EP4230793A1 - Verfahren und system zur herstellung von faserbahnen - Google Patents

Verfahren und system zur herstellung von faserbahnen Download PDF

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Publication number
EP4230793A1
EP4230793A1 EP23151644.4A EP23151644A EP4230793A1 EP 4230793 A1 EP4230793 A1 EP 4230793A1 EP 23151644 A EP23151644 A EP 23151644A EP 4230793 A1 EP4230793 A1 EP 4230793A1
Authority
EP
European Patent Office
Prior art keywords
fiber web
trim
winder
slitter
fiber
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
EP23151644.4A
Other languages
English (en)
French (fr)
Inventor
Ilkka Naatti
Simo Rahkonen
Jussi MANKKI
Hannu Kasula
Ilkka LINNAMÄKI
Tuomo SIPPUS
Mikael SILLFORS
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
Publication of EP4230793A1 publication Critical patent/EP4230793A1/de
Pending legal-status Critical Current

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Classifications

    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
    • 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
    • B26D11/00—Combinations of several similar cutting apparatus
    • 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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • 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
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet

Definitions

  • present invention relates to producing of fiber webs in a fiber web production line. More especially the present invention relates to a method according to preamble part of the independent method claim and to a system according to preamble part of the independent system claim.
  • fiber webs are meant for example a paper and board webs.
  • the fiber webs are produced by fiber web production methods in fiber web production systems, typically in fiber web production lines.
  • fiber web production methods and systems typically comprise an assembly formed by a number of apparatus arranged consecutively in the fiber web production line.
  • a typical fiber web production and treatment line comprises a head box, a wire section 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/or sections for finishing the fiber web, for example, a pre-calender, a sizer, a final-calender, a coating section.
  • the production and treatment line also typically comprises at least one slitter-winder for forming customer rolls as well as a roll packaging apparatus.
  • a fiber web production lines can be hundreds of meters long. Modern fiber web production lines can produce over 450,000 tons of fiber web per year. Speed of the fiber web production line can exceed 2,000 m/min and width of the fiber web in the production line can be more than 11 meters.
  • the production of the fiber web takes place as a continuous process.
  • a fiber web completing in the fiber web production line is reeled by the reel-up around a reeling shaft i.e. a reel spool into a parent roll, diameter of which can be more than 5 meters and weight more than 160 tons.
  • the purpose of the reeling is to modify the fiber web manufactured as planar to a more easily processable form.
  • the continuous process of the fiber web production line breaks for the first time and shifts into periodic operation.
  • the fiber web of the parent roll produced in the fiber web production line is fullwidth and typically even more than 100 km long so it is slitted into component fiber webs (partial fiber webs) with suitable width and length for the customers of the fiber web mill and wound around winding cores into so-called customer rolls (partial fiber web rolls) before delivering them from the fiber web mill.
  • the slitting and winding up of the fiber web takes place as known in an appropriate separate machine i.e. in a slitter-winder.
  • the parent roll On the slitter-winder, the parent roll is unwound in an unwinding section, the wide web is slit on a slitting section into several narrower component webs which are wound up on a winding section around winding cores, such as spools, into customer rolls.
  • the slitter-winder is stopped and the wound rolls i.e. the so-called set is removed from the slitter-winder and new winding cores for a new set of new component fiber web rolls are to be transferred to winding stations for winding the new set of the new component fiber web rolls.
  • the process on the slitter-winder is continued with the winding of a new set.
  • Slitter-winders employ winding devices for winding the customer rolls of different types depending on, inter alia, on the type of the fiber web being wound.
  • the fiber web is guided from the unwinding via guide rolls to the slitting section, where the fiber web is slit into component fiber webs, which are further guided via guide rolls to the winding (support or carrier) drum of the two drum winder and slit component webs are wound around a winding core on support of the winding drums.
  • the web is guided from the unwinding via guide rolls to the slitting section, where the fiber web is slit into component fiber webs, which are further guided via guide rolls to the winding drum/drums on the winding stations to be wound up onto winding cores into customer rolls.
  • the adjacent component fiber webs are wound up on different sides of the winding drum/drums.
  • Multistation winders have one to three winding drums and in them each component web is wound to a component fiber web roll in its own winding station.
  • the arrangement has also a support plate equipped with a cutout for the water jet, so that it can pass through unimpeded.
  • the water jet cutter is located in the dryer section of the fiber web production or conversion line and in order to produce clean edges on the fiber web, the water jet cutter is utilized in the unsupported section of the fiber web, for example at the end of one dryer group, and specifically at the end of the last dryer group.
  • a paper making machine comprising a forming section in which a fiber web can be formed; a drying section in which a formed fiber web can be dried; and a reel-up on which a dried fibrous web can be wound into a roll, and the paper making machine has at least one water jet cutting device arranged to cut the fiber web that is moving in the machine direction such that the fiber web is divided into at least one waste part and a remaining part and the waste part is guided away from the path of the remaining part.
