EP2190754B1 - Dispositif de dosage interne pour tube, comprenant un piston et un clapet - Google Patents

Dispositif de dosage interne pour tube, comprenant un piston et un clapet Download PDF

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Publication number
EP2190754B1
EP2190754B1 EP08804410A EP08804410A EP2190754B1 EP 2190754 B1 EP2190754 B1 EP 2190754B1 EP 08804410 A EP08804410 A EP 08804410A EP 08804410 A EP08804410 A EP 08804410A EP 2190754 B1 EP2190754 B1 EP 2190754B1
Authority
EP
European Patent Office
Prior art keywords
piston
dosing
tube
dosing sleeve
internal tube
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.)
Not-in-force
Application number
EP08804410A
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German (de)
English (en)
Other versions
EP2190754A1 (fr
Inventor
Elvira Ahrens
Hans-Joachim Ahrens
Stephan Ahrens
Janet Ahrens
Michael Raeth
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.)
Krallmann Kunststoffverarbeitungs GmbH
Original Assignee
Krallmann Kunststoffverarbeitungs GmbH
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Publication date
Application filed by Krallmann Kunststoffverarbeitungs GmbH filed Critical Krallmann Kunststoffverarbeitungs GmbH
Publication of EP2190754A1 publication Critical patent/EP2190754A1/fr
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Publication of EP2190754B1 publication Critical patent/EP2190754B1/fr
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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
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/24—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with auxiliary devices
    • B65D35/40—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with auxiliary devices for metering discharge

Definitions

  • the invention relates to an internal tube dispenser according to the preamble of claim 1 with piston and valve for tubes made of aluminum or plastic, which can also be used in the neck of plastic bottles, for dispensing a very specific, defined amount of cream when pressing a tube or a bottle, which may be cosmetic, medical, technical and other creams and pastes.
  • a tube or a bottle which may be cosmetic, medical, technical and other creams and pastes.
  • Known dosers for tubes are usually pump feeders, as they are known from soap dispensers ago. Their dosing accuracy is insufficient for medical purposes.
  • tube dispensers for two components are known EP 0 561 719 B1 in which, however, no dosages of certain strand lengths of cream take place.
  • a tube dispenser is after EP 0 508 168 B1 known, however, which concerns the geometry of the tube shoulder and the suck-back effect of cream goes.
  • Wertherhin are dosing after US 2006/0169716 A1 known that deal with the squeezing of remaining toothpaste from tubes.
  • the WO02 / 099364 A shows an internal Tubendosierer with piston according to the preamble of claim 1, wherein in the neck of a tube or bottle, a metering sleeve is arranged with an outside bottom, in the front end of which at least one outer opening is formed. In the rear end of the dosing sleeve, at least one inner opening is formed, which is connected to the interior of the tube or bottle.
  • a piston is movably arranged, wherein an outlet opening is closed after dispensing by the piston pushed forward. In order to bring the piston back to its original position, it is necessary to put the cap on the tube dispenser. For consumer applications, such as for hair dyes, it is troublesome to do the activation of the dosing system with screwing on the cap.
  • the invention has for its object to improve the known tube dispenser so that the activation of the dosing is done easily and automatically after each dosing.
  • a metering sleeve is fitted or formed in the neck of a tube or bottle, in the front end of an outer transverse opening is introduced, which opens into an annular space between the metering and the neck.
  • an inner transverse opening is introduced with any cross-section, which is connected to the interior of the tube or bottle, as is set by the elevations on the dosing a radial distance from the neck of the tube.
  • an internal piston with its bore should move between two stops up to a defined distance from each other on the piston rod.
  • such a compression spring, the tension spring or a tension-compression spring made of a stainless metal be made of a plastic or of an elastomer.
  • plastic especially POM and PA are eligible.
  • the compression or tension spring triggers practically the first cycle of dosing, it manufactures readiness for work. It pushes or locks the outer piston behind the inner transverse opening to an inner stop in the dosing sleeve.
  • the spring can, as I said made of stainless metal, but also made of plastic or an elastomer.
  • the dosing sleeve itself has outside in the area between the outer transverse opening and the inner transverse opening one or more elevations in the form of a mounting sleeve, webs or the like, so that the dosing sleeve can be held in the larger inner diameter of the neck and an annular space in the front region arise can.
  • a wall or collar onto the ring valve When the cap is screwed on, press a wall or collar onto the ring valve.
  • the outer piston was previously pressed in the direction of the outer stop. His forward movement stops when he has largely compressed the compression spring, which is supported in the most important embodiment at the bottom of the dosing sleeve.
  • the cream flows out laterally, as the inner piston is pushed forward. He has a hole and possibly even a small piston sleeve for better sealing.
  • a stop collar inside the dosing sleeve secures the inner piston in its end position and prevents it from slipping into the interior.
  • the pressure of the cream now acts on the inner side of the outer piston via the inner transverse opening until it has reached the outer stop.
  • the inner piston should have to seal against the thinner portion of the piston rod directed towards the interior, a small cuff.
  • the inner piston could also be made of an elastomer such as TPE or TPV, so it would be perfectly elastic and tight.
  • the softer ring valve should preferably be molded in the two-component injection molding process to the harder sleeve of the mixing nozzle.
  • the mixing nozzle can also be made in one piece with the ring valve made of a soft plastic, for example TPE, TPV or silicone.
  • the ring valve and the front part of the mixing sleeve may be made of a soft elastic material.
  • a TPE, TPV or a silicone is provided for this or for the ring valve.
  • the metering sleeve has on the outside at least one barrier collar, which does not allow the cream to flow unintentionally through the annular gap between the neck and the metering sleeve.
  • the opening of the annular valve or its valve shield springs from the outside of the dosing sleeve and releases an annular gap.
  • the front outlet opening of the ring valve is closed after dispensing, when the pressure has dropped on the tube, from the valve screen of the ring valve, which springs back inwards onto the dosing sleeve.
