EP1651356B1 - Emballage de distribution - Google Patents

Emballage de distribution Download PDF

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Publication number
EP1651356B1
EP1651356B1 EP04763619A EP04763619A EP1651356B1 EP 1651356 B1 EP1651356 B1 EP 1651356B1 EP 04763619 A EP04763619 A EP 04763619A EP 04763619 A EP04763619 A EP 04763619A EP 1651356 B1 EP1651356 B1 EP 1651356B1
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EP
European Patent Office
Prior art keywords
pump
container
seal
annular
manner
Prior art date
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Application number
EP04763619A
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German (de)
English (en)
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EP1651356A1 (fr
Inventor
Karsten BÖHNISCH
Bernhard Jasper
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Aptar Dortmund GmbH
Original Assignee
Seaquist Perfect Dispensing GmbH
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    • 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
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/026—Membranes separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • 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
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • 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
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container

Definitions

  • the invention relates to a dispensing pack according to the preamble of patent claim 1 and the use of a seal in a dispensing pack according to patent claim 10.
  • DE-A-0 342 651 B1 is a hand-operated metering pump described with the features contained in the preamble of claim 1.
  • the ventability of a container equipped with such a pump provided by standard pumps of this known type encounters difficulties in such cases in which the medium to be dispensed contained in the container is highly viscous, such as creams, and to contact with the ambient air to prevent malfunction of the pump and contamination of the medium by noxious germs or dirt particles contained in the air.
  • the JP 9058750 A relates to a dispensing package comprising a container, a pump, a seal and a closure cap.
  • the container has an internal, flexible bag which is connected to the outer container.
  • the annular seal has a sealing lip which bears against a pump housing. During assembly of the pump in the filled container, an overpressure or liquid can escape by deformation of the sealing lip to the outside.
  • the EP 1050 481 A1 discloses a dispenser having a volume variable volume dispenser, a pump, an actuator, a holder and a seal.
  • the seal seals a container neck against a pump housing and the holder.
  • a device for spraying a fluid with a reusable dispensing head and a container will be described.
  • the known dispensing head has in one embodiment a closure cap with pump and actuator.
  • a volume-variable container with a sealing element which has a membrane and an annular sealing lip, closed.
  • a standard pump is disclosed which allows for the ventilation of a rigid container.
  • the invention has for its object to improve a dispensing pack of the aforementioned type so that using standard pumps, which normally allow the ventilation of a vessel equipped with such a pump, the flowable medium contained in the container do not come into contact with air and are contaminated can, so if necessary. also the amount of preservatives for the flowable medium can be reduced. In particular, the release of highly viscous media such. As the delivery of conventional cosmetics or medical creams, under exclusion of air as well as in an overhead position of the dispensing pack be possible. This task should be able to be realized by a relatively quick and easy conversion already existing assembly machines.
  • the invention is based on a dispensing pack, which consists of a metering pump and a tightly connected thereto, ventilated by the pump container.
  • the dispensing package includes a closure cap that can be attached to a neck of the container, and a cylindrical wall that encloses an axial opening that is disposed above an interior flange.
  • a holder for mounting the pump is provided within an opening of the closure cap, wherein the holder is sealingly pressed with an outer flange against an annular seal on an outer end face of the container neck through the closure cap.
  • a pump housing has a pump cylinder surrounding a pump chamber, the upper end of which has an opening and is provided at the lower end with a dip tube nipple.
  • a pump piston is sealingly slidably disposed in the pumping chamber and provided with a piston stem which projects outwardly from the pumping chamber and is provided at its outer end with an actuating and dispensing head.
  • An axial outlet passage extends through the piston shaft and the pump piston and connects the pump chamber to a discharge opening of the actuating head. Further, an inlet valve and a discharge valve for the flowable medium of the pump are assigned.
  • a helical compression spring acts on the pump piston in the direction of its rest position.
  • a volume of the container containing the flowable medium is adaptable to the decrease in the volume of the flowable medium dispensed from the container, and the seal between the container neck and the closure cap is airtight with its inner hole edge on the outside of the pump housing. This ensures that the flowable medium does not interfere with the air and bacteria contained therein and / or other contained therein, harmful to the medium to be dispensed components such. As oxygen or dirt particles, come into contact and can be contaminated.
  • a further improvement of the seal can be achieved in that the inner hole edge is part of a ring lip.
  • the thickness of the annular sealing disc is reduced towards the outer end of the annular lip.
  • the medium within the container may be enclosed by a bag of flexible material, the upper opening edge of which is sealed to the wall of the container, while in a space between the inside of the container wall and the outside of the bag air is contained under atmospheric pressure , It is particularly preferred to form the bag and the container in one piece. This is done very advantageous in that the opening edge of the bag is molded onto the lower end of the container neck. Due to the flexibility of the bag, the bag collapses or shrinks in the mass in which the flowable medium is dispensed from the bag by means of the pump.
  • the container may have a cylindrical inner wall and be open at the lower end, in which a tow piston against the inner wall of the container is sealingly and axially movably inserted, which depends on the discharged amount of the medium and the suction pressure applied to the medium is displaceable in the direction of the pump.
  • a tow piston against the inner wall of the container is sealingly and axially movably inserted, which depends on the discharged amount of the medium and the suction pressure applied to the medium is displaceable in the direction of the pump.
  • the missing dip tube has advantages especially in the event that the flowable medium is highly viscous, such as. As in skin or sun creams, but also in medical creams. At the same time, the advantage is associated with the dispensing pack in any other position than the upright position, for. B. in overhead position "to use.
  • Fig. 1 to 4 are shown in longitudinal section a plurality of components of the dispensing package, which are mainly made of a relatively hard plastic, such as polypropylene. These parts are rotationally symmetrical and form the dispensing pack with respect to a central longitudinal axis 0-0.
  • the dispensing package consists of a metering pump 20 and a sealed container 26 to which a bag 28 of flexible material is sealed, containing a flowable medium 29, preferably a sprayable liquid, such as normal or medicinal skin cream, the quality can be contaminated by contact with air, for example by bacteria contained therein, so that the dispensing package according to the invention to prevent such access of air to the medium contained in the container and to reduce the amount to be added to the medium 29 preservatives.
  • a closure cap 22 is secured by a conventional screw thread 25 on a neck 21 of the container 26.
  • the closure cap 22 has at the upper end a wall 31 with an inner cylindrical opening 32, which is arranged above an inner flange 34.
  • a holder 38 is provided, which has a cylindrical outer wall 40 and disposed within the opening 32 of the closure cap 22 and is provided at the lower end with an outer flange 42.
  • This outer flange 42 is sealingly pressed against an annular seal 41 on an outer end face 27 of the container neck 21 through the inner flange 34 of the closure cap 22.
  • the function of this seal 41 will be referred to below.
  • the cap 22 may also, as is known, by bouncing, welding, gluing o. The like. Be connected to the container neck 21.
  • a pump housing 48 is provided with a pump cylinder 43 provided below the annular seal 41 with a small vent 51 which connects the interior volume of the pouch 28 to the pump chamber 80 and serves to vent the pump cylinder 43 during a first actuation of the dosing pump 20 ,
  • the pump cylinder 43 surrounds a pump chamber 80 which is open at the top or the outside.
  • a cylindrical inner wall 72 of the holder 38 engages coaxially in the upper opening of the pump chamber 80 and is connected thereto at the upper end by an annular end wall 64.
  • the pump housing 48 is provided at the upper end with an outwardly projecting annular flange 50 which is inserted into an annular groove 62 at the inner, upper end of the holder 38 latching.
  • a dip tube nipple 30 is formed, through which the flowable medium 29 is sucked within the bag 28 made of flexible material.
  • the opening of the dip tube nipple 30 is exposed on purpose to allow the suction of highly viscous media such as creams, as well as a discharge function of the pump in an overhead position of the dispensing pack.
  • the bag 28 tightly encloses the medium 29 by its upper opening edge 33 with the wall of the container 26, in the present case with the lower end of the container neck 21, is sealed.
  • the upper end of the bag 28 is molded integrally to the lower end of the container neck 21 during the manufacture of the container 26 in the plastic injection molding process.
  • an annular space 35 is provided which contains ambient air which is at atmospheric pressure.
  • a pump piston 45 is sealingly slidably mounted in the pump cylinder 43 and provided with a hollow cylindrical piston skirt 47 which projects outwardly from the pump chamber 80 through a cylindrical opening 23 in the end wall 64 of the holder 38 and at its outer end with an actuating and dispensing head 90 is provided.
  • An axial outlet channel 98 extends through the piston skirt 47 and the pump piston 45 and connects the pump chamber 80 with a discharge opening 92 of the actuating head 90.
  • At the upper and lower ends of the pump piston 45 are each an annular sealing lip 102, 103 integrally formed with the elastic bias tight against the inner wall of the pump cylinder 43.
  • the pump piston 45 is in its rest position with its upper end at a lower end 73 of the cylindrical inner wall 72 of the holder 38 sealingly.
  • the pump housing 48 is provided with a bottom 49, from which a cylindrical tubular feed port 120 projects coaxially with the dip tube nipple 30 into the pump chamber 80.
  • An inlet valve 66 is designed as a two-part differential piston and consists of a valve body 150 below the pump piston 45 and a sealing sleeve 190 arranged below the valve body 150, which is provided with guide ribs 250 arranged at equal circumferential angular spacings ( Fig. 2 . 6 and 7 ).
  • the valve body 150 and the sealing sleeve 190 are between the Pump piston 45 and the supply port 120 in the pump chamber 80 axially displaceably guided.
  • the sealing sleeve 190 is limited axially displaceable relative to the valve body 150 and forms a connecting channel 54 between the pump chamber 80 and the outlet channel 98 with a valve head 170 of the valve body 150 (FIGS. Fig. 2 and 6 ) which is closed during the pumping stroke of the pump piston 45 and open at its suction stroke ( 6 and 7 ).
  • a cylindrical opening 226 is provided in the upper end of the sealing sleeve 190, which is enclosed by an inner flange 210 of the sealing sleeve 190.
  • a guide pin 230 of the valve body 150 extends coaxially through this opening 226 and is provided with longitudinal ribs 234.
  • a helical compression spring 240 whose lower end is supported on the housing bottom 49 and whose upper end on lower end surfaces 235 of the longitudinal ribs 234 of the guide pin 230, serves as a support for the inner flange 210 of the sealing sleeve 190 in the rest position of the pump piston 45 and during its suction stroke ( Fig. 2 . 6 and 7 ).
  • Fig. 5 is on an enlarged scale in the Fig. 1 to 4 A detail referred to A mirror image shown, which refers to the annular seal 41 which is clamped between the container neck 21 and the cap 22 and according to the invention with its inner hole edge 52 on the outside of the pump housing 48 is gas-tight.
  • the inner hole edge 52 is formed as a ring lip 53, whose thickness is reduced toward the inner hole edge 52.
  • the seal 41 extends from the inside of an outer, horizontally disposed annular rim 55 radially inwardly and upwardly or outwardly in the form of a truncated cone 58 in an annular space 57, of the cylindrical outer side of the pump housing 48 and the outer wall 40 of the holder 38 in the cap 22 is enclosed.
  • the seal 41 is preferably made of silicone or other elastomeric elastomeric material which is inert to the medium 29 contained in the container 26.
  • the annular flange 50 at the upper end of the pump housing 48 is provided with a vertical groove 62 which in Fig. 1 to 4 can be seen in the left half of the drawings.
  • the groove 62 forms an air outlet slot between the Pump housing 48 and the outer wall 40 of the holder 38 and cooperates with radial air channels 70 in the holder 38.
  • the upper end wall 64 of the holder 38 has a circumferential groove 68 on the underside of the holder 38.
  • the groove 68 is connected to the top of the groove 62. In a position offset by 180 ° relative to the groove 62, the groove 68 is connected to the radial air channels 70 which are provided in the underside of the upper end wall 64 of the holder 38.
  • the air channels 70 extend inwardly along the wall of the pump housing 48 into the annulus 57 which is sealed inwardly or downwardly by the seal 41.
  • the upper inner edge of the pump housing 48 is tapered upward and forms an annular channel 71 around the holder 38.
  • the space between the cylindrical inner wall 72, the piston skirt 47 and the wall of the pump chamber 80 connects an annular space 77 at the lower end of the cylindrical inner wall 72 of the holder 38 with the annular channel 71 which extends around the upper end of the pump housing 48.
  • the annular seal 41 prevents the entry of air into the bag 28 and thus contact of the flowable medium 29 contained in the bag 28 with the outside air, so that the quality of the medium 29 is maintained by the lockout of the outside air.
  • the air flows through the annular gap 23 along the inner wall 72 of the holder 38 and the pump housing 48 through the radial air channels 70 in the circumferential groove 68.
  • it is distributed in both directions around the circumference of Holder 38 about 180 °, where it then flows through the groove 62 in the annular space 57 of the pump housing 48.
  • the air is then prevented from entering the bag 28 by the annular seal 41, which abuts the pump housing 48 during the subsequent suction stroke of the pump piston 45 due to the resulting pressure difference between the interior of the bag 28 and the outside air with increased pressure.
  • the flowable medium 29 is sucked through the dip tube nipple 30 from the bag 28 into the pumping chamber 80, wherein the bag 28 shrinks increasingly to adapt to the decreasing volume of the medium 29.
  • the pump piston 45 has an enlarged bore 154, the upper end of which forms an annular valve seat 158 of an exhaust valve in the exhaust passage 98.
  • the valve body 150 is formed at the upper end to a valve plug 182 of the exhaust valve, which is tight against the annular valve seat 158 in the pump piston 45 to prevent the medium 29 from flowing out of the pump chamber 80 through the outlet channel 98.
  • the valve body 150 has a valve head 170 with an upper head surface 172 provided with radial ribs 174 ( Fig. 3 ), which are arranged at equal circumferential angular intervals, extend radially outward and protrude from the upper head surface 172.
  • the lower side of the valve head 170 is provided with an annular groove 179 (FIG. Fig. 6 ), which is trapezoidal in cross section and forms an integral part of the inlet valve 66.
  • the outer side wall of the annular groove 179 forms a valve surface 180 which tapers conically downward and outwardly to seal against the upper tapered contact surface 218 of the sealing sleeve 190.
  • the contact surface 218 is connected to the valve body 150 such that it is axially limited adjustable.
  • the valve face 180 and the conical contact surface 218 substantially form the frustoconical connection channel 54, with the inner side wall of the annular groove 179 being formed by the cylindrical guide pin 230.
  • the sealing sleeve 190 comprises a substantially cylindrical piston skirt 202 on its side facing the container.
  • the upper end of the sealing sleeve 190 has an annular Inner flange 210, the underside of which forms an annular support 211 which rests on the upper end 241 of the helical compression spring 240 when the pump piston 45 is in its upper rest position.
  • the inlet valve 66 In this rest position, the inlet valve 66 is open with its connecting channel 54 ( Fig. 6 ).
  • the inner flange 210 can be adjusted axially from its rest position to a working position in which the connecting channel 54 of the inlet valve 66 is closed.
  • the inner flange 210 extends with its support surface 211 and its top 212 at a right angle to the pump axis 0-0 as well as axially in the annular groove 179 of the valve head 170th
  • the helical compression spring 240 consists of a cross-sectionally round spring wire. It can be seen that the upper end 241 of the spring 240 bears against the end face 235 of the longitudinal ribs 234 with the inner half of the wire cross-section, ie over a contact angle of approximately 80 °. Lower longitudinal sections 236 of the longitudinal ribs 234 project only radially over approximately one third of the width of the longitudinal ribs 234.
  • a spring wire of other cross-section for example rectangular cross-section, are used, as long as the diameter of the spring wire is greater than the radial width of the longitudinal ribs 234 dimensioned, so that a part of the wire cross section, the support for the annular bearing surface 211 of Seal sleeve 190 forms.
  • an intermediate washer between the upper end 241 of the compression spring 240 and the end face 235 of the longitudinal ribs 234 may be arranged, which extends parallel to the support surface 211 and the end faces of the longitudinal ribs 234.
  • a free space 220 (FIG. Fig. 7 ), which allows the limited axial movement between the valve body 150 and the sealing sleeve 190.
  • This relative movability of the sealing sleeve 190 is selected such that the contact surface 218 of the sealing sleeve 190 abuts against the inner valve surface 180 of the outer edge 171 of the valve head 170 in the one end position of the relative movement range of the sealing sleeve 190, so that the inlet valve 66 formed by said parts is included.
  • the lower end of the sealing sleeve 190 is sized to be telescopically and sealingly displaced in close contact with the outside of the fixed tubular supply stub 120.
  • the components of the pump 20 may be made of thermoplastic materials.
  • the spring 240 is preferably made of stainless steel.
  • the pump housing 48 with the tubular feed port 120 is suitably made of polypropylene.
  • Other internal components, such as e.g. the pump piston 45, the valve body 150 and the sealing sleeve 190 or parts of these other components may be made of polyethylene to achieve a better seal.
  • the movable sealing sleeve 190 can be pressed directly onto the guide pin 230 of the valve body 150 without touching other parts, whereupon the upper end of the compression spring 240 is pressed onto the guide pin 230 and consequently the sealing sleeve 190 in a limited Extent on the valve body 150 is held axially movable.
  • the sealing sleeve 190 takes in relation to the valve head 170 in the Fig. 1 to 4 and 6 shown end position.
  • the pump piston 45 and the valve body 150 move down in the pump housing 48, compressing the compression spring 240.
  • the sealing sleeve 190 briefly follows this movement, while the inner flange 210 is supported with its annular bearing surface 211 on the compression spring 240.
  • the movement of the sealing sleeve 190 is briefly interrupted.
  • the upper end of the sealing sleeve 190 is quickly reached by the valve head 1790, so that both parts of the closed position in Fig. 7 taking.
  • valve head 170 carries the sealing sleeve 190 down with it, so that the sealing sleeve 190 is pushed telescopically and sealingly onto the tubular feed nozzle 120.
  • the resulting friction contributes to a relative pressure of the inner flange 210 on the annular groove 179, so that the connecting channel 54 between the contact surface 218 of the sealing sleeve 190 and the valve surface 180 of the valve head 170 is closed or sealed.
  • the pump chamber 80 is completely closed. By further depressing the pump piston 45, the pressure within the pump chamber 80 is increased.
  • the compression spring 240 pushes the valve body 150 back.
  • the valve body 150 therefore moves away from the sealing sleeve 190, which remains due to the friction on the tubular feed port 120.
  • the sealing sleeve 190 then moves from the closed position to the open position.
  • the connecting channel 54 between valve head 150 and the inner flange 210 of the sealing sleeve 190 is then open and connects the container 26 with the pump chamber 80 via the free spaces or grooves between the longitudinal ribs 250.
  • the compression spring 240 on which the inner support surface 211 of the inner flange 210 rests, now takes the sealing sleeve 190 and the valve body 150 at the same time with upward.
  • the volume of the pump chamber 80 increases. Since the connection channel 54 is open, the medium 29 can flow into the pump chamber 80.
  • the connecting passage 54 allows filling of the pumping chamber 80 to the extent that the volume of the pumping chamber 80 increases.
  • the communication passage 54 closes at approximately the same time as the seal sleeve 190 is pushed onto the supply port 120.
  • the connecting channel 54 opens before the sealing sleeve 190 separates from the supply port 120.
  • air can penetrate, if at all, only to a small extent, even if the seal of the pump piston 45 with respect to the pump cylinder 43 should not be completely guaranteed.
  • the lower sealing lip 103 is required, which is directed to the container 26, so that during the delivery of the flowable medium 29 of the pressure prevailing in the pump chamber 80 increases the sealing effect.
  • the two cooperating parts 150 and 190 of the inlet valve 66 therefore cooperate via the compression spring 240 and allow the liquid medium 29 is sucked into the pump chamber 80 during the operation of the metering pump 20.
  • the pressure in the pump chamber 80 in the downward movement of the movable parts 45, 150, 190 in the pump housing 48 is not increased to such an extent that the exhaust valve 162 could open.
  • the communication passage 54 between the pump chamber 80 and the reservoir 26 opens immediately at the beginning of the upward movement of the pump piston 45, so that air in the pump chamber 80 can spread, but is prevented from entering the bag 28 by the seal 41.
  • the volume of the pump chamber 80 increases and therefore generates a vacuum, which leads to an accelerated filling of the pump chamber 80 with the liquid medium 29.
  • the in the Fig. 3 and 4 shown embodiment of a dispensing package contains the same pump 20 as that of the Fig. 1 . 2 and 5 to 7 described first embodiment.
  • this second embodiment only another storage of the flowable medium 29 is provided in a rigid-walled, for example, bottle-shaped container 200, the bottom of which is formed by a drag piston 242 which abuts axially and sealingly against the rigid, cylindrical inner wall 244 of the container 200. such that after removal of a certain amount of the liquid medium 29, the drag piston 242 is raised under the action of the suction pressure in the reservoir 200 exerted by the pump 20 to an extent approximately equal to the volume of the liquid medium 29 discharged by the pump 20 equivalent.
  • the liquid medium 29 is sucked into the pump chamber 80 also in this embodiment due to the suction pressure exerted by the pump 20.
  • the construction of the pump 20 corresponds to that used in conjunction with the Fig. 1 . 2 and 5 has been described, reference is made in this regard to the above description of the pump 20.
  • the function of the dispensing pack according to the invention can be described as follows: During the first pump stroke, the air present under the pump piston 45 is displaced into the pouch 28 / container 200 and rises after exiting the dip tube nipple 30 in the flowable medium 29 within the pouch 28 / container 200 through the mirror of the medium 29 upwards. At the same time, the pump piston 45 sucks in air from the free atmosphere through the annular gap 23.
  • the described dispensing package according to the invention due to the sealing of the pump housing 48 relative to the container neck 21 through the seal 41 prevents air ingress and thus a deterioration of quality in the bag 270 of the container 26 and in the container 200 itself contained liquid medium 29 without it further constructive change of the pump 20 is required, which is usable in the event of a lack of sealing of the pump housing 48 relative to the container neck 21 and the cap 22 for flowable media, which are insensitive to contact with air.
  • the invention is not limited to the use of the above-described standard pump, but is applicable using any pumps that allow venting of the associated container and its flowable contents, but can be converted for the purpose of the invention.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)

Abstract

L'invention concerne un emballage de distribution comprenant une pompe doseuse (40) et un contenant (26) qui est relié de façon hermétique à celle-ci et qui peut être ventilé par celle-ci. Cet emballage comprend par ailleurs un bouchon de fermeture (22) comportant une ouverture axiale, un élément de retenue (38) servant à fixer la pompe à l'intérieur de l'ouverture du bouchon de fermeture (22), un corps de pompe (48) comprenant un cylindre de pompe, un piston de pompe qui peut se déplacer de façon étanche dans la chambre de la pompe et qui est pourvu d'une tige de piston, un canal de sortie axial qui s'étend à travers la tige du piston et le piston de pompe et qui relie la chambre de la pompe à une ouverture de distribution ménagée dans la tête d'actionnement, une soupape d'admission et une soupape de refoulement pour la substance fluide, ainsi qu'un ressort de pression hélicoïdal qui sollicite le piston de pompe en direction de sa position de repos. L'invention se caractérise en ce que le volume du contenant renfermant la substance fluide peut être adapté en fonction de la diminution du volume de substance fluide distribuée à partir du contenant et en ce que le bord intérieur (52) du joint (41) placé entre la surface frontale (27) du col (21) du contenant (26) et la collerette extérieure (34) de l'élément de retenue (38) repose sur le côté extérieur du corps de pompe (48).

Claims (10)

  1. Emballage de distribution, constitué d'une pompe de dosage (20) et d'un récipient (26) relié à cette dernière de manière étanche,
    comprenant un capuchon de fermeture (22) qui peut être fixé à un col (21) du récipient (26) et qui comprend une paroi cylindrique (31) qui entoure une ouverture axiale (32) qui est disposée au-dessus d'une collerette intérieure (34),
    comprenant un support (38) pour la fixation de la pompe (20) à l'intérieur de l'ouverture du capuchon de fermeture (22), le support (38), par l'intermédiaire d'une collerette extérieure (42), pouvant être pressé, en assurant l'étanchéité au moyen du capuchon de fermeture (22), contre un joint d'étanchéité annulaire (41) sur une face frontale extérieure du col de récipient (21),
    comprenant un boîtier de pompe (48) doté d'un cylindre de pompe (43) qui entoure une chambre de pompe (80), dont l'extrémité supérieure possède une ouverture, et qui est pourvu d'un embout de tube plongeur (30) au niveau de l'extrémité inférieure,
    comprenant un piston de pompe (45) qui est coulissant de manière étanche dans la chambre de pompe (80) et qui est pourvu d'un corps de piston (47) qui fait saillie vers l'extérieur à partir de la chambre de pompe (80), et qui est pourvu d'une tête d'actionnement et de distribution (90) au niveau de son extrémité extérieure,
    comprenant un canal de sortie axial (98) qui s'étend à travers le corps de piston (47) et le piston de pompe (45), et qui relie la chambre de pompe (80) à une ouverture de distribution (92) de la tête d'actionnement (90),
    comprenant une soupape d'admission et une soupape de sortie (158, 182) pour un milieu coulant (29), et
    comprenant un ressort de compression hélicoïdal (240) qui sollicite le piston de pompe (45) dans la direction de sa position de repos,
    le volume du récipient (26, 200) contenant le milieu coulant (29) pouvant être adapté à la diminution du volume de milieu coulant (29) distribué à partir du récipient,
    le joint d'étanchéité (41) entre la face frontale (27) du col de récipient (21) et la collerette extérieure (34) du support (38) s'appliquant de manière étanche à l'air, par l'intermédiaire de son bord de trou intérieur (52), contre le côté extérieur du boîtier de pompe (48),
    le joint d'étanchéité (41) empêchant l'entrée d'air et un espace annulaire (57) étant formé au-dessus du joint d'étanchéité (41),
    caractérisé en ce que
    le support (38) forme un interstice annulaire (23) à travers lequel le piston de pompe (45) aspire de l'air provenant de l'atmosphère libre lors de la course de pompe, l'air au-dessus du piston de pompe (45) s'échappant par l'interstice annulaire (23) lors d'une course d'aspiration, et une faible quantité d'air étant ainsi comprimée dans l'espace annulaire (57) à travers des canaux (62, 68, 70), moyennant quoi la pression d'étanchéité du joint d'étanchéité (41) étant accrue du côté extérieur du cylindre de pompe (43).
  2. Emballage de distribution selon la revendication 1, caractérisé en ce que le bord de trou intérieur (52) fait partie d'une lèvre annulaire (53).
  3. Emballage de distribution selon la revendication 2, caractérisé en ce que l'épaisseur du joint d'étanchéité annulaire (41) est réduite en direction de l'extrémité extérieure de la lèvre annulaire (53).
  4. Emballage de distribution selon la revendication 2 ou 3, caractérisé en ce que la lèvre annulaire (53) du joint d'étanchéité (41) est formée de telle sorte qu'elle s'applique radialement vers l'intérieur sous forme tronconique transversalement à travers un espace annulaire (57) contre le côté extérieur cylindrique du boîtier de pompe (80).
  5. Emballage de distribution selon la revendication 1, caractérisé en ce que le milieu (29) à l'intérieur du récipient (26) est entouré d'un sachet (28) en matériau souple dont le bord d'ouverture supérieur est relié de manière étanche à la paroi du récipient (26), tandis que de l'air à la pression atmosphérique est contenu dans un espace (35) entre le côté intérieur de la paroi de récipient et le côté extérieur du sachet (28).
  6. Emballage de distribution selon la revendication 1, caractérisé en ce que son sachet (28) et le récipient (26) sont formés d'un seul tenant.
  7. Emballage de distribution selon la revendication 6, caractérisé en ce que le bord d'ouverture du sachet (28) est surmoulé sur l'extrémité inférieure du col de récipient (21).
  8. Emballage de distribution selon la revendication 1, caractérisé en ce que le récipient (200) possède une paroi intérieure cylindrique (244) et son extrémité inférieure est ouverte, un piston suiveur (242) étant inséré dans l'extrémité inférieure de manière mobile axialement et de manière à assurer l'ëtanchéité par rapport à la paroi intérieure (244) du récipient (200), lequel piston suiveur étant coulissant dans la direction de la pompe (20) en fonction de la quantité de milieu (29) distribuée et de la pression d'aspiration exercée sur le milieu (29).
  9. Emballage de distribution selon la revendication 1, caractérisé en ce que l'ouverture de l'embout de tube plongeur (30) est dégagée.
  10. Utilisation d'un joint d'étanchéité (41) dans un emballage de distribution, constitué d'une pompe de dosage (20), d'un récipient (26) relié de manière étanche à cette dernière et d'un capuchon de fermeture (22) qui peut être fixé à un col (21) du récipient (26), le joint d'étanchéité (41) rendant étanche un boîtier (48) de la pompe (20) par rapport à un col de récipient (21) du récipient (26), le joint d'étanchéité (41) entre le col de récipient et le capuchon de fermeture (22) s'appliquant de manière étanche à l'air, par l'intermédiaire d'un bord de trou intérieur (52) et radialement vers l'intérieur sous forme tronconique transversalement à travers un espace annulaire (57), contre un côté extérieur cylindrique du boîtier de pompe (48), afin d'empêcher l'entrée d'air dans le récipient (26), et pour être pressé avec une pression élevée contre la paroi du boîtier de pompe (48) pendant une course d'aspiration d'un piston (45) de la pompe (20).
EP04763619A 2003-08-05 2004-07-29 Emballage de distribution Active EP1651356B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10335842A DE10335842C5 (de) 2003-08-05 2003-08-05 Abgabepackung
PCT/EP2004/008524 WO2005016551A1 (fr) 2003-08-05 2004-07-29 Emballage de distribution

Publications (2)

Publication Number Publication Date
EP1651356A1 EP1651356A1 (fr) 2006-05-03
EP1651356B1 true EP1651356B1 (fr) 2012-07-18

Family

ID=34177304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04763619A Active EP1651356B1 (fr) 2003-08-05 2004-07-29 Emballage de distribution

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Country Link
US (1) US8534506B2 (fr)
EP (1) EP1651356B1 (fr)
DE (1) DE10335842C5 (fr)
WO (1) WO2005016551A1 (fr)

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Also Published As

Publication number Publication date
DE10335842B4 (de) 2005-06-02
US20070007307A1 (en) 2007-01-11
DE10335842C5 (de) 2011-04-28
DE10335842A1 (de) 2005-03-10
US8534506B2 (en) 2013-09-17
WO2005016551A1 (fr) 2005-02-24
EP1651356A1 (fr) 2006-05-03

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