Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D83/00—Containers or packages with special means for dispensing contents
  • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
  • B65D83/36—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant allowing operation in any orientation, e.g. discharge in inverted position
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0059—Components or details allowing operation in any orientation, e.g. for discharge in inverted position

Definitions

• the present invention relates to a simple and inexpensive positive / inverted pouring container capable of pouring out a content liquid at the time of erecting and at the time of inverting, and having a simple and inexpensive structure.
• a dispensing container equipped with a dispensing head equipped with a pump mechanism for dispensing fluid has been widely used.
• the trigger mechanism is operated by triggering (pulling / returning) the trigger lever to inject or spray the liquid contained therein.
• a hand-pump type dispensing head that is operated by vertical movement by hand is commonly used.
• a flow switching device is provided on the inflow side of a pump mechanism 26 connected to a discharge port (not shown).
• the flow path switching mechanism 30 has an erecting passage 31 through which the content liquid passes when used upright, and an inverted passage 32 through which the content liquid passes when used upside down. Then, the outlet sides of the respective liquid passages are merged and connected to the pump mechanism 26 by the communication path 33.
• the upright liquid passage 31 and the inverted liquid passage 32 are respectively provided with an erect valve 34 and an inverted valve 35 each composed of a ball valve in this case.
• the inverted valve 35 closes and the erect valve 34 opens due to the weight of the ball valve as shown in Fig. 4, and the liquid content is drawn by the suction force of the pump mechanism 26. It is sucked into the pump mechanism 26 from the erecting passage 31.
• the inverted valve 35 opens and the upright valve 34 closes due to the weight of the ball valve, and the contents are inverted due to the suction force of the pump mechanism 26. It is sucked into the pump mechanism 26 from the liquid passage 32.
• Inverted valve 35 is closed during upright use, and upright valve 34 is closed when used upside down.
• the conventional flow path switching mechanism 30 requires a valve mechanism for each of the upright liquid passage and the inverted liquid passage, so that the structure is complicated, so that molding and assembly are complicated, and the ball (steel ball) ), Etc., the number of parts is large, and the manufacturing cost increases. For this reason, there was a problem in applying it to containers for inexpensive liquid drug products.
• the present invention has been made in order to solve the above-mentioned problems, and therefore, has a purpose of discharging a liquid content without a simple structure and inexpensive, and without hitting empty at the time of erecting or inverting. It is an object of the present invention to provide a positive / inverted dispensing container provided with a flow path switching mechanism capable of performing the operation. Disclosure of the invention
• the present invention provides a flow path switching mechanism having an erecting liquid passage through which a content liquid passes when in an upright use and an inverted liquid passage through which a content liquid passes when using an inverting device.
• the outlet side of each liquid passage merges and is connected to the pump mechanism, the inflow side of the upright liquid passage is directly opened to the bottom of the container, and the inverted liquid passage allows the content liquid to pass only when used upside down.
• a positive / inverted dispensing container having a valve and having a minimum cross-sectional area of 3 mm 2 or more.
• the inverted valve comprises a ball valve.
• the above-mentioned flow path switching mechanism is incorporated in a trigger / dispensing head capable of forward / inverted pouring mounted on the top of the container, or a hand-pump type dispensing head capable of forward / inverted pouring. Is Is preferred.
• FIG. 1 is a partial sectional view showing one embodiment of the present invention.
• FIG. 2 is a partial sectional view showing one embodiment of the present invention.
• FIG. 3 is a partial sectional view showing another embodiment of the present invention.
• FIG. 4 is a partial cross-sectional view showing an example of a conventional positive Z inverted pouring container.
• FIG. 5 is a partial cross-sectional view showing an example of a conventional positive / inverted pouring container.
• FIGS. 1 and 2 show, as an embodiment of the present invention, a part of a positive / inverted dispensing container in which a flow path switching mechanism 1 is incorporated in a trigger type dispensing head.
• Figure 1 shows the upright state
• Figure 2 shows the inverted state.
• the trigger type dispensing head 20 showing only the lower part is generally configured by a pump mechanism 26, a discharge port (not shown) connected to the outlet side thereof, and a pump mechanism 26. And a flow path switching mechanism 1.
• the trigger type dispensing head 20 is screwed to the neck 21 of the container body by a rotating cap 22.
