EP3333314A1 - Unité de formation - Google Patents

Unité de formation Download PDF

Info

Publication number
EP3333314A1
EP3333314A1 EP16202856.7A EP16202856A EP3333314A1 EP 3333314 A1 EP3333314 A1 EP 3333314A1 EP 16202856 A EP16202856 A EP 16202856A EP 3333314 A1 EP3333314 A1 EP 3333314A1
Authority
EP
European Patent Office
Prior art keywords
roll
forming
forming unit
wire
sleeve
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.)
Pending
Application number
EP16202856.7A
Other languages
German (de)
English (en)
Inventor
Antti Poikolainen
Sami Anttilainen
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.)
Valmet Technologies Oy
Original Assignee
Valmet Technologies Oy
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 Valmet Technologies Oy filed Critical Valmet Technologies Oy
Priority to EP16202856.7A priority Critical patent/EP3333314A1/fr
Priority to CN201711247554.1A priority patent/CN109868671A/zh
Publication of EP3333314A1 publication Critical patent/EP3333314A1/fr
Pending legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type

Definitions

  • the invention relates generally to producing fiber webs. Particularly the invention relates to a forming unit according to the preamble of claim 1 and to a modernized forming unit according to the preamble of claim 2.
  • a typical production and treatment line comprises a forming section comprising a head box and a forming unit and a press section as well as a subsequent drying section and a reel-up.
  • the production and treatment line can further comprise other devices and sections for finishing the fiber web, for example, a size press, a calender, a coating section.
  • the production and treatment line also comprises typically at least one winder for forming customer rolls as well as a roll packaging apparatus.
  • the task of a forming unit is to remove water from fiber suspension fed by the head box.
  • water in the stock is removed on the forming section through a forming wire or forming wires for starting the formation of the web. Fibers remain on the forming wire or between the forming wires moving together.
  • different types of stocks are used.
  • the volume for which water can be removed from different stocks for achieving a web of good quality is a function of many factors, such as e.g. a function of the desired basis weight of the web, the design speed of the machine, and the desired level of fines, fibers and fill materials in the finished product.
  • patent publication FI 83102 C is disclosed a web forming unit, in which there is a first and a second forming roll inside the supporting wire loop.
  • the covering and supporting wire loop runs a common vertical route from and with the first forming roll to the second forming roll.
  • the actual web forming occurs in the area of the common run, which from and including the forming gap comprises the following forming and drainage zones: a first forming zone, in which the drainage occurs in the area of the first forming roll with hollowed out surface, first in the gap and thereafter through both the wires on the common sector a of the wires, which covers the first forming roll, a second forming zone in the area defined by a curved cover part of the static forming element, a third forming zone inside the supporting wire loop in the area of the suction roll, which serves as the second forming roll.
  • FIG 1 is schematically shown an example of a forming unit according to prior art, which is a gap former with substantially vertical draw in the twin-wire part.
  • the forming unit receives comprises the stock suspension M from a head box.
  • the stock suspension is fed to the forming unit formed comprising a lower wire 10 and an upper wire 20 with a substantially vertical common run, each wire formed as an endless loop comprising rolls 12, 22 for guiding and driving the wire.
  • the stock suspension M is first fed into a gap formed between the lower wire 10 and the upper wire 20.
  • the first water removal means is a forming roll 23 with a wrap angle 23V, which forming roll 23 is located inside the loop formed by the upper wire 20.
  • the forming roll 23 is typically a suction roll.
  • the forming roll 23 is followed by pulsating water removal means; a foil box 24 forming pulsating water removal zone Z.
  • the foil box 24 is located inside the loop formed by the upper wire 20.
  • the fiber web is further guided between the upper and the lower wire 20, 10 to a suction roll 13 with a wrap angle 13V, which suction roll 13 is located inside the lower wire 10.
  • From the forming roll the runs of the wires 10, 20 separate and the fiber web is guided on the lower wire 10, now running horizontally, slightly downwards towards and to the pick-up roll 31 transferring the fiber web to a press section.
  • These types of forming units typically are used in printing paper machines. At present days an over capacity of paper production is common and thus the paper machines are closed or modernized to be board machines.
  • the types of a gap formers described above are not as such suitable for producing board webs and large scale rebuild is needed in order to have enough water removal capacity at the forming unit.
  • this has been tried to solve by adding water removal devices of the forming unit, which naturally increases costs and complicates the construction of the forming unit.
  • a forming unit comprising two wire loops which form a twin-wire zone which comprises a dewatering element performing initial dewatering and a dewatering device following it.
  • the dewatering device comprises a stationary support shaft on which are supported support elements around which circles an im-permeable belt loop.
  • the dewatering device further comprises a curvilinear dewatering zone over which the wires travel supported by the belt loop. The degree of curvature of the curve of the curvilinear dewatering zone increases in the travel direction of the belt such that increasing dewatering pressure is applied to stock suspension travelling between the wires on the curvilinear dewatering zone.
  • Said at least one curvilinear dewatering zone of said at least one dewatering device consists of two partial curves such that the radius of curvature of a first partial curve is greater than the radius of curvature of a second partial curve following the first partial curve in the travel direction of the web.
  • An object of the invention is to create a forming unit, in which the disadvantages and problems of prior art are eliminated or at least minimized.
  • an object of the invention is to provide a new type of forming unit in which has improved water removal capacity.
  • a non-limiting object of the invention is to create a modernized forming unit, in which the disadvantages and problems of prior art are eliminated or at least minimized.
  • the forming unit according to the invention is mainly characterized by the features of the characterizing clause of claim 1 or 2.
  • Advantageous embodiments and features are disclosed in the dependent claims.
  • the forming unit is a gap former formed between a lower wire and an upper wire, in which first water removal means of the gap former of the forming unit is a forming roll.
  • first water removal means of the gap former of the forming unit is a forming roll.
  • a sleeve roll is located, which distance is measured between the point, in which lower and upper wires wrap angle ends on the forming roll and the point in which lower and upper wires are in the contact on the sleeve roll i.e. the point in which the contact of the lower and upper wires begins on the sleeve roll.
  • the modernized forming unit is modernized from an existing former comprising a gap former formed between a lower wire and an upper wire, in which first water removal means of the gap former of the forming unit is a forming roll comprising a wrap angle and in the forming unit at a distance of less than 2 meters from the forming roll a sleeve roll is located, which distance is measured between the point, in which lower and upper wires wrap angle ends on the forming roll and the point, in which contact of the lower and upper wires begins on the sleeve roll.
  • the sleeve roll comprises a stationary support shaft, an belt loop, which is led to circle around the stationary support shaft, that the sleeve roll further comprises at least one curvilinear dewatering zone consisting of two partial curves such that the radius of curvature of a first partial curve is greater than the radius of curvature of a second partial curve following the first partial curve in the travel direction of belt loop.
  • the sleeve roll (50) comprises support elements supported at a distance from each other on the stationary support shaft, the belt loop led to circle around the stationary support shaft is supported by the support elements and the belt loop is impermeable.
  • the distance between the forming roll and the sleeve roll is in lower and upper wires running direction 0,2 - 2 meters, advantageously 0,3 - 1,5 meters.
  • the run between the forming roll and the sleeve roll is free of suction boxes.
  • a suction roll is located following at a distance the sleeve roll and at the run between the suction roll and the sleeve roll a suction box is located.
  • the forming roll wrap angle is 40 - 110 degrees.
  • the forming unit according to the invention many advantages are achieved. Water removal capacity of the forming unit is increased without need of adding further use or suction power and as less pulsating water removal is used better strength properties of the fiber web are achieved. Short distance from the forming roll to the sleeve roll enables manufacturing of packaging board grades with high quality, efficiency and capacity. The modernization of an existing forming unit is easy and the new devices can be fitted in the places of the removed ones and thus there is no need to move the location of the head box.
  • FIG 1 is schematically shown an example of a forming unit according to prior art, which is a gap former with substantially vertical draw in the twin-wire part.
  • the forming unit receives comprises the stock suspension M from a head box 30.
  • the stock suspension is fed to the forming unit formed comprising a lower wire 10 and an upper wire 20 with a substantially vertical common run, each wire formed as an endless loop comprising rolls 12, 22 for guiding and driving the wire.
  • the stock suspension M is first fed into a gap formed between the lower wire 10 and the upper wire 20.
  • the first water removal means is a forming roll 23 with a wrap angle 23V, which forming roll 23 is located inside the loop formed by the upper wire 20.
  • the forming roll 23 is typically a suction roll.
  • the forming roll 23 is followed by pulsating water removal means; a foil box 24 forming pulsating water removal zone Z.
  • the foil box 24 is located inside the loop formed by the upper wire 20.
  • the fiber web is further guided between the upper and the lower wire 20, 10 to a suction roll 13 with a wrap angle 13V, which suction roll 13 is located inside the lower wire 10.
  • From the forming roll the runs of the wires 10, 20 separate and the fiber web is guided on the lower wire 10, now running horizontally, slightly downwards towards and to the pick-up roll 31 transferring the fiber web to a press section.
  • These types of forming units typically are used in printing paper machines. At present days an over capacity of paper production is common and thus the paper machines are closed or modernized to be board machines.
  • the types of a gap formers described above are not as such suitable for producing board webs and large scale rebuild is needed in order to have enough water removal capacity at the forming unit.
  • this has been tried to solve by adding water removal devices of the forming unit, which naturally increases costs and complicates the construction of the forming unit.
  • FIG 2 is shown an example of a forming unit, which is a gap former type forming unit and begins with a twin-wire part with a substantially vertical run.
  • stock suspension M is fed to the forming unit formed as a gap former comprising a lower wire 10 and an upper wire 20, each comprising rolls 12, 22 for guiding and driving the wire as an endless loop.
  • the stock suspension M is first fed into a gap formed between the lower wire 10 and the upper wire 20.
  • the first water removal means is a forming roll 23 with a wrap angle 23V, which forming roll 23 is located inside the loop formed by the upper wire 10. Wrap angle 23V is advantageously 40-110 degrees for ensuring required water removal capacity.
  • the forming roll 23 is typically a suction roll.
  • the forming roll 23 is followed by a sleeve roll 50, which is located inside the loop formed by the lower wire 10.
  • the distance L between the forming roll 23 and the sleeve roll 50 is in lower and upper wires 10, 20 running direction only about 0,2 - 2 meters, advantageously 0,3 - 1,5 meters.
  • the distance L is measured between the point in which lower and upper wires 10, 20 wrap angle 23V ends on the forming roll 23 and between the point in which lower and upper wires 10, 20 are in the contact on the sleeve roll 50 i.e. the point in which the contact of the lower and upper wires 10, 20 begins on the sleeve roll 50.
  • the fiber web is further guided between the upper and the lower wire 20, 10 to a suction roll 13 with a wrap angle 13V, which suction roll 13 is located inside the lower wire 10 and at a distance towards the pick-up roll 31 transferring the fiber web to a press section the runs of the wires 10, 20 are separated and the end part of the forming unit is formed as a one wire part with substantially slightly downwards inclined horizontal run.
  • the further water removal means 25 is advantageously a suction box 25, which supports the run of the fiber web during the lengthy run between the sleeve roll 50 and the suction roll 13.
  • FIG 3 is shown an example of a forming unit, which is a gap former type forming unit and begins with a twin-wire part with a substantially vertical run.
  • stock suspension M is fed to the forming unit formed as a gap former comprising a lower wire 10 and an upper wire 20, each comprising rolls 12, 22 for guiding and driving the wire as an endless loop.
  • the stock suspension M is first fed into a gap formed between the lower wire 10 and the upper wire 20.
  • the first water removal means is a forming roll 23 with a wrap angle 23V, which forming roll 23 is located inside the loop formed by the upper wire 10.
  • the forming roll 23 is typically a suction roll.
  • the forming roll 23 is followed support foils 26 that support the run of the wires 10, 20 between the forming roll 23 and the sleeve roll 50 and remove water from the surface of the wire 20.
  • the support foils 26 do not itself remove water from the fiber web, so the support foils 26 do not change the course of the wires 10, 20.
  • the support foils 26 are followed by a sleeve roll 50, which is located inside the loop formed by the lower wire 10.
  • the distance L between the forming roll 23 and the sleeve roll 50 is in lower and upper wires 10, 20 running direction only about 0,2 - 2 meters.
  • the distance L is measured between the point in which lower and upper wires 10, 20 wrap angle 23V ends on the forming roll 23 and between the point in which lower and upper wires 10, 20 are in the contact on the sleeve roll 50 i.e. the point in which the contact of the lower and upper wires 10, 20 begins on the sleeve roll 50.
  • the support foils 26 can be situated also on the wire run between the rolls 50, 13 (not shown).
  • the fiber web is further guided between the upper and the lower wire 20, 10 and at a distance towards the pick-up roll 31 transferring the fiber web to a press section the runs of the wires 10, 20 are separated and the end part of the forming unit is formed as a one wire part with substantially slightly downwards inclined horizontal run.
  • the further water removal means 25 is advantageously a suction box device.
  • FIG 4 is shown an example of a forming unit, which is a gap former type forming unit and begins with a twin-wire part with a substantially vertical run.
  • stock suspension M is fed to the forming unit formed as a gap former comprising a lower wire 10 and an upper wire 20, each comprising rolls 12, 22 for guiding and driving the wire as an endless loop.
