EP0878425B1 - Maschine zum Wickeln von Folie, Verfahren zum Herstellen von Rollen aus vorgedehnter Folie und mit diesem Verfahren hergestellte Rollen - Google Patents

Maschine zum Wickeln von Folie, Verfahren zum Herstellen von Rollen aus vorgedehnter Folie und mit diesem Verfahren hergestellte Rollen Download PDF

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Publication number
EP0878425B1
EP0878425B1 EP98401058A EP98401058A EP0878425B1 EP 0878425 B1 EP0878425 B1 EP 0878425B1 EP 98401058 A EP98401058 A EP 98401058A EP 98401058 A EP98401058 A EP 98401058A EP 0878425 B1 EP0878425 B1 EP 0878425B1
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EP
European Patent Office
Prior art keywords
bobbin
film
reception
fact
axis
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.)
Expired - Lifetime
Application number
EP98401058A
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English (en)
French (fr)
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EP0878425A1 (de
Inventor
Jean-Paul Martin-Cocher
Georges Jaconelli
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Signode France SAS
Original Assignee
ITW Mima Systems SA
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Publication of EP0878425A1 publication Critical patent/EP0878425A1/de
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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
    • B65H18/28—Wound package of webs
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/512—Changing form of handled material
    • B65H2301/5124—Stretching; Tentering

