JP2022038905A - Hinge cap - Google Patents

Abstract

To provide a hinge cap of an unplugging type that is formed with a gate suited for injecting a base-material resin to form a base-material layer and a gas-barrier resin to form an intermediate layer.SOLUTION: A hinge cap comprises a cap body A that is attached on a mouth 1 of a container body D and has a gas-barrier layer E internally layered as an intermediate layer in a base-material layer, and a top lid B that is connected to the cap body A through a hinge C. The cap body A comprises a bulkhead 5 that seals off the mouth 1 of the container body D, a spout cylinder 6 that is vertically provided to the bulkhead 5, and an unplugging portion 10 that is defined by a breakable thin-walled weakened portion 9 in the bulkhead 5 in the spout cylinder 6. The unplugging portion 10 has a columnar projection 13 provided with a gate G at a tip.SELECTED DRAWING: Figure 1

Description

The present invention relates to a hinge cap having a gas barrier property, and more particularly to a plug-type hinge cap in which a gas barrier layer is inner-layered as an intermediate layer in a base material layer of a cap body.

Conventionally, food containers for storing dressings, seasonings, etc. have been defined by a thin-walled weakened portion on the cap body attached to the mouth of the container body in order to keep the inside of the container in a sealed state until opening. A plug-out cap that opens a spout by providing a partition wall on which a plug-out portion is formed and pulling up the plug-out portion is widely used.

Further, in order to maintain the flavor of the contents, a container having an excellent gas barrier property that blocks oxygen and the like contained in the air outside the container has been proposed. (See, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-56688

In the cap described in Patent Document 1, at least the partition including the unplugging portion is the same in order to form an intermediate layer made of a gas barrier resin in the base material layer of the cap body so as to uniformly cover the container mouth portion. Although it is molded so as to be on the surface, the gas barrier resin is immediately discharged from the gate after the base resin forming the base layer of the cap body is injected into the mold with the central part of the unplugging part as the gate. It was necessary to inject at the same time as the base resin.

However, in order to inject the base resin that forms the base layer into the mold and then immediately inject the gas barrier resin from the gate at the same time as the base resin, a heater that controls the resin temperature in a small space of the mold. There was a problem that it was difficult to incorporate a sensor circuit.

An object of the present invention is to solve the above-mentioned problems, and to provide a plug-type hinge cap in which a gate suitable for injecting a base resin forming a base layer and a gas barrier resin forming an intermediate layer is formed. The purpose is to provide.

In order to solve the above problems, the present invention has a cap body as a hinge cap, which is attached to the mouth of the container body and has a gas barrier layer inner layer as an intermediate layer in the base material layer, and a hinge on the cap body. It is a hinge cap provided with a series of upper lids, and the cap body can be broken into a partition wall that closes the mouth of the container body, a dispensing cylinder erected on the partition wall, and a partition wall inside the dispensing cylinder. It is provided with an unplugging portion defined by a thin-walled weakened portion, and the unplugging portion adopts a configuration characterized by having a columnar protrusion provided with a gate at the tip.

As an embodiment of the hinge cap, the protrusion is characterized in that it is erected from the upper surface of the plug-out portion to the vicinity of the upper lid when the lid is closed, and the plug-out portion has a pull ring provided on the upper surface. Adopt a characteristic configuration.

As another embodiment of the hinge cap, the top lid comprises a top wall, a side peripheral wall suspended from the periphery of the top wall, and a sealed cylinder suspended from the lower surface of the top wall to seal the dispenser cylinder. The unplugging portion has a pull-up wall erected on the upper surface opposite the hinge, and the top wall is provided inside the sealed cylinder and has an engagement wall that engages with the pull-up wall. In addition, a configuration characterized by being provided separately on the upper lid and having an insert body for integrally connecting the top wall and the plugging portion is adopted.

By adopting the above configuration, the hinge cap of the present invention forms a gate suitable for injecting the base resin forming the base layer and the gas barrier resin forming the intermediate layer, and forms the gas barrier layer. It can be an easy structure.
In addition, when the hinge cap unplugging part is transferred to the upper lid after unplugging, the columnar protrusions erected on the unplugging part are supported by the top wall of the upper lid. Can be suppressed from being deformed.

It is a figure which shows the hinge cap of 1st Example, (a) is the side sectional view at the time of molding, (b) is the side sectional view which shows the state which attached to the container and closed the lid. It is a figure which shows the state which opened the hinge cap of 1st Example, (a) is a top view, (b) is a side sectional view. It is a figure which shows the hinge cap of 2nd Example, (a) is the side sectional view at the time of molding, (b) is the side sectional view which shows the state which attached to the container and closed the lid. It is a figure which shows the state which opened the hinge cap of 2nd Example, (a) is a top view, (b) is a side sectional view. It is a figure which shows the hinge cap of 3rd Example, (a) is the side sectional view at the time of molding, (b) is the side sectional view which shows the state which attached to the container and closed the lid. It is a figure which shows the state which opened the hinge cap of 3rd Example, (a) is a top view, (b) is a side sectional view. It is a figure which shows the hinge cap of 3rd Example, (a) is the top view of the insert body, (b) is the side partial sectional view of the insert body, (c) is the main part of FIG. 5 (b). It is an enlarged view, and (d) is an enlarged view of a main part at the start of unplugging.

Next, the hinge cap of the present invention will be described with reference to the drawings shown in the following examples.
In the following description, in FIG. 1 (b), the left direction is the "front side (opposite the hinge side)", the right direction is the "back side (hinge side)", and the upward direction is "up". , The downward direction is "down".

In FIG. 1 (b), A is a cap body attached to the container body D, and B is an upper lid that connects and opens / closes the cap body A by a hinge C.
An engaging ridge 2 is provided on the outer periphery of the mouth portion 1 of the container body D.

As shown in FIGS. 1 and 2, the cap body A is attached to the partition wall 5 that closes the mouth portion 1 of the container body D, the dispensing cylinder 6 that is erected from the upper surface of the partition wall 5, and the mouth portion 1. , The mounting portion 7 having the partition wall 5 formed inward and the outer peripheral cylinder portion 8 having a certain gap on the outer periphery of the mounting portion 7 and the upper lid B connected to the outer periphery of the upper end via the hinge C. It is composed of and.

The partition wall 5 is provided with a plugging portion 10 defined by a breakable thin-walled weakened portion 9 on the inner peripheral side of the pouring cylinder 6 in order to open the spout at the time of use, and the plugging portion 10 is on the hinge C side. A pull ring 11 is provided at the end portion via the support column 12, and a columnar protrusion 13 having a gate G at the tip thereof is erected at the center of the upper surface.
Further, on the lower surface of the partition wall 5, a squeezed portion 14 having an annular shape cut along the vicinity of the outer periphery of the dispensing cylinder 6 is formed.
In this embodiment, the throttle portion 14 is formed on the lower surface of the partition wall 5, but may be formed on the upper surface of the partition wall 5.

The mounting portion 7 is erected from the outer peripheral edge of the partition wall 5, and the outer peripheral portion engages with the inner cylinder 15 whose outer periphery is inserted into the inner peripheral circumference of the mouth portion 1 of the container body D, and the inner peripheral portion engages with the outer peripheral portion of the mouth portion 1. An outer cylinder 16 having an outer peripheral cylinder 8 connected to the lower end of the outer circumference, and an annular lid engaging portion 17 connected to the inner cylinder 15 and the upper end of the outer cylinder 16 are provided, and the upper portion of the lid engaging portion 17 is provided. Is provided with an annular bulging portion 18 projecting outward.
On the inner circumference of the outer cylinder 16, an engaging protrusion 19 that engages with the engaging ridge 2 provided on the outer periphery of the mouth 1 is provided.

The mounting portion 7 and the outer peripheral cylinder portion 8 are provided with a sorting mechanism for separating the hinge cap from the container body D and discarding it after the container is used.
As a sorting mechanism, as shown in FIG. 2, the outer circumference of the lower end portion of the outer cylinder 16 and the inner circumference of the lower end portion of the outer cylinder portion 8 are provided at positions on the front side (opposite to the hinge C) over a predetermined arc range and are indestructible. A connecting portion 21 and a plurality of breakable weakening portions 22 arranged at intervals in the arc range on the back surface side (hinge C side) other than the arc range are connected in series.

As shown in FIG. 1, a gas barrier layer E is provided as an intermediate layer in the cap main body A with respect to the base material layer of the cap main body A by co-injection molding.
As the base resin to be the base layer of the cap body A, a known resin such as a polyolefin resin such as polypropylene (PP) or polyethylene (PE) is used.

Further, as the gas barrier resin to be the gas barrier layer E, ethylene vinyl alcohol copolymer (EVOH), polyvinyl alcohol (PVA), polyvinylidene chloride (PVDC), polyamide (PA), etc. A known gas barrier resin such as MX nylon (MXD6 or the like) is used.
Of these, ethylene vinyl alcohol copolymer (EVOH) is preferable from the viewpoint of the barrier property against oxygen and the barrier property against flavor and aroma.

As shown in FIG. 1B, the gas barrier layer E needs to be provided so as to cover the entire opening of the mouth portion 1 of the container body D in order to completely block oxygen and the like.
Therefore, in this embodiment, the gas barrier layer E is provided on the entire partition wall 5 including the mounting portion 7 (inner cylinder 15, outer cylinder 16, lid engaging portion 17) of the cap body A, the thinning weakening portion 9, and the plug removal portion 10. It is provided as an intermediate layer.
The outer cylinder 16 of the cap body A may not be provided with the gas barrier layer E.

Further, in this embodiment, the gas barrier layer E is also provided in the thin-walled weakened portion 9, but in general, the breakage of the thin-walled weakened portion 9 is caused by the base resin serving as the base layer of the cap body A and the gas barrier layer. Since the gas barrier resin of E has poor adhesiveness, even if the base material layer portion of the thin-walled weakened portion 9 is broken, the gas barrier layer E is peeled off, and the gas barrier layer E is insufficiently broken and cannot be unplugged. In some cases.

In this case, the adhesiveness between the base material layer and the gas barrier layer E is improved by adding the base material resin to be the base material layer of the cap body A to the gas barrier resin and blending them to form the gas barrier layer E. , The gas barrier layer E is easily broken, and the plug can be unplugged.
Here, an example of blending the base resin to be the base layer and the gas barrier resin to be the gas barrier layer E is shown below.
<Base layer><Barrierlayer>
LLDPE (Linear Low Density Polyethylene) EVOH + LLDPE
LLDPE + EVOH EVOH
LLDPE + adhesive resin EVOH
LLDPE EVOH + adhesive resin LLDPE MXD6 + LLDPE
The blending ratio that can be unplugged differs depending on what kind of gas barrier resin is selected as the base resin of the base layer and the gas barrier resin of the gas barrier layer E.
Further, LDPE (low density polyethylene) may be used as the base resin of the base layer.

Further, when the base resin to be the base layer is added to the gas barrier resin and blended, it is known that the gas barrier performance of the gas barrier layer E deteriorates as the blending ratio of the base resin increases. Therefore, the gas barrier In order to maintain the properties, it is preferable to blend the base resin at the minimum compounding ratio that allows breakage.
Further, when it is difficult to knead the base resin and the gas barrier resin, a compatibilizer may be added as appropriate.

As shown in FIG. 2, the upper lid B is composed of a flat top wall 30, a side peripheral wall 31 hanging from the peripheral edge of the top wall 30, and a sealed cylinder 32 hanging from the inner surface of the top wall 30. There is.
A knob 33 is provided in an arc shape on the outer periphery of the lower end on the front side of the side peripheral wall 31, and the bulging portion 18 of the lid engaging portion 17 is fitted and closed near the lower end of the inner peripheral surface of the side peripheral wall 31. An annular locking groove 34 is provided to maintain the lid state.

In the sealing cylinder 32, an annular sealing portion 35 in close contact with the inner peripheral surface of the dispensing cylinder 6 is formed on the outer peripheral surface of the lower end, and the content liquid adhering to the inner surface of the upper lid B is formed in the partition wall 5 within a predetermined arc range on the back surface side. A tongue piece 36 is erected so as not to return to the spout port opened in the center and hang down around the spouting cylinder 6.
The hinge cap of this embodiment may be provided with a shrink label, a sealing member, or the like between the cap body A and the upper lid B in order to prevent unauthorized unplugging before use.

Next, the usage mode and the action and effect of this example will be described.
First, the hinge cap of this embodiment can be manufactured by co-injection molding the base layer made of the base resin of the cap body A so that the gas barrier layer E made of the gas barrier resin becomes an intermediate layer. can.

Specifically, as shown in FIG. 1A, in this embodiment, the thickness of the partition wall 5 is set to 1.5 mm, while the thickness of the partition wall 5 along the outer periphery of the dispensing cylinder 6 is set. The drawing portion 14 is provided so as to be 0.5 mm, and the base material of the cap body A is first provided from the gate G provided at the tip of the protrusion 13 erected in the central portion of the mold unplugging portion 10. When the base resin forming the layer is injected, the flow velocity of the base resin flowing from the unplugging portion 10 toward the inner cylinder 15 is suppressed because the drawing portion 14 is provided, so that the flow velocity of the base resin flowing from the middle of the partition wall 5 is suppressed. The flow of the base resin in the direction of the dispenser cylinder 6 that branches and extends upward is improved.

Next, when the gas barrier resin is injected at the same time as the base resin from the gate G after the injection of the base resin, the base resin easily flows into the injection cylinder 6, so that after the injection cylinder 6 is formed, the base resin is formed. The gas barrier resin passes under the injection cylinder 6. Therefore, the variation in the range in which the gas barrier layer E is formed is reduced, and jetting is less likely to occur on the outer peripheral surface of the inner cylinder 15.
In this embodiment, the thickness of the drawn portion 14 is 0.5 mm, but it can be set in the range of 0.4 to 0.8 mm depending on the fluidity of the base resin.

