SE405086B - Anordning for framstellning av dubbelveggiga plastror, vilkas yttervegg er forsedd med korrugeringar och vilkas innervegg er slet - Google Patents

Anordning for framstellning av dubbelveggiga plastror, vilkas yttervegg er forsedd med korrugeringar och vilkas innervegg er slet

Info

Publication number
SE405086B
SE405086B SE7407555A SE7407555A SE405086B SE 405086 B SE405086 B SE 405086B SE 7407555 A SE7407555 A SE 7407555A SE 7407555 A SE7407555 A SE 7407555A SE 405086 B SE405086 B SE 405086B
Authority
SE
Sweden
Prior art keywords
wall
corrugations
manufacture
double
plasters
Prior art date
Application number
SE7407555A
Other languages
English (en)
Other versions
SE7407555L (sv
Inventor
W Hegler
R P Hegler
Original Assignee
Hegler Wilhelm
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 Hegler Wilhelm filed Critical Hegler Wilhelm
Publication of SE7407555L publication Critical patent/SE7407555L/xx
Publication of SE405086B publication Critical patent/SE405086B/sv

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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
    • B29C63/341—Lining or sheathing of internal surfaces using tubular layers or sheathings pressed against the wall by mechanical means
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
    • B29C48/0015—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die
    • B29C48/0016—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die using a plurality of extrusion dies
    • 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
    • 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
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C48/30—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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
    • B29C48/3366—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die using a die with concentric parts, e.g. rings, cylinders
    • 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
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • 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
    • B29C48/901—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 of hollow bodies
    • B29C48/902—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 of hollow bodies internally
    • 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
    • B29C48/908—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 characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
    • B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/22—Corrugating
    • B29C53/30—Corrugating of tubes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum
    • 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
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B29C48/913—Cooling of hollow articles of tubular films externally
    • 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
    • B29L2016/00—Articles with corrugations or pleats
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/18—Pleated or corrugated hoses
    • B29L2023/186—Pleated or corrugated hoses having a smooth internal wall
    • 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
    • B29L2024/00—Articles with hollow walls
    • B29L2024/003—Articles with hollow walls comprising corrugated cores
    • 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
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
    • B29L2031/601—Multi-tubular articles, i.e. composed of a plurality of tubes
SE7407555A 1974-03-22 1974-06-07 Anordning for framstellning av dubbelveggiga plastror, vilkas yttervegg er forsedd med korrugeringar och vilkas innervegg er slet SE405086B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2413879A DE2413879C3 (de) 1974-03-22 1974-03-22 Vorrichtung zur Herstellung eines doppelwandigen Kunststoffrohrs aus einem gewellten Außenrohr und einem glatten Innenrohr

Publications (2)

Publication Number Publication Date
SE7407555L SE7407555L (sv) 1975-09-23
SE405086B true SE405086B (sv) 1978-11-20

Family

ID=5910879

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7407555A SE405086B (sv) 1974-03-22 1974-06-07 Anordning for framstellning av dubbelveggiga plastror, vilkas yttervegg er forsedd med korrugeringar och vilkas innervegg er slet

Country Status (17)

