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WO1999036188A1 - Deaerating device - Google Patents

Deaerating device Download PDF

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Publication number
WO1999036188A1
WO1999036188A1 PCT/EP1998/008502 EP9808502W WO9936188A1 WO 1999036188 A1 WO1999036188 A1 WO 1999036188A1 EP 9808502 W EP9808502 W EP 9808502W WO 9936188 A1 WO9936188 A1 WO 9936188A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
venting device
pocket
deaerating
open
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.)
Ceased
Application number
PCT/EP1998/008502
Other languages
German (de)
French (fr)
Inventor
Eugen Prestele
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE59805244T priority Critical patent/DE59805244D1/en
Priority to EP98966418A priority patent/EP0966331B1/en
Publication of WO1999036188A1 publication Critical patent/WO1999036188A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B05C17/00576—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
    • B05C17/00576—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
    • 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
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means

Definitions

  • the invention relates to a ventilation device for removing the residual air when inserting a piston into a filled cartridge with a ventilation opening running from the piston surface into the open.
  • pistons are inserted into filled cartridges, it is necessary to remove the residual air between the filling material and the piston. It is known to simultaneously insert a wire between the piston and the wall of the cartridge when inserting the piston, so that the residual air is pressed out in the area of the wire when the piston is inserted. This residual air removal is very time consuming and also involves the risk that the sealing lips on the piston can be damaged.
  • vent valves on the piston which are opened when the piston is inserted into the cartridge by means of a specially shaped piston push-in ram.
  • This requires specially adapted press-in tappets and requires relatively narrow manufacturing tolerances for the ventilation valves.
  • These vent valves have also proven to be prone to failure.
  • the object is to design the ventilation device in such a way that ventilation when inserting the piston is possible without additional manipulations. This object is achieved with the features of claim 1. Advantageous refinements can be found in the subclaims.
  • FIG. 1 shows a section through the open cartridge end and through a piston.
  • Fig. 2 is a plan view of this piston
  • Fig. 4 shows a section through an annular piston for a two-component cartridge.
  • the piston 1 is inserted into the open end of a cartridge 2, which was previously filled.
  • the piston 1 has sealing lips 3, 4 at both ends, the elasticity of the sealing lip 3 facing the cartridge 2 being achieved by a circumferential incision 5.
  • a vent opening 7 is provided in the center of the piston surface 6 and widens towards the underside of the piston.
  • a cylindrical micropore filter 9 is inserted into this pocket 8. It is a porous filter as it is known in medical technology for the filtration of liquids.
  • This micropore filter 9 preferably consists of a sintered material made of plastic, for example of PE or PTFE with a pore size of 10 ⁇ m to 80 ⁇ m. The sintered material has open pores.
  • the pocket 8 can also be formed by the cylindrical wall 10 of the piston 1.
  • FIG. 4 shows a section through an annular piston of a two-component coaxial cartridge.
  • This piston is provided with a cylindrical pocket 8 which is open at the top and which has a base 11 on its side facing away from the piston side, on which the ventilation opening 7 is formed.
  • the microporous filter 9 is inserted into this pocket 8.
  • the piston 1 consists of a soft plastic that is not resistant to the filling material and is not diffusion-tight
  • a thin cover disk can be attached to the upper side of the piston, which consists of a material that is diffusion-proof and resistant to the filling material.
  • This cover plate is provided with a large number of small ventilation openings. In the case of the embodiment according to FIG. 4, this cover plate is annular. It not only protects the piston against the filling material, but also prevents the filter 9 from coming into direct contact with the filling material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Compressor (AREA)
  • External Artificial Organs (AREA)
  • Massaging Devices (AREA)
  • Arc Welding In General (AREA)

Abstract

The invention relates to a deaerating device for eliminating the residual air when a piston (1) is introduced into a full cartridge (2), comprising at least one deaerating opening (7) which extends from the piston surface (6) to the outside. Deaerating devices of this type have been shown to be prone to defects and also require specially adapted plungers. The aim of the invention is to configure the deaerating device in such a way that the deaeration takes place when the piston is introduced without any additional manipulation. To this end, a pocket (8) in which a microporous filter (9) is placed is formed on the surface (6) of the piston in the area of the deaerating opening (7).

Description

Entlüftungsvorrichtung Venting device

Die Erfindung betrifft eine Entlüftungsvorrichtung zum Entfernen der Restluft beim Einsetzen eines Kolbens in eine gefüllte Kartusche mit einer von der Kolbenoberfläche ins Freie verlaufenden Entlüftungsöffhung.The invention relates to a ventilation device for removing the residual air when inserting a piston into a filled cartridge with a ventilation opening running from the piston surface into the open.

Werden Kolben in gefüllte Kartuschen eingesetzt, dann ist es erforderlich, die Restluft zwischen dem Füllmaterial und dem Kolben zu entfernen. Hierbei ist es bekannt, beim Einsetzen des Kolbens gleichzeitig einen Draht zwischen dem Kolben und der Wand der Kartusche einzuführen, so daß die Restluft beim Einsetzen des Kolbens im Bereich des Drahtes herausgedrückt wird. Diese Restluftbeseitigung ist sehr zeitaufwendig und beinhaltet zudem die Gefahr, daß die Dichtlippen am Kolben beschädigt werden können.If pistons are inserted into filled cartridges, it is necessary to remove the residual air between the filling material and the piston. It is known to simultaneously insert a wire between the piston and the wall of the cartridge when inserting the piston, so that the residual air is pressed out in the area of the wire when the piston is inserted. This residual air removal is very time consuming and also involves the risk that the sealing lips on the piston can be damaged.

Es ist weiterhin bekannt, am Kolben Entlüftungsöffhungen vorzusehen, über welche beim Einsetzen des Kolbens die Restluft entweichen kann. Diese Entlüftungsöffhungen werden anschließend durch Verschlußteile verschlossen. Diese Art der Restluftbeseitigung ist jedoch sehr zeitaufwendig.It is also known to provide ventilation openings on the piston through which the residual air can escape when the piston is inserted. These vents are then closed by closure parts. However, this type of residual air removal is very time consuming.

Desweiteren ist es bekannt, am Kolben Entlüftungsventile vorzusehen, die beim Einsetzen des Kolbens in die Kartusche mittels speziell geformter Kolben- Eindrückstössel geöffnet werden. Dies bedingt speziell angepaßte Eindrückstössel und erfodert relativ enge Fertigungstoleranzen bei den Entlüftungsventilen. Diese Entlüftungsventile haben sich zudem als störanfällig erwiesen.Furthermore, it is known to provide vent valves on the piston which are opened when the piston is inserted into the cartridge by means of a specially shaped piston push-in ram. This requires specially adapted press-in tappets and requires relatively narrow manufacturing tolerances for the ventilation valves. These vent valves have also proven to be prone to failure.

Es besteht die Aufgabe, die Entlüftungsvorrichtung so auszubilden, daß ein Entlüften beim Einsetzen des Kolbens ohne zusätzliche Manipulationen möglich ist. Gelöst wird diese Aufgabe mit den Merkmalen des Anspruches 1- Vorteilhafte Ausgestaltungen sind den Unteransprüchen entnehmbar.The object is to design the ventilation device in such a way that ventilation when inserting the piston is possible without additional manipulations. This object is achieved with the features of claim 1. Advantageous refinements can be found in the subclaims.

Ausführungsbeispiele werden nachfolgend an Hand der Zeichnungen näher erläutert. Es zeigen:Exemplary embodiments are explained in more detail below with reference to the drawings. Show it:

Fig. 1 einen Schnitt durch das offene Kartuschenende und durch einen Kolben;1 shows a section through the open cartridge end and through a piston.

Fig. 2 eine Draufsicht auf diesen Kolben;Fig. 2 is a plan view of this piston;

Fig. 3 eine Seitenansicht und eine Draufsicht auf das Mikroporenfilter; und3 shows a side view and a top view of the micropore filter; and

Fig. 4 einen Schnitt durch einen Ringkolben für eine Zweikomponenten-Kartusche.Fig. 4 shows a section through an annular piston for a two-component cartridge.

Gemäß Figur 1 wird der Kolben 1 in das offene Ende einer Kartusche 2 eingesetzt, welche zuvor befüllt wurde. An beiden Enden weist der Kolben 1 Dichtlippen 3, 4 auf, wobei die Elastizität der der Kartusche 2 zugewandten Dichtlippe 3 erzielt wird durch einen umlaufenden Einschnitt 5.According to Figure 1, the piston 1 is inserted into the open end of a cartridge 2, which was previously filled. The piston 1 has sealing lips 3, 4 at both ends, the elasticity of the sealing lip 3 facing the cartridge 2 being achieved by a circumferential incision 5.

