EP0688727A1 - Procédé d'assemblage d'une cartouche comprenant un piston - Google Patents

Procédé d'assemblage d'une cartouche comprenant un piston Download PDF

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Publication number
EP0688727A1
EP0688727A1 EP95810392A EP95810392A EP0688727A1 EP 0688727 A1 EP0688727 A1 EP 0688727A1 EP 95810392 A EP95810392 A EP 95810392A EP 95810392 A EP95810392 A EP 95810392A EP 0688727 A1 EP0688727 A1 EP 0688727A1
Authority
EP
European Patent Office
Prior art keywords
piston
cartridge
container
retaining means
retaining
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.)
Withdrawn
Application number
EP95810392A
Other languages
German (de)
English (en)
Inventor
Wilhelm A. Keller
Richard J. Wilson
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
Publication of EP0688727A1 publication Critical patent/EP0688727A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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

Definitions

  • Single and two-component cartridges are well known as a convenient method for the storage and the dispensing of sealants and adhesives.
  • Their design incorporates the principle of a piston, which both seals within a cylinder when the piston is stationary during storage as well as when the piston is moving during displacement of the cylinder content.
  • the rear of the piston is usually set close to the end of the cylinder. The distance between the two was hitherto used as a safety factor for any possible backward movement of the piston.
  • a cartridge may be exposed to considerable cycles of temperature changes during storage and transport which can affect both the cartridge materials of construction and the chemical within the cartridge, especially if the chemical is highly volatile or contains air. These cyclic changes can cause a pumping action whereby the piston fails to return to its own original position when the temperature falls.
  • any inner cartridge volume expansion and resultant pressure differential is capable of acting against the front of the piston and a typical piston lip seal is designed to become more effective in these circumstances.
  • air may be drawn in past the piston seal into the area in front of the piston since the lip seal faces the wrong way.
  • US-A-1,535,994 discloses a metal oil can with a washer having stops preventing the washer and parts associated therewith from being wholly drawn from the can. This patent is silent about the manufacture of the stops and there is no hint to produce these stops after having introduced the washer.
  • Fig. 1 shows a two-component cartridge system 1 comprising two cartridge cylinders 2 and 3 with one open end 4, 5 and combining together at the closed end into a twin outlet 6, the latter being completely sealed by a twin nose plug 7 secured by and tensioned by a retaining nut 8.
  • Two pistons 9 and 10 are positioned inside the cylinders, each shown with two piston lip seals 11 and 12.
  • Piston 10 is shown with an optional secondary "O" ring type seal 13.
  • a piston retaining means 14 is formed on the inner surface 15 of the cylinder wall 16 of the cartridge, in this example at two places, at 180° to each other immediately behind each piston.
  • the retaining means are formed after the piston is in position within the cylinder, for example by the use of a special tool.
  • the retaining means is a flap-like deformation with an open edge spaced from the wall.
  • the deformation and retaining edge thus formed may take several forms as shown but the underlying principle is that of the protrusion of a face at 90° to the wall of the cartridge of sufficient depth to retain and withstand the force of any possible backward movement of the piston rim.
  • the retaining edge is positioned between the rim of the cartridge cylinder and the rear surface of the piston when the piston is in the cartridge.
  • the retaining means is formed by pressing out of the cylinder wall, into the inside of the cylinder, a rectangular piece in a movement which is essentially parallel to the rear surface of the piston, corresponding to Fig. 8B, see also Fig. 3.
  • FIG. 4-6 A variant of the embodiment according to Figs. 1-3 is shown in the Figs. 4-6, with the same two-component cartridge system, and other retaining means 17.
  • a rectangular piece is pressed out of the cylinder wall, into the inside of the cylinder, in a movement which is essentially perpendicular to the rear surface of the piston, corresponding to Fig. 8A and B, see also Fig. 6.
  • Fig. 7 shows a third embodiment of the invention, incorporating a disc or ring 18 between the rear surface of the piston and the retaining edge of the retaining means in order to prevent concentration of any forces where a piston has a rounded edge, or/and is made of soft material and has a clearance between the piston and the cylinder.
  • Figs. 8 C-F show further variants of the shape of the retaining means, for illustrating that a multitude of different shapes are possible within the scope of this invention, for instance semi-circular (C), triangular (D) or trapezoidal (E, F).
  • the invention is not limited to the embodiments shown.
  • the invention also applies to one component cartridges as well as to multi-component cartridges, e.g. side by side, concentric or cylindrical cartridges having a dividing wall,and the cartridges need not necessarily have a cylindrical form.
  • the number of retaining means may vary from one to several, for example two, three or four.
  • the depth of the retaining means must be thus that it is effective for the permanent retention of the piston while allowing for both a filling nozzle to enter the container without any interference as well as the drive plunger of a dispensing gun. Also, such a retaining means is designed so as not to interfere with the external dimensions of a cartridge and thus, not disturb the cartridge outer dimensions and the fit within a dispenser frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
EP95810392A 1994-06-22 1995-06-13 Procédé d'assemblage d'une cartouche comprenant un piston Withdrawn EP0688727A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26413894A 1994-06-22 1994-06-22
US264138 1994-06-22

Publications (1)

Publication Number Publication Date
EP0688727A1 true EP0688727A1 (fr) 1995-12-27

Family

ID=23004758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95810392A Withdrawn EP0688727A1 (fr) 1994-06-22 1995-06-13 Procédé d'assemblage d'une cartouche comprenant un piston

