ES2067751T3 - Procedimiento para la produccion de plastico celular. - Google Patents
Procedimiento para la produccion de plastico celular.Info
- Publication number
- ES2067751T3 ES2067751T3 ES90911316T ES90911316T ES2067751T3 ES 2067751 T3 ES2067751 T3 ES 2067751T3 ES 90911316 T ES90911316 T ES 90911316T ES 90911316 T ES90911316 T ES 90911316T ES 2067751 T3 ES2067751 T3 ES 2067751T3
- Authority
- ES
- Spain
- Prior art keywords
- plastic
- pressure
- compound
- continuous
- component
- 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
Links
- 238000000034 method Methods 0.000 title abstract 3
- 150000001875 compounds Chemical class 0.000 abstract 5
- 238000005057 refrigeration Methods 0.000 abstract 2
- 239000000654 additive Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000010924 continuous production Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000004898 kneading Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000010792 warming Methods 0.000 abstract 1
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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3442—Mixing, kneading or conveying the foamable material
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/303—Extrusion nozzles or dies using dies or die parts movable in a closed circuit, e.g. mounted on movable endless support
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/793—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling upstream of the plasticising zone, e.g. heating in the hopper
- B29C48/797—Cooling
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
- B29C48/87—Cooling
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/91—Heating, e.g. for cross linking
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/904—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using dry calibration, i.e. no quenching tank, e.g. with water spray for cooling or lubrication
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Prostheses (AREA)
- Magnetic Record Carriers (AREA)
- Fuel Cell (AREA)
Abstract
UN PROCESO PARA LA PRODUCCION CONTINUA O SEMICONTINUA DE UN MATERIAL DE PLASTICO CELULAR A PARTIR DE UN COMPUESTO DE PLASTICO QUE CONTIENE UN AGENTE SOPLADOR Y, OPCIONALMENTE, OTRAS SUSTANCIAS REGULADORAS DEL PROCESO Y ADITIVOS, QUE CONSISTE EN: (A) ALIMENTAR LA MATERIA PRIMA A UNA MAQUINA PROCESADORA DE PLASTICO; (B) AMASAR LA MATERIA PRIMA EN LA MAQUINA PROCESADORA DE PLASTICO BAJO CONDICIONES DE TEMPERATURA Y PRESION QUE PRODUCIRAN UN COMPUESTO EXTENSIBLE AL LIBERAR SOLO LA PRESION; (C) TRANSFERIR EL COMPUESTO DE PLASTICO A UNA ZONA DE REFRIGERACION DIRECTAMENTE; (D) ENFRIAR EL COMPONENTE EN LA ZONA DE REFRIGERACION HASTA CONSEGUIR UN ARTICULO CONTINUO QUE TENGA UNA GRAN VISCOSIDAD Y RIGIDEZ Y UN PESTIL DE VELOCIDAD APROXIMADAMENTE PLANO BAJO LA PRESION FORMADA POR UN COMPONENTE DE PRESION DIRIGIDO CORRIENTE ARRIBA; (E) OPCIONALMENTE, TRANSFERIRLO DE MANERA CONTINUA A UNA ZONA DE RETENCION, FRENADO; (F) ESTRATIFICAR EL COMPONENTE DE PRESION DIRIGIDO HACIA ARRIBA HASTA QUE LA PRESION EN LA MASA DE PLASTICO EN LAS ZONAS QUE SE ENCUENTRAN CORRIENTE ARRIBA SEA SUFICIENTE PARA EVITAR LA EXPANSION DEL COMPUESTO DE PLASTICO; (G) CONTROLAR PARA EXPANDIR EL COMPUESTO A LA DENSIDAD DESEADA DESPUES DE TRANSFERIRLO A LA ZONA DE FORMACION/EXPANSION/CALENTAMIENTO.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO892921A NO892921D0 (no) | 1989-07-17 | 1989-07-17 | Fremgangsmaate for fremstilling av celleplast. |
NO89894583A NO894583L (no) | 1989-07-17 | 1989-11-17 | Fremgangsmaate for fremstilling av celleplast. |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2067751T3 true ES2067751T3 (es) | 1995-04-01 |
Family
ID=26648172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES90911316T Expired - Lifetime ES2067751T3 (es) | 1989-07-17 | 1990-07-16 | Procedimiento para la produccion de plastico celular. |
Country Status (20)
Country | Link |
---|---|
US (1) | US5277852A (es) |
EP (1) | EP0483230B1 (es) |
JP (1) | JPH05500779A (es) |
KR (1) | KR920703314A (es) |
CN (1) | CN1029316C (es) |
AR (1) | AR244734A1 (es) |
AT (1) | ATE117937T1 (es) |
AU (1) | AU642894B2 (es) |
BR (1) | BR9007538A (es) |
CA (1) | CA2064199A1 (es) |
DE (1) | DE69016659T2 (es) |
DK (1) | DK170990A (es) |
ES (1) | ES2067751T3 (es) |
FI (1) | FI903586A0 (es) |
IE (1) | IE902585A1 (es) |
NO (1) | NO894583L (es) |
PL (1) | PL165163B1 (es) |
RU (1) | RU2033925C1 (es) |
SE (1) | SE505638C2 (es) |
WO (1) | WO1991001212A1 (es) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT393272B (de) * | 1989-06-07 | 1991-09-25 | Rettenbacher Markus Dipl Ing | Verfahren zur herstellung von extrudierten, direkt expandierten biopolymerprodukten und holzfaserplatten, verpackungs- und isoliermaterialien |
NO178771C (no) * | 1993-09-15 | 1996-05-29 | Polynor Partners As | Fremgangsmåte for fremstilling av produkt av lett celleplast med lukkede celler |
US5731537A (en) * | 1996-05-09 | 1998-03-24 | Sassaman; Glenn Eldridge | System and method for reforming shotshells |
US5786000A (en) * | 1996-08-28 | 1998-07-28 | Berner; Rolf E. | Continuous molding machine with pusher |
US7763345B2 (en) | 1999-12-14 | 2010-07-27 | Mannington Mills, Inc. | Thermoplastic planks and methods for making the same |
US6444154B1 (en) * | 2000-12-20 | 2002-09-03 | General Electric Company | Continuous preparation of a liquid silicone rubber composition |
US8028486B2 (en) | 2001-07-27 | 2011-10-04 | Valinge Innovation Ab | Floor panel with sealing means |
US7951449B2 (en) * | 2002-06-27 | 2011-05-31 | Wenguang Ma | Polyester core materials and structural sandwich composites thereof |
TWI226350B (en) * | 2002-12-26 | 2005-01-11 | Ind Tech Res Inst | Open-cell microcellular polystyrene foams and method for making the same |
US7585557B2 (en) * | 2004-02-17 | 2009-09-08 | Eastman Kodak Company | Foam core imaging element with gradient density core |
US7037634B2 (en) * | 2004-02-27 | 2006-05-02 | Eastman Kodak Company | Polymer foam surface smoothing materials and method |
US7033723B2 (en) * | 2004-02-27 | 2006-04-25 | Eastman Kodak Company | Surface roughness frequency to control pits on foam core imaging supports |
SE530653C2 (sv) | 2006-01-12 | 2008-07-29 | Vaelinge Innovation Ab | Fuktsäker golvskiva samt golv med ett elastiskt ytskikt omfattande ett dekorativt spår |
NL2003019C2 (nl) | 2009-06-12 | 2010-12-15 | 4Sight Innovation Bv | Vloerpaneel en vloerbedekking bestaande uit meerdere van dergelijke vloerpanelen. |
NL2018781B1 (en) | 2017-04-26 | 2018-11-05 | Innovations4Flooring Holding N V | Panel and covering |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3310617A (en) * | 1963-06-19 | 1967-03-21 | Shell Oil Co | Process for preparing uniform melt dispersion of blowing agent and polymer and its use in making foamed products |
US3391051A (en) * | 1965-04-19 | 1968-07-02 | Bell & Richardson Inc De | Thermoplastic foam sheet material and apparatus for the manufacture thereof |
NL6701289A (es) * | 1967-01-27 | 1967-04-25 | ||
DE1704837B2 (de) * | 1967-07-18 | 1974-07-18 | Metzeler Ag, 8000 Muenchen | Vorrichtung zum kontinuierlichen Herstellen von Rechteck-Schaumstoffblöcken |
BE789774A (fr) * | 1972-02-18 | 1973-02-01 | Sinclair Koppers Co | Procede et appareil pour la fabrication de profiles en mousse |
US4049760A (en) * | 1973-03-16 | 1977-09-20 | Societe Chimique Des Charbonnages | Method of manufacture of foamed thermo-plastic extruded shapes |
US4017245A (en) * | 1974-07-26 | 1977-04-12 | Foster Grant Co., Inc. | Apparatus for extruding expandable thermoplastic material |
JPS527022A (en) * | 1975-07-05 | 1977-01-19 | Ichirou Kikuchi | Improved typed earthquake proof self gas stop device |
