EP0478395B1 - Verfahren zum Entleeren des Steigrohres und/oder des Ventilinnenraums eines unter Druck stehenden Behälters sowie zugehöriger Behälter - Google Patents

Verfahren zum Entleeren des Steigrohres und/oder des Ventilinnenraums eines unter Druck stehenden Behälters sowie zugehöriger Behälter Download PDF

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Publication number
EP0478395B1
EP0478395B1 EP19910402125 EP91402125A EP0478395B1 EP 0478395 B1 EP0478395 B1 EP 0478395B1 EP 19910402125 EP19910402125 EP 19910402125 EP 91402125 A EP91402125 A EP 91402125A EP 0478395 B1 EP0478395 B1 EP 0478395B1
Authority
EP
European Patent Office
Prior art keywords
valve
dip tube
container
propellant
polymer material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19910402125
Other languages
English (en)
French (fr)
Other versions
EP0478395A3 (en
EP0478395A2 (de
Inventor
Pierre Lasserre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOreal SA
Original Assignee
LOreal SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LOreal SA filed Critical LOreal SA
Publication of EP0478395A2 publication Critical patent/EP0478395A2/de
Publication of EP0478395A3 publication Critical patent/EP0478395A3/fr
Application granted granted Critical
Publication of EP0478395B1 publication Critical patent/EP0478395B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D83/32—Dip-tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/003—Adding propellants in fluid form to aerosol containers

