CA1142319A - Methode et installation de traitement de plastiques et de polymeres - Google Patents
Methode et installation de traitement de plastiques et de polymeresInfo
- Publication number
- CA1142319A CA1142319A CA000340883A CA340883A CA1142319A CA 1142319 A CA1142319 A CA 1142319A CA 000340883 A CA000340883 A CA 000340883A CA 340883 A CA340883 A CA 340883A CA 1142319 A CA1142319 A CA 1142319A
- Authority
- CA
- Canada
- Prior art keywords
- channel
- processing
- passage
- liquid material
- providing
- 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
- 239000000463 material Substances 0.000 title claims abstract description 130
- 238000012545 processing Methods 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000004033 plastic Substances 0.000 title claims abstract description 26
- 229920003023 plastic Polymers 0.000 title claims abstract description 26
- 230000008569 process Effects 0.000 title claims abstract description 21
- 239000011236 particulate material Substances 0.000 claims abstract description 57
- 230000000452 restraining effect Effects 0.000 claims abstract description 54
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 230000000295 complement effect Effects 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 239000011344 liquid material Substances 0.000 claims description 81
- 230000000903 blocking effect Effects 0.000 claims description 25
- 238000002156 mixing Methods 0.000 claims description 23
- 238000007790 scraping Methods 0.000 claims description 10
- 230000006872 improvement Effects 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 abstract description 14
- 230000008018 melting Effects 0.000 abstract description 14
- 239000000155 melt Substances 0.000 description 11
- 229920000642 polymer Polymers 0.000 description 8
- 239000007787 solid Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000837 restrainer Substances 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- 239000011800 void material Substances 0.000 description 4
- -1 polyethylenes Polymers 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 235000012571 Ficus glomerata Nutrition 0.000 description 1
- 240000000365 Ficus racemosa Species 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 241001302210 Sida <water flea> Species 0.000 description 1
- 235000015125 Sterculia urens Nutrition 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
- B30B3/02—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with a fixed member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/022—Melting the material to be 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
- B29C48/03—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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/465—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using rollers
-
- 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
- B29C2948/92504—Controlled parameter
- B29C2948/92514—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
- B29C2948/92504—Controlled parameter
- B29C2948/92523—Force; Tension
-
- 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
- B29C2948/92542—Energy, power, electric current or voltage
-
- 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
- B29C2948/9259—Angular 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
- B29C2948/9258—Velocity
- B29C2948/926—Flow or feed rate
-
- 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
- B29C2948/92695—Viscosity; Melt flow index [MFI]; Molecular 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
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/92809—Particular value claimed
-
- 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
- B29C2948/92923—Calibration, after-treatment or cooling zone
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Accessories For Mixers (AREA)
- Rotary Pumps (AREA)
- Nozzles (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US97133278A | 1978-12-20 | 1978-12-20 | |
US971,332 | 1978-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1142319A true CA1142319A (fr) | 1983-03-08 |
Family
ID=25518237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000340883A Expired CA1142319A (fr) | 1978-12-20 | 1979-11-29 | Methode et installation de traitement de plastiques et de polymeres |
Country Status (19)
Country | Link |
---|---|
JP (1) | JPS5590311A (fr) |
KR (1) | KR830002007B1 (fr) |
AR (1) | AR224884A1 (fr) |
AU (1) | AU535062B2 (fr) |
BE (1) | BE880737A (fr) |
BR (1) | BR7908503A (fr) |
