IT7921573A0 - Procedimento e dispositivo perl'ottimizzazione della capacita'produttiva di un impianto di soffiaggio ed estrusione dimateriale in foglio per mezzo di un calcolatore di processo. - Google Patents
Procedimento e dispositivo perl'ottimizzazione della capacita'produttiva di un impianto di soffiaggio ed estrusione dimateriale in foglio per mezzo di un calcolatore di processo.Info
- Publication number
- IT7921573A0 IT7921573A0 IT7921573A IT2157379A IT7921573A0 IT 7921573 A0 IT7921573 A0 IT 7921573A0 IT 7921573 A IT7921573 A IT 7921573A IT 2157379 A IT2157379 A IT 2157379A IT 7921573 A0 IT7921573 A0 IT 7921573A0
- Authority
- IT
- Italy
- Prior art keywords
- blowing
- optimization
- extrusion
- plant
- procedure
- Prior art date
Links
- 238000000034 method Methods 0.000 title 2
- 238000007664 blowing Methods 0.000 title 1
- 238000001125 extrusion Methods 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000005457 optimization Methods 0.000 title 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
- 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
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- 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
- B29C2948/92114—Dimensions
-
- 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
- B29C2948/92114—Dimensions
- B29C2948/92123—Diameter or circumference
-
- 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
- B29C2948/92114—Dimensions
- B29C2948/92152—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
- B29C2948/92009—Measured parameter
- B29C2948/92209—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
- B29C2948/92323—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
- B29C2948/92428—Calibration, after-treatment, or cooling 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
- B29C2948/92504—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
- B29C2948/9258—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
- B29C2948/92609—Dimensions
- B29C2948/92628—Width or height
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782816583 DE2816583A1 (de) | 1978-04-17 | 1978-04-17 | Verfahren und vorrichtung zur optimierung der ausstossleistung einer blasfolienextruderanlage mittels eines prozessrechners |
Publications (2)
Publication Number | Publication Date |
---|---|
IT7921573A0 true IT7921573A0 (it) | 1979-04-04 |
IT1163670B IT1163670B (it) | 1987-04-08 |
Family
ID=6037170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT21573/79A IT1163670B (it) | 1978-04-17 | 1979-04-04 | Procedimento e dispositivo per l'ottimizzazione della capacita' produttiva di un impianto di soffiaggio ed estrusione di materiale in foglio per mezzo di un calcolatore di processo |
Country Status (7)
Country | Link |
---|---|
US (1) | US4246212A (it) |
JP (1) | JPS5830127B2 (it) |
BR (1) | BR7902305A (it) |
CH (1) | CH641401A5 (it) |
DE (1) | DE2816583A1 (it) |
GB (1) | GB2019045B (it) |
IT (1) | IT1163670B (it) |
Families Citing this family (60)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2947293C2 (de) | 1979-11-23 | 1983-09-15 | Windmöller & Hölscher, 4540 Lengerich | Verfahren zur Regelung der Foliendicke an einer Blasfolien-Extruderanlage |
