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
  • B65D83/16—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 characterised by the actuating means
  • B65D83/20—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 characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps
• • 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
  • B65D83/38—Details of the container body
  • B65D83/384—Details of the container body comprising an aerosol container disposed in an outer shell or in an external container
• • 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
  • B65D83/44—Valves specially adapted therefor; Regulating devices
  • B65D83/52—Valves specially adapted therefor; Regulating devices for metering
• • 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
  • B65D83/60—Contents and propellant separated
  • B65D83/62—Contents and propellant separated by membrane, bag, or the like

Definitions

• the present invention relates to a fluid dispenser comprising a fluid reservoir containing fluid under pressure, a valve through which the pressurized fluid product is discharged, and a dispensing head that cooperates with the valve to dispense fluid product. through a dispensing orifice.
• the dispensing head comprises a dispensing nozzle connected to the valve and defining a supply duct which connects the valve to the dispensing orifice, and a pusher for moving the dispensing nozzle according to an actuating axis X between a rest position in which the valve is closed and a depressed position in which the valve is open. By pressing the pusher, the valve opens and the fluid under pressure passes through the dispensing nozzle and out at the dispensing orifice.
• This type of dispenser can be described as an aerosol and finds a preferred application in the fields of cosmetics or pharmacy, without excluding food and household products.
• a particular type of aerosol uses an outer shell which encloses a flexible bag mounted at the entrance of the valve. Pressurized gas is introduced between the shell and the bag to pressurize the bag.
• the fluid product to be dispensed can be introduced under pressure into the flexible bag, so that the fluid can be stored under a pressure of about 8 bar at the start and still close to 3 bar when the bag is almost empty.
• This type of aerosol without propellant mixed with the fluid to be dispensed, is known under the designation "Bag on Valve" and provides many advantages, such as a total separation between the fluid and the propellant and a restitution approaching 100%.
• the object of the present invention is to provide a dispenser with a discrete or dosed distribution, similar to that of a pump, but from a dispenser of the continuous dispensing aerosol type, as described above, and in particular an aerosol of type "Bag on Valve". More specifically, a problem of the invention is to intervene between the pusher and the dispensing tip so that a conventional support on the pusher generates a short duration distribution which is independent of the duration of the pressing on the pusher but only the support force which is that of a conventional aerosol pusher. In other words, a support, even prolonged, on the pusher must produce a spray or a brief jet, succinct or ephemeral, whose duration is reproducible.
• the dispensing head further comprises:
• a limited thrust member which transmits the axial thrust force of the pusher to the dispensing nozzle to move it axially on a limited stroke which is, however, sufficient to open the valve
• a thrust release member which acts on the limited thrust member by releasing the dispensing tip of the axial thrust force of the pusher transmitted by the thrust member limited at the end of the limited axial stroke, so that the dispensing nozzle returns to its rest position and the valve closes.
• the total stroke of the pusher must be at least equal to the limited axial stroke of the dispensing tip and preferably slightly or noticeably higher, especially at the end of the stroke, in order to guarantee the release of the dispensing nozzle at the end of the stroke. end of its limited axial stroke.
• the pusher can continue its course after the release of the dispensing tip. The pusher can thus remain depressed, but this has no effect on the distribution of fluid product, since the valve has already closed. The user can press quite normally on the pusher, without worrying about the length of his support. It is only the speed of support that could marginally influence the duration of the distribution.
• the dispensing nozzle may comprise an axial bearing flange and the limited thrust member may comprise at least one axial bearing profile which selectively engages the axial bearing flange for drive the dispensing nozzle on its limited axial stroke.
• the end of the limited axial stroke is characterized by the disengagement of the axial bearing profile of the axial bearing flange.
• the axial bearing profile is engaged against the axial bearing flange only during the limited axial stroke.
• the thrust release member may comprise cam means for moving said at least one axial bearing profile radially outwardly to release the axial bearing flange.
• said at least one axial support profile may be formed on an elastically deformable tab.
