EP1165400A1 - Piston de cartouche - Google Patents

Piston de cartouche

Info

Publication number
EP1165400A1
EP1165400A1 EP01901199A EP01901199A EP1165400A1 EP 1165400 A1 EP1165400 A1 EP 1165400A1 EP 01901199 A EP01901199 A EP 01901199A EP 01901199 A EP01901199 A EP 01901199A EP 1165400 A1 EP1165400 A1 EP 1165400A1
Authority
EP
European Patent Office
Prior art keywords
cartridge
piston
sealing lip
piston according
cover
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.)
Granted
Application number
EP01901199A
Other languages
German (de)
English (en)
Other versions
EP1165400B1 (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.)
Sulzer Chemtech AG
Original Assignee
Sulzer Chemtech AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7936477&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1165400(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sulzer Chemtech AG filed Critical Sulzer Chemtech AG
Publication of EP1165400A1 publication Critical patent/EP1165400A1/fr
Application granted granted Critical
Publication of EP1165400B1 publication Critical patent/EP1165400B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B05C17/00559—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 the different components being stored in coaxial chambers
    • 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
    • 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

  • the invention relates to a cartridge piston according to the preamble of claim 1.
  • Cartridge pistons are usually made of a soft plastic, for example LDPE, in order to achieve the required sealing effect towards the cartridge wall.
  • LDPE low density polyethylene
  • Cartridge pistons are only partially resistant to certain materials forming the contents of the cartridge and, moreover, are not sufficiently diffusion-tight.
  • the plastic LDPE is attacked by polyester resins and swells.
  • cover disc made of polyamide for example, is arranged on the top of the piston, since polyamide is resistant to the pre-naive materials and also diffusion-tight.
  • cover plates can be flat or profiled according to the cross-sectional shape of the piston surface. In both cases, such cover disks are sealing against the cartridge wall.
  • the known pistons have on their area facing the cartridge wall a cross-sectionally V-shaped annular groove, the outer edge of which is designed as a sealing lip. If the contents of the cartridge are pressed out of the cartridge by pressing the piston, the cartridge bulges. At the same time, however, the pressure acting on the contents of the cartridge causes the outer leg of the V-shaped groove and thus the sealing lip to be pressed against the cartridge wall.
  • the object is to design the cartridge piston in such a way that, on the one hand, the piston is protected from the influence of the cartridge content and, on the other hand, the sealing function of the piston is ensured even when the cartridge bulges.
  • Figure 1 shows a section through a piston for an egg component cartridge
  • Figure 2 shows a section through an annular piston for a coaxial cartridge according to a first embodiment
  • Figure 3 shows an edge section through the piston and the cover plate
  • FIG. 4a shows a section through an annular piston according to a second embodiment when it is introduced into a coaxial cartridge with a central inner tube;
  • Figure 4b shows a section through the ring piston of Figure 4a when inserted into a cartridge with an eccentric inner tube
  • FIG. 5a shows a section through an annular piston according to a third embodiment when it is introduced into a coaxial cartridge with a central inner tube and
  • FIG. 5b shows a section through the annular piston of FIG. 5a when it is introduced into a coaxial cartridge with an eccentric inner tube.
  • the piston 1 according to FIG. 1 consists, for example, of polyethylene, preferably of LDPE. On its upper side, this piston 1 has an annular groove 2 which is V-shaped in cross section. At the end of the outer leg 13 of the groove 2, a flexible sealing lip 3 is provided. The piston has a locking bore 4 in the center. Spacer knobs 6 are formed on the piston surface 5. In the area of the groove base 7, a circumferential locking projection 8 is integrally formed on the inside of the leg 13 of the groove 2 facing outwards.
  • the cover disk 9 has a locking pin 10 in the center, which is locked with the locking bore 4. Due to the spacer knobs 6, the cover 9 runs in slight distance from the piston surface 5.
  • the outer edge of the cover plate 9 is angled in an L-shape towards the groove base 7, the bend 11 having a circumferential locking lug 12 at its lower end.
  • the locking lug 12 is locked with the locking projection 8 in a liquid-tight and gas-tight manner.
  • the outer leg 13 with the sealing lip 3 is probably exposed to the contents of the cartridge, but this is not harmful since, due to the material, only widening can take place here.
  • the remaining areas of the piston 1 are in any case protected from the contents of the cartridge. If the cartridge wall bulges as a result of the pressure acting on the cartridge content, then at the same time this leg swings outwards as a result of the pressure acting on the inside of the leg 13, so that the sealing lip 3 is pressed against the inside wall of the cartridge.
  • the cover plate 9 can be provided with a plurality of bores 14.
  • a ventilation channel can be provided between the locking pin 10 and the locking bore 4. This ventilation duct is obtained if, for example, the locking bore has a cross-section deviating from the circular shape.
  • the air in the cartridge can thus flow out through a pressure on the piston 1 via the bores 14, the gap between the cover plate 9 and the piston surface 5 via the aforementioned ventilation channel.
  • FIG. 2 shows an annular piston for a coaxial cartridge.
  • the outer peripheral region 15 of the piston 1A is of the same design as described with reference to FIG. 1.
  • a circumferential V-shaped groove 20 is also provided, the inner leg 23 of which has a sealing lip 21 at its end.
  • the cover disk 9A also has a circumferential V-shaped groove 24 on its inner circumference, which, however, is arranged in mirror image to the groove 20 of the piston 1A.
  • the inner elastic leg 25 of the groove 24 ends in a sealing lip 26, which comes into contact with the inner wall of the outer cartridge chamber 27.
  • the piston has a locking pin 29 on which the cover plate 22 is clipped.
  • the piston For venting, the piston has a pocket 30 which is open at the bottom via a bore 31. A porous filter 32 is inserted into this pocket. The cartridge can thus be vented through the bores 14, the gap between the piston surface 5 and the cover plate 9A via the filter 32 and the bore 31.
  • the inner elastic leg 25 facilitates the insertion of the piston 1 A into the annular chamber 27 due to its inclined position.
  • FIG. 3 Another venting option that replaces the bores 14 is shown in FIG. 3.
  • the cover plate 9 has, along the inside of the pivot 11, vertically extending ventilation channels 33 which extend over the lower edge of the bend and over the circumferential locking lug 12. In this case, the air escapes via the channels 33, the gap between the piston surface 5 and the cover plate 9 or 9A and the ventilation channel or the filter.
  • annular piston 1A for a coaxial cartridge with an outer tube 34 and an inner tube 35 shown in FIGS. 4a and 4b there is a V-shaped annular groove 2 and a radially outer flexible sealing lip 3 for contacting the inner wall 36 on the outer peripheral region of the piston 1A of the outer tube 34 is provided.
  • the L-shaped outer edge of a cover plate 9A which is angled downward, is arranged as in the embodiment of FIG. 2 and is held there by a corresponding latching connection.
  • a circumferential V-shaped groove 20 with a radially inner sealing lip 21 on an inner leg 23 is also provided on the inner peripheral region of the annular piston 1A.
  • the inner sealing lip 21 is set back in relation to the outer sealing lip 3 in the axial direction by a few millimeters such that when inserting the annular piston 1A into the cartridge, the outer sealing lip 3 first comes to rest on the inner wall 36 of the outer tube 35 and the inner sealing lip 21 only touches the inner tube 35 when the annular piston 1A is inserted a few millimeters into the cartridge.
  • the forces for inserting the annular piston 1 A into the cartridge are considerably reduced compared to those designs in which the piston contacts the outer tube and the inner tube of the cartridge at the same time.
  • the cover disk 9A has on its inner circumference a region 37 which runs obliquely inwards over the radial groove and lies on the inner leg 23 and which ends in a circumferential sealing lip 38 for contact with the inner tube 35.
  • an insertion bevel for the inner tube 35 is formed. This has the advantage that the irine tube 35 is easily inserted into the central bore 39 of the annular piston 1A even in the case of an inclined position shown in FIG. 4b. It is therefore possible to dispense with complex precentering mechanisms, which are otherwise often required in order to insert the piston undamaged into the cartridge.
  • the central bore 39 of the annular piston 1A has a larger inner diameter than the previous embodiment.
  • This ring piston 1A is intended for a coaxial cartridge with a mixing ratio of 1: 1, while the piston shown in FIGS. 4a and 4b is designed for a mixing ratio of 10: 1.
  • the inner region 37 of the cover disk 9A also runs obliquely inwards and serves as an insertion slope for the inner tube 35 further support of the cover plate 9A protrudes into the radially inner groove 20 of the piston.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