Country Link
US (1) US3976414A (sv)
JP (1) JPS50133262A (sv)
AT (1) AT345544B (sv)
CA (1) CA1027316A (sv)
CS (1) CS188205B2 (sv)
DD (1) DD119549A5 (sv)
DE (1) DE2413879C3 (sv)
DK (1) DK142938C (sv)
FR (2) FR70398E (sv)
GB (1) GB1432886A (sv)
HU (1) HU175372B (sv)
IN (1) IN142366B (sv)
NL (1) NL7409522A (sv)
NO (1) NO142613C (sv)
SE (1) SE405086B (sv)
SU (1) SU656486A4 (sv)
TR (1) TR18042A (sv)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2637995C2 (de) * 1976-08-24 1983-05-26 Hegler, Wilhelm, 8730 Bad Kissingen Verfahren zur Herstellung von doppelwandigen Kunststoffrohren mit einer ringförmig gewellten Außenwand und einer glatten Innenwand
CA1083766A (en) * 1977-02-07 1980-08-19 Gerd P.H. Lupke Apparatus for producing thermoplastic tubing
DE2933304A1 (de) * 1979-08-17 1981-04-02 Hegler, Wilhelm, 8730 Bad Kissingen Bewaesserungsschlauch und verfahren und vorrichtung zu seiner herstellung
DE3027045A1 (de) * 1980-07-17 1982-02-11 Hegler, Wilhelm, 8730 Bad Kissingen Flach-hohlkoerper, insbesondere lueftungs- und drainage- bzw. absorber-platte
US4305703A (en) * 1980-09-12 1981-12-15 Lupke Manfred Arno Alfred Composite die assembly for use in the production of thermoplastic tubing
CA1172813A (en) * 1982-06-16 1984-08-21 Lupke, Manfred A. A. Apparatus for producing multi-walled thermoplastic tubing
CA1187258A (en) * 1982-12-02 1985-05-21 Lupke, Manfred A. A. Method and apparatus for forming a double walled thermoplastic tube with integral bells
CA1194663A (en) * 1983-05-27 1985-10-08 Lupke, Manfred A. A. Calibrator for use in the manufacture of double walled thermoplastic pipe
SE449456B (sv) * 1983-11-15 1987-05-04 Uponor Ab Forfarande och anordning for framstellning av ror varvid formbacksdelarna er delade i formstreckans lengsriktning
CA1226710A (en) * 1986-06-04 1987-09-15 Lupke, Manfred A. A. Apparatus for producing double-walled corrugated pipes
JPS634931A (ja) * 1986-06-20 1988-01-09 フ−バ−ト、エム、ドロスバツハ 二重壁管の製造方法とその装置
AU643618B2 (en) * 1987-10-15 1993-11-18 Impact International Pty Ltd An improved method of making a laminated tubular body
US4808098A (en) * 1988-03-16 1989-02-28 Harry Chan Pipe extrusion die with a cooled and vacuumed additional mandrel
DE9001467U1 (sv) * 1990-02-09 1990-04-19 Unicor Gmbh Rahn Plastmaschinen, 8728 Hassfurt, De
DE4111228A1 (de) * 1991-04-08 1992-10-15 Wilhelm Hegler Vorrichtung zur herstellung von kunststoff-rohren
GB9118970D0 (en) * 1991-08-30 1991-10-23 B & H Leicester Ltd Tubular members and their manufacture
DE4210482A1 (de) * 1992-03-31 1993-10-07 Wilhelm Hegler Verfahren und Vorrichtung zur fortlaufenden Herstellung eines Verbundrohres mit Rohr-Muffe
GB9212684D0 (en) * 1992-06-15 1992-07-29 Lupke Manfred Arno Alfred A method and apparatus for forming profiled tubes
CA2072663C (en) * 1992-06-29 1999-11-16 Manfred A. A. Lupke Method and apparatus for forming a double walled thermoplastic tube with integral bells
US5531583A (en) * 1993-04-15 1996-07-02 Cullom Machine Tool & Die, Inc. Vacuum mold blocks with cooling for corrugated tubing
DE69328879T2 (de) * 1993-06-30 2000-11-09 Manfred Arno Alfred Lupke Verfahren und vorrichtung zur herstellung eines verbundrohres mit rohr-muffen
FR2745429B1 (fr) * 1996-02-28 1998-04-17 Sofanou Sa Gaine annelee fendue
US6641884B1 (en) * 2000-08-09 2003-11-04 Teleflex Fluid Systems Corrugated hose assembly
US20070141284A1 (en) * 2005-12-19 2007-06-21 Saint-Gobain Performance Plastics Corporation Smooth bore flexible fluid conduit
DE102006018373A1 (de) * 2006-04-20 2007-10-25 Drossbach Gmbh & Co Kg Vorrichtung zum Formen der Innenoberfläche eines Rohres aus thermoplastischem Material
DE102007050923A1 (de) * 2007-10-23 2009-05-07 Unicor Gmbh Verfahren und Vorrichtung zur Herstellung eines doppelwandigen thermoplastischen Wellrohres mit einer Rohrmuffe
CA2668518C (en) * 2009-06-11 2012-09-25 Manfred A. A. Lupke Die tooling for extruding tubular product
US10589500B2 (en) * 2015-02-27 2020-03-17 Corning Incorporated Customized and selective decoration of internal tube-like surfaces using pre-printed films with splinter resistant property
IT201600092917A1 (it) * 2016-09-15 2018-03-15 Sacmi Imola Sc Organo di trasferimento di corpi di materiale polimerico in caduta per linee di stampaggio a compressione.
CN109812629A (zh) * 2019-03-22 2019-05-28 贵州枫叶管业有限公司 高密度聚乙烯双壁波纹管的改良装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL124750C (sv) * 1959-02-21 1900-01-01
FR1413172A (fr) * 1959-02-21 1965-10-08 Fraenk Isolierrohr & Metall Dispositif de fabrication de tuyaux en matière synthétique à parois à ondulations transversales
US3201827A (en) * 1963-04-08 1965-08-24 Anaconda Wire & Cable Co Tube-stretching mandrel
GB1132711A (en) * 1965-06-10 1968-11-06 Tmm Research Ltd Improvements in spindle brakes in textile spinning and twisting machines
AT325299B (de) * 1967-02-27 1975-10-10 Hegler Wilhelm Vorrichtung zur herstellung von rohren aus thermoplastischem kunststoff
FR1592180A (sv) * 1968-10-22 1970-05-11
US3743457A (en) * 1971-07-13 1973-07-03 Acme Hamilton Mfg Corp Stock flow control means for extruders and the like
US3743456A (en) * 1971-08-20 1973-07-03 Acme Hamilton Mfg Corp Adjustable die heads for extruders and the like

Also Published As

Publication number Publication date
ATA440774A (de) 1978-01-15
SU656486A4 (ru) 1979-04-05
DK96675A (sv) 1975-09-23
NO742288L (sv) 1975-09-23
JPS50133262A (sv) 1975-10-22
FR2264649B1 (sv) 1977-11-04
NL7409522A (nl) 1975-09-24
DK142938C (da) 1981-10-05
FR2264649A1 (sv) 1975-10-17
US3976414A (en) 1976-08-24
AT345544B (de) 1978-09-25
NO142613C (no) 1980-09-17
NO142613B (no) 1980-06-09
FR70398E (fr) 1959-04-06
CA1027316A (en) 1978-03-07
DE2413879B2 (de) 1977-09-01
GB1432886A (en) 1976-04-22
IN142366B (sv) 1977-06-25
DE2413879C3 (de) 1978-04-27
SE7407555L (sv) 1975-09-23
TR18042A (tr) 1978-08-12
DK142938B (da) 1981-03-02
DD119549A5 (sv) 1976-05-05
CS188205B2 (en) 1979-02-28
DE2413879A1 (de) 1975-10-02
HU175372B (hu) 1980-07-28

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