical tube 14. When the squeeze container 11 is tilted or inverted, content liquid is discharged from the discharge opening 13 after passing through the liquid flow path bended and extended with the helical flow path 15. Accordingly, a certain amount of time is required for content liquid to pass through the bent and extended helical flow path 15 as well as smoothly discharging content liquid from the discharge opening 13 after passing through the liquid flow path. Further, the entire wall face of the helical flow path 15 is contacted with content liquid while the content liquid is discharged, that is, while the content liquid passes through the liquid flow path. Therefore, the content liquid can be held for a long time as being less likely to be replaced by air from the discharge opening 13 into the flow path. Accordingly, it is possible to effectively prevent leaking and dripping of content liquid from the discharge opening 13 owing to internal pressure of the container body 12 and self-weight of the content liquid after the discharge opening 13 is directed to a discharge position as tilting or inverting the squeeze container 11 until the barrel section 12b of the container body 12 is squeezed.
Further, in the first embodiment, since leaking and dripping of content liquid before squeezing the barrel section can be effectively prevented as described above, favorable liquid stopping of content liquid with back suction can be obtained when the squeezed state is released. Here, when volume of the part of the liquid flow path (i.e., the helical flow path 15) bent and extended with the helical tube 14 is set to be smaller than a decreased amount of volume of the barrel section 12b due to deformation of the container body 12 at the time of squeezing of the squeeze container 11, the liquid stopping with back suction can provide a more favorable liquid stopping effect.
Further, since the cap 10 for a squeeze container of the first embodiment has a compact shape as the helical tube 14 forming the helical flow path 15 is stored inside the peripheral wall section 10b, it is possible to be attached to and detached from the mouth neck section 12a of the container body 12 with the approximately same operation as a traditional cap.
Further, according to the cap 10 for a squeeze container of the first embodiment, the bottom face section 15a of the helical flow path 15 bent and extended with the helical tube 14 is formed to have declination toward the barrel section 12b of the container body 12 in an erected state of the squeeze container 11. Therefore, even when content liquid remains in the helical flow path 15, the remaining content liquid is smoothly recovered to the barrel section 12b of the container body 12 as falling owing to self-weight along the declination of the bottom face section 15a only by placing the squeeze container 11 in an erected state after usage, for example. Accordingly, since content liquid is not left in the bent and extended helical flow path 15 when the barrel section 12b is to be squeezed with holding of the container body 12 at the time of the next usage of the squeeze container 11, it is possible to effectively prevent content liquid from being splashed owing to air mixing with the content liquid.
Further, in the first embodiment, since cross-section area of the discharge opening 13 and the liquid flow path are not required to be lessened, it is possible to effectively prevent squeeze pressure from being heightened at the time when the barrel section 12b of the container body 12 is squeezed.
That is, as illustrated also in
According to the cap 20 for a squeeze container of the second embodiment as well, the helical flow path 15 bent and extended with the helical blade 21 is formed at at least a part of the liquid flow path from the mouth neck section 12a of the container body 12 to the discharge opening 13′ and the bottom face section 15a of the helical flow path 15 with the helical blade 21 is formed to have declination in an erected state of the squeeze container 11. Therefore, similar operational effects to the cap 10 for a squeeze container of the first embodiment can be obtained.
Here, not limited to the above embodiments, the present invention may be modified variously. For example, not limited to the helical tube and the helical blade which are described above, another member may be utilized variously as the member for forming a helical flow path to be arranged at least at a part of a liquid flow path from a mouth neck section of a container body to a discharge opening. For example, it is possible to utilize an attaching plate and the like having a helical groove on an upper face thereof capable of being fitted toward the inside of a top face section of a cap.
According to the cap for a squeeze container of the present invention, leaking and dripping of content liquid before squeezing the squeeze container can be effectively prevented and favorable liquid stopping can be obtained with back suction. In addition, air mixing with content liquid can be effectively prevented as well while having a compact shape which can be easily handled at the time of attaching and detaching of the cap.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2009-235593 | Oct 2009 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP2010/067737 | 10/8/2010 | WO | 00 | 5/25/2012 |
