US20050155269A1 - Multi-component cartridge and its application - Google Patents

Multi-component cartridge and its application Download PDF

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Publication number
US20050155269A1
US20050155269A1 US11/013,988 US1398804A US2005155269A1 US 20050155269 A1 US20050155269 A1 US 20050155269A1 US 1398804 A US1398804 A US 1398804A US 2005155269 A1 US2005155269 A1 US 2005155269A1
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US
United States
Prior art keywords
chambers
cartridge according
chamber
chamber cartridge
partition wall
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.)
Abandoned
Application number
US11/013,988
Inventor
Klaus-Dieter Nehren
Matthias Schaub
Christian Bressler
Benedikt Pollock
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.)
Kulzer GmbH
Original Assignee
Heraeus Kulzer GmbH
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 Heraeus Kulzer GmbH filed Critical Heraeus Kulzer GmbH
Assigned to HERAEUS KULZER GMBH reassignment HERAEUS KULZER GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRESSLER, CHRISTIAN, POLLOCK, BENEDIKT, NEHREN, KLAUS-DIETER, SCHAUB, MATTHIAS
Publication of US20050155269A1 publication Critical patent/US20050155269A1/en
Abandoned 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
    • 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
    • B65D81/3283—Cylindrical or polygonal containers, e.g. bottles, with two or more substantially axially offset, side-by-side compartments for simultaneous dispensing
    • B65D81/3288—Cylindrical or polygonal containers, e.g. bottles, with two or more substantially axially offset, side-by-side compartments for simultaneous dispensing composed of two or more separate containers joined to each other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/60—Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses
    • A61C5/62—Applicators, e.g. syringes or guns
    • A61C5/64—Applicators, e.g. syringes or guns for multi-component compositions
    • 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
    • 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

Definitions

  • the invention has to do with multi-component cartridges, in particular two-chambered cartridges for dispensing viscous pastes.
  • the invention thus has to do with two-chambered cartridges for dispensing viscous pastes, in which at least one of the chambers has a target break point that does not lie on a surface, as the case may be, in common with the chambers.
  • the target break point(s) open(s) necessarily into a hollow space outside of the chambers.
  • Preferred are cartridges without a common separation wall between the chambers.
  • a spray guard in the sense of the invention at hand prevents spraying, i.e., that upon bursting of a multi-component cartridge an uncontrolled spaying out is avoided.
  • FIG. 1 shows a cross section traversing a two-chambered cartridge system of the state of the art technology with a common separation wall.
  • FIG. 2 shows a cross section traversing a two-chambered cartridge system, in which a partition wall links the cartridges and the target break point 12 is designed as a taper of the wall.
  • FIG. 3 shows a cross section traversing a two-chambered cartridge system, in which a partition wall links the cartridges and the target break point 13 is designed as a notch.
  • the target break point can be shaped in such a way that a unilateral excess pressure, e.g., in the chamber 3 by ripping of the separation wall 2 can release tension into the other chamber 4 ( FIG. 1 ). That is not foreseen with the invention at hand.
  • the target break point does not lie on a surface in common with the chambers.
  • the mixing wave 5 for driving the dynamic mixer runs between both the cartridge chambers 6 , 7 .
  • a target break point can be planned, e.g., at the point 12 .
  • Material can escape into a hollow space formed in any way (space 9 ) that is closed in FIG. 2 by the space 14 .
  • This hollow space 9 is created in the design form depicted in the FIGS. 2 and 3 by introducing a partition wall 10 (preferably out of plastic) above the mixing wave running between the chambers 6 , 7 .
  • a partition wall 10 preferably out of plastic
  • both of the cartridge chambers 6 , 7 tangentially 14 are linked by means of a surface (e.g., a label, a sheet or another wall), a hollow space 9 arises above the target break point 12 , 13 .
  • the partition wall 10 running between the chambers 6 , 7 can:
  • the cartridge is designed in an additional preferred design form for a mixing ratio of 5:1, the pressure in the individual chambers with equal force on the pistons is variably great.

Abstract

Two-chamber cartridges for dispensing viscous pastes in which at least one of the chambers has a target break point that does not lie on the surface, of a common wall between the chambers.

Description

  • The invention has to do with multi-component cartridges, in particular two-chambered cartridges for dispensing viscous pastes.
  • In the dental market motor-driven appliances for discharging and mixing two-component pastes are widespread. In them either double cartridges or tubular bags with backup cartridges are utilized. The products that are discharged from these cartridges as a rule are highly viscous pastes. For that reason they require high pressure in order to be able to flow through the mixer upstream. Accordingly the devices generate high power.
  • Since these cartridges/tubular bags are handling chemically curing substances, there is the possibility that the outlet channels close due to clogging formation. Should that occur only with one of the two components, then all the delivery pressure develops exclusively in this clogged chamber.
  • With the common devices here about 90 bars of pressure and more can build up.
  • Due to the geometric structural conditions of the devices the maximum wall strengths of the cartridge chambers are limited. The use of a cartridge that can withstand over 90 bars of pressure, however, does not constitute any guaranteed reliability, because most of the devices do not have a force limiter.
  • It is difficult to find a plastic material that is compatible with the content products and at the same time bears up against these great mechanical demands. Tested plastics that are compatible with the given pastes withstand about 60 bars of pressure at the most. Whenever the cartridges burst the contents in certain circumstances spray off several meters.
  • Since at present it does not seem possible to avoid bursting in every case and the devices are widespread, it is desirable to avoid the spraying off and to indicate to the users that the conveying process does not occur properly.
  • For that reason the problem arises of avoiding the effects connected with the bursting of multi-component cartridges (uncontrollable spraying off of the cartridge contents).
  • The problem is resolved in accordance with claim 1. Other advantageous details are described in the following claims.
  • There are cartridges on the market that for other construction reasons have wall reinforcement tapers and preferentially burst at these places.
  • But these tapers are at those places that give the user no security. They have no separate hollow spaces or partition walls.
  • The invention thus has to do with two-chambered cartridges for dispensing viscous pastes, in which at least one of the chambers has a target break point that does not lie on a surface, as the case may be, in common with the chambers. The target break point(s) open(s) necessarily into a hollow space outside of the chambers. Preferred are cartridges without a common separation wall between the chambers.
  • In case of bursting a spray guard in the sense of the invention at hand prevents spraying, i.e., that upon bursting of a multi-component cartridge an uncontrolled spaying out is avoided.
  • Such cartridges, e.g., are described and depicted in DE 100 22 160 A1.
  • By means of the drawing the invention is elucidated in more depth:
  • FIG. 1 shows a cross section traversing a two-chambered cartridge system of the state of the art technology with a common separation wall.
  • FIG. 2 shows a cross section traversing a two-chambered cartridge system, in which a partition wall links the cartridges and the target break point 12 is designed as a taper of the wall.
  • FIG. 3 shows a cross section traversing a two-chambered cartridge system, in which a partition wall links the cartridges and the target break point 13 is designed as a notch.
  • With double cartridges 1 having a common separation wall 2 the target break point can be shaped in such a way that a unilateral excess pressure, e.g., in the chamber 3 by ripping of the separation wall 2 can release tension into the other chamber 4 (FIG. 1). That is not foreseen with the invention at hand. The target break point does not lie on a surface in common with the chambers.
  • In a special design form (FIG. 2) the mixing wave 5 for driving the dynamic mixer runs between both the cartridge chambers 6, 7. A target break point can be planned, e.g., at the point 12. Material can escape into a hollow space formed in any way (space 9) that is closed in FIG. 2 by the space 14.
  • With many press-out devices the cartridge is free on all sides when in use. For this reason the “excess pressure” valve described above is shaped in such a way that material being sprayed out is collected in the hollow space 9.
  • This hollow space 9 is created in the design form depicted in the FIGS. 2 and 3 by introducing a partition wall 10 (preferably out of plastic) above the mixing wave running between the chambers 6, 7. Above that outside on the chamber wall 11 a taper 12, 13 running along the chamber wall 11 is introduced as a target break point. This can, e.g., be shaped as a radius flat portion 12 or as a notch 13.
  • While the outer diameters of both of the cartridge chambers 6, 7 tangentially 14 are linked by means of a surface (e.g., a label, a sheet or another wall), a hollow space 9 arises above the target break point 12, 13.
  • The partition wall 10 running between the chambers 6, 7 can:
      • be linked with both walls 11, 15 of chambers 6,7,
      • be linked only with one of both the walls 11, 15 of the chambers 6, 7,
      • be linked only with the wall 15 of the larger chamber 7 or be
      • a separate spare part that has no fixed link to the walls 11, 15 of the chambers.
  • Since the cartridge is designed in an additional preferred design form for a mixing ratio of 5:1, the pressure in the individual chambers with equal force on the pistons is variably great.
  • Therefore it suffices only to plan the target break point in this ratio for the smaller chamber. But even in such a case it can be advantageous to plan a target break point on each of the chambers in order to protect both the chambers.
  • Since in the present case double cartridges are being dealt with, in which both of the chambers are arranged pipe-shaped with a small spacing between each other, a hollow space can be created with this invention that captures the material spraying out when bursting. This principle can be applied to the double cartridges that are emptied manually, by air pressure or by motor.

Claims (13)

1. Two-chamber cartridge for dispensing viscous pastes, comprising a spray guard, and a target break point on at least one of said chambers.
2. Two-chamber cartridge according to claim 1, wherein the target break point does not lie on a surface common to the two chambers.
3. Two-chamber cartridge according to claim 1 or 2, wherein the target break point(s) open(s) into a hollow space (9) outside the chambers.
4. Two-chamber cartridge according to claim 1 or 2 having no common separation wall between the chambers.
5. Two-chamber cartridge according to claim 3, wherein the hollow space (9) is formed by
A) a partition wall running between the chambers,
B) the chamber walls and
C) a further partition wall.
6. Two-chamber cartridge according to claim 5 or 13, wherein said further partition wall is formed of a plastic wall, a sheet or a label.
7. Two-chamber cartridge according to claim 1, wherein the target break point(s) is (are) designed as a notch or wall taper.
8. Two-chamber cartridge according to claim 1, wherein each of said two chambers has a target break point.
9. Two-chamber cartridge according to claim 5 or 13, wherein the partition wall running between the chambers is linked with the walls of both of the chambers.
10. Two-chamber cartridge according to claim 5 or 13, wherein the partition wall running between the chambers is linked with the wall of one of the chambers.
11. Two-chamber cartridge according to claim 10, wherein one chamber is larger than the other and the partition wall running between the chambers is linked only with the wall of the larger chamber.
12. Two-chamber cartridge according to claim 5 or 13, wherein the partition wall running between the chambers is a spare part that has no fixed link to the wall of either of the chambers
13. Two-chamber cartridge according to claim 4, wherein the hollow space (9) is formed by
A) a partition wall running between the chambers,
B) the chamber walls and
C) a further partition wall.
US11/013,988 2003-12-19 2004-12-16 Multi-component cartridge and its application Abandoned US20050155269A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10360627A DE10360627B4 (en) 2003-12-19 2003-12-19 Multi-component cartridge and its application
DE10360627.0 2003-12-19

Publications (1)

Publication Number Publication Date
US20050155269A1 true US20050155269A1 (en) 2005-07-21

Family

ID=34485581

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/013,988 Abandoned US20050155269A1 (en) 2003-12-19 2004-12-16 Multi-component cartridge and its application

Country Status (5)

Country Link
US (1) US20050155269A1 (en)
EP (1) EP1543887B1 (en)
JP (1) JP2005178908A (en)
AT (1) ATE328671T1 (en)
DE (2) DE10360627B4 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764796A (en) * 1972-10-05 1973-10-09 Us Navy Chemical lighting device
US4386717A (en) * 1979-12-07 1983-06-07 Hilti Aktiengesellschaft Dispenser having hose-like expandable member
US5184757A (en) * 1991-03-25 1993-02-09 Giannuzzi Anthony C Double-barreled epoxy injection gun
US5526957A (en) * 1994-06-23 1996-06-18 Insta-Foam Products, Inc. Multi-component dispenser with self-pressurization system
US5697524A (en) * 1995-01-27 1997-12-16 Hilti Aktiengesellschaft Foil bag package including a foil bag and base part
US5782384A (en) * 1996-11-05 1998-07-21 Colgate-Palmolive Aligned web in a container
US6129244A (en) * 1997-04-08 2000-10-10 Ernst Muhlbauer Kg Device for dispensing a mixed dental multiconstituent mass
US20010013523A1 (en) * 2000-02-11 2001-08-16 Gross Richard A. Multiple dispensing valve closure with threaded attachment to a container and with a twist-open spout
US7097075B2 (en) * 2000-11-13 2006-08-29 3M Espe Ag Device for storing and dispensing flowable compositions

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0232733B1 (en) * 1986-02-10 1989-10-11 Wilhelm A. Keller Two-component application device
CH674828A5 (en) * 1987-10-23 1990-07-31 Gurit Essex Ag
DE9209105U1 (en) * 1992-07-07 1993-11-04 Ihde Stefan Prof Dr Mixing capsule for two-component materials with spray nozzle for the mixed mass, with manually activated piston
JPH09255050A (en) * 1996-03-19 1997-09-30 Keihan Serofuan Kk Package for food for cooking in microwave oven
DE19706932A1 (en) * 1997-02-20 1998-08-27 Dentaco Gmbh Multi-chamber ampoule for portioned liquids
JPH11310278A (en) * 1998-04-30 1999-11-09 Meiwa Packs:Kk Packaging body having perfect sealing property and automatic pressure control function
DE10022160B4 (en) * 2000-05-09 2006-01-19 Karlheinz Reiber applicator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764796A (en) * 1972-10-05 1973-10-09 Us Navy Chemical lighting device
US4386717A (en) * 1979-12-07 1983-06-07 Hilti Aktiengesellschaft Dispenser having hose-like expandable member
US5184757A (en) * 1991-03-25 1993-02-09 Giannuzzi Anthony C Double-barreled epoxy injection gun
US5526957A (en) * 1994-06-23 1996-06-18 Insta-Foam Products, Inc. Multi-component dispenser with self-pressurization system
US5697524A (en) * 1995-01-27 1997-12-16 Hilti Aktiengesellschaft Foil bag package including a foil bag and base part
US5782384A (en) * 1996-11-05 1998-07-21 Colgate-Palmolive Aligned web in a container
US6129244A (en) * 1997-04-08 2000-10-10 Ernst Muhlbauer Kg Device for dispensing a mixed dental multiconstituent mass
US20010013523A1 (en) * 2000-02-11 2001-08-16 Gross Richard A. Multiple dispensing valve closure with threaded attachment to a container and with a twist-open spout
US7097075B2 (en) * 2000-11-13 2006-08-29 3M Espe Ag Device for storing and dispensing flowable compositions

Also Published As

Publication number Publication date
DE502004000703D1 (en) 2006-07-20
JP2005178908A (en) 2005-07-07
DE10360627B4 (en) 2006-02-23
ATE328671T1 (en) 2006-06-15
EP1543887A1 (en) 2005-06-22
EP1543887B1 (en) 2006-06-07
DE10360627A1 (en) 2005-07-21

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HERAEUS KULZER GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NEHREN, KLAUS-DIETER;SCHAUB, MATTHIAS;BRESSLER, CHRISTIAN;AND OTHERS;REEL/FRAME:015924/0313;SIGNING DATES FROM 20050211 TO 20050307

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION