JP6476699B2 - Container for dispensing - Google Patents

Description

  The present invention is a dispensing container for storing contents to be prevented from oxidative deterioration such as soy sauce, mayonnaise, sauce, coffee, juice, etc., which can handle contents of low viscosity to high viscosity, and squeezed contents It relates to containers for dispensing items.

Contents that are prone to oxidative degradation such as soy sauce, mayonnaise, coffee, juice, etc., have been distributed in containers such as glass bottles and cans that are difficult to permeate oxygen. However, there is a problem that glass bottles are easily damaged by dropping, and cans that cannot be stored for a long time once opened. In addition, such oxidatively deteriorated contents may be separated when frozen, and the quality of the product may be deteriorated at once.
Therefore, a container that can be stored in a flexible container that does not break even if dropped and that can be stored without being brought into contact with the contents even after being opened once has been desired.

For the above problem, in Document 1, a double container in which an inner container having flexibility is accommodated inside an outer container having a squeezable deformable and recoverable body,
A discharge cap attached to the mouth of the double container and formed with a discharge port for discharging the contents contained inside the inner container;
Is provided,
The communication passage that communicates between the discharge port and the inside of the inner container is provided with an openable / closable closing means that closes the communication passage,
Due to the squeeze deformation of the double container, the inner container is reduced in volume and the inner pressure of the inner container becomes positive. The inner pressure of the inner container opens the closing means and discharges the contents through the communication passage. In the discharge container
An intermediate space formed between the outer container and the inner container communicates with the outside, and an outside air inflow passage is formed to allow outside air to flow into the intermediate space,
The outside air inflow passage is provided with a check valve that is kept closed when the internal pressure of the intermediate space becomes positive, and is opened when the internal pressure of the intermediate space becomes negative. There has been proposed a discharge container in which a valve seat portion on which a valve body of a stop valve is seated is made of an elastic body that can be elastically deformed as the internal pressure in the intermediate space increases.

However, this discharge container uses a delamination bottle (delami bottle) having a two-layer structure in which an outer layer and an inner layer are detachably laminated.
Therefore, it is a bottle and needs to be manufactured by a multilayer blow molding method, and there is a problem that equipment such as a machine is limited.
Moreover, even if the container is squeezed, if the reduced pressure in the container is not so great at the time of pouring, peeling will not start. In particular, there is a problem that it is not possible to deal with a container for pouring out a seasoning or the like that is used only a little.

Japanese Patent No. 5538057

In view of the above problems, the inner container can change the capacity even with a slight change in internal pressure, can reduce the capacity of the storage space, and can be easily manufactured without requiring a special manufacturing apparatus. Obtaining is the subject of the present invention.

The dispensing container according to claim 1 of the present invention comprises a bottle comprising a flexible and recoverable body portion and a rigid mouth portion;
A lower cap comprising an extraction port, a suction port and a lower cap central top plate;
An upper cap covering the extraction port;
A composite container consisting of an inner bag, with housed deformable flexible inside the bottle, the inner bag is fused to said suction port jumped from the mouth of the bottle,
Lower cap such that the suction port is positioned at the center of the spout is formed screwed to the mouth portion of the bottle,
The liquid contents are container pouring, characterized in that filled the gap between the bottle and the bag.

Furthermore, pouring container according to claim 2 of the present invention is a dispensing container according to claim 1, characterized in that it has sufficiently small compared with opening diameter of the lower cap to the suction aperture leading to the spout is there.

Furthermore, pouring container according to claim 3 of the present invention, note according to any one of claims 1-2 fused portion the cross-section of the suction port and the inner bag, which is a boat fused portion It is a delivery container.

The dispensing container according to claim 4 of the present invention is the dispensing container according to any one of claims 1 to 3 , wherein the bottle body section has an oval cross section.

Further, the dispensing container according to claim 5 of the present invention is the dispensing container according to any one of claims 1 to 4 , wherein a backflow prevention valve function is provided at the outlet opening.

