EP4072981A1 - Winding device for winding a material web - Google Patents

Winding device for winding a material web

Info

Publication number
EP4072981A1
EP4072981A1 EP20775827.7A EP20775827A EP4072981A1 EP 4072981 A1 EP4072981 A1 EP 4072981A1 EP 20775827 A EP20775827 A EP 20775827A EP 4072981 A1 EP4072981 A1 EP 4072981A1
Authority
EP
European Patent Office
Prior art keywords
oscillating device
running direction
edges
winding
material webs
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
EP20775827.7A
Other languages
German (de)
French (fr)
Inventor
Matthias KÜKENSHÖNER
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP4072981A1 publication Critical patent/EP4072981A1/en
Pending legal-status Critical Current

Links

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
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • 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
    • B26D1/04—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 linearly-movable cutting member
    • B26D1/06—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 linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/065—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 linearly-movable cutting member wherein the cutting member reciprocates for thin material, e.g. for sheets, strips or the like
    • 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
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B26D5/06—Means for moving the cutting member into its operative position for cutting by electrical means
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/28—Folding in combination with 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
    • 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
    • B26D1/04—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 linearly-movable cutting member
    • B26D1/06—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 linearly-movable cutting member wherein the cutting member reciprocates
    • 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
    • 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
    • B65H2301/4143—Performing winding process
    • B65H2301/41432—Performing winding process special features of winding process
    • B65H2301/414322—Performing winding process special features of winding process oscillated winding, i.e. oscillating the axis of the winding roller or material
    • 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
    • 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
    • B65H2301/41485—Winding slitting winding on one single shaft or support
    • 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
    • B65H2301/41487—Winding slitting trimming edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • 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
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/112—Section geometry
    • B65H2701/1123—Folded article or web
    • B65H2701/11234—C-folded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic
    • B65H2701/1752—Polymer film
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1944—Wrapping or packing material

