JP2009143625A - Pump device and container with pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pump device capable of realizing gas barrier performance at low cost without forming the pump device from a material having gas barrier characteristics, and a container with a pump constituted by attaching the pump device to the mouth part of a container body having gas barrier characteristics. <P>SOLUTION: The pump device 13 of the invention is configured to be attached to the mouth part 11b of the container body 11 having the gas barrier characteristics. A metering chamber 19 in the container body 11 is filled with a gas inactive against contents in the container body 11. The pump-equipped container 10 of the invention is constituted by attaching the pump device 13 to the mouth part 11b of the container body 11 having gas barrier characteristics. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pump device configured to be fixable to a mouth portion of a container body having gas barrier properties, and a pump-equipped container in which the pump device is secured to a mouth portion of a container body having gas barrier properties.

Conventionally, high oxygen barrier properties are required for containers that contain contents that are deteriorated by oxygen. For example, in the case of containers that contain hair dyes, aluminum tube containers are widely used. .
On the other hand, in order to improve the usability of the container, various containers with a pump in which a pump device is fixed to the mouth portion of the container body have been proposed. For example, Patent Document 1 discloses a tube container with a pump that discharges from a nozzle portion of a pump device while sucking the contents accommodated in the container body by a pump device fixed to the mouth of the container body. Yes.

JP-A-8-11905

In the case where the content (for example, hair dye) that deteriorates due to oxidation is contained in such a tube container with a pump, it is necessary to impart oxygen barrier properties to the entire container including the pump device. Generally, since it is formed from a polyolefin resin or the like that is inferior in oxygen barrier properties, it is necessary to devise such as forming a part of the pump device with a member having oxygen barrier properties, which may lead to high costs (Problem 1 )
Therefore, it is conceivable that only the tube container is provided with an oxygen barrier property and the pump device is attached to such a tube container at the time of use. However, it takes time and effort to install the tube device and the pump device is separated. Therefore, there is a problem that a container such as a box for storing the tube container before use becomes necessary, or the size of the product (container with pump) becomes large as a whole (problem 2).
The above-mentioned problem also applies when a gas barrier property other than the oxygen barrier property needs to be imparted to the pump device, and also applies to a container other than a tube container, and is configured to be separable from the container body. This also applies to the pump device.

  Accordingly, an object of the present invention is to provide a pump device and a pump-equipped container that can realize the gas barrier property of the pump device at low cost without forming the pump device from a member having gas barrier properties. .

  The present invention is a pump device configured to be fixable to the mouth of a container body having gas barrier properties, and the measuring chamber is filled with a gas that is chemically inert to the contents of the container body. The above object is achieved by providing a pump device.

  This invention achieves the said objective by providing the container with a pump by which the said pump apparatus is fixed to the opening part of the container main body which has gas-barrier property.

  According to the pump device and the pump-equipped container of the present invention, the gas barrier property of the entire pump device and the pump-equipped container can be realized at low cost without forming the pump device from a member having gas barrier properties.

Hereinafter, a pump device and a pump-equipped container according to the present invention will be described with reference to the drawings based on a first embodiment which is a preferred embodiment thereof. The pump device of the present invention constitutes a part of the container with a pump of the present invention, and the pump device 13 of the first embodiment will be described together with the pump device 13 of the first embodiment. .
As shown in FIGS. 1 and 2, the pump-equipped container 10 of the first embodiment is a container with a pump in which a pump device 13 is fixed to a mouth portion 11b of a container main body 11 having gas barrier properties.
The pump device 13 includes a pump body 15 including a measuring chamber 19 and a nozzle portion 14.

The container main body 11 is made of a flexible sheet material, and is a cylindrical body in which an end portion (also referred to as “lower end portion”) 11a opposite to the mouth portion 11b is closed.
The container body 11 accommodates contents (not shown) that deteriorate due to oxidation.
As such a content, the 1st agent of a 2 agent type hair dye is mentioned, for example, The 1st agent of a 2 agent type hair dye is accommodated in the container main body 11 in this embodiment. The contents stored in the container body 11 are sucked by the pump action of the pump device 13 and discharged from the nozzle portion 14.

