DE2655025C2 - Kontinuierliches Verfahren zur Herstellung von Kautschukbahnen mit einem Oberflächenmuster - Google Patents
Kontinuierliches Verfahren zur Herstellung von Kautschukbahnen mit einem OberflächenmusterInfo
- Publication number
- DE2655025C2 DE2655025C2 DE2655025A DE2655025A DE2655025C2 DE 2655025 C2 DE2655025 C2 DE 2655025C2 DE 2655025 A DE2655025 A DE 2655025A DE 2655025 A DE2655025 A DE 2655025A DE 2655025 C2 DE2655025 C2 DE 2655025C2
- Authority
- DE
- Germany
- Prior art keywords
- rubber
- mold
- vulcanized
- pattern
- radiation
- 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
- 229920001971 elastomer Polymers 0.000 title claims description 69
- 239000005060 rubber Substances 0.000 title claims description 69
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000010924 continuous production Methods 0.000 title claims description 5
- 239000004636 vulcanized rubber Substances 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 description 28
- 238000004073 vulcanization Methods 0.000 description 20
- 239000000463 material Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 15
- 239000000047 product Substances 0.000 description 9
- 230000005865 ionizing radiation Effects 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 description 2
- 239000006237 Intermediate SAF Substances 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000006236 Super Abrasion Furnace Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003339 best practice Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011346 highly viscous material Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- -1 promoters Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 229960002447 thiram Drugs 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/222—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length characterised by the shape of the surface
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
-
- 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
-
- 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
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29K2021/00—Use of unspecified rubbers as moulding material
-
- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0072—Roughness, e.g. anti-slip
-
- 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)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Tyre Moulding (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/641,150 US4122137A (en) | 1975-12-15 | 1975-12-15 | Radiation cure of rubber sheets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2655025A1 DE2655025A1 (de) | 1977-06-23 |
| DE2655025C2 true DE2655025C2 (de) | 1985-09-12 |
Family
ID=24571147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2655025A Expired DE2655025C2 (de) | 1975-12-15 | 1976-12-04 | Kontinuierliches Verfahren zur Herstellung von Kautschukbahnen mit einem Oberflächenmuster |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4122137A (OSRAM) |
| JP (1) | JPS604765B2 (OSRAM) |
| BE (1) | BE849199A (OSRAM) |
| CA (1) | CA1079220A (OSRAM) |
| DE (1) | DE2655025C2 (OSRAM) |
| FR (1) | FR2335336A1 (OSRAM) |
| GB (1) | GB1561453A (OSRAM) |
| IT (1) | IT1067033B (OSRAM) |
| LU (1) | LU76345A1 (OSRAM) |
| NL (1) | NL185905C (OSRAM) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2774739A1 (de) | 2013-03-05 | 2014-09-10 | ContiTech Elastomer-Beschichtungen GmbH | Verfahren und Vorrichtung zur Vulkanisation eines Artikels |
| DE102016217725A1 (de) | 2016-09-16 | 2018-03-22 | Contitech Antriebssysteme Gmbh | Elastisches Zugmittel und Verfahren zur Herstellung desselben |
| DE102017206844A1 (de) | 2017-04-24 | 2018-10-25 | Contitech Antriebssysteme Gmbh | Verfahren zur Herstellung eines flächigen Gewebeverbundmaterials sowie mit Gewebeverbundmaterial belegter Antriebsriemen. |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4851063A (en) * | 1969-07-02 | 1989-07-25 | Mildred Kelley Seiberling | Radiation cure of tire plies in a continuous operation |
| US4230649A (en) * | 1978-06-12 | 1980-10-28 | The Firestone Tire & Rubber Company | Apparatus and method for continuous tread production |
| US4221253A (en) * | 1979-04-20 | 1980-09-09 | Mildred Kelly Seibering | Radiation cure of tire elements |
| US4264661A (en) * | 1979-11-06 | 1981-04-28 | Raychem Corporation | Thermoplastic article and process for manufacture of same |
| US4395298A (en) * | 1980-11-10 | 1983-07-26 | Dayco Corporation | Method and apparatus for making toothed belts and belt made employing same |
| GB8307946D0 (en) * | 1983-03-23 | 1983-04-27 | Bates W & A Ltd | Elastomeric components |
| FR2557982B1 (fr) * | 1984-01-10 | 1986-05-09 | Henri Pierre | Cale speciale pour l'obtention d'un montage souple et de securite pour lentilles optiques solaires, de protection, et toutes lentilles d'instruments d'optique, ainsi que pour le " sauvetage " des verres meules trop petits |
| DE3528810C1 (de) * | 1985-08-10 | 1987-04-02 | Freudenberg Carl Fa | Verfahren zum Herstellen eines tiefgezogenen Formteiles aus teilkristallinem Kunststoff |
| JP2548953B2 (ja) * | 1987-09-26 | 1996-10-30 | 大日本印刷株式会社 | 耐擦傷性艶消表面を有するプラスチック成型品の製造方法 |
| US4904422A (en) * | 1988-02-04 | 1990-02-27 | University Of Maryland, College Park | Ozone and wear resistance in styrene-butadiene rubber |
| JPH0344028U (OSRAM) * | 1989-09-08 | 1991-04-24 | ||
| JPH045470A (ja) * | 1990-04-23 | 1992-01-09 | Nippondenso Co Ltd | 多機能型スタータ |
| US5378531A (en) * | 1993-07-09 | 1995-01-03 | Larson; Peter M. | Gamma radiation treated sheet material for use as orthopedic splints and casts and the like |
| DE19526695C2 (de) * | 1995-07-21 | 2000-05-25 | Continental Ag | Plattenförmige Vulkanette aus einer Kautschukmischung, Verfahren zu ihrer Herstellung und ihre Verwendung |
| US6361842B1 (en) | 1996-05-30 | 2002-03-26 | United States Brass Corporation | Reformed crosslinked polyethylene articles |
| US20040018263A1 (en) * | 2002-07-24 | 2004-01-29 | Rami Hashimshony | Apparatus useful for continuous forming of thermoplastic material and method for use thereof |
| JP2008194977A (ja) * | 2007-02-14 | 2008-08-28 | Hitachi Maxell Ltd | 成形体の製造方法及び製造装置 |
| FR2925388A1 (fr) * | 2007-12-21 | 2009-06-26 | Michelin Soc Tech | Dispositif et procede de preparation d'un profile d'un gel thermoplastique elastomere |
| JP5189024B2 (ja) * | 2009-04-09 | 2013-04-24 | クレハエラストマー株式会社 | 複合薄膜架橋ゴムシートおよびその製造方法 |
| WO2016064394A1 (en) * | 2014-10-23 | 2016-04-28 | Compagnie Generale Des Etablissements Michelin | System for continuous tire tread extrusion, molding, and curing |
| CN113667152A (zh) * | 2021-08-25 | 2021-11-19 | 中广核达胜加速器技术有限公司 | 子午线轮胎的制备方法 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1906402A (en) * | 1929-02-19 | 1933-05-02 | Goodrich Co B F | Method of vulcanizing rubber |
| US2109190A (en) * | 1934-08-29 | 1938-02-22 | Coffey Joseph Herbert | Method and apparatus for making rubber articles |
| US2345518A (en) * | 1941-01-24 | 1944-03-28 | Webster Rubber Company | Tire tread and method of making the same |
| US2446771A (en) * | 1946-12-31 | 1948-08-10 | Boston Woven Hose & Rubber Com | Method of imparting surface effects to thermoplastic sheets |
| BE511522A (OSRAM) * | 1951-06-21 | |||
| US2907365A (en) * | 1954-04-13 | 1959-10-06 | Us Rubber Co | Nonskid tire tread and method and means for making same |
| US2863812A (en) * | 1956-05-22 | 1958-12-09 | Du Pont | Irradiation process |
| US2933441A (en) * | 1957-10-14 | 1960-04-19 | Astra Inc | Process of making rubber articles |
| DE1778808A1 (de) * | 1968-06-07 | 1971-08-05 | Hermann Berstorff Maschb Gmbh | Verfahren zur Herstellung von Bahnen aus Gummi oder Kunststoffen und Einrichtung zur Durchfuehrung dieses Verfahrens |
| US3658620A (en) * | 1968-06-17 | 1972-04-25 | Scm Corp | Irradiation lamination process for air-inhibited polymers |
| US3933553A (en) * | 1973-01-05 | 1976-01-20 | Mildred Kelley Seiberling | Tires, etc |
| DE2032246A1 (de) * | 1970-06-30 | 1972-01-13 | Vakuum VuIk Holdings Ltd , Nassau, Bahamas (Großbritannien) | Verfahren zur fortlaufenden Herstel lung von Laufstreifen |
| US3725230A (en) * | 1971-03-29 | 1973-04-03 | Gen Cable Corp | Insulated electrical cables and method of making them |
| DD110404A3 (OSRAM) * | 1971-05-04 | 1974-12-20 | ||
| BE789295A (fr) * | 1971-09-27 | 1973-03-26 | Firestone Tire & Rubber Co | Vulcanisation partielle d'elastomeres synthetiques par irradiation |
| US3827846A (en) * | 1972-08-22 | 1974-08-06 | H Weiler | Apparatus for making cured tire tread strip |
| US3829271A (en) * | 1972-11-02 | 1974-08-13 | D Taylor | Apparatus for molding strip material |
| US3838142A (en) * | 1973-04-23 | 1974-09-24 | Gen Motors Corp | Procedure for correcting radial force variations in pneumatic tires |
| US3959053A (en) * | 1974-08-05 | 1976-05-25 | The Goodyear Tire & Rubber Company | Surface treatment of tires to reduce flash |
-
1975
- 1975-12-15 US US05/641,150 patent/US4122137A/en not_active Expired - Lifetime
-
1976
- 1976-12-04 DE DE2655025A patent/DE2655025C2/de not_active Expired
- 1976-12-08 LU LU76345A patent/LU76345A1/xx unknown
- 1976-12-08 NL NLAANVRAGE7613670,A patent/NL185905C/xx not_active IP Right Cessation
- 1976-12-08 BE BE173080A patent/BE849199A/xx not_active IP Right Cessation
- 1976-12-08 CA CA267,398A patent/CA1079220A/en not_active Expired
- 1976-12-08 FR FR7637009A patent/FR2335336A1/fr active Granted
- 1976-12-08 GB GB51299/76A patent/GB1561453A/en not_active Expired
- 1976-12-09 JP JP51147225A patent/JPS604765B2/ja not_active Expired
- 1976-12-14 IT IT30384/76A patent/IT1067033B/it active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2774739A1 (de) | 2013-03-05 | 2014-09-10 | ContiTech Elastomer-Beschichtungen GmbH | Verfahren und Vorrichtung zur Vulkanisation eines Artikels |
| DE102013102148A1 (de) | 2013-03-05 | 2014-09-11 | Contitech Elastomer-Beschichtungen Gmbh | Verfahren und Vorrichtung zur Vulkanisation eines mehrschichtigen Artikels |
| DE102016217725A1 (de) | 2016-09-16 | 2018-03-22 | Contitech Antriebssysteme Gmbh | Elastisches Zugmittel und Verfahren zur Herstellung desselben |
| WO2018050301A1 (de) | 2016-09-16 | 2018-03-22 | Contitech Antriebssysteme Gmbh | Elastisches zugmittel und verfahren zur herstellung desselben |
| DE102017206844A1 (de) | 2017-04-24 | 2018-10-25 | Contitech Antriebssysteme Gmbh | Verfahren zur Herstellung eines flächigen Gewebeverbundmaterials sowie mit Gewebeverbundmaterial belegter Antriebsriemen. |
| WO2018197060A1 (de) | 2017-04-24 | 2018-11-01 | Contitech Antriebssysteme Gmbh | Verfahren zur herstellung eines flächigen gewebeverbundmaterials sowie mit gewebeverbundmaterial belegter antriebsriemen |
| US11110674B2 (en) | 2017-04-24 | 2021-09-07 | Contitech Antriebssysteme Gmbh | Method for producing a composite fabric material and drive belt covered with composite fabric material |
Also Published As
| Publication number | Publication date |
|---|---|
| BE849199A (fr) | 1977-06-08 |
| CA1079220A (en) | 1980-06-10 |
| GB1561453A (en) | 1980-02-20 |
| NL185905B (nl) | 1990-03-16 |
| JPS5272778A (en) | 1977-06-17 |
| FR2335336B1 (OSRAM) | 1982-07-23 |
| DE2655025A1 (de) | 1977-06-23 |
| US4122137A (en) | 1978-10-24 |
| FR2335336A1 (fr) | 1977-07-15 |
| JPS604765B2 (ja) | 1985-02-06 |
| LU76345A1 (OSRAM) | 1978-07-10 |
| IT1067033B (it) | 1985-03-12 |
| NL185905C (nl) | 1990-08-16 |
| NL7613670A (nl) | 1977-06-17 |
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