Definitions

  • the present invention mainly relates to a film winding machine, to a process for manufacturing reels of pre-stretched films and reels of pre-stretched films obtained by said process.
  • the prior stretching advantageously includes a step of unwinding of the film from a supply reel, a stretching step and, a step of winding the stretched film on a mandrel or a reel of receipt, pending further use.
  • the stretch film immediately undergoes a stretch relaxation which leads, during a period substantially equal to 48 hours, to a relaxation of the elastic restoring force substantially equal to 50%.
  • Pre-stretched films of known type are wound on cylindrical mandrels.
  • the film is unwound from the core to be wrapped, by example helically around a load to be overwrapped.
  • the pre-stretched stretch film wound on a chuck turned out to be particularly fragile.
  • a fall on the ground risking by example of creating areas of least resistance or holes in the edge of the film.
  • Such areas of least resistance or such holes at the level of the edge of the film can form tear primers when overpacking of a load or, more seriously, during handling or the transport of the overpacked load with risk of dislocation of a such charge.
  • US-A-5,531,393 describes a machine for early drawing of a stretch film ensuring the texturing of the film to facilitate its unwinding. The edges of the film are folded. A horizontal reciprocating movement of the take-up reel distributes the resulting excess thickness.
  • GB-A-2 288 594 describes a device provided with means for winding the film on a reel with a horizontal axis driven by a reciprocating movement.
  • the main object of the invention is a machine for wind pre-stretched film from a supply reel to a reel for receiving pre-stretched films comprising means for driving rotation of the reel for receiving the pre-stretched films and / or the reel film supply, characterized in that it comprises means relative drive of said supply coil relative to said receiving coil so as to periodically vary the position of the edges of the film along the axis of the receiving reel, so that the edge of the wound film has a frustoconical or substantially conical profile.
  • the invention also relates to a machine, characterized in that the relative drive means of the supply coil by in relation to the receiving coil ensure a range of movement relative allowing the formation on said coil of reception of a profile frustoconical or substantially conical at the edge of the film forming with an axis of the receiving coil an angle ⁇ between 1 ° and 80 °.
  • the invention also relates to a machine, characterized in what the relative drive means of the supply coil by in relation to the receiving coil ensure a range of movement relative allowing the formation on said coil of reception of a profile frustoconical or substantially conical at the edge of the film forming with an axis of the receiving coil an angle ⁇ between 3 ° and 45 °.
  • the invention also relates to a machine, characterized in what it includes alternative drive means oscillating from the supply coil parallel to its axis and / or means alternating drive oscillating the receiving coil parallel to its axis.
  • the invention also relates to a machine, characterized in that the alternative drive means comprise an elliptical roller, eccentric oval or the like, rotated along an orthogonal axis to the axis of rotation of the supply coil and / or the reception; said roller driving said supply coil and / or reception parallel to said spindle rotation axis.
  • the alternative drive means comprise an elliptical roller, eccentric oval or the like, rotated along an orthogonal axis to the axis of rotation of the supply coil and / or the reception; said roller driving said supply coil and / or reception parallel to said spindle rotation axis.
  • the invention also relates to a machine, characterized in which it further comprises means for stretching a stretch film, film guiding means, film winding means stretched on the receiving coil.
  • the invention also relates to a machine, characterized in that it further comprises means for partially relaxing the mechanical tension in the film after stretching and before it is wound on the receiving coil.
  • the invention also relates to a method of winding pre-stretched films comprising a step of stretching a film and a step of winding of the stretched film on a take-up reel characterized in that, when of the winding, a relative movement of the supply means is ensured films and the take-up reel so that the position of the edges of the film along the axis of the take-up reel, so the edge of the wound film has a profile on the take-up reel frustoconical or substantially conical.
  • the invention also relates to a method, characterized in what the relative displacements of the film supply means by relation to the receiving coil is a displacement of a coil supply parallel to its axis and / or a receiving coil parallel to its axis.
  • the invention also relates to a process, characterized in that that the amplitude of the displacement is between 1% and 4%, preferably between 2% and 2.4%, the width of the width of the film.
  • the invention also relates to a method, characterized in what we do the winding with periodic variation of the position of the edges of the film along the axis of the receiving reel, at the outlet of the means stretching of the film.
  • the invention also relates to a process, characterized in that that ensures the oscillating reciprocating movement of the supply coil parallel to its axis.
  • the subject of the invention is also a method, characterized in that an overwrap film having been stretched under a tension between 10 and 20 N / mm 2 of initial width section is wound on the receiving reel. that the winding and the relaxation of the film on the take-up reel take place under a mechanical tension comprised between 10 and 90% of the stretching tension.
  • the subject of the invention is also a reel of pre-stretched film, characterized in that it was obtained by such a process.
  • the subject of the invention is also a film reel, characterized in that the ratio of mechanical tension in the wound film in the central part of the film reel in relation to the tension in the selvedges is between 1 and 5, preferably between 1 and 3, so more preferred between 1.5 and 2.5.
  • the invention also relates to a coil, characterized in that that the frustoconical or substantially conical profile forms with the axis of the coil at an angle ⁇ between 1 ° and 80 °.
  • the invention also relates to a coil, characterized in that that the frustoconical or substantially conical profit forms with the axis (5) of the coil at an angle ⁇ between 3 ° and 45 °.
  • FIGS. 1 to 11 the same references have been used for designate the same elements.
  • the tension in the film 2 at the edge 7 is significantly higher, for example equal to 1.4 N / cm, than that prevailing in the central part of the film 2 between the selvedges 7, for example equal to 0.7 N / cm for a film having a thickness of 20 to 23 ⁇ m and a width of width of 500 mm.
  • This localized overvoltage weakens the film while making it more difficult to unfold.
  • the junction between the flank 9 and the edge 7 presents a small surface which, in the event of a coil 1 falling and counts given the overvoltage prevailing in the edge 7, risk of generating zones lower resistance, micro-tears or micro-openings likely to form tear primers during processing of the film.
  • the reels 1 of known type are braked by application of the operator's fingers on the sides 9 of film 2 and / or on an internal surface 11 of mandrel 3.