DE2950003C2 (de) * | 1979-12-12 | 1983-08-11 | Windmöller & Hölscher, 4540 Lengerich | Verfahren zur Regelung der Foliendicke an einer Blasfolien-Extruderanlage |
DE3002903C2 (de) * | 1980-01-28 | 1986-12-04 | Windmöller & Hölscher, 4540 Lengerich | Verfahren zur Regelung der Foliendicke an einer Blasfolienextruderanlage |
DE3014989C2 (de) * | 1980-04-18 | 1991-01-24 | Windmöller & Hölscher, 4540 Lengerich | Verfahren zur Steuerung der Foliendicke an einer Blasfolienextruderanlage |
US4415681A (en) * | 1980-10-23 | 1983-11-15 | Ford Motor Company | Stabilized crosslinked dispersion |
US4355966A (en) * | 1981-05-04 | 1982-10-26 | E. B. Westlake, Jr. | Automatic control of bubble size in blown film |
JPS5878725A (ja) * | 1981-11-04 | 1983-05-12 | Idemitsu Petrochem Co Ltd | インフレ−シヨンフイルム成形装置 |
US4464319A (en) * | 1982-08-05 | 1984-08-07 | Reifenhauser Gmbh & Co. Maschinenfabrik | Method of and apparatus for the coiling of flattened synthetic resin foil tubes |
FR2547531A1 (fr) * | 1983-06-16 | 1984-12-21 | Prosymeca | Procede et dispositif pour mesurer en fonctionnement sur une machine d'extrusion en continu au moins une caracteristique physique du produit extrude |
CA1246919A (en) * | 1984-11-27 | 1988-12-20 | Rudolf Peters | Apparatus for gusseting tubular plastic films |
DE8501177U1 (de) * | 1985-01-18 | 1986-05-22 | Alpine Ag, 8900 Augsburg | Abzugsvorrichtung für Kunststoff-Schlauchfolien |
DE3508626C1 (de) * | 1985-03-11 | 1986-02-27 | Windmöller & Hölscher, 4540 Lengerich | Flachlege- und Abzugsvorrichtung fuer eine aus Kunststoff im Blasverfahren hergestellte Schlauchfolienbahn |
JPH089195B2 (ja) * | 1986-12-23 | 1996-01-31 | 昭和電工株式会社 | 合成樹脂製袋素材の製造方法 |
DE8707626U1 (de) * | 1987-05-27 | 1987-08-13 | Alpine Ag, 8900 Augsburg | Abzugsvorrichtung für Schlauchfolien |
US5035602A (en) * | 1987-06-15 | 1991-07-30 | Ford Motor Company | Resin transfer molding core and preform |
US5045251A (en) * | 1987-06-15 | 1991-09-03 | Ford Motor Company | Method of resin transfer molding a composite article |
US4859398A (en) * | 1987-07-02 | 1989-08-22 | Mobil Oil Corporation | High shear extrusion of linear low density polyethylene |
KR920006265B1 (ko) * | 1987-10-01 | 1992-08-01 | 미쓰비시덴기 가부시기가이샤 | 간격판의 제조장치 |
DE3743721A1 (de) * | 1987-12-23 | 1989-07-06 | Karl Veit Holger Dr Ing | Folienblasanlage mit rolle |
US4931003A (en) * | 1987-12-31 | 1990-06-05 | Minigrip, Inc. | Apparatus for making biaxially stretched tubularly extended film with transverse closure strip |
AU610366B2 (en) * | 1988-03-31 | 1991-05-16 | Idemitsu Petrochemical Co., Ltd. | Method of and apparatus for manufacturing biaxially oriented film |
DE3907180A1 (de) * | 1989-03-06 | 1990-09-13 | Windmoeller & Hoelscher | Verfahren zum ueberpruefen der funktionsfaehigkeit von mit kuehlabschnitten versehenen extrusionsduesen von kunststoffextrudern zur herstellung von flach- oder schlauchfolien |
JPH03106636A (ja) * | 1989-09-20 | 1991-05-07 | Tomy Kikai Kogyo Kk | 樹脂成形装置 |
JPH0622892B2 (ja) * | 1990-01-15 | 1994-03-30 | 株式会社マルヤス | ブロー成形品のフロストコントロール装置 |
US5198161A (en) * | 1990-03-07 | 1993-03-30 | Kao Corporation | Parison thickness control method |
DE4024326A1 (de) * | 1990-06-06 | 1991-12-12 | Windmoeller & Hoelscher | Verfahren und vorrichtung zum verringern des durchhanges und/oder des unterschiedlichen spannungsprofils einer im blasverfahren hergestellten und flachgelegten schlauchfolienbahn |
