FR2545034B1 - Procede et dispositif d'extrusion pour la fabrication de profiles a partir d'un ou plusieurs melanges differents de caoutchouc ou de matieres plastiques - Google Patents
Procede et dispositif d'extrusion pour la fabrication de profiles a partir d'un ou plusieurs melanges differents de caoutchouc ou de matieres plastiquesInfo
- Publication number
- FR2545034B1 FR2545034B1 FR8312654A FR8312654A FR2545034B1 FR 2545034 B1 FR2545034 B1 FR 2545034B1 FR 8312654 A FR8312654 A FR 8312654A FR 8312654 A FR8312654 A FR 8312654A FR 2545034 B1 FR2545034 B1 FR 2545034B1
- Authority
- FR
- France
- Prior art keywords
- profiles
- plastics
- rubber
- manufacture
- extrusion process
- 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
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
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
-
- 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
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
-
- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92019—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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/9218—Weight
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92361—Extrusion unit
- B29C2948/92409—Die; 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92438—Conveying, transporting or storage of articles
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92647—Thickness
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; 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
- B29C48/03—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
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
- B29L2030/002—Treads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3315184A DE3315184C1 (de) | 1983-04-27 | 1983-04-27 | Verfahren und Strangpresseinrichtung zum UEberwachen der Herstellung von Profilen aus einer oder mehreren Kautschuk- oder Kunststoffmischungen |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2545034A1 FR2545034A1 (fr) | 1984-11-02 |
FR2545034B1 true FR2545034B1 (fr) | 1988-04-22 |
Family
ID=6197448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8312654A Expired FR2545034B1 (fr) | 1983-04-27 | 1983-08-01 | Procede et dispositif d'extrusion pour la fabrication de profiles a partir d'un ou plusieurs melanges differents de caoutchouc ou de matieres plastiques |
Country Status (8)
Country | Link |
---|---|
US (1) | US4515738A (fr) |
JP (1) | JPS59199230A (fr) |
BR (1) | BR8304039A (fr) |
DE (1) | DE3315184C1 (fr) |
FR (1) | FR2545034B1 (fr) |
GB (1) | GB2141844B (fr) |
IT (1) | IT1164304B (fr) |
SU (1) | SU1175359A3 (fr) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2166568B (en) * | 1984-09-22 | 1987-12-31 | Berstorff Gmbh Masch Hermann | A method and apparatus for monitoring deviations in the dimensions of a continuously extruded profile strip |
DE3434904C1 (de) * | 1984-09-22 | 1985-10-17 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover | Verfahren und Anlage zum UEberwachen der Abmessungen eines aus einer oder mehreren Mischungen bestehenden,kontinuierlich extrudierten Profilbandes aus Kautschuk oder thermoplastischem Kunststoff |
DE3530383A1 (de) * | 1985-08-24 | 1987-03-05 | Reifenhaeuser Masch | Formgebendes werkzeugaggregat fuer eine strangpressvorrichtung fuer thermoplastifizierten kunststoff |
DE3534770C1 (de) * | 1985-09-30 | 1986-11-13 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover | Verfahren und Anordnung zum materialverlustarmen Anfahren einer Mehrfachstrangpresse zum Herstellen von aus verschiedenen Kautschuk- oder Kunststoffmischungen bestehendenProfilstraengen,beispielsweise fuer Lauf- oder Seitenstreifen von Fahrzeugreifen |
DE3535470A1 (de) * | 1985-10-04 | 1987-04-09 | Battenfeld Extrusionstech | Verfahren und vorrichtung zum konstanthalten der wandstaerke beim extrudieren von blasfolien, rohren oder rohrfoermigen straengen aus kunststoff |
DE3536329A1 (de) * | 1985-10-11 | 1987-04-16 | Battenfeld Extrusionstech | Verfahren und vorrichtung zum konstanthalten der wandstaerke bei extrudieren von blasfolien, rohren oder rohrfoermigen straengen aus kunststoff |
FR2636210B1 (fr) * | 1988-09-13 | 1993-04-09 | Kaufler Sa | Dispositif pour produire en continu des morceaux de viande sensiblement parallelepipediques |
DK0418681T3 (da) * | 1989-09-16 | 1993-08-16 | Roehm Gmbh | Ekstruderingsadapter |
US5128077A (en) * | 1991-02-12 | 1992-07-07 | General Tire, Inc. | Method for producing multicomponent extrusions having controlled component contributions |
US5527499A (en) * | 1995-01-31 | 1996-06-18 | Bridgestone/Firestone, Inc. | Extrusion apparatus and method with pressure equalization |
DE19507598C2 (de) * | 1995-03-04 | 1997-02-20 | Uniroyal Englebert Gmbh | Mehrkomponentenextruder |
US5725814A (en) * | 1995-06-07 | 1998-03-10 | Harrel, Inc. | Extrusion of an article of varying content |
US5695789A (en) * | 1995-06-07 | 1997-12-09 | Harrel, Inc. | Apparatus for extrusion of an article of varying content |
NL1012032C2 (nl) * | 1999-03-05 | 2000-09-06 | Wavin Bv | Werkwijze voor het vervaardigen van een buis van biaxiaal georiënteerd thermoplastisch kunststofmateriaal. |
JP3834199B2 (ja) * | 2000-11-22 | 2006-10-18 | 住友ゴム工業株式会社 | ゴム成形方法およびゴム成形装置 |
US20060038310A1 (en) | 2004-07-29 | 2006-02-23 | Erik Lipson | Method and apparatus for forming extruded striped plastic products with variations in width of the stripes along the length of the products and for blow molding articles formed from such extruded parts |
DE602008005667D1 (de) * | 2007-05-31 | 2011-05-05 | Michelin Soc Tech | Vorrichtung und Methode zur Ummantelung eines Strangs |
DE102009004946B4 (de) * | 2008-10-22 | 2015-04-09 | Sikora Aktiengesellschaft | Verfahren und Vorrichtung zur Messung der Temperatur eines plastifizierten Kunststoffs am Ausgang eines Extruders |
DE102009048980A1 (de) * | 2009-10-09 | 2011-04-14 | Troester Gmbh & Co. Kg | Spritzkopf sowie eine mit einem solchen Spritzkopf ausgestattete Extrusionsvorrichtung |
US9227372B2 (en) * | 2011-12-19 | 2016-01-05 | The Goodyear Tire & Rubber Company | Conicity correction for rubber component extrusion |
CN104169072B (zh) * | 2011-12-29 | 2016-10-19 | 倍耐力轮胎股份公司 | 用于构造轮胎的工艺和设备 |
US9636860B2 (en) | 2012-05-31 | 2017-05-02 | Mohawk Industries, Inc. | Method of manufacturing bulked continuous filament |
US10695953B2 (en) | 2012-05-31 | 2020-06-30 | Aladdin Manufacturing Corporation | Methods for manufacturing bulked continuous carpet filament |
US9630353B2 (en) | 2012-05-31 | 2017-04-25 | Mohawk Industries, Inc. | Method of manufacturing bulked continuous filament |
US10538016B2 (en) | 2012-05-31 | 2020-01-21 | Aladdin Manufacturing Corporation | Methods for manufacturing bulked continuous carpet filament |
US8597553B1 (en) | 2012-05-31 | 2013-12-03 | Mohawk Industries, Inc. | Systems and methods for manufacturing bulked continuous filament |
US10487422B2 (en) | 2012-05-31 | 2019-11-26 | Aladdin Manufacturing Corporation | Methods for manufacturing bulked continuous filament from colored recycled pet |
US10532495B2 (en) | 2012-05-31 | 2020-01-14 | Aladdin Manufacturing Corporation | Methods for manufacturing bulked continuous filament from recycled PET |
US11045979B2 (en) | 2012-05-31 | 2021-06-29 | Aladdin Manufacturing Corporation | Methods for manufacturing bulked continuous filament from recycled PET |
DE102013109346A1 (de) * | 2013-08-29 | 2015-03-05 | Continental Reifen Deutschland Gmbh | Verfahren zur Herstellung von Vormaterial für Fahrzeugreifen |
JP6392638B2 (ja) * | 2014-11-14 | 2018-09-19 | 東洋ゴム工業株式会社 | ゴム押出成型装置及び方法 |
DE102014117068B4 (de) | 2014-11-21 | 2020-04-23 | KraussMaffei Extrusion GmbH | Mehrfach-Strangpresskopf sowie Laufprofil-Herstellvorrichtung zum Herstellen von Laufprofilen von Fahrzeugreifen |
BR112017025951B1 (pt) * | 2015-06-12 | 2022-01-18 | Pirelli Tyre S.P.A. | Método e aparelho para controlar a extrusão de um produto semiacabado |
US10751915B2 (en) | 2016-11-10 | 2020-08-25 | Aladdin Manufacturing Corporation | Polyethylene terephthalate coloring systems and methods |
CN110225808A (zh) | 2017-01-30 | 2019-09-10 | 美国阿拉丁制造公司 | 用于从彩色的回收pet制造膨化连续细丝的方法 |
JP6520967B2 (ja) * | 2017-02-16 | 2019-05-29 | 横浜ゴム株式会社 | ゴム押出装置およびゴム押出物の製造方法 |
EA201992067A1 (ru) | 2017-03-03 | 2020-03-27 | Аладдин Мэньюфэкчеринг Корпорейшн | Экструдеры полимеров со сдвоенным вакуумным устройством и связанные с ними способы |
MX2020002899A (es) | 2017-09-15 | 2020-07-22 | Aladdin Mfg Corp | Metodo y sistema para colorear tereftalato de polietileno para fabricar un filamento continuo suelto de alfombra. |
US11242622B2 (en) | 2018-07-20 | 2022-02-08 | Aladdin Manufacturing Corporation | Bulked continuous carpet filament manufacturing from polytrimethylene terephthalate |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125616A (en) * | 1964-03-17 | Process for the production of thermoplastic polymeric | ||
US2289933A (en) * | 1941-05-09 | 1942-07-14 | Mccreary Tire And Rubber Compa | Tire tread fabrication |
US2382177A (en) * | 1941-10-15 | 1945-08-14 | Goodrich Co B F | Apparatus for making composite strips |
US2897543A (en) * | 1958-02-24 | 1959-08-04 | Goodrich Co B F | Multi-part extruder head |
US3280427A (en) * | 1964-02-03 | 1966-10-25 | Cooper Tire & Rubber Co | Apparatus for extruding composite black and white rubber strips for white sidewall tires |
US3502752A (en) * | 1967-02-13 | 1970-03-24 | Gen Cable Corp | Control of the dimensions of multiple layers of extruded insulation |
DE2201631C3 (de) * | 1972-01-14 | 1979-05-03 | Paul Troester Maschinenfabrik, 3000 Hannover | Strangpreßkopf zum Herstellen von Flachprofilen aus zwei verschiedenartigen Mischungen |
FR2304952A1 (fr) * | 1975-03-20 | 1976-10-15 | Lesieur Cotelle | Procede et dispositif pour la regulation de l'epaisseur d'une feuille plastique extrudee |
US4087499A (en) * | 1975-08-07 | 1978-05-02 | The Goodyear Tire & Rubber Company | Method for controlling uniformity in tire tread stock |
US4088721A (en) * | 1976-09-24 | 1978-05-09 | The Goodyear Tire & Rubber Company | Method and apparatus for controlling the thickness of extruded stock |
US4137025A (en) * | 1977-03-07 | 1979-01-30 | Graves Kenneth E | Apparatus for measuring and controlling the wall thickness of plastic pipes |
US4095156A (en) * | 1977-03-21 | 1978-06-13 | Vladimir Alexeevich Borisov | Device for automatic dimension control of extruded blanks |
DE2723130A1 (de) * | 1977-05-23 | 1978-12-07 | Bellaplast Gmbh | Verfahren und vorrichtung zum kontinuierlichen steuern des extrudiervorganges in extrudieranlagen |
US4097566A (en) * | 1977-06-01 | 1978-06-27 | Nucleonics Data Systems | Extrusion line control system |
JPS5438363A (en) * | 1977-08-31 | 1979-03-22 | Toyoda Gosei Co Ltd | Apparatus for automatic regulation of outer diameter of extrusion molded product |
IT1123875B (it) * | 1979-10-17 | 1986-04-30 | Pirelli | Testa di estrusione piana |
US4428896A (en) * | 1982-08-30 | 1984-01-31 | The General Tire & Rubber Company | Method of producing an extrudate of controlled size and shape from a roller die |
-
1983
- 1983-04-27 DE DE3315184A patent/DE3315184C1/de not_active Expired
- 1983-07-06 IT IT21956/83A patent/IT1164304B/it active
- 1983-07-18 JP JP58129584A patent/JPS59199230A/ja active Pending
- 1983-07-26 SU SU833622783A patent/SU1175359A3/ru active
- 1983-07-28 BR BR8304039A patent/BR8304039A/pt unknown
- 1983-08-01 FR FR8312654A patent/FR2545034B1/fr not_active Expired
- 1983-08-22 GB GB08322513A patent/GB2141844B/en not_active Expired
- 1983-08-23 US US06/525,708 patent/US4515738A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPS59199230A (ja) | 1984-11-12 |
IT1164304B (it) | 1987-04-08 |
BR8304039A (pt) | 1985-01-22 |
GB2141844B (en) | 1986-04-30 |
GB8322513D0 (en) | 1983-09-21 |
SU1175359A3 (ru) | 1985-08-23 |
IT8321956A1 (it) | 1985-01-06 |
FR2545034A1 (fr) | 1984-11-02 |
GB2141844A (en) | 1985-01-03 |
IT8321956A0 (it) | 1983-07-06 |
DE3315184C1 (de) | 1984-06-28 |
US4515738A (en) | 1985-05-07 |
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