US4187066A (en) * | 1977-10-07 | 1980-02-05 | H & S Industries, Inc. | Apparatus for the preparation of display blocks of urea formaldehyde foam |
JPS5645928A (en) * | 1979-09-21 | 1981-04-25 | Teijin Ltd | Production of polyester extruded expanded article |
DE3016926C2 (de) * | 1980-05-02 | 1982-08-12 | Heggenstaller, Anton, 8891 Unterbernbach | Vorrichtung zum Aushärten stranggepreßter Körper |
US4344710A (en) * | 1980-06-10 | 1982-08-17 | Mobil Oil Corporation | Polymer foam extrusion system |
US4456571A (en) * | 1982-12-13 | 1984-06-26 | Mobil Oil Corporation | Process and apparatus for forming a composite foamed polymeric sheet structure having comparatively high density skin layers and a comparatively low density core layer |
US4657715A (en) * | 1984-12-31 | 1987-04-14 | Mobil Oil Corporation | Process for preparing smooth skinned extruded foams with water-organic blowing agent |
US4773448A (en) * | 1987-02-26 | 1988-09-27 | Francis Norman L | Freeze-resistant plastic pipe and method for its manufacture |
US4789513A (en) * | 1987-06-05 | 1988-12-06 | P.C.E. Corp. | Coextrusion apparatus and process |
US4960549A (en) * | 1988-05-23 | 1990-10-02 | Amoco Corporation | Process for preparing polyamide-imide foam |
US5116881A (en) * | 1990-03-14 | 1992-05-26 | James River Corporation Of Virginia | Polypropylene foam sheets |
-
1989
- 1989-11-17 NO NO89894583A patent/NO894583L/no unknown
-
1990
- 1990-07-16 AU AU60512/90A patent/AU642894B2/en not_active Ceased
- 1990-07-16 AT AT90911316T patent/ATE117937T1/de not_active IP Right Cessation
- 1990-07-16 ES ES90911316T patent/ES2067751T3/es not_active Expired - Lifetime
- 1990-07-16 US US07/820,860 patent/US5277852A/en not_active Expired - Fee Related
- 1990-07-16 IE IE258590A patent/IE902585A1/en not_active Application Discontinuation
- 1990-07-16 DK DK170990A patent/DK170990A/da not_active Application Discontinuation
- 1990-07-16 AR AR90317377A patent/AR244734A1/es active
- 1990-07-16 KR KR1019920700105A patent/KR920703314A/ko not_active Application Discontinuation
- 1990-07-16 EP EP90911316A patent/EP0483230B1/en not_active Expired - Lifetime
- 1990-07-16 WO PCT/NO1990/000118 patent/WO1991001212A1/en active IP Right Grant
- 1990-07-16 JP JP2510542A patent/JPH05500779A/ja active Pending
- 1990-07-16 CA CA002064199A patent/CA2064199A1/en not_active Abandoned
- 1990-07-16 BR BR909007538A patent/BR9007538A/pt unknown
- 1990-07-16 FI FI903586A patent/FI903586A0/fi not_active IP Right Cessation
- 1990-07-16 DE DE69016659T patent/DE69016659T2/de not_active Expired - Fee Related
- 1990-07-17 SE SE9002455A patent/SE505638C2/sv not_active IP Right Cessation
- 1990-07-17 PL PL90286085A patent/PL165163B1/pl unknown
- 1990-07-17 CN CN90107076A patent/CN1029316C/zh not_active Expired - Fee Related
-
1992
- 1992-01-16 RU SU925010963A patent/RU2033925C1/ru active
Also Published As
Publication number | Publication date |
---|---|
EP0483230A1 (en) | 1992-05-06 |
JPH05500779A (ja) | 1993-02-18 |
SE9002455L (sv) | 1991-01-18 |
SE505638C2 (sv) | 1997-09-22 |
IE902585A1 (en) | 1991-02-27 |
AR244734A1 (es) | 1993-11-30 |
SE9002455D0 (sv) | 1990-07-17 |
AU642894B2 (en) | 1993-11-04 |
CA2064199A1 (en) | 1991-01-18 |
DE69016659T2 (de) | 1995-09-07 |
FI903586A0 (fi) | 1990-07-16 |
CN1052489A (zh) | 1991-06-26 |
DE69016659D1 (de) | 1995-03-16 |
CN1029316C (zh) | 1995-07-12 |
NO894583D0 (no) | 1989-11-17 |
AU6051290A (en) | 1991-02-22 |
PL165163B1 (pl) | 1994-11-30 |
DK170990D0 (da) | 1990-07-16 |
US5277852A (en) | 1994-01-11 |
NO894583L (no) | 1991-01-18 |
KR920703314A (ko) | 1992-12-17 |
ATE117937T1 (de) | 1995-02-15 |
DK170990A (da) | 1991-01-18 |
RU2033925C1 (ru) | 1995-04-30 |
WO1991001212A1 (en) | 1991-02-07 |
BR9007538A (pt) | 1992-06-23 |
PL286085A1 (en) | 1991-04-08 |
EP0483230B1 (en) | 1995-02-01 |
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