EP1116670A1 - Piston for closing a cartridge - Google Patents

Piston for closing a cartridge Download PDF

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Publication number
EP1116670A1
EP1116670A1 EP00810833A EP00810833A EP1116670A1 EP 1116670 A1 EP1116670 A1 EP 1116670A1 EP 00810833 A EP00810833 A EP 00810833A EP 00810833 A EP00810833 A EP 00810833A EP 1116670 A1 EP1116670 A1 EP 1116670A1
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EP
European Patent Office
Prior art keywords
piston
cylindrical
cartridge
container part
bevel
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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.)
Granted
Application number
EP00810833A
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German (de)
French (fr)
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EP1116670B1 (en
Inventor
Willy Stössel
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Stebler and Co AG
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Stebler and Co AG
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Publication of EP1116670A1 publication Critical patent/EP1116670A1/en
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    • 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
    • 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
    • B65D2205/00—Venting means
    • B65D2205/04—Venting means for venting during the initial insertion of a piston

Definitions

  • the invention relates to a piston for closing or sealing a cartridge, namely a piston according to the preamble of claim 1.
  • Cartridges are used to hold a flowable material determined and used for example everywhere there where at most a moisture-sensitive, flowable Material in portions in grooves, joints and the like must be applied.
  • Those in construction and in industry Cartridges used today are mainly made of aluminum manufactured. They have a cylindrical container part with an outlet nozzle arranged at the front end and one in the rear end opening used and movable in the longitudinal direction of the cartridge Piston for sealing the cartridge interior and dispensing of the flowable material.
  • the material usually becomes a hand-operated injection gun used with a plunger that fits the piston Using the cartridge, push the plunger toward the outlet port shifts.
  • the invention is based on the object, a new one To create pistons for cartridges of the aforementioned type, which allows fluid and gas-tight sealing to simplify the cartridge so that spreading, i.e. on the additional use of a spreading device can be.
  • the new piston also called press piston below, is essentially characterized by the fact that it is one-sided is formed closed cylinder, the outer Diameter is at least as large as the inside diameter of the cylindrical container part.
  • the invention Piston is so dimensioned that it already fits snugly into the container part. This is not possible without additional effort, can be but without further ado using a conventional, axially working Carry out the pressing device. The advantage of this The procedure is obvious. So it can be done afterwards Spreading the piston using a specially created one Device are dispensed with.
  • the cylindrical shell of the invention Piston so with at least one from the front wall outgoing chamfer that when pressing of the piston in the container part of the cartridge the least a bevel together with the cylindrical wall of the container part briefly forms a passage through which the Air displaced by the piston can escape to the outside, and that this does not adversely affect the tightness of the cartridge influencing overpressure arises in the interior of the cartridge and in particular no residual air remains in the cartridge, that triggers a chemical reaction, for example one unwanted hardening of the flowable material within of the container part.
  • the press pistons according to the invention preferably consist made of metallic material, for example tinplate or Aluminum.
  • the bevels according to the invention do not include the entire circumference of the cylindrical shell and are - like from can be seen from the drawing explained below - essentially dent-like indentations of the cylindrical Coat.
  • the cartridge shown in Figure 1 is a whole designated 1 and has a cylindrical container part 2 to hold a flowable material, such as a sealant containing polyurethane.
  • the container part 2 has an end face 3 with an outlet nozzle 4.
  • the latter preferably has an external thread 4a which for use of the cartridge 1 is not shown Outlet tip is screwed on.
  • the end 5 of the container part opposite the end face 3 2 is open and comes after filling the cartridge 1 with the press piston 6 according to the invention in a fluid and gas tight manner locked.
  • the plunger 6 drawn on an enlarged scale in FIGS. 2 and 3 is preferably made of aluminum and has an end wall 7 which is intended to face the outlet 4 of the cartridge 1 and an essentially cylindrical jacket 8 with the length l 1 .
  • the latter is divided into a first cylinder section 9 and 10 facing away from the end wall 7 and a second cylinder section facing the end wall 7.
  • the wall thickness of the plunger 6 is 0.2 mm - 1 mm, but preferably 0.4 mm. So that fluid and gas-tight Closure of the cartridge interior is not a retrofit Spreading of the piston 6 is necessary, it has one outer diameter, which is at least as large as the inside diameter of the cylindrical container part 2, but at most about 2%, for example 1%, is greater than this.
  • the second cylinder section 10 with six symmetrical around bevels arranged around the circumference of the cylinder section 10 11 provided, starting from the front edge 7a extend over the entire length of the cylinder section 10 and with increasing distance from the rounded Front edge 7a become narrower.
  • the length L 2 of the second cylinder section 10 is preferably chosen so that the relationship 1/4 L 1 ⁇ L 2 ⁇ 2/3 L 1 is satisfied. It is the length 1 2 of the cylinder section 10 in any case at least 1/4 and at most 2/3 of the total length l 1 .
  • the cylinder section 9 essentially serves as a seal of the cartridge interior. It must therefore have an outer surface which is so large that the cartridge interior also optimally sealed when moving the piston 6 is.
  • the cylinder section 9 is therefore preferred at least the same size as the cylinder section 10.
  • the jacket 8 as a whole must also be so long that the piston 6 when pressing the material out of the Cartridge 1 maintains its axial orientation and itself not at an angle.
  • the plunger 6 on its end face 7 a central, circular Bulge 12 and six radially arranged and from the bulge 12 has outwardly extending notches 13, which in turn are so symmetrically aligned that their axial extensions between two neighboring ones Bevels 11 come to rest.
  • Both the bulge 12 and the notches 13 serve essentially to a form-stable and stable end wall 7 to form the pressure the spray gun used to hold the cartridge Holds up.
  • the in the rear end section 5 additionally has a wax layer container part 2 filled with flowable material.
  • the container part 2 is then one of the filling or press assigned to the closing street, with which a piston 6 in the open end portion 5 of the container part 2 is pressed.
  • the material of container part 2 and Piston 6 is also coordinated so that if the Outside diameter of the piston 6 is a little bit larger than the inside diameter of the container part is the cylindrical Wall of the container part when the piston 6 is pressed in somewhat deformed and expanding.
  • Both the wall thicknesses and the dimensions of the interior or outer diameter of container part 2 and piston 6 are coordinated so that they are fluid and gas tight Closure is guaranteed. It is therefore the aforementioned wall thicknesses and dimensions of the inventive Press piston experience based on numerous Test attempts result and with different choice of Can differentiate material and cartridge size. It can therefore pistons according to the invention from the illustrated embodiment have different shapes and dimensions.