Definitions

  • Winding device for winding a web of material
  • the invention relates to a winding device for winding a material web running in one direction with at least one knife for cutting the material web in the direction of the web into several partial material webs and with a folding device for folding over the edges of the partial material webs.
  • Stretch films are used to secure and pack individual goods, for example sacks stacked on pallets.
  • the goods are wrapped with the stretch film so that the goods are connected to one another with the aid of the self-adhesive stretch film.
  • the edges of stretch films are often the starting point for a film to be torn off during wrapping and packaging. Damage to the edges or the edge of a roll of stretch film can make it unusable. Such damage occurs, for example, when the finished roll of stretch film is improperly transported or falls to the ground. It is known that by folding over or folding the edges before it is wound onto a roll, the stretch film becomes more resistant to damage and, as a result, fewer tears occur.
  • edges are folded over, if the film roll is wound with straight edges, an edge build-up occurs which also makes the film roll unusable.
  • folding the edges it is therefore necessary to remove the edges of the film to wind up on the roll offset to each other. This can be done, for example, by oscillating the roll to the side.
  • Folding element is provided and wherein each folding element produces two folded edges.
  • a winding device for winding up a running material web with at least one knife for cutting the material web in the direction of the web into several partial material webs and with a folding device for folding over the edges of the partial material webs is known.
  • the winding device comprises an oscillating device with which the at least one knife can be moved transversely to the web direction.
  • the folding units are arranged directly behind the knives and mechanically coupled to them. To fold the edges, folding units are used which fold over the two opposite edges of adjacent film webs together. It was observed here that wrinkles can arise on the film, which in turn can impair the function of the film.
  • the object of the invention is to provide a winding device which enables a material web with folded edges to be wound up with as little wrinkle as possible.
  • a folding element is provided for each edge of the partial material webs.
  • the at least one knife can be moved transversely to the direction of travel.
  • the folding elements for the left edges of the partial material webs seen in the running direction can be moved transversely to the running direction.
  • the folding elements for the right edges of the partial material webs seen in the direction of travel can be moved transversely to the direction of travel.
  • the first oscillating device, the second oscillating device and the third oscillating device can be controlled with a control unit in such a way that the folded edges of the partial material webs can be wound up offset.
  • the width of the folded edges can be adjusted with the winding device according to the invention. If the machine parameters change, the width of the folded edges can be kept constant by the control unit in a corresponding manner. In this way, the same number of film layers can always be wound up during a period of the oscillating knife, whereby the formation of wrinkles on the film can be effectively reduced.
  • the first oscillating device, the second oscillating device and the third oscillating device each consist of an eccentric driven by a motor.
  • the frequencies of the first oscillating device, the second oscillating device and the third oscillating device can be set separately via the control unit.
  • the flow of the first oscillating device, the second oscillating device and the third oscillating device can be set separately via the control unit.
  • the thickness profile of the wound roll is measured and forwarded to the control unit.
  • the web speed of the material web is measured and forwarded to the control unit.
  • the material web is a stretch film produced on a cast film line or on a blown film line.
  • Fig. 1 shows a basic representation of a cutter bar according to a first embodiment of the invention
  • Fig. 2 shows a basic representation of a cutter bar according to a second embodiment of the invention
  • Fig. 3 shows a plan view of a folding device according to the invention
  • FIG. 4 shows a perspective illustration of view A according to FIG. 3.
  • Fig. 1 shows a basic representation of a cutter bar according to a first embodiment of the invention.
  • the material web 101 is a stretch film produced on a cast film line.
  • the stretch film 101 is transported in the direction 102 and thus arrives at the cutter bar 103.
  • the cutter bar 103 is moved to and fro in the direction 104 by an oscillating device and has a total of 5 cutting knives 105.
  • a waste 111 and 112 is created on the left and right at the edges, which can be further processed for other purposes.
  • S-shaped strips 106, 107, 108 and 109 are created behind the cutter bar 103, namely approximately in the form shown in FIG. 1.
  • the S-shaped edge does not have to be uniform.
  • the amplitude and frequency of the movement of the oscillating device can also be irregular.
  • the individual knives 105 are activated individually and thus perform different movements.
  • Fig. 2 shows a basic representation of a cutter bar according to a second embodiment of the invention.
  • the material web 201 is again a stretch film produced on a cast film line.
  • the stretch film 201 is transported in the direction 202 and thus arrives at the cutter bar 203.
  • the cutter bar 203 is moved to and fro in the direction 204 by an oscillating device and has a total of 3 cutting knives 205. Since the outermost edges are left untrimmed on the left and right, in contrast to the embodiment according to FIG. 1, there is no waste.
  • S-shaped strips 206, 207, 208 and 209 are created behind the cutter bar 203, specifically in the form shown in FIG. 2.
  • the S-shaped edge does not have to be uniform.
  • the amplitude and frequency of the movement of the oscillating device can also be irregular.
  • the individual knives 205 are controlled individually and thus perform different movements.
  • FIG. 3 shows a plan view of a folding device according to the invention.
  • the folding device is located behind a cutter bar, seen in the running direction, for example as this was described in accordance with FIG. 1 or in accordance with FIG. 2.
  • the folding device consists of a cross member 301, a first guide rail 302 and a second guide rail 303 are attached.
  • In the running direction 304 run four partial material webs 305, 306, 307 and 308, which were previously separated on the cutter bar 103 or 203 from a material web running over the entire width.
  • the folding device is designed such that for each edge of the
  • Partial material webs 305, 306, 307 and 308 a folding element is provided.
  • the folding elements 309, 310, 311 and 312 are displaceably guided on the first guide rail 302 and thus fold over the left edges of the partial material webs 305, 306, 307 and 308 as seen in the running direction 304.
  • the second guide rail 303 In a corresponding manner, on the second guide rail 303, the
  • Folding elements 313, 314, 315 and 316 are guided displaceably, which thus fold over the right edges of the partial material webs 305, 306, 307 and 308 as seen in the running direction 304.
  • the folding elements 309, 310, 311 and 312 are connected to the gear rod 318, which is driven by an eccentric motor 317.
  • the folding elements 313, 314, 315 and 316 are connected to the gear rod 320, which is driven by an eccentric motor 319.
  • a first oscillating device has already been described with reference to the cutter bar 103 according to FIG. 1 or with reference to the cutter bar 203 according to FIG. 2.
  • the eccentric motor 317 also represents a second oscillating device with which the folding elements 309, 310, 311 and 312 for the left edges of the partial material webs seen in the direction of travel 304 can be moved transversely to the direction of travel 304.
  • the eccentric motor 319 represents a third oscillating device with which the folding elements 313, 314, 315 and 316 for the right-hand edges of the partial material webs viewed in the direction of travel 304 can be moved transversely to the direction of travel 304.
  • a rotary movement of the eccentric motor 317 is converted into a linear movement of the folding elements 309, 310, 311 and 312 transversely to the running direction 304.
  • the eccentric motor 317 does not rotate continuously, but executes an alternating partial rotation within a predetermined angular segment. With the opening angle of the angle segment, the stroke of the
  • Folding elements 309, 310, 311 and 312 can be adjusted. Furthermore, the frequency of the changing partial rotation corresponds to the movement frequency of the folding elements 309, 310, 311 and 312. If the lifting movements of the folding elements 309, 310, 311 and 312 and the folding elements 313, 314, 315 and 316 are carried out with an offset to one another, the The width of the folded edge can be set.
  • the frequency and stroke of the three oscillating units are coordinated with one another by a control unit in such a way that the folded edges of the partial material webs can be wound up offset, so that the above-mentioned edge build-up is avoided.
  • FIG. 4 shows a perspective illustration of view A according to FIG. 3. Identical parts are provided with the same reference numerals, so that in this respect reference is made to the description according to FIG. 3.
  • each folding element has a controllable lifting cylinder, only the lifting cylinder of the folding element 313 being identified with the reference numeral 401 for the sake of clarity in FIG. 4.
  • the lifting cylinder By means of the lifting cylinder, the folding elements can each be pivoted in or out with respect to the web path. In this way, the set-up time for a new order can be reduced, for example, in that the operator can control the simultaneous pivoting in of several folding elements via a corresponding machine command.
  • consequential damage in the event of malfunctions can be avoided by automatically pivoting the folding elements out of the web path when a malfunction is detected.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

The invention relates to a winding device for winding a material web (101, 201) running in a running direction, the winding device comprising: at least one blade (103, 203) for cutting the material web in the web direction to form a plurality of partial material webs (106, 107, 108, 109; 206, 207, 208, 209; 305, 306, 307, 308); and a fold-over device (301, 302, 303) for folding the edges of the partial material webs over. In order to provide a winding device that allows a material web with folded-over edges to be wound with as little creasing as possible, a fold-over element (309, 310, 311, 312) is provided for each edge of the partial material webs. The at least one blade (103, 203) can be moved perpendicularly to the running direction by means of a first oscillating device. The fold-over elements for the left edges of the partial material webs, as viewed in the running direction, can be moved perpendicularly to the running direction by means of a second oscillating device. The fold-over elements for the right edges of the partial material webs, as viewed in the running direction, can be moved perpendicularly to the running direction by means of a third oscillating device. The first oscillating device, the second oscillating device and the third oscillating device can be controlled by means of a control unit in such a way that the folded-over edges of the partial material webs can be wound at an offset.

Description

Wickelvorrichtung zum Aufwickeln einer Materialbahn Winding device for winding a web of material
Die Erfindung betrifft eine Wickelvorrichtung zum Aufwickeln einer in einer Laufrichtung laufenden Materialbahn mit mindestens einem Messer zum Auftrennen der Materialbahn in Bahnrichtung in mehrere Teilmaterialbahnen und mit einer Umfaltvorrichtung zum Umfalten der Kanten der Teilmaterialbahnen. The invention relates to a winding device for winding a material web running in one direction with at least one knife for cutting the material web in the direction of the web into several partial material webs and with a folding device for folding over the edges of the partial material webs.
Stretchfolien dienen zum Sichern und Verpacken von einzelnen Gütern, beispielsweise von auf Paletten gestapelte Säcke. Die Güter werden dabei mit der Stretchfolie umwickelt, sodass die Güter mithilfe der selbsthaftenden Stretchfolie miteinander verbunden werden. Es hat sich herausgestellt, dass die Ränder von Stretchfolien häufig Ausgangspunkt für einen Folienabriss während des Umwickelns und Verpackens sind. Beschädigungen an den Rändern bzw. an der Kante einer Stretchfolienrolle können diese unbrauchbar machen. Derartige Beschädigungen entstehen beispielsweise dann, wenn die fertig aufgewickelte Rolle einer Stretchfolie unsachgemäß transportiert wird oder zu Boden fällt. Es ist bekannt, dass die Stretchfolie durch ein Umfalten oder Falten der Ränder vor dem Aufwickeln auf eine Rolle resistenter gegenüber Beschädigungen wird und in der Folge weniger Abrisse auftreten. Allerdings führt ein Umfalten der Ränder auch dazu, dass bei kantengerader Wicklung der Folienrolle ein Kantenaufbau entsteht, der die Folienrolle ebenfalls unbrauchbar werden lässt. Beim Umfalten der Kanten ist es demzufolge erforderlich, die Ränder der Folie auf der Rolle versetzt zueinander zu aufzuwickeln. Dies kann beispielsweise durch ein seitliches Oszillieren des Wickels erfolgen. Stretch films are used to secure and pack individual goods, for example sacks stacked on pallets. The goods are wrapped with the stretch film so that the goods are connected to one another with the aid of the self-adhesive stretch film. It has been found that the edges of stretch films are often the starting point for a film to be torn off during wrapping and packaging. Damage to the edges or the edge of a roll of stretch film can make it unusable. Such damage occurs, for example, when the finished roll of stretch film is improperly transported or falls to the ground. It is known that by folding over or folding the edges before it is wound onto a roll, the stretch film becomes more resistant to damage and, as a result, fewer tears occur. However, if the edges are folded over, if the film roll is wound with straight edges, an edge build-up occurs which also makes the film roll unusable. When folding the edges, it is therefore necessary to remove the edges of the film to wind up on the roll offset to each other. This can be done, for example, by oscillating the roll to the side.
Aus US 8,221 ,298 B2 ist eine Vorrichtung zum Herstellen von umgefalteten Kanten einer Kunststoff-Folie bekannt, wobei hinter jedem Messer einA device for producing folded edges of a plastic film is known from US Pat. No. 8,221,298 B2, with one behind each knife
Umfaltelement vorgesehen ist und wobei jedes Umfaltelement zwei umgefaltete Kanten erzeugt. Folding element is provided and wherein each folding element produces two folded edges.
Aus WO 2015/055726 A1 ist eine Wickelvorrichtung zum Aufwickeln einer laufenden Materialbahn mit mindestens einem Messer zum Auftrennen der Materialbahn in Bahnrichtung in mehrere Teilmaterialbahnen und mit einer Faltvorrichtung zum Umfalten der Kanten der Teilmaterialbahnen bekannt. Die Wickelvorrichtung umfasst eine Oszilliervorrichtung, mit der das mindestens eine Messer quer zur Bahnrichtung bewegbar ist. From WO 2015/055726 A1 a winding device for winding up a running material web with at least one knife for cutting the material web in the direction of the web into several partial material webs and with a folding device for folding over the edges of the partial material webs is known. The winding device comprises an oscillating device with which the at least one knife can be moved transversely to the web direction.
Aus EP 2952459 B1 ist eine Vorrichtung und ein Verfahren zur Herstellung einer Anzahl aufgewickelter Folienrollen bekannt, wobei die Folien in ihrem Randbereich durch Umfalten verstärkt sind. Die seitlichen Endabschnitte zweier nebeneinander angeordneter Folienabschnitte werden dabei mittels zweier benachbarter Umfaltelemente umgefaltet. From EP 2952459 B1 a device and a method for producing a number of wound rolls of film are known, the edges of the films being reinforced by being folded over. The lateral end sections of two film sections arranged next to one another are folded over by means of two adjacent folding elements.
Bei den bekannten Wickelvorrichtungen sind die Falteinheiten direkt hinter den Messern angeordnet und mechanisch mit ihnen gekoppelt. Zum Falten der Kanten werden Falteinheiten eingesetzt, die die beiden gegenüberliegenden Kanten von benachbarten Folienbahnen gemeinsam umfalten. Hierbei wurde beobachtet, dass auf der Folie Falten entstehen können, die ihrerseits die Funktion der Folie beeinträchtigen können. In the known winding devices, the folding units are arranged directly behind the knives and mechanically coupled to them. To fold the edges, folding units are used which fold over the two opposite edges of adjacent film webs together. It was observed here that wrinkles can arise on the film, which in turn can impair the function of the film.
Hiervon ausgehend ist es Aufgabe der Erfindung, eine Wickelvorrichtung bereitzustellen, die ein möglichst faltenfreies Aufwickeln einer Materialbahn mit umgefalteten Kanten ermöglicht. Proceeding from this, the object of the invention is to provide a winding device which enables a material web with folded edges to be wound up with as little wrinkle as possible.
Diese Aufgabe wird durch eine Wickelvorrichtung nach dem Patentanspruch 1 gelöst. Bevorzugte Ausführungsformen ergeben sich aus den Unteransprüchen. Erfindungsgemäß ist für jede Kante der Teilmaterialbahnen ein Umfaltelement vorgesehen. Mit einer ersten Oszilliervorrichtung ist das mindestens eine Messer quer zur Laufrichtung bewegbar. Mit einer zweiten Oszilliervorrichtung sind die Umfaltelemente für die in Laufrichtung gesehen linken Kanten der Teilmaterialbahnen quer zur Laufrichtung bewegbar. Mit einer dritten Oszilliervorrichtung sind die Umfaltelemente für die in Laufrichtung gesehen rechten Kanten der Teilmaterialbahnen quer zur Laufrichtung bewegbar. Mit einer Steuereinheit sind die erste Oszilliervorrichtung, die zweite Oszilliervorrichtung und die dritte Oszilliervorrichtung derart ansteuerbar, dass die umgefalteten Kanten der Teilmaterialbahnen versetzt aufwickelbar sind. This object is achieved by a winding device according to claim 1. Preferred embodiments emerge from the subclaims. According to the invention, a folding element is provided for each edge of the partial material webs. With a first oscillating device, the at least one knife can be moved transversely to the direction of travel. With a second oscillating device, the folding elements for the left edges of the partial material webs seen in the running direction can be moved transversely to the running direction. With a third oscillating device, the folding elements for the right edges of the partial material webs seen in the direction of travel can be moved transversely to the direction of travel. The first oscillating device, the second oscillating device and the third oscillating device can be controlled with a control unit in such a way that the folded edges of the partial material webs can be wound up offset.
Im Gegensatz zu den bekannten Wickelvorrichtungen ist mit der erfindungsgemäßen Wickelvorrichtung die Breite der umgefalteten Kanten einstellbar. Bei sich ändernden Maschinenparametern kann in entsprechender Weise die Breite der umgefalteten Kanten von der Steuereinheit konstant gehalten werden. Auf diese Weise kann immer die gleiche Anzahl an Folienlagen während einer Periode der oszillierenden Messer aufgewickelt werden, wodurch die Entstehung von Falten auf der Folie wirksam reduziert werden kann. In contrast to the known winding devices, the width of the folded edges can be adjusted with the winding device according to the invention. If the machine parameters change, the width of the folded edges can be kept constant by the control unit in a corresponding manner. In this way, the same number of film layers can always be wound up during a period of the oscillating knife, whereby the formation of wrinkles on the film can be effectively reduced.
Nach einer bevorzugten Ausführungsform ist vorgesehen, dass die erste Oszilliervorrichtung, die zweite Oszilliervorrichtung und die dritte Oszilliervorrichtung jeweils aus einem von einem Motor angetriebenen Exzenter bestehen. According to a preferred embodiment it is provided that the first oscillating device, the second oscillating device and the third oscillating device each consist of an eccentric driven by a motor.
Nach einerweiteren bevorzugten Ausführungsform ist vorgesehen, dass über die Steuereinheit die Frequenzen der ersten Oszilliervorrichtung, der zweiten Oszilliervorrichtung und der dritten Oszilliervorrichtung getrennt einstellbar sind. According to a further preferred embodiment, it is provided that the frequencies of the first oscillating device, the second oscillating device and the third oscillating device can be set separately via the control unit.
Nach einerweiteren bevorzugten Ausführungsform ist vorgesehen, dass über die Steuereinheit die Flübe der ersten Oszilliervorrichtung, der zweiten Oszilliervorrichtung und der dritten Oszilliervorrichtung getrennt einstellbar sind. Nach einerweiteren bevorzugten Ausführungsform ist vorgesehen, dass das Dickenprofil der aufgewickelten Rolle gemessen und an die Steuereinheit weitergeleitet wird. Nach einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass die Bahngeschwindigkeit der Materialbahn gemessen und an die Steuereinheit weitergeleitet wird. According to a further preferred embodiment, it is provided that the flow of the first oscillating device, the second oscillating device and the third oscillating device can be set separately via the control unit. According to a further preferred embodiment it is provided that the thickness profile of the wound roll is measured and forwarded to the control unit. According to a further preferred embodiment it is provided that the web speed of the material web is measured and forwarded to the control unit.
Nach einerweiteren bevorzugten Ausführungsform ist vorgesehen, dass die Materialbahn eine auf einer Gießfolienanlage oder auf einer Blasfolienanlage hergestellte Stretchfolie ist. According to a further preferred embodiment, it is provided that the material web is a stretch film produced on a cast film line or on a blown film line.
Weitere Einzelheiten und Vorteile der Erfindung werden anhand der beigefügten Zeichnungen beschrieben. Further details and advantages of the invention are described with reference to the accompanying drawings.
Fig. 1 zeigt eine prinzipielle Darstellung eines Messerbalkens gemäß einer ersten Ausführungsform der Erfindung, Fig. 1 shows a basic representation of a cutter bar according to a first embodiment of the invention,
Fig. 2 zeigt eine prinzipielle Darstellung eines Messerbalkens gemäß einer zweiten Ausführungsform der Erfindung, Fig. 2 shows a basic representation of a cutter bar according to a second embodiment of the invention,
Fig. 3 zeigt eine Draufsicht einer erfindungsgemäßen Umfaltvorrichtung und Fig. 3 shows a plan view of a folding device according to the invention and
Fig. 4 zeigt eine perspektivische Darstellung der Ansicht A gemäß Fig. 3. FIG. 4 shows a perspective illustration of view A according to FIG. 3.
Fig. 1 zeigt eine prinzipielle Darstellung eines Messerbalkens gemäß einer ersten Ausführungsform der Erfindung. Bei der Materialbahn 101 handelt es sich um eine auf einer Gießfolienanlage hergestellte Stretchfolie. Fig. 1 shows a basic representation of a cutter bar according to a first embodiment of the invention. The material web 101 is a stretch film produced on a cast film line.
Die Stretchfolie 101 wird nach ihrer Fierstellung in die Richtung 102 transportiert und gelangt damit an den Messerbalken 103. Der Messerbalken 103 wird durch eine Oszilliervorrichtung in die Richtung 104 hin- und herbewegt und weist insgesamt 5 Schneidmesser 105 auf. An den Rändern entsteht links und rechts jeweils ein Verschnitt 111 und 112, der für andere Zwecke weiterverarbeitet werden kann. Hinter dem Messerbalken 103 entstehen S-förmige Streifen 106, 107, 108 und 109, und zwar etwa in der Form, wie diese in Fig. 1 dargestellt sind. Der S-förmige Rand muss dabei keineswegs gleichförmig sein. Amplitude und Frequenz der Bewegung der Oszilliervorrichtung können auch unregelmäßig sein. Darüber hinaus ist es auch denkbar, dass die einzelnen Messer 105 einzeln angesteuert werden und somit verschiedene Bewegungen ausführen. After its folding position, the stretch film 101 is transported in the direction 102 and thus arrives at the cutter bar 103. The cutter bar 103 is moved to and fro in the direction 104 by an oscillating device and has a total of 5 cutting knives 105. A waste 111 and 112 is created on the left and right at the edges, which can be further processed for other purposes. S-shaped strips 106, 107, 108 and 109 are created behind the cutter bar 103, namely approximately in the form shown in FIG. 1. The S-shaped edge does not have to be uniform. The amplitude and frequency of the movement of the oscillating device can also be irregular. In addition, it is also conceivable that the individual knives 105 are activated individually and thus perform different movements.
Fig. 2 zeigt eine prinzipielle Darstellung eines Messerbalkens gemäß einer zweiten Ausführungsform der Erfindung. Bei der Materialbahn 201 handelt es sich wiederum um eine auf einer Gießfolienanlage hergestellte Stretchfolie. Fig. 2 shows a basic representation of a cutter bar according to a second embodiment of the invention. The material web 201 is again a stretch film produced on a cast film line.