The dispensing container according to claim 6 of the present invention is a dispensing container according to any one of claims 1 to 5 , wherein the inner bag is a film bag manufactured by sealing a film. It is.

Since the dispensing container of the present invention uses a highly flexible inner bag, it is easy to follow the internal pressure change, minimizes the head space inside the container in contact with the contents, and prevents oxygen from being oxidized. it can. Moreover, since it can manufacture with a general installation, manufacturing cost can be suppressed and the cost of a container can be suppressed even if it is a small lot.
In addition, since the appearance of the bottle is not deformed before and after the contents are poured out, the ease of use such as independence does not change.

It is a longitudinal cross-sectional view of the state with which the content for the extraction container of this invention is filled. It is the vertical cross-sectional view of the state which removed the cap and filled the contents with the container for extraction of this invention, and the cross-sectional view in an inner bag upper part and an inner bag center. It is the vertical cross-sectional view of the state which removed the cap and poured out much of the contents with the container for extraction of this invention, and the cross-sectional view in an inner bag upper part and an inner bag center. It is a cross section in the connection surface of the suction opening of a lower cap, and a lower cap center top plate in the container for extraction of this invention. It is a cross-sectional view in the connection surface of the suction port of the lower cap which is pouring the contents, and a lower cap center top plate with the container for extraction of this invention. FIG. 4 is a longitudinal sectional view in an embodiment in which a backflow prevention valve is provided on the lower cap central top plate in the dispensing container of the present invention, and a cross sectional view on the connection surface between the suction port of the lower cap and the lower cap central top plate. . It is a figure of the metal mold | die which shape | molds the lower cap of the container for extraction of this invention, and is sectional drawing which shows the state of a mold clamping state and the thread part slide. It is a figure of the metal mold | die which shape | molds the lower cap of the container for extraction of this invention, and is sectional drawing which shows the 3rd process which the screw part made into the 2nd process which a cavity side opens, and the lower cap is ejected. It is a figure of the metal mold | die which shape | molds the lower cap of the extraction container of this invention, and is sectional drawing which shows the process which pushes up a sleeve pin and takes out the lower cap.

Hereinafter, embodiments of the dispensing container of the present invention will be described in detail with reference to the drawings.
The dispensing container of the embodiment shown in FIG. 1 includes a bottle 4, an inner bag 1, an upper cap 3 and a lower cap 2.

The bottle 4 includes a body portion 41 that is flexible and can be restored, and a mouth portion 42 that has rigidity.
There may be a bottom 43 below the trunk 41 and a shoulder 44 between the trunk 41 and the mouth 42. In addition, a flange 45 may be provided on the lower side of the mouth portion 42 in order to facilitate filling of the contents. The body 41 may have a tube shape or a columnar shape, but when the oval shape has a flat cross section, it is easy to pour out with a slight press.
The bottle 4 is obtained by molding a thermoplastic plastic with a direct blow molding machine or an injection blow molding machine. The body of the bottle 4 is slightly thin and flexible, and the internal volume is reduced by pressing the body from the outside. Extruded and poured out.
When the pressure on the body portion is eliminated, the bottle 4 is subjected to a force for restoring the shape, the inside becomes a negative pressure, and a force for entering the outside air into the bottle is generated.

The inner bag 1 is housed inside the bottle and has a flexible flexibility. Since it is manufactured by sealing a soft film material, air can be easily taken into the interior even with a slight pressure difference. Moreover, since it is deformable, when inserting from the bottle opening part 42 of a narrow mouth, the inner bag 1 can be folded and wound, and can be inserted in the inside of a container.
The capacity of the inner bag needs to be not smaller than the inner volume of the bottle 4 when greatly inflated. If it is smaller than the inner volume of the bottle 4, there is a risk that the remaining amount of the content that has not been poured out will increase. Of course, not only the internal volume but also the length in the vertical direction and the length in the width direction must be sufficiently large.

The upper cap 3 covers the tip of the spout 21 and the suction port 222 of the lower cap and is liquid-stopped so that the content does not enter the inner bag 1 side and the content does not leak outside. There is a role to do.
Therefore, it is desirable to provide the outer inner ring 32 and the inner inner ring 33 on the inner side of the top plate 34 in the vicinity of contact with the spout 21 and the suction port 222 through which the contents pass. Of course, a contact ring may be used, or a combination may be used.

The lower cap 2 includes a spout 21, a suction port 22, a lower side wall 23, and a lower cap central top plate 24.
The spout 21 is fitted with the upper cap 3 and serves as a spout when the contents are poured out.
The lower end of the suction port 22 is fused with the inner bag 1 with a ship-shaped fusion part 221, and the upper end is a suction port 222 that fits with the upper cap 3 and takes in air when the contents are poured out. To ensure the tube.
It is desirable that the lower side wall 23 is fitted into the mouth portion 42 of the bottle 4, is strongly coupled to the bottle 4, and is strongly fitted so as not to be unnecessarily opened by opening and closing of the upper cap 3.
The lower cap center top plate 24 connects the spout 21, the suction port 22 and the lower side wall 23, and provides an opening 241 between the spout 21 and the suction port 22, so that the contents can be poured out. I am doing so. Further, an inner ring 242 for bottles and a contact ring 243 for bottles are provided below the lower cap central top plate 24 to stop liquid at the bottle mouth 42.

FIG. 2 is a longitudinal sectional view of the state in which the contents 5 are filled and the upper cap is removed, and a transverse sectional view of the inner bag upper end AA surface and the inner bag center BB surface.
As shown in FIG. 2A, the height of the suction port 222 is higher than the tip end height of the spout 21, so that it pops out. This pop-out height 25 is preferably larger than the pouring gap 26 between the tip of the spout 21 and the suction port 222.
The suction hole 224 communicates with the inside of the inner bag 1 from the tip of the suction port 222.

FIG. 2-2 is a cross-sectional view of the upper end AA surface of the inner bag 1. The width of the inner bag 1 is longer than the inner periphery of the bottle body 41, with the length of the unsealed part excluding the seal part 11 combined. In addition, the cross section of this bottle trunk | drum 41 is not circular but an oval shape. For this reason, the contents can be easily extracted by pushing the bottle body 41 from the outside, and air corresponding to the dispensed volume can easily enter from the suction port 222.
FIG. 2-3 is a cross-sectional view of the upper end BB surface of the inner bag 1. In the state where the contents 5 are completely filled, the outside air is not contained in the inner bag interior 10.

FIG. 3 is a vertical cross-sectional view of the state in which the upper cap is removed and most of the contents 5 are poured out, and a cross-sectional view of the inner bag upper end AA surface and the inner bag center BB surface.
FIG. 3A is a longitudinal cross-sectional view, and the contents 5 are poured out from the gap between the tip of the spout 21 and the suction port 222, and the outside air 6 flows from the suction port 222.
The suction hole 224 communicates with the inner bag interior 10 from the tip of the suction port 222.

3-2 is a cross-sectional view of the upper end AA surface of the inner bag 1. FIG. Since it is a seal portion, it is the same as in FIG.
FIG. 3C is a transverse cross-sectional view of the upper end BB surface of the inner bag 1. In the state where most of the contents 5 are poured out, the outside air enters the inner bag interior 10, the unsealed portion of the inner bag 1 that was slack in FIG. 2-3 is greatly stretched, and spreads along the inner wall of the bottle 4. Yes.
Thus, since the inner bag 1 spreads inside the bottle 4 and the contents 5 are pushed out, the contents 5 can be pushed out easily and reliably without crushing the container like an extruded tube.
Normally, even if the extruded tube is thoroughly extruded, the remaining amount of the contents remains 3 to 5%, but in this container, the remaining amount can be pushed out to 3% or less without difficulty.