• the flow path switching mechanism 1 has an erecting liquid passage 2 through which the content liquid passes when used upright, and an inverted liquid passage 3 through which the content liquid passes when used upside down. They merge and are connected to a pump mechanism 26 by a communication line 4.
• the inflow side of the erecting flow passage 2 is opened directly to the bottom of the container (not shown) without any valve mechanism.
• the inverted liquid passage 3 has a cylindrical shape at the upper part of the container and extends vertically, and a slit opening 7 is formed on a side surface thereof, into which the contents of the container flows.
• the inside of the inverted liquid passage 3 has a A ball ( ⁇ bulb) 5 is enclosed, and the ball 5 and the narrow portion 6 constitute a ball valve, which is an inverted valve 8 that allows the content liquid to pass only when used in an inverted state.
• the narrow portion 6 is a minimum cross-sectional portion of the inverted liquid passage 3 including the slit opening 7 and has a cross-sectional area of 3 mm 2 or more.
• the pump mechanism 26 linked with the trigger mechanism 25 will operate, and the pump will be filled in advance.
• the discharged content liquid is discharged from a discharge port (not shown).
• suction force is applied to the pump, and the contents are discharged from the open end of the erecting passage 2 extending to the bottom of the container to the communication passage 4.
• the pump mechanism 26 is filled and the preparation for the next trigger operation is completed.
• the gas phase G in the container is decompressed by the suction of the content liquid, but the vent hole 29 is opened to introduce outside air and balance the inside and outside pressures.
• the ball 5 closes the narrow portion 6 by its own weight and the inverted valve 8 is closed, so that the gas phase G in the container is sucked into the pump mechanism 26 through the inverted liquid passage 3. It is not a cause of blank hit.
• the pump mechanism 26 operates as in the upright state, and the liquid in the pump is discharged.
• the ball 5 of the flow path switching mechanism 1 falls in the inverted liquid passage 3 by its own weight as shown in FIG. 2, and the narrow portion 6 is opened.
• the inverted liquid passage 3 is below the liquid level and is immersed in the content liquid L.
• the liquid content flows into the inverted liquid passage 3 from the slit opening 7 due to the suction force of the pump, passes through the narrow portion 6 and passes through the communication line 4 to the pump mechanism 26. Is filled.
• the gas phase G in the container is decompressed, but the vent hole 29 is opened to introduce outside air, and the introduced outside air becomes bubbles and rises in the content liquid L to balance the inside and outside pressures.
• the cross-sectional area of the narrow section 6, which is the minimum cross section of the inverted liquid passage 3, is at least 3 mm 2 (about 2 mm in hole diameter), and the flow resistance of the content liquid L passing through the inverted liquid passage 3 is reduced. Is kept sufficiently low, so that the liquid passage from the vicinity of the outlet of the erecting liquid passage 2 to the lower part is filled with liquid during one trigger operation, and the pump is returned by returning the trigger. It is considered that the flow of the liquid from the inverted liquid passage 3 to the communication line 4 is secured during suction, and the inflow of the gas phase G from the erect liquid passage 2 is prevented.
• the prevention of gaseous phase mixing during inverted use is achieved by reducing the flow resistance in the inverted liquid passage 3, so that it is related to the viscosity of the content liquid. It is important to determine the cross-sectional area of the narrow part 6.
• the viscosity of the content liquid L sold in this type of dispensing container is in the range of 6 to 200 Ocp at room temperature.
• the amount to be dispensed per trigger is in the range of 0.7 to 1.1 ml. Since the operation interval of the trigger is generally 0.5 seconds and the quickest operation time is 0.2 seconds, if the liquid passage below the liquid surface is filled with the liquid L flowing from the slit opening 7 within this time. However, the inflow of the gas phase G from the erecting passage 2 is prevented, and the blanking is prevented.
• the hole diameter ( mm ) of the narrow portion 6 having a circular cross section was variously changed, and the presence or absence of the blanking phenomenon was tested in relation to the viscosity of the content liquid L.
• the test was performed for the trigger intervals of 0.5 seconds and 0.2 seconds, and a predetermined amount (1 ml) was dispensed without blanking.
• ⁇ the one that was hit in the air was evaluated as X.
• Table 1 shows the results.
• the upper limit of the cross-sectional area of the minimum cross-section is not particularly limited, but there is an upper limit in design in relation to the size, set position, and the ball diameter when using a ball valve that is allowed as a passage switching mechanism of the container. . From this viewpoint, in practice, it is preferable that the cross-sectional area of the minimum cross-section be within the range of 350 mm 2 .
• the minimum cross section in the above does not necessarily mean the narrow portion of the inverted valve 8.