  • a movable integral water jet web cutting and trim chute unit adapted for relative movement inwardly of an outside edge of a web travelling in a first direction to cut a strip from the travelling web and to remove the strip
  • the movable integral water jet web cutting and trim chute unit comprising: a support plate adapted to extend relative to the plane of the travelling web to support the web immediately prior to and after the strip is cut from the edge of the travelling web as the unit moves relative to the web, and the support plate having a cutting aperture; a water jet nozzle positioned behind the support plate aligned with the cutting aperture for directing a water jet through the cutting aperture and away from the support plate to cut through the web and form the strip; a trim chute extending out of and away from the plane of the travelling web from the support plate and having an opening in the support plate downstream of the cutting aperture, the trim chute opening being bounded by a first side edge extending in the first direction of web travel substantially in alignment with the cutting aperture to limit that portion of the web passing over
  • EP3855373A1 is disclosed a method of generating optimal trimming patterns for trimming raw rolls and/or sheets for fulfillment of a flat sheet stock and/or customer orders.
  • a paper making machine comprising a forming section with least one water jet cutting device arranged to cut the fibrous web that is moving in the machine direction such that the fibrous web is divided into at least one waste part and a remaining part and wherein the paper making machine is arranged to direct the at least one waste part away from the predetermined path and to convey the remaining part further in the machine direction along the predetermined path.
  • width of the fiber web on the reel-up does not correspond to width required based on widths of required customer rolls to be produced on the sitter winder as in practice used edge cutting devices (trim cutting devices) at the slitter-winder typically are not capable of cutting wide enough edge strips for removal of wide enough trim strip such, that the width of the full width web would correspond to that required by the set of the customer rolls to be produced.
  • edge cutting devices trim cutting devices
  • the known edge cutting devices for controlling the trim of the fiber web need a support device on opposite side of the fiber web in respect of the cutting device.
  • the cutting devices typically are based on either water jet cutting or on cutting by rotating blades.
  • After cutting the trim strip is typically guided to repulping via a pipe-like removal device, which typically has an underpressure created by an ejector, a shredder blower or an underpressure blower.
  • the maximum of the trim strip is 150 mm, in some rare cases at most 300 mm.
  • An object of the invention is to create an improved method and system of producing of fiber webs, especially in view trim width control, in which the disadvantages and problems of prior art are eliminated or at least minimized.
  • An object of the invention is to create an improved method and system of producing of fiber webs, especially in view trim width control, in which new, alternative ways of controlling the trim width for the customer rolls are provided.
  • the method to the invention is mainly characterized by the features of the characterizing clause of the independent method claim and the system according to the invention is in turn mainly characterized by the features of the characterizing clause of the independent system claim.
  • the fiber web is fed the from a head box to a forming section, in which water is removed from the pulp by water removal means and a fiber web is formed, in which water is further removed by pressing the fiber web in a press section, in which in a subsequent drying section the fiber web is dried, in which the fiber web is reeled into a parent roll in a reel-up, in which the parent roll is unwound in an unwinder of a slitter-winder and then slit into partial fiber webs in a slitter of the slitter-winder, which partial fiber webs are wound to customer rolls in a winder of the slitter winder, in which method the fiber web is trimmed in machine direction before the reeling on the reel-up, preferably before a last drying cylinder of the drying section, by at least one trim cutting device, in which trimming at least one trim strip is removed from at least one edge of the fiber web, wherein the fiber web is trimmed by the cutting of the at
  • the trim strip has a width of at least 150 mm, advantageously over 300 mm, more advantageously over 500 mm.
  • the width of the trim strip is adjustable.
  • the fiber web is trimmed at the end of the drying section.
  • the trim strip is removed to a pulper or to a reject conveyor leading to a pulper.
  • the removal is advantageously directly to the pulper or the reject conveyor and no suction pipes or like are needed.
  • the trimming of the fiber web is performed by water jet cutting, advantageously by high pressure water jet cutting, typically with pressure over 600 bar, advantageously over 1500 bar.
  • the trimming the fiber web is performed in the drying section at a location, where the fiber web runs between two, following each other located drying cylinders or at a drying cylinder.
  • width of the trim strip is controlled based on information of the required width of the fiber web for the set of the customer rolls to be produced in the slitter-winder.
  • the system of producing of fiber webs comprises a head box, a forming section, a press section, a drying section, a reel-up and a slitter-winder, which system further comprises at least one trim cutting device located before the reel-up, preferably before the last drying cylinder of the drying section, advantageously at the end of the drying section for trimming the fiber web such, that at least one trim strip is removed from at least one edge of the fiber web to trim the fiber web to a fullwidth defined by total width of customer rolls to be produced from the fiber web in the slitter-winder.