JPH0494919A (ja) * | 1990-08-10 | 1992-03-27 | Sekisui Chem Co Ltd | インフレーション成形ラインにおけるフロストライン制御装置 |
JPH04135734A (ja) * | 1990-09-27 | 1992-05-11 | Sekisui Chem Co Ltd | インフレーション成形ラインにおけるフロストライン制御装置 |
US5202068A (en) * | 1990-10-24 | 1993-04-13 | Modern Controls, Inc. | Method and apparatus for controlling blown film thickness |
DE4035196C2 (de) * | 1990-11-06 | 1997-07-10 | Pannenbecker H | Verfahren zur Herstellung von Kunststoffolien aus thermoplastischen Kunststoffen |
JPH04185422A (ja) * | 1990-11-19 | 1992-07-02 | Sekisui Chem Co Ltd | インフレーション成形ラインにおけるフロストライン制御装置 |
US5124094A (en) * | 1991-03-21 | 1992-06-23 | Minnesota Mining And Manufacturing Company | Apparatus and method for constraining a rotating tube of material |
US5288219A (en) * | 1991-03-25 | 1994-02-22 | Battenfeld Gloucester Engineering Co., Inc. | Air ring for controlling blown film thickness |
DE4118122A1 (de) * | 1991-06-03 | 1992-12-10 | Windmoeller & Hoelscher | Verfahren zur bestimmung und/oder regelung des orientierungsgrades von in blasfolienanlagen hergestellten schlauchfolien |
DE4137516A1 (de) * | 1991-07-08 | 1993-01-14 | Windmoeller & Hoelscher | Verfahren zur regelung des durchmessers von in blasfolienanlagen hergestellten schlauchfolien |
US5756041A (en) * | 1991-07-11 | 1998-05-26 | Arruda; William C. | Method and apparatus for processing blown tube films |
IT222712Z2 (it) * | 1991-07-23 | 1995-04-24 | Deponte Edoardo | Dispositivo di raffreddamento per teste di estrusione per film tubolari di materiale plastico |
US5525277A (en) * | 1992-04-13 | 1996-06-11 | Joseph; Daniel R. | Method and apparatus for cooling extruded film tubes |
US6254368B1 (en) * | 1992-04-20 | 2001-07-03 | Tomy Machinery Manufacturing Col., Ltd. | Plastic molding machine |
US5345399A (en) * | 1992-07-06 | 1994-09-06 | Union Camp Corporation | System and method for monitoring and controlling the width of a product |
US5288441A (en) * | 1992-12-24 | 1994-02-22 | Collins Steven L | System and method for extruder frost line detection |
US5891383A (en) * | 1994-06-03 | 1999-04-06 | Joseph; Daniel R. | Method and apparatus for cooling extruded film tubes |
DE4440647C2 (de) * | 1994-11-14 | 1996-10-02 | Windmoeller & Hoelscher | Abzugsvorrichtung |
DE19631640C1 (de) * | 1996-08-05 | 1998-04-02 | Windmoeller & Hoelscher | Verfahren zur Regelung der Foliendicke an einer Blasfolienanlage |
US6293778B1 (en) | 1997-02-14 | 2001-09-25 | Daniel R. Joseph | Automatically balancing a blower in a blown film extrusion line |
US6447278B1 (en) | 1998-05-26 | 2002-09-10 | Polymer Processing, Inc. | Apparatus for processing blown tube films |
CA2330955C (en) * | 2000-01-15 | 2009-06-30 | Daniel R. Joseph | Method and apparatus for lay flat control in an extruded film production line |
EP1616687A1 (de) * | 2004-07-14 | 2006-01-18 | Kdesign GmbH | Verfahren und Vorrichtung zur Produktionsüberwachung bei der Herstellung von Schlauchfolien |
DE102005035750A1 (de) * | 2005-05-23 | 2006-11-30 | Windmöller & Hölscher Kg | Umlenkeinrichtung für eine Folienbahn |
DE102005033205C5 (de) | 2005-07-13 | 2017-10-12 | Windmöller & Hölscher Kg | Verfahren zur auftragsbezogenen Änderung des Folienschlauchformats von einem Ausgangsformat zu einem Endformat sowie Blasfolienanlage, an der diese Änderung durchführbar ist |