Die Stretchfolie 201 wird nach ihrer Herstellung in die Richtung 202 transportiert und gelangt damit an den Messerbalken 203. Der Messerbalken 203 wird durch eine Oszilliervorrichtung in die Richtung 204 hin- und herbewegt und weist insgesamt 3 Schneidmesser 205 auf. Da die äußersten Ränder links und rechts unbeschnitten gelassen werden, entsteht im Gegensatz zu der Ausführungsform gemäß Fig. 1 kein Verschnitt. After its production, the stretch film 201 is transported in the direction 202 and thus arrives at the cutter bar 203. The cutter bar 203 is moved to and fro in the direction 204 by an oscillating device and has a total of 3 cutting knives 205. Since the outermost edges are left untrimmed on the left and right, in contrast to the embodiment according to FIG. 1, there is no waste.
Hinter dem Messerbalken 203 entstehen S-förmige Streifen 206, 207, 208 und 209, und zwar etwa in der Form, wie diese in Fig. 2 dargestellt sind. DerS-shaped strips 206, 207, 208 and 209 are created behind the cutter bar 203, specifically in the form shown in FIG. 2. Of the
S-förmige Rand muss dabei keineswegs gleichförmig sein. Amplitude und Frequenz der Bewegung der Oszilliervorrichtung können auch unregelmäßig sein. Darüber hinaus ist es auch denkbar, dass die einzelnen Messer 205 einzeln angesteuert werden und somit verschiedene Bewegungen ausführen. The S-shaped edge does not have to be uniform. The amplitude and frequency of the movement of the oscillating device can also be irregular. In addition, it is also conceivable that the individual knives 205 are controlled individually and thus perform different movements.
Die äußeren Streifen 206 und 209 weisen jeweils einen geraden und einen S-förmigen Rand auf und werden in dieser Form für spezielle Zwecke weiterverarbeitet. Fig. 3 zeigt eine Draufsicht einer erfindungsgemäßen Umfaltvorrichtung. Die Umfaltvorrichtung befindet sich in Laufrichtung gesehen hinter einem Messerbalken, zum Beispiel wie dieser gemäß Fig. 1 oder gemäß Fig. 2 beschrieben wurde. Die Umfaltvorrichtung besteht aus einer Traverse 301 , an eine erste Führungsschiene 302 und eine zweite Führungsschiene 303 befestigt sind. In Laufrichtung 304 laufen vier Teilmaterialbahnen 305, 306, 307 und 308, die zuvor an dem Messerbalken 103 bzw. 203 aus einer über die gesamte Breite laufenden Materialbahn aufgetrennt wurden. Die Umfaltvorrichtung ist derart ausgestaltet, dass für jede Kante derThe outer strips 206 and 209 each have a straight and an S-shaped edge and are further processed in this form for special purposes. Fig. 3 shows a plan view of a folding device according to the invention. The folding device is located behind a cutter bar, seen in the running direction, for example as this was described in accordance with FIG. 1 or in accordance with FIG. 2. The folding device consists of a cross member 301, a first guide rail 302 and a second guide rail 303 are attached. In the running direction 304 run four partial material webs 305, 306, 307 and 308, which were previously separated on the cutter bar 103 or 203 from a material web running over the entire width. The folding device is designed such that for each edge of the
Teilmaterialbahnen 305, 306, 307 und 308 ein Umfaltelement vorgesehen ist. An der ersten Führungsschiene 302 sind die Umfaltelemente 309, 310, 311 und 312 verschieblich geführt, die somit die in Laufrichtung 304 gesehen die linken Kanten der Teilmaterialbahnen 305, 306, 307 und 308 umfalten. In entsprechender Weise sind an der zweiten Führungsschiene 303 diePartial material webs 305, 306, 307 and 308 a folding element is provided. The folding elements 309, 310, 311 and 312 are displaceably guided on the first guide rail 302 and thus fold over the left edges of the partial material webs 305, 306, 307 and 308 as seen in the running direction 304. In a corresponding manner, on the second guide rail 303, the
Umfaltelemente 313, 314, 315 und 316 verschieblich geführt, die somit die in Laufrichtung 304 gesehen die rechten Kanten der Teilmaterialbahnen 305, 306, 307 und 308 umfalten. Die Umfaltelemente 309, 310, 311 und 312 sind mit der Getriebestange 318 verbunden, die von einem Exzentermotor 317 angetrieben wird. In entsprechender Weise sind die Umfaltelemente 313, 314, 315 und 316 mit der Getriebestange 320 verbunden, die von einem Exzentermotor 319 angetrieben wird. Folding elements 313, 314, 315 and 316 are guided displaceably, which thus fold over the right edges of the partial material webs 305, 306, 307 and 308 as seen in the running direction 304. The folding elements 309, 310, 311 and 312 are connected to the gear rod 318, which is driven by an eccentric motor 317. In a corresponding manner, the folding elements 313, 314, 315 and 316 are connected to the gear rod 320, which is driven by an eccentric motor 319.
Eine erste Oszilliervorrichtung wurde bereits mit Bezug auf den Messerbalken 103 gemäß Fig. 1 bzw. mit Bezug auf den Messerbalken 203 gemäß Fig. 2 beschrieben. Der Exzentermotor 317 stellt darüber hinaus eine zweite Oszilliervorrichtung dar, mit der die Umfaltelemente 309, 310, 311 und 312 für die in Laufrichtung 304 gesehen linken Kanten der Teilmaterialbahnen quer zur Laufrichtung 304 bewegbar sind. In entsprechender Weise stellt der Exzentermotor 319 eine dritte Oszilliervorrichtung dar, mit der die Umfaltelemente 313, 314, 315 und 316 für die in Laufrichtung 304 gesehen rechten Kanten der Teilmaterialbahnen quer zur Laufrichtung 304 bewegbar sind. A first oscillating device has already been described with reference to the cutter bar 103 according to FIG. 1 or with reference to the cutter bar 203 according to FIG. 2. The eccentric motor 317 also represents a second oscillating device with which the folding elements 309, 310, 311 and 312 for the left edges of the partial material webs seen in the direction of travel 304 can be moved transversely to the direction of travel 304. In a corresponding manner, the eccentric motor 319 represents a third oscillating device with which the folding elements 313, 314, 315 and 316 for the right-hand edges of the partial material webs viewed in the direction of travel 304 can be moved transversely to the direction of travel 304.
Im Folgenden wird die Funktionsweise der zweiten Oszilliervorrichtung beschrieben. Entsprechendes gilt auch für die dritte Oszilliervorrichtung. Eine Drehbewebung des Exzentermotors 317 wird in eine Linearbewegung der Umfaltelemente 309, 310, 311 und 312 quer zur Laufrichtung 304 umgesetzt. Der Exzentermotor 317 läuft dabei nicht kontinuierlich um, sondern führt eine wechselnde Teildrehung innerhalb eines vorgegebenen Winkelsegments aus. Mit dem Öffnungswinkel des Winkelsegments kann damit der Hub derThe mode of operation of the second oscillating device is described below. The same also applies to the third oscillating device. A rotary movement of the eccentric motor 317 is converted into a linear movement of the folding elements 309, 310, 311 and 312 transversely to the running direction 304. The eccentric motor 317 does not rotate continuously, but executes an alternating partial rotation within a predetermined angular segment. With the opening angle of the angle segment, the stroke of the
Umfaltelemente 309, 310, 311 und 312 eingestellt werden. Weiterhin entspricht die Frequenz der wechselnden Teildrehung der Bewegungsfrequenz der Umfaltelemente 309, 310, 311 und 312. Werden die Hubbewegungen der Umfaltelemente 309, 310, 311 und 312 sowie der Umfaltelemente 313, 314, 315 und 316 mit einem Offset zueinander ausgeführt, kann darüber die Breite der umgefalteten Kante eingestellt werden. Folding elements 309, 310, 311 and 312 can be adjusted. Furthermore, the frequency of the changing partial rotation corresponds to the movement frequency of the folding elements 309, 310, 311 and 312. If the lifting movements of the folding elements 309, 310, 311 and 312 and the folding elements 313, 314, 315 and 316 are carried out with an offset to one another, the The width of the folded edge can be set.
Frequenz und Hub der drei Oszilliereinheiten werden durch eine Steuereinheit derart aufeinander abgestimmt, dass die umgefalteten Kanten der Teilmaterialbahnen versetzt aufwickelbar sind, sodass der oben erwähnte Kantenaufbau vermieden wird. The frequency and stroke of the three oscillating units are coordinated with one another by a control unit in such a way that the folded edges of the partial material webs can be wound up offset, so that the above-mentioned edge build-up is avoided.
Fig. 4 zeigt eine perspektivische Darstellung der Ansicht A gemäß Fig. 3. Gleiche Teile sind mit gleichen Bezugszeichen versehen, sodass insoweit auf die Beschreibung gemäß Fig. 3 verwiesen wird. Darüber hinaus ist in der Darstellung gemäß Fig. 4 zu erkennen, dass jedes Umfaltelement einen ansteuerbaren Hubzylinder aufweist, wobei der Übersichtlichkeit halber in Fig. 4 nur der Hubzylinder von dem Umfaltelement 313 mit dem Bezugszeichen 401 gekennzeichnet ist. Mittels des Hubzylinders können die Umfaltelemente jeweils mit Bezug auf den Bahnweg hineingeschwenkt bzw. herausgeschwenkt werden. Auf diese Weise lässt sich beispielsweise die Rüstzeit für einen neuen Auftrag verringern, indem der Bediener das gleichzeitige Hineinschwenken mehrerer Umfaltelemente über einen entsprechenden Maschinenbefehl steuern kann. Außerdem können Folgeschäden bei Störungen vermieden werden, indem die Umfaltelemente bei Erkennen einer Störung automatisch aus dem Bahnweg herausgeschwenkt werden. FIG. 4 shows a perspective illustration of view A according to FIG. 3. Identical parts are provided with the same reference numerals, so that in this respect reference is made to the description according to FIG. 3. In addition, it can be seen in the illustration according to FIG. 4 that each folding element has a controllable lifting cylinder, only the lifting cylinder of the folding element 313 being identified with the reference numeral 401 for the sake of clarity in FIG. 4. By means of the lifting cylinder, the folding elements can each be pivoted in or out with respect to the web path. In this way, the set-up time for a new order can be reduced, for example, in that the operator can control the simultaneous pivoting in of several folding elements via a corresponding machine command. In addition, consequential damage in the event of malfunctions can be avoided by automatically pivoting the folding elements out of the web path when a malfunction is detected.

Claims

Patentansprüche Claims
1. Wickelvorrichtung zum Aufwickeln einer in einer Laufrichtung laufenden Mate rialbahn, mit mindestens einem Messer zum Auftrennen der Materialbahn in Laufrich tung in mehrere Teilmaterialbahnen, mit mehreren Umfaltelementen zum Umfalten der Kanten der Teilmaterialbah nen, wobei für jede Kante der Teilmaterialbahnen ein Umfaltelement vorgese hen ist, mit einer ersten Oszilliervorrichtung, mit der das mindestens eine Messer quer zur Laufrichtung bewegbar ist, mit einer zweiten Oszilliervorrichtung, mit der die Umfaltelemente für die in Laufrichtung gesehen linken Kanten der Teilmaterialbahnen quer zur Laufrich tung bewegbar sind, mit einer dritten Oszilliervorrichtung, mit der die Umfaltelemente für die in Laufrichtung gesehen rechten Kanten der Teilmaterialbahnen quer zur Lauf richtung bewegbar sind, und mit einer Steuereinheit zum Ansteuern der ersten Oszilliervorrichtung, der zweiten Oszilliervorrichtung und der dritten Oszilliervorrichtung derart, dass die umgefalteten Kanten der Teilmaterialbahnen versetzt aufwickelbar sind. 1. Winder for winding a running mate rialbahn in a running direction, with at least one knife for cutting the web of material in running direction in several partial material webs, with several folding elements for folding the edges of the partial material webs NEN, with a folding element vorgese hen for each edge of the partial material webs , with a first oscillating device with which the at least one knife can be moved transversely to the running direction, with a second oscillating device with which the folding elements for the left edges of the partial material webs seen in the running direction can be moved transversely to the running direction, with a third oscillating device with which the folding elements for the right edges of the partial material webs seen in the running direction can be moved transversely to the running direction, and with a control unit for controlling the first oscillating device, the second oscillating device and the third oscillating device in such a way that the folded edges of the partial material webs can be wound up offset.
2. Wickelvorrichtung nach Anspruch 1 , wobei die erste Oszilliervorrichtung, die zweite Oszilliervorrichtung und die dritte Oszilliervorrichtung jeweils aus einem von einem Motor angetriebenen Exzenter bestehen. 2. Winding device according to claim 1, wherein the first oscillating device, the second oscillating device and the third oscillating device each consist of an eccentric driven by a motor.
3. Wickelvorrichtung nach einem der Ansprüche 1 - 2, wobei über die Steuerein heit die Breite der umgefalteten Kanten einstellbar ist. 3. Winding device according to one of claims 1-2, wherein the width of the folded edges is adjustable via the control unit.
4. Wickelvorrichtung nach einem der Ansprüche 1 - 3, wobei über die Steuerein heit die Frequenzen der ersten Oszilliervorrichtung, der zweiten Oszilliervor richtung und der dritten Oszilliervorrichtung getrennt einstellbar sind. 4. Winding device according to one of claims 1-3, wherein the frequencies of the first oscillating device, the second oscillating device and the third oscillating device can be set separately via the control unit.
5. Wickelvorrichtung nach einem der Ansprüche 1 - 4, wobei über die Steuerein heit die Hübe der ersten Oszilliervorrichtung, der zweiten Oszilliervorrichtung und der dritten Oszilliervorrichtung getrennt einstellbar sind. 5. Winding device according to one of claims 1-4, the strokes of the first oscillating device, the second oscillating device and the third oscillating device being separately adjustable via the control unit.
6. Wickelvorrichtung nach einem der Ansprüche 1 - 5, wobei das Dickenprofil der aufgewickelten Rolle gemessen und an die Steuereinheit weitergeleitet wird. 6. Winding device according to one of claims 1-5, wherein the thickness profile of the wound roll is measured and forwarded to the control unit.
7. Wickelvorrichtung nach einem der Ansprüche 1 - 6, wobei die Bahngeschwin digkeit der Materialbahn gemessen und an die Steuereinheit weitergeleitet wird. 7. Winding device according to one of claims 1 - 6, wherein the Bahngeschwin speed of the material web is measured and forwarded to the control unit.
8. Wickelvorrichtung nach einem der Ansprüche 1 - 7, wobei die Materialbahn eine auf einer Gießfolienanlage oder auf einer Blasfolienanlage hergestellte Stretchfolie ist. 8. Winding device according to one of claims 1-7, wherein the material web is a stretch film produced on a cast film line or on a blown film line.
EP20775827.7A 2019-09-18 2020-09-09 Winding device for winding a material web Pending EP4072981A1 (en)

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DE102019125179 2019-09-18
PCT/EP2020/075142 WO2021052826A1 (en) 2019-09-18 2020-09-09 Winding device for winding a material web

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US3536273A (en) * 1969-02-07 1970-10-27 Du Pont Method of and apparatus for winding a web of plastic film
US20100015422A1 (en) * 2008-07-21 2010-01-21 Paragon Films, Inc. Oriented Film Produced In-Process for Use in the Stretch Film Market
US20150284207A1 (en) * 2013-01-31 2015-10-08 Anthony Galea Method and apparatus for fabricating stretch film rolls
US20140208905A1 (en) * 2013-01-31 2014-07-31 Anthony Galea Method and apparatus for fabricating stretch film rolls
DE102014205173A1 (en) 2013-10-15 2015-04-16 Windmöller & Hölscher Kg winder
DE102014006933B4 (en) 2014-05-10 2016-02-25 Sml Maschinengesellschaft M.B.H. Method and device for producing a number of wound film rolls

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