EP2868605B1 - Tear strip for cutting the paper web in an assembly for producing paper - Google Patents

Tear strip for cutting the paper web in an assembly for producing paper Download PDF

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Publication number
EP2868605B1
EP2868605B1 EP14450034.5A EP14450034A EP2868605B1 EP 2868605 B1 EP2868605 B1 EP 2868605B1 EP 14450034 A EP14450034 A EP 14450034A EP 2868605 B1 EP2868605 B1 EP 2868605B1
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EP
European Patent Office
Prior art keywords
paper
strip
tear strip
tear
width
Prior art date
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EP14450034.5A
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German (de)
French (fr)
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EP2868605A1 (en
Inventor
Klaus Bartelmuss
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Individual
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Individual
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/547—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a wire-like cutting member
    • B26D1/5475—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a wire-like cutting member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/02—Tearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound web roll
    • B65H19/262—Cutting-off the web running to the wound web roll using a thin or filamentary material which is wound on the new roll
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/006—Cutting the edges of the paper-web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/84—Paper-making machines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet

Definitions

  • the subject invention relates to a paper tear strip for separating a moving from a plant for the production of paper forth paper web, which is wound on drums, thereby enabling their winding onto an empty drum.
  • a tear tape is used, which winds helically on the empty drum, wherein at the same time the paper web is separated along a helical line and the paper web is wound on the empty drum.
  • it is made from paper.
  • Such devices for separating a paper web are for example from the US4711404 , from the WO86 / 00282 and from the EP708049 B1
  • a tear tape is passed from one side of the paper web through a guide channel to the other side thereof.
  • the guide channel is formed on its side facing the paper web with an opening.
  • the tear strip In known such guide channels, in which the tear strip is moved from one side of the paper web to the other side of the paper web, it must be ensured that the tear strip remains in the guide channel during movement to the other side of the paper web and not through the paper web facing opening beyond the guide channel.
  • the guide channel for the tear strip is formed on the web facing the paper web with two mutually facing strips, whereby the width of the opening is less than the width of the tear strip.
  • the tear strip consists of several side by side and interconnected paper cords.
  • the tear tape consists of a folded paper strip.
  • a tear tape which has a middle band part, which paper strip and the like. contains, project from which lateral band parts.
  • the middle band part has more than ten times the width of the lateral band parts or they have a very small width.
  • they are formed with a cross-section enlarging away from the side edges.
  • the lateral band parts are further formed with profilings, whereby they have a wave-shaped course, by which the cutting action of the tear strip is to be improved when separating a paper web.
  • the present invention is therefore based on the object to provide a tear strip, which ensures that it is not damaged when pulling out of the guide channel through the paper web facing opening of the guide channel to cause the separation of the paper tape.
  • the tear strip in cross section has a middle band part and two side band parts, wherein the middle Band part opposite the lateral band parts has at least 1.5 times the thickness and wherein its width is approximately equal to half the width of the tear strip or has a smaller width of at least 1/6 of the width of the tear strip.
  • the middle band part is formed with a plurality of juxtaposed paper cords or with a plurality of paper layers.
  • the tear strip can be formed by an at least single-ply paper tape, which is provided in its central region with a support of paper cords or at least one paper layer.
  • the tear strip is formed by an at least two-ply paper tape, which is provided in its central region with an insert made of paper cords or at least one paper layer.
  • the thickness of the pads or inserts in the middle band part from paper cords or from at least one paper layer decreases from the middle area to the lateral areas.
  • the paper cords or the at least one paper layer can be glued to the at least single-ply paper tape.
  • the middle band portion is formed with a substantially thicker paper tape which rests on a paper sheet at least one ply or is wrapped by a paper tape at least two-ply.
  • the middle band part can also have a width which is at least 1/5, 1/4 or 1/3 of the width of the tear band equal.
  • An installation for winding a paper web which is located at the end of a paper-making installation, has a first drum, on which the paper web arriving from the paper-making installation is wound up.
  • a further empty drum is provided, on which the paper web is then wound up as soon as the first drum has reached the desired winding diameter.
  • the paper web In order to be able to move from the first drum to the empty drum during the winding process, the paper web must be separated.
  • This purpose is served by a tear strip whose free end is conveyed from one side of the paper web through a guide channel located in a guide rail to the other side of the paper web.
  • the leading end of the tear tape is attached to the rotating empty drum by means of an adhesive coating thereon, whereby it is pulled out of the guide channel through an opening facing the paper web and spirally wound on the empty drum.
  • the paper web is separated helically and the front tear edge of the paper web is brought to the empty drum for conditioning, whereby the paper web is wound on the empty drum.
  • the full drum is removed and in its place the other drum on which the paper web is wound up, arranged.
  • the paper-making equipment can be fed at a speed of e.g. 25 m / sec fed paper web are continuously wound on drums. Once a drum has reached the intended winding diameter, the paper web is separated, the transition of the winding takes place on an empty further drum and the full drum is removed.
  • FIG.1 a tear strip 1 and a guide rail 2 are shown with a guide channel 20.
  • the guide rail 2 is located in a system for changing the drums, on which a paper web is wound up.
  • the tear tape 1 is shifted through the guide channel 20 from one side of a paper web to the other side.
  • the tear tape 1 has a middle band part 11, which is relatively stiff, and two lateral band parts 12, which are relatively elastic.
  • the guide channel 20 has a central region 21, the clear width of the width of the tear strip 1 is approximately equal.
  • the guide rail 2 On its side facing the paper web, the guide rail 2 is formed with an opening 22, which is located between two mutually facing strips 23, whereby the width of the paper web facing opening 22 is less than the width of the tear strip 1.
  • the guide rail 2 is further formed with a groove 24 which serves to receive a befindliches at the front end of the tear strip 1 adhesive element, by which the free end of the tear strip 1 is fixed to the rotating empty drum for the separation process of the paper web.
  • the tear strip 1 can be pulled out of the guide channel 20 for opening the paper web through the opening 22, without it being damaged thereby.
  • the tear strips 1 according to the FIG.2A and FIG.2B differ from the tear tape 1 according to FIG.2 in that there are only four or three paper cords 14 in its middle band part 11, as a result of which the middle band parts 11 have correspondingly smaller widths.
  • the middle hinge parts 11 have the required high tensile strength, whereas the respective two lateral hinge parts 12 have a high elasticity.
  • Tear tape 1 shown consists of a single-ply paper tape 15, on the middle band part 11, five juxtaposed paper cords 14 are located.
  • This in 3a illustrated tear strip 1 consists of a single-ply paper tape 15, in the middle band portion 11, a substantially thicker paper tape 16 is located, whose width is approximately equal to the width of five paper cords 14.
  • This in Figure 3B Tear tape 1 shown consists of a single-ply paper tape 15 which is formed in its middle band portion 11 with three stacked paper bands 17, the widths of which shrink from the paper tape 15 away.
  • FIG.4 illustrated tear strip 1 consists of a two-ply folded paper tape 13, in the middle band portion 11, a substantially thicker paper tape 16 is located, which is enclosed by the folded paper tape 13.
  • This in 4a shown tear strip 1 consists of a two-ply folded paper tape 13, in the middle band part 11, three stacked paper bands 17a are located, which are enclosed by the paper tape 13, wherein the middle paper tape has a slightly larger width than the other two paper bands.
  • This in 4B illustrated tear strip 1 consists of a two-ply folded paper tape 13, in the middle band part 11, a twice folded and thus three-ply paper tape 18 is located, which is enclosed by the paper tape 13.
  • Tear tape 1 shown consists of a single-layer paper tape 15, in the middle band part 11 there are seven paper cords 14a, which have from the center outwardly decreasing diameter.
  • This in 5a illustrated tear strip 1 consists of a two-ply paper tape 13, in the middle band portion 11 is a much stronger Paper tape 16a is located, the thickness of which is reduced from the center to the outside and which is enclosed by the paper tape 13.
  • This in 5 b Tear tape 1 shown consists of a two-ply, folded paper tape 13 which is formed in its middle band portion 11 with seven paper cords 14a, which have from the center outwardly decreasing diameter and which are enclosed by the paper tape 13.
  • All of these tear bands 1 have in cross-section a middle band part 11 and two lateral band parts 12, wherein the middle band part 11 at least 1.5 times the thickness, preferably 2 times the thickness and according to the embodiments 5 times the thickness of the lateral band parts 12 and the middle band portion 11 has approximately half the width of the entire tear strip.
  • the tear tape 1 can also be formed with a middle band part 11, which has 1/6, 1/5, 1/4 and 1/3 of the width of the entire tear strip 1.
  • the tear strips 1 Due to the reinforced middle strip parts 11, the tear strips 1 have the tear strength which is required for the separation of the paper web.
  • the lateral band parts 12 have a substantially smaller thickness, they fulfill the function that the tear band 1 does not pass out of the opening 22 through the opening 22 on its movement in the guide channel 20 to the other side of the paper web.
  • the lateral band parts 12 are so elastic that the tear strip 1, as soon as it is pulled out of the guide channel 20 through the paper web-facing opening 22 through it, not damaged and in particular is not separated.
  • FIG.6 the individual phases of the movement of the tear strip 1 from the located in the guide rail 2 guide channel 20 are also shown, from which it can be seen that the tear strip 1 by means of the lateral band portions 12 during its promotion to the other side of the paper web out in the central region 21 of the Guide channel 20 is held and that it due to the elasticity of the two side band portions 12 for the separation the paper web is pulled out through the opening 22 of the guide channel 20 without being damaged thereby. This also avoids that the guide channel 20 is clogged by separated paper parts.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)

Description

Die gegenständliche Erfindung betrifft ein aus Papier bestehendes Reißband zum Auftrennen einer sich von einer Anlage zur Erzeugung von Papier her bewegenden Papierbahn, welche auf Trommeln aufgewickelt wird, um hierdurch deren Aufwicklung auf eine leere Trommel zu ermöglichen.The subject invention relates to a paper tear strip for separating a moving from a plant for the production of paper forth paper web, which is wound on drums, thereby enabling their winding onto an empty drum.

Bei der Aufwicklung einer in einer Anlage zur Herstellung von Papier gefertigten Papierbahn auf Trommeln besteht das Erfordernis, sobald eine Trommel einen vorgegebenen Wickeldurchmesser erreicht hat, die Papierbahn aufzutrennen, um die Aufwicklung der Papierbahn auf einer leeren Trommel fortsetzen zu können. Hierfür wird ein Reißband verwendet, welches sich auf der leeren Trommel schraubenlinienförmig aufwickelt, wobei gleichzeitig die Papierbahn längs einer schraubenförmigen Linie aufgetrennt und die Papierbahn auf der leeren Trommel aufgewickelt wird. Um das Reißband zugleich mit den durch den Trennvorgang beschädigten Teilen der Papierbahn einer Wiederverwertung zuführen zu können, wird dieses aus Papier hergestellt.When winding a paper web produced in a plant for the production of paper on drums, the requirement, as soon as a drum has reached a predetermined winding diameter, is to separate the paper web in order to be able to continue the winding of the paper web on an empty drum. For this purpose, a tear tape is used, which winds helically on the empty drum, wherein at the same time the paper web is separated along a helical line and the paper web is wound on the empty drum. In order to be able to recycle the tear strip at the same time as the parts of the paper web damaged by the separating process, it is made from paper.

Derartige Vorrichtungen zum Auftrennen einer Papierbahn sind z.B. aus der US4711404 , aus der WO86/00282 und aus der EP708049 B1 bekannt Bei diesen Vorrichtungen wird ein Reißband von einer Seite der Papierbahn durch einen Führungskanal hindurch zu deren anderen Seite hindurchbewegt. Der Führungskanal ist an seiner der Papierbahn zugewandten Seite mit einer Öffnung ausgebildet. Sobald die Papierbahn aufgetrennt werden soll, wird das freie Ende des Reißbandes an der rotierenden, leeren Trommel befestigt, wodurch das Reißband aus dem Führungskanal durch die der Papierbahn zugewandte Öffnung hinausgezogen wird und die Papierbahn längs einer Schraubenlinie aufgetrennt und auf die leere Trommel aufgewickelt wird.Such devices for separating a paper web are for example from the US4711404 , from the WO86 / 00282 and from the EP708049 B1 In these devices, a tear tape is passed from one side of the paper web through a guide channel to the other side thereof. The guide channel is formed on its side facing the paper web with an opening. Once the paper web is to be separated, the free end of the tear tape is attached to the rotating, empty drum, whereby the tear tape is pulled out of the guide channel through the paper web facing opening and the paper web is separated along a helix and wound on the empty drum.

Bei bekannten derartigen Führungskanälen, in welchen das Reißband von der einen Seite der Papierbahn zur anderen Seite der Papierbahn bewegt wird, muss gewährleistet werden, dass das Reißband während der Bewegung zur anderen Seite der Papierbahn im Führungskanal verbleibt und nicht durch die der Papierbahn zugewandte Öffnung aus dem Führungskanal hinausgelangt. Bei der Vorrichtung gemäß der WO86/00282 wird dies dadurch bewirkt, dass der Führungskanal für das Reißband an der der Papierbahn zugewandten Öffnung mit zwei zueinander gerichteten Leisten ausgebildet ist, wodurch die Breite der Öffnung geringer ist als die Breite des Reißbandes.
Bei dieser bekannten Vorrichtung besteht das Reißband aus mehreren nebeneinander und miteinander verbundenen Papierschnüren. Gemäß der AT402912 B besteht das Reißband aus einem mehrfach gefalteten Papierstreifen.In known such guide channels, in which the tear strip is moved from one side of the paper web to the other side of the paper web, it must be ensured that the tear strip remains in the guide channel during movement to the other side of the paper web and not through the paper web facing opening beyond the guide channel. In the device according to the WO86 / 00282 This is achieved by the fact that the guide channel for the tear strip is formed on the web facing the paper web with two mutually facing strips, whereby the width of the opening is less than the width of the tear strip.
In this known device, the tear strip consists of several side by side and interconnected paper cords. According to the AT402912 B The tear tape consists of a folded paper strip.

Da die bisher bekannten Reißbänder über ihre gesamte Breite eine zumindest angenähert gleichmäßige Dicke und Festigkeit aufweisen, besteht, sobald das Reißband für das Auftrennen der Papierbahn aus dem Führungskanal hinausgezogen wird, die Gefahr, dass das Reißband in seinen seitlichen Bereichen beschädigt wird. Insbesondere besteht die Gefahr, dass seitliche Bereiche des Reißbandes abgerissen werden, wodurch das Reißband maßgeblich geschwächt wird und das Reißband bei der Bewegung aus dem Führungskanal hinaus bzw. in der Folge reißt, wodurch der Vorgang des Aufwickelns der Papierbahn auf eine leere Trommel unterbrochen werden muss. Zudem können im Führungskanal Reste des Reißbandes verbleiben, wodurch die Gefahr einer Verstopfung des Führungskanals besteht.Since the previously known tear strips have an at least approximately uniform thickness and strength over their entire width, as soon as the tear strip for the separation of the paper web is pulled out of the guide channel, the risk that the tear strip is damaged in its lateral areas. In particular, there is the danger that lateral areas of the tear strip are torn off, whereby the tear strip is considerably weakened and the tear strip in the movement of the guide channel out or in consequence tears, whereby the process of winding the paper web must be interrupted on an empty drum , In addition, residues of the tear strip may remain in the guide channel, whereby there is a risk of clogging of the guide channel.

Aus der US 2005/0008817 A1 ist weiters ein Reißband bekannt, welches einen mittleren Bandteil, welcher Papierstreifen u.dgl. enthält, aufweist, von welchem seitliche Bandteile abragen. Dabei weist der mittlere Bandteil mehr als die zehnfache Breite der seitlichen Bandteile auf bzw. weisen diese eine sehr geringe Breite auf. Zudem sind sie mit einem sich von den Seitenrändern weg vergrößernden Querschnitt ausgebildet. Die seitlichen Bandteile sind weiters mit Profilierungen ausgebildet, wodurch sie einen wellenförmigen Verlauf aufweisen, durch welchen die Schneidwirkung des Reißbandes beim Auftrennen einer Papierbahn verbessert werden soll.From the US 2005/0008817 A1 Furthermore, a tear tape is known, which has a middle band part, which paper strip and the like. contains, project from which lateral band parts. In this case, the middle band part has more than ten times the width of the lateral band parts or they have a very small width. In addition, they are formed with a cross-section enlarging away from the side edges. The lateral band parts are further formed with profilings, whereby they have a wave-shaped course, by which the cutting action of the tear strip is to be improved when separating a paper web.

Der gegenständlichen Erfindung liegt somit die Aufgabe zugrunde, ein Reißband zu schaffen, bei welchem gewährleistet ist, dass es beim Hinausziehen aus dem Führungskanal durch die der Papierbahn zugewandte Öffnung des Führungskanals hindurch, um das Auftrennen des Papierbandes zu bewirken, nicht beschädigt wird. Dies wird erfindungsgemäß dadurch erzielt, dass das Reißband im Querschnitt einen mittleren Bandteil und zwei seitliche Bandteile aufweist, wobei der mittlere Bandteil gegenüber den seitlichen Bandteilen zumindest die 1,5-fache Dicke aufweist und wobei dessen Breite angenähert der halben Breite des Reißbandes gleich ist oder eine geringere Breite von zumindest 1/6 der Breite des Reißbandes aufweist.The present invention is therefore based on the object to provide a tear strip, which ensures that it is not damaged when pulling out of the guide channel through the paper web facing opening of the guide channel to cause the separation of the paper tape. This is inventively achieved in that the tear strip in cross section has a middle band part and two side band parts, wherein the middle Band part opposite the lateral band parts has at least 1.5 times the thickness and wherein its width is approximately equal to half the width of the tear strip or has a smaller width of at least 1/6 of the width of the tear strip.

Vorzugsweise ist der mittlere Bandteil mit mehreren nebeneinander liegenden Papierschnüren bzw. mit mehreren Papierschichten ausgebildet. Insbesondere kann das Reißband durch ein mindestens einlagiges Papierband gebildet sein, welches in seinem mittleren Bereich mit einer Auflage aus Papierschnüren bzw. mindestens einer Papierschicht versehen ist.
Vorzugsweise ist das Reißband durch ein mindestens zweilagiges Papierband gebildet, welches in seinem mittleren Bereich mit einer Einlage aus Papierschnüren bzw. mindestens einer Papierschicht versehen ist.Preferably, the middle band part is formed with a plurality of juxtaposed paper cords or with a plurality of paper layers. In particular, the tear strip can be formed by an at least single-ply paper tape, which is provided in its central region with a support of paper cords or at least one paper layer.
Preferably, the tear strip is formed by an at least two-ply paper tape, which is provided in its central region with an insert made of paper cords or at least one paper layer.

Gemäß einer weiteren bevorzugten Ausführungsform verkleinert sich die Dicke der im mittleren Bandteil befindlichen Auflagen bzw. Einlagen aus Papierschnüren bzw. aus mindestens einer Papierschicht vom mittleren Bereich zu den seitlichen Bereichen hin. Weiters können die Papierschnüre bzw. die mindestens eine Papierschicht mit dem mindestens einlagigen Papierband verklebt sein.In accordance with a further preferred embodiment, the thickness of the pads or inserts in the middle band part from paper cords or from at least one paper layer decreases from the middle area to the lateral areas. Furthermore, the paper cords or the at least one paper layer can be glued to the at least single-ply paper tape.

Vorzugsweise ist der mittlere Bandteil mit einem wesentlich dickeren Papierband ausgebildet, welches auf einem mindestens einlagigen Papierband aufliegt oder von einem mindestens zweilagigen Papierband umhüllt ist.Preferably, the middle band portion is formed with a substantially thicker paper tape which rests on a paper sheet at least one ply or is wrapped by a paper tape at least two-ply.

Der mittlere Bandteil kann auch eine Breite aufweisen, welche zumindest 1/5, 1/4 bzw. 1/3 der Breite des Reißbandes gleich ist.The middle band part can also have a width which is at least 1/5, 1/4 or 1/3 of the width of the tear band equal.

Der Gegenstand der Erfindung ist nachstehend anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:

FIG.1
eine bei einer Vorrichtung zum Aufwickeln einer Papierbahn und zum Wechseln der Trommeln befindliche Führungsschiene mit einem Führungskanal sowie ein erfindungsgemäßes Reißband, welches in den Führungskanal eingeschoben wird, in axonometrischer und teilweise abgebrochener Darstellung,
FIG.1A
die Führungsschiene, in welche das Reißband eingeschoben ist, in axonometrischer und teilweise abgebrochener Darstellung,
  • FIG.2, FIG.2A, FIG.2B,
  • FIg.3, FIG.3A, FIG.3B,
  • FIG.4, FIG.4A, FIG.4B,
  • FIG.5, FIG.5A, FIG.5B jeweils drei weitere Ausführungsformen eines erfindungsgemäßen Reißbandes, in axonometrischer und teilweise abgebrochener Darstellung, und
  • FIG.6 den Bewegungsablauf eines erfindungsgemäßen Reißbandes bei dessen Bewegung aus dem Führungskanal hinaus, jeweils in Stirnansicht der Führungsschiene.
The object of the invention is explained below with reference to exemplary embodiments illustrated in the drawing. Show it:
FIG.1
a guide rail located in a device for winding a paper web and for changing the drums with a guide channel and an inventive tear strip which is inserted into the guide channel, in axonometric and partially broken representation,
1A
the guide rail, in which the tear tape is inserted, in axonometric and partially broken representation,
  • FIG.2, FIG.2A, FIG.2B .
  • FIg.3, FIG.3A, FIG.3B .
  • FIG.4, FIG.4A, FIG.4B .
  • FIG.5, FIG.5A, FIG.5B three further embodiments of a tear strip according to the invention, in axonometric and partially broken representation, and
  • FIG.6 the movement of a tear strip according to the invention in its movement out of the guide channel, in each case in front view of the guide rail.

Eine Anlage zum Aufwickeln einer Papierbahn, welche sich am Ende einer Papiererzeugungsanlage befindet, weist eine erste Trommel auf, auf welche die von der Papiererzeugungsanlage einlangende Papierbahn aufgewickelt wird. Zudem ist eine weitere leere Trommel vorgesehen, auf welche die Papierbahn dann aufgewickelt wird, sobald die erste Trommel den angestrebten Wickeldurchmesser erreicht hat. Um beim Vorgang des Aufwickelns von der ersten Trommel auf die leere Trommel übergehen zu können, muss die Papierbahn, aufgetrennt werden.An installation for winding a paper web, which is located at the end of a paper-making installation, has a first drum, on which the paper web arriving from the paper-making installation is wound up. In addition, a further empty drum is provided, on which the paper web is then wound up as soon as the first drum has reached the desired winding diameter. In order to be able to move from the first drum to the empty drum during the winding process, the paper web must be separated.

Hierzu dient ein Reißband, dessen freies Ende von der einen Seite der Papierbahn durch einen in einer Führungsschiene befindlichen Führungskanal hindurch auf die andere Seite der Papierbahn gefördert wird. Sobald die Papierbahn aufgetrennt werden soll, wird das vordere Ende des Reißbandes mittels einer auf diesem befindlichen Klebstoffbeschichtung an der rotierenden leeren Trommel befestigt, wodurch es aus dem Führungskanal durch eine der Papierbahn zugewandte Öffnung hinausgezogen wird und es sich auf der leeren Trommel schraubenlinienförmig aufwickelt. Hierdurch wird die Papierbahn schraubenlinienförmig aufgetrennt und wird die vordere Reißkante der Papierbahn an die leere Trommel zur Anlage gebracht, wodurch die Papierbahn auf die leere Trommel aufgewickelt wird. Hierauf wird die volle Trommel entfernt und wird an deren Stelle die weitere Trommel, auf welche die Papierbahn aufgewickelt wird, angeordnet.This purpose is served by a tear strip whose free end is conveyed from one side of the paper web through a guide channel located in a guide rail to the other side of the paper web. Once the paper web is to be cut, the leading end of the tear tape is attached to the rotating empty drum by means of an adhesive coating thereon, whereby it is pulled out of the guide channel through an opening facing the paper web and spirally wound on the empty drum. As a result, the paper web is separated helically and the front tear edge of the paper web is brought to the empty drum for conditioning, whereby the paper web is wound on the empty drum. Then the full drum is removed and in its place the other drum on which the paper web is wound up, arranged.

Mit einer derartigen Anlage kann demnach die von der Papiererzeugungsanlage mit einer Geschwindigkeit von z.B. 25 m/sec zugeführte Papierbahn kontinuierlich auf Trommeln aufgewickelt werden. Sobald eine Trommel den vorgesehenen Wickeldurchmesser erreicht hat, wird die Papierbahn aufgetrennt, erfolgt der Übergang des Aufwickelns auf eine leere weitere Trommel und wird die volle Trommel abtransportiert.Thus, with such a plant, the paper-making equipment can be fed at a speed of e.g. 25 m / sec fed paper web are continuously wound on drums. Once a drum has reached the intended winding diameter, the paper web is separated, the transition of the winding takes place on an empty further drum and the full drum is removed.

In FIG.1 sind ein Reißband 1 und eine Führungsschiene 2 mit einem Führungskanal 20 dargestellt. Die Führungsschiene 2 befindet sich in einer Anlage zum Wechseln der Trommeln, auf welche eine Papierbahn aufgewickelt wird. Das Reißband 1 wird durch den Führungskanal 20 hindurch von der einen Seite einer Papierbahn zur anderen Seite hin verschoben.In FIG.1 a tear strip 1 and a guide rail 2 are shown with a guide channel 20. The guide rail 2 is located in a system for changing the drums, on which a paper web is wound up. The tear tape 1 is shifted through the guide channel 20 from one side of a paper web to the other side.

In FIG.1A ist das Reißband in seiner in den Führungskanal 20 eingeschobenen Lage dargestellt.In 1A the tear strip is shown in its inserted into the guide channel 20 position.

Das Reißband 1 weist einen mittleren Bandteil 11 auf, welcher relativ steif ist, und zwei seitliche Bandteile 12, welche relativ elastisch sind. Der Führungskanal 20 weist einen mittleren Bereich 21 auf, dessen lichte Breite der Breite des Reißbandes 1 angenähert gleich ist. An seiner der Papierbahn zugewandten Seite ist die Führungsschiene 2 mit einer Öffnung 22 ausgebildet, welche sich zwischen zwei zueinander gerichteten Leisten 23 befindet, wodurch die Breite der der Papierbahn zugewandten Öffnung 22 geringer ist als die Breite des Reißbandes 1. Unterhalb des mittleren Bereichs 21 des Führungskanals 20 ist die Führungsschiene 2 weiters mit einer Nut 24 ausgebildet, welche dazu dient, ein am vorderen Ende des Reißbandes 1 befindliches Klebeelement aufzunehmen, durch welches das freie Ende des Reißbandes 1 für den Trennvorgang der Papierbahn an der rotierenden leeren Trommel befestigt wird.The tear tape 1 has a middle band part 11, which is relatively stiff, and two lateral band parts 12, which are relatively elastic. The guide channel 20 has a central region 21, the clear width of the width of the tear strip 1 is approximately equal. On its side facing the paper web, the guide rail 2 is formed with an opening 22, which is located between two mutually facing strips 23, whereby the width of the paper web facing opening 22 is less than the width of the tear strip 1. Below the central region 21 of Guide channel 20, the guide rail 2 is further formed with a groove 24 which serves to receive a befindliches at the front end of the tear strip 1 adhesive element, by which the free end of the tear strip 1 is fixed to the rotating empty drum for the separation process of the paper web.

Da die beiden seitlichen Bandteile 12 des Reißbandes 1 wesentlich elastischer sind als der mittlere Bandteil 11 des Reißbandes 1 kann das Reißband 1 zum Auftrennen der Papierbahn durch die Öffnung 22 aus dem Führungskanal 20 hinausgezogen werden, ohne dass es hierdurch beschädigt wird.Since the two lateral band parts 12 of the tear strip 1 are substantially more elastic than the middle band part 11 of the tear strip 1, the tear strip 1 can be pulled out of the guide channel 20 for opening the paper web through the opening 22, without it being damaged thereby.

Nachstehend sind mehrere Ausführungsformen des erfindungsgemäßen Reißbandes 1 erläutert:

  • Das in FIG.2 dargestellte Reißband 1 besteht aus einem einmal gefalteten und damit zweilagigen Papierband 13, in dessen mittlerem Bereich 11 sich sich fünf Papierschnüre 14 befinden, welche durch die beiden Lagen des Papierbandes 13 umhüllt sind und deren Durchmesser etwa fünfmal so groß ist wie die Dicke des zweilagigen Papierbandes 13. Die Breite des mittleren Bandteiles 11 ist etwas größer als die doppelte Breite jedes der beiden seitlichen Bandteile 12.
Several embodiments of the tear strip 1 according to the invention are explained below:
  • This in FIG.2 shown tear strip 1 consists of a once folded and thus two-ply paper tape 13, in the central region 11 there are five paper cords 14, which are enveloped by the two layers of the paper tape 13 and whose diameter is about five times as large as the thickness of the two-ply paper tape 13. The width of the middle band portion 11 is slightly larger than twice the width of each of the two side band portions 12th

Die Reißbänder 1 gemäß den FIG.2A und FIG.2B unterscheiden sich vom Reißband 1 gemäß FIG.2 dadurch, dass sich in deren mittlerem Bandteil 11 nur vier bzw. drei Papierschnüre 14 befinden, wodurch die mittleren Bandteile 11 entsprechend geringere Breiten aufweisen.The tear strips 1 according to the FIG.2A and FIG.2B differ from the tear tape 1 according to FIG.2 in that there are only four or three paper cords 14 in its middle band part 11, as a result of which the middle band parts 11 have correspondingly smaller widths.

Bei sämtlichen diesen Reißbändern 1 weisen die mittleren Bandteile 11 die erforderliche hohe Reißfestigkeit auf, wogegen den jeweils beiden seitlichen Bandteilen 12 eine hohe Elastizität zukommt.In all of these tearing tapes 1, the middle hinge parts 11 have the required high tensile strength, whereas the respective two lateral hinge parts 12 have a high elasticity.

Das in FIG.3 dargestellte Reißband 1 besteht aus einem einlagigen Papierband 15, auf dessen mittlerem Bandteil 11 sich fünf nebeneinander angeordnete Papierschnüre 14 befinden.
Das in FIG.3A dargestellte Reißband 1 besteht aus einem einlagigen Papierband 15, in dessen mittlerem Bandteil 11 sich ein wesentlich dickeres Papierband 16 befindet, dessen Breite angenähert der Breite von fünf Papierschnüren 14 gleich ist.
Das in FIG.3B dargestellte Reißband 1 besteht aus einem einlagigen Papierband 15, welches in seinem mittleren Bandteil 11 mit drei übereinander geschichteten Papierbändern 17 ausgebildet ist, deren Breiten sich vom Papierband 15 weg verkleinern.This in FIG.3 Tear tape 1 shown consists of a single-ply paper tape 15, on the middle band part 11, five juxtaposed paper cords 14 are located.
This in 3a illustrated tear strip 1 consists of a single-ply paper tape 15, in the middle band portion 11, a substantially thicker paper tape 16 is located, whose width is approximately equal to the width of five paper cords 14.
This in Figure 3B Tear tape 1 shown consists of a single-ply paper tape 15 which is formed in its middle band portion 11 with three stacked paper bands 17, the widths of which shrink from the paper tape 15 away.

Das in FIG.4 dargestellte Reißband 1 besteht aus einem zweilagigen, gefalteten Papierband 13, in dessen mittlerem Bandteil 11 sich ein wesentlich dickeres Papierband 16 befindet, welches vom gefalteten Papierband 13 umschlossen ist.
Das in FIG.4A dargestellte Reißband 1 besteht aus einem zweilagigen, gefaltenen Papierband 13, in dessen mittlerem Bandteil 11 sich drei aufeinander geschichtete Papierbänder 17a befinden, welche vom Papierband 13 umschlossen sind, wobei das mittlere Papierband eine etwas größere Breite als die beiden anderen Papierbänder aufweist.
Das in FIG.4B dargestellte Reißband 1 besteht aus einem zweilagigen, gefalteten Papierband 13, in dessen mittlerem Bandteil 11 sich ein zweimal gefaltetes und somit dreischichtiges Papierband 18 befindet, welches vom Papierband 13 umschlossen ist.This in FIG.4 illustrated tear strip 1 consists of a two-ply folded paper tape 13, in the middle band portion 11, a substantially thicker paper tape 16 is located, which is enclosed by the folded paper tape 13.
This in 4a shown tear strip 1 consists of a two-ply folded paper tape 13, in the middle band part 11, three stacked paper bands 17a are located, which are enclosed by the paper tape 13, wherein the middle paper tape has a slightly larger width than the other two paper bands.
This in 4B illustrated tear strip 1 consists of a two-ply folded paper tape 13, in the middle band part 11, a twice folded and thus three-ply paper tape 18 is located, which is enclosed by the paper tape 13.

Das in FIG.5 dargestellte Reißband 1 besteht aus einem einschichtigen Papierband 15, in dessen mittlerem Bandteil 11 sich sieben Papierschnüre 14a befinden, welche sich von der Mitte nach außen hin verkleinernde Durchmesser aufweisen. Das in FIG.5A dargestellte Reißband 1 besteht aus einem zweischichtigen Papierband 13, in dessen mittlerem Bandteil 11 sich ein wesentlich stärkeres Papierband 16a befindet, dessen Dicke sich von der Mitte nach außen hin verkleinert und welches vom Papierband 13 umschlossen ist.
Das in FIG.5B dargestellte Reißband 1 besteht aus einem zweilagigen, gefalteten Papierband 13, welches in seinem mittleren Bandteil 11 mit sieben Papierschnüren 14a ausgebildet ist, welche von der Mitte nach außen hin sich verkleinernde Durchmesser aufweisen und welche vom Papierband 13 umschlossen sind.This in FIG.5 Tear tape 1 shown consists of a single-layer paper tape 15, in the middle band part 11 there are seven paper cords 14a, which have from the center outwardly decreasing diameter. This in 5a illustrated tear strip 1 consists of a two-ply paper tape 13, in the middle band portion 11 is a much stronger Paper tape 16a is located, the thickness of which is reduced from the center to the outside and which is enclosed by the paper tape 13.
This in 5 b Tear tape 1 shown consists of a two-ply, folded paper tape 13 which is formed in its middle band portion 11 with seven paper cords 14a, which have from the center outwardly decreasing diameter and which are enclosed by the paper tape 13.

Bei allen dargestellten Reißbändern 1 sind die einzelnen Bestandteile an den aneinander liegenden Flächen zumindest teilweise verklebt.In all tear strips 1 shown, the individual components are adhered to the adjacent surfaces at least partially.

Alle diese Reißbänder 1 weisen im Querschnitt einen mittleren Bandteil 11 und zwei seitliche Bandteile 12 auf, wobei der mittlere Bandteil 11 mindestens die 1,5-fache Dicke, vorzugsweise die 2-fache Dicke sowie gemäß den Ausführungsbeispielen die 5-fache Dicke der seitlichen Bandteile 12 und der mittlere Bandteil 11 angenähert die halbe Breite des gesamten Reißbandes aufweist.
Das Reißband 1 kann auch mit einem mittleren Bandteil 11 ausgebildet sein, der 1/6, 1/5, 1/4 und 1/3 der Breite des gesamten Reißbandes 1 aufweist.All of these tear bands 1 have in cross-section a middle band part 11 and two lateral band parts 12, wherein the middle band part 11 at least 1.5 times the thickness, preferably 2 times the thickness and according to the embodiments 5 times the thickness of the lateral band parts 12 and the middle band portion 11 has approximately half the width of the entire tear strip.
The tear tape 1 can also be formed with a middle band part 11, which has 1/6, 1/5, 1/4 and 1/3 of the width of the entire tear strip 1.

Aufgrund der verstärkten mittleren Bandteile 11 weisen die Reißbänder 1 diejenige Reißfestigkeit auf, welche für das Auftrennen der Papierbahn erforderlich ist. Da die seitlichen Bandteile 12 eine demgegenüber wesentlich geringere Dicke aufweisen, erfüllen sie die Funktion, dass das Reißband 1 bei dessen Bewegung im Führungskanal 20 zur anderen Seite der Papierbahn hin aus diesem nicht durch die Öffnung 22 hinausgelangt. Die seitlichen Bandteile 12 sind jedoch so elastisch, dass das Reißband 1, sobald es aus dem Führungskanal 20 durch dessen der Papierbahn zugewandte Öffnung 22 hindurch hinausgezogen wird, nicht beschädigt und insbesondere nicht aufgetrennt wird.Due to the reinforced middle strip parts 11, the tear strips 1 have the tear strength which is required for the separation of the paper web. On the other hand, since the lateral band parts 12 have a substantially smaller thickness, they fulfill the function that the tear band 1 does not pass out of the opening 22 through the opening 22 on its movement in the guide channel 20 to the other side of the paper web. However, the lateral band parts 12 are so elastic that the tear strip 1, as soon as it is pulled out of the guide channel 20 through the paper web-facing opening 22 through it, not damaged and in particular is not separated.

In FIG.6 sind die einzelnen Phasen der Bewegung des Reißbandes 1 aus dem in der Führungsschiene 2 befindlichen Führungskanal 20 hinaus dargestellt, woraus ersichtlich ist, dass das Reißband 1 mittels der seitlichen Bandteile 12 während dessen Förderung auf die andere Seite der Papierbahn hin, im mittleren Bereich 21 des Führungskanals 20 gehalten wird und dass es aufgrund der Elastizität der beiden seitlichen Bandteile 12 für das Auftrennen der Papierbahn durch die Öffnung 22 des Führungskanals 20 hinausgezogen wird, ohne dass es hierdurch beschädigt wird.
Hierdurch wird auch vermieden, dass der Führungskanal 20 durch abgetrennte Papierteile verstopft wird.In FIG.6 the individual phases of the movement of the tear strip 1 from the located in the guide rail 2 guide channel 20 are also shown, from which it can be seen that the tear strip 1 by means of the lateral band portions 12 during its promotion to the other side of the paper web out in the central region 21 of the Guide channel 20 is held and that it due to the elasticity of the two side band portions 12 for the separation the paper web is pulled out through the opening 22 of the guide channel 20 without being damaged thereby.
This also avoids that the guide channel 20 is clogged by separated paper parts.

Durch das Aufwickeln des Reißbandes auf der leeren Trommel, über welche in der Folge die Papierbahn aufgewickelt wird, werden in den folgenden Schichten der aufgewickelten Papierbahn partielle Verformungen, nämlich Druckmarkierungen, verursacht, aufgrund welcher diese Teile der Papierbahn in der Qualität mangelhaft sind und deshalb ausgeschieden werden müssen. Aus diesem Grund ist es vorteilhaft, die Übergänge vom mittleren Bandteil des Reißbandes zu den seitlichen Bandteilen möglichst flach auszubilden, wodurch dann in nur wenige Papierschichten aufgrund von Verformungen beiwirkte Markierungen verursacht werden.By winding the tear strip on the empty drum over which the paper web is subsequently wound up, partial deformations, namely pressure markings, are caused in the following layers of the wound paper web, as a result of which these parts of the paper web are defective in quality and are therefore rejected Need to become. For this reason, it is advantageous to make the transitions from the middle band part of the tear strip to the lateral band parts as flat as possible, which then causes markings which are only affected by deformations in only a few layers of paper.

Claims (8)

  1. A tear strip (1) consisting of paper for separating a paper web moving from a paper-producing installation, which paper web is wound on drums, in order thereby to enable winding thereof onto an empty drum, characterised in that the tear strip (1) has in cross-section a middle strip part (11) and two side strip parts (12), the middle strip part (1) exhibiting at least 1.5 times the thickness of the side strip parts (12) and having a width equal to approximately half the width of the tear strip (1) or having a smaller width of at least 1/6 of the width of the tear strip (1).
  2. A tear strip (1) according to claim 1, characterised in that the middle strip part (11) is provided with a plurality of paper cords (14, 14a) arranged side by side or with a plurality of paper layers (17, 17a).
  3. A tear strip (1) according to either one of claims 1 and 2, characterised in that it is formed by an at least single-ply paper strip (13, 15), which is provided in its middle region with an overlay consisting of paper cords (14, 14a) or at least one paper layer (17, 17a).
  4. A tear strip (1) according to any one of claims 1 to 3, characterised in that it is formed by an at least two-ply paper strip (13), which is provided in its middle region (11) with an insert consisting of paper cords (14, 14a) or at least one paper layer (17, 17a).
  5. A tear strip (1) according to any one of claims 2 to 4, characterised in that the thickness of the overlays or inserts of paper cords (14a) or of at least one paper layer (17) located in the middle strip part (11) diminishes from the middle region towards the side regions.
  6. A tear strip (1) according to any one of claims 2 to 5, characterised in that the paper cords (14, 14a) or the at least one paper layer (17, 17a) are adhesively bonded with the at least single-ply paper strip (13, 15).
  7. A tear strip according to claim 1, characterised in that the middle strip part (11) is provided with a significantly thicker paper strip (16, 16a), which rests on an at least single-ply paper strip (15) or is enclosed by an at least two-ply paper strip (13).
  8. A tear strip (1) according to any one of claims 1 to 7, characterised in that the middle strip part (11) has a width which is at least equal to 1/5, 1/4 or 1/3 of the width of the tear strip (1).
EP14450034.5A 2013-10-31 2014-06-16 Tear strip for cutting the paper web in an assembly for producing paper Active EP2868605B1 (en)

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ATA838/2013A AT514935B1 (en) 2013-10-31 2013-10-31 Tear tape for separating the paper web at a plant for the production of paper

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US (1) US9340928B2 (en)
EP (1) EP2868605B1 (en)
JP (1) JP6324852B2 (en)
CN (1) CN104594098A (en)
AT (1) AT514935B1 (en)
BR (1) BR102014022294B1 (en)
CA (1) CA2859884C (en)
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Publication number Priority date Publication date Assignee Title
AT517682B1 (en) * 2015-10-22 2017-04-15 Klaus Ing Bartelmuss Tear tape of paper for separating a paper web
FR3092514A1 (en) * 2019-02-12 2020-08-14 Uniflow Marine SELF-CUTTING FILM

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US3599888A (en) * 1969-09-08 1971-08-17 Inta Roto Inc Method of and means for severing web strip material upon completion of winding a roll and initiating winding of a new roll
WO1986000282A1 (en) 1984-06-20 1986-01-16 Rodriguez Peter A Apparatus and method for cutting and spooling a web of paper
SE447816B (en) 1985-05-02 1986-12-15 Valmet Kmw Ab CYLINDER ROLLER DEVICE FOR CUTTING OF PAPER COAT
US5046675A (en) * 1989-03-02 1991-09-10 Rodriguez Peter A System and method for cutting and spooling a web of paper
AT402399B (en) 1994-10-17 1997-04-25 Bartelmuss Klaus Ing DEVICE FOR DISCONNECTING A PAPER RAIL
AT402912B (en) 1995-02-15 1997-09-25 Bartelmuss Klaus Ing DEVICE FOR DIVIDING A MOVING PAPER RAIL
JP3457661B1 (en) * 2002-09-18 2003-10-20 志田紙工株式会社 Strip for separating paper web and method for producing the same
US20050008817A1 (en) * 2003-07-11 2005-01-13 Rodriguez Peter A. Roll of paperband
FI121008B (en) * 2005-02-03 2010-06-15 Metso Paper Inc Method of rolling change in rolling process of fibrous web and roller changing device
US20060275580A1 (en) * 2005-06-02 2006-12-07 Sandar Industries, Inc. Roll of paperband

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BR102014022294A2 (en) 2015-09-15
BR102014022294B1 (en) 2021-11-03
AT514935A4 (en) 2015-05-15
CN104594098A (en) 2015-05-06
EP2868605A1 (en) 2015-05-06
US9340928B2 (en) 2016-05-17
CA2859884C (en) 2018-02-20
AT514935B1 (en) 2015-05-15
CA2859884A1 (en) 2015-04-30
US20150118446A1 (en) 2015-04-30
JP2015086072A (en) 2015-05-07
ES2576193T3 (en) 2016-07-06

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