  The pump main body 15 has an outer peripheral surface portion 16 that is in close contact with the inner peripheral surface 11 c of the mouth portion 11 b of the container main body 11, and the outer peripheral surface portion 16 is in close contact with the inner peripheral surface 11 c and covered with the container main body 11. In a broken state, it is fixed to the mouth portion 11b.

The container main body 11 is made of a sheet material having an oxygen barrier property in order to prevent deterioration of the contents when the contents deteriorated by oxygen are accommodated. As such a sheet material, for example, an aluminum laminate resin can be cited. The container body 11 is formed in a cylindrical shape having an inner diameter of about 10 to 50 mm and a height (length) of about 70 to 200 mm, for example.
The lower end 11a of the container body 11 is closed as follows, for example. First, the pump device 13 is fixed to the mouth portion 11b. In accordance with a conventional method for forming a tube container with a pump, the container body 11 is filled with contents from the lower end portion 11a. Thereafter, the innermost sealant layers in the aluminum laminated resin sheet are heat-sealed using a known heat-sealing means while crushing the lower end portion 11a into a flat shape. FIG. 1 shows a state before the lower end portion 11a is closed by heat sealing.

  The pump device 13 fixed to the mouth portion 11b of the container body 11 is generally made of a synthetic resin such as a polyolefin resin, and includes the pump body 15 and the nozzle portion 14 as described above. The pump body 15 includes a known pump mechanism including a measuring chamber 19 therein. Specifically, a cylindrical cylinder 20, a piston 21 that closely contacts and slides on the inner surface of the cylinder 20, a suction valve 22 provided at the lower end of the cylinder 20, a discharge valve 23 provided at the lower end of the piston 21, and the like. Prepare.

  The pump body 15 has an outer shell portion formed by a cylindrical sleeve-shaped outer peripheral surface portion 16. The outer peripheral surface portion 16 has an outer diameter that is the same as or slightly larger than the inner diameter of the container main body 11, and therefore, the outer peripheral surface of the outer peripheral surface portion 16 is inserted into the mouth 11 b of the container main body 11 by the pump main body 15. When attached, it firmly adheres to the inner peripheral surface 11c of the mouth portion 11b.

  The outer peripheral surface of the outer peripheral surface portion 16 of the pump main body 15 is made of a polyolefin resin or the like having heat sealing properties, and after the pump main body 15 is mounted on the mouth portion 11b of the container main body 11, the container main body is used using a known heat sealing means. By performing heat sealing from the outside of the main body 11, the outer peripheral surface of the outer peripheral surface portion 16 of the pump main body 15 and the inner peripheral surface 11c of the mouth portion 11b of the container main body 11 can be tightly bonded tightly in an airtight state. become.

  The nozzle portion 14 is connected to the piston 21 and is provided so as to protrude upward from the pump body 15. According to the pump device 13, for example, by repeatedly pressing the nozzle portion 14, the piston 21 is brought into close contact with the cylinder 20, and the pumping action causes the contents to be removed from the container body 11 through the suction valve 22. It can be sucked into the measuring chamber 19. Then, a necessary amount of the content sucked into the measuring chamber 19 can be discharged from the nozzle opening 14 a at the tip of the nozzle portion 14 via the discharge valve 23.

  As described above, the pump device 13 is made of a synthetic resin such as a polyolefin resin. However, the pump device 13 formed from such a material itself does not have an oxygen barrier property. Thus, in the pump device 13 of the present embodiment, the measuring chamber 19 is filled with an inert gas with respect to the contents of the container body 11. Here, “inert” is relative to the contents. Specifically, examples of the gas inert to the contents that deteriorate with respect to oxygen, such as the hair dye in the present embodiment, include nitrogen gas and helium gas.

According to the container 10 with a pump of 1st Embodiment which has the above structure, the following effects are show | played.
Since the metering chamber 19 of the pump device 13 is filled with a gas inert to the contents (hair dye) of the container body 11, the pump device 13 is formed from a member having a gas barrier property (oxygen barrier property). Even if not, the gas barrier property of the pump device 13 can be realized at low cost.

