EP2341020A2 - Procédé d'enroulement d'une bande de matériau - Google Patents

Procédé d'enroulement d'une bande de matériau Download PDF

Info

Publication number
EP2341020A2
EP2341020A2 EP20100187883 EP10187883A EP2341020A2 EP 2341020 A2 EP2341020 A2 EP 2341020A2 EP 20100187883 EP20100187883 EP 20100187883 EP 10187883 A EP10187883 A EP 10187883A EP 2341020 A2 EP2341020 A2 EP 2341020A2
Authority
EP
European Patent Office
Prior art keywords
roller
winding
controlled
regulated
freedom
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.)
Ceased
Application number
EP20100187883
Other languages
German (de)
English (en)
Other versions
EP2341020A3 (fr
Inventor
Dirk Cramer
Rolf Van Haag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2341020A2 publication Critical patent/EP2341020A2/fr
Publication of EP2341020A3 publication Critical patent/EP2341020A3/fr
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/20—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/40—Shafts, cylinders, drums, spindles
    • B65H2404/43—Rider roll construction
    • B65H2404/434—Driven rider roll arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/50—Vibrations; Oscillations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/50—Diminishing, minimizing or reducing
    • B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
    • B65H2601/524—Vibration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/50—Diminishing, minimizing or reducing
    • B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
    • B65H2601/524—Vibration
    • B65H2601/5242—Vibration by using mass damper

Definitions

  • the invention relates to a method for winding a material web, in particular a paper or board web, by means of a roll winding device on at least one winding core, preferably a winding tube to a winding roll with support at least one, with the winding roll a nip-forming roll, wherein the roll winding device at least one electronic means for compensating vibrations of the at least one roller and / or the winding roll is equipped, wherein the at least one roller is driven by at least one drive motor to a rotational degree of freedom.
  • Paper webs are produced in relatively large widths of up to more than 11 m in a paper machine.
  • the production is almost endless.
  • the machine direction of the paper machine defines the longitudinal direction for all machines and devices located in the paper factory and the transverse direction perpendicular thereto in the horizontal plane.
  • the longitudinal direction is referred to as the X direction
  • the transverse direction as the Y direction
  • the vertical direction perpendicular to a vertical plane defined by these two directions are referred to as the Z direction.
  • the paper web produced is wound in full width onto a winding core. This winding core is replaced cyclically, usually during production.
  • the resulting web width winding roll is usually used as a mother roll or full tambour designated.
  • the paper web wound on a mother roll has to be cut into several parallel partial webs whose widths are suitable for the respective later user. These widths can vary greatly from case to case, so that the division of the paper web is usually made according to an individually definable pattern.
  • the partial webs are then wound into winding rolls, which are called Operabahn- or finished rolling and are issued together as a so-called roll throw.
  • the pattern can be changed from roll throw to roll throw.
  • a roll cutting device essentially consists of a unwinding device, a cutting section and a roll-up device, wherein the cutting section has a number of mostly disk-shaped cutters adapted to the possible pitches.
  • the person skilled in the art distinguishes between two basic types of construction, namely the support roller and the back-up roller.
  • Characteristic of the carrier roller type is a retractor, in which the entire roll throw in a winding bed, which usually consists of two support rollers, is wound on winding tubes.
  • the winding tubes of the roller throw can be held by means of tensioning or guiding heads or, in rarer cases, through winding shafts inserted into the winding tubes.
  • the rolls are wound up together, as a complete throw. As a rule, this is done by means of a circumferential winding, for which purpose at least one of the two support rollers can be driven. If a winding shaft is used, a center winding or a combination of both can also take place.
  • each individual roll to be wound is wound in a separate winding station.
  • the rollers are supported during the winding process on a support roller. Depending on the design, one to two back-up rolls and occasionally additional support rolls are used.
  • the Railbahn- or finished rolls are wound in their winding stations on winding tubes, which are each held by an imported pair clamping or guide heads.
  • the rollers are driven either via these clamping or guide heads with center winding or on the at least one support roller with circumferential winding or combined.
  • winding rolls wound around a band and / or around the forming winding rolls from a support into a support position are also understood to mean supporting or supporting rolls. Both machine types generally use additional pinch rollers which provide a desired level of winding hardness, especially at the initial stages of each winding.
  • the excitation frequency is always greater (with increasing peripheral speed, the same position of the winding more and more often passes through the same winding gap) and the exciter amplitude is increasingly violent (at the same time grows with increasing winding roll diameter and its unevenness and the effective weight).
  • the probability increases greatly that form during this complex process vibrations that are suitable (via integer harmonics) with the support rollers of the reel winding resonances, which can lead to a fierce, sometimes rapid "rocking" of the entire machine.
  • windings can be ejected from the winding bed.
  • the forming winding roll assumes the state of an anisotropic rotor.
  • the reason for this are transverse profile fluctuations of the paper web, which add up with each wrapping. It can then also with each revolution Contact losses or at least different line loads come.
  • These deformations are also referred to as s2-stroke or 2f-stroke. They are again in massive interaction with the other components involved in the entire winding system and may be jointly responsible for an eccentric roller structure.
  • this object is achieved in a method of the type mentioned in that at least one roller in the Direction of movement at least one further degree of freedom controlled and / or regulated.
  • vibration states which consist of two superimposed types of vibration, for example torsional vibrations and vertical vibrations. Accordingly, among the degrees of freedom of the rollers, the translational movement directions in the X, Y, and Z directions as well as the directions of rotation about these axes are to be understood.
  • At least one driven roller is controlled and / or regulated in the direction of movement of at least one further degree of freedom.
  • At least one of the at least one roller is controlled and / or regulated in at least two further degrees of freedom.
  • At least one of the at least one roller is controlled and / or regulated in the direction of movement of at least one of the degrees of freedom in a static and a periodic component.
  • the static component should not be understood here as a permanently unchanged state.
  • the static component is to be understood here as a control technology and, for example, reflects the planned control using the provided control curve. With respect to the roller of a reel-winding apparatus, such a curve usually includes an acceleration phase, a constant-speed phase and a deceleration phase. Relative to a damping device, the static component refers to the active or passive damping of the currently applied resulting vibration, while the periodic component of one, this vibration superimposed, usually higher-frequency, vibration corresponds.
  • the present document also speaks of macro-vibration ranges and micro-vibration ranges, the macro-vibration ranges are to describe the commonly perceived, resulting vibrations, while under the micro-vibrations superimposed vibrations, usually higher frequency and lower amplitude, understood.
  • one and the same nip can additionally act on the winding structure in a macro or micro-vibration range.
  • a plurality of degrees of freedom in static and periodic portions are controlled / regulated in a preferred manner, it is possible, by means of one and the same nips, additionally to act on the winding structure in at least one macro and / or at least one micro region.
  • a variety of excitements can be effectively combat.
  • even the smallest initial excitations as well as critical oscillatory movements can be effectively combated.
  • influence can also be exerted on the particularly influential macro-vibrations, of which the usually perceived loss of quality or damage to the winding roll as well as hazards or damage go out of the reel winder and its environment.
  • influence can also be exerted on micro vibrations which overlap these oscillations, which are decisive for the further development of the oscillations. In this way, a current danger level can be counteracted and simultaneously germinating oscillatory developments can be disturbed.
  • At least one of the at least one roller is controlled and / or regulated by means of a feedback and / or a feedforward influence.
  • action and reaction can be suitably used in the winding process to dampen vibrations depending on the phase position.
  • At least the periodic component is controlled and / or regulated in a high-frequency manner.
  • Micro-excitations usually occur at high frequency and with minimal amplitudes. You can best address them with high-frequency control mechanisms. It may well be preferable to use frequencies equal to 8Hz, in particular frequencies equal to 10Hz.
  • At least one of the rollers in particular the pressure roller, is driven to calm the winding roller about its own axis such that the static portion of the peripheral speed of the developing winding roll corresponds, and the periodic proportion of, by a rocking movement of the Winding roll induced, superimposed torsional vibration of the pressure roller corresponds.
  • the periodic component is controlled in phase and / or adjusted.
  • At least the periodic portions of the motion control of at least two rollers are directed in opposite phase to each other.
  • rollers in particular at least the pressure roller, acts on the material web or the winding roll forming by means of an elastic cover.
  • the pressure roller with a particularly large lever arm acts on the, around the hubs or about an imaginary axis in the winding bed moving, in particular rocking, winding rollers and the pressure roller also has the lowest moment of inertia, it is particularly suitable for influencing.
  • the platen roller is driven segmented and in particular also controlled and / or regulated.
  • nip contact is determined by means of at least one sensor.
  • At least one of the at least one roller with an active or passive damping device is preferably damped. Also preferably, at least one of the at least one roller with an active or passive eradication device (16) can be damped.
  • the support roller is attenuated in segments by means of the damping device or the repayment device.
  • a roller in particular the support roller in the course of the winding process is moved in entirety and / or in segments along the circumferential direction of the forming winding roll.
  • a take-up area which has two support rollers 1, 2, of which at least one is driven.
  • the support rollers 1, 2 form a roller bed in which a plurality of winding rollers 5 adjacent to one another in the Y direction rest on the support rollers 1, 2 during winding.
  • a material web M in particular a paper or board web, cut before winding into several individual webs, which then by the nip between the support rollers 1, 2 or laterally to the coat of one of the two support rollers 1, 2 around the roll bed are guided, where they are wound up in aligned rows of sleeves 4.
  • the support rollers 1, 2 each form a nip with the winding roller. 5
  • a support roller 3 forms, in the illustrated case via an elastic cover 8, an additional nip with the winding roller 5.
  • the support roller 3 is segmented in the Y direction and each individual segment is driven by its own, torsionally stiff drive motor 6.
  • the support roller 1 and the support roller 2 are driven by a drive motor 6 disposed within its roll shell.
  • the invention can be used even if only a single roller is used as a support roller for the cut longitudinally paper webs.
  • the individual winding rollers 5 are usually supported alternately in an eleven o'clock position and in a one o'clock position relative to the roller 1,2,3 acting as a supporting roller.
  • the winding rolls 5 can also be located at other, symmetrically opposite positions in the region of the two upper quadrants of the support roll.
  • a roller 1,2,3 is driven by means of an external drive motor. It is only important that the connection of the drive motor to the roller of high rigidity, changes in the drive power (motor current, torque, speed) quickly and unadulterated to the roller be put through.
  • sensors for detecting vertical vibrations of the winding roll 5, oscillations in the nip direction and torsional vibrations, d. H. in the tangential direction of the support rollers 1, 2, be present.
  • at least one roller 1, 2, 3 is equipped with at least one sensor 7 for detecting nip contact.
  • the sensor 7 may be designed as an optical sensor. In the example shown, however, it is designed as a load sensor and is in contact with the respective roller shells. It is conceivable that the sensor 7 can circumferentially monitor a plurality of discrete sections.
  • the senor is designed to be suitable for detecting the entire roll surface, and thus any contact loss, as illustrated in the figure for clarity by the open gap h, in the respective nip between the individual rolls and Wrapping rollers 5 can detect.
  • contact losses are largely avoidable.
  • vibration-induced contact losses are avoidable or at least reducible.
  • Contact losses of the platen roller 3 due to cross profile variations are more difficult to prevent.
  • determining a loss of contact in the nip between the pressure roller 3 or a segment of the pressure roller 3 and the winding rollers 5 can then provide important information for the further control strategy.
  • the at least one sensor is in contact with a control unit 9.
  • control / regulating unit is also in operative connection, directly or via interposed further control / regulating devices, also with the drive motors and optionally existing damping or erasure devices.
  • the support roller 3 and its individual segments are equipped with eradicators 12, which are symbolically represented here by a ring around the driven axle.
  • the eradication devices 12 are in operative contact with the control / regulating device via contact lines or wirelessly.
  • the support roller 1 is driven by the control / regulating device 9 via its drive motor 8 by its rotational degree of freedom.
  • the arrow S 1-1 indicates the static component while the arrow pair P 1-1 represents the superimposed periodic component.
  • the forming in Nipcardi linear degree of freedom of the support roller 1 is indicated by the arrow S 1-2 . In this case, the permitted movement is regulated by means of the active damping device 10.
  • the pressure roller 3 is equipped with a Tilger Vintage 12, in the present case, only the first of the aligned in the Y direction juxtaposed segments of the pressure roller 3 is visible. The same applies to the cores 4 and the winding rollers 5 forming on them.
  • the pressure roller 3 is at least temporarily controlled and / or regulated via the winding process in a total of 3 degrees of freedom in static and periodic proportions. It is therefore able to counteract vibrational states propagating in space in static and periodic proportions and ideally to eliminate the complexly superimposed vibration states.
  • the pressure roller 3 can only be controlled or regulated in 2 degrees of freedom, the path of the pressure roller counteracting the vibrations moves to an orbit. Again, this is often sufficient to achieve significant improvements in the winding process, since the individual bobbins 5 tilt only in rare cases to their front pages or swing back and forth in the transverse direction (Y-direction).
  • the oscillatory process initiating movements of the winding rollers 5 are represented by the arrows S 5-1 and P 5-1 and S 5-2 .
  • S 5-1 represents the desired winding speed
  • P 5-1 the vibration-generating periodic Mirkoanteil due to unevenness of the bobbin circumference
  • S 5-1 an exemplary rocking motion, as occurs when meet (via integer harmonics) resonance areas of the individual vibration partners.
  • the pivot point of the swinging motion can thereby change dynamically due to the growing roll diameter, vibrations and winding movements or temporary loss of Nipcard, dynamically.
  • the influence is introduced in phase, or phase-shifted, reactive or forward-looking (feedback / feedforward).
  • a control software which also anticipates machine-related disturbances and, in particular, is designed as a self-learning system.

Landscapes

  • Winding Of Webs (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Replacement Of Web Rolls (AREA)
EP20100187883 2009-12-29 2010-10-18 Procédé d'enroulement d'une bande de matériau Ceased EP2341020A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910055349 DE102009055349A1 (de) 2009-12-29 2009-12-29 Verfahren zum Aufwickeln einer Materialbahn

Publications (2)

Publication Number Publication Date
EP2341020A2 true EP2341020A2 (fr) 2011-07-06
EP2341020A3 EP2341020A3 (fr) 2012-01-25

Family

ID=43825333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100187883 Ceased EP2341020A3 (fr) 2009-12-29 2010-10-18 Procédé d'enroulement d'une bande de matériau

Country Status (2)

Country Link
EP (1) EP2341020A3 (fr)
DE (1) DE102009055349A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012107644A1 (fr) * 2011-02-09 2012-08-16 Metso Paper, Inc. Procédé permettant de réduire des vibrations dans un enrouleur de bande partielle pour bande fibreuse

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110526013A (zh) * 2019-08-20 2019-12-03 湖南金时科技有限公司 一种塑料薄膜防跑偏除静电装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008053931A1 (de) 2008-10-30 2010-05-06 Voith Patent Gmbh Rollenwickeleinrichtung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739515C3 (de) * 1977-09-02 1981-04-16 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum Aufwickeln einer Warenbahn, insbesondere aus Papier
US4180216A (en) * 1978-04-12 1979-12-25 Beloit Corporation Winder with horizontal rider roll adjustment
US4541585A (en) * 1983-09-06 1985-09-17 Beloit Corporation Compliant drum and rider roll
FI105464B (fi) * 1996-06-10 2000-08-31 Valmet Corp Menetelmä ja laite rullauksessa
DE10036306B4 (de) * 2000-07-26 2006-03-30 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum gleichzeitigen Wickeln von mehreren Teilbahnen zu Teilbahnrollen
DE102005000082A1 (de) * 2005-06-29 2007-01-04 Voith Patent Gmbh Wickelmaschine
ATE548308T1 (de) * 2005-11-29 2012-03-15 Voith Patent Gmbh Rollenwickeleinrichtung
FI118961B (fi) * 2006-04-06 2008-05-30 Metso Paper Inc Menetelmä värähtelyn vaimennuksessa rullaimilla
FI121460B (fi) * 2008-04-10 2010-11-30 Metso Paper Inc Kantotelarullain ja menetelmä kantotelarullaimen käyttämiseksi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008053931A1 (de) 2008-10-30 2010-05-06 Voith Patent Gmbh Rollenwickeleinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012107644A1 (fr) * 2011-02-09 2012-08-16 Metso Paper, Inc. Procédé permettant de réduire des vibrations dans un enrouleur de bande partielle pour bande fibreuse

Also Published As

Publication number Publication date
EP2341020A3 (fr) 2012-01-25
DE102009055349A1 (de) 2011-06-30

Similar Documents

Publication Publication Date Title
EP2415701A2 (fr) Procédé d'enroulement d'une bande de matériau et dispositif de refendage de la bande
AT506982B1 (de) Verfahren zur dämpfung von schwingungen in aufwicklern
EP2080722A2 (fr) Dispositif d'enroulement de rouleaux et procédé destiné à enrouler une bande de matériau sur un rouleau
EP1739040B1 (fr) Enrouleuse
EP2436626A2 (fr) Dispositif d'enroulement de rouleaux et procédé de fabrication de rouleaux d'enroulement
EP2341020A2 (fr) Procédé d'enroulement d'une bande de matériau
EP2341021A2 (fr) Dispositif d'enroulement de rouleaux
EP1900661A2 (fr) Bobineuse
EP2181950B1 (fr) Dispositif d'enroulement de rouleaux
EP2341024A2 (fr) Dispositif d'enroulement à rouleaux et procédé destiné à enrouler une bande de matériau
EP2266903B1 (fr) Procédé d'enroulement et dispositif d'enroulement de rouleaux
EP3934997B1 (fr) Entraînement de machines de découpe de bobines
EP1764327B1 (fr) Dispositif d'enroulement
EP2341022A2 (fr) Dispositif d'enroulement de rouleaux
EP2436625A2 (fr) Procédé de fabrication et de traitement du papier
EP2341023A2 (fr) Dispositif d'enroulement à rouleaux et procédé destiné à enrouler une bande de matériau
EP2096059B1 (fr) Cylindre d'enrouleur de rouleaux et dispositif d'enrouleur de rouleaux
EP2436629A2 (fr) Procédé d'enroulement
DE102021121803A1 (de) Kernverriegelungssystem
EP1790598B1 (fr) Enrouleuse pour enrouler une bande
DE102021119111A1 (de) Verfahren und Vorrichtung zum Aufwickeln einer Materialbahn in einer Rollenschneidmaschine
AT509265B1 (de) Wickelpartie für einen rollenschneider einer faserbahn und verfahren zum modernisieren einer wickelpartie für einen rollenschneider einer faserbahn
EP2471730A2 (fr) Procédé d'enroulement d'une bande de papier ou de carton et dispositif d'enroulement de cylindres à support double destiné à enrouler une bande de papier ou de carton
DE202016105955U1 (de) System zum Dämpfen von Vibrationen in einem Nip einer Faserbahnmaschine
DE112012000734T5 (de) Verfahren zum Verringern von Schwingungen in einem Teilbahnwickler für eine Faserbahn

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: B65H 18/20 20060101AFI20111220BHEP

17P Request for examination filed

Effective date: 20120725

17Q First examination report despatched

Effective date: 20130109

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20150626