EP0652992B1 - Press of paper machine for thin papers - Google Patents
Press of paper machine for thin papers Download PDFInfo
- Publication number
- EP0652992B1 EP0652992B1 EP94917672A EP94917672A EP0652992B1 EP 0652992 B1 EP0652992 B1 EP 0652992B1 EP 94917672 A EP94917672 A EP 94917672A EP 94917672 A EP94917672 A EP 94917672A EP 0652992 B1 EP0652992 B1 EP 0652992B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- press
- roller
- gap
- assembly according
- felted
- 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 - Lifetime
Links
- 238000001035 drying Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000009499 grossing Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/04—Arrangements thereof
- D21F3/045—Arrangements thereof including at least one extended press nip
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/0281—Wet presses in combination with a dryer roll
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/04—Arrangements thereof
Definitions
- the invention relates to a press section of a paper machine for thin papers according to the preamble of claim 1, in particular for single-sided papers or tissue, in particular the web take-off on the last press unit.
- Press units in paper machines in which the water is discharged on one side are well known. For example, reference is made to the document "Wochenblatt für Textilfabrikation 5 (1988)", page 173 ff. There, after the press nip, the web is removed from the smooth roll in free train, e.g. a smoothing press, a drying cylinder or an in-line dryer section.
- German patent application DE 42 24 730 C1 which does not belong to the prior art after the priority date of the present application, in which a decrease in the paper web from a roller through a press hose of an extended nip press 13.3 is shown in FIG.
- the disadvantage here is that the service life of the press hose is greatly reduced by contact with the hot surface of the following cylinder 20.
- a press nip which is formed from a circumferential, smooth surface in contact with paper and a felted press roller, the smooth surface transfers the paper web behind the press nip to a heatable roller, avoiding a free paper draw, the smooth surface being the outer surface of a tube roller is formed with a rigid roll shell.
- the felted press roll is an extended nip or shoe press roll.
- the smooth tube roll in front of the press nip forms a further, preceding press nip (pre-press nip) with another felted press roll.
- pre-press nip preceding press nip
- a separate, endless felt is provided for each press nip; however, a single felt can also be used for both press nips may be advantageous due to operational circumstances.
- the further felted press roll is also a shoe or extended-nip press roll.
- the further felted press roll is a suction roll, the suction zone of which is predominantly in front of the pre-press nip.
- the smooth tube roller may also be advantageous to design the smooth tube roller as a deflection adjusting roller in order to maintain uniform line pressures and thus improve web transfer.
- a further advantageous embodiment of the press section results when the heatable roller is a non-felted tube roller guiding the web, which delivers the web to a drying cylinder, preferably avoiding the free paper draw. It can also be advantageous here if the heatable roll forms an after-press nip with an additional, felted press roll.
- the gap between the smooth tube roller and the heatable roller in particular a drying cylinder, can be opened in order to facilitate starting without paper.
- Figures 1 to 7 show variants of a web transfer between the press unit and the subsequent paper machine with smooth rollers.
- FIG. 1 shows the last press unit of a paper machine with a smooth central roller 1 (a tube roller - that is to say with a dimensionally stable outer jacket) which, with another roller 2, forms a penultimate press nip together with a single felt running through it.
- the roller 2 can be a suction roller or a blind-drilled roller.
- the paper web then remains on the smooth roller 1 and is guided to a last press nip which is formed by the roller 1 and an extended nip press 3. Thereafter, the paper web remains on the smooth roller 1 and is transferred to a large smoothing cylinder 4, which can also be designed as a tissue cylinder, according to the invention.
- Figure 2 shows a similar arrangement as Figure 1, but the last press nip between the central roll 1, which is also designed as a tube roll, and the counter roll 3 is not designed as a long nip press but as a so-called smoothing press.
- the paper web also remains on the smooth central roller 1 after the last press nip and is then transferred to a cylinder 4, which is heated, for example.
- a cylinder 4 which is heated, for example.
- FIG. 3 shows a special embodiment of the transfer according to the invention.
- the beginning of a paper machine is shown here, in which stock suspension is injected between a screen 6 and a felt 10, which abut a blow roller 20, via a headbox 11.
- the paper web is transported lying on this felt up to the press nip, which is formed here by an extended nip press 3 and the smooth tube roll 1 according to the invention. Possible devices between the press nip and the headbox are not shown here.
- the paper web is transferred directly to a subsequent cylinder 5 via the smooth roller 1.
- the roller 1 can preferably be designed as a deflection adjusting roller, in order to achieve the to ensure even pressure, especially on the following cylinder 5.
- Figure 4 shows a situation at the last press nip of a press section.
- a press unit between two cylinders 1 and 3 is shown here, the cylinder 1 representing the smooth cylinder according to the invention with a dimensionally stable surface.
- the two cylinders 1 and 3 are provided here according to the invention on a movable lever arm 40, so that they can be moved in and out in their entirety by the subsequent large cylinder 30 without the press nip between the two cylinders 1 and 3 changing.
- FIG. 5 shows a further variant of the invention.
- a felt 10 carrying a paper web 100 is shown.
- the felt 10 guides the paper web from above over a cylinder 300, which forms a penultimate press nip with the subsequent smooth tube roll 1 according to the invention.
- the felt runs via a conditioning device 8 and a deflection roll 400 separately from the paper web back to the last press nip via the roll 600 and becomes returned from there, while the paper web remains on the smooth roller 1 and is transferred directly to the subsequent drying cylinder 7.
- Figure 6 shows a press unit according to the invention of a compact design. It is introduced here via a headbox 11 stock suspension between a felt and a smooth tube roll 1. An elongated nip press 3 rests on the smooth tube roll 1 and then in turn on the smooth roll a next smooth roll 1 ', which transfers the paper web to the subsequent station of the paper machine.
- FIG. 7 shows the arrangement according to the invention using the example of a paper machine for producing crepe paper.
- a belt 500 coming from the right can be seen on which the paper web is guided.
- the tape is passed together with the paper web over a suction roller 200, which transfers the paper web to a profile roller 1 with a rigid jacket.
- the belt 500 is being fed back again via a deflection roller, the paper web remains on the profile roller 1 and is fed to a press nip, formed by the profile roller 1 and an extended nip press 3, from where it continues to remain on the surface of the profile roller and then is transferred to a crepe cylinder 4, which rests on the profile roller 1.
Landscapes
- Paper (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Press Drives And Press Lines (AREA)
- Color Printing (AREA)
Abstract
Description
Die Erfindung betrifft eine Pressenpartie einer Papiermaschine für dünne Papiere gemäß dem Oberbegriff des Anspruches 1 insbesondere für einseitige Papiere oder Tissue, insbesondere die Bahnabnahme an der letzten Presseneinheit.The invention relates to a press section of a paper machine for thin papers according to the preamble of
Presseneinheiten in Papiermaschinen, bei denen das Wasser einseitig abgeführt wird sind hinlänglich bekannt. Beispielsweise wird auf die Schrift "Wochenblatt für Papierfabrikation 5 (1988)", Seite 173 ff, verwiesen. Es wird dort nach dem Preßspalt die Bahn im freien Zug von der glatten Walze abgenommen um z.B. einer Glättpresse, einem Trockenzylinder oder einer Reihen-Trockenpartie zugeführt zu werden.Press units in paper machines in which the water is discharged on one side are well known. For example, reference is made to the document "Wochenblatt für Papierfabrikation 5 (1988)", page 173 ff. There, after the press nip, the web is removed from the smooth roll in free train, e.g. a smoothing press, a drying cylinder or an in-line dryer section.
Nachteil dieser Ausführungsformen ist, daß spezielle Überführelemente für die Bahn notwendig sind und die Abrißhäufigkeit relativ hoch ist.The disadvantage of these embodiments is that special transfer elements are necessary for the web and the frequency of tearing is relatively high.
