WO2021099375A1 - Fermeture de récipient - Google Patents

Fermeture de récipient Download PDF

Info

Publication number
WO2021099375A1
WO2021099375A1 PCT/EP2020/082516 EP2020082516W WO2021099375A1 WO 2021099375 A1 WO2021099375 A1 WO 2021099375A1 EP 2020082516 W EP2020082516 W EP 2020082516W WO 2021099375 A1 WO2021099375 A1 WO 2021099375A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove
valve cap
tongue
container
dispenser according
Prior art date
Application number
PCT/EP2020/082516
Other languages
German (de)
English (en)
Inventor
Thomas OLBERDING
Original Assignee
Alpla Werke Alwin Lehner Gmbh & Co. Kg
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 Alpla Werke Alwin Lehner Gmbh & Co. Kg filed Critical Alpla Werke Alwin Lehner Gmbh & Co. Kg
Priority to EP20804593.0A priority Critical patent/EP4061741A1/fr
Publication of WO2021099375A1 publication Critical patent/WO2021099375A1/fr

Links

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • 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 invention relates to an aerosol dispenser according to the preamble of claim 1.
  • outer containers made of plastic are known, from which a filling material is conveyed out of the container by a propellant gas.
  • the outer container is closed by a plastic valve cap with a valve.
  • a bag in which the contents are filled.
  • Aussenbe the propellant gas is abandoned.
  • the propellant exerts pressure on the bag, which forces the contents out of the bag when the valve is opened.
  • the outer container, the valve cap and the bag are made from plastics that can be welded to one another.
  • the valve cap has an outer and an inner radial welding protrusion formed on its underside.
  • the outer projection can be welded to the outer container and the inner projection to the bag by means of a friction welding process.
  • valve cap must be designed in such a way that it can be welded to the outer container and the bag. Contamination of the product with abraded plastic chips, which can occur during friction welding, is also not reliably prevented.
  • the projections and their seats on the outer container and the bag must be manufactured very precisely so that the valve cap does not sit askew on the outer container.
  • the invention is preferably characterized in that a first spring and a first groove formed on the container neck, usammen antibiotic which the second groove and formed with a on the side facing the container neck underside of the valve cap second spring Z to connect to the valve cap to the container by engaging the first tongue in the second groove and the second tongue in the first groove.
  • a non-detachable and filling material-tight connection can be established, even if the filling material is under pressure in the interior of the container.
  • This connection is preferably produced by a friction welding process in which the plastics of the valve cap and the container merge into one another.
  • other types of connection such as gluing or welding with an auxiliary material, are also conceivable.
  • the interaction of the second tongue with the first groove serves to collect impurities, in particular swarf, which arise when the dispenser is closed.
  • impurities in particular swarf, which arise when the dispenser is closed.
  • the product is reliably protected from contamination by the impurities. So that this protection works, the first groove and the second tongue are arranged closer to the longitudinal axis of the container than the first tongue and the second groove.
  • the end of the first spring has, in cross section, the shape of a first trapezoid with first legs.
  • the first tongue has the largest possible contact area with the second groove.
  • the shape of an isosceles trapezoid is preferred, in which definiti- Onsce the first legs are of the same length or in which the two réellewin angles are the same on one of the parallel base sides.
  • Other trapezoidal shapes, such as a right-angled trapezoid, are also conceivable.
  • the bottom of the two th groove has the shape of a second trapezoid with second legs in cross section. This allows the first tongue to be inserted deeply into the second groove for connection.
  • the invention is also preferably characterized in that the first and second legs are flush with one another when the valve cap is placed on the container neck. This means that the interior angles of the first and the second trapezoid are equal. This ensures that the contact surface of the first and second legs is as large as possible and consequently a particularly stable welded connection can be produced between the valve cap and the container neck. With this design of the first and second trapezoid, the two welding partners are centered on each other when they are assembled.
  • the first tongue and the second groove are expediently dimensioned in such a way that a first cavity is formed in the second groove when the valve cap is placed on the neck of the container. Therefore the second legs are longer than the first legs. During friction welding, the first tongue can therefore penetrate further and further into the second groove until it reaches the bottom of the second groove.
  • the first cavity described above can be formed.
  • first groove and the first tongue or the second groove and the second tongue are arranged next to one another.
  • the A handle elements are arranged to save as much space as possible.
  • the first tongue and the first groove are formed on the end face of the Be Schol terhalses. This embodiment also enables the engagement elements to be arranged on the container neck in a space-saving manner as possible.
  • a third tongue is formed on the end face of the container neck and a third groove is provided on the underside of the valve cap, in which the third tongue can engage.
