DE2721473C2 - Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Produkten mit Zellstruktur aus wärmehärtbarem Harz - Google Patents
Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Produkten mit Zellstruktur aus wärmehärtbarem HarzInfo
- Publication number
- DE2721473C2 DE2721473C2 DE2721473A DE2721473A DE2721473C2 DE 2721473 C2 DE2721473 C2 DE 2721473C2 DE 2721473 A DE2721473 A DE 2721473A DE 2721473 A DE2721473 A DE 2721473A DE 2721473 C2 DE2721473 C2 DE 2721473C2
- Authority
- DE
- Germany
- Prior art keywords
- belt
- belts
- mixture
- shaping
- forming
- 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
- 229920005989 resin Polymers 0.000 title claims description 32
- 239000011347 resin Substances 0.000 title claims description 32
- 238000000034 method Methods 0.000 title claims description 30
- 230000008569 process Effects 0.000 title claims description 15
- 238000004519 manufacturing process Methods 0.000 title description 16
- 210000003850 cellular structure Anatomy 0.000 title description 2
- 229920001187 thermosetting polymer Polymers 0.000 title 1
- 239000000203 mixture Substances 0.000 claims description 50
- 238000007493 shaping process Methods 0.000 claims description 27
- 238000002156 mixing Methods 0.000 claims description 21
- 239000003054 catalyst Substances 0.000 claims description 12
- -1 polytetrafluoroethylene Polymers 0.000 claims description 9
- 239000004604 Blowing Agent Substances 0.000 claims description 8
- 239000005011 phenolic resin Substances 0.000 claims description 8
- 229920001568 phenolic resin Polymers 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 210000001520 comb Anatomy 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 229920003987 resole Polymers 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000010924 continuous production Methods 0.000 claims description 3
- 230000008034 disappearance Effects 0.000 claims 1
- 239000006260 foam Substances 0.000 description 49
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 23
- 239000000463 material Substances 0.000 description 15
- 239000007864 aqueous solution Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 238000005299 abrasion Methods 0.000 description 12
- 238000005187 foaming Methods 0.000 description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- 238000005452 bending Methods 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 9
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 9
- 238000004080 punching Methods 0.000 description 9
- 239000005060 rubber Substances 0.000 description 9
- 238000011144 upstream manufacturing Methods 0.000 description 9
- 230000035699 permeability Effects 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 210000004027 cell Anatomy 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 230000009257 reactivity Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000013543 active substance Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000006071 cream Substances 0.000 description 3
- 239000006261 foam material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 2
- 229920001213 Polysorbate 20 Polymers 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 2
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 241000283111 Macroderes minutus Species 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229920001214 Polysorbate 60 Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000000497 foam cell Anatomy 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 125000005456 glyceride group Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 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
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
-
- 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
- B29L2007/00—Flat articles, e.g. films or sheets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/02—Molding cellular aldehyde resins
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Molding Of Porous Articles (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7614330A FR2350945A1 (fr) | 1976-05-12 | 1976-05-12 | Perfectionnement aux procede et installation pour la fabrication continue de produits cellulaires en resine thermodurcissable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2721473A1 DE2721473A1 (de) | 1977-12-01 |
| DE2721473C2 true DE2721473C2 (de) | 1987-04-30 |
Family
ID=9173037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2721473A Expired DE2721473C2 (de) | 1976-05-12 | 1977-05-12 | Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Produkten mit Zellstruktur aus wärmehärtbarem Harz |
Country Status (19)
| Country | Link |
|---|---|
| US (2) | US4252515A (enExample) |
| JP (1) | JPS52137468A (enExample) |
| AT (1) | AT364766B (enExample) |
| BE (1) | BE854522A (enExample) |
| CA (1) | CA1101624A (enExample) |
| CH (1) | CH612620A5 (enExample) |
| DE (1) | DE2721473C2 (enExample) |
| DK (1) | DK150976C (enExample) |
| ES (1) | ES458696A1 (enExample) |
| FI (1) | FI65939C (enExample) |
| FR (1) | FR2350945A1 (enExample) |
| GB (1) | GB1555420A (enExample) |
| IE (1) | IE45414B1 (enExample) |
| IT (1) | IT1075543B (enExample) |
| LU (1) | LU77311A1 (enExample) |
| MX (1) | MX146710A (enExample) |
| NL (1) | NL7705202A (enExample) |
| NO (1) | NO148842C (enExample) |
| SE (1) | SE416117B (enExample) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4396563A (en) * | 1976-06-07 | 1983-08-02 | Gusmer Frederick E | Method of preparing closed cell phenol-aldehyde foam and the closed cell foam thus prepared |
| US4348164A (en) * | 1976-10-04 | 1982-09-07 | Toyo Rubber Chemical Industrial Corporation | Apparatus for continuous production of a slab of polyurethane foam |
| JPS5570208U (enExample) * | 1978-11-09 | 1980-05-14 | ||
| FR2497720A1 (fr) * | 1981-01-12 | 1982-07-16 | Lassus Gerard | Procede et installation pour la fabrication de panneaux en mousse expansee |
| US4478958A (en) * | 1981-07-10 | 1984-10-23 | Kopper Company, Inc. | Method for preparing phenolic foams using anhydrous aryl sulfonic acid catalysts |
| US4525492A (en) * | 1982-06-04 | 1985-06-25 | Fiberglas Canada Inc. | Modified phenolic foams |
| US4756860A (en) * | 1982-06-07 | 1988-07-12 | Rmax, Inc. | Apparatus for manufacturing insulation panels |
| US4539338A (en) * | 1982-07-09 | 1985-09-03 | Koppers Company, Inc. | Phenol formaldehyde resoles for making phenolic foam |
| AT387542B (de) * | 1983-02-11 | 1989-02-10 | Isovolta | Verfahren zum herstellen von phenol-aldehydharz- schaumstoffkoerpern |
| FR2544660B1 (fr) * | 1983-04-22 | 1986-06-20 | Saint Gobain Isover | Procede et dispositif pour la fabrication en continu de panneaux composites en mousse |
| JPH0367850A (ja) * | 1989-08-02 | 1991-03-22 | Nec Corp | 用紙けり出しローラー |
| US5786000A (en) * | 1996-08-28 | 1998-07-28 | Berner; Rolf E. | Continuous molding machine with pusher |
| JP2001198939A (ja) * | 2000-01-21 | 2001-07-24 | Jsp Corp | 発泡成形体の製造装置 |
| JP4387237B2 (ja) * | 2004-04-23 | 2009-12-16 | 株式会社トピア | プラスチック繊維成形体、プラスチック繊維成形体の製造方法、プラスチック繊維板の製造装置 |
| BRPI0607377A2 (pt) * | 2005-02-25 | 2010-03-23 | Nova Chem Inc | composiÇço de cimento de baixo peso, leito de estrada, artigo de construÇço painel compàsito, estrutura de concreto isolada, mÉtodo de fabricar um artigo de composiÇço de cimento de baixo peso, artigo de concreto de baixo peso e unidade estrutural de baixo peso |
| US8752348B2 (en) * | 2005-02-25 | 2014-06-17 | Syntheon Inc. | Composite pre-formed construction articles |
| AU2006216558B2 (en) | 2005-02-25 | 2010-05-13 | Nova Chemicals, Inc. | Composite pre-formed building panels, a building and a framing stud |
| DE102005010999A1 (de) * | 2005-03-10 | 2006-09-14 | Bayer Materialscience Ag | Verfahren und Anlage zur kontinuierlichen Herstellung von Schaumstoffplatten |
| BRPI0609690A2 (pt) | 2005-03-22 | 2011-10-18 | Nova Chem Inc | composição de concreto de baixo peso, leito de estrada, artigo de construção pré-moldado e/ou pré-tensionado, método de produção de um artigo de composição de concreto de baixo peso otimizado, e, artigo de concreto de baixo peso |
| US20070013099A1 (en) * | 2005-07-15 | 2007-01-18 | Epoch Composite Products, Inc. | Method And Apparatus For Emobssing Manufactured Deck Boards |
| US7677009B2 (en) * | 2007-02-02 | 2010-03-16 | Nova Chemicals Inc. | Roof truss system |
| US20090078161A1 (en) * | 2007-09-20 | 2009-03-26 | Nova Chemicals Inc. | Methods of minimizing concrete cracking and shrinkage |
| US8048219B2 (en) * | 2007-09-20 | 2011-11-01 | Nova Chemicals Inc. | Method of placing concrete |
| CN105014852B (zh) * | 2015-06-18 | 2017-06-27 | 合肥合锻智能制造股份有限公司 | 一种自移卧式翻转液压机及其使用方法 |
| JP6166829B2 (ja) * | 2015-10-13 | 2017-07-19 | 積水化学工業株式会社 | フェノール樹脂発泡板 |
| JP6159468B1 (ja) * | 2016-12-20 | 2017-07-05 | 積水化学工業株式会社 | フェノール樹脂発泡体およびその製造方法 |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA384799A (en) * | 1939-10-24 | Arthur Murphy Edward | Spongy rubber goods production | |
| US2549864A (en) * | 1948-06-12 | 1951-04-24 | Ohio Commw Eng Co | Continuous process for making sponge rubber |
| US2866730A (en) * | 1955-05-11 | 1958-12-30 | Haskelite Mfg Corp | Laminated panel and process for producing same |
| US2929793A (en) * | 1957-07-12 | 1960-03-22 | Joseph J Hirsh | Method of making closed cell polyvinyl chloride foam |
| US3147164A (en) * | 1959-04-06 | 1964-09-01 | Caradco Inc | Method of making shaped laminated resinous products |
| US3215581A (en) * | 1963-03-04 | 1965-11-02 | Air Prod & Chem | Foaming apparatus |
| GB1016719A (en) * | 1963-07-25 | 1966-01-12 | Ici Ltd | Manufacture of laminated articles having a foam core |
| GB1131890A (en) | 1965-10-15 | 1968-10-30 | Hercules Inc | Improvements in and relating to machine and process for continuous manufacture of foamed products of polymeric thermoplastic composition |
| US3487143A (en) | 1966-11-30 | 1969-12-30 | Goodrich Co B F | Apparatus and method for the continuous casting of polyurethane flat belting |
| DE1959904U (de) | 1967-02-11 | 1967-05-11 | Lorenz Polygon Ausbau G M B H | Staehlerner streckenausbau in tuerstockform. |
| FR1599874A (enExample) * | 1968-11-29 | 1970-07-20 | ||
| BE728672A (enExample) | 1969-02-20 | 1969-08-01 | ||
| DE2037930A1 (de) | 1969-07-31 | 1971-02-18 | Sumitomo Bakelite Co | Verfahren zum kontinuierlichen Her stellen eines Phenolschaumstoffes |
| SE338866B (enExample) * | 1969-11-28 | 1971-09-20 | Electrolux Ab | |
| ES399534A1 (es) * | 1971-03-02 | 1975-07-01 | Dynamit Nobel Ag | Un procedimiento para la fabricacion continua de esponja deresina fenolica en bandas sin fin. |