  • the stock suspension M is first fed into a gap formed between the lower wire 10 and the upper wire 20.
  • the first water removal means is a forming roll 23 with a wrap angle 23V, which forming roll 23 is located inside the loop formed by the upper wire 10. Wrap angle 23V is advantageously 40-110 degrees for ensuring required water removal capacity.
  • the forming roll 23 is typically a suction roll.
  • the forming roll 23 is followed by a sleeve roll 50, which is located inside the loop formed by the lower wire 10.
  • the distance L between the forming roll 23 and the sleeve roll 50 is in lower and upper wires 10, 20 running direction only about 0,2 - 2 meters, advantageously 0,3 - 1,5 meters.
  • the distance L is measured between the point in which lower and upper wires 10, 20 wrap angle 23V ends on the forming roll 23 and between the point in which lower and upper wires 10, 20 are in the contact on the sleeve roll 50 i.e. the point in which the contact of the lower and upper wires 10, 20 begins on the sleeve roll 50.
  • the fiber web is further guided between the upper and the lower wire 20, 10 to a suction roll 13 with a wrap angle 13V, which suction roll 13 is located inside the lower wire 10 and at a distance towards the pick-up roll 31 transferring the fiber web to a press section the runs of the wires 10, 20 are separated and the end part of the forming unit is formed as a one wire part with substantially slightly downwards inclined horizontal run.
  • the further water removal means 15 is advantageously a suction box 15, which supports the run of the fiber web during the lengthy run between the sleeve roll 50 and the suction roll 13 and increases the wrap angle on the sleeve roll 50.
  • FIG 5 is shown an example of a forming unit, which is a gap former type forming unit and begins with a twin-wire part with a substantially horizontal run.
  • stock suspension M is fed to the forming unit formed as a gap former comprising a lower wire 10 and an upper wire 20, each comprising rolls 12, 22 for guiding and driving the wire as an endless loop.
  • the stock suspension M is first fed into a gap formed between the lower wire 10 and the upper wire 20.
  • the first water removal means is a forming roll 23 with a wrap angle 23V, which forming roll 23 is located inside the loop formed by the upper wire 10. Wrap angle 23V is advantageously 40-110 degrees for ensuring required water removal capacity.
  • the forming roll 23 is typically a suction roll.
  • the forming roll 23 is followed by a sleeve roll 50, which is located inside the loop formed by the lower wire 10.
  • the distance L between the forming roll 23 and the sleeve roll 50 is in lower and upper wires 10, 20 running direction only about 0,2 - 2 meters, advantageously 0,3 - 1,5 meters.
  • the distance L is measured between the point in which lower and upper wires 10, 20 wrap angle 23V ends on the forming roll 23 and between the point in which lower and upper wires 10, 20 are in the contact on the sleeve roll 50 i.e. the point in which the contact of the lower and upper wires 10, 20 begins on the sleeve roll 50.
  • the fiber web is further guided between the upper and the lower wire 20, 10 to a suction roll 13 with a wrap angle 13V, which suction roll 13 is located inside the lower wire 10 and at a distance towards the pick-up roll 31 transferring the fiber web to a press section the runs of the wires 10, 20 are separated as the run of the upper wire 20 is turned upwards and the end part of the forming unit is formed as a one wire part with substantially slightly downwards inclined horizontal run.
  • the further water removal means 25 is advantageously a suction box 25, which supports the run of the fiber web during the lengthy run between the sleeve roll 50 and the suction roll 13.
  • the further water removal means 16 are selected from a group consisting of forming shoes and suction devices.
  • a sleeve roll 50 with decreasing radius which comprises a stationary support shaft 51 on which support elements 52 are supported at a distance from each other, an impermeable belt loop 53 which is led to circle around the stationary support shaft 51 supported by the support elements 52.
  • the sleeve roll 50 further comprises at least one curvilinear dewatering zone K via which the wires 10, 20 are led to travel supported by the belt loop 53.
  • the degree of curvature of the curve of the curvilinear dewatering zone K increases in the travel direction of the belt 53 such that increasing dewatering pressure is applied to the stock suspension travelling between the wires 10, 20 on said at least one curvilinear dewatering zone K.
  • Radius of curvature of the curvilinear dewatering zone K consists of two partial curves such that the radius of curvature K1 of a first partial curve is greater than the radius of curvature K2 of a second partial curve following the first partial curve K1 in the travel direction of belt loop 53.
  • Radius of curvature of the curvilinear dewatering zone K can contain several curves such that the radius of curvatures decreases in the running direction of the wires.
EP16202856.7A 2016-12-08 2016-12-08 Unité de formation Pending EP3333314A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP16202856.7A EP3333314A1 (fr) 2016-12-08 2016-12-08 Unité de formation
CN201711247554.1A CN109868671A (zh) 2016-12-08 2017-12-01 成形单元及改进式成形单元

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16202856.7A EP3333314A1 (fr) 2016-12-08 2016-12-08 Unité de formation

Publications (1)

Publication Number Publication Date
EP3333314A1 true EP3333314A1 (fr) 2018-06-13

Family

ID=57539077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16202856.7A Pending EP3333314A1 (fr) 2016-12-08 2016-12-08 Unité de formation

Country Status (2)

Country Link
EP (1) EP3333314A1 (fr)
CN (1) CN109868671A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210363698A1 (en) * 2020-05-20 2021-11-25 Valmet Technologies Oy Fiber Web Machine Sleeve Roll Belt

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113556A (en) * 1976-04-14 1978-09-12 Valmet Oy Paper machine with twin-wire former
FI83102C (fi) 1985-07-04 1992-06-03 Valmet Oy Banformningsparti i pappersmaskin.
EP0716184A2 (fr) * 1994-12-09 1996-06-12 Voith Sulzer Papiermaschinen GmbH Méthode et dispositif pour la déshydratation d'une couche de pâte à papier dans une section de formage à deux toiles
WO2010046527A1 (fr) 2008-10-24 2010-04-29 Metso Paper, Inc. Section de mise en forme

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT379622B (de) * 1980-11-26 1986-02-10 Escher Wyss Gmbh Papiermaschine mit zwei beweglichen wasserdurchlaessigen entwaesserungsbaendern, z.b. sieben
FI126656B (fi) * 2012-09-03 2017-03-31 Valmet Technologies Inc Järjestely kerrostetun rainan muodostamiseksi kuiturainakoneessa, monikerroskuiturainakone ja menetelmä kerrostetun rainan muodostamiseksi kuiturainakoneella

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113556A (en) * 1976-04-14 1978-09-12 Valmet Oy Paper machine with twin-wire former
FI83102C (fi) 1985-07-04 1992-06-03 Valmet Oy Banformningsparti i pappersmaskin.
EP0716184A2 (fr) * 1994-12-09 1996-06-12 Voith Sulzer Papiermaschinen GmbH Méthode et dispositif pour la déshydratation d'une couche de pâte à papier dans une section de formage à deux toiles
WO2010046527A1 (fr) 2008-10-24 2010-04-29 Metso Paper, Inc. Section de mise en forme

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210363698A1 (en) * 2020-05-20 2021-11-25 Valmet Technologies Oy Fiber Web Machine Sleeve Roll Belt
US11725344B2 (en) * 2020-05-20 2023-08-15 Valmet Technologies Oy Fiber web machine sleeve roll belt

Also Published As

Publication number Publication date
CN109868671A (zh) 2019-06-11

Similar Documents

Publication Publication Date Title
FI75376C (fi) Formningssko foer formare i pappersmaskin.
US7364643B2 (en) Forming of a paper or board web in a twin-wire former or in a twin-wire section of a former
EP2350385B1 (fr) Section de formation
EP0371786A2 (fr) Procédé et dispositif de formation de bandes continues
FI83977C (fi) Gapformare i pappersmaskin.
US4033812A (en) Dewatering systems for paper machines
CN101479426A (zh) 成形部
US3944464A (en) Forming section for twin-wire papermaking machine
EP3382094B1 (fr) Section de formage d'une bande de matériau fibreux multicouche et procédé de formage d'une bande de matériau fibreux multicouche
CN101374998B (zh) 用于纤维幅材机如造纸机或纸板机的干燥部中的方法及装置
EP3333314A1 (fr) Unité de formation
JPH08502793A (ja) ダブルワイヤシートフォーマ
EP3333315B1 (fr) Section de formation
KR100362492B1 (ko) 제지기계용하이브리드포머
CN103354851A (zh) 纸页成形设备
EP3757287A1 (fr) Procédé de formation d'une bande de carton à trois couches et section de formation d'une bande de carton à trois couches
FI129446B (en) Forming portion of a fibrous web production line
JP5444362B2 (ja) 複数の排水シューを有するツインファブリック形成部
US4285768A (en) Apparatus for dewatering fiber suspension for producing a web of fiber
US1880056A (en) Manufacture of rovings, yarns, twines, and the like
NO149247B (no) Formingsdel med to virer i en papirmaskin.
EP3913137A1 (fr) Système pour changer la direction d'une bande de matériau fibreux dans une section de formation d'une machine de production d'une bande de matériau fibreux
FI84638C (fi) Hybridformare foer en pappersmaskin.
FI20206215A1 (en) Fiber web forming method and forming part for forming a fiber web
CN104508201A (zh) 成形部

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

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

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

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

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20181121

RBV Designated contracting states (corrected)

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

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20210920