Country Status (2)

Country Link
EP (1) EP0688727A1 (fr)
JP (1) JPH08164984A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1657183A2 (fr) * 2004-11-12 2006-05-17 Artex-Rawlplug Limited Moyen de rétention pour pistons
DE102011000487A1 (de) * 2011-02-03 2012-08-09 CAS Chemotechnische Abpack-Service GmbH Behälter, insbesondere Spritzkartusche, der eine Baumontagekleber- und/oder Baumontagedichtmasse beeinhaltet und Vorrichtung zur Herstellung des Behälters
EP2546166A1 (fr) 2011-07-15 2013-01-16 Sulzer Mixpac AG Sécurisation de piston
US20130105515A1 (en) * 2011-11-02 2013-05-02 Plas-Pak Industries, Inc. Dispenser system
US20140124508A1 (en) * 2012-11-08 2014-05-08 Sulzer Mixpac Ag Cartridge for at least two flowable components

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1535994A (en) 1923-08-06 1925-04-28 Miles S Gates Oil can
DE2217071A1 (de) * 1972-04-08 1974-01-24 Hagen Perennatorwerk Vorrichtung zum auspressen von viskosen massen, insbesondere pasten, wie klebstoff, dichtstoff u.dgl. aus verpackungsbehaeltern
FR2350278A1 (fr) * 1976-05-03 1977-12-02 Wischerath Kg Josef Tube a coulisse pour produit en baton
FR2355727A1 (fr) * 1976-06-21 1978-01-20 Voplex Corp Dispositif de verrouillage d'un element d'obturation dans une extremite d'un cylindre a paroi elastiquement deformable
EP0351441A1 (fr) * 1988-07-21 1990-01-24 Alfred Fischbach Kunststoffspritzgusswerk Cartouche pour masses plastiques
DE9006122U1 (de) * 1990-05-30 1990-08-02 Günzel, Ernst, 8037 Olching Mischkartusche für flüssige Stoffe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1535994A (en) 1923-08-06 1925-04-28 Miles S Gates Oil can
DE2217071A1 (de) * 1972-04-08 1974-01-24 Hagen Perennatorwerk Vorrichtung zum auspressen von viskosen massen, insbesondere pasten, wie klebstoff, dichtstoff u.dgl. aus verpackungsbehaeltern
FR2350278A1 (fr) * 1976-05-03 1977-12-02 Wischerath Kg Josef Tube a coulisse pour produit en baton
FR2355727A1 (fr) * 1976-06-21 1978-01-20 Voplex Corp Dispositif de verrouillage d'un element d'obturation dans une extremite d'un cylindre a paroi elastiquement deformable
EP0351441A1 (fr) * 1988-07-21 1990-01-24 Alfred Fischbach Kunststoffspritzgusswerk Cartouche pour masses plastiques
DE9006122U1 (de) * 1990-05-30 1990-08-02 Günzel, Ernst, 8037 Olching Mischkartusche für flüssige Stoffe

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1657183A3 (fr) * 2004-11-12 2006-05-31 Artex-Rawlplug Limited Moyen de rétention pour pistons
EP1657183A2 (fr) * 2004-11-12 2006-05-17 Artex-Rawlplug Limited Moyen de rétention pour pistons
DE102011000487B4 (de) * 2011-02-03 2015-02-05 CAS Chemotechnische Abpack-Service GmbH Vorrichtung und Verfahren zum Einbringen einer Baumontageklebe- und/oder Baumontagedichtmasse in einen Behälter
DE102011000487A1 (de) * 2011-02-03 2012-08-09 CAS Chemotechnische Abpack-Service GmbH Behälter, insbesondere Spritzkartusche, der eine Baumontagekleber- und/oder Baumontagedichtmasse beeinhaltet und Vorrichtung zur Herstellung des Behälters
EP2546166A1 (fr) 2011-07-15 2013-01-16 Sulzer Mixpac AG Sécurisation de piston
CN102874485A (zh) * 2011-07-15 2013-01-16 苏舍米克斯帕克有限公司 活塞固定装置
US20130015205A1 (en) * 2011-07-15 2013-01-17 Sulzer Mixpac Ag Piston securing device
CN102874485B (zh) * 2011-07-15 2016-12-21 苏舍米克斯帕克有限公司 料筒及其制造方法
US8925764B2 (en) 2011-07-15 2015-01-06 Sulzer Mixpac Ag Piston securing device
US20130105515A1 (en) * 2011-11-02 2013-05-02 Plas-Pak Industries, Inc. Dispenser system
CN103803179A (zh) * 2012-11-08 2014-05-21 苏舍米克斯帕克有限公司 用于至少两种可流动成分的料筒
US20140124508A1 (en) * 2012-11-08 2014-05-08 Sulzer Mixpac Ag Cartridge for at least two flowable components
US9611074B2 (en) * 2012-11-08 2017-04-04 Sulzer Mixpac Ag Cartridge for at least two flowable components
US20170158413A1 (en) * 2012-11-08 2017-06-08 Sulzer Mixpac Ag Cartridge for at least two flowable components
CN103803179B (zh) * 2012-11-08 2017-10-13 苏舍米克斯帕克有限公司 用于至少两种可流动成分的料筒
EP2730341B1 (fr) * 2012-11-08 2018-07-11 Sulzer Mixpac AG Cartouche pour au moins deux composants pouvant s'écouler

Also Published As

Publication number Publication date
JPH08164984A (ja) 1996-06-25

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