| FR2147766B1 (enExample) | 1971-04-15 | 1974-03-08 | Saint Gobain Pont A Mousson | |
| US3878278A (en) * | 1971-10-21 | 1975-04-15 | Charles H Miller | Lightweight reinforced structural material |
| ZA721386B (en) * | 1971-12-02 | 1972-11-29 | Dynamit Nobel Ag | Process and device for the continous production of phenolic-resin foam in endless runs |
| US3835208A (en) * | 1972-06-09 | 1974-09-10 | Exxon Research Engineering Co | Method for producing an integral skin phenolic foam |
| GB1460792A (en) | 1973-01-18 | 1977-01-06 | Mitsubishi Rayon Co | Process for continuous manufacture ofu'ethyl methacrylate polymer |
| US3821337A (en) * | 1973-05-07 | 1974-06-28 | Exxon Research Engineering Co | Process for controlled curing of foams |
| GB1463063A (en) * | 1973-08-06 | 1977-02-02 | Ici Ltd | Process for producing moulded expanded urea-formaldehyde products |
| JPS5179156A (ja) * | 1974-12-30 | 1976-07-09 | Kansai Paint Co Ltd | Kyujogoseijushifunmatsuoseizosuru hoho |
-
1976
- 1976-05-12 FR FR7614330A patent/FR2350945A1/fr active Granted
-
1977
- 1977-05-03 GB GB18502/77A patent/GB1555420A/en not_active Expired
- 1977-05-05 IE IE913/77A patent/IE45414B1/en unknown
- 1977-05-09 IT IT23338/77A patent/IT1075543B/it active
- 1977-05-10 FI FI771475A patent/FI65939C/fi not_active IP Right Cessation
- 1977-05-10 SE SE7705470A patent/SE416117B/xx not_active IP Right Cessation
- 1977-05-10 CA CA278,017A patent/CA1101624A/en not_active Expired
- 1977-05-11 NL NL7705202A patent/NL7705202A/xx not_active Application Discontinuation
- 1977-05-11 LU LU77311A patent/LU77311A1/xx unknown
- 1977-05-11 ES ES458696A patent/ES458696A1/es not_active Expired
- 1977-05-11 DK DK206277A patent/DK150976C/da active
- 1977-05-11 CH CH589577A patent/CH612620A5/xx not_active IP Right Cessation
- 1977-05-11 NO NO771656A patent/NO148842C/no unknown
- 1977-05-11 BE BE177493A patent/BE854522A/xx unknown
- 1977-05-12 MX MX169115A patent/MX146710A/es unknown
- 1977-05-12 AT AT0343077A patent/AT364766B/de not_active IP Right Cessation
- 1977-05-12 JP JP5379477A patent/JPS52137468A/ja active Granted
- 1977-05-12 DE DE2721473A patent/DE2721473C2/de not_active Expired
-
1978
- 1978-09-22 US US05/945,066 patent/US4252515A/en not_active Expired - Lifetime
-
1980
- 1980-03-13 US US06/130,003 patent/US4332754A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| SE7705470L (sv) | 1977-11-13 |
| IE45414L (en) | 1977-11-12 |
| DK206277A (da) | 1977-11-13 |
| AT364766B (de) | 1981-11-10 |
| GB1555420A (en) | 1979-11-07 |
| DK150976B (da) | 1987-10-05 |
| CA1101624A (en) | 1981-05-26 |
| DE2721473A1 (de) | 1977-12-01 |
| JPS52137468A (en) | 1977-11-16 |
| US4252515A (en) | 1981-02-24 |
| DK150976C (da) | 1988-02-15 |
| FR2350945B1 (enExample) | 1979-10-05 |
| IT1075543B (it) | 1985-04-22 |
| NO771656L (no) | 1977-11-15 |
| ES458696A1 (es) | 1978-03-01 |
| SE416117B (sv) | 1980-12-01 |
| US4332754A (en) | 1982-06-01 |
| NO148842B (no) | 1983-09-19 |
| CH612620A5 (enExample) | 1979-08-15 |
| MX146710A (es) | 1982-08-03 |
| LU77311A1 (enExample) | 1977-12-13 |
| IE45414B1 (en) | 1982-08-25 |
| FR2350945A1 (fr) | 1977-12-09 |
| FI65939C (fi) | 1984-08-10 |
| ATA343077A (de) | 1981-04-15 |
| FI65939B (fi) | 1984-04-30 |
| BE854522A (fr) | 1977-11-14 |
| FI771475A7 (enExample) | 1977-11-13 |
| NL7705202A (nl) | 1977-11-15 |
| NO148842C (no) | 1983-12-28 |
| JPS6117252B2 (enExample) | 1986-05-07 |
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