• the cam means may comprise a conical surface on which the elastically deformable tab slides while deforming radially outwardly, at least until the axial bearing flange is released from the at least one axial bearing profile. The support profile, while pressing axially on the support flange then moves outward under the stress of the conical surface that deforms the elastic tab until the flange escapes the profile. From this moment, the dispensing nozzle is returned to its rest position by the internal spring of the valve.
• the conical surface may be formed by a trim piece which is fixedly mounted on the fluid reservoir, and which advantageously guides the pusher in its axial displacement.
• the dispensing head further comprises a return spring for returning the pusher and the limited thrust member to an initial position, this return spring being advantageously formed by the limited thrust member.
• This return spring can possibly be dispensed with in the case where the elasticity of the elastic lug (s) is sufficiently powerful.
• said at least one axial bearing profile may be situated at an axial distance from the axial bearing flange, when the pusher and the limited thrust member are in the initial position and the dispensing nozzle in the rest position, so that the pusher and the limited thrust member performs an initial dead stroke before said at least one axial bearing profile comes into contact with the axial bearing flange.
• the limited thrust member may comprise a plurality of elastically deformable tabs separated by axial slots, each elastically deformable tab internally forming an axial bearing profile, advantageously in the form of a shoulder oriented downwards.
• the dispensing nozzle comprising an axial section having a connecting end connected to the valve and forming the axial bearing flange, the dispensing nozzle advantageously comprising a transverse section forming the dispensing orifice.
• the fluid reservoir comprises a flexible pouch pressurized by an external gas. It is then in the case of a "Bag on Valve", which is particularly advantageous with the present invention, because the residual pressure in the flexible bag is still high (about 3 bar), when it is almost empty. Indeed, this residual pressure makes it possible to generate a dose of fluid product which is substantially identical or similar to the fluid dose when the bag is full with 8 bar pressure. With a conventional aerosol with propellant mixed with the fluid to be dispensed, the residual pressure is too low to generate an acceptable dose.
• the spirit of the invention lies in the fact of decoupling the pusher (on which one presses) of the piece (dispensing nozzle) which actuates directly the valve to release it at a given moment where the stroke of the pusher for the valve can be closed independently of the pressing force exerted on the pusher. The pusher can then be fully depressed while the valve is closed again. So we need temporary pushing means for driving the dispensing nozzle and release means for stopping the drive of the dispensing nozzle.
• FIG. 1 is an exploded perspective view of a dispenser according to one embodiment of the invention
• FIGS. 2a, 2b and 2c are perspective views at different angles of the limited thrust member implemented in the dispenser of FIG. 1, and
• FIGS. 3a, 3b, 3c, 3d, 3e, 3f and 3g are vertical cross-sectional views through the dispenser of FIG. 1 illustrating an operating cycle of the dispenser.
• the dispenser of FIG. 1 comprises two distinct subassemblies, namely a fluid reservoir 1 and a dispensing head 3.
• the dispensing head 3 can be completed with a removable protective cover 8.
• the fluid reservoir 1 comprises, in this non-limiting embodiment, a rigid outer container 12 enclosing a flexible bag 1 1.
• the outer container 12 is provided with a mounting cup 21 on which a valve 2 is mounted.
• flexible bag 1 1 is sealingly attached to the valve 2.
• the flexible bag 12 is pressurized by means of a gas G which is present between the can 12 and the bag 11. Initially, when the bag 1 1 is full , the gas G may be at a pressure of the order of 8 to 12 bar, and when the bag 1 1 is empty or almost empty, the gas G may still be at a pressure of about 2 to 5 bar.
• This fluid reservoir 1 is often called "bag on valve", in that the flexible bag 1 1 is (directly or indirectly) mounted on the valve 2. It should be noted that there is no propellant inside the bag 1 1. Alternatively not shown, it is also possible to use a fluid reservoir 1 equipped with a valve 2, but the tank contains a mixture of fluid and propellant.
• the valve 2 comprises a receiving housing 22 for the dispensing nozzle 4, and a seal 23 which can seal with this dispensing nozzle 4.
• the valve 2 also comprises a return spring 24 which urges it into a closed state.
• the dispensing head 3 here comprises four constituent elements, except the removable protective cover 8, namely a dispensing nozzle 4, a pusher 5, a limited thrust member 6 and a covering piece 7. All these parts can be made by injection / molding of suitable plastic material.
• the pusher 5 and the covering part 7 may optionally be made of another material, such as metal.
• the dispensing nozzle 4 is the part which makes it possible to convey the fluid product coming from the valve 2 to a dispensing orifice 41, at the level of which the fluid product leaves the dispenser, for example in the form of foam, of jet , spray, cord or hazelnut.
• the dispensing nozzle 4 firstly comprises a connecting end 43 which is sealingly engaged in the housing 22 of the valve 2, being surrounded by the seal 23.