  • the engagement elements can together form a labyrinth seal which reliably retains chips in front of the interior of the container.
  • the first groove is advantageously delimited by the first and third tongue. It is also advantageous if the second tongue is delimited by the second and third groove. As a result, a labyrinth seal can be realized which only takes up the wall thickness of the container neck as space requirement.
  • the first, second and third tongue and the first, second and third groove are circular and have a common axis of rotation when the valve cap is placed on the container neck.
  • the valve cap can be rotated relative to the container neck, which is unavoidable for the friction welding process.
  • the middle diameters of the first tongue and the second groove are the same size and the mean diameters of the first groove and the second tongue are the same size.
  • the springs engage in the middle of the grooves and two annular chambers are formed.
  • the welding chips are insulated, which are rubbed off between the first and the second trapezoid during the friction process.
  • a circular shoulder is formed on the edge of the valve cap, on which the second tongue and the second and third groove are formed. The shoulder provides the space that is necessary so that the engagement elements of the valve cap can be formed exactly over the engagement elements of the container neck.
  • the valve cap has a first cylindrical wall which can protrude into the container neck and the valve cap is centered on the container neck.
  • the first cylindrical wall is preferably conical formed, whereby this centering takes place automatically when the valve cap is put on and takes place in addition to the centering by the first tongue with the second groove.
  • the shoulder extends between the first cylindrical wall and a second cylindrical wall.
  • the second wall protects the welded connection between the first tongue and the second groove from mechanical damage, since the second wall overlaps the container neck.
  • the invention is also preferably characterized in that engagement means are provided on the valve cap, on which a tool can engage in order to set the valve cap in rotation relative to the container.
  • engagement means are provided on the valve cap, on which a tool can engage in order to set the valve cap in rotation relative to the container.
  • the valve cap can be friction-welded to the container neck by inserting a corresponding tool into the engagement means of the valve cap.
  • the rotational movement is preferably an oscillating rotary movement with an angle of rotation of 90 degrees each.
  • FIG. 1 a perspective view of an aerosol dispenser with a loading container in the form of a preform and a valve cap which can be welded to the container neck;
  • FIG. 2 a section through the valve cap and the container neck
  • FIG. 3 a detailed view of the connection between the container neck and the valve cap from FIG. 2 when the valve cap is placed on the container;
  • FIG. 4 a detailed view of the connection between the container neck and the valve cap from FIG. 2 when the valve cap is welded to the container in a first embodiment
  • FIG. 5 a detailed view of the connection between the container neck and the valve cap from FIG. 2 in a second embodiment
  • FIG. 6 a detailed view of the connection between the container neck and the valve cap from FIG. 2 in a third embodiment
  • FIG. 7 the container in a side view in the form of a plastic bottle with a correspondingly shaped container neck;
  • FIG. 8 the container in a side view in the form of a preform with a correspondingly shaped container neck;
  • FIG. 9 the container neck from FIG. 5 or 6 enlarged and partially cut open
  • FIG. 10 the end face of the container neck in a detailed view
  • FIG. 11 a detailed view of the valve cap.
  • an aerosol dispenser is shown, which is designated as a whole with the reference numeral 11.
  • the aerosol dispenser 11 has a container 13 and a valve cap 15.
  • the container 13 is shown as a preform in FIGS. 1 and 6, but can also be a bottle (FIG. 5).
  • the container 13 comprises a first end which is designed as a bottom 17 and a second end which is designed as a neck 19.
  • the valve cap 15 is equipped with a valve 21 in its center.
  • a product can be filled in the Benzol ter 13 .
  • a piston can be arranged in the container 13 (not shown in the figures), which divides the inner space 23 in a gas-tight manner into a gas space and a filling material space.
  • a propellant gas is filled in the gas space and the filling material is filled in the filling material space. If the valve is opened, the piston driven by the propellant gas moves upwards and pushes the filling material through the valve 21.
  • the container 13 and the valve cap 15 are each made of a plastic, and the plastics can be welded together. By rapidly oscillating about the longitudinal axis 25 relative to the container 13, at the contact surfaces between the container neck 19 and the valve cap 15 generates such a high degree of frictional heat that the plastics melt together and the valve cap 15 is welded to the container neck 19.
  • a first tongue 29, a first groove 31 and a third tongue 33 are formed on the end face 27 of the container neck 19.
  • the first and third tongue 29, 33 are preferably separated from one another by the first groove 31.
  • the first and third tongue 29, 33 and the first groove 31 preferably have the shape of a circular ring with the longitudinal axis 25 as the center.
  • the longitudinal axis can therefore also be regarded as an axis of rotation 25.
  • a shoulder 35 is formed on the outer edge of the valve cap 15 and is positioned between a first inner cylindrical wall 37 and a second outer cylindrical wall 39.
