ES2153450T3 - Procedimiento para el reacondicionamiento de barriles con espiche normalizados de plastico. - Google Patents

Procedimiento para el reacondicionamiento de barriles con espiche normalizados de plastico.

Info

Publication number
ES2153450T3
ES2153450T3 ES95114349T ES95114349T ES2153450T3 ES 2153450 T3 ES2153450 T3 ES 2153450T3 ES 95114349 T ES95114349 T ES 95114349T ES 95114349 T ES95114349 T ES 95114349T ES 2153450 T3 ES2153450 T3 ES 2153450T3
Authority
ES
Spain
Prior art keywords
barrel
cut
barrels
barrel body
welded
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.)
Expired - Lifetime
Application number
ES95114349T
Other languages
English (en)
Inventor
Udo Schutz
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.)
Schuetz GmbH and Co KGaA
Original Assignee
Schuetz GmbH and Co KGaA
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 Schuetz GmbH and Co KGaA filed Critical Schuetz GmbH and Co KGaA
Application granted granted Critical
Publication of ES2153450T3 publication Critical patent/ES2153450T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12469—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being asymmetric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • 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
    • B65D11/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
    • B65D11/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material of curved cross-section
    • B65D11/06—Drums or barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7154—Barrels, drums, tuns, vats

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Adornments (AREA)

Abstract

EL PROCESO PARA REACONDICIONAMIENTO DE BARRILES DE ESPICHE NORMALIZADOS DE PLASTICO, QUE SON ELABORADOS EN UNA SOLA PIEZA MEDIANTE MOLDEADO DE SOPLADO O A PARTIR DE UN CUERPO DE BARRIL CONFORMADO MEDIANTE SOPLADO, SE COMPONEN DE UN FONDO SUPERIOR SOLDADO, DISPONIENDO DE UNA APLICACION RENOVADA COMO BARRIL DE ESPICHE O PARA UNA UTILIZACION COMO BARRIL DE CUELLO AMPLIO CARACTERIZANDOSE POR LAS SIGUIENTES PARTICULARIDADES: A) SEPARACION MECANICA DEL FONDO (4) DE BARRIL SUPERIOR DE FORMA TRANSVERSAL CON RESPECTO AL EJE LONGITUDINAL DEL CUERPO DE BARRIL; B) MECANIZACION DEL BORDE (13) DE CORTE DE FORMA ANULAR DEL CUERPO DE BARRIL PARA LA ELABORACION DE UNA SUPERFICIE DE SOLDADURA LISA; C) LIMPIEZA DEL CUERPO (2) DE BARRIL; D) CALIBRACION DEL BORDE DE CORTE DEL CUERPO DE BARRIL; E1) SOLDADURA DE UN FONDO (4) SUPERIOR CON UN ESPICHE DE LLENADO Y UN ESPICHE DE VENTILACION SOBRE EL BORDE DE CORTE CALIBRADO DEL CUERPO DE BARRIL PARA LA ELABORACION DE BARRILES DE ESPICHE, PULIDO DE LA COSTURA DE SOLDADURA Y PRUEBA DE ESTANQUEIDAD DEL BARRIL DE ESPICHE; E2) SOLDADURA DE UN ANILLO (15) DE CUELLO CON UN BORDE QUE SOBRESALE EN EL REBORDE INFERIOR RADIALMENTE HACIA AFUERA, CUYO DIAMETRO ES MENOR QUE EL DIAMETRO DEL CUERPO DE BARRIL, SOBRE EL BORDE DE CORTE CALIBRADO PARA LA ELABORACION DE BARRILES DE CUELLO AMPLIO, PULIDO DE LA COSTURA DE SOLDADURA ENTRE EL CUERPO DE BARRIL Y EL ANILLO DE CUELLO, PRUEBA DE ESTANQUEIDAD DEL CUERPO DE BARRIL Y SUJECION DE UNA TAPA DE BARRIL DE CUELLO ANCHO O DE UNA TAPA DE ESPICHE SOBRE EL ANILLO DE CUELLO CON UN ANILLO DE SUJECION. LOS BARRILES DE CUELLO ANCHO Y DE ESPICHE REACONDICIONADOS TIENEN IGUAL VOLUMEN NOMINAL ASI COMO IGUAL ALTURA Y MEDIDA DE DIAMETRO SEGUN NORMA DIN.
ES95114349T 1994-09-20 1995-09-13 Procedimiento para el reacondicionamiento de barriles con espiche normalizados de plastico. Expired - Lifetime ES2153450T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4433418 1994-09-20

Publications (1)

Publication Number Publication Date
ES2153450T3 true ES2153450T3 (es) 2001-03-01

Family

ID=6528642

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95114349T Expired - Lifetime ES2153450T3 (es) 1994-09-20 1995-09-13 Procedimiento para el reacondicionamiento de barriles con espiche normalizados de plastico.

Country Status (7)

Country Link
US (1) US5665189A (es)
EP (1) EP0703064B1 (es)
AT (1) ATE198564T1 (es)
CA (1) CA2158613A1 (es)
DE (2) DE4437748C2 (es)
ES (1) ES2153450T3 (es)
MX (1) MX9504010A (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19641172C2 (de) * 1996-10-08 2000-07-13 Schuetz Werke Gmbh Co Kg Mehrwegfaß aus Metallblech
DE19811414C2 (de) * 1998-03-17 2002-04-18 Schuetz Werke Gmbh Co Kg Verfahren zur Herstellung von Spundfässern und Deckelfässern aus Kunststoff und Verfahren zum Rekonditionieren von Spundfässern
DE19938597C2 (de) * 1999-08-14 2001-08-23 Schuetz Gmbh & Co Kgaa Verfahren zum Rekonditionieren von Mehrwegfässern aus Metallblech
DE10005579A1 (de) * 2000-02-09 2001-08-30 Streuber Sulo Eisenwerk F Behälter mit Korpus und Deckel
GB2523202B (en) * 2014-02-18 2017-09-06 Petainer Large Container Ip Ltd Plastic Aerosol Container

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1117219A (fr) * 1954-12-03 1956-05-18 Récipient et son procédé de fabrication
US2943386A (en) * 1959-02-16 1960-07-05 Kingsland Drum & Barrel Co Inc Methods of reconditioning drums
US3510932A (en) * 1967-11-08 1970-05-12 Lammers Barrel Corp Method of reconditioning a metal drum
US3660188A (en) * 1969-10-24 1972-05-02 Inland Steel Co A method of recycling and reconditioning a metal shipping container
GB2052321B (en) * 1979-05-29 1983-04-07 Keg Services Ltd Repair of kegs and casks
GB8418842D0 (en) * 1984-07-24 1984-08-30 Rheem Blagden Ltd Drum reconditioning
NL8502035A (nl) * 1985-07-15 1987-02-02 Leer Koninklijke Emballage Werkwijze en inrichting voor het door stomp-spiegel-lassen met elkaar verbinden van een door extrusie verkregen vatromp met vatdeksel.
DE3539656C2 (de) 1985-11-08 1993-12-16 Bueco Buedenbender Gmbh & Co Spundfaß
GB8618114D0 (en) * 1986-07-24 1986-09-03 Alh Syst Ltd Joining of pipes
FR2618379B1 (fr) * 1987-08-06 1990-08-10 Sotralentz Sa Procede et installation pour la fabrication d'un fut a bondes en matiere thermoplastique et fut a bondes fabrique selon ce procede
DE8717571U1 (de) * 1987-11-07 1989-06-08 Sotralentz S.A., Drulingen, Bas-Rhin Faßgebinde mit Faßkörper und Deckel aus Kunststoff sowie Spannverschluß
DE3737977A1 (de) * 1987-11-08 1989-05-24 Hoesch Ag Behaelter mit integrierter ueberdrucksicherung
NL8801871A (nl) 1988-07-25 1990-02-16 Leer Koninklijke Emballage Vat bestaande uit een houder en een zak.
DE4022926C2 (de) * 1990-07-19 1994-08-04 Schuetz Werke Gmbh Co Kg Verfahren zur Herstellung von Fässern aus thermoplastischem Kunststoff und Anlage zur Durchführung des Verfahrens
DE4220339C2 (de) * 1992-06-23 1995-11-02 Schuetz Werke Gmbh Co Kg Verfahren zur Herstellung und zur Rekonditionierung von Spundfässern aus Kunststoff
DE9218003U1 (de) * 1992-10-28 1993-05-06 Mauser-Werke GmbH, 5040 Brühl Kunststoff-Faßdeckel
DE4242370C1 (de) * 1992-12-16 1994-05-11 Schuetz Werke Gmbh Co Kg Mehrwegfaß aus Kunststoff und Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
EP0703064A3 (de) 1999-02-24
CA2158613A1 (en) 1996-03-21
ATE198564T1 (de) 2001-01-15
US5665189A (en) 1997-09-09
EP0703064B1 (de) 2001-01-10
EP0703064A2 (de) 1996-03-27
MX9504010A (es) 1997-05-31
DE4437748C2 (de) 1996-07-04
DE59508951D1 (de) 2001-02-15
DE4437748A1 (de) 1996-03-28

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