US20110112677A1 (en) * | 2009-11-11 | 2011-05-12 | Albert John Franklin | Method for controlling a physical property of a tubular blown film |
IT1400516B1 (it) * | 2010-06-22 | 2013-06-11 | Im Plast S R L | Metodo e dispositivo per controllare lo spessore di film in estrusori in bolla |
US9050760B2 (en) | 2011-12-15 | 2015-06-09 | Ndc Technologies, Inc. | Blown film scanning method |
US20170232653A1 (en) * | 2014-10-15 | 2017-08-17 | Windmöller & Hölscher Kg | Method and Device for the Production and Further Processing of a Film Tube |
DE102014119206B4 (de) * | 2014-12-19 | 2018-12-27 | Windmöller & Hölscher Kg | Verfahren und Messvorrichtung für die Überwachung der Dehnfähigkeit bei der Herstellung von Stretchfolie in einem Gießfolienverfahren und Folienmaschine |
ITUB20151292A1 (it) * | 2015-05-28 | 2016-11-28 | Doteco S P A | Apparato e metodo per produrre un film estruso in bolla |
IT201700055831A1 (it) * | 2017-05-23 | 2018-11-23 | Syncro S R L | Dispositivo e metodo per regolare il profilo di spessore nella produzione di film soffiati |
CN108058436A (zh) * | 2017-12-21 | 2018-05-22 | 苏州星火丰盈环保包装有限公司 | 一种全生物降解垃圾袋吹膜装置 |
US11446854B2 (en) | 2019-12-16 | 2022-09-20 | Daniel R. Joseph | Method and apparatus for calibration of blown-film extrusion apparatus |
WO2024078715A1 (de) * | 2022-10-12 | 2024-04-18 | Kdesign Gmbh | Verfahren und messanordnung zum bestimmen der position einer einfriergrenze bei der herstellung einer schlauchfolie aus thermoplastischem kunststoff |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3231651A (en) * | 1961-01-03 | 1966-01-25 | Dow Chemical Co | Plastic film windup apparatus |
US3286302A (en) * | 1963-12-26 | 1966-11-22 | Industrial Nucleonics Corp | Control system for maximizing the production of a material forming process |
US3576935A (en) * | 1969-05-20 | 1971-04-27 | Du Pont | Apparatus for and method of gauge distribution in plastic tubing |
US3775035A (en) * | 1970-01-12 | 1973-11-27 | Owens Illinois Inc | Foam plastic extrusion apparatus with plurality of die lip temperature controls |
US4101614A (en) * | 1975-03-03 | 1978-07-18 | The Dow Chemical Company | Blown film process |
JPS561209A (en) * | 1979-06-15 | 1981-01-08 | Kobe Steel Ltd | Controlling method for loop in loop-controlled rolling work |
-
1978
- 1978-04-17 DE DE19782816583 patent/DE2816583A1/de not_active Ceased
-
1979
- 1979-04-04 IT IT21573/79A patent/IT1163670B/it active
- 1979-04-10 GB GB7912487A patent/GB2019045B/en not_active Expired
- 1979-04-13 US US06/029,929 patent/US4246212A/en not_active Expired - Lifetime
- 1979-04-16 BR BR7902305A patent/BR7902305A/pt unknown
- 1979-04-17 JP JP54047166A patent/JPS5830127B2/ja not_active Expired
- 1979-04-17 CH CH361979A patent/CH641401A5/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPS5830127B2 (ja) | 1983-06-27 |
CH641401A5 (de) | 1984-02-29 |
DE2816583A1 (de) | 1979-10-18 |
BR7902305A (pt) | 1979-10-23 |
IT1163670B (it) | 1987-04-08 |
GB2019045B (en) | 1982-09-02 |
US4246212A (en) | 1981-01-20 |
JPS54139670A (en) | 1979-10-30 |
GB2019045A (en) | 1979-10-24 |
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