  • the at least one trim cutting device is located at the end of the drying section, advantageously in the drying section at a location, where the fiber web is configured to run between two, following each other located drying cylinders or at a drying cylinder.
  • the system comprises at least one pulper and/or a reject conveyor leading to the/a pulper for receiving the trim strip removed from the fiber web by the trim cutting device.
  • the trim cutting device is a water jet cutting device, advantageously with high pressure water jet cutting nozzle, and on the opposite side of the fiber web in respect of the water jet cutting nozzle a suction pipe is arranged for removing from the fiber web detached matter during the cutting of the fiber web by the water jet cutting device to the pulper or to the reject conveyor leading to the pulper, which suction pipe has an away from the fiber web tapering form and/or its towards the fiber web located end has a trumpet-like form.
  • the trimming i.e. the cutting of the fiber web in the machine direction i.e. in longitudinal direction of the fiber web to the trim width defined by the total width of the customer rolls is performed before the reeling on the reel-up, advantageously in the drying section, of the fiber web production line.
  • the trimming a narrower fullwidth fiber web is provided.
  • the trim strips have a width of at least 150 mm, or even over 300 mm, more advantageously over 500 mm.
  • the width of the trim strips is adjustable.
  • the width of the fullwidth fiber web at the reel-up is defined such, that the trim strips on the slitter-winder are desired and as required by the trimming system and mechanical limitations of the slitter-winder.
  • the trim width is controlled based on information received from the slitter-winder.
  • the information of the required width of the fullwidth fiber web at the trim cutting is utilized for tension calculations of the tension of the fiber web and based on the information of the required width of the fullwidth fiber web at the trim cutting the reeling parameters, or example nip load adjustment, torque values of center drives, are controlled.
  • the information of the width of fullwidth fiber web at the trim cutting is transmitted to calculations of drives of the slitter-winder.
  • the changing width of the fiber web is covered by movements of core chucks of the winding section of the slitter-winder and if needed extensions for the core chucks can be used.
  • the cut trim strips are removed to a pulper, advantageously to a pulper located below the last drying cylinder of the drying section, or to a reject conveyor leading to a pulper.
  • the trimming i.e. the edge cutting of the fiber web is performed in the drying section of the fiber web production line at a location, where the fiber web runs between two, following each other located drying cylinders or at a drying cylinder or between last drying cylinder of the drying section and a guide roll following the last drying cylinder.
  • the trimming i.e. the edge cutting of the fiber web is performed by water jet cutting or by rotating blades or by laser cutting.
  • Water jet cutting is advantageous in view of dust forming during the cutting as it does not cause dusting.
  • water jet of the water jet cutting is a high pressure water jet, typically with pressure over 600 bar, advantageously over 1500 bar. The cleanliness is improved as pressure of the water jet increases.
  • the trimming is performed when the run of the fiber web is unsupported or supported.
  • threading of the fiber web is performed either as full width threading or as threading of a narrower, cut fiber web depending on concept of threading. For example, if threading is ropeless from the last drying cylinder or drive group, the threading can be performed with a narrower fiber web.
  • the fiber web is trimmed by cutting from least one edge of the fiber web in longitudinal direction of the fiber web a trim strip and the trim strip is removed from the system of producing of fiber webs at a different location in respect of location of the trimming after the trimming.
  • the trim strip is guided to a pulper or to a reject conveyor leading to a pulper.
  • the cutting is performed by a water-jet cutting device. This provides that no separate system for removing the trim strip is needed.
  • the fiber web is trimmed in the drying section by cutting at least one edge of the fiber web in longitudinal direction of the fiber web before or at a drying cylinder of the drying section such, that from the fiber web a trim strip is removed and the trim strip is removed from the drying section at a different location in respect of location of the trimming.
  • the trim strip is guided to a pulper or to a reject conveyor leading to a pulper.
  • the trim strip is removed from the drying section at a location on other side of the drying cylinder, before or at which the trim strip is cut, preferably by doctoring.
  • the cutting is performed by a water-jet cutting device. This provides that no separate system for removing the trim strip is needed.
  • the trim strip is guided to a pulper or to a reject conveyor leading to a pulper.
  • the cutting is performed by a water-jet cutting device. This provides that no separate system for removing the trim strip is needed.
  • the trim strip As the trim strip is cut already before the reel-up, preferably before the last drying cylinder of the drying section, advantageously at the end of the drying section based on the required with of the customer rolls to be produced in the slitter-winder.
  • the need of making extra fiber web trim rolls is eliminated or at least minimized.
  • the trim strips can be re-used in the process. Additionally, even eliminating the edge trimming at the slitter-winder may be achieved.
  • the possible slack edges caused by the drying shrinkage are removed before the slitter-winder and thus the outermost customer rolls i.e. edge rolls produced by the slitter-winder are of good quality.
