EP3741469B1 - Mehrkammerkartusche und verfahren zu ihrer befüllung - Google Patents

Mehrkammerkartusche und verfahren zu ihrer befüllung Download PDF

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Publication number
EP3741469B1
EP3741469B1 EP20172635.3A EP20172635A EP3741469B1 EP 3741469 B1 EP3741469 B1 EP 3741469B1 EP 20172635 A EP20172635 A EP 20172635A EP 3741469 B1 EP3741469 B1 EP 3741469B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
seals
piston
partition wall
chamber cartridge
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.)
Active
Application number
EP20172635.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3741469A1 (de
Inventor
Simon Hüglin
Benedikt Scholl
Markus Semmler
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.)
Fischerwerke GmbH and Co KG
Original Assignee
Fischerwerke GmbH and 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 Fischerwerke GmbH and Co KG filed Critical Fischerwerke GmbH and Co KG
Publication of EP3741469A1 publication Critical patent/EP3741469A1/de
Application granted granted Critical
Publication of EP3741469B1 publication Critical patent/EP3741469B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00576—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container
    • B05C17/00579—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container comprising means for allowing entrapped air to escape to the atmosphere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
    • B05C17/0106—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like with means for longitudinally cutting container walls during relative displacement of the piston and its cooperating container
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/325—Containers having parallel or coaxial compartments, provided with a piston or a movable bottom for discharging contents
    • 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
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • B65D83/0033—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container the piston being a follower-piston and the dispensing means comprising a hand-operated pressure-device at the opposite part of the container

Definitions

  • the invention relates to a multi-chamber cartridge having the features of the preamble of claim 1 and a method for filling it with the features of the preamble of claim 8.
  • Cartridges for adhesives and sealants and fastening materials and the like are known. They are normally in the form of a cylindrical tube and have a piston which can be displaced in the cartridge in order to displace a free-flowing, in particular pasty, filling compound from the cartridge.
  • the massecuite exits through an outlet at one end of the cartridge, referred to herein as the "front end".
  • the cartridges are inserted into so-called, mostly hand-operated, electrically or pneumatically operated squeezing guns, with which the piston in the cartridge can be displaced in the direction of the front end of the cartridge.
  • the patent EP 0 119 847 B1 discloses a two-chamber cartridge having a cylindrical-tubular housing, referred to herein as a "barrel" and which is divided into two chambers by a partition wall disposed in the barrel in an axis-parallel plane of the barrel.
  • a piston that can be displaced in the cylinder in order to press out a filling compound has a peripheral cutting edge that separates the partition wall on the inner circumference of the cylinder from the cylinder when the piston is displaced in the cylinder.
  • the patent application US5209376 discloses a toothpaste dispenser.
  • the dispenser includes an outer chamber containing a first component and an inner chamber coaxially disposed within the outer chamber containing a second component of the toothpaste. The components are separated from each other by the chambers.
  • a piston By pressing a button on an outlet of the dispenser, a piston is pushed in the direction of the outlet, causing the two components to emerge from the outlet.
  • the piston has ventilation holes and cutting edges. The edges are like that arranged on the piston so that the movement of the piston in the direction of the outlet cuts open the inner chamber.
  • DE 10 2016 104 410 A1 discloses a device for squeezing out bone cements.
  • the device has a cylindrical cartridge which is separated into two sub-chambers by a partition. Different components of the bone cement are contained in the partial chambers.
  • An ejection piston is provided to extrude both components from the cartridge. Rubber seals seal the piston from the inner wall and the partition.
  • the squeezing piston is pressed in the direction of an opening of the cartridge.
  • the squeezing piston has two cutting edges, by means of which the partition is cut into a strip.
  • a deflection surface in the plunger causes the cut strip to be deflected "outwards" towards an inner wall of the cartridge as the plunger moves in the direction of the opening.
  • a pasty mass can be pressed out of the cartridge by means of a hollow piston which is arranged in the cartridge.
  • the hollow piston has sealing lips with open pressure pockets that seal the hollow piston against the inner wall of the cartridge. If air pressure builds up in the part of the cartridge in which the pasty mass is arranged, a peripheral edge of the sealing lip is lifted off the inside wall of the cartridge. If, on the other hand, pressure from the open end of the cartridge acts on the piston, the peripheral edge is pressed against the inner wall of the cartridge.
  • the object of the invention is to propose a two- or multi-chamber cartridge with a reliable seal between one or more partitions and a cylinder on the one hand and a piston that can be displaced in the cylinder on the other hand, which allows the chambers of the cartridge to be filled without air pockets.
  • the subject of claim 8 is a method for filling such a multi-chamber cartridge.
  • the multi-chamber cartridge according to the invention has a cylinder which is divided into two or more chambers by one or more partitions, in which components of a flowable filling compound can be stored separately from one another.
  • the dividing wall/walls is/are arranged in particular in one or more axial planes and/or planes parallel to the axis in the cylinder, wherein the dividing wall/walls can also have a V-shaped or star-shaped cross section, for example. Longitudinal edges of the partition wall/walls are continuously connected to the cylinder in a longitudinal direction, in particular in a direction parallel to the axis, and are separated from the cylinder when a piston of the multi-chamber cartridge is displaced.
  • the piston preferably has a cutting edge for separating the partition wall/walls, the cutting edge being in particular in one piece and made of the same material as the rest of the piston.
  • a relatively hard material can be chosen since the piston itself does not seal.
  • the multi-chamber cartridge has seals that seal on both sides of the partition wall/walls between the partition wall and the cylinder on the one hand and the piston on the other hand.
  • the multi-chamber cartridge preferably has a seal for each chamber.
  • the seals are not part of the piston and in particular are not made in one piece with the piston. In particular, the seals are arranged on the piston, but in particular they are not attached to the piston.
  • the seals have ventilation devices for the chambers, which allow air to escape from the chambers of the multi-chamber cartridge when, after the chambers have been filled with free-flowing components of the filling compound, the seals are introduced into the cylinder through an open end of the cylinder in order to eliminate air pockets between the seals and the components of the filling compound.
  • the open end of the cylinder through which the seals are inserted is referred to herein as the "rear end”.
  • the seals can be placed on the piston and placed in the cylinder with the piston, or the seals can be placed in the cylinder in front of the piston.
  • the ventilation devices can be, for example, through-holes in the seals.
  • the seals are in particular plate-shaped and are arranged in a radial plane of the cylinder of the multi-chamber cartridge, the seals preferably moving with the piston.
  • the seals have a shape of cross-sectional areas of the chambers of the multi-chamber cartridge.
  • One embodiment of the invention provides that the seals, in particular circumferential edges, circumferential sealing lines or circumferential sealing surfaces of the seals, enclose the chambers or their cross sections in an annular manner and run on the inside along a section of the cylinder of the multi-chamber cartridge that encloses the respective chamber, as well as along the Run partition that separates the respective chamber from one or more other chambers in the cylinder of the multi-chamber cartridge.
  • the seals are in sealing contact with the sections of the cylinder surrounding the respective chamber and the partition wall associated with the respective chamber.
  • Elastomers with a Shore D hardness of not more than 70 and in particular not more than 55 and/or a Shore A hardness of not more than 90 have shown a good sealing function as seals.
  • the Shore hardness values refer to the February 2012 version of the DIN ISO 7619-1 standard.
  • the seals have sealing lips, which run annularly on the inside along the section of the cylinder of the multi-chamber cartridge that encloses the respective chamber and along the partition wall assigned to the chamber and bear sealingly on the inside against the section of the cylinder and the partition wall .
  • An annular cross-section of the sealing lips preferably extends in a displacement direction of the piston when the components of the filling compound are displaced from the cylinder of the multi-chamber cartridge.
  • a hydraulic pressure which arises when the components of the filling compound are pushed out of the cylinder, acts on the sealing lips from the inside against the cylinder and against the partition wall, as a result of which a reliable seal is achieved.
  • the annular cross-section of the sealing lips preferably runs obliquely in the displacement direction of the piston and outwards towards the cylinder or the partition wall.
  • One embodiment of the invention provides hoses as ventilation devices, which protrude from a rear side of the seals facing the rear end of the cylinder of the multi-chamber cartridge, and which are in particular integral components of the plate-shaped seals, for example.
  • the hoses can also be referred to as “venting domes”.
  • the ventilation devices can be closed before the piston is introduced into the cylinder.
  • the piston has accesses through which the venting devices are accessible for closing. Such accesses can, for example, be openings in the piston from its rear side facing the rear end of the cylinder of the multi-chamber cartridge to a front side of the piston, to the ends of the hoses forming the venting devices or to the venting devices.
  • the venting devices can be closed through the accesses when the seals and the piston are introduced into the cylinder of the multi-chamber cartridge, regardless of whether the seals are introduced into the cylinder in front of the piston or together with the piston.
  • the multi-chamber cartridge 1 according to the invention shown has a cylindrical tubular housing, which is referred to here as the cylinder 2 and in which a piston 3 is accommodated in an axially displaceable manner.
  • a partition 4 divides the cylinder 2 into a first and a second chamber 5, 6, in which flowable components of a filling compound (not shown) can be stored separately from one another.
  • the partition wall 4 is arranged in one or in several axial planes or planes parallel to the axis of the cylinder 2, so that the chambers 5, 6 have constant cross sections.
  • the partition wall 4 is V-shaped as in the end view of FIG figure 2 to see.
  • figure 2 shows a view into the open, rear end 21 of the cylinder 2 without the piston 3.
  • the partition wall 4 merges into the cylinder 2 in one piece at the longitudinal edges. It is also possible to weld the longitudinal edges of the partition wall 4 to the cylinder 2 or to connect them in some other way.
  • the multi-chamber cartridge 1 is a two-chamber cartridge with two chambers 5, 6 separated from one another by the partition 4.
  • Multi-chamber cartridges with more than two chambers are also possible, for example with cross-section T-shaped, cross-shaped, star-shaped and/or several strip-shaped partitions (not shown).
  • the cylinder 2 of the multi-chamber cartridge 1 has an end wall 7 in the form of a perforated disc, from the hole of which a tubular connecting piece protrudes as an outlet 8, which in the exemplary embodiment has an external thread 9 for screwing on a closure cap (not shown), an outlet nozzle (not shown) or a static mixer (not shown).
  • the end of the cylinder 2 with the outlet 8 is here called the front end 10 of the cylinder 2 and the multi-chamber cartridge 1 designated.
  • the partition wall 4 extends into the outlet 8, so that the outlet 8 is also divided into the two chambers 5, 6.
  • the piston 3 is a hollow piston with a piston wall 11 in the form of a cylindrical tube and a piston head 12 in the form of a circular disk, which is in one piece with the piston wall 11 .
  • the piston 3 has stiffening ribs 13 which, as in figure 3 to see, are star-shaped in the embodiment and with the piston wall 11 and the piston head 12 in one piece.
  • stiffening ribs 13 are also possible. Reinforcing ribs 13 of the piston 3 are not mandatory for the invention, and the piston 3 can fundamentally be designed differently than shown and described in the exemplary embodiment.
  • the piston 3 has side cutting edges 14 at the circumferential positions where the longitudinal edges of the bulkhead 4 are connected to the cylinder 2 at a front side, and a center cutting edge 15 at a center of the bulkhead 4 .
  • a side of the piston 3 facing the front end 10 of the multi-chamber cartridge 1 is referred to here as the front side of the piston 3 .
  • the side cutting edges 14 and the center cutting edge 15 are in one piece with the rest of the piston 3 and are made of the same material, which in the exemplary embodiment consists of a plastic of sufficient hardness to separate the partition wall 4 from the cylinder 2 and to separate the partition wall 4 into strips.
  • the piston head 12 has a slot 16, which in the exemplary embodiment is V-shaped like the cross section of the partition wall 4 and through which the partition wall 4, cut into strips, enters the piston 3, which is designed as a hollow piston, when the piston 3 moves in the direction of the front end 10 of cylinder 2 is shifted.
  • the slot 16 can be seen, in figure 1 Not.
  • the slot 16 is interrupted at the point where the central cutting edge 15 is located. In the flask 3, the strips of the partition wall 4 roll up or fold or clump together.
  • seals 17 are arranged in each chamber 5, 6, which seal the inside of the cylinder 2 and the partition wall 4.
  • the seals 17 are plate-shaped, arranged in a radial plane of the cylinder 2 and have a shape that corresponds to a cross section of the chambers 5,6.
  • the seals 17 have a circumferential, annular sealing lip 18 which protrudes obliquely in the direction of the front end 10 of the cylinder 2 and outwards on an inside of the cylinder 2 and on the partition wall 4 .
  • the sealing lip 18 bears sealingly on the inside against a section of the cylinder 2 enclosing the respective chamber 5 , 6 and against the partition wall 4 .
  • the seals 17 are made of a softer plastic or rubber than the piston 3 which is made of polybutylene terephthalate (PBT).
  • the seals 17 consist of an elastomer with a Shore D hardness of no more than 70 and in particular no more than 55 and/or with a Shore A hardness of no more than 90.
  • the hardness specifications relate to German Standard DIN ISO 7619-1 in the February 2012 version.
  • Hoses 19 whose holes pass through the seals 17 , protrude from the backs of the seals 17 , which are plate-shaped in the exemplary embodiment, from the seals 17 to the rear in the direction of a rear end 21 of the cylinder 2 .
  • the hoses 19 form ventilation domes.
  • the rear end 21 here is an end of the cylinder 2 which is opposite the front end 10 and is open for the insertion of the seals 17 and the piston 3 .
  • the hoses 19 are in one piece with the seals 17.
  • the rear sides of the seals 17 and the piston 3 are referred to here as the sides of the seals 17 and the piston 3 facing the rear end 21 of the cylinder 2.
  • the flowable components of the filling compound are preferably filled into the chambers 5, 6 through the open rear end 21 of the cylinder 2, and the seals 17 are inserted through the open rear end 21 of the cylinder 2 into the chambers 5, 6 introduced until they rest on the components of the filling compound.
  • air can escape from the chambers 5, 6 through the hoses 19 forming the ventilation devices 20, ie the chambers 5, 6 are vented and air pockets in the chambers 5, 6 are avoided.
  • the ventilation devices 20 are then closed, for example by welding, and the piston 3 is inserted through the open rear end 21 into the cylinder 2 introduced until the piston head 12 rests against the backs of the seals 17.
  • the piston crown 12 has through holes 22 through which the hoses 19 forming the ventilation devices 20 pass. It is also possible, for example, to have a piston head 12 without through-holes, which folds over the hoses 19 forming the ventilation devices 20 and thereby closes them when the piston 3 is inserted through the open rear end 21 into the cylinder 2 of the multi-chamber cartridge 1 until the piston head 12 on the rear sides of the seals 17 is present.
  • the seals 17 on the piston 3 and to introduce them into the cylinder 2 together with the piston 3 through the open rear end 21 .
  • the tubes 19 forming the venting means 20 are accessible for closure through accesses 23 in the piston 3, which are open at the rear of the piston 3 and reach the tubes 19.
  • the accesses 23 are cavities in the piston 3 between the stiffening ribs 13 and the piston wall 11.
  • FIG 4 are the venting devices 20 of the seals 17 forming hoses 19 approximately as long as the piston 3 is long in the axial direction, so that the hoses 19 reach to the rear of the piston 3 and are accessible there for closure when the piston 3 through the open rear end 21 has been introduced into the cylinder 2 of the multi-chamber cartridge 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Coating Apparatus (AREA)
EP20172635.3A 2019-05-21 2020-05-04 Mehrkammerkartusche und verfahren zu ihrer befüllung Active EP3741469B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019113410.2A DE102019113410A1 (de) 2019-05-21 2019-05-21 Mehrkammerkartusche und Verfahren zu ihrer Befüllung