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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)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The piston comprises a cylindrical side wall (8) which is at least as large as the internal diameter of the container, the side wall having typically four or six bevels (11). The bevels are dimensioned so that the piston can be press fitted into the container, the bevel and container wall briefly forming a passage through which the air is displaced by the piston can escape. The piston may be made of aluminum, and the length of the bevel is between one quarter and two thirds the total length of the piston side wall.

Description

Die Erfindung betrifft einen Kolben zum Verschliessen bzw. Abdichten einer Kartusche, nämlich einen Kolben gemäss dem Oberbegriff des Anspruchs 1.The invention relates to a piston for closing or sealing a cartridge, namely a piston according to the preamble of claim 1.

Kartuschen sind zur Aufnahme eines fliessfähigen Materials bestimmt und werden zum Beispiel überall dort eingesetzt, wo ein allenfalls feuchtigkeitsempfindliches, fliessfähiges Material portionenweise in Rillen, Fugen und dergleichen appliziert werden muss. Die auf dem Bau und in der Industrie eingesetzten Kartuschen werden heute vor allem aus Aluminium hergestellt. Sie besitzen einen zylindrischen Behälterteil mit einem am vorderen stirnseitigen Ende angeordnete Auslass-Stutzen und einem in die Öffnung des hinteren Endes eingesetzten und in Längsrichtung der Kartusche beweglichen Kolben zum Abdichten des Kartuschen-Innenraumes und Ausbringen des fliessfähigen Materials. Zum Ausbringen des Materials wird üblicherweise eine von Hand bedienbare Injektionspistole mit einem zum Kolben passenden Stempel verwendet, der bei der Verwendung der Kartusche den Kolben in Richtung Auslass-Stutzen verschiebt.Cartridges are used to hold a flowable material determined and used for example everywhere there where at most a moisture-sensitive, flowable Material in portions in grooves, joints and the like must be applied. Those in construction and in industry Cartridges used today are mainly made of aluminum manufactured. They have a cylindrical container part with an outlet nozzle arranged at the front end and one in the rear end opening used and movable in the longitudinal direction of the cartridge Piston for sealing the cartridge interior and dispensing of the flowable material. For spreading the material usually becomes a hand-operated injection gun used with a plunger that fits the piston Using the cartridge, push the plunger toward the outlet port shifts.

Bei einem bekannten Verfahren zur Verschliessung von abgefüllten Kartuschen wird die Innenwand des zylindrischen Behälterteils im Bereich des hinteren Endabschnittes mit einer als Dichtungsmittel dienenden umlaufenden Wachsschicht versehen, und es wird anschliessend in den Behälterteil ein Kolben eingesetzt, dessen Aussendurchmesser kleiner ist, als der Innendurchmesser des Behälterteils. Dies hat den Vorteil, dass beim Einsetzen des Kolbens die im Kartuschen-Innenraum enthaltene und durch den Kolben verdrängte Luft problemlos nach aussen entweichen kann, dafür aber den Nachteil, dass der so in den Behälterteil eingesetzte Kolben zur fluid- und gasdichten Verschliessung nachträglich noch mit dem Behälterteil verpresst, d.h. gespreizt, werden muss, was üblicherweise mittels einer speziell dafür vorgesehenen Spreizvorrichtung erfolgt.In a known method for closing filled Cartridges become the inner wall of the cylindrical container part in the area of the rear end section with a provided as a circumferential wax layer serving as a sealant, and it then becomes a piston in the container part used, whose outer diameter is smaller than the inner diameter of the container part. This has the advantage that when inserting the piston, the one contained in the cartridge interior and air displaced by the piston easily can escape outside, but the disadvantage that the so Pistons inserted in the container part for fluid and gas tight Subsequent closure with the container part pressed, i.e. must be spread, which is usually using a specially designed spreader he follows.

Der Erfindung liegt nun die Aufgabe zugrunde, einen neuen Kolben für Kartuschen der vorstehend genannten Art zu schaffen, der es erlaubt, das fluid- und gasdichte Verschliessen der Kartusche so zu vereinfachen, dass auf das Spreizen, d.h. auf den zusätzlichen Einsatz einer Spreizvorrichtung, verzichtet werden kann.The invention is based on the object, a new one To create pistons for cartridges of the aforementioned type, which allows fluid and gas-tight sealing to simplify the cartridge so that spreading, i.e. on the additional use of a spreading device can be.

Diese Aufgabe wird durch einen Kolben mit den Merkmalen des Patentanspruchs 1 gelöst.This task is accomplished by a piston with the characteristics of claim 1 solved.

Vorteilhafte Ausführungsformen der Erfindung sind Gegenstand der abhängigen Ansprüche.Advantageous embodiments of the invention are the subject of the dependent claims.

Der neue Kolben, nachfolgend auch Presskolben genannt, zeichnet sich im wesentlichen dadurch aus, dass er als einseitig geschlossener Zylinder ausgebildet ist, dessen äusserer Durchmesser mindestens ebenso gross ist, wie der Innendurchmesser des zylindrischen Behälterteils. Der erfindungsgemässe Kolben ist also so dimensioniert, dass er bereits satt passend in den Behälterteil eingesetzt wird. Dies ist zwar nicht ohne zusätzlichen Kraftaufwand möglich, lässt sich aber ohne weiteres mittels einer herkömmlichen, axial arbeitenden Pressvorrichtung bewerkstelligen. Der Vorteil dieser Vorgehensweise liegt auf der Hand. So kann auf das nachträgliche Spreizen des Kolbens mittels einer speziell dafür geschaffenen Vorrichtung verzichtet werden. The new piston, also called press piston below, is essentially characterized by the fact that it is one-sided is formed closed cylinder, the outer Diameter is at least as large as the inside diameter of the cylindrical container part. The invention Piston is so dimensioned that it already fits snugly into the container part. This is not possible without additional effort, can be but without further ado using a conventional, axially working Carry out the pressing device. The advantage of this The procedure is obvious. So it can be done afterwards Spreading the piston using a specially created one Device are dispensed with.

Darüber hinaus ist der zylindrische Mantel des erfindungsgemässen Kolbens so mit mindestens einer von der Stirnwand ausgehenden Anschrägung versehen, dass beim Einpressen des Kolbens in den Behälterteil der Kartusche die mindestens eine Anschrägung zusammen mit der zylindrischen Wand des Behälterteils kurzzeitig einen Durchgang bildet, durch den die vom Kolben verdrängte Luft nach aussen entweichen kann, und dass dadurch kein die Dichtigkeit der Kartusche nachteilig beeinflussender Überdruck im Kartuschen-Innenraum entsteht und insbesondere keine Restluft in der Kartusche verbleibt, die eine chemische Reaktion auslöst, beispielsweise eine unerwünschte Aushärtung des fliessfähigen Materials innerhalb des Behälterteils.In addition, the cylindrical shell of the invention Piston so with at least one from the front wall outgoing chamfer that when pressing of the piston in the container part of the cartridge the least a bevel together with the cylindrical wall of the container part briefly forms a passage through which the Air displaced by the piston can escape to the outside, and that this does not adversely affect the tightness of the cartridge influencing overpressure arises in the interior of the cartridge and in particular no residual air remains in the cartridge, that triggers a chemical reaction, for example one unwanted hardening of the flowable material within of the container part.

Die erfindungsgemässen Presskolben bestehen vorzugsweise aus metallischem Material, zum Beispiel aus Weissblech oder Aluminium.The press pistons according to the invention preferably consist made of metallic material, for example tinplate or Aluminum.

Es ist zweckmässig, mindestens zwei, vorzugsweise vier oder sechs, symmetrisch zueinander angeordnete Anschrägungen vorzusehen. Eine derartige Ausbildung des erfindungsgemässen Presskolbens führt zu einer optimalen Entlüftung der Kartusche beim Einpressen des Kolbens in den Behälterteil, und dies bei gleichbleibenden Festigkeits- und Dichtungseigenschaften, so dass die Lagerbeständigkeit und Betriebssicherheit von mit erfindungsgemässen Presskolben abgedichteten Kartuschen gewährleistet bleibt.It is useful to have at least two, preferably four or six bevels arranged symmetrically to each other to provide. Such an embodiment of the inventive Press piston leads to optimal ventilation of the cartridge when the piston is pressed into the container part, and this with the same strength and sealing properties, so that shelf life and operational safety of sealed with press pistons according to the invention Cartridges remains guaranteed.

Die erfindungsgemässen Anschrägungen umfassen nicht den gesamten Umfang des zylindrischen Mantels und sind - wie aus der nachfolgend noch erläuterten Zeichnung ersichtlich ist - im wesentlichen dellenartige Einbuchtungen des zylindrischen Mantel. The bevels according to the invention do not include the entire circumference of the cylindrical shell and are - like from can be seen from the drawing explained below - essentially dent-like indentations of the cylindrical Coat.

Nachfolgend wird anhand der beiliegenden Zeichnung ein Ausführungsbeispiel der Erfindung beschrieben. In der Zeichnung zeigt

  • die Figur 1 eine Kartusche zur Aufnahme eines hoch- oder niederviskosen Materials und einen in die Kartusche einzuführen bestimmten Presskolben,
  • die Figur 2 eine Draufsicht auf die Stirnseite des in vergrössertem Massstab gezeichneten erfindungsgemässen Presskolbens, und
  • die Figur 3 einen Schnitt entlang der Linie III der Figur 2.
    • An exemplary embodiment of the invention is described below with reference to the accompanying drawing. In the drawing shows
  • 1 shows a cartridge for receiving a high or low viscosity material and a press piston to be inserted into the cartridge,
  • 2 shows a plan view of the end face of the press piston according to the invention drawn on an enlarged scale, and
  • FIG. 3 shows a section along the line III in FIG. 2.

    • Die in der Figur 1 dargestellte Kartusche ist als ganzes mit 1 bezeichnet und weist einen zylindrischen Behälterteil 2 zur Aufnahme eines fliessfähigen Materials, wie zum Beispiel ein Polyurethan enthaltendes Dichtungsmittel, auf. Der Behälterteil 2 besitzt eine Stirnseite 3 mit einem Auslass-Stutzen 4. Letzterer weist vorzugsweise ein Aussengewinde 4a auf, auf welches zum Gebrauch der Kartusche 1 eine nicht gezeichnete Ausslass-Spitze aufgeschraubt wird.The cartridge shown in Figure 1 is a whole designated 1 and has a cylindrical container part 2 to hold a flowable material, such as a sealant containing polyurethane. The container part 2 has an end face 3 with an outlet nozzle 4. The latter preferably has an external thread 4a which for use of the cartridge 1 is not shown Outlet tip is screwed on.

    Das der Stirnseite 3 gegenüberliegende Ende 5 des Behälterteils 2 ist offen und wird nach dem Abfüllen der Kartusche 1 mit dem erfindungsgemässen Presskolben 6 fluid- und gasdicht verschlossen.The end 5 of the container part opposite the end face 3 2 is open and comes after filling the cartridge 1 with the press piston 6 according to the invention in a fluid and gas tight manner locked.

    Der in den Figuren 2 und 3 in vergrössertem Massstab gezeichnete Presskolben 6 besteht vorzugsweise aus Aluminium und besitzt eine dem Auslass 4 der Kartusche 1 zuzuwenden bestimmte Stirnwand 7 und einen im wesentlichen zylindrischen Mantel 8 mit der Länge l1. Letzterer ist in einen der Stirnwand 7 abgewandten ersten und einen der Stirnwand 7 zugewandten zweiten Zylinderabschnitt 9 bzw. 10 aufgeteilt.The plunger 6 drawn on an enlarged scale in FIGS. 2 and 3 is preferably made of aluminum and has an end wall 7 which is intended to face the outlet 4 of the cartridge 1 and an essentially cylindrical jacket 8 with the length l 1 . The latter is divided into a first cylinder section 9 and 10 facing away from the end wall 7 and a second cylinder section facing the end wall 7.

    Die Wandstärke des Presskolbens 6 beträgt 0,2 mm - 1 mm, vorzugsweise aber 0,4 mm. Damit zur fluid- und gasdichten Verschliessung des Kartuschen-Innenraumes keine nachträgliche Spreizung des Kolbens 6 nötig ist, besitzt dieser einen äusseren Durchmesser, der mindestens gleich gross ist, wie der Innendurchmesser des zylindrischen Behälterteils 2, höchstens aber etwa 2%, beispielsweise 1%, grösser ist als dieser.The wall thickness of the plunger 6 is 0.2 mm - 1 mm, but preferably 0.4 mm. So that fluid and gas-tight Closure of the cartridge interior is not a retrofit Spreading of the piston 6 is necessary, it has one outer diameter, which is at least as large as the inside diameter of the cylindrical container part 2, but at most about 2%, for example 1%, is greater than this.

    Wie man insbesondere aus der Figur 3 klar ersehen kann, ist der zweite Zylinderabschnitt 10 mit sechs symmetrisch um den Umfang des Zylinderabschnittes 10 herum angeordneten Anschrägungen 11 versehen, die sich ausgehend von der Stirnkante 7a über die ganze Länge des Zylinderabschnittes 10 erstrecken und mit zunehmendem Abstand von der abgerundeten Stirnkante 7a schmäler werden.As can be seen particularly clearly from FIG. 3, is the second cylinder section 10 with six symmetrical around bevels arranged around the circumference of the cylinder section 10 11 provided, starting from the front edge 7a extend over the entire length of the cylinder section 10 and with increasing distance from the rounded Front edge 7a become narrower.