  • FIG. 1 the production line of a fiber web product is shown very schematically and it is well understood by one skilled in the art that the actual production line for the fiber web product comprises several components, parts and devices which can be constructed in various ways known as such to one skilled in the art.
  • the production line for fiber webs comprises a head box 10, a wire section (i.e. forming section) 20 and a press section 30 as well as a subsequent drying section 40 a reel-up 80 and a slitter-winder 90.
  • the production line may also comprise a sizer 50 and a pre-calender 60 and a coating section 70.
  • the production line may also comprise a calender and/or a roll packaging apparatus or a sheet cutter. After the sizer 50 drying equipment is typically located to dry the fiber web and also after the coating section 70 typically drying equipment is located to dry the fiber web before reeling the fiber web in the reel-up 80 to a parent roll.
  • the wire section i.e.
  • the fiber web is dried, typically by contact drying by leading the fiber web to run in contact over heated surfaces of drying cylinders.
  • drying equipment which may comprise drying cylinders.
  • the fiber web is pre-calendered in the pre-calender 60 and at least one coating layer is applied onto the fiber web in the coating section 70.
  • the fiber web is reeled into the parent roll, which is unwound in an unwinder of the slitter-winder 90 and then slit into partial webs in a slitter, which are wound to customer rolls in the winder.
  • the customer roll may be packed in a roll packaging machine.
  • the fiber web may also be cut into sheets in a sheet cutter.
  • the fiber web production line comprises at least one trim cutting device 100 before the reel-up, preferably before the last drying cylinder of the drying section 80 for cutting the fiber web in longitudinal direction of the fiber web.
  • the trim cutting device 100 is advantageously located at the end of the forming section 20 and/or at the end of the drying section 40 and/or in connection with the possible drying equipment of the sizer 50 and/or of the coating section 70.
  • the location of the trim cutting device is such, that no supporting devices for the run of the fiber web at the cutting location is needed as tension of the fiber web W keeps the fiber web W at the cutting location supported.
  • the trim cutting device 100 is advantageously a water jet cutting device or a cutting device comprising rotating blades or a laser cutting device.
  • the trim cutting device 100 is positioned to a beginning point in width direction of the fiber web such, that trim strip of required width is provided to set the width of the fiber web to correspond to that required by the set of the customer rolls to be produced in the slitter-winder.
  • the trim cutting device 100 performs the trimming i.e. the edge cutting of the fiber web to the trim width defined by the total width of the customer rolls to be slitted and wound in the slitter-winder 90 and the trimming is performed before the reeling on the reel-up 80, advantageously in the drying section 40, of the fiber web production line.
  • the trim width is controlled based on information 105 of the required with for the set of the customer rolls to be produced in the slitter-winder 90.
  • the cut trim strip is cut in transverse direction after the longitudinal cutting.
  • the cut trim strip is removed to a pulper 115 or to a reject conveyor leading to a pulper 115.
  • the cut trim strip is removed directly to the pulper or to the reject conveyor by a doctor and no removal pipes or like equipment are needed.
  • FIG 2 is schematically shown end part of the drying section 40 comprising drying cylinders 41, 42 located in two rows.
  • the fiber web W runs alternating around one drying cylinder 41 in one row and around another cylinder 42 in the other row.
  • the trimming i.e. the edge cutting of the fiber web by the trim cutting device 100 is performed in the drying section 40 of the fiber web production line at a location, where the fiber web runs between two, following each other located drying cylinders 41, 42 ( fig. 2 ) or at a drying cylinder 42.
  • the trim cutting device comprises a water jet cutting nozzle 130 creating a high pressure water jet 135 by which the fiber web W is cut.
  • the water jet cutting nozzle 130 may also comprise at least one air blower 137 creating an air shield around the high pressure water jet 135 to avoid disturbances in the water jet 135.
  • a suction pipe 120 is arranged for removing from the fiber web W detached matter, such as cuttings, shearings, fibers, excessive water, in the cutting by the water jet 135.
  • the suction pipe 120 has an away from the fiber web W tapering form and its towards the fiber web W located end 125 has a trumpet-like form.
  • At the end 125 towards the fiber web W of the suction pipe 120 inside the suction pipe 120 may be arranged at least one water flushing means 127 to enhance the removal of the fiber web during the cutting detached matter and to keep the suction pipe 120 clean.
  • there might be along the run of the fiber web W at least one supporting means 140 for supporting the run of the fiber web W and for keeping the distance between the fiber web W and the end 125 of the suction pipe 120 steady and as desired.
  • the location of the trim cutting device is such, that no supporting devices for the run of the fiber web at the cutting location is needed as tension of the fiber web W keeps the fiber web W at the cutting location supported.
  • the trim cutting device 100 is positioned to a beginning point in width direction of the fiber web such, that trim strip of required width is provided to set the width of the fiber web to correspond to that required by the set of the customer rolls to be produced in the slitter-winder.
  • the water jet cutting device 130 and the suction pipe 120 are configured to be correspondingly movable.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
EP23151644.4A 2022-02-17 2023-01-16 Verfahren und system zur herstellung von faserbahnen Pending EP4230793A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20225142A FI131085B1 (en) 2022-02-17 2022-02-17 Method and system for the production of fiber webs

