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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
  • B65D83/42—Filling or charging means
  • B65D83/425—Delivery valves permitting filling or charging

Definitions

• the present invention relates to the pressure packaging industry. It relates more particularly to a valve comprising a reduced number of components.
• the search for a lowering of the cost of the valves has led to the design of valves devoid of return springs and using the elasticity of a shutter to combine the functions of shutter and of valves. Descriptions of such valves are to be found in particular in United States patents Nos. 2,913,749 and 3,282,474, as well as in patent of the Federal Republic of Germany No. 2,249,891. More recently, valves of this type have been the subject of patent applications in the Federal Republic of Germany No. 32 38 203 and 32 38 271.
• the object of the invention is to provide a valve of this type having numerous advantages over conventional valves. In addition to its qualities of operation and reliability, it operates when the container is held vertically in the usual way, while most of the valves of this conventional type only operate with the container turned upside down. In addition, the valve according to the invention allows the admission of additional gas into the dispensed product.
• the subject of the invention is a simplified valve, for the distribution of fluid products packaged in a pressurized container, comprising a cup of rigid material, sealingly fixed on the neck of the container, and a valve shutter of flexible and elastic material, housed in an axial tubular chimney open from the cup, the obturator being hollowed out with a first blind tubular axial channel opening outside by an orifice surrounded by a tubular edge, for tightly fitting the obturator to the end of the external chimney to the container, the shutter having, in the vicinity of the blind bottom of the first channel, an outer diametral annular widening forming a first valve cooperating by the elasticity of the shutter with a seat formed by the end of the chimney towards the outside of the container, the lateral wall of the shutter being pierced with at least one radial passage connecting the interior of the first channel to a first space delimited between e the internal wall of the chimney and the external wall of the shutter between the flange and the first valve, the first channel receiving, in an
• the second valve can be pierced with at least one calibrated orifice for the passage of gas making the interior of the container communicate with the second space.
• the peripheral peripheral part of the second valve bears elastically against a shoulder of the cup directed towards the interior of the container, and limiting an axial tubular prolongation of the chimney, of internal diameter - greater than the outside diameter of the first valve.
• the second valve has a peripheral marginal portion beaten in a skirt towards the inside of the container and bearing elastically against an axial cylindrical inner wall of the cup extending the chimney and of greater internal diameter. the outside diameter of the first valve.
• FIG. 1 is a schematic view in elevation and in diametral section of a valve according to the invention, in the closed position;
• Figure 2 is a view similar to that of Figure 1 of the same valve, when filling under pressure of the container, on which it is mounted;
• Figures 3 and 4 are views similar to those of Figures 1 and 2 of another embodiment.
• the same numerical references designate the corresponding valve parts.
• the valve shown in FIGS. 1 and 2 essentially comprises a cup 1 made of metal and a shutter 2 made of flexible and elastic material, such as a rubbery polymer.
• the cup which is of the so-called "thumb” type, widely used in the aerosol industry, has an axial chimney 3 in which the shutter is housed.
• the shutter is hollowed out with a first blind tubular axial channel 5, opening to the outside through an orifice surrounded by an annular rim 4 which bears in leaktight manner against the outside end of the chimney 3.
• the shutter 2 extends inside the chimney 3 by a cylindrical part until an annular widening 6 constituting a first valve which comes to bear elastically against a shoulder 7 limiting the chimney 3 towards the interior of the container 25.
• the cylindrical part of the shutter 2, between the rim 4 and the valve 6, has annu ⁇ lar projections 27 ensuring a good seal, and mena ⁇ gaging a space 21 between the wall of the shutter 2 and the wall of the chimney 3.
• Two radial holes 8 and 9 communicate the space 21 with the interior 5 of the axial channel.
• either the tubular end of the tail of a diffusing plunger 11 or a nozzle 10 for injecting pressurized product to fill the container 25 through the valve is introduced as desired.
• the tubular tail of the push button 11 communicates with the interior of the ca ⁇ nal 5 by a radial bore 28, or also by a slot of the conventional type, not shown.
• the interior of the injection nozzle 10 communicates with the interior of the channel 5, by two radial orifices 29.
• the blind bottom 26 has an axial protuberance. 30 which is inserted into the end of the nozzle 10 or of the stem of the pusher-diffuser 11, to ensure both ' good lateral support and good sealing.
• the shutter 2 has an axial extension 12 towards the interior of the container 25.
• This extension is formed by a second blind axial channel 13 which opens out inside the container and receives the end of a tube 23- plunging to the bottom of the container and supplying the liquid by two radial holes 17, 18 in a space 20 comprised between the first valve 26 and a second valve 14.
• This second valve 14 has an inverted sectional shape whose marginal edge 15 abuts elastically against a shoulder 22 of the cup 1, extending a part ' ubulaire 24.
• the tubular part 24 has an inner diameter greater than the outside diameter of the valve 6 in rest position.
• the second valve 14 has a hole calibrated 19 making the interior of the container communicate with the aforementioned space 20.
• the shutter 2 When filling the container 25 in pressurized product injected by the nozzle 10, as shown in FIG. 2, where the path of the injected product is indicated by arrows, the shutter 2 extends from the rim 4, under the effect, on the one hand, of the thrust exerted on the injection nozzle
• valves 6 and 14 press elastically against their respective seats 7 and 22, thus ensuring a double seal between the interior of the container and the exterior.
• the second valve 14 slides on its seat 22 while maintaining the seal.
• the product reaches, via the dip tube 23, in the channel 13 then passes through the orifices 17, 18, in the space 20 where it mixes with gas arriving from the interior of the container, through the calibrated orifice. 19.
• the mixture then passes between the valve 6 and its seat 7 to reach the tubular tail 11 of the pusher-diffuser, by the radial channels 8 and, the interior of the channel 5 and the radial passage 28.
• the second valve 14 is in the form of a flange terminated by a skirt 16, which normally carries in a sealed manner against the tubular cylindrical wall 24 extending the chimney axially 3.
• This skirt 16 of the second valve 14 thus works in the same way than a piston in a cylinder. It ensures sealed contact of the edge of the second valve 14 with the wall 24 of the cup 1 in all circumstances, except during filling under pressure, as indicated in FIG. 4.
• the cup 1 is crimped onto the neck of the container 25. It could also bi n be snapped onto the neck of the container and be made of rigid plastic rather than metal .

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)

Applications Claiming Priority (2)

Publications (2)

Family

ID=9306897

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (2)

Family Cites Families (3)

• 1984
  • 1984-08-08 FR FR8412517A patent/FR2568975B1/fr not_active Expired
• 1985
  • 1985-07-24 WO PCT/FR1985/000201 patent/WO1986001181A1/fr not_active Ceased
  • 1985-07-24 DE DE8585903667T patent/DE3561193D1/de not_active Expired
  • 1985-07-24 EP EP19850903667 patent/EP0190210B1/de not_active Expired
  • 1985-07-24 AU AU46097/85A patent/AU4609785A/en not_active Abandoned
  • 1985-08-01 ES ES1985288493U patent/ES288493Y/es not_active Expired

Non-Patent Citations (1)

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