Since the hinge cap of this embodiment interferes with the unplugging work by the pull ring 11 after manufacturing, the protrusion 13 erected on the unplugging portion 10 is excised from the root, then closed and filled with the content liquid. The mounting portion 7 is applied to the mouth portion 1 of the container body D, and the mounting portion 7 is pressed from above to be plugged so as to be mounted on the container body D.

Next, when using the container to which the hinge cap of the present embodiment is attached, a finger is put on the knob 33 of the upper lid B and pulled up, and after the upper lid B is opened, a finger is put on the pull ring 11 and the support column 12 is used. The thin-walled weakened portion 9 is broken by pulling up the plug-out portion 10 through the stopper, the plug-out portion 10 is cut out and plugged out, the spout is opened, and then the container body D is tilted, and the content liquid is discharged into the pouring cylinder 6. It can be poured out by being guided to the inner peripheral surface of the.

After using the container, the hinge cap of this embodiment can be separated from the container body D, separated and discarded.
First, when the upper lid B of the hinge cap is opened, the upper lid B is grasped by a finger and pulled upward toward the front, the outer peripheral tubular portion 8 is pulled in the radial direction via the hinge C, and the weakened portion 22 is pulled from the back side. It is broken, the outer peripheral cylinder portion 8 is separated from the outer cylinder 16, and finally reaches the connecting portion 21.
Further, when the upper lid B is pulled up, only the front side of the outer cylinder 16 is pulled through the connecting portion 21, and the outer cylinder 16 and the mouth portion 1 of the container body D are disengaged, so that the container can be easily pulled. The hinge cap can be separated and discarded from the main body D.

Next, a second embodiment in which the cap body A and the upper lid B of the first embodiment are changed will be described.
Hereinafter, the same components as those in the first embodiment are designated by the same reference numerals, and only the different components are designated by different reference numerals, and the differences will be mainly described.

In FIG. 3B, Aa is a cap body attached to the container body D, and Ba is an upper lid that opens and closes by connecting the cap body Aa with a hinge C.
An engaging ridge 2 is provided on the outer periphery of the mouth portion 1 of the container body D.

As shown in FIGS. 3 and 4, the cap body Aa is attached to the partition wall 40 that closes the mouth portion 1 of the container body D, the dispensing cylinder 41 erected from the upper surface of the partition wall 40, and the mouth portion 1. , It is composed of a mounting portion 42 having a partition wall 40 formed inward.

The partition wall 40 is provided with a plugging portion 45 defined by a breakable thin-walled weakening portion 44 on the inner peripheral side of the dispensing cylinder 41 in order to open the spout at the time of use.
The unplugging portion 45 includes a bottom wall 46 connected to the partition wall 40 via a thinning weakening portion 44, and a substantially cylindrical pull-up wall 47 is erected on the upper surface of the bottom wall 46 on the front side, and a central portion thereof. A columnar protrusion 48 having a gate G at the tip thereof is erected.
Further, the pull-up wall 47 is formed with a protruding portion 47a extending to the vicinity of the thin-walled weakened portion 44 of the bottom wall 46 on the front side.
Further, on the hinge C side of the pull-up wall 47, a reinforcing rib 49 is provided from the upper portion thereof toward the upper surface of the bottom wall 46 and the protrusion 48.

In this embodiment, on the upper surface of the pull-up wall 47, a mountain-shaped locking protrusion 51 is provided above the stepped portion 50 so as to cover the pull-up wall 47.
The locking protrusion 51 has a mountain shape with a large lower portion and a smaller mountain shape toward the upper portion, and the front side has a gentler inclination than the hinge C side.
The upper surface of the locking protrusion 51 is flat in this embodiment, but may be rounded.

The mounting portion 42 has an inner cylinder 52 that is vertically suspended from the outer peripheral edge of the partition wall 40 and whose outer periphery is inserted into the inner circumference of the mouth portion 1 of the container body D, and an outer cylinder whose inner circumference engages with the outer circumference of the mouth portion 1. An annular lid engaging portion 54 connected to the inner cylinder 52 and the upper end portion of the outer cylinder 53 is provided, and an annular bulging portion 55 projecting outward is provided on the upper portion of the lid engaging portion 54. Is provided.
On the inner circumference of the outer cylinder 53, an engaging protrusion 56 that engages with the engaging protrusion 2 provided on the outer periphery of the mouth portion 1 is provided.

As shown in FIG. 4, a substantially V-shaped outer peripheral cut portion 57 is cut from above on the outer peripheral surface in the vicinity of either the left or right side of the hinge C of the outer cylinder 53, and the inner circumference of the outer peripheral cut portion 57 is cut. The slit groove 58 is recessed from above so as to extend in a predetermined range in the circumferential direction of the back surface side (hinge C side) starting from a position separated by a thin portion on the upper side.