FIG. 4 is a view showing a cross section of the lower cap central top plate 24 of the mouth portion 42.
FIG. 4A is a longitudinal sectional view in the vicinity of the spout, showing the CC surface which is the lower cap center top plate 24. FIG. 4B is a cross-sectional view of the CC surface, and shows an opening 241 provided between the spout 21 and the suction port 22 in a general lower cap center top plate 24.
Since the opening portion 241 is greatly opened, the lower cap central top plate 24 between the spout 21 and the suction port 22 has a rib shape.
FIG. 4-3 is a cross-sectional view of the CC surface, and shows an opening portion 241 for a high-viscosity content. In the case where a container having high viscosity and containing squeeze characteristics is required, a hole having a small diameter is used as the opening portion 241. If the opening 241 has a small diameter, a negative pressure is surely generated inside the bottle, and the air sucking force is increased, so that the inner bag 1 surely swells inside the bottle 4 even if the contents are highly viscous. Extrude the contents.

FIG. 5-1 is a longitudinal cross-sectional view showing a dispensing situation in a state where the contents of the container of the present invention are sufficiently filled.
The contents 5 are poured out from the spout 21 and the outside air 6 is sucked from the suction port 222 at the same time.
FIG. 5B shows a state in which the bottle 4 is further tilted and the contents 5 are poured out. The suction port 222 is provided so as to protrude from the tip of the spout 21. Since the pop-out amount 25 exists, the content 5 does not enter the suction port from the tip, but is poured out along the outer periphery of the suction port 222.
Therefore, the outside air 6 can enter the suction port 222 without any problem, the inner bag 1 is surely inflated, and the contents are poured out.

FIG. 6 is an example in which a backflow prevention valve 242 is provided on the lower cap center top plate 24.
If a backflow prevention valve is provided in this portion, the sucked outside air 6 reliably stays inside the container, and the contents can be poured out by slightly pushing the trunk.

7-9 is sectional drawing of each process which shows the example of embodiment in the injection mold of a lower cap.
FIG. 7-1 shows a state where the mold is clamped and injection molded.
FIG. 7-2 shows the second step, in which the upper screw portion 71 slides outward and the outer side of the cabinet is opened.
FIG. 8-1 shows the third step, in which the mold is opened and the cabinet side comes out of the product.
FIG. 8-2 is the fourth step, in which the lower screw part rotates and the lower screw part comes out while ejecting the product.
FIG. 9 shows the fifth step, in which the core-side sleeve pin 78 rises, pushes up the product from the hull fusion part 221, cuts the gate 791, and pulls out the lower cap 2. FIG. It is sectional drawing seen from the wide direction of the wearing part. Also, FIG. 9-2 is a cross-sectional view of the ship-shaped fusion part as seen from the narrow width direction. Since it opens, even if the tip of the ship-shaped fusion part is thin, it can be easily removed from the mold by ejecting the lower cap 2 and can be molded.
As described above, although it is complicated, the lower cap can be sufficiently molded with one mold and can be manufactured at low cost.

The inner bag 1 used in the present invention is not particularly limited as long as it is highly flexible, easily fused to the suction port, and is not violated by the contents.
For example, from the outside
Polyethylene terephthalate / polyethylene / polyamide / polyethylene,
Polyethylene terephthalate / polyethylene,
Polyamide / polyethylene / inorganic oxide vapor-deposited polyethylene terephthalate / polyethylene,
Polyethylene / polyamide / polyethylene / aluminum-deposited polyethylene terephthalate / polyethylene,
Polyamide / polyethylene / aluminum foil / polyethylene terephthalate / polyethylene,
Polyethylene terephthalate / polyethylene / ethylene vinyl acetate copolymer saponified product / polyethylene,
Polyethylene terephthalate / polyethylene / adhesive resin / polyamide / adhesive resin / polyethylene,
Polyethylene terephthalate / adhesive resin / ethylene vinyl alcohol copolymer / adhesive resin / polyethylene,
Such a configuration can be considered. A material that is not stiff as much as possible is preferable, but a material that is slippery in the contents is preferable for the outer layer, so that a stretched film such as polyethylene terephthalate or polyamide is thinned so that there is no waist and the strength is high Is preferred.
As the polyethylene inside the inner bag 1 film, high-pressure low-density polyethylene, linear low-density polyethylene, medium-density polyethylene, ethylene / vinyl acetate copolymer, and the like can be used. The film having the above structure can be produced using a dry lamination machine, an extruder laminating machine, a co-extrusion machine, or the like.