  Further, the overall size of the pump-equipped container 10 can be easily reduced while maintaining the gas barrier property. That is, the pump main body 15 has an outer peripheral surface portion 16 that is in close contact with the inner peripheral surface 11 c of the mouth portion 11 b of the container main body 11, and this outer peripheral surface portion 16 is the inner peripheral surface 11 c of the mouth portion 11 b of the container main body 11. Since the pump device 13 is mounted on the mouth portion 11b of the container body 11 in a state where the pump device 13 is in close contact with and covered with the container body 11, the portion projecting from the mouth portion 11b of the container body 11 is substantially covered by the pump device 13. Only the nozzle portion 14 can be provided. Therefore, the overall size of the pump-equipped container 10 can be easily reduced while maintaining gas barrier properties, and a well-balanced design can be realized.

  Next, another embodiment of the container with a pump of the present invention will be described. In the other embodiments, differences from the first embodiment described above will be mainly described, and the same points are denoted by the same reference numerals and description thereof will be omitted. For the points that are not particularly described, the description of the first embodiment is applied as appropriate. In other embodiments, the same effects as those of the first embodiment can be obtained.

The container 10 with a pump of 2nd Embodiment improves the gas barrier property of the pump apparatus 13 further by using the member which has gas barrier property for a part of pump apparatus 13. FIG.
Specifically, in the container 10 with a pump according to the second embodiment, as shown in FIG. 3, the barrier material 17 is attached so as to cover the upper end surface of the pump body 15 of the pump device 13. The barrier material 17 is made of, for example, a resin having an excellent oxygen barrier property such as an aluminum laminate resin, a polyethylene naphthalate resin (PEN), an ethylene vinyl alcohol copolymer resin (EVOH), or the like.

  In the second embodiment, since the barrier material 17 is attached so as to cover the upper end surface of the pump body 15, that is, to cover the inner diameter cross section of the measuring chamber 19 and the upper part of the outer wall portion, the gas barrier property of the pump device 13 is improved. It is further improved.

As shown in FIGS. 4 (a) and 4 (b), the pump-equipped container 10 of the third embodiment has a discharge valve 27 constituting a pump mechanism provided in the pump main body 26, which is opened and closed in the measuring chamber 19. It is a mechanical on-off valve that is mechanically performed without any internal pressure change. That is, the discharge valve 27 does not open even when the measuring chamber 19 is pressurized, and is a valve that opens mechanically when the nozzle portion 14 is pressed.
More specifically, in the pump-equipped container 10 according to the third embodiment, the piston 28 of the pump body 26 is in close sliding contact with the piston mounting cylinder 30 having the protruding bottom portion 29 at the lower end portion along the inner peripheral surface of the cylinder 31. The overhanging sliding contact portion 32a and a hat-shaped sliding tube 32 having an inner peripheral sliding contact portion 32b that comes into close sliding contact with the outer peripheral surface of the piston mounting tube 30.

  In the state before the nozzle portion 14 is pressed, the overhanging locking flange 34 a of the pressing inner cylinder 34 integrally connected to the upper portion of the piston mounting cylinder 30 by the biasing force of the spring member 33 is the lower end of the top plate 35 of the pump body 26. It is abuttingly locked to the locking portion 35a. In this state, the annular convex rib 36 projecting downward from the lower surface of the projecting portion of the sliding cylinder 32 is in close contact with the annular groove 37 provided on the peripheral surface of the upper surface of the projecting bottom portion 29 of the piston mounting cylinder 30. Thus, the distribution of the contents between them is blocked (see FIG. 4A).

When the nozzle part 14 is pressed against the urging force of the spring member 33 and the pressing inner cylinder 34 and the piston mounting cylinder 30 are pushed down together with the nozzle part 14, first, the overhanging flange 34a of the pressing inner cylinder 34 It moves downward from the state of being in contact with the lower end locking portion 35a of the top plate 35 of the main body 26 until it is in contact with the upper surface of the protruding portion of the sliding cylinder 32 (see FIG. 4B). As a result, the piston mounting cylinder 30 moves downward relative to the sliding cylinder 32, so that the annular convex rib 36 of the sliding cylinder 32 is formed in the annular concave groove of the protruding bottom portion 29 of the piston mounting cylinder 30. A gap that allows the contents to circulate between them is formed. As described above, when the nozzle portion 14 is pushed, the piston mounting cylinder 30 substantially integrated with the nozzle portion 14 moves, and the valve body (annular convex rib 36) and the valve seat (annular concave groove 37) are moved. The valve opens when the seal between them is removed.
That is, the spring member 33, the annular convex rib 36 of the sliding cylinder 32, and the annular concave groove 37 of the projecting bottom portion 29 of the piston mounting cylinder 30 are mechanically opened and closed without any pressure change inside the measuring chamber 19. The discharge valve 27 is configured.