An der Kolbenoberfläche 6 ist mittig eine Entlüftungsöffhung 7 vorgesehen, die sich zur Kolbenunterseite hin erweitert. Am Kolben 1 ist angeformt eine die Entlüftungsöffnung 7 umgebende zylindrische Tasche 8, die zur Kolbenunterseite hin offen ist. In diese Tasche 8 ist ein zylindrisches Mikroporenfilter 9 eingesetzt. Es handelt sich hierbei um ein poröses Filter, wie es in der Medizintechnik zur Filtration von Flüssigkeiten bekannt ist. Bevorzugt besteht dieses Mikroporenfilter 9 aus einem Sintermaterial aus Kunststoff, beispielsweise aus PE oder PTFE mit einer Porengröße von 10 μm bis 80 μm. Das Sintermaterial weist offene Poren auf.A vent opening 7 is provided in the center of the piston surface 6 and widens towards the underside of the piston. A cylindrical pocket 8, which surrounds the ventilation opening 7 and is open on the underside of the piston, is integrally formed on the piston 1. A cylindrical micropore filter 9 is inserted into this pocket 8. It is a porous filter as it is known in medical technology for the filtration of liquids. This micropore filter 9 preferably consists of a sintered material made of plastic, for example of PE or PTFE with a pore size of 10 μm to 80 μm. The sintered material has open pores.

Beim Einschieben des Kolbens 1 in die Kartusche 2 kann die Restluft entweichen über die Entlüftungsöffhung 7 und das Mikroporenfilter 9. Infolge der geringen Porengröße kann jedoch das in die Kartusche 2 eingefüllte Medium nicht austreten. Auf diese Weise ist eine sichere Entlüftungsmöglichkeit gegeben, ohne die Gefahr von Funktionsstörungen und dem Risiko von Bauteilebeschädigungen. Dem Abfüller der Kartuschen wird jegliches zusätzliche Handling erspart.When the piston 1 is pushed into the cartridge 2, the residual air can escape through the ventilation opening 7 and the micropore filter 9. However, due to the small pore size, the medium filled into the cartridge 2 cannot escape. In this way, there is a safe venting possibility without the risk of malfunctions and the risk of component damage. The cartridge filler is spared any additional handling.

Die Tasche 8 kann auch gebildet werden durch die zylindrische Wand 10 des Kolbens 1.The pocket 8 can also be formed by the cylindrical wall 10 of the piston 1.

Die Figur 4 zeigt einen Schnitt durch einen Ringkolben einer Zweikomponenten- Koaxialkartusche. Dieser Kolben ist mit einer oben offenen zylindrischen Tasche 8 versehen, die an ihrer zur Kolbenseite hin abgewandten Seite einen Boden 11 aufweist, an welchen die Entlüftungsöffhung 7 angeformt ist. In dieser Tasche 8 ist das Mikroporenfilter 9 eingesetzt.FIG. 4 shows a section through an annular piston of a two-component coaxial cartridge. This piston is provided with a cylindrical pocket 8 which is open at the top and which has a base 11 on its side facing away from the piston side, on which the ventilation opening 7 is formed. The microporous filter 9 is inserted into this pocket 8.

Besteht der Kolben 1 aus einem weichen, gegen das Füllmaterial nicht resistenten und nicht diffusionsdichten Kunststoff, dann kann auf der Kolbenoberseite eine dünne Abdeckscheibe befestigt werden, die aus einem gegenüber dem Füllmaterial diffusionsdichten und gegen das Füllmaterial resistenten Material besteht. Diese Abdeckscheibe ist mit einer Vielzahl kleiner Entlüftungsöffhungen versehen. Im Fall der Ausfuhrungsform nach Figur 4 ist diese Abdeckscheibe ringförmig. Sie schützt nicht nur den Kolben gegen das Füllmaterial, sondern verhindert auch, daß das Filter 9 in direkte Berührung mit dem Füllmaterial kommt. If the piston 1 consists of a soft plastic that is not resistant to the filling material and is not diffusion-tight, then a thin cover disk can be attached to the upper side of the piston, which consists of a material that is diffusion-proof and resistant to the filling material. This cover plate is provided with a large number of small ventilation openings. In the case of the embodiment according to FIG. 4, this cover plate is annular. It not only protects the piston against the filling material, but also prevents the filter 9 from coming into direct contact with the filling material.