Definitions

  • the present invention relates to a method for purging the dip tube and / or the internal space of a pressurized container valve and a corresponding container, in particular an aerosol generating container.
  • pressurized containers have a valve for dispensing the liquid phase they contain; this valve is provided with a dip tube which extends in the liquid phase to the bottom of the container; the liquid phase consists of the product to be dispensed and a propellant in liquefied form.
  • the propellant is, in known manner, made up of at least one alkane, such as n-butane, isobutane, propane, isopentane, or at least one propellant whose density is less than 1 g / cm3 immiscible in the formula.
  • a chain for example a foaming composition
  • a pressurized container When packaging a chain, for example a foaming composition, in a pressurized container, the procedure is generally carried out as described below.
  • a dose of the composition to be dispensed is first introduced into the empty and opened container.
  • the valve cup which carries the dispensing valve, is then crimped onto the upper edge of the container containing the composition.
  • the liquefied propellant so as to pressurize the container.
  • the device thus conditioned is then provided with a dispensing head enabling the valve to be actuated.
  • the object of the present invention is a method for purging the dip tube from a pressurized container in which the property of certain polymers is used to swell in the presence of propellants, while retaining their overall shape without sagging, the propellant being in solution or absorbed in the polymer.
  • the present invention therefore relates to a method for purging the dip tube and / or the internal valve space of a pressurized container containing a product to be dispensed and a propellant in liquid form, said container containing a liquid phase surmounted by a vapor phase, the dip tube and / or the valve passing through said vapor phase, the dip tube immersing in the liquid phase, characterized in that the interior of the dip tube and / or the internal space of the valve is placed at least partially in contact with an element made of polymer material capable of swelling under the action of the propellant in liquid form, the element of polymer material being at least partially in contact with the vapor phase outside the valve, so that the polymer material absorbs the propellant contained in the dip tube and / or the internal space of the valve.
  • the polymeric material swells while remaining solid, that is to say without having a tendency to creep or flow.
  • the polymeric material pumps, in a way, the liquid propellant contained in the internal space of the valve and in the dip tube and it is thought that the liquid propellant then diffuses at least partially in the gas phase.
  • the internal space of the valve and the dip tube gradually empties of the pure liquid propellant, which is replaced by the liquid phase to be ejected.
  • the propellant can be an alkane such as n-butane, isobutane, propane or isobutane, or a mixture of these alkanes.
  • the polymeric material can be natural or synthetic rubber. It is preferably a silicone rubber, but one could also use a copolymer of isoprene and styrene, a polyisobutylene, a butadiene-styrene copolymer or a polynorbornene.
  • a silicone rubber is capable of absorbing up to twice its volume of liquefied isobutane when it is immersed in said liquefied isobutane: 1 g of silicone rubber can therefore absorb 1.5 g of isobutane.
  • the present invention also relates to a pressurized container for implementing the method described above comprising a valve provided with a dip tube and containing a product to be dispensed and a propellant in the form of liquid, said container containing a liquid phase. surmounted by a vapor phase, characterized in that the interior of the dip tube and / or the internal space of the valve is (are) at least partially in contact with an element made of polymer material capable of absorbing the propellant in liquid form, the element made of polymer material being at least partially in contact with the vapor phase.
  • the dip tube can be made, at least partially, of polymer material capable of absorbing the liquid propellant.
  • the polymeric material is preferably arranged in the form of a sleeve surrounding the dip tube and / or a tubular part of the valve and communicating with the interior of the dip tube and / or the internal space of the valve by at least an opening in the wall of the dip tube and / or the wall of the valve.
  • the sleeve is preferably disposed entirely at the vapor phase when the container is full.
  • the valve used is an additional gas intake valve, the additional gas intake opening being covered by a sleeve of absorbent polymeric material.
  • the valve 1 of the container according to the invention is an additional gas intake valve, the additional gas intake opening 2 of which is closed by a sleeve 3 in silicone rubber.
  • the valve 1 carries a dip tube 22; it is crimped onto a valve cup 4.
  • the cup 4 is fixed to the upper edge of a container (not shown) which contains the product to be dispensed and the propellant in the form of a liquid phase L and a vapor phase V.
  • the valve 1 consists of two parts: a movable part 5 and a fixed part 6 having externally a generally cylindrical shape.
  • the fixed part 6 contains two chambers 7 and 8.
  • the movable part 5 is constituted by a tubular element 9 in a thermowell open at one of its ends on the outside and closed at its other end, at the level of a flange 10 ; the collar 10 carries, on its face opposite to the tubular element 9, a rod 11 facing the container, the cross section of which has an X shape.
  • openings 23 are formed for the ejection of the product to be dispensed.
  • the widened upper rim 12 of the fixed part 6 is covered by the crimping 13 of the valve cup 4, a seal 14 being disposed between the crimping and the upper face of said widened rim 12.
  • the chamber 7 is formed in the upper part of the fixed part 6; it is closed at its lower part by a bottom 15 provided with an axial opening 16, which places the chamber 7 in communication with the chamber 8.
  • the movable part 5 slides axially in the chamber 7 between a position where the flange 10 is in contact with the seal 14 and a position, where the underside of the rod 11 comes close to the opening 16 of the bottom 15.
  • the movable part 5 can be pressed by pressure on the tubular element 9 and return to its initial position (shown in the drawing) under the action of a spring 17 which surrounds the rod 11 and rests, on the one hand, under the collar 10, on the other hand, on the bottom 15 of the chamber 7 in an annular groove 18 formed for this purpose.
  • the rod 11 constitutes a guide for the spring 17.
  • the driving-in limit of the movable part 5 corresponds to the complete compression of the spring 17.
  • Chamber 8 is open towards the container; it consists of two cylindrical parts: a part of smaller diameter 19 located near the bottom 15 of the chamber 7, part into which the opening 16 opens which puts it in communication with the chamber 7 and the orifice of the socket additional gas 2, and a portion of larger diameter 20 opening towards the container.
  • the wall 21 of the fixed part 6 is thinned and a dip tube 22 made of flexible plastic material is force fitted on this thinned wall.
  • the sleeve 3 of silicone rubber is placed in an annular housing in the outer wall of the fixed part 6 of the valve 1 and covers the orifice of the additional gas outlet 2. This sleeve 3 and the additional gas outlet 2 are, after filling the container, entirely located in the vapor phase V.
  • the product to be dispensed for example a foaming product
  • the valve cup 4 carrying its valve 1 provided with the sleeve is fixed on the container.
  • Liquid isobutane is then introduced as propellant through valve 1 and a dispensing head (not shown) is fixed on said valve.
  • liquid isobutane remains in the chambers 7 and 8 and in the dip tube 22.
  • Said isobutane is gradually absorbed by the silicone rubber of the sleeve 3 and returned by diffusion at least partially into the container at the vapor phase V.
  • Tests have shown that in a 200 ml container with a dip tube about 15 cm long, and 3.1 mm in internal diameter, all the liquid isobutane contained in the dip tube 22 and in the chambers 7 and 8 of the valve 1 (chambers with a free internal space of about 0.4 cm3) could be absorbed in four hours, when using an intake orifice additional gas 2 with a diameter of 1 mm.
  • the valve then operates in a known manner.
  • the moving part 5 of the valve is pressed, which crushes the spring 17.
  • the liquid phase contained in the container passes through the openings 16 and 23 and is expelled towards the outside.
  • the spring 17 causes the movable part 5 to rise and the openings 23 are blocked by the seal 14.
  • the sleeve 3 of silicone rubber keeps closed the additional gas intake 2 which, according to this embodiment, therefore does not allow the introduction, into the valve, of gas coming from the vapor phase V during the valve operation.

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)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)

Claims (8)

  1. Verfahren zum Reinigen des Tauchrohrs (22) und/oder des Innenraums (7,8) des Ventils (1) eines Druckbehälters, der ein abzugebendes Produkt und ein Treibmittel in flüssiger Form enthält, wobei der Behälter eine flüssige Phase (L) enthält, über der sich eine Dampfphase (V) befindet und wobei das Tauchrohr (22) und/oder das Ventil (1) durch die Dampfphase (V) führen, wobei das Tauchrohr (22) in die flüssige Phase (L) eintaucht,
    dadurch gekennzeichnet, daß
    das Innere des Tauchrohrs (22) und/oder der Innenraum (8) des Ventils (1) wenigstens teilweise mit einem Bauteil (3) aus einem Polymerwerkstoff in Kontakt gebracht wird, der unter der Einwirkung des flüssigen Treibmittels ein gewisses Quellvermögen besitzt, wobei das Bauteil (3) aus dem Polymerwerkstoff wenigstens teilweise mit der Dampfphase (V) dergestalt in Kontakt steht, daß der Polymerwerkstoff das in dem Tauchrohr (22) und/oder dem Innenraum (7,8) des Ventils (1) enthaltene Treibmittel absorbiert.
  2. Verfahren gemäß Anspruch 1, dadurch gekennzeichnet, daß der Polymerwerkstoff ein natürlicher oder synthetischer Kautschuk ist.
  3. Verfahren gemäß Anspruch 2, dadurch gekennzeichnet, daß der Polymerwerkstoff ein Silikonkautschuk ist.
  4. Druckbehälter zur Durchführung des Verfahrens gemäß einem der Ansprüche 1 bis 3, der ein mit einem Tauchrohr (22) versehenes Ventil (1) aufweist und ein abzugebendes Produkt und ein Treibmittel in flüssiger Form enthält, wobei der Behälter eine flüssige Phase (L) enthält, über der sich eine Dampfphase (V) befindet,
    dadurch gekennzeichnet, daß
    das Innere des Tauchrohrs (22) und/oder der Innenraum (7,8) des Ventile (1) wenigstens teilweise in Kontakt mit einem Bauteil (3) aus einem Polymerwerkstoff steht (stehen), der imstande ist, das flüssige Treibmittel zu absorbieren, wobei das Bauteil (3) aus dem Polymerwerkstoff sich wenigstens teilweise in Kontakt mit der Gasphase befindet.
  5. Behälter gemäß Anspruch 4, dadurch gekennzeichnet, daß das Tauchrohr (22) wenigstens teilweise aus einem Polymerwerkstoff besteht, der imstande ist, das flüssige Treibmittel zu absorbieren.
  6. Behälter gemäß Anspruch 4, dadurch gekennzeichnet, daß das Bauteil aus dem Polymerwerkstoff eine Hülse (3) ist, die das Tauchrohr (22) und/oder einen röhrenförmigen Abschnitt des Ventile (1) umgibt, wobei die Hülse (3) mit dem Inneren des Tauchrohrs (22) und/oder dem Inneren des Ventils (1) durch wenigstens eine in der Wand des Tauchrohrs (22) und/oder der Wand des Ventils (1) ausgesparte Öffnung (2) kommuniziert.
  7. Behälter gemäß Anspruch 6, dadurch gekennzeichnet, daß die gesamte Hülse (3) in Höhe der Dampfphase (V) angeordnet ist, wenn der Behälter voll ist.
  8. Behälter gemäß einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, daß das Ventil (1) ein Ventil mit zusätzlicher Gasentnahme (2) ist, wobei die Öffnung der zusätzlichen Gasentnahme von einer Hülse (3) aus einem Polymerwerkstoff bedeckt ist, der imstande ist, das flüssige Treibmittel zu absorbieren.
EP19910402125 1990-09-13 1991-07-30 Verfahren zum Entleeren des Steigrohres und/oder des Ventilinnenraums eines unter Druck stehenden Behälters sowie zugehöriger Behälter Expired - Lifetime EP0478395B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9011312A FR2666789B1 (fr) 1990-09-13 1990-09-13 Procede pour purger le tube plongeur et/ou l'espace interne d'une valve de recipient pressurise et recipient correspondant.
FR9011312 1990-09-13

Publications (3)

Publication Number Publication Date
EP0478395A2 EP0478395A2 (de) 1992-04-01
EP0478395A3 EP0478395A3 (en) 1992-05-20
EP0478395B1 true EP0478395B1 (de) 1994-11-30

Family

ID=9400291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910402125 Expired - Lifetime EP0478395B1 (de) 1990-09-13 1991-07-30 Verfahren zum Entleeren des Steigrohres und/oder des Ventilinnenraums eines unter Druck stehenden Behälters sowie zugehöriger Behälter

Country Status (4)

Country Link
EP (1) EP0478395B1 (de)
DE (1) DE69105436T2 (de)
ES (1) ES2067181T3 (de)
FR (1) FR2666789B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2699635B1 (fr) * 1992-12-21 1995-02-17 Oreal Valve de distribution et distributeur équipé d'une telle valve.
US6776313B2 (en) 2002-08-30 2004-08-17 L'oreal Valve for a pressurized receptacle, and a receptacle fitted therewith
FR2843950B1 (fr) * 2002-08-30 2004-11-19 Oreal Valve pour recipient pressurise et recipient ainsi equipe
GB2466720A (en) * 2009-01-06 2010-07-07 Reckitt & Colmann Prod Ltd Aerosols with Improved Anti-Corrosion Properties

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1293360A (fr) * 1960-06-20 1962-05-11 Revlon Pulvérisateur perfectionné pour aérosols

Also Published As

Publication number Publication date
FR2666789A1 (fr) 1992-03-20
DE69105436T2 (de) 1995-07-06
DE69105436D1 (de) 1995-01-12
FR2666789B1 (fr) 1992-12-04
ES2067181T3 (es) 1995-03-16
EP0478395A3 (en) 1992-05-20
EP0478395A2 (de) 1992-04-01

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