JP2014069871A - Sealed cap for double container, and double container having the sealed cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealed cap for disabling a double container to be recharged again with contents, after the contents were used out, and a double container having the sealed cap.SOLUTION: A sealed cap 1 is adapted to be mounted in a mouth cylinder portion 12a of a laminated blow-molded bottom 10, which includes an inner layer body 11 for shrinking when the contents are extracted, and an outer layer body 12 for receiving the inner layer body 11. The sealed cap 1 is equipped with: an inside plug 1A constituted of a partition 3 fixed on the mouth cylinder portion 12a, and a cylindrical body portion 4 rising integrally from the partition 3; and a sealing plug 1B for sealing the cylindrical body portion 4 of the inside plug 1A removably. The sealing plug 1B has a pull ring 7c integrated through a connection member 7b with a plug 8 to be removably fitted on the cylindrical body portion 4.

Description

  The present invention relates to a technique for preventing a used double container from being refilled with contents.

  As the double container, for example, the inner layer body is in close contact with the inner side of the outer layer body to form a filling space for the contents, and when the contents are taken out by using a pump attached to the container, the inner layer body becomes the outer layer body. There is known a blow-molded container in which the contents can be efficiently taken out by peeling and shrinking from the inside (see, for example, Patent Document 1).

JP-A-8-52790

  Such double containers are usually used up on the premise that they are used up. In addition, since the inner layer body shrinks as the content decreases, it is generally difficult to refill the content.

However, the inventor of the present application has come to recognize that the contents can be refilled if the inner layer body is inflated and restored after it has been used up.
In this case, if the contents are poured in the state where the inner layer is not completely restored, the contents may overflow from the mouth of the container and contaminate the surroundings, and another kind of contents may be poured. And the contents remaining in the container may be mixed to cause quality degradation.

  An object of the present invention is to provide a double container sealing cap for preventing the contents from being refilled after being used up, and a double container including the same.

The sealing cap of the double container according to the present invention is a sealing of the double container attached to the mouthpiece of the double container comprising the inner layer body that contracts in response to the contents being taken out and the outer layer body that houses the inner layer body. A cap,
The sealing cap includes a partition wall fixed to the mouth tube portion, an inner plug composed of a cylindrical body portion standing integrally with the partition wall, and a sealing plug for detachably sealing the cylindrical body portion of the inner plug. It is.

  In the sealing cap according to the present invention, it is preferable that a mounting cylinder for pipe mounting leading to the cylindrical body portion is provided in the partition wall. Moreover, the said sealing plug shall be provided with the pull ring integrally provided via the connection piece in the plug body detachably fitted to a cylinder part.

  The sealing cap according to the present invention includes a double container in which the inner layer body and the outer layer body are assembled separately, and a double container formed by integrally blow-molding the inner layer body and the outer layer body as the inner layer and the outer layer, respectively. Although it can employ | adopt, in this invention, it is preferable to employ | adopt for the lamination blow molding container which has a peelable inner layer.

  Moreover, the double container provided with the sealing cap according to the present invention is formed by fixing the sealing cap to the mouth tube portion of the double container. At this time, the double container can be selected from a double container in which the inner layer body and the outer layer body are assembled separately, and a double container formed by integrally blow-molding the inner layer body and the outer layer body as the inner layer and the outer layer. However, in the present invention, a laminated blow-molded container having a peelable inner layer is preferable.

  The sealing cap of the present invention is filled in the inner layer body by erecting the cylindrical body portion from the partition fixed to the mouth tube portion and passing the passage formed inside thereof to the double container (inner layer body). The flow area of the contents is reduced. For this reason, when the contents are refilled, air replacement between the inner layer body and the outside becomes difficult. Therefore, refilling after the contents are used up can be prevented. Similarly, the double container provided with such a sealing cap can prevent refilling of the contents after it has been used up.

1 is an exploded side view of a blow molded bottle with a sealing cap according to the present invention in partial cross section with a trigger pump. FIG. It is a bottom view of the blow molding bottle. It is an enlarged view of FIG. 1 shown with the top view of the sealing stopper which concerns on the sealing cap. It is an expanded sectional view of the blow molding bottle with the cap after using up the contents.

  Hereinafter, a blow molded bottle having a sealing cap according to the present invention will be described in detail with reference to the drawings.

  In FIG. 1, reference numeral 1 is a sealing cap according to the present invention, and reference numeral 10 is a laminated blow-molded bottle including the sealing cap 1. The laminated blow-molded bottle 10 uses a co-extruded synthetic resin (not shown) made of synthetic resin, and the inner layer body 11 and the outer layer body 12 are respectively made of an inner layer (for example, nylon layer) and an outer layer (for example, PP layer) made of different materials. The (polypropylene) layer is integrally formed by direct blow molding. The inner layer body 11 is detachably adhered to the inner side of the outer layer body, and forms a filling space S for the content liquid therein. A trigger pump 20 described later can be detachably mounted on the mouth tube portion 12a of the laminated blow-molded bottle 10. In addition, an opening 12b for introducing outside air is formed between the inner layer body 11 and the outer layer body 12 in the mouth tube portion 12a. Further, when the bottom portion of the inner layer body 11 and the bottom portion of the outer layer body 12 are pinched off during blow molding, as shown in FIG. 2, a crack 12c is formed in the pinch off portion at the bottom portion of the outer layer body 12, and this crack 12c. May be an opening for introducing outside air between the inner layer body 11 and the outer layer body 12.

  On the other hand, as shown in FIG. 3, the sealing cap 1 includes an inner plug 1A fixed to the laminated blow-molded bottle 10 and a sealing plug 1B that detachably seals the inner plug 1A.

  The inner plug 1A has a fixing ring portion 2 that is fixed to the upper end portion of the mouth tube portion 12a. The fixing ring portion 2 has an outer peripheral wall 2a that surrounds the mouth tube portion 12a, and an inner peripheral wall 2c that is connected to the mouth tube portion 12a through a ceiling wall 2b at an interval, and the outer peripheral wall 2a and the inner peripheral wall 2c. Is attached to the upper end portion of the mouth tube portion 12a. The fixing ring portion 2 functions as a seal portion that seals and holds the mouthpiece portion 12a.

  The inner plug 1A has a partition wall 3 that is connected to the inside of the fixing ring portion 2 and protrudes toward the inside (filling space S) of the inner layer body 11. In the present embodiment, the partition wall 3 is connected to the inner peripheral wall 2c of the fixing ring portion, and the tapered inclined wall 3a whose diameter decreases toward the filling space S, the cylindrical wall 3b connected integrally with the inclined wall 3a, and the cylinder The bottom wall 3c closes the lower end of the wall 3b.

  Further, the inner plug 1 </ b> A has a cylindrical body portion 4 that stands integrally with the partition wall 3. A through hole 4 a is formed in the cylindrical body portion 4. The through hole 4a communicates with the filling space S through the bottom wall 3c where the cylindrical body portion 4 stands. In addition, the inner plug 1 </ b> A is provided with a mounting cylinder 5 that communicates with the cylindrical body portion 4 in the partition wall 3. A pipe 6 extending toward the filling space S is mounted on the mounting cylinder 5. Inside the pipe 6, a flow path 6 a that allows the filling space S to communicate with the through hole 4 a is formed.

  On the other hand, the sealing plug 1B protrudes integrally from the flange portion 7 so as to be detachably fitted into the distal end opening of the cylindrical body portion 4, and protrudes so as to surround the plug body 8 so as to surround the plug body 8. An annular cylinder 9 is provided for hermetically holding the cylinder part 4 therebetween. The flange portion 7 is formed with a C-shaped cutout portion 7a so as to surround the plug body 8 and the annular tube 9, and the plug body 8 is integrally provided with a pull ring 7c via a connecting piece 7b. Thereby, if a user hooks a finger on the pull ring 7c and pulls it up, as shown in FIG.

  Next, the operation and effect of the sealing cap 1 will be described.

FIG. 4 shows a laminated blow-molded bottle 10 having an inner stopper 1 </ b> A after the contents are used up by the trigger pump 20. After the contents are used up, as shown in the figure, the inner layer body 11 contracts, so that it is difficult to refill the contents. Moreover, the inner plug 1A is filled in the inner layer body 11 by erecting the cylindrical body portion 4 from the partition wall 3 fixed to the mouth cylindrical portion 12a and passing the passage 4a formed inside thereof to the filling space S. The flow area of the contents (the inner diameter Φ ₄ of the through hole 4a) is smaller than the flow area when the inner plug 1A is not fixed (the inner diameter Φ ₁₀ in the mouth tube portion of the inner layer body 11). For this reason, if the inner plug 1A is fixed to the mouth tube portion 12a, air replacement between the filling space S of the inner layer body 11 and the outside world becomes difficult when the contents are refilled. Therefore, according to the sealing cap 1, it is possible to prevent refilling or the like after the sealing plug 1B is removed and the contents are used up. Similarly, the laminated blow-molded bottle 10 provided with such a sealing cap 1 can also prevent the contents from being refilled after being used up. Furthermore, by preventing the act of refilling in advance, the risk of the contents overflowing from the mouth of the container and contaminating the surroundings can be avoided, and mixing with the remaining liquid caused by another type of content being poured can also be avoided. Therefore, it is possible to avoid quality deterioration and pump operation failure.