Claims

Ansprüche Expectations 1. Entlüftungsvorrichtung zum Entfernen der Restluft beim Einsetzen eines Kolbens (1) in eine gefüllte Kartusche (2) mit mindestens einer von der Kolbenoberfläche (6) ins Freie verlaufenden Entlüftungsöffhung (7), dadurch gekennzeichnet, daß an der Kolbenoberfläche (6) im Bereich der Entlüftungsöffhung (7) eine Tasche (8) angeformt ist, in welcher ein Mikroporenfilter (9) angeordnet ist.1. Venting device for removing the residual air when inserting a piston (1) into a filled cartridge (2) with at least one vent opening (7) extending from the piston surface (6), characterized in that on the piston surface (6) in the area a pocket (8) is formed on the ventilation opening (7), in which a microporous filter (9) is arranged. 2. Entlüftungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Tasche (8) an der Kolbenunterseite angeformt ist.2. Venting device according to claim 1 or 2, characterized in that the pocket (8) is integrally formed on the underside of the piston. 3. Entlüftungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Tasche (8) zylindrisch ausgebildet und zur Kolbenunterseite hin offen ist.3. Venting device according to claim 1 or 2, characterized in that the pocket (8) is cylindrical and is open towards the underside of the piston. 4. Entlüfungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Tasche (8) zylindrisch ausgebildet ist, zur Kolbenoberseite hin offen ist und an der der Kolbenoberseite hin abgewandten Seite einen Boden (11) mit der Entlüftungsöffhung (7) aufweist.4. Venting device according to claim 1 or 2, characterized in that the pocket (8) is cylindrical, is open to the top of the piston and on the side facing away from the top of the piston has a bottom (11) with the vent opening (7). 5. Entlüftungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Tasche (8) von der Kolbenwand (10) gebildet wird.5. Venting device according to claim 1, characterized in that the pocket (8) is formed by the piston wall (10). 6. Entlüftungsvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Mikroporenfilter (8) aus einem Kunststoffsintermaterial besteht.6. Venting device according to one of claims 1 to 5, characterized in that the micropore filter (8) consists of a plastic sintered material. 7. Entlüftungsvorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das Kunststoffsintermaterial aus PE bzw. PTFE besteht. 7. Venting device according to claim 6, characterized in that the plastic sintered material consists of PE or PTFE. 8. Entlüftungsvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das offenporige Mikroporenfilter (9) eine Porengröße zwischen 10 und 80 μm aufweist.8. Venting device according to one of claims 1 to 7, characterized in that the open-pore micropore filter (9) has a pore size between 10 and 80 microns. 9. Entlüfungsvorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Kolbenoberseite von einer dünnen, eine Vielzahl von kleinen Entlüftungsöffhungen aufweisenden Abdeckscheibe abgedeckt ist. 9. Venting device according to one of claims 1 to 8, characterized in that the piston top is covered by a thin, a plurality of small ventilation openings having a cover plate.
PCT/EP1998/008502 1998-01-15 1998-12-28 Deaerating device Ceased WO1999036188A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59805244T DE59805244D1 (en) 1998-01-15 1998-12-28 Piston for insertion in a filled cartridge
EP98966418A EP0966331B1 (en) 1998-01-15 1998-12-28 Piston for inserting into a filled cartouche

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29800594.8 1998-01-15
DE29800594U DE29800594U1 (en) 1998-01-15 1998-01-15 Venting device

Publications (1)

Publication Number Publication Date
WO1999036188A1 true WO1999036188A1 (en) 1999-07-22

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ID=8051282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/008502 Ceased WO1999036188A1 (en) 1998-01-15 1998-12-28 Deaerating device

Country Status (3)