Therefore, when the upper lid Ba of the hinge cap is pulled down through the hinge C when the container is discarded, the outer peripheral cut portion 57 becomes a vertical tear line, the slit groove 58 becomes a circumferential tear line, and the outer cylinder 53 has an outer peripheral cut. It is broken in the circumferential direction starting from the portion 57, and the engagement between the engaging protrusion 56 of the broken portion and the mouth portion 1 of the container body D is disengaged, and the hinge cap is easily pulled away from the container body D. It can be sorted and discarded.

As shown in FIGS. 3B and 4, the upper lid Ba is rotatably attached to the upper end of the outer circumference of the outer cylinder 53 of the cap body Aa via the hinge C, and is attached to the flat top wall 60. It is provided with a side peripheral wall 61 hanging from the peripheral edge of the top wall 60.
The top wall 60 has a sealing cylinder 62 and an engaging wall 63 suspended from the lower surface toward the front side inside the sealing cylinder 62, and the outer circumference of the sealing cylinder 62 is inside the pouring cylinder 41 of the cap body Aa. It is provided so as to be in close contact with the circumference.
Further, the top wall 60 has an engagement hole portion 64 that communicates with the inner peripheral surface of the engagement wall 63, but depending on the engagement method between the pull-up wall 47 and the engagement wall 63, the top wall It is not necessary to open the engaging hole portion 64 in 60.

As shown in FIG. 3B, the engaging wall 63 has an inner peripheral surface inclined in accordance with the lower outer peripheral surface of the locking protrusion 51, and the lower surface is a step on the upper surface of the pull-up wall 47 when the lid is closed. It is designed to come into contact with or approach the portion 50.
Further, a locking portion 65 is provided on the upper surface on the inner peripheral side of the engaging wall 63, and the lower surface of the engaging hole portion 64 is formed.

In this embodiment, as shown in FIG. 3B, when the lid is closed, the upper portion of the locking protrusion 51 reaches the engaging hole portion 64, and is locked by a retaining process such as melting. The upper portion of the protrusion 51 is expanded so as to fill the engaging hole portion 64, and the locking protrusion 51 is engaged by the locking portion 65 on the upper surface of the engaging wall 63.

A knob 66 is provided in an arc shape on the outer periphery of the lower end on the front side of the side peripheral wall 61, and as shown in FIG. 4B, a lid engaging portion 54 is provided near the lower end of the inner peripheral surface of the side peripheral wall 61. An annular locking groove 67 is provided in which the bulging portion 55 is fitted to maintain the closed state.

Next, the usage mode and the action and effect of this example will be described.
Similar to the first embodiment, the hinge cap of this embodiment has a protrusion 48 such that the gas barrier layer made of a gas barrier resin serves as an intermediate layer with respect to the base layer made of the base resin of the cap body Aa. It can be manufactured by co-injection molding from a gate G provided at the tip.
In this embodiment, unlike the first embodiment, the protrusion 48 does not need to be excised from the bottom wall 46.

As shown in FIG. 4, the hinge cap of the present embodiment manufactured by integral molding is obtained in an open state, and the upper lid Ba is rotated via the hinge C to close the lid as shown in FIG. 3 (b). Be in a state.
At that time, since the locking protrusion 51 at the upper part of the pull-up wall 47 is narrow at the upper side and the inclination on the front side is gentle, it easily enters the engaging wall 63, and the upper part is an engaging hole. Upon reaching the portion 64, the lower outer periphery of the locking protrusion 51 fits within the inner circumference of the engaging wall 63, and the lower surface of the engaging wall 63 abuts or approaches the stepped portion 50 of the pulling wall 47.

Further, the sealing cylinder 62 abuts on the dispensing cylinder 41 to form a sealing portion, and the lid engaging portion 54 of the cap body Aa and the locking groove 67 of the upper lid Ba are fitted to each other to form FIG. 3 (b). ) Is closed.
In this embodiment, in the closed state, the upper portion of the locking protrusion 51 is subjected to a retaining process by melting or the like, and the locking protrusion 51 is engaged with the engaging wall 63.
Next, the closed hinge cap is attached by tapping the mouth portion 1 of the container body D filled with the content liquid.

When the hinge cap of the present invention is used for the first time, the thin-walled weakened portion 44 provided on the partition wall 40 of the cap body Aa can be broken and unplugged by opening the upper lid Ba.
First, when a finger is placed on the knob 66 of the upper lid Ba and the knob 66 is lifted, the bottom wall 46 on the front side is lifted, whereby the thin-walled weakened portion 44 on the front side begins to break, and by further lifting the upper lid Ba, the thin wall weakening portion 44 on the front side begins to break. The thin-walled weakened portion 44 is broken in the direction of the hinge C, and finally the thin-walled weakened portion 44 near the hinge C is broken. On the other hand, in the cap body Aa, the trace of the plugging portion 45 removed from the partition wall 40 serves as a spout, and the content liquid in the container body D can be poured out.

