JP2015160649A - Extraction cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extraction cap capable of efficiently guiding a content fluid adhering to the dome-like inner face center of a top cover to the periphery, preventing the content fluid from accumulating in the dome-like inner face center, and keeping the periphery of the container clean.SOLUTION: An extraction cap comprises a cap body A to be attached to a mouth part of a container, and a top cover B. The cap body A comprises a partition wall 13 for blocking the mouth opening of the container, and an extraction cylinder 12 erected around an extraction hole which penetrates the division wall 13. The top cover B comprises a top wall 20, a side peripheral wall 21 provided vertically from the outer edge of the top wall 20, and a hermetic ring 22 provided vertically from the inner face of the top wall 20 and engaged with the inner periphery of the extraction cylinder when closing the cover. A portion of the inner face of the top wall 20, which is inward from the hermetic ring 22, is formed in a dome shape, and one longitudinal rib 23 extending from the vicinity of the center toward the upper side of the hermetic ring 22 is formed in the inner face of the top wall 20.

Description

  The present invention relates to a pouring cap composed of a cap body attached to the mouth of a container and an upper lid, and in particular, to prevent the content liquid from adhering to the dome-shaped inner surface of the upper lid from remaining in the center. It relates to the extraction cap.

2. Description of the Related Art Conventionally, as a content liquid, a container in which a content cap that is separated into a plurality of components at the time of standing such as dressing or dripping is filled with a dispensing cap that can be opened and closed by an upper lid is known.
As an example of the content liquid to be separated into a plurality of components, the dressing includes oil components such as salad oil, fine solid components such as spices, seasonings composed of moisture such as vinegar and the like separated from the oil components, and the like. The solid component is precipitated, and the oil component and moisture are separated and exist in the container.
Therefore, in use, it is necessary to shake the container up and down with the top lid closed, and to stir and mix the internal oil component, solid component, moisture and the like.
However, in this case, there is a problem that the stirred content liquid remains attached to the inner surface of the upper lid, and when the lid is opened, the content liquid attached to the inner surface of the upper lid may drip and contaminate the outer surface and the periphery of the container. there were.

  In order to prevent such liquid dripping when the upper lid is opened, a plurality of liquid stoppers are provided on the inner surface of the lid body that fits into the dispensing cylinder of the cap body and protrudes at intervals that allow the content liquid to adhere and be held. What provided the piece is known conventionally (for example, refer patent document 1).

JP 2001-106251 A

However, the content liquid held between the plurality of liquid retaining pieces described in Patent Document 1 falls due to an impact when the lid is closed, or the tip of the liquid retaining piece is a part of a cap body such as a dispensing cylinder. In the case of a liquid having a large surface tension or viscosity, it was not collected in the container while remaining in the gap between the liquid retaining pieces, and it was unsanitary and not visually appealing.
In addition, when the upper lid has a dome-shaped inner surface, among the content liquid attached to the dome-shaped inner surface, the content liquid attached to the peripheral part flows down due to the inclination, but the content liquid attached near the center is inclined. There was a problem that it did not flow down because it was loose, and remained as it was.

  An object of the present invention is to solve the above-mentioned problem, and efficiently guide the content liquid adhering to the center of the dome-shaped inner surface of the upper lid to the surroundings, prevent the liquid from collecting on the center of the dome-shaped inner surface, and keep the container periphery clean. The purpose is to provide a pouring cap that can be used.

  In order to solve the above-mentioned problem, the present invention provides a pouring cap comprising a cap main body mounted on the mouth of a container and an upper lid as the pouring cap, and the cap main body seals the mouth opening of the container. A top wall, a side wall suspended from the outer edge of the top wall, and an inner surface of the top wall. And a sealing ring whose outer periphery engages with the inner periphery of the dispensing cylinder when the lid is closed, and the inner surface of the top wall is formed in a dome shape inward from the sealing ring, and from the vicinity of the center toward the upper side of the sealing ring A configuration characterized by forming one extending vertical rib is adopted.

As a specific embodiment of the upper lid, the vertical rib adopts a configuration characterized in that its cross section is formed in an edge shape.
As an embodiment of the dispensing cap, the upper lid is a hinge cap that is connected to the cap body via a hinge, and the vertical rib is opposite to the hinge on the inner surface of the top wall. The structure characterized by forming in the side is employ | adopted, and the structure characterized by extending a tongue piece in the hinge side of a sealing ring lower end part is employ | adopted.