  • a second tongue 41 and a second and third groove 43, 45 are formed on the circular shoulder 35.
  • the end of the first spring 29 has, in cross section, the shape of a first trapezoid 47 with first legs 49a, 49b.
  • the base of the second groove 43 has, in cross section, the shape of a second trapezoid 51 with second legs 53a, 53b.
  • the two trapezoids 51, 53 are preferably isosceles trapezoids, but the trapezoids can also be right-angled, for example, or the first or second legs can also have a different position relative to one another.
  • the first legs 49a, 49b lie flush with the second legs 53a, 53b when the valve cap 15 is placed on the container neck 19.
  • the interior angles of the first legs 49a, 49b are therefore preferably the same size as the interior angles of the second legs 53a, 53b.
  • the flush contact of the legs 49, 53 enables the valve cap 15 to be automatically centered with the container neck 19 before the start of welding.
  • a large friction surface is also formed between the first and second legs. If the attached valve cap 15 is set in rotation relative to the container neck 19, frictional heat arises between the first legs 49a, 49b and the second legs 51a, 51b, which melt the plastics of the valve cap 15 and the container 13.
  • the first tongue 29 is therefore friction-welded to the second groove 43, and the valve cap 15 is thus filled with the container 13 in a sealed manner connected.
  • the welded joint is tight even if the product filled into the dispenser 11 is under a pressure which is necessary to push the product through the valve 21 out of the dispenser 11.
  • the first tongue 29 protrudes only far enough into the second groove 43 that a first hollow space 55 is formed at the bottom of the second groove 43.
  • the height 57 of the first trapezoid 47 is therefore smaller than the height 60 of the second trapezoid.
  • the first tongue 29 penetrates the second groove 43, as a result of which the first cavity 55 is reduced in size to form a second cavity 59.
  • the first tongue 29 can also be driven to the bottom of the second groove 43 (FIG. 5) and beyond (FIG. 6), as a result of which there is no longer a second cavity 59.
  • FIG. 5 the first tongue 29 is pressed in to the bottom of the second groove 43. This creates a weld seam 62. The pressure and the resulting friction weld connection can be continued even further until the first tongue 29 completely fuses with the second groove 43 (FIG. 6).
  • FIGS. 3 to 6 show that the second and third tongue 41, 33 penetrate further and further into the first and third groove 31, 45, the more pronounced the friction welding is.
  • the labyrinth seal formed by the plurality of grooves and tongues is sealed better and better and passages are completely closed. It is therefore impossible that chips 64 produced during the friction welding penetrate into the interior 23 and contaminate it. This is also advantageous in that the deeper the valve cap 15 and the end face 27 interlock or the more weld chips 64 arise, the sealing device becomes more tight.
  • the mean diameters of the first annular spring 29 and the second annular groove 43 are the same size and correspond to a first diameter 61.
  • the mean diameters of the second annular spring 41 and the first annular groove 31 are the same size and correspond to a second diameter 63
  • the mean diameters of the third circular tongue 33 and the third circular groove 45 are of the same size and correspond to a third diameter 65.
  • the first tongue 29, the first groove 31 and the third tongue 33 are arranged next to one another or on the container neck 19. on the valve cap 15, the second groove 43, the second tongue 41 and the third groove 45 are arranged next to one another. This allows a System of springs and grooves are formed, which interlock and function on the principle of a labyrinth seal.
  • Chips 64 which are formed during the friction welding, especially when the first and second legs 49,53 interact, are caught in the first groove 31. During the friction welding, the first groove 31 is completely closed by the second tongue 41. Penetration of chips 64 into the interior 23, which could contaminate the filling material, is reliably prevented by the design of the labyrinth seal.
  • the shoulder 35 is delimited on its side closer to the longitudinal axis 25 by the first cylindrical wall 37.
  • the first wall 37 preferably has a conical shape, as a result of which the valve cap 15 is centered on the container neck 19 in addition to the centering function of the trapezoids 47, 51 when it is placed on the container neck 19.
  • the second cylindrical wall 39 which covers the first spring 29 and accordingly protects against mechanical damage, closes on the outside of the shoulder 35.
  • Engagement means 71 are provided on the top of the valve cap 15. A tool can intervene at this
  • a handle means 71 which can set the valve cap 15 in a rotational movement about the axis of rotation 25 when the valve cap 15 is placed on the container neck 19. This can be, for example, an oscillating Drehbewe supply by 90 degrees.
  • the valve cap 15 and the container 13 are preferably made of polyethylene terephthalate (PET) or polyethylene furanoate (PEF), which plastics can be welded together.
  • PET polyethylene terephthalate
  • PET polyethylene furanoate
  • the design of the connecting elements between the valve cap 15 and the loading container neck 19 as a first in cross-section trapezoidal spring 29 and as a second in cross-section trapezoidal groove 43 enables reliable friction welding.
  • the design of the connecting elements as a labyrinth seal ensures that weld chips 64 produced during welding are retained in the labyrinth seal and cannot get into the product.