In this embodiment, since the reinforcing rib 49 is provided on the hinge C side of the pull-up wall 47 toward the protrusion 48, stress is concentrated on the thin-walled weakened portion 44 on the front side, and the thin-walled weakened portion 44 breaks. It will be easy.
Further, in this embodiment, the protruding portion 47a is formed on the front side of the pull-up wall 47, so that the stress on the thin-walled weakened portion 44 on the front side is easily concentrated.

After using the content liquid, the upper lid Ba is closed again to the cap body Aa to form a sealing portion between the sealing cylinder 62 and the pouring cylinder 41 of the upper lid Ba, and the lid engaging portion 54 of the cap body Aa. And the locking groove 67 of the upper lid Ba are fitted, the inside of the hinge cap can be sealed again, and the upper lid Ba can be repeatedly opened and closed for use.

In this embodiment, in the unplugging portion 45, the protrusion 48 erected in the central portion of the bottom wall 46 is supported by the top wall 60 of the top lid Ba, so that the bottom wall 46 is opened and closed when the top lid Ba is opened and closed after unplugging. Can be suppressed from being deformed.

Next, a third embodiment in which the cap body Aa and the upper lid Ba of the second embodiment are changed will be described.
Hereinafter, the same components as those in the second embodiment are designated by the same reference numerals, and only the different components are designated by different reference numerals, and the differences will be mainly described.

In FIG. 5B, Ab is a cap body attached to the container body D, Bb is an upper lid that connects and opens and closes the cap body Ab by a hinge C, and F is an insert body separately provided on the upper lid Bb. ..
An engaging ridge 2 is provided on the outer periphery of the mouth portion 1 of the container body D.

As shown in FIGS. 5 and 6, the cap body Ab is attached to the partition wall 40 that closes the mouth portion 1 of the container body D, the dispensing cylinder 41 erected from the upper surface of the partition wall 40, and the mouth portion 1. , It is composed of a mounting portion 42 having a partition wall 40 formed inward.

The partition wall 40 is provided with a plugging portion 70 defined by a breakable thin-walled weakening portion 44 on the inner peripheral side of the dispensing cylinder 41 in order to open the spout at the time of use.
The unplugging portion 70 includes a bottom wall 71 connected to the partition wall 40 via a thinning weakening portion 44, and a substantially cylindrical pull-up wall 72 having an upper end open on the front side is erected on the upper surface of the bottom wall 71. A columnar protrusion 73 having a gate G at the tip thereof is erected in the central portion, and a holding standing wall 74 is erected along the thinning weakening portion 44 on the hinge C side.

Further, on the hinge C side of the pull-up wall 72, a reinforcing rib 75 is provided from the upper portion toward the upper surface of the bottom wall 71, and the pull-up wall 72 has an inner peripheral locking portion 76 formed on the inner circumference thereof and is in the center. A fitting column 77 is erected in the fitting column 77, and an enlarged diameter column portion 78 is formed in the lower portion of the fitting column 77.

As shown in FIGS. 5B and 6, the top lid Bb includes a flat top wall 60 and a side peripheral wall 61 hanging from the peripheral edge of the top wall 60.
The top wall 60 has a sealed cylinder 62 from the lower surface, an insertion wall 80 on the inner front side of the sealed cylinder 62, and a holding receiving wall 81 on the inner hinge C side of the sealed cylinder 62. The outer circumference of the envelope 62 is provided so as to be in close contact with the inner circumference of the ejection cylinder 41 of the cap body Ab, and the lower end surface of the insertion wall 80 comes into contact with the upper end surface of the pull-up wall 72 when the lid is closed. There is.

Further, the top wall 60 is opened with an insertion hole portion 82 communicating with the inner peripheral surface of the insertion wall 80, and the insertion hole portion 82 has an outer peripheral shape of the insert body F described later as shown in FIG. 6 (b). The first step portion 83 and the second step portion 84 whose diameters are gradually expanded from the inner peripheral surface of the insertion wall 80, and the ridge portion 85 projecting inside the second step portion 84 are provided. I have.
Further, in the holding receiving wall 81, a contact rib 86 is formed on the hinge C side of the inner circumference, and in the contact rib 86, the inner circumference of the holding receiving wall 81 engages with the outer periphery of the holding standing wall 74 of the plugging portion 70. At that time, it is provided so as to abut on the upper end of the holding standing wall 74.