Publications (1)

Publication Number Publication Date
EP4230793A1 true EP4230793A1 (de) 2023-08-23

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ID=84981070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23151644.4A Pending EP4230793A1 (de) 2022-02-17 2023-01-16 Verfahren und system zur herstellung von faserbahnen

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EP (1) EP4230793A1 (de)
FI (1) FI131085B1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010025696A1 (en) * 2000-04-04 2001-10-04 Voith Paper Patent Gmbh Paper machine
US20020124701A1 (en) 2001-03-07 2002-09-12 Paprima Industries Inc. Water jet edge cutter with integral trim chute
US7166194B2 (en) 2002-04-20 2007-01-23 Voith Paper Patent Gmbh Water jet cutter
WO2009022053A1 (en) 2007-08-10 2009-02-19 Metso Paper, Inc. Trim strip slitting and removal arrangement and method of trim strip slitting and removal
EP3231936A1 (de) * 2016-04-11 2017-10-18 Valmet Technologies Oy Verfahren zur herstellung von faserbahnen und produktionslinie zum herstellen von faserbahnen
WO2018236264A1 (en) 2017-06-21 2018-12-27 Valmet Aktiebolag PAPER MACHINE AND METHOD FOR CUTTING A FIBROUS BAND IN A PAPER MACHINE
EP3855373A1 (de) 2020-01-24 2021-07-28 Honeywell Limited Planereinsicht für die flachblechindustrien

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010025696A1 (en) * 2000-04-04 2001-10-04 Voith Paper Patent Gmbh Paper machine
US20020124701A1 (en) 2001-03-07 2002-09-12 Paprima Industries Inc. Water jet edge cutter with integral trim chute
US7166194B2 (en) 2002-04-20 2007-01-23 Voith Paper Patent Gmbh Water jet cutter
WO2009022053A1 (en) 2007-08-10 2009-02-19 Metso Paper, Inc. Trim strip slitting and removal arrangement and method of trim strip slitting and removal
EP3231936A1 (de) * 2016-04-11 2017-10-18 Valmet Technologies Oy Verfahren zur herstellung von faserbahnen und produktionslinie zum herstellen von faserbahnen
WO2018236264A1 (en) 2017-06-21 2018-12-27 Valmet Aktiebolag PAPER MACHINE AND METHOD FOR CUTTING A FIBROUS BAND IN A PAPER MACHINE
EP3855373A1 (de) 2020-01-24 2021-07-28 Honeywell Limited Planereinsicht für die flachblechindustrien

Also Published As

Publication number Publication date
FI20225142A1 (en) 2023-08-18
FI131085B1 (en) 2024-09-17

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