  In addition, by erecting the cylinder part 4 from the inner plug 1A, the unitized trigger pump 20 as shown in FIG. Can do.

  The trigger pump 20 of FIG. 1 forms a cylinder 23 in a body 22 having an intake 21, arranges a piston 24 in the cylinder 23, and further, a pump chamber R formed by the cylinder 23 and the piston 24. A suction valve 25 and a discharge valve 26 are disposed on the suction side and the discharge side, respectively, and a trigger 27 that can check and return the valve is provided. The trigger pump 20 can cause the contents from the intake 21 to be sucked, pressurized and pumped and sprayed from the nozzle 28 by operating the piston 24 by repeatedly checking the trigger 27 and returning it.

  The trigger pump 20 can be detachably screwed into the mouth tube portion 12 a of the laminated blow-molded bottle 10 through the mounting tube 29. The intake 21 is configured as a joint part. The input end 21 a of the intake 21 can be fitted in a sealed state with respect to the tubular body portion 4 using the tubular body portion 4 as an adapter. Thus, according to the sealing cap 1 according to the present invention, the unitized trigger pump 20 can be attached by raising the cylindrical body portion 4 from the inner plug 1A. The trigger pump 20 is an example, and a member having a suction port is also used as a joint part for a so-called pressing head pump or spray that causes pump operation by repeatedly pressing and returning the head. Can be attached in the same way.

  The above are various embodiments of the present invention, but various modifications are possible according to the present invention. For example, the mouth tube portion 12a is not limited to the configuration to be screwed, and includes, for example, a configuration in which plugging is performed by uneven fitting such as undercut fitting. In addition, as described above, the laminated blow-molded bottle 10 can introduce outside air between the inner layer body 11 and the outer layer body 12 through the opening 12b formed in the mouth tube portion 12a. For this reason, the inner layer body 11 and the outer layer body 12 are respectively formed as an inner layer (for example, PP (polypropylene)) and an outer layer (PET (polyethylene terephthalate) layer) by using a laminated preform as an intermediate body. As a double container, as in this embodiment, the inner layer body and the outer layer body are respectively formed as an inner layer and an outer layer, and the inner layer body and the outer layer are blown integrally. A double container in which the body is assembled as a separate body can also be adopted.In addition, the inner layer body (inner layer) 11 is not limited to a single layer body (single layer), but can also be configured as a laminated body (laminated layer).

  The present invention can be applied to various objects as long as it is a double container comprising an inner layer body that contracts in response to the contents being taken out and an outer layer body that houses the inner layer body.

DESCRIPTION OF SYMBOLS 1 Sealing cap 1A Middle plug 1B Sealing plug 2 Fixing ring part 3 Bulkhead 4 Cylinder part 4a Through-hole 5 Pipe installation cylinder 6 Pipe 6a Flow path 7 Flange part 7a Notch part 7b Connection piece 7c Pull ring 8 Plug body 9 Cylindrical cylinder 10 Laminated blow molded bottle (double container)
11 Inner layer (inner layer)
12 Outer layer body (outer layer)
12a Mouth tube 12b Opening (outside air introduction hole)
12c crack (outside air introduction hole)
20 Trigger Type Pump 21 Intake 22 Body 23 Cylinder 24 Piston 25 Suction Valve 26 Drain Valve 27 Trigger 28 Nozzle 29 Installation Tube S Filling Space

Claims (5)

A double container sealing cap attached to the mouthpiece of the double container consisting of an inner layer body that contracts in response to removal of the contents and an outer layer body that houses the inner layer body,
The sealing cap includes a partition wall fixed to the mouth tube portion, an inner plug composed of a cylindrical body portion standing integrally with the partition wall, and a sealing plug for detachably sealing the cylindrical body portion of the inner plug. A double container sealing cap.   2. The sealing cap for a double container according to claim 1, wherein the partition wall is provided with a mounting cylinder for pipe mounting leading to the cylindrical body portion.   3. The sealing cap for a double container according to claim 1, wherein the sealing plug is formed by integrally connecting a pull ring to a plug body detachably fitted to the cylindrical body portion via a connecting piece.   The double container provided with the sealing cap formed by fixing the sealing cap of any one of Claims 1 thru | or 3 to the mouth tube part of a double container.   5. The double container according to claim 1, wherein the double container is a laminated blow molded container having a peelable inner layer.

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