The lower cap 2 used in the present invention is not particularly limited as long as it has rigidity and is not violated by the contents, and can be fused to the inner bag 1.
Basically, it is a low density polyethylene, preferably a linear low density polyethylene, and is injection molded by an injection molding machine.

As the material of the bottle 4 used in the present invention, a resin that is not violated by the contents, is flexible, and has high resilience is preferable.
For example, in addition to single resin bottles such as low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, ethylene / propylene copolymer, acrylonitrile, polyamide / adhesive resin / polyethylene, ethylene / vinyl acetate A multilayer bottle such as polymer saponified product / adhesive resin / polyethylene may be used.
In addition, the effect of the present invention is difficult to achieve unless the bottle is easy to squeeze and return to its original shape. For this reason, it is desirable that the trunk section has an oval shape as shown in FIGS. Of course, even if it is a cylindrical trunk | drum, there is no problem depending on the material of a bottle.
In addition, although the bottle 4 used for this invention is manufactured with a blow molding machine, of course, if it is a method of raising the precision of a mouth by injection blow molding, an effect will be easy to produce further. Furthermore, it may be a stretch blow molding machine.

The container for pouring of the present invention is as described above, and the inner bag can change the capacity even with a slight change in internal pressure, so that the capacity of the storage section gap can be reduced, so without taking time and effort, When simply dispensing, the contents can be dispensed to the end simply by pushing the body of the bottle.
Further, it is possible to obtain a container that is easy to manufacture without requiring a special manufacturing apparatus.
In addition, the head space inside the container in contact with the contents does not flow outside when pouring, does not change significantly from the full capacity, and can be kept to a minimum. The advantages of the present invention are great, such as being able to secure moisture resistance.

1... Inner bag 10... Inner bag 11... Seal portion 2 .. Lower cap 21. ····························································································································· Inhaler Hole 23 ... Lower side wall 24 ... Lower cap central top plate 241 ... Opening part 25 ... Projection height 26 ... Pouring gap 3 ... Upper cap 32 ... Outer inner ring 33 ... Inner inner ring 34 ... ······································································································································· Bottom 44 ... Shoulder 45 ... Fran 5 ......... contents 6 ......... outside air 71 ........ on the threaded portion (slide)
72 ... Cavity core 73 ... Cavity pin 74 ... Internal threaded part (rotating core)
75 ... Stripper plate 76 ... Falling pin 77 ... Core pin 78 ... Sleeve pin 790 ...・ Runner 791 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Gate 792 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Sprue

Claims (6)

A bottle composed of a flexible and recoverable body and a rigid mouth,
A lower cap comprising an extraction port, a suction port and a lower cap central top plate;
An upper cap covering the extraction port;
A composite container consisting of an inner bag, with housed deformable flexible inside the bottle, the inner bag is fused to said suction port jumped from the mouth of the bottle,
Lower cap such that the suction port is positioned at the center of the spout is formed screwed to the mouth portion of the bottle,
Container The liquid contents pouring, characterized in that filled the gap between the bottle and the bag.   2. The container for pouring according to claim 1, wherein the diameter of the opening portion of the lower cap leading to the pouring outlet is sufficiently smaller than the diameter of the suction port.   The container for pouring according to any one of claims 1 to 2, wherein a cross-section of the fused portion between the suction port and the inner bag is a ship-shaped fused portion. The container for pouring according to any one of claims 1 to 3, wherein the bottle body section has an oval cross section.   The container for pouring according to any one of claims 1 to 4, wherein a backflow prevention valve function is provided at the opening of the pouring outlet.   The container for pouring according to any one of claims 1 to 5, wherein the inner bag is a film bag manufactured by sealing a film.