  If the pressing inner cylinder 34 and the piston mounting cylinder 30 are further pushed down, the overhanging bottom portion 29 of the piston mounting cylinder 30 together with the sliding cylinder 32 moves downward to pressurize the measuring chamber 19 (FIG. 4 ( b)). As a result, the contents inside the measuring chamber 19 are transferred to the gap between the outer peripheral surface of the overhanging bottom portion 29 of the piston mounting cylinder 30 and the inner peripheral surface of the cylinder 31, and the annular convex rib 36 of the sliding cylinder 32 and the piston mounting. The tube 30 is pushed upward through a gap between the projecting bottom 29 of the tube 30 and the annular concave groove 37. The extruded content flows into the hollow interior of the piston mounting cylinder 30 through the discharge valve hole 38 formed in the piston mounting cylinder 30 and then passes through the nozzle portion 14 and is discharged from the nozzle opening 14a at the tip. Will be.

  If the pressure on the nozzle portion 14 is released, first, the piston mounting cylinder 30 moves together with the nozzle portion 14 relative to the sliding cylinder 32, so that the annular convex rib 36 of the sliding cylinder 32 is The discharge valve 27 is closed by close contact with the annular groove 37 of the overhanging bottom 29 of the piston mounting cylinder 30. Further, the piston mounting cylinder 30 and the sliding cylinder 32 are united and raised until the overhanging locking flange 34a of the pressing inner cylinder 34 comes into contact with the lower end locking portion 35a of the top plate 35 of the pump body 26, Return to the original state shown in 4 (a). Along with this, the inside of the measuring chamber 19 becomes negative pressure, so that the contents of the container body 11 flow into the measuring chamber 19 while opening the suction valve 22.

  And according to the container 10 with a pump of 3rd Embodiment, since the discharge valve 27 is a mechanical on-off valve which opens and closes without being based on the pressure change inside the measurement chamber 19, the container 10 with a pump is manufactured. For example, even if the inert gas filled in the measuring chamber 19 is expanded due to a change in the ambient environmental temperature, the discharge valve 27 is increased due to the increase in the internal pressure of the measuring chamber 19 due to the expansion. There is no risk of opening. Accordingly, it is possible to effectively avoid the leakage of the inert gas sealed in the inside of the measuring chamber 19 until the pump-equipped container 10 is manufactured and used, and the pump device 13 and the pump-equipped container. The gas barrier property of 10 can be further improved.

  The present invention is not limited to the embodiments described above, and various modifications can be made. For example, the pump device 13 of the above-described embodiment is fixed to the mouth portion 11b of the container body 11 having gas barrier properties to constitute the container 10 with a pump. A pump device (not shown) configured to be detachable from the portion 11b may be used. According to the pump device having such a configuration, the same function as the pump-equipped container 10 of the above-described embodiment can be exhibited by fixing the contents to the container body 11 in which the contents are accommodated.

  In the above embodiment, since the content is a hair dye that deteriorates due to oxygen, the container body 11 is formed of a material having an oxygen barrier property, and the hair chamber contains a hair dye in the measuring chamber 19 of the pump device 13. Although the inert gas is filled, in the present invention, the material forming the container body 11 and the inert gas filled in the measuring chamber 19 can be appropriately changed according to the contents. For example, when a content liquid containing sodium hydroxide or the like that deteriorates due to carbon dioxide is stored in the container body 11, the container body 11 is formed from a material having a carbon dioxide barrier property, and the measurement chamber 19 is made of sodium hydroxide. In contrast, an inert gas may be filled.

In the embodiment, the container body 11 is a cylindrical body (that is, a tube) made of a flexible sheet material. However, in the present invention, a configuration other than a tube, for example, a bottle container may be used.
The means for tightly bonding the outer peripheral surface portion 16 of the pump main body 15 and the inner peripheral surface 11c of the mouth portion 11b of the container main body 11 may be a hot melt adhesive in addition to heat sealing.