Weiterhin wird auf die nach dem Prioritätstag der vorliegenden Anmeldung und damit nicht zum Stand der Technik gehörende deutsche Patentanmeldung DE 42 24 730 C1 verwiesen, in der in Figur 8 eine Abnahme der Papierbahn von einer Walze durch einen Preßschlauch einer Langspaltpresse 13.3 dargestellt ist. Hier ist nachteilig, daß die Standzeit des Preßschlauches durch den Kontakt mit der heißen Oberfläche des folgenden Zylinders 20 stark reduziert wird.Furthermore, reference is made to the German patent application DE 42 24 730 C1, which does not belong to the prior art after the priority date of the present application, in which a decrease in the paper web from a roller through a press hose of an extended nip press 13.3 is shown in FIG. The disadvantage here is that the service life of the press hose is greatly reduced by contact with the hot surface of the following
Es ist Aufgabe der Erfindung eine Presseneinheit darzustellen bei der auf derartige Überführelemente verzichtet werden kann, wodurch die Abrißhäufigkeit der Papierbahn reduziert wird und gleichzeitig Kosteneinsparungen durch verringerte Betriebskosten erbringt.It is an object of the invention to present a press unit in which such transfer elements can be dispensed with, as a result of which the frequency of tearing of the paper web is reduced and, at the same time, cost savings are achieved through reduced operating costs.
Die Aufgabe wird durch die kennzeichnenden Merkmale des Anspruches 1 gelöst.The object is achieved by the characterizing features of
Hierbei ergeben sich die folgenden Vorteile:
- Die heizbare Walze (z.B ein Trocken oder Glättzylinder), an die die Papierbahn von der Rohr-Preßwalze überführt wird, kommt weder mit einem Filz, noch mit einem "Preßschlauch" oder "Preßmantel" in Kontakt.
- Der Filz muß nur einen einzigen Preßspalt durchlaufen.
- Daraus ergibt sich eine höhere Lebensdauer sowohl für den Preßmantel als auch den Filz.
- The heatable roll (for example a drying or smoothing cylinder) to which the paper web is transferred from the tube press roll does not come into contact with either a felt or a "press hose" or "press jacket".
- The felt only has to pass through a single press nip.
- This results in a longer service life for both the press jacket and the felt.
Gemäß dem Gedanken der Erfindung ergeben sich die folgenden, möglichen Ausgestaltungsformen einer Pressenpartie für vorzugsweise dünne Papiere, insbesondere auch Tissuepapiere:According to the idea of the invention, the following possible configurations of a press section for preferably thin papers, in particular also tissue papers, result:
Es ist zunächst ein Preßspalt vorgesehen, der aus einer umlaufenden, glatten papierberührten Oberfläche und aus einer befilzten Preßwalze gebildet wird, die glatte Oberfläche übergibt unter Vermeidung eines freien Papierzuges die Papierbahn hinter dem Preßspalt an eine heizbare Walze, wobei die glatte Oberfläche als Mantelfläche einer Rohrwalze mit formsteifem Walzenmantel ausgebildet ist.First, a press nip is provided, which is formed from a circumferential, smooth surface in contact with paper and a felted press roller, the smooth surface transfers the paper web behind the press nip to a heatable roller, avoiding a free paper draw, the smooth surface being the outer surface of a tube roller is formed with a rigid roll shell.
Vorteilhaft ist es, wenn die befilzte Preßwalze eine Langspalt- oder Schuhpreßwalze ist.It is advantageous if the felted press roll is an extended nip or shoe press roll.