    Die Länge L2 des zweiten Zylinderabschnittes 10 ist vorzugsweise so gewählt, dass die Beziehung 1/4·L1 ≤ L2 ≤ 2/3·L1 erfüllt ist. Es ist also die Länge 12 des Zylinderabschnittes 10 in jedem Fall mindestens 1/4 und höchstens 2/3 der Gesamtlänge l1.The length L 2 of the second cylinder section 10 is preferably chosen so that the relationship 1/4 L 1 ≤ L 2 ≤ 2/3 L 1 is satisfied. It is the length 1 2 of the cylinder section 10 in any case at least 1/4 and at most 2/3 of the total length l 1 .

    Der Zylinderabschnitt 9 dient im wesentlichen der Abdichtung des Kartuschen-Innenraumes. Er muss daher eine Mantelfläche aufweisen, die so gross ist, dass der Kartuschen-Innenraum auch beim Verschieben des Kolbens 6 optimal abgedichtet ist. Es ist daher der Zylinderabschnitt 9 vorzugsweise mindestens gleich gross wie der Zylinderabschnitt 10. The cylinder section 9 essentially serves as a seal of the cartridge interior. It must therefore have an outer surface which is so large that the cartridge interior also optimally sealed when moving the piston 6 is. The cylinder section 9 is therefore preferred at least the same size as the cylinder section 10.

    Der Mantel 8 als ganzes muss darüber hinaus so lang sein, dass der Kolben 6 beim Herauspressen des Materials aus der Kartusche 1 seine axiale Orientierung beibehält und sich nicht schräg stellt.The jacket 8 as a whole must also be so long that the piston 6 when pressing the material out of the Cartridge 1 maintains its axial orientation and itself not at an angle.

    Aus der Zeichnung ist noch ersichtlich, dass der Presskolben 6 an seiner Stirnfläche 7 eine zentrale, kreisförmige Ausbuchtung 12 sowie sechs radial angeordnete und sich von der Ausbuchtung 12 nach aussen erstreckende Kerben 13 besitzt, die ihrerseits so symmetrisch ausgerichtet sind, dass ihre axialen Verlängerungen jeweils zwischen zwei benachbarte Anschrägungen 11 zu liegen kommen. Sowohl die Ausbuchtung 12 als auch die Kerben 13 dienen im wesentlichen dazu, eine formfeste und stabile Stirnwand 7 zu bilden, die dem Pressdruck der zur Aufnahme der Kartusche dienenden Spritzpistole Stand hält.From the drawing it can still be seen that the plunger 6 on its end face 7 a central, circular Bulge 12 and six radially arranged and from the bulge 12 has outwardly extending notches 13, which in turn are so symmetrically aligned that their axial extensions between two neighboring ones Bevels 11 come to rest. Both the bulge 12 and the notches 13 serve essentially to a form-stable and stable end wall 7 to form the pressure the spray gun used to hold the cartridge Holds up.

    Im folgenden wird nun die Verwendung des erfindungsgemässen Presskolbens kurz beschrieben.The use of the method according to the invention is now described below Briefly described plunger.

    In einem ersten Schritt wird der im hinteren Endabschnitt 5 noch zusätzlich eine Wachsschicht aufweisende Behälterteil 2 mit fliessfähigem Material gefüllt.In a first step, the in the rear end section 5 additionally has a wax layer container part 2 filled with flowable material.

    Anschliessend wird der Behälterteil 2 einer der Abfüll- oder Verschliess-Strasse zugeordneten Presse zugeführt, mit welcher ein Kolben 6 in den offenen Endabschnitt 5 des Behälterteils 2 gepresst wird. Das Material von Behälterteil 2 und Kolben 6 ist ferner so aufeinander abgestimmt, dass falls der Aussendurchmesser des Kolbens 6 ein klein wenig grösser ist als der Innendurchmesser des Behälterteils sich die zylindrische Wand des Behälterteils beim Einpressen des Kolbens 6 etwas verformt und ausdehnt. The container part 2 is then one of the filling or press assigned to the closing street, with which a piston 6 in the open end portion 5 of the container part 2 is pressed. The material of container part 2 and Piston 6 is also coordinated so that if the Outside diameter of the piston 6 is a little bit larger than the inside diameter of the container part is the cylindrical Wall of the container part when the piston 6 is pressed in somewhat deformed and expanding.