• This connecting end 43 is part of a section axial 44 which forms on its outer periphery an axial bearing flange 46 which protrudes outwards. It can thus be said that this axial bearing flange 46 forms an upwardly directed shoulder.
• the dispensing nozzle 4 also comprises a transverse section 45 which extends radially outwards from the upper end of the axial section 44.
• the axial section 44 and the transverse section 45 are traversed by a supply duct 42 which defines at its downstream end the dispensing orifice 41.
• the transverse radial section 45 extends substantially at right angles to the axial section 44.
• the radial section 45 could have other directions, however.
• the dispensing orifice 41 preferably opens laterally.
• the pusher 5 is a cup-shaped part comprising an upper support wall 51 located on the X axis and a peripheral skirt pierced with a notch 52.
• the pusher 5 also comprises a mounting sleeve 56 which extends towards the low inside the bucket.
• This socket 56 has a perfectly or partially cylindrical shape.
• the pusher 5 comprises an external attachment profile 53, whose function will be given below.
• the pusher 5 does not act directly on the dispensing nozzle 4, but via the limited thrust member 6, which is secured to the pusher 5 via a chimney 65 in engagement with the mounting sleeve 56.
• the pusher 5 and the limited thrust member 6 could be made in one piece, but for reasons of ease of molding, they are made separately and then reported on. one on the other in a definitive way.
• the limited thrust member 6 also comprises a ring 60 which extends downward, substantially in the extension of the chimney 65.
• This ring 60 comprises several tabs elastically deformable 61 which are separated by axial slots 61 a.
• Each tab 61 internally forms an axial bearing profile 62, in the form of a shoulder oriented downwards.
• Each lug 61 also defines a sliding free end 63.
• the limited thrust member 6 also comprises spring blades 64, which are here three in number.
• the blades 64 extend helically around the ring 60. These blades 64 can be replaced by a conventional spring.
• this dressing part 7 comprises an outer jacket 71 which is pierced by a window 72 for the passage of the dispensing nozzle 4.
• this jacket 71 may comprise a profile for the attachment of the pusher 5 at its level. fastening profile 53.
• the covering part 7 comprises also an annular mounting housing 73 in which is received the hemmed edge of the cup 21. The trim piece 7 then extends radially inwardly forming an annular flange 23, then a conical surface 75.
• FIG. 3a it can be seen in which manner the different constituent elements of the dispensing head 3 are arranged.
• the axial section 44 of the dispensing nozzle 4 extends inside the crown 60. 62 are located at a short distance axially above the bearing flange 46.
• the free sliding ends 63 are arranged at an axial distance from the conical surface 75.
• the transverse section of the dispensing tip 4 is extends through the indentation 52 of the pusher 5 and through the window 72 of the covering part 7. It may also be noted that the leaf springs 64 bear against the annular flange 74 of the covering part 7.
• FIG. 3a corresponds to a rest position, the valve 2 being closed, the dispensing endpiece 4 pushed back to the maximum by the spring 24 of the valve 2 and the pusher 5 also pushed as far as possible by the leaf springs 64.
• the surface upper support 51 of the pusher 5 can even protrude slightly beyond the dressing part 5.
• the distribution of fluid product occurs only in the driving phase of the dispensing nozzle 4 until its release, which marks the closing of the valve 2 and the end of the distribution.
• the user when pressing on the support surface 51 of the pusher 5, does not realize the progress of the various phases of written above. It naturally and instinctively supports the pusher 5, so that there is no downtime between the different phases described above.
• the drive of the dispensing nozzle 4 by the limited thrust member 6 operates only on a part of the total stroke of the pusher 5.
• the proportion of the stroke corresponding to the drive of the dispensing nozzle 4 can be adjusted by varying the length of the tabs 61 and the inclination of the conical surface 75.
• the radial projection of the profiles 62 also influences the length of the driving stroke. The shortness of the distribution therefore depends on the stroke length corresponding to the driving of the dispensing nozzle 4.
• a fluid dispenser valve which by definition provides a continuous dispensing of fluid product
• a pseudo pump dispenser in that the fluid dispensing is automatically completed, as soon as when pushing the push button all the way down.

Landscapes

• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Nozzles (AREA)
• Closures For Containers (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=62597621

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (1)

Citations (3)

Family Cites Families (2)

• 2018
  • 2018-02-20 FR FR1851437A patent/FR3078061B1/fr active Active
• 2019
  • 2019-02-15 CN CN201980013865.2A patent/CN111788125B/zh active Active
  • 2019-02-15 WO PCT/FR2019/050339 patent/WO2019162597A1/fr unknown
  • 2019-02-15 EP EP19714709.3A patent/EP3755645B1/fr active Active

Patent Citations (3)

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