Weiterhin ist es besonders vorteilhaft, wenn bei einer derart ausgestalteten Pressenpartie die glatte Rohrwalze vor dem Preßspalt mit einer weiteren befilzten Preßwalze einen weiteren, vorangehenden Preßspalt (Vor-Preßspalt) bildet. Hier ist es auch vorteilhaft wenn für beide Preßspalte jeweils ein separater, endloser Filz vorgesehen ist; jedoch kann auch ein einziger Filz für beide Preßspalte aufgrund der Betriebsumstände vorteilhaft sein. Besonders vorteilhaft bezüglich der Trockenleistung kann es sein, wenn auch die weitere befilzte Preßwalze eine Schuh- oder Langspaltpreßwalze ist.Furthermore, it is particularly advantageous if, in the case of a press section designed in this way, the smooth tube roll in front of the press nip forms a further, preceding press nip (pre-press nip) with another felted press roll. Here it is also advantageous if a separate, endless felt is provided for each press nip; however, a single felt can also be used for both press nips may be advantageous due to operational circumstances. It can be particularly advantageous with regard to the drying performance if the further felted press roll is also a shoe or extended-nip press roll.
Vorteilhaft kann auch sein, wenn die weitere befilzte Preßwalze eine Saugwalze ist, deren Saugzone überwiegend vor dem Vor-Preßspalt liegt.It can also be advantageous if the further felted press roll is a suction roll, the suction zone of which is predominantly in front of the pre-press nip.
Bei den dargestellten Ausführungsformen kann es auch vorteilhaft sein, die glatte Rohrwalze als Durchbiegungs-Einstellwalze auszugestalten, um gleichmäßige Liniendrücke zu erhalten und damit die Bahnübergabe zu verbessern.
Eine weitere vorteilhafte Ausgestaltung der Pressenpartie ergibt sich, wenn die heizbare Walze eine nicht befilzte, die Bahn führende Rohrwalze ist, welche die Bahn an einen Trockenzylinder abgibt, wobei vorzugsweise der freie Papierzug vermieden wird. Hierbei kann es auch vorteilhaft sein, wenn die heizbare Walze mit einer zusätzlichen, befilzten Preßwalze einen Nach-Preßspalt bildet.In the illustrated embodiments, it may also be advantageous to design the smooth tube roller as a deflection adjusting roller in order to maintain uniform line pressures and thus improve web transfer.
A further advantageous embodiment of the press section results when the heatable roller is a non-felted tube roller guiding the web, which delivers the web to a drying cylinder, preferably avoiding the free paper draw. It can also be advantageous here if the heatable roll forms an after-press nip with an additional, felted press roll.
Bei den dargestellten Ausführungen kann es sich ebenfalls als vorteilhaft erweisen, wenn der Spalt zwischen der glatten Rohrwalze und der beheizbaren Walze, insbesondere eines Trockenzylinders, öffenbar ist, um das Anfahren ohne Papier zu erleichtern.In the embodiments shown, it can also prove to be advantageous if the gap between the smooth tube roller and the heatable roller, in particular a drying cylinder, can be opened in order to facilitate starting without paper.
Die Erfindung ist anhand der Zeichnungen näher erläutert. Darin ist im übrigen folgendes dargestellt:The invention is explained in more detail with reference to the drawings. It also shows the following:
Figuren 1 bis 7 zeigen Ausführungsvarianten einer Bahnübergabe zwischen der Presseneinheit und der nachfolgenden Papiermaschine mit glatten Walzen.Figures 1 to 7 show variants of a web transfer between the press unit and the subsequent paper machine with smooth rollers.
Figur 1 zeigt die letzte Presseneinheit einer Papiermaschine mit einer glatten Zentralwalze 1 (einer Rohrwalze - also mit formsteifem Außenmantel), die mit einer anderen Walze 2 einen vorletzten Preßspalt zusammen mit einem hindurchlaufenden Einfachfilz bildet. Die Walze 2 kann dabei eine Saugwalze oder eine blind-gebohrte Walze sein. Die Papierbahn bleibt danach auf der glatten Walze 1 liegen und wird zu einem letzten Preßspalt geführt, der durch die Walze 1 und eine Langspalt-Presse 3 gebildet wird. Danach bleibt die Papierbahn weiterhin an der glatten Walze 1 liegen und wird zu einem großen Glättzylinder 4 der auch als Tissue-Zylinder ausgebildet sein kann, erfindungsgemäß überführt.FIG. 1 shows the last press unit of a paper machine with a smooth central roller 1 (a tube roller - that is to say with a dimensionally stable outer jacket) which, with another
Figur 2 zeigt eine ähnliche Anordnung wie Figur 1, jedoch ist der letzte Preßspalt zwischen der Zentralwalze 1, die ebenfalls als Rohrwalze ausgebildet ist, und der Gegenwalze 3 nicht als Langspalt-Presse sondern als sogenannte Smoothing-Presse ausgeführt. Die Papierbahn bleibt ebenfalls wie in Figur 2 nach dem letzten Preßspalt auf der glatten Zentralwalze 1 liegen und wird danach zu einem beispielsweise beheizten Zylinder 4 überführt. Alternativ besteht hier auch die Möglichkeit die Papierbahn vom Zylinder 4 direkt an einen darauf folgenden Glättzylinder weiterzugeben.Figure 2 shows a similar arrangement as Figure 1, but the last press nip between the
Figur 3 zeigt eine besondere Ausführungsform der erfindungsgemäßen Überführung. Es ist hier der Beginn einer Papiermaschine dargestellt, in der über einen Stoffauflauf 11 Stoffsuspension zwischen einem Sieb 6 und einem Filz 10, die an einer Blaswalze 20 anliegen, eingespritzt wird. Die Papierbahn wird auf diesem Filz liegend bis zum Preßspalt, der hier durch eine Langspalt-Presse 3 und der erfindungsgemäßen glatten Rohrwalze 1 gebildet wird, weiter transportiert. Mögliche Vorrichtungen zwischen dem Preßspalt und dem Stoffauflauf sind hier nicht dargestellt. Nach dem letzten Preßspalt wird die Papierbahn erfindungsgemäß über die glatte Walze 1 direkt an einen darauf folgenden Zylinder 5 übergeben. Die Walze 1 kann vorzugsweise als Durchbiegungs-Einstellwalze ausgeführt sein, um einen möglichst gleichmäßigen Andruck, insbesondere an den folgenden Zylinder 5, zu gewährleisten.
Figur 4 zeigt eine Situation am letzten Preßspalt einer Pressenpartie. Es ist hier eine Presseneinheit zwischen zwei Zylindern 1 und 3 dargestellt, wobei der Zylinder 1 den erfindungsgemäßen glatten Zylinder mit formsteifer Oberfläche darstellt. Die beiden Zylinder 1 und 3 sind erfindungsgemäß hier an einem beweglichen Hebelarm 40 vorgesehen, so daß sie in ihrer Gesamtheit von dem darauf folgenden großen Zylinder 30 an- und abgefahren werden können ohne daß sich der Preßspalt zwischen den beiden Zylindern 1 und 3 ändert.FIG. 3 shows a special embodiment of the transfer according to the invention. The beginning of a paper machine is shown here, in which stock suspension is injected between a screen 6 and a
Figure 4 shows a situation at the last press nip of a press section. A press unit between two
Figur 5 zeigt eine weitere Variante der Erfindung. Es ist von links kommend ein eine Papierbahn 100 tragender Filz 10 dargestellt. Der Filz 10 führt die Papierbahn von oben über einen Zylinder 300, der mit der darauffolgenden erfindungsgemäßen glatten Rohrwalze 1 einen vorletzten Preßspalt bildet. Während nach dem vorletzten Preßspalt die Papierbahn direkt zum letzten Preßspalt zwischen der glatten Rohrwalze 1 und der nachfolgenden Walze 600 geführt wird, verläuft der Filz über eine Konditioniervorrichtung 8 und eine Umlenkwalze 400 getrennt von der Papierbahn wieder zurück zum letzten Preßspalt über die Walze 600 und wird von dort zurückgeführt, während die Papierbahn an der glatten Walze 1 liegenbleibt und direkt an den nachfolgenden Trockenzylinder 7 übergeben wird.Figure 5 shows a further variant of the invention. Coming from the left, a felt 10 carrying a
Figur 6 zeigt eine erfindungsgemäße Presseneinheit kompakter Bauweise. Es wird hier über einen Stoffauflauf 11 Stoffsuspension zwischen ein Filz und eine glatte Rohrwalze 1 eingeführt. An der glatten Rohrwalze 1 liegt eine Langspalt-Presse 3 an und daran folgend wiederum an der glatten Walze eine nächste glatte Walze 1', die die Papierbahn zur nachfolgenden Station der Papiermaschine überführt.Figure 6 shows a press unit according to the invention of a compact design. It is introduced here via a
Figur 7 zeigt die erfindungsgemäße Anordnung am Beispiel einer Papiermaschine zum Erzeugen von Krepp-Papier. Es ist ein von rechts kommendes Band 500 zu sehen, auf dem die Papierbahn geführt wird. Das Band wird zusammen mit der Papierbahn über eine Saugwalze 200 geleitet, die die Papierbahn an eine Profilwalze 1 mit formsteifem Mantel übergibt. Während das Band 500 wieder über eine Umlenkrolle zurückgeführt wird, verbleibt die Papierbahn auf der Profilwalze 1 und wird einem Preßspalt, gebildet durch die Profilwalze 1 und eine Langspalt-Presse 3, zugeführt, von wo aus sie weiterhin auf der Oberfläche der Profilwalze verbleibt und dann auf einen Krepp-Zylinder 4 überführt wird, der an der Profilwalze 1 anliegt.FIG. 7 shows the arrangement according to the invention using the example of a paper machine for producing crepe paper. A
Claims (11)
- Press assembly of a paper machine for thin papers with the following features:
1.1 a press gap is provided which is formed of a peripheral, smooth surface in contact with the paper and a felted press roller (3, 600),
characterised in that1.2 the smooth surface passes the paper web (100) behind the press gap to a heatable roller (4, 5, 7, 3c, 1') whilst avoiding a free paper pull, and1.3 the smooth surface is the casing surface of a tubular roller with shape-retaining roller casing (1). - Press assembly according to Claim 1, characterised in that the felted press roller (3) is an elongated gap or shoe-press roller.
- Press assembly according to Claim 1 and 2, characterised in that the smooth tubular roller (1) establishes ahead of the press gap together with a further felted press roller (2, 200, 300) an additional pre-press gap located ahead of the press gap of feature 1.1.
- Press assembly according to Claim 3, characterised in that for both press gaps is provided a separate continuous felt.
- Press assembly according to one of Claims 3 or 4, characterised in that the additional felted press roller is a shoe- or elongated-gap press roller.
- Press assembly according to Claim 3, characterised in that for both press gaps is provided a respective single communal felt (10).
- Press assembly according to one of Claims 3, 4 or 6, characterised in that the additional felted press roller (200) is a suction roller, the suction zone of which is predominantly in front of the pre-press gap.
- Press assembly according to one of Claims 1 to 7, characterised in that the smooth tubular roller (1) is a flexible adjustment roller.
- Press assembly according to one of Claims 1 to 8, characterised in that the heatable roller (4) is an unfelted tubular roller which guides the web and which passes the web to a drying cylinder, preferably whilst avoiding a free paper pull.
- Press assembly according to Claim 8, characterised in that the heatable roller (4) together with an additional felted press roller form a post-press gap.
- Press assembly according to one of Claims 1 to 10, characterised in that the gap between the smooth tubular roller (1) and the heatable roller (30), in particular of a drying cylinder, can be opened.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4318036 | 1993-05-29 | ||
| DE4318036A DE4318036C1 (en) | 1993-05-29 | 1993-05-29 | Press unit of a paper machine for the production of tissue paper |
| DE4321402 | 1993-06-26 | ||
| DE19934321402 DE4321402A1 (en) | 1993-06-26 | 1993-06-26 | Paper-making machine press section - has a smooth continuous surface as final unit to transfer web onwards in the prodn. of thin paper |
| PCT/EP1994/001730 WO1994028240A1 (en) | 1993-05-29 | 1994-05-27 | Press of paper machine for thin papers |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0652992A1 EP0652992A1 (en) | 1995-05-17 |
| EP0652992B1 true EP0652992B1 (en) | 1997-07-30 |
| EP0652992B2 EP0652992B2 (en) | 2000-11-02 |
Family
ID=25926346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94917672A Expired - Lifetime EP0652992B2 (en) | 1993-05-29 | 1994-05-27 | Press of paper machine for thin papers |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5670023A (en) |
| EP (1) | EP0652992B2 (en) |
| JP (1) | JPH08502104A (en) |
| AT (1) | ATE156208T1 (en) |
| BR (1) | BR9405408A (en) |
| CA (1) | CA2141292A1 (en) |
| DE (1) | DE59403546D1 (en) |
| ES (1) | ES2105720T3 (en) |
| FI (1) | FI950376A (en) |
| WO (1) | WO1994028240A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE511485C2 (en) * | 1998-02-04 | 1999-10-04 | Valmet Karlstad Ab | Paper machine and process for making a paper press web |
| US6547924B2 (en) | 1998-03-20 | 2003-04-15 | Metso Paper Karlstad Ab | Paper machine for and method of manufacturing textured soft paper |
| US6159343A (en) * | 1998-07-08 | 2000-12-12 | Beloit Technologies, Inc. | Press-to-dryer apparatus |
| US6248210B1 (en) | 1998-11-13 | 2001-06-19 | Fort James Corporation | Method for maximizing water removal in a press nip |
| US6231723B1 (en) | 1999-06-02 | 2001-05-15 | Beloit Technologies, Inc | Papermaking machine for forming tissue employing an air press |
| SE514973C2 (en) * | 1999-09-07 | 2001-05-21 | Valmet Karlstad Ab | Method and paper machine for making a liner |
| PL2072671T3 (en) * | 2007-12-20 | 2012-07-31 | Stora Enso Oyj | Arrangement for the press section of a web-forming machine and board or paper produced in such an arrangement |
| AT509992B1 (en) * | 2010-10-27 | 2012-01-15 | Andritz Ag Maschf | DEVICE AND METHOD FOR DRYING FIBROUS MATERIAL |
| ES2635323T3 (en) | 2011-12-07 | 2017-10-03 | Valmet Aktiebolag | Press roller with extended contact area for papermaking machine and tissue paper manufacturing process |
| EP2839074B1 (en) | 2012-04-19 | 2016-03-09 | Valmet Aktiebolag | Extended nip roll, extended nip press, papermaking machine and method of operating the extended nip press |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1381360A (en) * | 1972-12-12 | 1975-01-22 | Valmet Oy | Paper machine multi-roll press assemblies |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE273783C (en) † | ||||
| DE295540C (en) * | ||||
| US2209757A (en) * | 1936-05-20 | 1940-07-30 | Beloit Iron Works | Felt arrangement for horizontal press roll assemblies |
| DE750222C (en) * | 1940-08-09 | 1944-12-20 | J M Voith Fa | Suction press for paper machines with smooth cylinder |
| US3627630A (en) † | 1969-12-04 | 1971-12-14 | Beloit Corp | Method of flash drying pulp |
| SE374150B (en) * | 1970-03-17 | 1975-02-24 | Ahlstroem Oy | |
| FI79731C (en) * | 1980-12-18 | 1990-02-12 | Beloit Corp | Press section of a paper machine |
| US4483745A (en) * | 1982-09-29 | 1984-11-20 | Beloit Corporation | Method and apparatus of sheet transfer using a nonporous smooth surfaced belt |
| FI64823C (en) † | 1982-11-02 | 1984-01-10 | Valmet Oy | OEVERFOERINGSANORDNING FOER LEDANDE AV PAPPERSBANAN FRAON PRESSPARTIET I EN PAPPERSMASKIN TILL DESS TORKPARTI |
| US4729921A (en) † | 1984-10-19 | 1988-03-08 | E. I. Du Pont De Nemours And Company | High density para-aramid papers |
| EP0289477A3 (en) * | 1987-04-28 | 1989-03-08 | Valmet Paper Machinery Inc. | Method for hot-pressing of a paper web and a drying device for the implementation of the method |
| US4880502A (en) * | 1987-08-11 | 1989-11-14 | Beloit Corporation | Press drying apparatus with deflection control and blow box cooling |
| FI83895C (en) † | 1988-04-13 | 1991-09-10 | Valmet Paper Machinery Inc | Method and apparatus for press processing a paper web |
| US4874470A (en) * | 1988-10-04 | 1989-10-17 | Beloit Corporation | Papermaking press section and transfer arrangement to dryer section |
| FI93663C (en) * | 1990-06-06 | 1995-05-10 | Valmet Paper Machinery Inc | Method and apparatus in a press section of a paper machine provided with a separate press |
| DE4042480C2 (en) * | 1990-08-17 | 2000-02-10 | Voith Gmbh J M | Press section of a paper machine |
| DE4112355A1 (en) * | 1991-04-16 | 1992-10-22 | Escher Wyss Gmbh | PRESS RELEASE OF A PAPER MACHINE |
| DE9206340U1 (en) * | 1991-08-10 | 1992-08-13 | Sulzer-Escher Wyss GmbH, 7980 Ravensburg | Press section of a paper machine |
| DE4140879A1 (en) * | 1991-12-11 | 1993-06-17 | Voith Gmbh J M | PRESS RELEASE |
| EP0608534B1 (en) * | 1993-01-23 | 1997-04-02 | J.M. Voith GmbH | Wet press for a papermaking machine |
| DE4318036C1 (en) * | 1993-05-29 | 1994-07-28 | Voith Gmbh J M | Press unit of a paper machine for the production of tissue paper |
| DE4321402A1 (en) * | 1993-06-26 | 1993-12-02 | Voith Gmbh J M | Paper-making machine press section - has a smooth continuous surface as final unit to transfer web onwards in the prodn. of thin paper |
-
1994
- 1994-05-27 ES ES94917672T patent/ES2105720T3/en not_active Expired - Lifetime
- 1994-05-27 WO PCT/EP1994/001730 patent/WO1994028240A1/en active IP Right Grant
- 1994-05-27 US US08/374,656 patent/US5670023A/en not_active Expired - Fee Related
- 1994-05-27 EP EP94917672A patent/EP0652992B2/en not_active Expired - Lifetime
- 1994-05-27 DE DE59403546T patent/DE59403546D1/en not_active Expired - Fee Related
- 1994-05-27 BR BR9405408-8A patent/BR9405408A/en not_active Application Discontinuation
- 1994-05-27 JP JP7500237A patent/JPH08502104A/en active Pending
- 1994-05-27 CA CA002141292A patent/CA2141292A1/en not_active Abandoned
- 1994-05-27 AT AT94917672T patent/ATE156208T1/en not_active IP Right Cessation
-
1995
- 1995-01-27 FI FI950376A patent/FI950376A/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1381360A (en) * | 1972-12-12 | 1975-01-22 | Valmet Oy | Paper machine multi-roll press assemblies |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2105720T3 (en) | 1997-10-16 |
| EP0652992A1 (en) | 1995-05-17 |
| US5670023A (en) | 1997-09-23 |
| FI950376A0 (en) | 1995-01-27 |
| EP0652992B2 (en) | 2000-11-02 |
| ATE156208T1 (en) | 1997-08-15 |
| BR9405408A (en) | 1999-09-08 |
| WO1994028240A1 (en) | 1994-12-08 |
| CA2141292A1 (en) | 1994-12-08 |
| FI950376A (en) | 1995-01-27 |
| DE59403546D1 (en) | 1997-09-04 |
| JPH08502104A (en) | 1996-03-05 |
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