• the cross section of the minimum cross section does not need to be circular. Therefore, for example, the slit opening 7 may be a minimum cross section.
• the inverted valve 8 is preferably a ball valve, but may be another type of valve, for example, an open / close door type valve, a butterfly valve, a diaphragm valve, or the like. (Example 2)
• FIG. 3 shows an example in which the flow path switching mechanism is incorporated in a hand pump type dispensing head.
• Figure 3 shows the inverted state of the container.
• the dispensing head 40 has a flow path switching mechanism 44, a pump mechanism 45, a push rod 46, and a discharge part 47.
• the flow path switching mechanism 44 is substantially equivalent to that of the first embodiment.
• the pump mechanism 45 pumps the liquid in the pump toward the discharge part 47 side, and the push rod 46 is returned by the urging of a panel (not shown). At this time, the contents are sucked from the container body and filled into the pump.
• the discharge part 47 discharges the content liquid fed through the push rod 46 from the tip of the nozzle 48.
• the discharge section 47 of the upright / inverted pouring container is pushed in by hand, and the push rod 46 is pushed into the pump mechanism 45, and the pump mechanism 45 is released.
• the liquid in the container is fed through the push rod 46 toward the discharge portion 47 side, and a predetermined amount is discharged from the nozzle 48.
• the push rod 46 When the hand is released, the push rod 46 returns to its original state.At this time, a suction force is applied to the pump, and the erecting liquid path 2 that extends to the bottom of the container from the erecting liquid path 2 through the communication path 4 to the pump mechanism Filled in 4 5
• the ball 5 closes the narrow portion 6 by its own weight and the inverted valve 8 is closed, so that the gas phase G in the container is sucked into the pump mechanism 45 through the inverted liquid passage 3. It does not cause an empty shot.
• the upright flow path 2 is opened when the inverted is used.
• the gas phase G is not sucked, so that no air bubbles enter the pump mechanism 45 and cause an empty shot.
• a vertically inverted dispensing container having a pump mechanism for intermittently discharging the content liquid and a flow path switching mechanism for switching the flow path of the content liquid to be sent to the pump mechanism in accordance with the use of the container when the container is inverted.
• the above-mentioned flow path switching mechanism has an erecting liquid passage through which the content liquid passes when used upright and an inverted liquid passage through which the content liquid passes when used upside down. It is connected to the pump mechanism and the inflow side of the erecting liquid passage is directly opened to the bottom of the container.
• the inverted liquid passage has an inverted valve that allows the content liquid to pass only when it is used upside down.
• Inverted pouring container with a cross section of 3 mm 2 or more.
• a trigger / dispensing dispensing head capable of normal / inverted dispensing is mounted on the top of the container, and the trigger switching dispensing head is provided with the flow path switching mechanism according to any one of (1) to (3).
• a hand-pump type dispensing head capable of inverting and dispensing in the positive Z direction is mounted on the top of the container, and the hand-pump type dispensing head is attached to the flow path switching device according to any one of (1) to (3).
• Positive / inverted dispensing container with built-in structure is mounted on the top of the container, and the hand-pump type dispensing head is attached to the flow path switching device according to any one of (1) to (3).
• the erect / inverted dispensing container of the present invention is provided with an inverting valve that allows the inflow side of the erecting flow path of the flow path switching mechanism to be directly opened to the bottom of the container and allows the content liquid to pass only when the inverted flow path is used upside down.
• the cross-sectional area of the minimum cross section is a 3 mm 2 or more and having a conventional flow path switching mechanism erecting flow-through path side of the valve mechanism that has been used is omitted, easy molding and assembly standing is And the number of parts such as balls (steel balls) can be reduced, and manufacturing costs Is reduced.
• the liquid content can be smoothly poured out when the erecting or the inverting, the liquid can be advantageously used as an inexpensive liquid product container.

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• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Closures For Containers (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Details Of Rigid Or Semi-Rigid Containers (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

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ID=18324853

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Cited By (3)

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Citations (4)

• 1997
  • 1997-12-09 JP JP9339164A patent/JPH11171228A/ja active Pending
• 1998
  • 1998-12-09 DE DE19882071T patent/DE19882071T1/de not_active Withdrawn
  • 1998-12-09 WO PCT/JP1998/005559 patent/WO1999029586A1/ja active Application Filing

Patent Citations (4)

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