As shown in FIGS. 7 (a) and 7 (b), the insert F has a disk-shaped head 90 and a cylindrical shaft tube portion 91 suspended from the center of the lower surface of the head 90. I have.
The insert F is made of a resin material that is harder than the cap body Ab and the top lid Bb, such as polyethylene terephthalate (PET), polyacetal (POM), and polypropylene (PP).
The insert F may be made of another resin material or the like as long as it is a material harder than the cap body Ab and the upper lid Bb.

The head 90 has five petal-shaped feather pieces 92 extending in the radial direction at equal intervals from the upper part of the outer circumference, and the shape and number of the feather pieces 92 can be appropriately selected.
The barrel portion 91 is provided with an outer peripheral locking portion 93 that engages with the inner peripheral locking portion 76 of the pull-up wall 72 on the outer periphery, and a tapered portion 94 is provided on the outer peripheral tip portion of the barrel portion 91. ing.
Further, the barrel portion 91 has a fitting recess 95 formed on the inner circumference thereof to be fitted with the fitting support column 77 of the pull-up wall 72, and the lower portion of the fitting recess 95 has a diameter-expanded recess 96 having an enlarged diameter. It is formed.

Next, the usage mode and the action and effect of this example will be described.
Similar to the second embodiment, the hinge cap of this embodiment has a protrusion 73 such that the gas barrier layer made of a gas barrier resin serves as an intermediate layer with respect to the base layer made of the base resin of the cap body Ab. It can be manufactured by co-injection molding from a gate G provided at the tip.
In this embodiment, the protrusion 73 does not need to be excised from the bottom wall 71 as in the second embodiment.

As shown in FIG. 6, the hinge cap of the present embodiment manufactured by integral molding is obtained in an open state, and the upper lid Bb is rotated via the hinge C to close the lid as shown in FIG. 5 (b). Become a state.
At that time, in the unplugging portion 70 of the cap body Ab, the upper end surface of the pull-up wall 72 abuts on the lower end surface of the insertion wall 80 of the top wall 60, and the tip surface of the protrusion 73 abuts on the lower surface of the top wall 60. Alternatively, the upper end of the outer peripheral edge of the holding standing wall 74 engages with the inner peripheral lower end of the holding receiving wall 81, and the upper end of the holding standing wall 74 abuts or approaches the lower end of the abutting rib 86.

Further, the sealing cylinder 62 forms a sealing portion in close contact with the dispensing cylinder 41, and the lid engaging portion 54 of the cap body Ab and the locking groove 67 of the upper lid Bb are fitted to each other to form a closed state. Will be.
As shown in FIG. 7 (c), in the present embodiment, in the closed state, the insert body F is pushed from the insertion hole portion 82 of the top wall 60 into the pull-up wall 72 of the plug-out portion 70 to form the upper lid Bb. It is attached so as to integrally connect with the unplugging portion 70.

When the insertion body F is pushed into the plug removal portion 70 from the insertion hole portion 82 of the top wall 60, the barrel portion 91 is sandwiched between the inner peripheral locking portion 76 of the pull-up wall 72 and the fitting support column 77. The mounting is completed when the tip of the barrel portion 91 comes into contact with the bottom wall 71.
At this time, in the insertion body F, the upper surface of the head 90 is substantially the same height as the upper surface of the top wall 60, the feather pieces 92 are accommodated in the second step portion 84, and the lower surface of the head 90 and the insertion hole portion 82 are provided. A gap s is formed between the first stage portion 83 and the first stage portion 83 of the above.

The hinge cap to which the insert body F is mounted is mounted on the container body D by applying the mounting portion 42 to the mouth portion 1 of the container body D filled with the content liquid and pressing the mounting portion 42 from above to tap the container body D.
Next, when the hinge cap of this embodiment is used for the first time, first, from the state shown in FIG. 5 (b), a finger is put on the knob 66 of the upper lid Bb, and the knob 66 is lifted. The fitting of the lid engaging portion 54 and the locking groove 67 of the upper lid Bb begins to come off from the front side, but the lower surface of the head 90 of the insert body F and the first step portion 83 of the insertion hole portion 82 of the upper lid Bb Since the voids s are formed between the two, the thin-walled weakened portion 44 of the unplugging portion 70 does not immediately start breaking as in the second embodiment.

As shown in FIG. 7D, when the upper lid Bb is slightly lifted, the head 90 of the insert body F is pulled below the insertion hole portion 82, and is between the lower surface of the head 90 and the first step portion 83. At the same time as the voids s formed in the insert body F disappear, the wing piece 92 projecting from the head 90 is pushed up by the ridge portion 85 of the second step portion 84 and protrudes upward.
Thereby, it can be easily confirmed that the hinge cap of the present embodiment has been opened, and unauthorized opening can be suppressed.
In this embodiment, the ridge portion 85, the wing pieces 92, and the voids s are provided as the structure for preventing unauthorized opening, but the structure for preventing unauthorized opening may be omitted.