  • FIG. 1 shows a representation of a Tubendosierers with screwed cap 18 on a tube 2 in the side view.
  • FIGS. 2 to 3 show two sections through this Tubendosierer with the tube 2 with screwed cap 18.
  • a mixing nozzle 30 which is designed as an annular space 7 and a mixing chamber 31
  • a ring valve 40 can be seen at an outlet opening 8 of a mixing nozzle 30, which is designed as an annular space 7 and a mixing chamber 31, a ring valve 40 can be seen.
  • An outer piston 12 and an inner, entrained piston 15 are pushed by a at the bottom 20 of a metering sleeve 4 supporting compression spring 19 completely inwardly to an inner stop collar 47 in the dosing sleeve 4.
  • two outer transverse openings 6, 6 ' are introduced, which open in the annular space 7 between the dosing sleeve 4 and the mixing nozzle 30, which is arranged at a radial distance B to a sleeve 46 of the mixing chamber 31.
  • the disc-shaped annular valve 40 made of a TPV of the Shore A hardness 30 with a flat valve screen 44 with the central outlet opening 8 is formed in the 2K process.
  • two inner transverse openings 10, 10 ' are introduced with a rectangular, rounded cross section, which protrude into an inner space 11 of the tube 2 or via the inwardly open webs 24 have a connection there.
  • the two, depending on defined limits movable piston 12 and 15 are mounted.
  • the outer piston 12 is movably disposed therein with a piston rod 13, 13 'directed towards the inner space 11.
  • Second moves on the slightly thinner portion of the piston rod 13 ', a bore 14 of the inner piston 15 between two stops 16 and 17 to a defined distance A to each other.
  • the compression spring 19 triggers after unscrewing the cap 18 practically the first cycle of dosing, it establishes the willingness to work. It pushes the outer piston 12 inwardly, which in turn is locked with the outer stop 16 on its piston rod 13, the inner piston 15 behind a very small, behind the inner transverse opening 10, 10 'lying increase 21 in the dosing sleeve 4. It is also important, only a few tenths of a millimeter high, inner stop collar 47, so that the inner piston 15 can not slide into the interior 11.
  • the dosing sleeve 4 itself has in a region 23 between the outer transverse opening 6 and the inner transverse opening 10, 10 'an increase in the form of a mounting sleeve, so that the dosing sleeve 4 can be held in the larger inner diameter of the neck 1 and the necessary for the function annulus 7 can arise in the front area.
  • cap 18 When cap 18 is screwed on, its inside 25 presses against ring valve 40 to ensure perfect sealing.
  • FIGS. 4 to 6 show the Tubendosierer with removed cap 18 and with the two pistons 12 and 15, which are positioned in their final position to the left and right of the inner transverse openings 10, 10 '. If one pushes on the tube 2, becomes accordingly the FIGS. 7 to 9 the cream in the two inner transverse openings 10, 10 'pressed. As a result, the inner piston 15 is pressurized from both sides, whereby the pressures cancel and he stops in its final position. This process is supported by four very small snap points in the dosing sleeve 4 between the inner transverse bore 10 and the inner piston 15. In contrast, the cream pushes now on the inside of the outer piston 12 and let him first wander to the outside by the path length of his stroke, see FIGS. 10 to 12 ,
  • the inner stop 17 takes on the inner portion 13 'of the piston rod 13, which extends through the bore 14 of the inner piston 15, selbigen in the direction of the outer transverse opening 6, until the outer piston 12 has arrived at the now compressed compression spring 19.
  • a dosing chamber 26 has already been filled with cream before.
  • the further applied pressure of the cream on the inner piston 15 ensures that he according to the FIGS. 13 to 15 is pressed in the direction of the outer piston 12. Its bore 14 seals with respect to the thinner portion 13 'by means of a small sleeve 15' perfectly.
  • the ring valve 40 springs from the outside 42 of the metering and thus releases an annular gap 49 from the mixing nozzle 30 to the outside. After the pressure on the tube 2 subsides, the ring valve 40 again compresses the mixing chamber 31 in a sealing manner on the outside 42 of the dosing sleeve 4 and thus prevents a sucking back of contaminated cream.
  • the mixing nozzle 30 is tightly secured, which surrounds the transverse openings 6, 6 'of the dosing sleeve 4 in the radial distance B and at an axial distance to the outside 42 of the metering sleeve 4, the mixing chamber 31 forms, which has the main axis 32 coaxial, front outlet opening 8.
  • the discharge opening 8 of the ring valve 40 is sealed after donation by the re-inwardly sprung valve screen 44 of the ring valve 40.
  • the compression spring 19 ensures that the piston pair 12, 15 is pressed again in the direction of the interior 11.
  • FIG. 19 a single annular valve 40 is shown, the disc-shaped valve screen 44 is shown in the sprung position.
  • FIG. 20 shows the dosing sleeve 4 with its two locking collars 36, which prevent the expression of the cream over this area.
  • the webs center the dosing sleeve 4 in the neck 1 of the tube 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)

Claims (13)

  1. Dispositif de dosage interne pour tube équipé d'un piston pouvant également être placé dans une collerette de bouteille en matière plastique, pour distribuer une quantité déterminée parfaitement définie de crème lorsque l'on comprime un tube, ces crèmes pouvant être des crèmes et pâtes cosmétiques, médicales, techniques entre autres, ledit dispositif comprenant :
    un embout de dosage (4) pourvu d'un fond (20) qui est disposé en direction du côté extérieur dans la collerette (1) d'un tube (2) ou d'une bouteille, l'extrémité avant (5) dudit côté extérieur comprenant au moins une ouverture transversale (6, 6') extérieure ;
    au moins une ouverture transversale intérieure (10, 10') qui est placée dans l'extrémité arrière de l'embout de dosage (4), ladite ouverture étant reliée à l'espace intérieur (11) du tube (2) et/ou de la bouteille ;
    un piston (12) qui est disposé de façon mobile dans l'embout de dosage (4) ;
    une ouverture de sortie (8) qui se referme après la distribution par le piston (12) comprimé vers l'avant ;
    caractérisé en ce que :
    l'ouverture transversale extérieure (6, 6') débouche dans un espace annulaire (7) prévu entre l'embout de dosage (4) et une buse de mélange (30) ;
    le piston est un piston (12) externe pourvu d'une tige-poussoir de piston (13) orientée en direction de l'espace intérieur (11) ;
    un piston intérieur (15) peut être déplacé sur la tige-poussoir de piston (13, 13') jusqu'à une certaine distance (A) définie par rapport au piston extérieur (12) ;
    soit un ressort de pression (19) soit un ressort de traction et/ou de pression (19') s'appuyant contre l'extrémité intérieure (9) de l'embout de dosage (4) est fixé au niveau de l'extrémité intérieure de la tige-poussoir de piston (13) entre le fond (20) et le piston extérieur (12) ;
    lors du dosage, le piston extérieur (12) est poussé en direction de l'ouverture de sortie (8) par la crème sous pression s'écoulant dans l'ouverture transversale intérieure (10, 10'), la butée intérieure (17) tirant le piston intérieur (15) en direction de l'ouverture de sortie (8) après dépassement de la course correspondant à la distance (A) ;
    après le dosage, le piston extérieur (12) est comprimé avec son fond (34) contre le fond extérieur (20) ou contre le ressort de pression (19) comprimé dans l'embout de dosage (4) et le piston intérieur (15) est comprimé jusque contre l'ouverture transversale extérieure (6, 6') et/ou jusque contre la butée extérieure (16) de la tige-poussoir de piston (13, 13') ;
    une buse de mélange (30) est fixée de façon étanche sur la zone avant (28) de l'embout de dosage (4), au niveau du côté avant (27) de la collerette (1) et/ou au niveau ou bien sur un filetage aveugle (35), ladite buse entourant l'ouverture transversale (6, 6') de l'embout de dosage (4) à une certaine distance radiale (B), un clapet annulaire (40) élastique souple en forme de disque étant fixé à ou moulé sur un protège-clapet (44) orienté en direction de l'axe principal au moins au niveau du côté avant de la chambre de mélange (31), ledit protège-clapet possédant une ouverture de sortie avant (8) coaxiale par rapport à l'axe principal (32) ;
    après la distribution, le côté intérieur (41) du clapet annulaire (40) est mis sous ressort de façon étanche sur le côté extérieur (42) de l'embout de dosage (4) ; et
    l'ouverture de sortie (8) est verrouillée après la distribution du fond extérieur (34) comprimé vers l'avant du piston extérieur (12).
  2. Dispositif de dosage interne pour tube selon la revendication 1, caractérisé en ce que dans la version dans laquelle le piston extérieur (12) dispose d'une tige-poussoir de piston (13), le piston intérieur (15) possède un alésage (14) adapté, le piston intérieur (15) pouvant se déplacer entre deux butées (16 et 17).
  3. Dispositif de dosage interne pour tube selon la revendication 1 et 2, caractérisé en ce que l'ouverture de sortie avant (8) est verrouillée, après la distribution par le fond extérieur (34) comprimé vers l'avant du piston (12) extérieur, en affleurement par rapport au côté extérieur (43) du clapet annulaire (40).
  4. Dispositif de dosage interne pour tube selon la revendication 1, 2 ou 3, caractérisé en ce que la buse de mélange (30) est fabriquée d'un seul tenant avec le clapet annulaire (40) à partir d'une matière plastique souple ou d'une silicone.
  5. Dispositif de dosage interne pour tube selon la revendication 1, 2 ou 3 et 4, caractérisé en ce que la buse de mélange (30) est fabriquée d'un seul tenant avec le clapet annulaire (40) à partir d'une matière plastique souple ou d'une silicone et est collée sous précontrainte sur une partie rehaussée de l'embout de dosage.
  6. Dispositif de dosage interne pour tube selon l'une quelconque des revendications précédentes, caractérisé en ce que la buse de mélange (30) est fabriquée d'un seul tenant avec le clapet annulaire (40) à partir d'une matière plastique souple ou d'une silicone, une bague de serrage étant moulée sur son extrémité.
  7. Dispositif de dosage interne pour tube selon l'une quelconque des revendications précédentes, caractérisé en ce qu'en cas de pression exercée sur le tube (2) ou la bouteille, l'ouverture (44) du clapet annulaire (40) est écarté par ressort par les bords extérieurs (42) de l'embout de dosage (4).
  8. Dispositif de dosage interne pour tube selon l'une quelconque des revendications précédentes, caractérisé en ce que le piston intérieur (15) possède une coupelle (15') orientée vers l'espace intérieur (11) pour réaliser l'étanchéité par rapport à la zone (13') plus fine de la tige-poussoir de piston (13).
  9. Dispositif de dosage interne pour tube selon l'une quelconque des revendications précédentes, caractérisé en ce que des parties rehaussées prenant la forme d'un embout de montage sont constituées d'étais (24) ou d'éléments similaires se coinçant dans la collerette (1), sur l'embout de dosage (4) placé à cette fin quelque peu dans la zone (23) située à une certaine distance (D) derrière l'ouverture transversale (6).
  10. Dispositif de dosage interne pour tube selon l'une quelconque des revendications précédentes, caractérisé en ce que le ressort de pression (19) ou le ressort de traction (19) ou un ressort de traction-pression (19) est fabriqué à partir d'un métal inoxydable.
  11. Dispositif de dosage interne pour tube selon l'une quelconque des revendications précédentes, caractérisé en ce que le ressort de pression (19) ou le ressort de traction (19) ou un ressort de traction-pression (19) est fabriqué en matière plastique ou en élastomère.
  12. Dispositif de dosage interne pour tube selon l'une quelconque des revendications précédentes, caractérisé en ce que le piston intérieur (15) est fabriqué à partir d'un élastomère, tel le TPE ou le TPV ou à partir d'une silicone.
  13. Dispositif de dosage interne pour tube selon l'une quelconque des revendications précédentes, caractérisé en ce que le clapet annulaire (40) est moulé au niveau de la buse de mélange (30) selon un procédé de moulage par injection à bicomposants.
EP08804410A 2007-09-21 2008-09-18 Dispositif de dosage interne pour tube, comprenant un piston et un clapet Not-in-force EP2190754B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007045406A DE102007045406A1 (de) 2007-09-21 2007-09-21 Interner Tubendosierer mit Kolben und Feder
PCT/EP2008/062475 WO2009040295A1 (fr) 2007-09-21 2008-09-18 Dispositif de dosage interne pour tube, comprenant un piston et un clapet

Publications (2)

Publication Number Publication Date
EP2190754A1 EP2190754A1 (fr) 2010-06-02
EP2190754B1 true EP2190754B1 (fr) 2012-01-25

Family

ID=39970868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08804410A Not-in-force EP2190754B1 (fr) 2007-09-21 2008-09-18 Dispositif de dosage interne pour tube, comprenant un piston et un clapet

Country Status (4)

Country Link
EP (1) EP2190754B1 (fr)
AT (1) ATE542752T1 (fr)
DE (1) DE102007045406A1 (fr)
WO (1) WO2009040295A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9026606D0 (en) * 1990-12-06 1991-01-23 Courtaulds Packaging Ltd Dose dispenser
EP0508168B1 (fr) 1991-04-08 1996-07-03 Colgate-Palmolive Company Tube-distributeur présentant une fenêtre de vision
FR2688488B1 (fr) 1992-03-16 1994-05-06 Cebal Sa Tube et distributeur le comprenant destine au stockage et a la distribution de deux produits cremeux ou pateux.
JP3771091B2 (ja) * 1999-09-30 2006-04-26 株式会社吉野工業所 定量注出容器
US6675845B2 (en) * 2001-06-05 2004-01-13 The Procter & Gamble Company Package and method for controlled metered dose dispensing of a fluid product
US20060169716A1 (en) 2005-02-01 2006-08-03 Wilkinson William T Tooth paste dispenser

Also Published As

Publication number Publication date
DE102007045406A1 (de) 2009-04-02
ATE542752T1 (de) 2012-02-15
EP2190754A1 (fr) 2010-06-02
WO2009040295A1 (fr) 2009-04-02

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