EP0225988A1 - Lateral-expansion device - Google Patents
Lateral-expansion device Download PDFInfo
- Publication number
- EP0225988A1 EP0225988A1 EP86114332A EP86114332A EP0225988A1 EP 0225988 A1 EP0225988 A1 EP 0225988A1 EP 86114332 A EP86114332 A EP 86114332A EP 86114332 A EP86114332 A EP 86114332A EP 0225988 A1 EP0225988 A1 EP 0225988A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- rollers
- sections
- spreader
- regions
- 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.)
- Granted
Links
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/36—Guiding mechanisms
- D21F1/40—Rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/02—Conveying or guiding webs through presses or machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
- B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
- B65H23/0251—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers with a straight axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/34—Apparatus for taking-out curl from webs
Definitions
- the invention relates to a spreader device with spreader rollers with a plurality of roller sections for running material webs, in particular for printing material webs.
- rollers which, arranged axially next to one another, form an spreader roller which is arranged transversely to a running material web made of paper or the like.
- the degree of curvature of the spreader roller can be individually adjusted on the individual rollers.
- Such a spreading device composed of several axially adjacent rollers is structurally complex since considerable mechanical means are required for the required adjustment of the curvature.
- FIGS. 1 and 3 each show the spreader roller pair according to the invention, with FIGS. 2 and 4 showing sections (1, 2 and 3) through the spreader roller pair consisting of the rollers (4, 5).
- a material web to be transported for example a print carrier web (6)
- the rollers (4, 5) are arranged parallel to one another.
- At least one of the rollers, but preferably both rollers (4, 5) are axially displaceable. For this purpose, they are mounted in side walls in a corresponding manner via roller journals, not shown.
- the axial displaceability of the rollers (4, 5) must be stepless and possible while the printing carrier web (6) is running.
- the rollers (4, 5) have circular but only partially cylindrical cross sections. They taper towards one end.
- the roller (4) has a jacket (7) with three jacket sections (7a, 7b, 7c).
- the jacket (8) of the roller (5) consists of three sections (8a, 8b, 8c).
- a cylindrical jacket section for example (7a) with the largest diameter (D1)
- a cylindrical jacket section (8a) with the smallest diameter (dl) opposite the other roller (5) there is a cylindrical jacket section (8a) with the smallest diameter (dl) opposite the other roller (5).
- the largest diameter (d3) of the roller (5) of the cylindrical jacket section (8c) is opposite a cylindrical jacket section (7c) of the roller (4) with the smallest diameter (D3).
- the slope of the conical or bulbous sections (7b and 8b) lying between the above-mentioned jacket sections runs in the opposite direction.
- Fig. 1 shows the rollers (4, 5) in the neutral middle position, in which the looping path of the print carrier web (6) is the same length at every point across the entire roller width.
- the sum of the diameters (D1 to D3) of the roller (4) and the diameter (dl to d3) of the Roller (5) is the same size at every point, for example at the cuts (1, 2, 3). This can best be seen from Fig. 2.
- rollers (4, 5) move in the opposite direction, in relation to the direction of the arrows (9, 10), the opposite is achieved, namely an increase in tension in the middle of the print carrier web (6) with respect to the edge zones.
- the tangent of the taper angle of the tapered rollers in the middle casing sections (7b, 8b) must always be sufficiently smaller than the coefficient of friction between the rollers (4, 5) and the print carrier web (6).
- the smoothing effect of the print carrier web (6) running through the spreader rollers (4, 5) can be optimized by making a hard transition from the cylindrical jacket sections (7a, 8a and 7c, 8c) to the conical jacket sections (7b, 8b) avoids.
- a mathematically determined curve shape allows this transition to be shaped fluently, so that the rollers (4, 5) are formed in a shape similar to that of bottles.
- the tension roller pair (4, 5) can be used to set a tension optimum for each type of paper that is processed as a print carrier.
- the spreader roller arrangement according to the invention influences such as different paper thicknesses or material-related fluctuations in elastic modulus can thus be eliminated in their effect over the width of the printing medium web.