Further, when the knob 66 is lifted, the bottom wall 71 on the front side is lifted, whereby the thin-walled weakened portion 44 on the front side begins to break, and by further lifting the upper lid Bb, the thin-walled weakened portion 44 breaks in the hinge C direction. Finally, the thin-walled weakened portion 44 near the hinge C is broken, and the unplugging portion 70 is removed from the partition wall 40 and then transferred to the upper lid Bb to be supported, while the cap body Ab is supported by the partition wall 40. The trace of the unplugging portion 70 removed from the container serves as a spout, and the content liquid in the container body D can be poured out.

After using the content liquid, the upper lid Bb is closed again to the cap body Ab to form a sealing portion between the sealing cylinder 62 and the dispensing cylinder 41 of the upper lid Bb, and the lid engaging portion 54 of the cap body Ab. And the locking groove 67 of the upper lid Bb are fitted, the inside of the hinge cap can be sealed again, and the upper lid Bb can be repeatedly opened and closed for use.

In the present embodiment, as in the second embodiment, in the unplugging portion 70, the protrusion 73 erected in the central portion of the bottom wall 71 is supported by the top wall 60 of the upper lid Bb, and further, the holding standing wall 74 By engaging the outer periphery with the inner circumference of the holding receiving wall 81 of the upper lid Bb, it is possible to suppress the deformation of the bottom wall 71 when the upper lid Bb is opened and closed after unplugging.

The hinge cap of the present invention has an intermediate layer in the base material layer of the cap body due to the formation of a gate suitable for injecting the base material resin forming the base material layer and the gas barrier resin forming the intermediate layer. Since the gas barrier layer is uniformly formed, it has a high gas barrier property and can prevent the volatilization of the active ingredient. Therefore, a container that requires a gas barrier property such as food and drink, seasonings, and cosmetics. Suitable for use.

A, Aa, Ab Cap body B, Ba, Bb Top lid C Hinge D Container body E Gas barrier layer F Insertor G Gate s Void 1 Mouth 2 Engagement ridge 5, 40 Bulk partition 6, 41 Injection tube 7, 42 mounting Part 8 Outer cylinder part 9, 44 Thin-walled weakening part 10, 45, 70 Unplugging part 11 Pull ring 12 Strut 13, 48, 73 Protrusion part 14 Squeezing part 15, 52 Inner cylinder 16, 53 Outer cylinder 17, 54 Lid engaging part 18 , 55 bulging part 19, 56 engaging protrusion 21 connecting part 22 weakening part 30, 60 top wall 31, 61 side peripheral wall 32, 62 sealing cylinder 33, 66 knob 34, 67 locking groove 35 sealing part 36 tongue piece 46 , 71 Bottom wall 47, 72 Pull-up wall 47a Protruding part 49, 75 Reinforcing rib 50 Step part 51 Locking protrusion 57 Outer peripheral notch 58 Slit groove 63 Engagement wall 64 Engagement hole 65 Locking part 74 Holding standing wall 76 Inner circumference locking part 77 Fitting support pillar 78 Expansion pillar part 80 Insertion wall 81 Holding receiving wall 82 Insertion hole part 83 First step part 84 Second step part 85 Protrusion part 86 Abutment rib 90 Head 91 Shaft tube part 92 Feather piece 93 Outer peripheral locking part 94 Tapered part 95 Fitting recess 96 Expansion recess

Claims (5)

A hinge cap having a cap body attached to the mouth of the container body and having a gas barrier layer inner layer as an intermediate layer in the base material layer, and an upper lid connected to the cap body via a hinge.
The cap body is provided with a partition wall that closes the mouth of the container body, a dispensing tube erected on the partition wall, and a plugging portion defined by a breakable thin-walled weakened portion on the partition wall in the dispensing tube.
The unplugging portion is a hinge cap characterized by having a columnar protrusion provided with a gate at the tip. The hinge cap according to claim 1, wherein the protrusion is erected from the upper surface of the unplugging portion to the vicinity of the upper lid when the lid is closed. The hinge cap according to claim 1 or 2, wherein the unplugging portion has a pull ring provided on the upper surface. The top lid comprises a top wall, a side peripheral wall suspended from the peripheral edge of the top wall, and a sealed cylinder suspended from the lower surface of the top wall to seal the pouring cylinder.
The unplugging section has a pull-up wall erected on the upper surface opposite the hinge.
The hinge cap according to claim 1 or 2, wherein the top wall is provided inside a sealed cylinder and has an engaging wall that engages with the pull-up wall. The hinge cap according to claim 1 or 2, further comprising an insert body provided separately on the upper lid and integrally connecting the top wall and the plugging portion.

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