  Further, as shown in FIG. 5, a skirt wall 18 is provided outside the outer shell portion of the pump body 15 to form a double wall structure, and the outer peripheral surface portion 16 can be formed from the skirt wall 18. By adopting the double wall structure, there is an advantage that an excessive load is not applied to the pump body 15 when the container body 11 and the pump body 15 are heat sealed.

  Between the outer peripheral surface portion 16 (skirt wall 18) of the pump main body 15 in the pump device 13 and the inner peripheral surface 11c of the mouth portion 11b of the container main body 11, as shown in FIG. The flange heat seal 24 that covers the outer peripheral surface portion 16 and the upper end portion of the pump body 15 can be applied, and the flange heat seal 25 that covers the outer peripheral surface portion 16 of the pump body 15 is applied as shown in FIG. You can also.

  As shown in FIG. 7A, the outer peripheral surface portion 16 (skirt wall 18) of the pump main body 15 and the inner peripheral surface 11c of the mouth 11b of the container main body 11 are fitted by screw fitting. It can also be fixed, and as shown in Drawing 7 (b), it can also be made to fix by drive-in fitting.

FIG. 1 is a longitudinal sectional view showing a container with a pump according to a first embodiment of the present invention. FIG. 2 is a partially enlarged view of the container with a pump shown in FIG. FIG. 3 is a partially enlarged longitudinal cross-sectional view (corresponding to FIG. 2) showing the pump-equipped container according to the second embodiment of the present invention. FIG. 4 (a) shows a container with a pump according to a third embodiment of the present invention. FIG. 4 (b) is a partially enlarged view of a vertical cross-section with the discharge valve closed, and FIG. It is a longitudinal cross-section partial enlarged view (corresponding to FIG. 2) in an opened state. FIG. 5 is a partially enlarged longitudinal sectional view (corresponding to FIG. 2) showing a first modified example of the fixing form of the pump device and the container main body. 6 (a) and 6 (b) are partially enlarged vertical sectional views (corresponding to FIG. 2) showing second and third modified examples of the fixing form of the pump device and the container body, respectively. FIG. 7A and FIG. 7B are longitudinal sectional partial enlarged views (corresponding to FIG. 2) showing fourth and fifth modified examples of the fixing form of the pump device and the container body, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Container 11 with a pump 11 Main body 11a Lower end part 11b Opening part 11c Inner peripheral surface 13 Pump apparatus 14 Nozzle part 15 Pump main body 16 Outer peripheral surface part 19 Measuring chamber 27 Discharge valve (mechanical on-off valve)

Claims (8)

A pump device configured to be fixable to a mouth portion of a container body having gas barrier properties,
A pump device in which the measuring chamber is filled with a gas inert to the contents of the container body. The container body is made of a flexible sheet material, and is a cylindrical body whose end opposite to the mouth is closed.
The pump device according to claim 1, further comprising a pump body including the measuring chamber and a nozzle portion. The pump body has an outer peripheral surface portion that is in close contact with the inner peripheral surface of the mouth of the container main body,
The pump device according to claim 2, wherein the outer peripheral surface portion is fixed to the mouth portion in a state in which the outer peripheral surface portion is in close contact with the inner peripheral surface and covered with the container body.   The pump according to claim 2 or 3, wherein the discharge valve of the pump mechanism provided inside the pump body is a valve that does not open even when the metering chamber is pressurized and mechanically opens when the nozzle is pressed. apparatus.   The pump device according to any one of claims 1 to 4, wherein the content is deteriorated by oxygen, and the gas barrier property of the container body is an oxygen barrier property.   A container with a pump, wherein the pump device according to any one of claims 1 to 5 is fixed to a mouth of a container body having gas barrier properties.   The pump device includes a pump body including the measuring chamber, and the outer peripheral surface portion of the pump main body and the inner peripheral surface of the mouth of the container main body are closely bonded by heat sealing or hot melt adhesive. A container with a pump according to claim 6.   The pump device includes a pump main body including the measuring chamber, and an outer peripheral surface portion of the pump main body and an inner peripheral surface of the mouth of the container main body are fitted by screw fitting or driving fitting. The container with a pump according to claim 6.

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