Country Link
EP (1) EP0966331B1 (en)
DE (2) DE29800594U1 (en)
WO (1) WO1999036188A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001009006A1 (en) * 1999-07-31 2001-02-08 Sulzer Chemtech Ag Piston for a cartridge
DE10235599A1 (en) * 2002-08-02 2004-02-19 Ritter Gmbh Vented plunger for dispenser cartridges of plastics masses is one-piece injection moulded plastics part with front and rear parts connected by connector through film hinges with vent to fold and concertina to produce closed plunger
CN102753441A (en) * 2009-12-22 2012-10-24 苏舍米克斯帕克有限公司 Piston setting device, a system comprising such a device and method for setting a piston in a cartridge

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20010417U1 (en) 2000-06-09 2001-10-11 Sulzer Chemtech Ag, Winterthur Bleeding device for a piston for a cartridge
DE20103911U1 (en) * 2001-03-06 2002-07-11 Alusuisse Bayrisches Druckguß-Werk GmbH & Co. KG, 85570 Markt Schwaben Sealant bottle
DE20117778U1 (en) 2001-10-31 2003-03-20 Sulzer Chemtech Ag, Winterthur Cartridge piston with ventilation
JP2009511376A (en) 2005-10-14 2009-03-19 スリーエム イノベイティブ プロパティズ カンパニー Plunger for cartridge and plunger assembly, system for storing substance, and method for filling and sealing substance in delivery system
USD657876S1 (en) 2010-02-02 2012-04-17 3M Innovative Properties Company Dental capsule
EP3299082A1 (en) 2016-09-21 2018-03-28 3M Innovative Properties Company Mixer assembly and device for dispensing a dental material

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2531322B1 (en) * 1974-09-04 1977-01-13 Fischbach Alfred Kg Kunststoff AS EXPRESSION PISTON FOR TOUGH PLASTIC MASSES A BOTTOM SEAL MADE OF ELASTIC MATERIAL FOR A HOLLOW CYLINDER EXTRUDED CONTAINER
US4405249A (en) * 1980-03-28 1983-09-20 National Research Development Corporation Dispensing apparatus and method
EP0397589A1 (en) * 1989-05-12 1990-11-14 Wolff & Kaaber A/S A method and device for preparing a mixture of a solid and a liquid component
US5181918A (en) * 1990-08-10 1993-01-26 Thera Patent Gmbh & Co. Kg Gesellschaft Fuer Industrielle Schutzrechte Granules syringe
US5242091A (en) * 1991-11-21 1993-09-07 Dow Corning Toray Silicone Co., Ltd. Sealant cartridge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2531322B1 (en) * 1974-09-04 1977-01-13 Fischbach Alfred Kg Kunststoff AS EXPRESSION PISTON FOR TOUGH PLASTIC MASSES A BOTTOM SEAL MADE OF ELASTIC MATERIAL FOR A HOLLOW CYLINDER EXTRUDED CONTAINER
US4405249A (en) * 1980-03-28 1983-09-20 National Research Development Corporation Dispensing apparatus and method
EP0397589A1 (en) * 1989-05-12 1990-11-14 Wolff & Kaaber A/S A method and device for preparing a mixture of a solid and a liquid component
US5181918A (en) * 1990-08-10 1993-01-26 Thera Patent Gmbh & Co. Kg Gesellschaft Fuer Industrielle Schutzrechte Granules syringe
US5242091A (en) * 1991-11-21 1993-09-07 Dow Corning Toray Silicone Co., Ltd. Sealant cartridge

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001009006A1 (en) * 1999-07-31 2001-02-08 Sulzer Chemtech Ag Piston for a cartridge
DE10235599A1 (en) * 2002-08-02 2004-02-19 Ritter Gmbh Vented plunger for dispenser cartridges of plastics masses is one-piece injection moulded plastics part with front and rear parts connected by connector through film hinges with vent to fold and concertina to produce closed plunger
CN102753441A (en) * 2009-12-22 2012-10-24 苏舍米克斯帕克有限公司 Piston setting device, a system comprising such a device and method for setting a piston in a cartridge
CN102753441B (en) * 2009-12-22 2014-10-29 苏舍米克斯帕克有限公司 Piston setting device, a system comprising such a device and method for setting a piston in a cartridge

Also Published As

Publication number Publication date
EP0966331A1 (en) 1999-12-29
EP0966331B1 (en) 2002-08-21
DE29800594U1 (en) 1998-03-26
DE59805244D1 (en) 2002-09-26

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