CA (1) | CA1142319A (fr) |
DD (1) | DD148029A5 (fr) |
DE (1) | DE2951228A1 (fr) |
ES (1) | ES8100143A1 (fr) |
FR (1) | FR2444548A1 (fr) |
GB (1) | GB2041284B (fr) |
IL (1) | IL58989A (fr) |
IN (1) | IN153502B (fr) |
IT (1) | IT1127302B (fr) |
NL (1) | NL7909201A (fr) |
PT (1) | PT70613A (fr) |
SE (1) | SE7910420L (fr) |
YU (1) | YU309379A (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4480923A (en) * | 1983-09-14 | 1984-11-06 | Usm Corporation | Rotary processors and seals |
US4529320A (en) * | 1983-09-14 | 1985-07-16 | Usm Corporation | Rotary processors and method for devolatilizing materials |
US4529478A (en) * | 1983-09-14 | 1985-07-16 | Usm Corporation | Rotary processors and vacuum systems |
AT397490B (de) * | 1987-12-15 | 1994-04-25 | Leinweber Anstalt Ing Joh | Vorrichtung zum pressen von gekrümmten bremsbelägen |
EP0730825A1 (fr) * | 1995-03-09 | 1996-09-11 | MAZZONI LB FOOD S.r.l. | Appareil de fluidisation de mélange de particules solides dispersées dans une phase lipidique continue en particulier chocolat ou dérivés |
EP0730826A1 (fr) * | 1995-03-09 | 1996-09-11 | MAZZONI LB FOOD S.r.l. | Procédé et appareil de production de mélange de particules solides dispersées dans une phase lipidique continue, en particulier chocolat ou dérivés, utilisant l'incorporation de balles de gaz micronisées |
DE29713574U1 (de) * | 1997-07-30 | 1997-12-18 | Kientsch, Bernd, 75433 Maulbronn | Vorrichtung zum Extrudieren von plastischen Massen für den Lebensmittel- und Pharmabereich, insbesondere für Brotteige |
TW426545B (en) * | 1997-12-25 | 2001-03-21 | Nippon Catalytic Chem Ind | Silver catalyst for production of ethylene oxide, method for production thereof, and method for production of ethylene oxide |
DE10330223A1 (de) * | 2003-07-04 | 2005-01-20 | Coperion Werner & Pfleiderer Gmbh & Co.Kg | Verfahren und Vorrichtung zum Plastifizieren thermoplastischer Kunststoffe |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3153686A (en) * | 1961-01-03 | 1964-10-20 | Owens Illinois Glass Co | Elastic melt extrusion method and apparatus |
JPS4421514Y1 (fr) * | 1965-09-16 | 1969-09-11 | ||
US3790328A (en) * | 1972-04-10 | 1974-02-05 | B Maxwell | Apparatus for feeding elastic melt extruders |
CA1111225A (fr) * | 1977-05-11 | 1981-10-27 | Zehev Tadmor | Methode et appareil pour le traitement de polymeres |
-
1979
- 1979-11-29 CA CA000340883A patent/CA1142319A/fr not_active Expired
- 1979-12-14 IN IN896/DEL/79A patent/IN153502B/en unknown
- 1979-12-18 SE SE7910420A patent/SE7910420L/xx not_active Application Discontinuation
- 1979-12-18 IL IL58989A patent/IL58989A/xx not_active IP Right Cessation
- 1979-12-18 GB GB7943598A patent/GB2041284B/en not_active Expired
- 1979-12-18 YU YU03093/79A patent/YU309379A/xx unknown
- 1979-12-19 DE DE19792951228 patent/DE2951228A1/de active Granted
- 1979-12-19 ES ES487540A patent/ES8100143A1/es not_active Expired
- 1979-12-19 AR AR279370A patent/AR224884A1/es active
- 1979-12-19 PT PT70613A patent/PT70613A/pt unknown
- 1979-12-19 KR KR1019790004576A patent/KR830002007B1/ko active
- 1979-12-19 BE BE0/198650A patent/BE880737A/fr not_active IP Right Cessation
- 1979-12-19 FR FR7931173A patent/FR2444548A1/fr active Granted
- 1979-12-20 JP JP16627779A patent/JPS5590311A/ja active Pending
- 1979-12-20 BR BR7908503A patent/BR7908503A/pt unknown
- 1979-12-20 NL NL7909201A patent/NL7909201A/nl not_active Application Discontinuation
- 1979-12-20 AU AU54067/79A patent/AU535062B2/en not_active Ceased
- 1979-12-20 DD DD79217951A patent/DD148029A5/de unknown
- 1979-12-20 IT IT28234/79A patent/IT1127302B/it active
Also Published As
Publication number | Publication date |
---|---|
NL7909201A (nl) | 1980-06-24 |
FR2444548A1 (fr) | 1980-07-18 |
SE7910420L (sv) | 1980-06-21 |
DD148029A5 (de) | 1981-05-06 |
IL58989A (en) | 1982-11-30 |
AU535062B2 (en) | 1984-03-01 |
DE2951228C2 (fr) | 1987-12-10 |
AU5406779A (en) | 1980-07-10 |
KR830002007B1 (ko) | 1983-10-06 |
AR224884A1 (es) | 1982-01-29 |
BE880737A (fr) | 1980-04-16 |
IT7928234A0 (it) | 1979-12-20 |
BR7908503A (pt) | 1980-09-09 |
JPS5590311A (en) | 1980-07-08 |
DE2951228A1 (de) | 1980-07-03 |
GB2041284A (en) | 1980-09-10 |
FR2444548B3 (fr) | 1981-10-23 |
YU309379A (en) | 1983-01-21 |
IN153502B (fr) | 1984-07-21 |
PT70613A (en) | 1980-01-01 |
ES487540A0 (es) | 1980-11-01 |
GB2041284B (en) | 1983-04-13 |
KR830001028A (ko) | 1983-04-29 |
IT1127302B (it) | 1986-05-21 |
ES8100143A1 (es) | 1980-11-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |