JP6950166B2 - Liquid dripping prevention cap - Google Patents

Description

The present invention is a cap used by fitting in a flexible container for storing a high-viscosity or medium-viscosity liquid, and a cap that prevents the liquid from dripping after pouring out the contents, and integrally. Regarding molded caps.

Liquid seasonings such as dressings, sauces and ketchups, edible oils such as olive oil, high-viscosity liquid foods such as honey, toiletries such as shampoos, rinses and conditioners, and medium-viscosity and high-viscosity liquids such as kitchen liquid detergents After pouring out from the container to be stored, there was a problem that the contents could not run out because the contents continued to come out from the spout as if pulling a string. If the liquid did not run out, the contents would hang around the container and become dirty, causing hygienic problems such as mold growth and easy growth of pests.

By the way, there is a method of forcibly stopping the contents to be used for dripping by providing a valve with a slit at the tip of the spout so that the liquid can easily run out.
However, if the mouthpiece portion provided with such a slit valve is provided, the cut surfaces in contact with the slits will block each other during long-term storage of the discharge container, the slits will not open during use, and the discharge container cannot be used. I was afraid.

In contrast to the above, Patent Document 1 is a content discharge container in which a slit valve is attached to the mouth cylinder portion of the container via a cap.
The slit valve has an orifice forming wall in which the outer surface is a spherical recess, a slit whose end is surrounded by reinforcing ribs is engraved in the center, and a flap is formed.
The cap is composed of a cap base to which a slit valve is attached and screwed to the container mouth tube portion, and a cover to be fitted on the cap base.
The cover has a pressing surface and a protruding portion on the lower surface thereof that engage with the peripheral edge of the orifice forming wall, and engages with the orifice forming wall when the covering is closed to increase the degree of curvature of the orifice forming wall surface. , Proposes a discharge container cap with a slit valve attached, which is characterized by opening a slit.

This cap engages with the orifice forming wall at the protruding part on the lower surface of the cover, and is stored with the slit open, so that the cut surfaces in contact with the slit are blocked even during long-term storage of the discharge container. Is prevented from occurring. However, this cap is composed of a slit valve molded from silicone rubber, elastomer, and soft synthetic resin, a cover, and a cap base, and since they are not made integrally, an assembly process is required. In addition to being expensive, there were problems such as being lost, forgetting to close it, and getting dirty.
In addition, since the materials are different, it was necessary to separate them when disposing of them.

Further, in Patent Document 2, a cap substrate, a slit valve attached to an opening of the cap substrate, which opens outward when the internal pressure is higher than the atmospheric pressure and closes by an elastic force when the internal pressure is equal to the atmospheric pressure, and a cap substrate. With a lid that opens and closes the opening of the
The lid has an inverted convex push-in portion formed on the inner surface thereof.
We propose a cap with a slit valve, which is characterized in that when the lid is closed, the push-in portion abuts only on the center side from the slit end of the slit valve and pushes the slit valve slightly inward. There is.

This cap is also composed of a cap base, a lid body, and a slit valve, and even if the cap base and the lid body are integrated with a hinge, the slit valve is a molded body molded of an elastic soft synthetic resin material. , It is composed of separate bodies. Therefore, an assembly process is required, which is expensive, and there are problems such as loss, forgetting to close, and getting dirty, and sorting problems in disposal.

Japanese Patent No. 374508 Japanese Unexamined Patent Publication No. 2016-50007

Therefore, even though it is equipped with a slit valve, by forming a cap that integrates the cap body, the slit valve, and the lid, the contents can be instantly threaded so that the contents do not drip after pouring. It is an object of the present invention to obtain a cap for stopping and preventing liquid dripping, eliminating sorting work at the time of disposal, and manufacturing at low cost.

The liquid dripping prevention cap of the present invention is a cap attached to the mouth of a flexible container, and has a liquid stop valve having a slit that can be closed instantly after pouring out the contents, a cap body, and a liquid stop valve. The hinge cap that can be opened and closed is an integral and liquid dripping prevention cap made of the same material.
The check valve consists of a plurality of check valve bodies separated by at least one slit, and the check valve bodies adjacent to the slits are arranged in a staggered manner in the height direction, and the base of the check valve body is thin. Of the plurality of liquid stop valve bodies arranged in a staggered manner in the height direction, in the liquid stop valve body arranged on the upper side, the thin portion is on the upper side of the liquid stop valve body, and on the other hand, a plurality of the liquid stop valve bodies. The liquid stop valve body arranged on the lower side of the liquid stop valve body is a liquid dripping prevention cap characterized in that the thin-walled portion is on the lower side of the liquid stop valve body.

In the liquid dripping prevention cap of the present invention, the liquid stop valve having a slit, the cap body, and the hinge cap are integrated, so that the cap is inexpensive and the cap and the liquid stop valve are not lost. I will never forget to close it.
In addition, since the liquid stop valve, the cap body, and the hinge cap are integrated and cannot be removed, the spout and the cap will not be soiled.
Furthermore, since each is made of the same material, it can be disposed of without the need for sorting.

It is a vertical cross-sectional view of the liquid dripping prevention cap of this invention, and is the enlarged perspective view of the liquid stop valve part. It is a partially enlarged sectional view in the vicinity of the liquid stop valve which shows the process of closing a hinge cap with the liquid dripping prevention cap of this invention. It is a vertical cross-sectional view of the liquid dripping prevention cap of the present invention in a state where the hinge cap is opened, and a vertical cross-sectional view in a state where the contents are poured out. It is a partially enlarged perspective view which shows the example of another embodiment of the liquid stop valve in the liquid dripping prevention cap of this invention.

Hereinafter, an example of an embodiment of the liquid dripping prevention cap of the present invention will be described in detail with reference to the drawings.
The liquid dripping prevention cap of the present invention is a cap used for a flexible container.
That is, it is used for a container in which the contents are extruded by pushing the container body with the spout facing downward.
FIG. 1-1 is a vertical cross-sectional view of the liquid dripping prevention cap of the present invention. The liquid dripping prevention cap 2 is screwed into the mouth 11 of the container body 1. Of course, it may be a plug-type fitting.
The liquid dripping prevention cap is composed of a liquid stop valve 21, a cap body 22, and a hinge cap 23, which are integrally formed.

The cap main body 22 is composed of a cap top plate 221 and a cap side wall 222 extending downward from the peripheral edge of the cap top plate 221.
The cap top plate 221 has a pouring cylinder 2211 protruding from the center of the top plate, and a liquid stop valve 21 is formed inside the pouring cylinder 2211.
In addition, the inside of the tip of the dispensing cylinder 2211 has a curved surface with a large curvature, so that even if the lid inner ring 2311 of the hinge cap is inserted in a circular motion from a slight angle, it can be smoothly inserted. It has become.
Inside the cap side wall 222, there is an internal screw 2221 that is screwed into the mouth of the dispensing container. Of course, if a fitting projection for tapping is provided instead of a screw for screwing into the mouth of the container body 1, a fitting ring for tapping or the like is provided on the cap side wall 222.
Then, it is preferable to provide a knurl 2222 on the outside of the cap side wall 222 to facilitate tightening of the screw to be screwed.
Further, it is preferable to provide an inner ring 2212 or a contact ring 2213 inside the cap top plate 221 so that the cap top plate 221 can be easily inserted into the container mouth to ensure high sealing performance.

The liquid stop valve 21 is located on the top plate of the cap body 22, is inside the dispensing cylinder 2211 protruding from the center of the top plate, and as shown in FIG. 1-2, a plurality of liquids separated by the slit 211. It is composed of a check valve body 212.
In the embodiment shown in FIG. 1-2, the liquid stop valve body 212 is composed of four sheets, and the adjacent liquid stop valve bodies 212 separated by the slit 211 substantially correspond to the thickness of the liquid stop valve body 212. There is a step in height. Therefore, the adjacent liquid check valve bodies 212 are arranged so as to be staggered.
If the root of the check valve body 212 is made thin by stealing the meat, the check valve body 212 can be easily moved by the internal pressure even if it is molded of a hard resin such as polypropylene, and can be sufficiently opened. Therefore, if a large pressure is applied, the opening will be widened accordingly, and a large amount of contents can be poured out in a short time.

The hinge cap 23 includes a lid top plate 231 and a lid side wall 232 hanging from the peripheral edge of the lid top plate.
There is a thin hinge 24 at the lower end of the lid side wall 232, which is connected to the peripheral edge of the cap top plate 221 to allow the hinge cap 23 to rotate around the hinge 24.
Further, there is an eaves 2321 on the opposite side of the hinge 24 of the lid side wall 232, which makes it easy to open the hinge cap 23.
Inside the center of the lid top plate 231 is a cylindrical lid inner ring 2311 that can be inserted into the tip of the dispensing cylinder 2211.
Further, an insertion protrusion 2312 located at the center of the lid inner ring 2311 and protruding below the tip of the lid inner ring 2311 is provided.

