EP0270467A1 - Spender für pastöse Produkte und Verfahren zur Einführung des Kolbens - Google Patents

Spender für pastöse Produkte und Verfahren zur Einführung des Kolbens Download PDF

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Publication number
EP0270467A1
EP0270467A1 EP87420299A EP87420299A EP0270467A1 EP 0270467 A1 EP0270467 A1 EP 0270467A1 EP 87420299 A EP87420299 A EP 87420299A EP 87420299 A EP87420299 A EP 87420299A EP 0270467 A1 EP0270467 A1 EP 0270467A1
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EP
European Patent Office
Prior art keywords
piston
diameter
relief
skirt
tubular body
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
EP87420299A
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English (en)
French (fr)
Other versions
EP0270467B1 (de
Inventor
Alain Jupin
Bernard Schneider
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.)
Albea Tubes France SAS
Original Assignee
Cebal SAS
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9340569&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0270467(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cebal SAS filed Critical Cebal SAS
Priority to AT87420299T priority Critical patent/ATE57666T1/de
Publication of EP0270467A1 publication Critical patent/EP0270467A1/de
Application granted granted Critical
Publication of EP0270467B1 publication Critical patent/EP0270467B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K5/00—Holders or dispensers for soap, toothpaste, or the like
    • A47K5/06—Dispensers for soap
    • A47K5/12—Dispensers for soap for liquid or pasty soap
    • A47K5/1201—Dispensers for soap for liquid or pasty soap hand-carried
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall

Definitions

  • the invention relates to the field of dispensers for pasty products and more particularly those comprising means for conveying a pasty product from the interior of a tubular body to a distribution conduit by compressions and by successive aspirations, the pasty product being supported by a flexible lip piston which slides in the skirt of the tubular body.
  • pasty product designates here any product of pasty consistency which can be dispensed by means of such a dispenser, whether it is described as paste, gel or thick cream.
  • Patent EP-B-0048420 (US-A4 402 431) describes a dispenser for pasty product comprising a cylindrical body, having at its top a covering surface, and a piston which is applied sealingly by its circumference against the wall. inside of this cylindrical body and follows the advance of the pasty product in the direction of the covering surface, advance resulting from a vacuum and atmospheric pressure, and also comprising a diaphragm pump having an inlet valve included in the surface cover, a dispenser expulsion valve and between these two valves an elastically compressible pump cavity, closed except for the valves, the dispenser having the following desired air leaks not letting the pasty product contained in the distributor: - a rough condition of the cylindrical inner wall of the distributor body in the region of insertion of the piston, the roughness of the wall then allowing air to escape during the insertion of the piston until contact with the product pasty; - a wedge-shaped gap allowing air to pass but not the pasty product, between a plug closing the exhaust or distributor distribution orifice and an inner edge from this hole
  • the first means requires a particular operation to create this rough surface
  • the second means involves the use of a tongue or cover comprising this plug, in addition to the cover covering the head of the dispenser.
  • the problem of the evacuation of the air which would otherwise be trapped between the piston and the pasty product during the installation of the piston is particularly important, and the Applicant sought to solve it in a way not requiring special manufacturing operation.
  • the Applicant has likewise sought to solve the related problem of evacuating the air present in the container through the dispensing orifice, without introducing any additional operation or additional part.
  • the air leakage means of the tubular body during the insertion of the piston into this body until contact with the pasty product which is contained therein, consists of a transverse internal relief located at the bottom of said circular cylindrical skirt and of minimum internal diameter 0.3 to 1.5 mm less than the internal diameter of said skirt, as well as in a flared entry zone of this relief with an internal diameter decreasing from an engagement diameter at least equal to the external diameter at the free state of the flexible lip of the piston up to said minimum internal diameter of said relief, and the external diameter of the central part of the piston is at least 0.4 mm less than said minimum internal diameter of said relief.
  • these bodies each comprising a cylindrical skirt diameter 40 x thickness 1 mm in HDPE, and at the bottom of this skirt the transverse internal relief and the flared entry area of the invention, it has been observed on several dozens of tests that the air between the flexible lip piston escaped satisfactorily.
  • the flexible flared peripheral lip of the piston typically has a profile in axial section called a "knife blade" with at its birth a thickness of 0.6 mm and near its end, on 1 to 2 mm, a thickness of 0.2 to 0.4 mm, and this flared lip has an outer end diameter greater than 0.1 to 0.5 mm than the inner diameter of the circular cylindrical skirt of the tubular body and an inclination usually between 10 and 30 ° relative to to the axis of the piston and of this skirt.
  • This lip is spaced from the bottom disc constituting the front of the piston, and slightly recessed with respect to the contact surface of this disc with the pasty product, so that it is little influenced by this contact.
  • the displacement speed of the piston must be between 40 and 300 mm / s and preferably between 80 and 150 mm / s, this from the introduction of the flexible lip in the flared entry zone of the tubular body. It is important that, during the introduction of the piston, the rigid median part in withdrawal passes through the transverse internal relief of the tubular body without any friction, so as to cause neither irregularities of advance nor deviations of the piston. For this reason, the outside diameter of this middle part, between the flexible upper lip and the semi-rigid flared lower end, is at least 0.4 mm less than the minimum inside diameter of this transverse inside relief.
  • the flexible lip of the piston typically having an external diameter greater than 0.1 to 0.5 mm than the internal diameter of the circular cylindrical skirt of the tubular body, preferably a minimum internal diameter less than 0.4 is chosen for the transverse internal relief. 1.2 mm to the inside diameter of this cylindrical skirt. Furthermore, in all cases, it is advantageous to have in the transverse relief one or more interruptions, of limited length so as not to interfere too much with the formation of small undulations on the end of the flexible lip, in practice of unit length. between 0.5 and 3 mm, these interruptions allowing or helping the evacuation of air, in particular during the passage of the semi-rigid flared lower end of the piston through the transverse internal relief.
  • the correct control of the deformation in the constriction of the end of the flexible lip is preferred for the correct control of the deformation in the constriction of the end of the flexible lip to have a flared entry zone of the transverse internal relief of the tubular body substantially frustoconical with a half cone angle of 10 to 25 ° relative to its axis of revolution coincident with the longitudinal axis of the circular cylindrical skirt.
  • an enlargement zone which is too long up to the internal surface of the cylindrical skirt would have the double disadvantage of compromising the maintenance of the small undulations of the end of the lip. flexible until the piston stops and reduce the filling rate of the distributor. It is therefore preferred to have less than 2 mm between the zone of minimum internal diameter of the transverse internal relief and the cylindrical internal surface of the skirt.
  • the internal transverse internal relief and the flared entry zone according to the invention can be obtained in a simple manner using an attached foot, an internal portion of which having a zone of lower minimum internal diameter of a value between 0.3 and 1.5 mm to the inside diameter of the circular cylindrical skirt fits at least over part of its height at inside the bottom of this skirt.
  • This inner portion of minimum inner diameter then usually has a height of between 3 and 12 mm, and is preceded by a flared entry area also forming part of the foot.
  • This added foot can be fixed to the skirt, for example by gluing its nested part.
  • the problem of the air leak located on the dispensing head to allow the evacuation of the air possibly occluded in the pasty product while avoiding its drying and without letting pass pasty product is preferably solved by using a small rib of typical height 0.05 to 0.15 mm carried by the end surface of the periphery of the outlet orifice of the distribution duct of the head, this flat or convex end surface being complementary to the corresponding internal surface of the hood.
  • This solution is simple and does not require the addition of any new part: the hood sinking tightly onto the head and its dispensing orifice, for example with simple forcing, or snap-fastening or screwing, the addition of this small relief does not disturb this depression and provides the desired small leak.
  • the invention applies in particular to a new type of dispenser, used for the tests, a brief description of which will be given on the subject of these tests.
  • This dispenser is more fully described in our French patent application No. 86-14348 of 13 October 1986.
  • the dispenser body of the invention may be made of one or more materials, comprising in particular PE HD, polypropylene, thermoplastic polymers, glass, metal such as aluminum, and in the case of the cylindrical skirt the metalloplastic complexes.
  • the tubular body is in one piece or with attached foot, its transverse internal relief and its flared entry area being obtained by molding, by forming or by assembly of an added foot.
  • the outside diameter of its cylindrical skirt is typically between 20 and 50 mm.
  • the following arrangements are preferably adopted: - the outside diameter of the flexible lip is 0.2 to 0.4 mm greater than the inside diameter of the circular cylindrical skirt; - The flared entry area of the tubular body is substantially frustoconical with a cone half-angle between 10 and 25 °; - the inner cylindrical surface of the skirt is caught less than 2 mm after the zone of minimum internal diameter of the transverse relief of the tubular body.
  • FIG. 1 represents a first distributor according to the invention, used for the tests, in longitudinal axial half-section.
  • Figure 2 shows the bottom of the tubular body and the piston of this first distributor, at higher magnification, also in longitudinal axial half-section.
  • Figure 3 shows the bottom of the tubular body and the attached foot of a second distributor according to the invention, in axial, longitudinal half-section.
  • FIG. 4 shows the periphery of the dispensing orifice of a dispenser according to the invention, in partial horizontal section passing through a fine rib creating an air leak.
  • This distributor 1 (FIG. 1) comprises a distribution head 2 and a body 3, this body 3 comprising on the one hand a tubular body 4 which comprises a circular cylindrical skirt 5 and a foot 6, on the other hand a sliding piston 7 with flexible flared upper lip 8 sliding inside the skirt 5 ensuring sealing, and finally a crown 9, here molded onto the extruded skirt 5 and itself comprising a central orifice 10 surrounded by an annular surface d 'support 11 constituting the seat of a suction valve 11,12, of the pasty product, the valve 12 of which comprises an upper veil 13, the annular rim 14 of which obtains the orifice 10 by applying to the surface 11, and an underlying portion 15 engaged in this orifice 10 and provided with retaining bosses 16 of cylinder diameter circumscribed by 1 to 2 mm greater than the diameter of the orifice 10, snapped into force through this orifice 10.
  • the dispensing head 2 comprises: - An actuator 17 which comprises on the one hand a fixed part 18 comprising an outer skirt 19 carrying at its lower part a fixing means 20 on the top 9 of the body 3 of the distributor 1, and on the other hand a tilting central part 21 connected to its fixed part 18 by a deformable tab 32 and comprising a support veil 22 as well as a distribution duct 23 opening into a longitudinal chimney 24 which is carried by the underside of the support veil 22 and fits in a sealed manner the upper tube 25 of a deformable cup 26 forming with the support veil 22 and with the top 9 of the body 3 of the distributor a compression chamber 27, the bottom surface 28 of the support veil 22 at the bottom of this chimney 24 being planar or of weak curvature; - the deformable cup 26 which is in one piece and comprises, going from the bottom to the top: a sealed fixing means 29 on the top 2 of the body 3 of the distributor, then a deformable veil 30, then the upper tube 25 surmounted by a flexible upper lip 31 which forms
  • the removable cover 33 is simply pressed onto the dispensing head 2, in clamping on the outer skirt 19 and resting on the end 34 of the dispensing conduit 23.
  • the tubular body 4 of the body 3 comprises (FIGS. 1 and 2), at the bottom of its circular cylindrical skirt 5, a transverse internal relief 35 preceded by a flared entry area 36.
  • the minimum internal diameter of the relief 35 is 32.2 mm, while the internal diameter of the skirt 5 of diameter 35 mm outside and 1 mm thick is 33 mm.
  • the flared entrance area 36 is frustoconical of revolution around the axis X of the skirt 5, with a cone half-angle ⁇ of 15 ° ( Figure 2), the height of this frustoconical area is 4 mm and its engagement diameter 34 mm.
  • the piston 7 with a total height of 15 mm and made of HDPE has at the front a bottom disc 37 with a thickness of 0.8 mm, molded so as to best reduce the residual volume of the storage chamber 38 between this disc 37 and the top 9 of the body 3 of the dispenser (FIG. 1) at the end of the guide then (FIG.
  • the dispensers were filled with toothpaste, upside down, as usual, up to 18 to 20 mm from the lower end of the cylindrical skirt 5, that is to say substantially at the same distance below of the zone of minimum diameter 32.2 mm of the transverse relief 35 which ends fairly abruptly, in less than 1 mm, on the side of the skirt 5. Then, the insertions of the pistons 7 are made using a device of the corkscrew type, ensuring correct guiding and manual control by lever.
  • the driving speeds achieved were between 60 and 80 mm / s - Thirty distributors in a first group had a transverse relief 35 without interruption, and fifteen additional distributors had a similar relief 35 with an interruption of length approximately 2 mm and bottom diameter close to the inside diameter of the skirt 5, prepared in recovery.
  • FIG. 3 shows a molded foot 60 comprising an enlarged support base 61, and two upper circular lower 62 and outer 63 lips, each 0.5 mm thick and 4 mm high, leaving between them a circular groove 64 in which fits the lower end 51 of the circular cylindrical skirt 50 of the tubular body.
  • the internal diameter of the skirt 50 with a thickness of 1 mm is 33 mm as before, and the internal part 351 of the foot 60, fitting by its internal lip 62 into the end 51 of the skirt 50, constitutes an internal relief transverse 350, the minimum internal diameter area 352 having a height of 8 mm.
  • This zone 352 is preceded by a flared and slightly curved entry zone 360 of inclination 15 to 20 ° in its engagement part of the flexible lip of the piston, which is the same as in the example and the previous tests.
  • This molded foot 60 is made of polypropylene, the end 51 of the skirt 50 is fixed in its double lip 62, 63 by gluing.
  • Figure 4 shows a partial horizontal section of the distribution conduit 23 of an actuator 17 ( Figure 1).
  • the cover 33 of the distributor has an inclined portion which comes to bear on the end surface 340 of the conduit 23 complementary to the corresponding interior surface of the cover.
  • This end surface 340 surrounding the orifice 341 has a small rib 342 here substantially vertical, exceeding this surface by a height H of 0.1 mm, and of length about 1 mm.
  • This small relief is sufficient so that the support of the cover on the end of the duct is not perfect, therefore not airtight, but still airtight with respect to the pasty product dispensed. The evacuation of air from the pasty product when the cover is closed is thus correctly carried out on the side of its distribution.
  • the dispenser of the invention made inviolable by its transverse internal relief, is typically used for the packaging and distribution of hygienic and cosmetic products, in the form of pastes or gels, in particular toothpaste, and for food products are formed. thick pastes or creams, for example condiments and toppings.

Landscapes

  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Closures For Containers (AREA)
  • Confectionery (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Beans For Foods Or Fodder (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Noodles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Pinball Game Machines (AREA)
  • Coating Apparatus (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
EP87420299A 1986-11-03 1987-10-30 Spender für pastöse Produkte und Verfahren zur Einführung des Kolbens Expired - Lifetime EP0270467B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87420299T ATE57666T1 (de) 1986-11-03 1987-10-30 Spender fuer pastoese produkte und verfahren zur einfuehrung des kolbens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8615443 1986-11-03
FR8615443A FR2605983B1 (fr) 1986-11-03 1986-11-03 Distributeur pour produit pateux et procede d'introduction de son piston a l'interieur de son corps tubulaire

Publications (2)

Publication Number Publication Date
EP0270467A1 true EP0270467A1 (de) 1988-06-08
EP0270467B1 EP0270467B1 (de) 1990-10-24

Family

ID=9340569

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420299A Expired - Lifetime EP0270467B1 (de) 1986-11-03 1987-10-30 Spender für pastöse Produkte und Verfahren zur Einführung des Kolbens

Country Status (11)

Country Link
US (1) US4809887A (de)
EP (1) EP0270467B1 (de)
AT (1) ATE57666T1 (de)
DE (1) DE3765757D1 (de)
DK (1) DK572287A (de)
ES (1) ES2018571B3 (de)
FI (1) FI874812A (de)
FR (1) FR2605983B1 (de)
GR (1) GR3001029T3 (de)
IS (1) IS1399B6 (de)
NO (1) NO874541L (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351441A1 (de) * 1988-07-21 1990-01-24 Alfred Fischbach Kunststoffspritzgusswerk Kartusche für plastische Massen

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649967B1 (fr) * 1989-07-19 1991-09-20 Cebal Procede d'introduction d'un opercule a coulissement etanche dans un corps tubulaire cylindrique et dispositif correspondant
US5052592A (en) * 1989-08-14 1991-10-01 Bramlage Gesellschaft Mit Beschrankter Haftung Dispenser for paste compositions
FR2690422B1 (fr) * 1992-04-22 1995-03-31 Sofab Dispensateur de produits fluides.
US5449094A (en) * 1992-05-18 1995-09-12 Sofab Dispenser with plunging sleeve
IT1256628B (it) * 1992-12-04 1995-12-12 Distributore di sostanze fluide, con testa deformabile
US5961007A (en) * 1998-06-15 1999-10-05 The Procter & Gamble Company Dispensing package
NL1023670C1 (nl) * 2002-07-03 2004-01-06 Keltub B V Samenstel van balg en afroldeel, pomp en werkwijze voor het gebruik daarvan.
FR2900643B1 (fr) * 2006-05-05 2008-10-10 Airlessystems Soc Par Actions Organe de distribution de produit fluide et distributeur comprenant un tel organe de distribution
FR2948861B1 (fr) * 2009-08-07 2013-08-30 Chanel Parfums Beaute Dispositif de produit cosmetique presentant un orifice de distribution
US8668119B2 (en) * 2009-09-03 2014-03-11 James Wheeler Container for viscous comestibles
CN105346823A (zh) * 2015-12-01 2016-02-24 上海洁诺德塑胶制品有限公司 自动泵压式牙膏包装瓶
FR3068265B1 (fr) * 2017-06-28 2022-02-25 Gb Dev Distributeur de fluide par pression sur une paroi deformable du contenant
CN114521185B (zh) * 2019-07-23 2024-08-06 里克包装系统有限公司 具有内部塞件密封的全聚合物泵分配器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117296A1 (de) * 1983-01-29 1984-09-05 von Schuckmann, Alfred Spender zur portionierten Ausgabe insbesondere pastöser Massen
EP0179342A2 (de) * 1984-10-20 1986-04-30 Bramlage GmbH Spender für pastöse Massen
FR2581370A1 (fr) * 1985-05-06 1986-11-07 Cebal Distributeur pour produits pateux
EP0213048A1 (de) * 1985-07-24 1987-03-04 Cebal Spender für pastöse oder sahnige Produkte

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1070728A (fr) * 1952-02-19 1954-08-10 Gestetner Ltd Perfectionnement aux tubes destinés à contenir de l'encre ou analogue
DE2611644A1 (de) * 1976-03-19 1977-09-29 Henkel & Cie Gmbh Behaelter fuer kosmetika
US4331267A (en) * 1980-08-15 1982-05-25 Tri-Made Products, Inc. Caulking tube plunger and enclosure assembly
DE3035705A1 (de) * 1980-09-22 1982-05-06 Henkel KGaA, 4000 Düsseldorf Spender
DE3104726A1 (de) * 1981-02-11 1982-08-12 Vereinigte Deutsche Metallwerke Ag, 6000 Frankfurt Verpackungsbehaelter fuer dickfluessige und pastoese fuellgueter
DE3148490C2 (de) * 1981-12-08 1986-02-13 Alfred Fischbach Kg Kunststoff-Spritzgusswerk, 5250 Engelskirchen Bodenverschluß für einen hohlzylindrischen Strangpreßbehälter
DE3224199A1 (de) * 1982-06-29 1983-12-29 Josef Wischerath GmbH & Co, 5000 Köln Spender fuer pastoese produkte
DE3405547A1 (de) * 1984-02-16 1985-08-14 Hilti Ag, Schaan Auspresskolben fuer behaelter
US4685594A (en) * 1986-07-03 1987-08-11 Manuel Czech Dispenser for paste-like products

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117296A1 (de) * 1983-01-29 1984-09-05 von Schuckmann, Alfred Spender zur portionierten Ausgabe insbesondere pastöser Massen
EP0179342A2 (de) * 1984-10-20 1986-04-30 Bramlage GmbH Spender für pastöse Massen
FR2581370A1 (fr) * 1985-05-06 1986-11-07 Cebal Distributeur pour produits pateux
EP0213048A1 (de) * 1985-07-24 1987-03-04 Cebal Spender für pastöse oder sahnige Produkte

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351441A1 (de) * 1988-07-21 1990-01-24 Alfred Fischbach Kunststoffspritzgusswerk Kartusche für plastische Massen

Also Published As

Publication number Publication date
DE3765757D1 (de) 1990-11-29
FI874812A0 (fi) 1987-11-02
DK572287D0 (da) 1987-11-02
FI874812A (fi) 1988-05-04
EP0270467B1 (de) 1990-10-24
FR2605983B1 (fr) 1988-12-02
GR3001029T3 (en) 1992-01-20
ATE57666T1 (de) 1990-11-15
FR2605983A1 (fr) 1988-05-06
NO874541D0 (no) 1987-11-02
US4809887A (en) 1989-03-07
DK572287A (da) 1988-05-04
NO874541L (no) 1988-05-04
IS3276A7 (is) 1988-05-04
IS1399B6 (is) 1989-12-15
ES2018571B3 (es) 1991-04-16

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