Piston (1, 1A) de cartouche constitué d'une matière sensible au contenu de la cartouche, qui comporte un disque de couverture (9, 9A) constitué d'une matière non sensible au contenu de la cartouche. Ce disque est placé sur la surface supérieure (5) du piston et possède une structure adaptée aux formes transversales de la surface supérieure (5) du piston. La zone du piston (1, 1A) orientée vers la paroi de la cartouche est constituée d'une rainure annulaire (2) en V qui forme sur son bord une lèvre d'étanchéité (3). Selon la présente invention, le diamètre externe du disque de couverture (9, 9A) est inférieur à celui du bord du piston (1, 1A) formant la lèvre d'étanchéité (3) et le bord du disque de couverture (9, 9A) est relié de manière étanche à la surface supérieure (5) du piston. Cette configuration permet d'une part de protéger le piston contre l'influence du contenu de la cartouche et d'autre part de garantir la fonction d'étanchéité du piston, même en cas de bombement de la cartouche.
EP01901199A 2000-01-28 2001-01-24 Piston de cartouche Expired - Lifetime EP1165400B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20001438U 2000-01-28
DE20001438U DE20001438U1 (de) 2000-01-28 2000-01-28 Kartuschenkolben
PCT/EP2001/000751 WO2001055006A1 (fr) 2000-01-28 2001-01-24 Piston de cartouche

Publications (2)

Publication Number Publication Date
EP1165400A1 true EP1165400A1 (fr) 2002-01-02
EP1165400B1 EP1165400B1 (fr) 2003-01-02

Family

ID=7936477

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01901199A Expired - Lifetime EP1165400B1 (fr) 2000-01-28 2001-01-24 Piston de cartouche