In this embodiment, the hinge cap 23 has a locking recess 2322 inside the lid side wall 232 on the opposite side of the hinge 24, is fitted to the locking projection 2214 of the cap body, and is fitted by the resistance of the check valve 21. , The insertion protrusion 2312 is pushed up to prevent the hinge cap 23 from coming off from the cap body 22.
In addition to the fitting of the locking recess 2322 and the locking protrusion 2214, a locking ring protrusion is provided on the outer surface side of the lid inner ring 2311, and a locking recess is provided on the inner surface side of the dispensing cylinder 2211 to fit them. It may be locked by.
Further, a new cylindrical locking protrusion ring is provided on the outside of the lid inner ring 2311, a locking recess is provided on the outer surface side of the dispensing cylinder 2211, and the locking protrusion ring is inserted into the locking recess. It may be locked.

FIG. 2 is a partially enlarged cross-sectional view of the vicinity of the liquid stop valve showing the process of closing the hinge cap in the liquid dripping prevention cap of the present invention.
FIG. 2-1 shows a state before the hinge cap 23 is completely closed, and the insertion protrusion 2312 has not yet started to push the slit 211 of the check valve body 212 open. At this point, the liquid stop valve 21 itself is closed, and the lid inner ring 2311 has already begun to be inserted into the inside of the dispensing cylinder 2211 to stop the liquid.
In this way, before the insertion protrusion 2312 reaches the liquid stop valve body 212, the lid inner ring 2311 is inserted into the dispensing cylinder 2211 to seal it, so that the insertion protrusion 2312 pushes and spreads the liquid stop valve 21. Even if the package is opened, there is no risk of the contents leaking to the outside of the cap body 22.

FIG. 2-2 shows a state in which the hinge cap 23 is completely closed and the insertion protrusion 2312 pushes the slit 211 of the check valve 21 open.
When the insertion protrusion 2312 expands the slit 211 of the check valve 21, a gap is created between the adjacent check valve bodies 212, and even if the contents are about to solidify without pouring for a long time, the adjacent liquids are formed. The problem that the valve stop body 212 and the liquid stop valve body 212 stick to each other is unlikely to occur.
Further, in this state, the lid inner ring 2311 is inserted into the inner surface of the dispensing cylinder 2211 and sealed, so that the volatile components of the contents are hard to come off.

FIG. 3-1 is a vertical cross-sectional view of the liquid dripping prevention cap of the present invention in a state where the pouring container is tilted and the hinge cap 23 is opened.
When the hinge cap 23 is opened, the insertion protrusion 2312 is separated from the liquid stop valve 21, and the liquid stop valve 21 is closed. At this point, the liquid stop valve 21 is not open, so the contents are not poured out.
The liquid check valve 21 can be opened when an internal pressure is applied and closed when the internal pressure is lowered.
However, the liquid stop valve 21 does not need to be completely closed. If the gap of the check valve is very narrow, the contents can stay inside the check valve due to surface tension. Therefore, it is possible to cut the string of the viscous content to drain the liquid.

FIG. 3-2 is a vertical cross-sectional view of the liquid dripping prevention cap of the present invention in a state where the contents are poured out.
When an internal pressure is applied to the container body 1 as shown in this figure, the liquid check valve 21 opens and the contents are poured out. However, when the internal pressure drops, the liquid stop valve 21 closes and the state shown in FIG. 3-1 is reached. Therefore, even a highly viscous liquid content that does not easily run out can easily run out and be noted. The discharge tube is not easily soiled by the contents.

FIG. 4 is a partially enlarged perspective view showing another embodiment of the liquid stop valve in the liquid dripping prevention cap of the present invention.
FIG. 4-1 is an example of an embodiment of the check valve 21 in which the check valve body 212 is composed of two sheets, and there is only one slit 211. One of the check valve bodies 212 is on the pouring side, and the other liquid check valve body 212 has a step corresponding to the thickness of the slit portion, and is arranged on the container side in a stepped manner in the height direction.
The liquid stop valve 21 is used for contents that are highly closed and difficult to stop. A thin-walled portion 2121 is provided at the base of the check valve body 212 to facilitate the movement of the check valve body 212.
The upper thin-walled portion 2121 is provided on the upper side, and the lower thin-walled portion 2121 is provided on the lower side.

FIG. 4-2 is an example of an embodiment of the check valve 21 in which the check valve body 212 is composed of six sheets, and has six slits 211. Adjacent liquid check valve bodies 212 have a step corresponding to the thickness of the slit, and one liquid stop valve body 212 is arranged closer to the pouring side and the other liquid stop valve body 212 is arranged closer to the container side. ..
Utilizing this step, the slit 211 can be formed by cutting off the mold.
Since the liquid stop valve 21 of this embodiment is easily opened and has low closing property, it is used for medium-viscosity and low-viscosity contents that are easy to stop liquid.
A thin-walled portion 2121 is also provided at the base of the check valve body 212 to facilitate the movement of the check valve body 212.

The liquid dripping prevention cap of the present invention of the present invention is a high-pressure method low-density polyethylene, linear low-density polyethylene, medium-density polyethylene, high-density polyethylene, polypropylene, ethylene / propylene random copolymer, ethylene / propylene block copolymer. , Polymethylpentene, and other olefin resins alone, or a crystalline polyolefin mixed with them, and fluororesins such as ionomer resin, polyoxymethylene, and fluoroethylene can be used. However, it is preferable to use a resin different from that of the pouring container.
The liquid dripping prevention cap can be mass-produced by a general injection molding machine using an injection molding die, so that the productivity is high.

The liquid dripping prevention cap of the present invention is as described above, and can promote liquid dripping of contents having high viscosity or viscosity such as medium viscosity and prevent liquid dripping.
Since it can be integrally injection-molded with one injection-molding mold for manufacturing, it requires almost no assembly just by closing the hinge cap after molding, and it is disassembled and separated even at the time of disposal. There is no need for trouble such as doing.
In particular, since the liquid check valve body is also integrally formed with the cap body, problems such as falling into the container do not occur, so that problems in terms of hygiene are unlikely to occur. In addition, there is no problem that the liquid stop valve falls off to the outside and is swallowed, or enters the device and causes a failure.
Further, since it can be manufactured by an ordinary injection molding machine, it has high productivity and can be mass-produced at low cost, and the merit of the present invention is high.

1 ・ ・ ・ ・ ・ ・ ・ ・ Container body 11 ・ ・ ・ ・ ・ ・ ・ Mouth 2 ・ ・ ・ ・ ・ ・ ・ ・ Liquid dripping prevention cap 21 ・ ・ ・ ・ ・ ・ ・ ・ ・ Liquid check valve 211 ・ ・ ・ ・ ・・ Slit 212 ・ ・ ・ ・ ・ ・ Liquid stop valve body 2121 ・ ・ ・ ・ ・ Thin wall part 22 ・ ・ ・ ・ ・ ・ Cap body 221 ・ ・ ・ ・ ・ ・ Cap top plate 2211 ・ ・ ・ ・ ・ Dispensing cylinder 2212 ・ ・ ・ ・ ・ Inner ring 2213 ・ ・ ・ ・ ・ Contact ring 2214 ・ ・ ・ Locking protrusion 222 ・ ・ ・ ・ ・ Cap side wall 2221 ・ ・ ・ ・ ・ Internal screw 2222 ・ ・ ・ ・ ・ Laurette 23 ································································································································································・ Closure 2322 ・ ・ ・ ・ ・ Locking recess 24 ・ ・ ・ ・ ・ ・ ・ Hinge

Claims (4)

A flexible cap that can be attached to the mouth of the container and has a slit that can be closed instantly after the contents are poured out, a cap body, and a hinge cap that can be opened and closed by covering the liquid stop valve. However, it is a liquid dripping prevention cap that is integrated and made of the same material.
The check valve consists of a plurality of check valve bodies separated by at least one slit, and the check valve bodies adjacent to the slits are arranged in a staggered manner in the height direction, and the base of the check valve body is thin. Of the plurality of liquid stop valve bodies arranged in a staggered manner in the height direction, in the liquid stop valve body arranged on the upper side, the thin portion is on the upper side of the liquid stop valve body, and on the other hand, a plurality of the liquid stop valve bodies. The liquid stop valve body arranged on the lower side of the liquid stop valve body is characterized in that the thin-walled portion is on the lower side of the liquid stop valve body . The liquid dripping prevention cap according to claim 1, wherein when the hinge cap is closed, the insertion protrusion provided inside the hinge cap is inserted into the slit of the liquid stop valve to open the slit. The liquid dripping prevention cap according to claim 1 or 2, wherein the hinge cap and the cap body are sealed at the time when the insertion protrusion is inserted into the slit of the liquid stop valve. The liquid dripping prevention cap according to claim 3, wherein the inner ring of the hinge cap is inserted into the tip of the dispensing cylinder provided in the cap body to obtain a sealing property.

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