    Beim Einpressen des Kolbens 6 entweicht die im Kartuschen-Innenraum enthaltene und vom eindringenden Kolben 6 verdrängte Luft durch von den Anschrägungen 11 kurzzeitig gebildeten Durchgänge nach aussen, so dass sich im Innern der Kartusche kein Überdruck bildet und der Kolben 6 so im eingesetzten Zustand verbleibt.When the piston 6 is pressed in, it escapes in the interior of the cartridge contained and from the penetrating piston 6 displaced air by briefly formed by the bevels 11 Passages to the outside, so that inside the Cartridge does not form excess pressure and the piston 6 is thus inserted State remains.

    Sowohl die Wandstärken als auch die Abmessungen der Innen- bzw. Aussendurchmesser von Behälterteil 2 und Kolben 6 sind so aufeinander abgestimmt, dass ein fluid- und gasdichter Verschluss gewährleistet wird. Es sind daher die vorgenannten Wandstärken und Abmessungen des erfindungsgemässen Presskolbens Erfahrungswerte, die sich aus zahlreichen Testversuchen ergeben und bei unterschiedlicher Wahl von Material und Kartuschengrösse unterscheiden können. Es können daher erfindungsgemässe Kolben vom gezeichneten Ausführungsbeispiel abweichende Formen und Abmessungen haben.Both the wall thicknesses and the dimensions of the interior or outer diameter of container part 2 and piston 6 are coordinated so that they are fluid and gas tight Closure is guaranteed. It is therefore the aforementioned wall thicknesses and dimensions of the inventive Press piston experience based on numerous Test attempts result and with different choice of Can differentiate material and cartridge size. It can therefore pistons according to the invention from the illustrated embodiment have different shapes and dimensions.

    Claims (6)

    Kolben zum Einsetzen in den zylindrischen Behälterteil (2) einer zur Aufnahme eines fliessfähigen Materials dienenden Kartusche (1) mit einem zylindrischen Mantel (8) und einer Stirnwand (7), dadurch gekennzeichnet, dass der äussere Durchmesser des zylindrischen Mantels (8) des Kolbens (6) mindestens ebenso gross ist, wie der Innendurchmesser des zylindrischen Behälterteils (2) der Kartusche (1) und dass der zylindrische Mantel (8) so bemessen und mit mindestens einer von der Stirnwand (7) ausgehenden Anschrägung (11) versehen ist, dass er satt passend in den Behälterteil (2) eingepresst werden kann und dass beim Einpressen des Kolbens (6) die mindestens eine Anschrägung (11) zusammen mit der zylindrischen Wand des Behälterteils (2) kurzzeitig einen Durchgang bildet, durch den die vom Kolben (6) verdrängte Luft nach aussen entweichen kann.Piston for insertion in the cylindrical part of the container (2) one that holds a flowable material Cartridge (1) with a cylindrical jacket (8) and an end wall (7), characterized in that the outer Diameter of the cylindrical jacket (8) of the piston (6) is at least as large as the inside diameter of the cylindrical container part (2) of the cartridge (1) and that the cylindrical jacket (8) so dimensioned and with at least a bevel (11) extending from the end wall (7) is that it fits snugly into the container part (2) and that when the piston is pressed in (6) the at least one bevel (11) together with the cylindrical Wall of the container part (2) briefly a passage forms, through which the air displaced by the piston (6) can escape to the outside. Kolben nach Anspruch 1, dadurch gekennzeichnet, dass mindestens zwei, vorzugsweise vier oder sechs, symmetrisch um den Umfang des zylindrischen Mantels (8) verteilte Anschrägungen (11) vorhanden sind.Piston according to claim 1, characterized in that at least two, preferably four or six, symmetrically around bevels distributed around the circumference of the cylindrical shell (8) (11) are present. Kolben nach Anspruch 1 oder 2, gekennzeichnet durch einen die mindestens eine Anschrägung (11) aufweisenden Zylinderabschnitt (10), dessen Länge mindestens 1/4 und höchstens 2/3 der Gesamtlänge des zylindrischen Mantels (8) ist.Piston according to claim 1 or 2, characterized by one which has at least one bevel (11) Cylinder section (10), the length of which is at least 1/4 and at most 2/3 of the total length of the cylindrical jacket (8) is. Kolben nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Aussendurchmesser des zylindrischen Mantels (8) höchstens 2% grösser ist, als Innendurchmesser des zylindrischen Behälterteils (2) . Piston according to one of claims 1 to 3, characterized in that that the outside diameter of the cylindrical Jacket (8) is at most 2% larger than the inner diameter of the cylindrical container part (2). Kolben nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die mindestens eine Anschrägung (11) mit zunehmendem Abstand von der Stirnwand (7) schmäler wird.Piston according to one of claims 1 to 4, characterized in that that the at least one bevel (11) with increasing distance from the end wall (7) becomes narrower. Kolben nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass er aus Aluminium besteht.Piston according to one of claims 1 to 5, characterized in that that it is made of aluminum.
    EP00810833A 2000-01-11 2000-09-15 Piston for closing a cartridge Expired - Lifetime EP1116670B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    CH462000 2000-01-11
    CH462000 2000-01-11

    Publications (2)

    Publication Number Publication Date
    EP1116670A1 true EP1116670A1 (en) 2001-07-18
    EP1116670B1 EP1116670B1 (en) 2004-03-31

    Family

    ID=4279495

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00810833A Expired - Lifetime EP1116670B1 (en) 2000-01-11 2000-09-15 Piston for closing a cartridge

    Country Status (5)

    Country Link
    US (1) US6409053B2 (en)
    EP (1) EP1116670B1 (en)
    AT (1) ATE263092T1 (en)
    CA (1) CA2324763A1 (en)
    DE (1) DE50005891D1 (en)

    Families Citing this family (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US20090283550A1 (en) * 2008-05-16 2009-11-19 Kimball James F Extreme Barrier Metal Piston and Container Utilizing Same
    DE102010048062B4 (en) * 2010-06-22 2018-08-23 Fischbach Kg Kunststoff-Technik cartridge plunger
    JP6529948B2 (en) * 2016-11-16 2019-06-12 リューベ株式会社 Lubricant cartridge container and lubricant supply system provided with the same

    Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2071268A (en) * 1980-02-16 1981-09-16 Fischbach A Kunststoff Kg End closure/expulsion piston for container for plastic material
    DE19714331A1 (en) * 1996-11-12 1998-05-14 Ritter Frank Ejection ram for cartridges
    EP0900599A2 (en) * 1997-07-09 1999-03-10 Sonoco Products Company Self venting plunger

    Family Cites Families (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2197425B (en) * 1986-11-12 1990-02-28 Metal Box Plc Pistons for pressure-dispensing containers
    US5170913A (en) * 1991-04-22 1992-12-15 The Spatz Corporation Dispensers for fluent masses with enhanced sealing and latching
    US5127556A (en) * 1991-07-17 1992-07-07 United States Can Company Low mass piston system for necked-in aerosol cans

    Patent Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2071268A (en) * 1980-02-16 1981-09-16 Fischbach A Kunststoff Kg End closure/expulsion piston for container for plastic material
    DE19714331A1 (en) * 1996-11-12 1998-05-14 Ritter Frank Ejection ram for cartridges
    EP0900599A2 (en) * 1997-07-09 1999-03-10 Sonoco Products Company Self venting plunger

    Also Published As

    Publication number Publication date
    ATE263092T1 (en) 2004-04-15
    US6409053B2 (en) 2002-06-25
    EP1116670B1 (en) 2004-03-31
    US20010007328A1 (en) 2001-07-12
    DE50005891D1 (en) 2004-05-06
    CA2324763A1 (en) 2001-07-11

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