Publications (2)

Publication Number Publication Date
EP3741469A1 EP3741469A1 (de) 2020-11-25
EP3741469B1 true EP3741469B1 (de) 2022-06-08

Family

ID=70861190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20172635.3A Active EP3741469B1 (de) 2019-05-21 2020-05-04 Mehrkammerkartusche und verfahren zu ihrer befüllung

Country Status (3)

Country Link
EP (1) EP3741469B1 (pl)
DE (1) DE102019113410A1 (pl)
PL (1) PL3741469T3 (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021130023A1 (de) 2021-11-17 2023-05-17 Fischerwerke Gmbh & Co. Kg Kartusche zum Befüllen und befüllte Kartusche

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005855A1 (de) * 1980-02-16 1981-08-20 Alfred Fischbach Kg Kunststoff-Spritzgusswerk, 5250 Engelskirchen Bodenverschluss fuer einen hohlzylindrischen strangpressbehaelter
US4493436A (en) 1983-03-16 1985-01-15 Loctite Corporation Compartmental cartridge
US5209376A (en) * 1992-03-13 1993-05-11 The Procter & Gamble Company Co-dispensing pump for fluent materials
DE102016104410A1 (de) * 2016-03-10 2017-09-14 Heraeus Medical Gmbh Lagerungs- und Mischsystem für pastenförmige Zementkomponenten und Verfahren dafür

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DE102019113410A1 (de) 2020-11-26
PL3741469T3 (pl) 2022-10-03
EP3741469A1 (de) 2020-11-25

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