- the different stretching between the center of the print carrier web and its edge zone can be eliminated with the spreader rollers (4, 5) according to the invention.
- This also prevents the web from fluttering or tending to wrinkle.
- the spreader roller pair (4, 5) according to the invention can be arranged as often as desired in rotary printing presses, for example between the first printing unit and the feed unit and between individual printing units or in the folding structure.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Rotary Presses (AREA)
- Handling Of Continuous Sheets Of Paper (AREA)
Abstract
Die Breitstreckwalzen (4, 5) werden jeweils paarweise und parallel zueinander angeordnet und sind axial verschiebbar. Jede der beiden Walzen weist zwar einen kreisförmigen Querschnitt aber nur an den Randbereichen (7a, 7c, 8a, 8c) eine zylindrische Form auf. Die mittleren Abschnitte (7b, 8b) verlaufen konisch, d.h. sie verjüngen sich nach einem Ende zu. Dem Walzenabschnitt mit größtem Durchmesser steht bei der gegenüberliegenden Walze ein Abschnitt mit dem kleinsten Durchmesser gegenüber. In den mittleren Walzenabschnitten verlaufen die Steigungen entgegengesetzt. Durch Axialverschiebung einer oder der beiden Walzen (4, 5) werden in dem mittleren Walzenbereich, bezogen auf die Endbereiche, unterschiedliche Umschlingungswinkel für die zu führende Bahn (6) erreicht, so daß wahlweise entweder in den mittleren Walzenbereichen oder in den äußeren Walzenbereichen Spannungserhöhungen erzeugt werden können.The spreader rollers (4, 5) are arranged in pairs and parallel to each other and are axially displaceable. Although each of the two rollers has a circular cross section, it has a cylindrical shape only at the edge regions (7a, 7c, 8a, 8c). The middle sections (7b, 8b) are tapered, i.e. they rejuvenate after an end. The roller section with the largest diameter is opposed by a section with the smallest diameter in the opposite roller. The gradients run in opposite directions in the middle roller sections. By axially displacing one or the two rollers (4, 5), different wrap angles for the web (6) to be guided are achieved in the middle roller region, based on the end regions, so that tension increases are generated either in the middle roller regions or in the outer roller regions can be.
Description
Die Erfindung betrifft eine Breitstreckvorrichtung mit Breitstreckwalzen mit mehreren Walzenabschnitten für laufende Werkstoffbahnen, insbesondere für Bedruckstoffbahnen.The invention relates to a spreader device with spreader rollers with a plurality of roller sections for running material webs, in particular for printing material webs.
Aus der DE-AS 21 39 159 sind bereits Walzen bekannt, die axial nebeneinander angeordnet eine Breitstreckwalze bilden, die quer zu einer laufenden Werkstoffbahn aus Papier oder dgl. angeordnet wird. Der Grad der Krümmung der Breitstreckwalze ist an den einzelnen Walzen individuell einstellbar. Eine derartige aus mehreren axial nebeneinanderliegenden Walzen zusammengesetzte Breitstreckvorrichtung ist konstruktiv aufwendig, da für die erforderliche Verstellung der Krümmung erhebliche mechanische Mittel benötigt werden.From DE-AS 21 39 159 rollers are already known which, arranged axially next to one another, form an spreader roller which is arranged transversely to a running material web made of paper or the like. The degree of curvature of the spreader roller can be individually adjusted on the individual rollers. Such a spreading device composed of several axially adjacent rollers is structurally complex since considerable mechanical means are required for the required adjustment of the curvature.
Aufgabe der Erfindung ist es, Breitstreckwalzenpaare zu schaffen, die keine Mittel zur Verstellung der Walzenkrümmung benötigen, die also mit starren Walzenmänteln ausgestattet werden können, wobei dennoch unterschiedliche Breitstreckwirkungen erzielbar sein sollen. Diese Aufgabe wird durch die Anwendung der Merkmale des kennzeichnenden Teils des Patentanspruchs gelöst. Weiterbildungen ergeben sich aus der Beschreibung in Verbindung mit den Zeichnungen. In diesen zeigen jeweils schematisch:
- Fig.1 und 2 ein erfindungsgemäßes Breitstreckwalzenpaar in zwei Ansichten in einer ersten Axialposition und
- Fig.3 und 4 das erfindungsgemäße Breitstreckwalzenpaar in einer zweiten axial zueinander verschobenen Position.
