JP6848360B2 - Sealed spout - Google Patents

Description

The present invention relates to a sealed spout for liquids used in a container for storing contents that should be prevented from leaking to the outside, such as liquid seasonings such as dressings and bleach.

Stores highly permeable liquids containing seasonings such as dressings, liquid bleaching agents such as chlorine and oxygen, pesticides such as disinfectants and herbicides, alcohol, oil, toxic substances, and harmful substances. The spout is required to be hard to leak to the outside. However, a simple sealed spout with only an inner ring is not sufficient to contain such contents.

For example, in Patent Document 1, the cap portion and the dispenser cylinder attached to the neck of the large mouth dispenser of the container body containing the liquid in order to reliably pour the liquid into the small container by turning the large container body upside down. A nozzle cap including a nozzle portion protruding outward and having an air hole for pouring a liquid from the pouring cylinder is provided in an intermediate portion of the nozzle.

However, depending on the position of the air hole, the contents of this nozzle cap may flow out from the air hole. Moreover, the problem that the contents adhering to the tip of the nozzle at the time of pouring adhere to the nozzle cap and cause the growth of bacteria cannot be wiped out.

Further, in Patent Document 2, a nozzle cap including a cap body having a top plate portion continuous with a tubular portion and an upper lid screwed to a screw portion of the cap body and having a top surface portion continuous with a skirt portion. In
A fine nozzle is erected on the top plate of the cap body, a nozzle closing member is provided on the tip of the thin nozzle via a thin-walled connecting portion, and an upper surface of the nozzle closing member is provided with a nozzle closing member. A locking part for opening is provided,
A nozzle provided with an accommodating portion provided with an engaging portion that can be fitted to the opening locking portion at an eccentric position on the outside of the inner ring provided on the inner surface of the top surface portion of the upper lid. I'm proposing a cap.

Before opening this nozzle cap, the nozzle closing member closes the nozzle tip, and there is little risk of leakage. However, once opened, the contents tend to adhere to the tip of the nozzle. In this patent document as well, the inner ring of the nozzle cap is in close contact with the tip of the nozzle or the outer periphery of the nozzle, but since the inner ring is simply applied to the end face or the outer peripheral surface, the contents adhering to the vicinity of the tip of the nozzle cannot be wiped off. The contents attached to the tip of this nozzle cap change due to oxidative deterioration, and may be mixed in at the next pouring, resulting in poor taste, etc., or the contents at the tip may adhere to the surroundings, causing fingers, etc. There was a problem such as getting dirty.

Utility Model Registration No. 3142784 Japanese Patent No. 4350439

Therefore, by pouring after opening the container, even if the contents once adhere to the vicinity of the nozzle, the contents do not stay at the tip of the nozzle cap, and the sealed spout does not cause problems such as taste deterioration and contamination by the deposits. Is an object of the present invention.

The opening cap of the present invention is
It consists of a nozzle cap that is attached to the upper part of the container body and has a pouring cylinder that protrudes outward, and an overcap that has a liquid stop mechanism that is inserted into the pouring cylinder.
The overcap consists of an overcap top plate and an overcap side wall extending downward from the periphery of the overcap top plate.
The overcap top plate has a tubular inner protrusion that hangs down from the inner surface of the center.
In a spout in which the inner protrusion is inserted into the inner surface of the ejection cylinder at the tip of the nozzle cap.
The inner protrusion has a partition plate that closes the cylinder in the center in the height direction.
The dispensing cylinder consists of a tubular dispensing cylinder side wall having an inclined surface and a tip of the dispensing cylinder having a shape that extends outward.
The inner surface of the side wall of the dispensing cylinder has a ring-shaped protrusion with a diameter smaller than the outer diameter of the partition plate.
The liquid-stopping mechanism to be inserted includes a first fitting contact portion that can be liquid-stopped by a ring-shaped protrusion provided on the inner surface of the dispensing cylinder and a tip-side fitting portion of an inner protrusion below the partition plate.
The second insertion contact portion, which is inserted by the ring-shaped protrusion and abuts on the tip side of the dispensing cylinder from the first insertion contact portion at the relative position where the liquid is stopped,
It is a sealed spout that is characterized by having an insertion contact portion that can be liquid-stopped at two locations.

The sealed spout of the present invention has an insertion contact portion that can be liquid-stopped at two locations, the first insertion contact portion and the second insertion contact portion, so that the contents adhere to the tip of the nozzle cap. Even so, when the overcap is tightened, the contents adhering to the tip (inside) of the nozzle cap can be pushed down. This action wipes the inside of the nozzle cap, purifies it, and suppresses deterioration of the taste of the contents.

It is sectional drawing of Embodiment 1 which has the inner protrusion which has the insertion contact part which can stop liquid at two places, and is the enlarged sectional view of the insertion contact part in the sealed mouth plug of this invention. It is sectional drawing which shows the process in each insertion state on the inner protrusion of the overcap of Embodiment 1 and the inner surface of the ejection cylinder of a nozzle cap in the sealed mouth plug of this invention. 3 views and a vertical cross-sectional view of the overcap of the first embodiment of the sealed spout of the present invention. It is a three-sided view and a vertical sectional view of the nozzle cap of the first embodiment of the sealed spout of the present invention. The vertical cross-sectional view of the overcap of the second embodiment in which the partition plate is provided in the height range having the outer diameter of the first insertion contact portion in the sealed spout of the present invention, and the insertion contact portion thereof. It is an enlarged sectional view. In the sealed spout of the present invention, a partition plate is provided in a height range having an outer diameter of the first insertion contact portion, and a longitudinal section in the overcap of the third embodiment that can be deformed up and down above the partition plate. It is a top view and an enlarged cross-sectional view of the insertion contact portion.

Hereinafter, an example of an embodiment of the sealed spout of the present invention will be described in detail with reference to the drawings.
The sealed spout of the present invention has an inner protrusion having an insertion contact portion capable of stopping liquid at two points, and the first embodiment thereof is shown in FIG. In the first embodiment, as shown in FIG. 1-1, the container body 3 is inserted into the container body 3, the nozzle cap 2 which is attached to the tip of the upper part of the container body and has a convex pouring cylinder 21, and the nozzle cap pouring cylinder 21. It is composed of an overcap 1 having a fitting liquid stop mechanism.

The overcap 1 includes an overcap top plate 11 and an overcap side wall 12 hanging from the periphery of the top plate, and an inner protrusion 111 having a partition plate 112 hangs down from the inner surface of the center of the top plate.

Further, in the nozzle cap 2, the nozzle cap leg portion 24 is formed so as to be connected to the nozzle cap top plate 22, the nozzle cap side wall 23 hanging from the peripheral edge of the nozzle cap top plate 22, and the lower end of the nozzle cap side wall 23. There is. A convex pouring cylinder 21 is provided at the center of the nozzle cap top plate 22.
The dispensing cylinder 21 is formed with a dispensing cylinder tip 211 that spreads outward to prevent liquid dripping and a ring-shaped protrusion 212 that projects inward at the tip.

Here, FIG. 1-1 shows that the nozzle cap leg 24 is fitted to the mouth of the container body 3 by a plugging mechanism, but of course, it may be fitted with a screw to be screwed. It doesn't matter. When screwing, it is desirable to use an inner ring, a contact ring, or the like that is inserted into the mouth of the container body 3 to form a mechanism having a sealing property.

Further, the nozzle cap side wall 23 has an external screw portion 231 screwed with the overcap 1 in FIG. 1-1 and has a mechanism for fitting, but a plugging mechanism may also be used.
When the external screw portion 231 is used, a knurl 123 is provided on the outer periphery of the overcap side wall 12.
In the plugging type fitting of the nozzle cap 2 and the container body 3, it is desirable that the shape is square or ribs or the like are provided so as not to rotate with each other.
Further, when fitting the nozzle cap 2 and the container body 3 by tapping, there is a case where the overcap 1 is set (screwed) in the nozzle cap 2 due to a problem in the manufacturing process, etc., and in that case, the overcap 1 is over. It is desirable to provide the abutting ring 115 so that the load for tapping applied to the cap 1 is firmly transmitted to the nozzle cap 2.

FIG. 1-2 is an enlarged cross-sectional view of the vicinity of the inner protrusion 111. The inner protrusion 111 has a partition plate 112 in the middle inside, the outer diameter of the top plate side fitting portion 113 above the partition plate 112 is large, and the outer diameter of the tip side fitting portion 114 below the partition plate 112 is the top. It is smaller than the outer diameter of the plate-side fitting portion 113, and has a step between the top plate-side fitting portion 113 and the tip-side fitting portion 114. Further, the partition plate 112 is made thicker than the thickness of the top plate side fitting portion 113 to have sufficient rigidity. By having rigidity, the nozzle cap's ejection tube and the centering in the fitting are ensured at the time of fitting, and even if the nozzle cap is temporarily deviated from the circular shape at the time of fitting and deformed, it is easy to return to the fitting shape. Therefore, the fitting can be surely performed.

The dispensing cylinder 21 of the nozzle cap 2 is composed of a tubular dispensing cylinder side wall 210 formed of an inclined surface having a truncated cone side surface shape and a dispensing cylinder tip 211 formed at the tip of the dispensing cylinder side wall. A ring-shaped protrusion 212 having a diameter smaller than the outer diameter of the partition plate 112 is provided on the inner surface of the center in the height direction of the side wall of the ejection cylinder.
The first insertion contact portion 213 that can be liquid-stopped is formed by the inner protrusion tip insertion portion 114 below the partition plate 112 and the ring-shaped protrusion 212 provided on the inner surface of the dispensing cylinder. At the relative position where the ring-shaped protrusion 212 is inserted and the liquid is stopped, the inner surface of the dispensing cylinder 21 on the tip side of the dispensing cylinder and the fitting portion 113 on the top plate side come into contact with each other from the first fitting contact portion 213. The second fitting contact portion 214 is formed.
When the abutting ring 115 of the overcap 1 comes into contact with the nozzle cap top plate 22, or the lower end of the overcap side wall 12 is at the upper end of the step provided at the lower end of the overcap fitting portion of the nozzle cap side wall 23. When it comes to the abutting position, it is screwed between the overcap side wall 12 and the nozzle cap side wall 23 and closed. At this time, the first insertion contact portion 213 and the second insertion contact portion 214 are provided with the insertion contact portions that can be liquid-stopped, and are inserted and contacted at the same time, so that the contact is ensured. Liquid stop can be performed.

A plurality of guide ribs 13 that come into contact with the dispensing cylinder 21 are provided inside the peripheral edge of the overcap top plate 11. It is desirable that the guide rib 13 is provided with a gap of at least 0.1 to 0.2 mm below the inner protrusion 111 and at least between the guide rib 13 and the side wall of the dispensing cylinder to ensure a fitting feeling of opening and closing. ..
When the overcap 1 or the like is fitted to the container body 3 by tapping, the guide rib 13 is brought into contact with the dispensing cylinder side wall 210 below the inner protrusion 111, so that the impact due to the fitting is not exerted downward. In this way, the sealability is ensured.
As shown in FIG. 3-4, the number of guide ribs 13 is 3 or more, preferably 6 to 8 in a circumferential shape, and is provided evenly at an equal angle to uniformly suppress deformation of the pouring cylinder from the surroundings. To do so.

FIG. 2 is a cross-sectional view showing a process in each inserted state on the inner projection 111 of the overcap 1 and the inner surface of the ejection cylinder 21 of the nozzle cap 2.
FIG. 2-1 is a diagram showing a state in which the overcap 1 once opened is fitted to the nozzle cap 2 and the insertion is started.
The dispensing cylinder tip 211 provided at the tip of the dispensing cylinder 21 is provided so as to improve the drainage of liquid and prevent the contents from adhering to the outer peripheral edge of the dispensing cylinder 21.
When the overcap 1 is put on the nozzle cap 2 and starts to be fitted, the tip insertion portion 114 of the inner protrusion 111 comes into contact with the inside of the dispensing cylinder 21, and the contents adhering to the vicinity of the inside tip of the dispensing cylinder 21 are pushed down. , It is returned to the back like wiping inside the container.

FIG. 2-2 is a vertical cross-sectional view showing a state in which the overcap 1 is further inserted as compared with FIG. 2-1.
The tip fitting portion 114 of the inner protrusion 111 has reached the ring-shaped protrusion 212 inside the dispensing cylinder 21, and the top plate side fitting portion 113 has begun to come into contact with the inside of the dispensing cylinder 21.
Here, the tip of the dispensing cylinder 21 is forcibly expanded and the inner surface is wiped again, and the ring-shaped protrusion 212 portion is also expanded so that the tip insertion portion 114 can easily get over it.
In this way, when the contents adhering to the vicinity of the inner tip of the dispensing cylinder 21 are pushed down and the overcap 1 is further lowered, the first insertion contact portion 213 and the second insertion contact portion 213 and the second insertion contact are made as shown in FIG. The two parts of the portion 214 come into contact with each other to ensure that the liquid is stopped.

FIG. 3 is a three-view view and a vertical sectional view of the overcap 1 of the first embodiment.
FIG. 3-1 is a plan view, and knurling is processed around the outer circumference to facilitate opening and closing operations. The center of the top plate 11 is raised in a dome shape, and there is an inner protrusion 111 protruding inward in the center thereof, so that the center is recessed.

FIG. 3-2 is a front view, and it can be confirmed that there is a knurl 123 around the outer periphery of the overcap side wall 12, and the center of the top plate 11 is spherically raised.

FIG. 3-3 is a bottom view. There are two threaded notches 122, and eight guide ribs 13 are evenly arranged in a circumferential shape. It is preferable to have at least three guide ribs 13 evenly, preferably 6 to 8 in a circumferential shape. The abutt ring 115 is provided all around.

FIG. 3-4 is a vertical sectional view. Inside the top plate 11, in addition to the inner protrusion 111, a guide rib 13 is provided inside the dome-shaped ridge, and a butt ring 115 is provided inside the flat portion.
Inside the overcap side wall 12, an internal threaded portion 121 of a double-threaded screw is provided, and a threaded portion notch 122 is provided near the lower end thereof.

FIG. 4 is a three-view view and a vertical sectional view of the nozzle cap 2 of the first embodiment.
FIG. 4-1 is a plan view of the nozzle cap, in which the pouring cylinder 21 is provided in the center of the overcap top plate 22. An external screw portion 231 is provided around the outer periphery of the side wall 23 of the nozzle cap hanging from the peripheral edge of the top plate, and locking ribs 232 for locking to the thread notch are provided at two locations below the screw.

FIG. 4-2 is a front view of the nozzle cap, which is formed in a convex shape so that the injection cylinder 21 projects upward from the center of the nozzle cap top plate 22. The nozzle cap side wall 23 that hangs down from the peripheral edge of the nozzle cap top plate 22 has an external screw portion 231 composed of two threads on the outer circumference, and between the lower portion of the external screw and the step portion 25 connected to the nozzle cap leg portion 24. Two locking ribs 232 are provided to lock the screw notch and prevent the screw from returning.
Around the nozzle cap leg 24, a sorting knob 243 for removing the nozzle cap from the fitted container body is provided. It is desirable that the sorting knob 243 is separated (divided) from the stepped portion 25 and has a knurled anti-slip on the outer surface.
A thin sorting knob bridge 2431 is provided on the left side of the lower end of the sorting knob 243 so that it can be easily torn. Further, a sorting band 245, which is difficult to see from the outside but can be torn by the fragile line 244, is provided at the right end on the opposite side of the sorting knob bridge 2431 so as to be connected to the sorting knob 243.

FIG. 4-3 is a bottom view of the nozzle cap 2.
The nozzle cap leg portion 24 is provided with a large fitting protrusion notch 2410 in which the fitting protrusion 241 is partially eliminated, and a sorting knob 243 and a sorting knob bridge 2431 are provided therein. A sorting band 245 having a fragile portion 244 is connected adjacent to the large fitting protrusion cutout portion 2410, and a small fitting protrusion cutout portion 2411 is provided at the tip thereof.
Therefore, the sorting knob bridge 2431 can be torn to grab the sorting knob 243, and the fragile portion 244 can be continuously torn to partially widen the non-fitted region of the fitting projection 241. If the non-fitting area of the fitting protrusion 241 is widened, the nozzle cap leg 24 of the nozzle cap is easily deformed. Therefore, the nozzle cap is pulled out from the mouth of the container body to easily separate the nozzle cap from the container body. can do.

FIG. 4-4 is a vertical cross-sectional view of the nozzle cap 2.
An inner ring 251 to be inserted into the inside of the mouth of the container body is provided inside the step portion 25 connected to the nozzle cap leg portion 24 from below the nozzle cap side wall 23. Further, inside the nozzle cap leg 24, there is a main body locking protrusion on the outer circumference of the mouth of the container main body 4 and a fitting protrusion 241 that can be locked. The inner ring 251 and the fitting protrusion 241 can lock the mouth end 41 of the container body so as to sandwich it from the inside and outside.
Further, a fragile portion 244 is provided in a part of the nozzle cap leg portion 24. The fragile portion 244 is provided along the sorting band 245 connected to the sorting knob 243. When disposing of the container, the sorting knob bridge 2431 on the periphery of the sorting knob 243 is torn, and then the fragile portion 244 is torn, a part of the fitting protrusion 241 is removed from the container body mouth, and the nozzle cap 2 is removed from the container body. It is used to make it easier to separate.

The sealed plug of FIG. 5 is a vertical cross-sectional view of the second embodiment in which the partition plate 112 is provided in a height range having an inner protrusion outer diameter of the first insertion contact portion 213, and the insertion contact portion thereof. It is an enlarged sectional view in.
In the second embodiment, as in the first embodiment, the outer diameter of the inner protrusion 111 is the inner protrusion outer diameter b of the first fitting contact portion 213 and the inner protrusion of the second fitting contact portion 214. Make it smaller than the outer diameter c. However, the position of the partition plate 112 is set to the first insertion contact portion 213.
It is provided in the height range a having the inner protrusion outer diameter b in the first fitting contact portion 213 between the second fitting contact portion 214 and the second fitting contact portion 214.

In particular, as shown in FIG. 5-2, a height range a having an outer diameter of the first fitting contact portion 213 between the first fitting contact portion 213 and the second fitting contact portion 214. On the other hand, the partition plate 112 is set so as to come in a range of 3/8 × a above and below the center of the range a.
With such a sealed spout, the outer diameter of the first insertion contact portion 213 of the inner protrusion can be stably manufactured, so that there is no risk of leakage even when an impact such as dropping is applied.

In the sealing plug of FIG. 6, a partition plate 112 is provided in a height range having an inner protrusion outer diameter of the first fitting contact portion 213, and the sealing plate 112 can be deformed up and down above the partition plate 112. It is a vertical cross-sectional view of the overcap and an enlarged cross-sectional view of the vicinity of the fitting contact portion showing the state immediately before the fitting.
In this sealed plug, the inner protrusion outer diameter c of the second fitting contact portion 214 is set with respect to the inner protrusion outer diameter b of the first fitting contact portion 213 by the second fitting contact portion 214 from the partition plate. The diameter is set to be at least twice as large as the inner protrusion wall thickness d at the first insertion contact portion 213 on the side.
That is, it is expressed by the following formula.

c> b + 2 × d
With such a sealed spout, even if the injection cylinder is an elongated nozzle cap, the sealing property of the insertion can be further improved. It can also be used as a sealing spout for storing highly permeable contents containing oil, surfactant, and the like.

The same applies to any embodiment, but it is preferable to fit a cap in the upper end recess of the overcap formed by the inner protrusion to prevent foreign matter from entering.

The materials used for the sealed spout of the present invention are linear low density polyethylene, low density polyethylene, medium density polyethylene, high density polyethylene, polypropylene, ethylene / propylene random copolymer, ethylene / propylene / Crystalline polyolefins such as propylene block copolymer, polymethylpentene, etc., or a mixture thereof, ionomer resin, polystyrene, acrylonitrile resin, acrylonitrile / styrene copolymer, acrylonitrile / butadiene / styrene copolymer, Polyoxymethylene, fluoroethylene, etc. can be used. However, it is preferable to use different resins for the overcap and the nozzle cap.
Since these overcaps and nozzle caps can be mass-produced by a general injection molding machine using an injection molding die, the productivity is also high.

The material used for the container body of the present invention is linear low density polyethylene, low density polyethylene, medium density polyethylene, high density polyethylene, polypropylene, ethylene / propylene random copolymer, ethylene / propylene block copolymer, etc. In addition to the resin alone or a crystalline polyolefin in which they are mixed, a resin generally used for a blow container such as an acrylonitrile resin, a polyethylene terephthalate resin, and a polycarbonate resin can be used. However, it is preferable to use different resins for the container body and the nozzle cap. The container body can be mass-produced by a general blow molding machine, a stretch blow molding machine, an injection blow molding machine, or the like, so that the productivity is high.

The sealed spout of the present invention is as described above, and can be a highly hermetically sealed spout. It also has a fail-safe structure, so even if an impact such as dropping is applied, leakage is unlikely to occur.
In particular, even if the contents are easily deteriorated by reacting with oxygen in the air, the contents adhering to the vicinity of the pouring cylinder are pushed into the container while being wiped at the time of closing. The structure is such that it does not easily adhere to the air, and the contents are less likely to cause problems such as taste.
Further, since it can be manufactured by ordinary injection molding, it has high productivity and can be mass-produced at low cost, and the merit of the present invention is high.

1 ・ ・ ・ ・ ・ ・ ・ ・ Overcap 11 ・ ・ ・ ・ ・ ・ ・ Overcap top plate 111 ・ ・ ・ ・ ・ ・ Inner protrusion 112 ・ ・ ・ ・ ・ ・ Partition plate 113 ・ ・ ・ ・ ・ ・ Top plate Side fitting part 114 ・ ・ ・ ・ ・ ・ Tip side fitting part 115 ・ ・ ・ ・ ・ ・ Butting ring 12 ・ ・ ・ ・ ・ ・ ・ ・ Overcap side wall 121 ・ ・ ・ ・ ・ ・ Internal screw part 122 ・ ・・ ・ ・ ・ Notch (screw notch)
123 ・ ・ ・ ・ ・ ・ Knurling 13 ・ ・ ・ ・ ・ ・ ・ Guide rib 2 ・ ・ ・ ・ ・ ・ ・ ・ Nozzle cap 21 ・ ・ ・ ・ ・ ・211 ・ ・ ・ ・ ・ ・ ・ ・ Knurled tip 212 ・ ・ ・ ・ ・ ・ Ring-shaped protrusion 213 ・ ・ ・ ・ ・ ・ 1st insertion contact part 214 ・ ・ ・ ・ ・ ・ 2nd insertion contact part 22・ ・ ・ ・ ・ ・ ・ Nozzle cap top plate 23 ・ ・ ・ ・ ・ ・ ・ Nozzle cap side wall 231 ・ ・ ・ ・ ・ ・ External screw part 232 ・ ・ ・ ・ ・ ・ Locking rib 24 ・ ・ ・ ・ ・ ・ ・Nozzle cap Leg 241 ・ ・ ・ ・ ・ ・ Fitting protrusion 2410 ・ ・ ・ ・ ・ Fitting protrusion notch 243 ・ ・ ・ ・ ・ ・ Knob for sorting 2431 ・ ・ ・ ・ ・ Knob bridge for sorting 244 ・ ・ ・・ ・ ・ Vulnerable part 245 ・ ・ ・ ・ ・ ・ Sorting band 25 ・ ・ ・ ・ ・ ・ ・ ・ ・ Step part 251 ・ ・ ・ ・ ・ ・ Inner ring 3 ・ ・ ・ ・ ・ ・ ・ ・ Container body a ・ ・ ・ ・・ ・ ・ ・ ・ ・ Height range of the inner protrusion having the outer diameter of the first fitting contact portion b ・ ・ ・ ・ ・ ・ ・ ・ The outer diameter of the inner protrusion at the first fitting contact portion c ・ ・ ・ ・ ・..... Inner protrusion outer diameter at the second fitting contact portion d ..................... Inner protrusion wall thickness at the first fitting contact portion (the first on the second fitting contact portion side of the partition plate). 1 Wall thickness at the insertion contact part)

Claims (11)

It consists of a nozzle cap that is attached to the upper part of the container body and has a pouring cylinder that protrudes outward, and an overcap that has a liquid stop mechanism that is inserted into the pouring cylinder.
The overcap consists of an overcap top plate and an overcap side wall extending downward from the periphery of the overcap top plate.
The overcap top plate has a tubular inner protrusion that hangs down from the inner surface of the center.
In a spout in which the inner protrusion is inserted into the inner surface of the ejection cylinder at the tip of the nozzle cap.
The inner protrusion has a partition plate that closes the cylinder in the center in the height direction.
The dispensing cylinder consists of a tubular dispensing cylinder side wall having an inclined surface and a tip of the dispensing cylinder having a shape that extends outward.
The inner surface of the side wall of the dispensing cylinder has a ring-shaped protrusion with a diameter smaller than the outer diameter of the partition plate.
The liquid-stopping mechanism to be inserted includes a first fitting contact portion that can be liquid-stopped by a ring-shaped protrusion provided on the inner surface of the dispensing cylinder and a tip-side fitting portion of an inner protrusion below the partition plate.
The second insertion contact portion, which is inserted by the ring-shaped protrusion and abuts on the tip side of the dispensing cylinder from the first insertion contact portion at the relative position where the liquid is stopped,
A sealed spout having a liquid-stopping insertion contact portion at two locations. The sealed spout according to claim 1, wherein the thickness of the partition plate of the inner protrusion is made thicker than the thickness of the fitting portion on the top plate side of the inner protrusion above the partition plate. The nozzle cap consists of a nozzle cap top plate and a nozzle cap side wall hanging from the periphery of the nozzle cap top plate.
It has a threaded portion that is screwed together between the inside of the side wall of the overcap and the outside of the side wall of the nozzle cap.
The seal according to claim 1 or 2, wherein the first insertion contact portion and the second insertion contact portion are brought into contact with each other at the same time at a relative position where the screw is closed and the liquid can be stopped. Mouth plug. The overcap top plate has a downward abutting ring
The position where the overcap side wall and the nozzle cap side wall are screwed together and closed is
The sealed spout according to claim 3, wherein the abutting ring of the overcap is at a position where the abutting ring of the overcap is in contact with the top plate of the nozzle cap. The nozzle cap side wall is composed of an overcap fitting portion that is screwed into the overcap side wall and a container body fitting portion that is fitted to the container body and is connected downward from the lower end of the overcap fitting portion via a step.
The position where the overcap side wall and the nozzle cap side wall are screwed together and closed is
The sealed spout according to claim 3, wherein the lower end of the side wall of the overcap is in contact with the upper end of the step provided at the lower end of the overcap fitting portion of the side wall of the nozzle cap. As for the outer diameter of the inner protrusion, the outer diameter of the first insertion contact portion is made smaller than the outer diameter of the second insertion contact portion, and the first insertion contact portion and the second insertion contact portion are provided. The sealed spout according to any one of claims 1 to 5, wherein a partition rib is provided in a height range having an outer diameter of the first fitting contact portion between the two. The outer diameter of the first fitting contact portion of the inner protrusion is 2 from the outer diameter of the second fitting contact portion to the wall thickness of the first fitting contact portion on the second fitting contact portion side of the partition plate. The sealed spout according to claim 6, wherein the diameter is twice or more smaller. 3/8 × a up and down from the center of the range a with respect to the height range a having the outer diameter of the first fitting contact portion between the first fitting contact portion and the second fitting contact portion. The sealed spout according to claim 6 or 7, wherein a partition plate is provided in the range of the above. The sealed spout according to any one of claims 1 to 8, wherein at least three guide ribs that come into contact with the outer periphery of the spout side wall in the inserted state are provided inside the overcap. The sealed spout according to any one of claims 1 to 9, wherein a fitting lid is added to the upper end of the inner protrusion at the center of the overcap top plate. The sealed spout according to any one of claims 1 to 10, wherein the partition plate has an injection gate.

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