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)

Abstract

L'invention concerne un distributeur d'aérosol (11) comportant un récipient en matière plastique (13), qui comprend une première extrémité se présentant sous forme d'un fond et une seconde extrémité ouverte se présentant sous forme d'un col (19), et un capuchon de soupape en matière plastique (15), qui comporte une soupape et qui peut être soudé au récipient (13) au moyen d'un procédé de soudage par friction. Sur le col du récipient (19) sont formées une première languette (29) et une première rainure (31), qui interagissent avec une seconde rainure (43) et une seconde languette (41) formées sur la face inférieure du capuchon de soupape (15) en regard du col du récipient (19), afin de relier le capuchon de soupape (15) au récipient (13) par mise en prise de la première languette (29) dans la seconde rainure (43) et par mise en prise de la seconde languette (41) dans la première rainure (31).
PCT/EP2020/082516 2019-11-22 2020-11-18 Fermeture de récipient WO2021099375A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20804593.0A EP4061741A1 (fr) 2019-11-22 2020-11-18 Fermeture de récipient

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01475/19 2019-11-22
CH01475/19A CH716828A1 (de) 2019-11-22 2019-11-22 Aerosol-Spender.

Publications (1)

Publication Number Publication Date
WO2021099375A1 true WO2021099375A1 (fr) 2021-05-27

Family

ID=68807954

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/082516 WO2021099375A1 (fr) 2019-11-22 2020-11-18 Fermeture de récipient

Country Status (3)

Country Link
EP (1) EP4061741A1 (fr)
CH (1) CH716828A1 (fr)
WO (1) WO2021099375A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1337812C (fr) * 1987-10-26 1995-12-26 Winfried Jean Werding Appareil de stockage et de livraison regulee de produits sous pression
WO2000018660A1 (fr) * 1998-09-29 2000-04-06 Park, Jin, Ha Recipient pulverisateur et procede de fabrication dudit recipient
GB2554745A (en) * 2016-10-07 2018-04-11 Plasvalco Ltd Aerosol spray device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1337812C (fr) * 1987-10-26 1995-12-26 Winfried Jean Werding Appareil de stockage et de livraison regulee de produits sous pression
WO2000018660A1 (fr) * 1998-09-29 2000-04-06 Park, Jin, Ha Recipient pulverisateur et procede de fabrication dudit recipient
GB2554745A (en) * 2016-10-07 2018-04-11 Plasvalco Ltd Aerosol spray device

Also Published As

Publication number Publication date
CH716828A1 (de) 2021-05-31
EP4061741A1 (fr) 2022-09-28

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