- 1 and 2 an inventive spreader roller pair in two views in a first axial position and
- 3 and 4 the spreader roller pair according to the invention in a second position axially displaced relative to one another.
In den Figuren 1 und 3 ist jeweils das erfindungsgemäße Breitstreckwalzenpaar dargestellt, wobei in den Figuren 2 und 4 Schnitte (1, 2 und 3) durch das aus den Walzen (4, 5) bestehende Breitstreckwalzenpaar gezeigt sind. Wie die Figuren 2 und 4 erkennen lassen, wird eine zu transportierende Werkstoffbahn, beispielsweise eine Druckträgerbahn (6) S-förmig um die Walzen (4, 5) geführt. Die Walzen (4, 5) sind parallel zueinander angeordnet. Mindestens eine der Walzen, aber vorzugsweise beide Walzen (4, 5) sind axial verschiebbar. Hierfür sind diese über nicht dargestellte Walzenzapfen in entsprechender Weise in Seitenwänden gelagert. Die axiale Verschiebbarkeit der Walzen (4, 5) muß stufenlos und während des Laufens der - Druckträgerbahn (6) möglich sein.FIGS. 1 and 3 each show the spreader roller pair according to the invention, with FIGS. 2 and 4 showing sections (1, 2 and 3) through the spreader roller pair consisting of the rollers (4, 5). As can be seen in FIGS. 2 and 4, a material web to be transported, for example a print carrier web (6), is guided in an S-shape around the rollers (4, 5). The rollers (4, 5) are arranged parallel to one another. At least one of the rollers, but preferably both rollers (4, 5) are axially displaceable. For this purpose, they are mounted in side walls in a corresponding manner via roller journals, not shown. The axial displaceability of the rollers (4, 5) must be stepless and possible while the printing carrier web (6) is running.
Wie aus den Zeichnungen hervorgeht, weisen die Walzen (4, 5) zwar kreisförmige aber nur teilweise zylindrische Querschnitte auf. Sie verjüngen sich jeweils zum einen Ende hin. So weist die Walze (4) einen Mantel (7) mit drei Mantelabschnitten (7a, 7b, 7c) auf. In gleicher Weise besteht auch der Mantel (8) der Walze (5) aus drei Abschnitten (8a, 8b, 8c).As can be seen from the drawings, the rollers (4, 5) have circular but only partially cylindrical cross sections. They taper towards one end. The roller (4) has a jacket (7) with three jacket sections (7a, 7b, 7c). In the same way, the jacket (8) of the roller (5) consists of three sections (8a, 8b, 8c).
Erfindungsgemäß liegt jeweils an einem Ende eines zylindrischen Mantelabschnitts, beispielsweise (7a) mit größtem Durchmesser (D1) ein zylindrischer Mantelabschnitt (8a) mit kleinstem Durchmesser (dl) der anderen Walze (5) gegenüber. In der gleichen Weise liegt dem größten Durchmesser (d3) der Walze (5) des zylindrischen Mantelabschnittes (8c) ein zylindrischer Mantelabschnitt (7c) der Walze (4) mit dem kleinsten Durchmesser (D3) gegenüber. Die Steigung der zwischen den genannten Mantelabschnitten liegenden konischen oder bauchigen Abschnitte (7b und 8b) verläuft in entgegengesetzer Richtung.According to the invention, at each end of a cylindrical jacket section, for example (7a) with the largest diameter (D1), there is a cylindrical jacket section (8a) with the smallest diameter (dl) opposite the other roller (5). In the same way, the largest diameter (d3) of the roller (5) of the cylindrical jacket section (8c) is opposite a cylindrical jacket section (7c) of the roller (4) with the smallest diameter (D3). The slope of the conical or bulbous sections (7b and 8b) lying between the above-mentioned jacket sections runs in the opposite direction.
Fig.1 zeigt die Walzen (4, 5) in der neutralen Mittelstellung, bei der der Umschlingungsweg der Druckträgerbahn (6) Über die gesamte Walzenbreite gesehen an jeder Stelle gleich lang ist. Abgesehen von unbedeutenden Differenzen, bedingt durch die sich ändernde Tangentenlage der Druckträgerbahn (6) zwischen den Walzen (4 und 5) gilt, daß die Summe der Durchmesser (D1 bis D3) der Walze (4) und der Durchmesser (dl bis d3) der Walze (5) an jeder Stelle, beispielsweise an den Schnitten (1, 2, 3) gleich groß ist. Dies ist am besten aus Fig.2 erkennbar.Fig. 1 shows the rollers (4, 5) in the neutral middle position, in which the looping path of the print carrier web (6) is the same length at every point across the entire roller width. Apart from insignificant differences, due to the changing tangent position of the print carrier web (6) between the rollers (4 and 5), the sum of the diameters (D1 to D3) of the roller (4) and the diameter (dl to d3) of the Roller (5) is the same size at every point, for example at the cuts (1, 2, 3). This can best be seen from Fig. 2.
Wenn die Walzen (4, 5) axial auseinanderbewegt werden, wie durch die Pfeile (9, 10) in Fig.3 angedeutet ist, bleiben die Umschlingungen an den zylindrischen Mantelabschnitten (7a, 8a, 7c, 8c) unverändert gleich groß. Die mittleren Walzenabschnitte (7b und 8b) sind jedoch in der Summe kleiner geworden, so daß die Umschlingung in diesem Bereich für die Druckträgerbahn (6) ebenfalls kleiner geworden ist. Dies bewirkt, daß in der Druckträgerbahnmitte ein kürzerer Umweg und somit eine geringere Spannung als in den äußeren Mantelabschnitten herrscht. Durch eine größere Voreilung im Antrieb kann nun bekanntlich die Spannung in der Bahnmitte konstant gehalten werden, so daß am Bahnrand eine Spannungserhöhung erzeugt wird.If the rollers (4, 5) are moved axially apart, as indicated by the arrows (9, 10) in FIG. 3, the wraps on the cylindrical jacket sections (7a, 8a, 7c, 8c) remain the same size. The middle roller sections (7b and 8b), however, have become smaller in total, so that the wrap in this area for the print carrier web (6) has also become smaller. This means that there is a shorter detour in the middle of the print carrier web and therefore less tension than in the outer jacket sections. As is known, the tension in the center of the web can be kept constant by a larger lead in the drive, so that a tension increase is generated at the web edge.
Bei umgekehrter Axialbewegung der Walzen (4, 5), bezogen auf die Richtung der Pfeile (9, 10), wird das Gegenteil bewirkt, nämlich eine Spannungserhöhung in der Mitte der Druckträgerbahn (6) gegenüber den Randzonen.If the rollers (4, 5) move in the opposite direction, in relation to the direction of the arrows (9, 10), the opposite is achieved, namely an increase in tension in the middle of the print carrier web (6) with respect to the edge zones.
Damit während der Führung der Druckträgerbahn diese seitlich nicht abdriften kann, muß der Tangens des Kegelwinkels der Walzenverjüngungen in den mittleren Mantelabschnitten (7b, 8b) stets ausreichend kleiner als der Reibungskoeffizient zwischen den Walzen (4, 5) und der Druckträgerbahn (6) sein. Eine Optimierung des Glätteffektes der durch die Breitstreckwalzen (4, 5) laufenden Druckträgerbahn (6) kann dadurch erreicht werden, daß man einen harten Obergang von den zylindrischen Mantelabschnitten (7a, 8a und 7c, 8c) zu den konischen Mantelabschnitten (7b, 8b) vermeidet. Durch eine mathematisch bestimmte Kurvenform, z.B. nach einer Sinusfunktion, kann dieser Obergang fließend geformt werden, so daß die Walzen (4, 5) in Form ähnlich der von Flaschen entstehen.So that the guide of the print carrier web cannot drift laterally, the tangent of the taper angle of the tapered rollers in the middle casing sections (7b, 8b) must always be sufficiently smaller than the coefficient of friction between the rollers (4, 5) and the print carrier web (6). The smoothing effect of the print carrier web (6) running through the spreader rollers (4, 5) can be optimized by making a hard transition from the cylindrical jacket sections (7a, 8a and 7c, 8c) to the conical jacket sections (7b, 8b) avoids. A mathematically determined curve shape, for example according to a sine function, allows this transition to be shaped fluently, so that the rollers (4, 5) are formed in a shape similar to that of bottles.
Durch Beobachten der Laufruhe der Druckträgerbahn (6) während des Betriebes kann mit dem erfindungsgemäßen Breitstreckwalzenpaar (4, 5) ein Spannungsoptimum für jede Papiersorte eingestellt werden, die als Druckträger verarbeitet wird.By observing the smoothness of the print carrier web (6) during operation, the tension roller pair (4, 5) according to the invention can be used to set a tension optimum for each type of paper that is processed as a print carrier.
Mit der erfindungsgemäßen Breitstreckwalzenancrdnung können somit Einflüsse, wie unterschiedliche Papierstärken oder materialbedingte Elastizitätsmodulschwankungen, in ihrer Auswirkung über die Druckträgerbahnbreite eliminiert werden. Insbesondere kann die unterschiedliche Dehnung zwischen Druckträgerbahnmitte und deren Randzone mit den erfindungsgemäßen Breitstreckwalzen (4, 5) eliminiert werden. Dadurch wird auch vermieden, daß die Bahn zu flattern anfängt oder zur Faltenbildung neigt. Es versteht sich, daß das erfindungsgemäße Breitstreckwalzenpaar (4, 5) beliebig oft in Rotationsdruckmaschinen, beispielsweise zwischen dem ersten Druckwerk und dem Einzugswerk und zwischen einzelnen Druckwerken oder im Falzaufbau, angeordnet werden kann.With the spreader roller arrangement according to the invention, influences such as different paper thicknesses or material-related fluctuations in elastic modulus can thus be eliminated in their effect over the width of the printing medium web. In particular, the different stretching between the center of the print carrier web and its edge zone can be eliminated with the spreader rollers (4, 5) according to the invention. This also prevents the web from fluttering or tending to wrinkle. It goes without saying that the spreader roller pair (4, 5) according to the invention can be arranged as often as desired in rotary printing presses, for example between the first printing unit and the feed unit and between individual printing units or in the folding structure.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3545270 | 1985-12-20 | ||
DE3545270A DE3545270C1 (en) | 1985-12-20 | 1985-12-20 | Spreader |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0225988A1 true EP0225988A1 (en) | 1987-06-24 |
EP0225988B1 EP0225988B1 (en) | 1989-02-22 |
Family
ID=6289060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86114332A Expired EP0225988B1 (en) | 1985-12-20 | 1986-10-16 | Lateral-expansion device |
Country Status (4)
Country | Link |
---|---|
US (1) | US4748909A (en) |
EP (1) | EP0225988B1 (en) |
JP (1) | JPS62161661A (en) |
DE (2) | DE3545270C1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998033734A1 (en) * | 1997-01-30 | 1998-08-06 | Valmet Corporation | Take-out roll, spreader roll, or equivalent for a web-like material |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0737132B2 (en) * | 1990-06-30 | 1995-04-26 | 株式会社東京機械製作所 | Guide roller device for rotary press |
US5891008A (en) * | 1995-12-15 | 1999-04-06 | The Procter & Gamble Company | Sheet products for use in a pop-up dispenser and method for forming from stretched ribbons |
US5642835A (en) * | 1995-12-15 | 1997-07-01 | The Procter & Gamble Company | Sheet products for use in a pop-up dispenser and method for forming |
US20040154146A1 (en) * | 2001-05-17 | 2004-08-12 | Pruitt Paul R. | Web spreader roll and methods for spreading webs of material |
DE10335758C5 (en) | 2003-08-05 | 2015-12-03 | Manroland Web Systems Gmbh | Method and printing unit for influencing the lateral web spread, in particular on rotary printing presses |
DE102005048246B4 (en) * | 2005-10-07 | 2009-09-10 | Maschinenfabrik Wifag | Rotary printing machine with elongation compensator and method for printing a longitudinally cut web |
US7538680B2 (en) * | 2006-04-28 | 2009-05-26 | Checkpoint Systems, Inc. | Alarm systems, wireless alarm devices, and article security methods |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3003403A1 (en) * | 1980-01-31 | 1981-08-06 | Ramisch Kleinewefers Gmbh, 4150 Krefeld | Stretching thermoplastic film - using roller with longitudinal grooves containing conducting plastics threads fixed to skewed end discs |
GB2139988A (en) * | 1983-03-11 | 1984-11-21 | Toyo Machinery Co | Moving web expanding and guiding apparatus |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE196742C (en) * | ||||
US813288A (en) * | 1905-07-03 | 1906-02-20 | Thomas Hancock | Felt-regulating device for paper-machines. |
US920122A (en) * | 1907-05-03 | 1909-05-04 | Frank Farnworth | Apparatus for stretching textile fabrics. |
AT55619B (en) * | 1911-01-02 | 1912-09-25 | Alfred Meister | Tissue stretching machine. |
GB785680A (en) * | 1955-02-01 | 1957-10-30 | United States Steel Corp | Improvements in and relating to self-centering or aligning rollers |
GB939351A (en) * | 1961-01-12 | 1963-10-16 | Ici Ltd | Improvements in web feed rollers |
DE2139159C3 (en) * | 1971-08-05 | 1974-08-15 | Jagenberg-Werke Ag, 4000 Duesseldorf | Device for spreading webs of material, in particular webs of paper |
CH612478A5 (en) * | 1976-04-30 | 1979-07-31 | Armand Demiere | |
IT1083519B (en) * | 1977-06-15 | 1985-05-21 | Bassani Mariano | ROPE FABRIC OPENING SYSTEM |
US4693587A (en) * | 1984-07-16 | 1987-09-15 | Canon Kabushiki Kaisha | Image forming apparatus |
-
1985
- 1985-12-20 DE DE3545270A patent/DE3545270C1/en not_active Expired
-
1986
- 1986-10-16 DE DE8686114332T patent/DE3662135D1/en not_active Expired
- 1986-10-16 EP EP86114332A patent/EP0225988B1/en not_active Expired
- 1986-11-12 US US06/930,337 patent/US4748909A/en not_active Expired - Fee Related
- 1986-12-19 JP JP61301891A patent/JPS62161661A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3003403A1 (en) * | 1980-01-31 | 1981-08-06 | Ramisch Kleinewefers Gmbh, 4150 Krefeld | Stretching thermoplastic film - using roller with longitudinal grooves containing conducting plastics threads fixed to skewed end discs |
GB2139988A (en) * | 1983-03-11 | 1984-11-21 | Toyo Machinery Co | Moving web expanding and guiding apparatus |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998033734A1 (en) * | 1997-01-30 | 1998-08-06 | Valmet Corporation | Take-out roll, spreader roll, or equivalent for a web-like material |
US6494823B2 (en) | 1997-01-30 | 2002-12-17 | Metso Paper, Inc. | Take-out roll, spreader roll, or equivalent for a web-like material |
Also Published As
Publication number | Publication date |
---|---|
JPS62161661A (en) | 1987-07-17 |
EP0225988B1 (en) | 1989-02-22 |
US4748909A (en) | 1988-06-07 |
DE3545270C1 (en) | 1987-04-23 |
DE3662135D1 (en) | 1989-03-30 |
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