  As another embodiment of the dispensing cap, the upper lid is a screw-type cap in which a female screw that is screwed into a male screw formed on the outer periphery of the cap body is formed on the inner periphery.

  In the pouring cap of the present invention, the inner surface of the top wall of the upper lid is formed in a dome shape inward from the sealing ring, and a single vertical rib extending from the vicinity of the center toward the upper side of the sealing ring. When stirring the contents up and down to stir the contents liquid, even if the contents liquid adheres to the inner surface of the top wall of the top lid, the contents liquid immediately flows down at the longitudinal ribs and collects at the center of the inner surface of the top wall. Can be prevented.

  Moreover, when the pouring cap of the present invention is a hinge cap in which the cap body and the upper lid are connected by a hinge, the vertical rib is attached to the inner surface of the top wall by forming it on the side opposite to the hinge of the inner surface of the top wall. Since the content liquid flows from the side opposite to the hinge to the hinge side, it can be prevented from splashing outside when the upper lid is opened.

  Furthermore, by extending the tongue piece on the hinge side of the lower end of the sealing ring, even if the content liquid remains on the hinge side of the top wall inner surface, it can be returned to the container along the inner surface of the tongue piece.

It is a sectional side view which shows the cover state of the hinge cap which is an Example of this invention. It is a figure which shows the open state of the hinge cap which is an Example of this invention, (a) is a top view, (b) is a sectional side view. It is side sectional drawing which shows the state which opened the upper cover 70 degree | times after unplugging the hinge cap which is an Example of this invention. (A) is the side cross-section enlarged view of the upper cover principal part of FIG. 1, (b) is the YY cross-section enlarged view of Fig.4 (a). It is a figure which shows the upper cover of the hinge cap which is an Example of this invention, (a) is front sectional drawing, (b) is a bottom perspective view. It is a top view of the upper cover which shows a mode that the content liquid adhering to the inner surface of an upper cover flows down. It is a sectional side view which shows the upper cover of the comparative example used for the comparative experiment, (a) is an upper cover with a dome shape and no vertical rib, and (b) is an upper cover with a flat inner surface. It is a sectional side view which shows the closed state of the screw type cap which is another Example of this invention.

  Next, the pouring cap of the present invention will be described with reference to the drawings shown in the embodiments.

  In this embodiment, the pouring cap is embodied as a hinge cap. In FIGS. 1 to 3, A is a cap body to be attached to the mouth portion 1 of the container, and B is integrated with the cap body A via a hinge C. It is a molded upper lid.

The container has a mouth portion 1 at the upper end, and a fitting protrusion 2 is formed on the outer peripheral surface of the mouth portion 1.
The cap main body A includes a mounting portion 3 and a dispensing portion 4 that is connected to the mounting portion 3 and that dispenses the content liquid in the container.
The mounting portion 3 includes an annular base wall 7 provided with a lid locking portion 6 provided with locking protrusions 6 a on the peripheral edge, an inner cylinder 8 extending vertically from the inner peripheral edge of the base wall 7, and a base wall 7. And an outer cylinder 9 suspended from the outer peripheral edge.
An engaging ridge 10 that engages with the fitting ridge 2 of the mouth 1 of the container is formed at the lower end of the inner peripheral surface of the outer cylinder 9.

The pouring part 4 is composed of a pouring tube 12 standing from the inner edge of the upper wall 11 and a partition wall 13 provided continuously at the lower inner periphery of the pouring tube 12.
In order to make it easy to pour the content liquid, the dispensing cylinder 12 is formed with a lower hinge C side and a higher side opposite the hinge C in the present embodiment, and its distal end portion 12a extends in a trumpet shape.
The partition wall 13 is provided with a removal portion 15 that opens the extraction hole D by a thin breakable weakened portion 14 formed in the vicinity of the inner periphery 12b of the extraction cylinder 12, and on the hinge C side of the removal portion 15 The pull ring 17 is continuously provided via the support column 16, and a buffer portion 18 is formed on the lower portion of the pull ring 17 on the side opposite to the hinge C in order to soften the contact pressure to the fingertip.
In the present embodiment, the partition wall 13 is used to seal the inside of the container until the thin weakened portion 14 is broken and opened. However, the partition wall 13 having the extraction hole D previously opened may be used.

The upper lid B includes a top wall 20, a side peripheral wall 21 that hangs down from the periphery of the top wall 20, and a cylindrical sealing ring 22 that hangs down from the inner surface of the top wall 20.
In the present embodiment, in order to promote the flow of the content liquid adhering to the inner surface of the upper lid B, the top wall 20 has an inner surface 20a on the inner peripheral side of the sealing ring 22 that has a dome shape, and the center portion is the highest and faces the periphery. The seal ring 22 is continuously provided while gradually decreasing the height.

As shown in FIGS. 4 and 5, the dome-shaped inner surface 20 a of the top wall 20 is directed from the vicinity of the center in the radial direction toward the upper part of the inner periphery of the sealing ring 22 on the side opposite to the hinge C (on the knob portion 26 described later). A single vertical rib 23 is formed.
As shown in FIG. 4 (b), the vertical rib 23 has a sharp Y-shaped cross-section with a radius R toward the dome-shaped inner surface 20a with the edge portion 23a as a boundary. There is no. The vertical rib 23 is formed such that the height of the edge portion 23a from the dome-shaped inner surface 20a is highest near the middle of the vertical rib 23, and gradually decreases toward both ends.

  Further, the angle θ formed between the tangent to the edge 23a of the vertical rib 23 and the perpendicular E from the center of the dome-shaped inner surface 20a is formed so as to decrease as the distance from the center increases.

At the lower end portion 22a of the sealing ring 22, a plate-like tongue piece 24 formed so as to protrude from both sides toward the center on the hinge C side is extended toward the inside of the extraction tube 12.
In the present embodiment, as shown in FIG. 1, the tongue piece 24 has a height at which the tip 24a approaches the upper surface of the partition wall 13 of the cap body A when the lid is closed, and the outer surface 24b of the tongue piece 24 is injected. It is formed thinner than the lower end 22 a of the sealing ring 22 so as not to contact the inner periphery 12 b of the outlet cylinder 12.

  The tongue piece 24 may have any shape as long as it can guide the content liquid adhering to the inner surface of the sealing ring 22 to the inside of the pouring hole D. For example, the tongue piece 24 has a semi-elliptical shape protruding downward. Or a triangular shape or the like.

On the inner periphery of the lower end portion of the side peripheral wall 21, an annular locking recess 25 is formed in which an engaging protrusion is provided below the engaging protrusion 6 a of the lid locking portion 6 of the cap body A.
One of the outer peripheral edges of the lower end of the side peripheral wall 21 is connected to the hinge C, and a collar-shaped knob 26 is formed on the outer periphery of the lower end opposite to the hinge C, as shown in FIG. In the embodiment, the side peripheral wall 21 has a thin-walled portion 21 a in the vicinity where the knob portion 26 is provided, and the knob portion 26 is formed with a recess 26 a on the upper surface in the vicinity of the lower end portion of the side peripheral wall 21.

Next, usage modes and operational effects of this embodiment will be described.
As shown in FIG. 2B, the hinge cap of this embodiment is manufactured by integral molding with the lid fully opened.
In order to attach the hinge cap of the present embodiment to the container, first, the upper lid B is rotated around the hinge C to close the lid, and is plugged into the mouth portion 1 of the container filled with the content liquid.
The plugging step is performed by applying a pressing force from above the upper lid B by applying the mouth 1 of the container to the annular groove formed between the inner cylinder 8 and the outer cylinder 9 of the mounting portion 3. The engagement ridge 10 is fitted over the fitting ridge 2 of the mouth 1, and the mouth 1 of the container is sandwiched between the outer periphery of the inner cylinder 8, the inner periphery of the outer cylinder 9, and the base wall 7. Wear it.
In the present embodiment, the mounting portion 3 holds the mouth 1 of the container by the outer periphery of the inner cylinder 8, the inner periphery of the outer cylinder 9, and the base wall 7. A screw may be formed by forming a male screw on the outer periphery and forming a female screw on the inner periphery of the outer cylinder 9.

To open the hinge cap of this embodiment, when the knob 26 of the upper lid B is lifted from the state shown in FIG. 1, the thin-walled portion 21 a of the side peripheral wall 21 is thinner than the other walls of the side peripheral wall 21. Therefore, the thin-walled portion 21a is deformed from the knob portion 26 side, and a portion of the side peripheral wall 21 near the knob portion 26 is lifted.
When the portion of the side peripheral wall 21 near the knob portion 26 is lifted, the locking recess 25 near the knob portion 26 of the side peripheral wall 21 and the locking protrusion 6a of the lid locking portion 6 are unlocked.
Further, when the upper lid B rotates around the hinge C and lifts the knob 26 side, the other part of the side peripheral wall 21 is deformed from the vicinity of the knob 26, and the inner periphery of the locking recess 25 and the lid locking portion 6. All the fitting with the outer periphery is released, and the upper lid B is opened.

Next, when opening the pouring hole D of the partition wall 13 of the cap body A, the pulling ring 17 of the partition wall 13 of the cap body A is pulled up with a finger or the like, and the weakened section 14 is hinged C. Break from the side.
Finally, the removal portion 15 of the partition wall 13 is unplugged, and as shown in FIG.
After the pouring hole D is opened in the partition wall 13, the hinge C is used as a fulcrum and the upper lid B is rotated to close the lid, and the sealing ring of the upper lid B is placed on the inner periphery 12 b of the pouring cylinder 12 of the cap body A. The outer periphery of 22 is in close contact, and the inside can be sealed from the dispensing tube 12.

In using the container, in order to mix the separated content liquid in the container, it is necessary to shake the container up and down with the upper lid B closed and stir.
When shaking and stirring, the content liquid adheres to the dome-shaped inner surface 20a of the upper lid B, but in order to compare the amount of adhesion after the shake, change the type of content liquid for each inner surface shape of the upper lid B, A comparative experiment was conducted and the results are shown in Tables 1-3.
Table 1 shows the results of an experiment conducted with the cap body A of the present example covered with the upper lid B of the present example (provided with one vertical rib on the dome-shaped inner surface).
Note that the dimensions of the upper lid B used in the experiment are the same as those of the upper lid shown in FIG. 7A, and the materials are all LLDPE (linear low density polyethylene) resin in the upper lids of Tables 2 and 3 below. .

  Table 2 shows the results of experiments conducted on the cap main body A of the present embodiment with a top cover having a size shown in FIG. 7A (not provided with a vertical rib on the dome-shaped inner surface).

  Table 3 shows the results of an experiment conducted with the cap main body A of the present example covered with an upper lid (a shape having a flat inner surface) shown in FIG. 7B.

In the comparison experiment, four types of commercially available dressings were used as the contents liquids, and in Tables 1 to 3, “lettuce” was expressed as a soy sauce dressing for lettuce (viscosity: 66 mPa · s), also “cucumber”. The cucumber dressing (viscosity: 103 mPa · s), the same “tomato” is the Italian dressing for tomato (viscosity: 233 mPa · s), and the “sesame” is also the roasting It is a sesame dressing (viscosity: 320 mPa · s), a so-called emulsified liquid dressing (viscosity 30 Pa · s or less), which is a dressing in which oil and water are mixed.
In addition, the viscosity measurement of the said content liquid uses Tokyo Keiki B-type viscometer (No. 2 rotor use, rotational speed 60rpm, 20 seconds later, room temperature), solid solution (sesame seeds, onion, basil, etc.) ) In a dispersed state.

The experiment method is common to experiments using three types of upper lids shown in Tables 1 to 3, and was performed as follows.
(1) Weigh the upper lid before shaking (unit: grams).
(2) After shaking, weigh the upper lid to which the inner solution has adhered for 3 seconds.
(3) The measurement of (2) is repeated three times, and the average value of the weight of the upper lid to which the inner solution is adhered is obtained.
(4) The adhesion weight of the inner solution is obtained by subtracting the weight of the upper lid measured in (1) from the average value obtained in (3).

From the results of the above comparative experiments, it can be seen that the adhesion amount of the upper lid B of the present embodiment shown in Table 1 is the smallest for any of the four types of dressings.
Further, comparing the adhesion amounts in Table 1 and Table 2 with a focus on the type of dressing, in “tomato” and “sesame” having relatively high viscosities, the adhesion amount increases if the vertical ribs 23 are not provided. It can be seen that the amount of adhesion drastically decreases to 1/3 or less.

Next, in the present embodiment, the content liquid (for example, “tomato” and “sesame” having a relatively high viscosity) adhering to the dome-shaped inner surface 20a of the upper lid B is How to flow will be described below.
When the internal solution adhering to the dome-shaped inner surface 20a of the upper lid B is schematically shown using FIG. 6, the content liquid L adhering to the entire dome-shaped inner surface 20a of the upper lid B is ( While being separated on both sides with the vertical rib 23 as a boundary as shown in (b), it is driven to the hinge C side as shown in (c), and finally remains slightly attached near the hinge C as shown in (d).
On the other hand, when the vertical ribs 23 are not provided on the dome-shaped inner surface 20a of the upper lid B (experimental results in Table 2), if the content liquid adheres to the dome-shaped inner surface 20a of the upper lid B, the vicinity of the center portion is inclined. Since it is loose, it tends to accumulate due to surface tension and does not flow down as it is.
Further, even when two or more vertical ribs 23 are provided on the dome-shaped inner surface 20a of the upper lid B, the content liquid is collected between the vertical ribs 23, and the content liquid is placed on the hinge C side as in this embodiment. Can't collect.
From the above, the content liquid adhering to the dome-shaped inner surface 20a of the upper lid B tends to accumulate near the center without the vertical rib 23. However, if only one vertical rib 23 is provided, the surface tension is increased. The edge portion 23a of the longitudinal rib 23 breaks the content liquid to be attracted, and the balance is lost. As shown in FIG. 6, the portion where the content liquid is separated will be rounded on the hinge C side due to surface tension. It is thought that it gathers as.

In the comparative experiment of this time, in the “tomato” and “sesame” dressings having relatively high viscosities, the flow shown in FIG. 6 can be visually confirmed, and in the “sesame” dressing having a viscosity of 300 mPa · s or more, a remarkable effect is obtained. Was recognized.
From this experimental result, it was found that, in particular, in the case of a content liquid having a viscosity of 200 mPa · s or more, the effect of providing only one longitudinal rib was obtained, and further, a viscosity of 300 mPa · s or more was more preferable.

Furthermore, after the container is shaken to stir the content liquid, the upper lid B is opened and the container is tilted to the opposite side of the hinge C, so that the content liquid in the container passes through the tip 12 a of the dispensing cylinder 12. Can be dispensed.
As shown in FIG. 3, when the upper lid B is opened, the content liquid remaining on the hinge C side of the dome-shaped inner surface 20 a travels along the inner surface 24 c of the sealing ring 22 and the inner surface 24 c of the tongue piece 24. Since the liquid is guided to the inside of the pouring hole D, the content liquid flowing down the tongue piece 24 can be collected in the pouring hole D without adhering to the inner periphery 12 b of the pouring cylinder 12.

In the first embodiment, the dispensing cap is embodied as a hinge cap, but can be embodied as a screw-type cap as in the following embodiments.
In FIG. 8, F is a cap body to be attached to the mouth portion 31 of the container, and G is an upper lid for covering the cap body F.

The cap main body F includes a mounting portion 33 and a pouring portion 34 that is connected to the mounting portion 33 and pours the content liquid in the container.
The pouring part 34 includes a pouring cylinder 42 erected from the inner edge of the upper wall 41, and a partition wall 43 provided continuously to the lower inner periphery of the pouring cylinder 42.
Unlike the first embodiment, the tip 42a has the same height over the entire circumference.
The upper wall 41 has a lower end that rises in a cylindrical shape from the inner peripheral edge of the base wall 37 and is formed in an annular shape with the upper end facing inward, and a male screw 36 is formed on the outer peripheral surface thereof.

The upper lid G includes a top wall 50, a side peripheral wall 51 that hangs down from the periphery of the top wall 50, and a cylindrical sealing ring 52 that hangs down from the inner surface of the top wall 50.
The side peripheral wall 51 has a female screw 55 formed on the inner peripheral surface thereof, and is screwed with a male screw formed on the outer peripheral surface of the upper wall 41 of the cap body F.

As in the first embodiment, the inner surface 50a on the inner circumferential side of the top wall 50 forms a dome shape, and the top wall 50 is continuous with the sealing ring 52 while the height near the center is highest and the height gradually decreases toward the peripheral edge. doing.
On the dome-shaped inner surface 50a of the top wall 50, a single vertical rib 53 is formed in the radial direction from the vicinity of the center toward the upper part of the inner periphery of the sealing ring 52, as in the first embodiment.

Next, usage modes and operational effects of this embodiment will be described.
Similar to the first embodiment, the screw cap of this embodiment can be attached to the container and can be unplugged in use.
Thereafter, in order to mix the separated content liquid in the container, when the container is shaken up and down with the upper lid G closed, the content liquid adheres to the dome-shaped inner surface 50a of the upper lid G, but the vertical rib 53 Due to the presence of the liquid, the adhered content liquid loses its balance of surface tension and flows from the side of the vertical rib 53 to the side opposite to the vertical rib 53.
Thereby, even if the container is shaken to stir the content liquid, the content liquid can be prevented from remaining in the central portion of the dome-shaped inner surface 50a of the upper lid G.

  The pouring cap of the present invention can be applied not only to a hinge cap but also to a screw-type cap. Even when the container is shaken and stirred when the lid is closed, the inner surface of the top wall is located inside the dome inside the sealing ring. And forming a single vertical rib extending from the vicinity of the center toward the upper side of the sealing ring, the content liquid adhering to the inner surface of the top wall of the upper lid is separated on the vertical rib and gathered on the opposite side, Since it can be prevented from remaining in the center of the inner surface of the top wall, it can be widely used as a pouring cap for edible liquid containers that require a sanitary use environment. It is suitable as a pouring cap for containers filled with liquid that needs to be shaken and stirred during use.

A, F Cap body B, G Top lid C Hinge D Outlet E Vertical L Contents Liquid 1, 31 Portion 2 Fitting protrusion 3, 33 Mounting part 4, 34 Outlet part 6 Lid locking part 6a Locking protrusion Strips 7, 37 Base wall 8 Inner tube 9 Outer tube 10 Engaging projections 11, 41 Upper wall 12, 42 Outlet tube 12a, 42a Tip 12b Inner circumference 13, 43 Partition 14 Weaker 15 Remover 16 Strut 17 Pull ring 18 Buffer portion 20, 50 Top wall 20a, 50a Domed inner surface 21, 51 Side peripheral wall 21a Thin wall portion 22, 52 Seal ring 22a Lower end portion 23, 53 Vertical rib 23a Edge portion 24 Tongue piece 24a Tip 24b Outer surface 24c Inner surface 25 Locking recessed part 26 Knob part 26a Recessed part 36 Male screw 55 Female screw

Claims (6)

A pouring cap consisting of a cap body to be attached to the mouth of the container and an upper lid,
The cap body includes a partition that seals the mouth opening of the container, and a dispensing cylinder that stands up around a dispensing hole that penetrates the partition,
The upper lid includes a top wall, a side peripheral wall that is suspended from the outer edge of the top wall, and a sealing ring that is suspended from the inner surface of the top wall and whose outer periphery engages with the inner periphery of the extraction cylinder when closed.
The pouring cap, wherein the inner surface of the top wall is formed in a dome shape inward from the sealing ring, and a single vertical rib extending from the vicinity of the center toward the upper side of the sealing ring.   2. The pouring cap according to claim 1, wherein the longitudinal rib is formed in an edge shape in the cross section.   The pouring cap according to claim 1, wherein the upper lid is a hinge cap that is connected to the cap body via a hinge.   4. The pouring cap according to claim 3, wherein the vertical rib is formed on the side opposite to the hinge on the inner surface of the top wall.   The pouring cap according to claim 3 or 4, wherein a tongue piece is extended on the hinge side of the lower end portion of the sealing ring.   3. The pouring cap according to claim 1, wherein the upper lid is a screw-type cap that forms a female screw threadedly engaged with a male screw formed on the outer periphery of the cap body on the inner circumference.

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