Country Status (4)

Country Link
US (1) US6494348B2 (fr)
EP (1) EP1165400B1 (fr)
DE (2) DE20001438U1 (fr)
WO (1) WO2001055006A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010164196A (ja) * 2008-12-12 2010-07-29 Sulzer Mixpac Ag カートリッジピストン
AU2010329898B2 (en) * 2009-12-11 2014-12-04 Sulzer Mixpac Ag Cartridge piston
CN111542399A (zh) * 2017-12-20 2020-08-14 苏尔寿混合技术有限公司 活塞、料筒以及使料筒排气的方法

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20010417U1 (de) * 2000-06-09 2001-10-11 Sulzer Chemtech Ag, Winterthur Entlüftungsvorrichtung bei einem Kolben für eine Kartusche
WO2002084456A2 (fr) * 2001-04-12 2002-10-24 Netdesigns Limited Systeme de verification de l'identite d'un utilisateur
DE20202620U1 (de) * 2002-02-20 2003-04-30 Sulzer Chemtech Ag, Winterthur Ausdrückvorrichtung für eine Coaxialkartusche
DE10342091A1 (de) * 2003-09-10 2005-04-28 Heraeus Kulzer Gmbh Kartusche mit entlüftbarem Kolben
US7584872B2 (en) * 2004-11-10 2009-09-08 Samw Hong Jen Wang Fluid dispensing or feeding device
US7621428B2 (en) * 2005-07-01 2009-11-24 Nordson Corporation Dispensing cartridge with vented piston
DE102006047289B4 (de) * 2006-10-06 2008-09-04 Sulzer Chemtech Ag Kartuschenkolben
DE102008000841B8 (de) * 2008-03-26 2014-07-10 Adcatec Gmbh Kartusche und Kolben mit Entlüftungsvorrichtung
US8235255B2 (en) * 2008-07-02 2012-08-07 Nordson Corporation Pistons with a lip seal and cartridge systems using such pistons
US20100096404A1 (en) * 2008-10-17 2010-04-22 Melvin Seymour Cook Liquid distribution
US8511350B2 (en) * 2009-12-22 2013-08-20 Sulzer Mixpac Ag Piston setting device and method
KR102023143B1 (ko) * 2012-11-08 2019-09-19 술저 믹스팩 아게 2개 이상의 유동성 성분을 위한 카트리지
US9469061B2 (en) 2013-01-30 2016-10-18 Plas-Pak Industries Inc One-piece ventable piston for a dispensing apparatus, a dispensing apparatus with same, and method of making same
EP2873465A1 (fr) * 2013-11-18 2015-05-20 Sulzer Mixpac AG Piston pour distribuer un fluide d'une cartouche
EP2998030A1 (fr) 2014-09-17 2016-03-23 Sulzer Mixpac AG Piston destiné à une cartouche, cartouche et procédé pour purger l'air d'une cartouche
AU2016210598B9 (en) * 2015-08-05 2021-11-04 Illinois Tool Works Inc. Tool for forming a cartridge piston and method

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US3501063A (en) * 1968-04-05 1970-03-17 Superior Mfg Co Plunger assembly for multiloading hand grease guns
US3537621A (en) * 1968-08-09 1970-11-03 Walter A Jesse Mortar gun and disc therefor
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US4121739A (en) * 1977-04-20 1978-10-24 Illinois Tool Works Inc. Dispenser with unitary plunger and seal construction
DE3148490C2 (de) * 1981-12-08 1986-02-13 Alfred Fischbach Kg Kunststoff-Spritzgusswerk, 5250 Engelskirchen Bodenverschluß für einen hohlzylindrischen Strangpreßbehälter
DE29506800U1 (de) 1995-04-21 1996-08-29 Prestele, Eugen, 86161 Augsburg Entlüftungsvorrichtung
DE69736448T2 (de) * 1996-12-24 2007-01-04 Mixpac Systems Ag Dünnwandige Verpackung zur Verwendung in einer Kartusche
US6039215A (en) * 1998-06-12 2000-03-21 The Procter & Gamble Company Dual product pump dispenser with multi-outlet closure for product separation

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* Cited by examiner, † Cited by third party
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See references of WO0155006A1 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010164196A (ja) * 2008-12-12 2010-07-29 Sulzer Mixpac Ag カートリッジピストン
AU2010329898B2 (en) * 2009-12-11 2014-12-04 Sulzer Mixpac Ag Cartridge piston
CN111542399A (zh) * 2017-12-20 2020-08-14 苏尔寿混合技术有限公司 活塞、料筒以及使料筒排气的方法
CN111542399B (zh) * 2017-12-20 2022-05-17 苏尔寿混合技术有限公司 活塞、料筒以及使料筒排气的方法

Also Published As

Publication number Publication date
DE50100076C5 (de) 2007-10-11
DE20001438U1 (de) 2001-06-13
US6494348B2 (en) 2002-12-17
DE50100076D1 (de) 2003-02-06
EP1165400B1 (fr) 2003-01-02
US20020153391A1 (en) 2002-10-24
WO2001055006A1 (fr) 2001-08-02

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