  • Application fingers on the side 9 during the unwinding of the film that is to say at the level of the edge of these films where it is most fragile because subjected to tension important mechanics, increases the chances of tearing of the film.
  • the edge 21 advantageously has a frustoconical profile or substantially conical, as illustrated in Figures 3 and 4, forming with the axis 5 of the mandrel 17 an angle ⁇ between 1 ° and 80 °, preferably between between 3 ° and 45 °, for example equal to 33 °, 40 ° or 45 °.
  • a reduction in the angle facilitates the unfolding of the film but reduces the amount of film that can be stored on a mandrel, in the measure where this angle, for a given oscillation determines the diameter external film as a function of the external diameter of the mandrel.
  • One more movie sticking taking place less easily requires a smaller angle ⁇ .
  • the tension in selvedge 21 is substantially equal to or less than that present in the central part of the movie.
  • the tension in the selvedge is for example between 0 and 1 N / cm, preferably between 0.1 and 0.8 N / cm, preferably between 0.2 and 0.7 N / cm, for example equal to 0.4 or 0.7 N / cm.
  • the edge 21 of the film 36 of the reel 38 according to the present invention is much less fragile than the edge 7 of the film 2 of the reel 1 of known type.
  • the radial superposition of the layers at the edge 21 does not hinder the unfolding of the film by causing the overlapping of the layers.
  • the mandrel 17 has a length greater than the width of the film width so that its projecting end of the film absorbs shock in the event of a vertical fall of the coil.
  • the absence or reduction of local excess thickness allows reduce the cost price by reducing the volume by one packaging containing a plurality of reels according to the present invention.
  • the film slides or rolls, without problem, on the film forming the next lower layer even during helical wrapping with significant amplitude displacement of the film reel 38 parallel to its axis 5 during successive turns of the propeller formed by the movie 36.
  • the machine 30 includes means 31 for receiving a coil 32 of stretch film, a pair of rollers 33, 34 of stretch film, a roll 35 ensuring the partial release of the tension in the film 36, means 37 for receiving a reel 38 of stretched and released film, rolls of reference 40, 41, 57 and 42 and at least one motor 43.
  • the roller 35 drives the receiving coil 38.
  • Transmission means movement 44 comprising chains, toothed belts, pinions and / or a gearbox allow the drive of the rollers 33, 34 and 35 by the motor 43.
  • the transmission means 44 have a chain or a belt 61 driven by the axis of the motor 43 and driving the axes of the rollers 34 and 42.
  • a second belt or chain 63 connects the axis of the roller 42 to the axis of the roller 35.
  • Means symbolized by the arrow 45 ensures the application of the roll 35 on the reel 38 of the stretched film be a coward.
  • the roller 35 departs from the axis of the coil 38 according to the arrow 46 as the diameter of the coil 38 increases as a result film winding on the reel.
  • the rollers 33, 34 and / or 35 are grooved, knurled and / or are provided with a surface having a good adhesion to the film.
  • cleaning between the rollers 34 and 35 a film path having a length greater than 0.5 m, for example equal to 0.8 m, to allow elastic return transverse film 36 before winding, so as to release tensions transverse in the film generated by the longitudinal stretching tension.
  • 0.5 m for example equal to 0.8 m
  • the machine 30 of FIG. 6 comprises means 23 ensuring the displacement 25, advantageously periodic, of the coil 32 of the film 36 to be stretched and / or means 27 ensuring the displacement 29 of the reel 38 of the stretched film.
  • the displacement of the coil 32 and / or 38 ensures the preferably periodic axial displacement on the reel 38 of the selvedges of the film 36. It can for example be a tilting movement of the axis of the coil 32 or of the axis 5 of the coil 38. Advantageously, it is a rectilinear translational movement of the axes of these coils.
  • a means 23 and / or 27 may include eccentrics, link type mechanisms, crank or advantageously, as illustrated, an elliptical roller whose axes 51 and 52 of rotation 53 and 54 are perpendicular to the axes of coils 32 and 38, which decreases the time during which the coil 32 and / or 38 is at the extreme positions corresponding to the application on the roller 23 and / or 27 from the point of contact of the axes of the coils 32 and 38 at the level of the major axis and minor axis of the ellipse.
  • FIG. 9 one can see an example of embodiment of the drive means relating to the supply coil 32 relative to the receiving coil 38.
  • These drive means in Figure 9 comprise an advantageously electric motor 73, a reduction gear 74 provided an output axis 75 driving an elliptical, ovoid, eccentric or roller 23 similar.
  • the roller 23 is interchangeable with rollers of different size and / or shape, so that the amplitude can be adjusted and / or the frequency of the oscillations.
  • the lower end of axis 77 of rotation of the coil 32 advantageously equipped with a roller 76, rolls on the roller 23.
  • a guide ring 78 fixed on a support 79 provides guidance in translation 25 of the axis 77 and as a result of the coil 32.
  • the machine according to the present invention comprises advantageously means for synchronizing the rollers 23 and 27 with the means for driving the film 36 and / or the reels 38 and 32.
  • the rollers 23 and 27 can be oval or circular eccentric, i.e. with an axis of rotation 51, respectively 52, does not not passing through their center.
  • the amplitude of the oscillation is for example equal to 12 mm for a width having a width of 0.5 m with a corresponding frequency several turns of the coil 38, for example 5 or 6 for a speed of film progress of 300 meters per minute.
  • the frequency of the oscillations of the coils 32 and / or 38 which may be between 3 and 20, preferably between 4 and 15 preferably, the unwinding speed being able to be between 50 and 1000 m / min, preferably between 300 and 500 m / min
  • the amplitude of the displacement can be between 5 and 20 mm, from preferably between 10 and 12 mm.
  • the axis 5 of the coil 38 is not not necessarily vertical.
  • the inclination of a coil of known type induces a risk of tearing the film.
  • the film 36 according to the invention rolls in such a case on the conical or frustoconical part of the selvedges 21 of the layers superimposed and wraps around an axis 82 parallel to the edge 21 of the film unrolled (see Figure 11).
  • the extra thickness thus created at the edge increases the tear resistance of the film.
  • the film 36 according to the invention has on its edge 21 a reduced tension, which further reduces the risk of tear.
  • the present invention is particularly applicable to film 36 having undergone stretching at a tension between 10 and 20 N / mm 2 of initial width section, winding and relaxation on a mandrel under mechanical tension between 10 and 90% of the stretching tension.
  • the invention also applies to the winding of films under stretching tension as well as to the winding under almost zero tension of stretched films.
  • machine according to the present invention can be directly fed by an extruder and not by a supply coil 32.
  • the present invention applies in particular to overpackaging using overwrapping machines.
  • the present invention mainly applies to overwrapping by manual unwinding.

Landscapes

  • Winding Of Webs (AREA)
  • Replacement Of Web Rolls (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Basic Packing Technique (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (18)

  1. Maschine zum Wickeln einer vorgestreckten Folie von einer Zuführspule (32) zu einer Aufnahmespule (38) für vorgestreckte Folien, umfassend Mittel für den Drehantrieb der Aufnahmespule (38) für vorgestreckte Folien und/oder der Zuführspule (32) von Folien und Mittel, um die Position der Kanten der Folie (36) entlang der Achse (5) der Aufnahmespule (38) periodisch zu verändern, dadurch gekennzeichnet, dass die Mittel zur periodischen Veränderung der Position der Kanten der Folie Mittel umfassen, um zumindest die Zuführspule (32) in Bezug auf die Aufnahmespule (38) zu verschieben, so dass die Kante (21) der aufgespulten Folie (36) ein kegelstumpfförmiges oder im Wesentlichen konisches Profil aufweist.
  2. Maschine nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel zum Verschieben (23) der Zuführspule (32) in Bezug auf die Aufnahmespule (38) eine relative Verschiebeamplitude gewährleisten, die auf der Aufnahmespule die Ausbildung eines kegelstumpfförmigen oder im Wesentlichen konischen Profils der Kante (21) der Folie ermöglicht, die mit einer Achse (5) der Aufnahmespule einen Winkel α zwischen 1° und 80° bildet.
  3. Maschine nach Anspruch 2, dadurch gekennzeichnet, dass die Mittel zum Verschieben (23) der Zuführspule (32) in Bezug auf die Aufnahmespule (38) eine relative Verschiebeamplitude gewährleisten, die auf der Aufnahmespule die Ausbildung eines kegelstumpfförmigen oder im Wesentlichen konischen Profils der Kante (21) der Folie ermöglicht, die mit einer Achse (5) der Aufnahmespule einen Winkel α zwischen 3° und 45° bildet.
  4. Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel zum Verschieben (23) der Zuführspule (32) in Bezug auf die Aufnahmespule (38) Mittel (23) für den oszillierenden Wechselantrieb der Zuführspule (32) parallel zu ihrer Achse (77) umfassen.
  5. Maschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Mittel zum Verschieben der Zuführspule in Bezug auf die Aufnahmespule Mittel zum Kippen der Achse (77) der Zuführspule umfassen.
  6. Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie ferner Mittel (27) umfasst, um die Aufnahmespule (38) in Bezug auf die Zuführspule (32) zu verschieben.
  7. Maschine nach Anspruch 6, dadurch gekennzeichnet, dass die Mittel zum Verschieben (27) der Aufnahmespule (38) in Bezug auf die Zuführspule (32) Mittel für den oszillierenden Wechselantrieb (27) der Aufnahmespule (38) parallel zu ihrer Achse (5) umfassen.
  8. Maschine nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass die Mittel zum Verschieben der Aufnahmespule in Bezug auf die Zuführspule Mittel zum Kippen der Achse (5) der Aufnahmespule umfassen.
  9. Maschine nach Anspruch 4 oder 7, dadurch gekennzeichnet, dass die Mittel (23, 27) für den Wechselantrieb eine elliptische, ovale exzentrische Rolle oder dergleichen umfassen, die entlang einer zur Drehachse (77) der Zuführspule (32) und/oder der Aufnahmespule (38) orthogonalen Achse (51, 52) drehangetrieben wird, wobei die Rolle die Zuführ- und/oder Aufnahmespule parallel zur Drehachse der Spule (32, 38) antreibt.
  10. Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie ferner Streckmittel (33, 34) für eine streckbare Folie (36), Führungsmittel (40, 41, 42, 57, 35) für Folien und Mittel (45, 35, 37) zum Wickeln von gestreckten Folien (36) auf die Aufnahmespule (38) umfasst.
  11. Maschine nach Anspruch 9, dadurch gekennzeichnet, dass sie ferner Mittel (42, 35) umfasst, um die mechanische Spannung in der Folie nach dem Strecken und vor ihrem Wickeln auf die Aufnahmespule (38) teilweise zu entspannen.
  12. Verfahren zum Wickeln von vorgestreckten Folien, umfassend einen Schritt des Streckens einer Folie (36) und einen Schritt des Wickelns der gestreckten Folie auf eine Aufnahmespule (38), wobei sich die Position der Kanten der Folie (36) periodisch entlang der Achse (5) der Aufnahmespule (38) verändert, dadurch gekennzeichnet, dass beim Wickeln zumindest eine Verschiebung der Zuführmittel (32) der Folien (36) in Bezug auf die Aufnahmespule (38) gewährleistet wird, so dass die Kante (21) der aufgewickelten Folie (36) ein kegelstumpfförmiges oder im Wesentlichen konisches Profil auf der Aufnahmespule (38) aufweist.
  13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass die Verschiebung der Zuführmittel (32) der Folien (36) in Bezug auf die Aufnahmespule (38) eine Verschiebung einer Zuführspule (32) parallel zu ihrer Achse (77) ist.
  14. Verfahren nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass beim Spulen die Aufnahmespule (38) ebenfalls parallel zu ihrer Achse (5) verschoben wird.
  15. Verfahren nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass die Verschiebeamplitude zwischen 1% und 4%, vorzugsweise zwischen 2% und 2,4%, der Breite der Maschinenbreite der Folie (36) ausmacht.
  16. Verfahren nach einem der Ansprüche 12 bis 15, dadurch gekennzeichnet, dass das Wickeln mit einer periodischen Veränderung der Position der Kanten der Folie (36) entlang der Achse (5) der Aufnahmespule (38) am Ausgang der Streckmittel (33, 34) der Folie (36) erfolgt.
  17. Verfahren nach einem der Ansprüche 12 bis 16, dadurch gekennzeichnet, dass auf die Aufnahmespule (38) eine Verpackungsfolie aufgewickelt wird, die unter einer Spannung zwischen 10 und 20 N/mm2 Ausgangsquerschnitt der Maschinenbreite gestreckt wurde, und dass das Aufspulen und die Entspannung der Folie auf der Aufnahmespule (38) unter einer mechanischen Spannung zwischen 10 und 90% der Streckspannung erfolgen.
  18. Verfahren nach einem der Ansprüche 12 bis 17, dadurch gekennzeichnet, dass das Verhältnis zwischen der mechanischen Spannung im Mittelteil der Folie (36), die auf die Aufnahmespule (38) aufgewickelt ist, und der Spannung in den Kanten der Folie (36) zwischen 1 und 5, vorzugsweise zwischen 1 und 3 und auf besonders bevorzugte Weise zwischen 1,5 und 2,5 beträgt.
EP98401058A 1997-05-13 1998-04-30 Maschine zum Wickeln von Folie, Verfahren zum Herstellen von Rollen aus vorgedehnter Folie und mit diesem Verfahren hergestellte Rollen Expired - Lifetime EP0878425B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9705857 1997-05-13
FR9705857A FR2763321B1 (fr) 1997-05-13 1997-05-13 Machine pour bobiner du film, procede de fabrication de bobines de films pre-etires et bobines de films pre-etires obtenues par ledit procede

Publications (2)

Publication Number Publication Date
EP0878425A1 EP0878425A1 (de) 1998-11-18
EP0878425B1 true EP0878425B1 (de) 2003-08-20

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EP98401058A Expired - Lifetime EP0878425B1 (de) 1997-05-13 1998-04-30 Maschine zum Wickeln von Folie, Verfahren zum Herstellen von Rollen aus vorgedehnter Folie und mit diesem Verfahren hergestellte Rollen

Country Status (7)

Country Link
US (1) US5967437A (de)
EP (1) EP0878425B1 (de)
AT (1) ATE247594T1 (de)
CA (1) CA2237042C (de)
DE (1) DE69817255T2 (de)
ES (1) ES2205402T3 (de)
FR (1) FR2763321B1 (de)

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US9630799B2 (en) * 2014-07-16 2017-04-25 Anthony Galea Method and apparatus for fabricating stretch film rolls
US11981502B2 (en) 2020-09-09 2024-05-14 Bridgestone Bandag, Llc Systems and methods for HDSS roll packaging
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DE4414003C2 (de) * 1994-04-22 2000-04-13 Kampf Gmbh & Co Maschf Vorrichtung zum Aufwickeln von Warenbahnen, insbesondere Kunststoffolien in einer zwei Drehscheiben aufweisenden Mehrfach-Wendewickelmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014006933A1 (de) 2014-05-10 2015-11-12 Sml Maschinengesellschaft M.B.H. Verfahren und Vorrichtung zur Herstellung einer Anzahl aufgewickelter Folienrollen
EP2952459A1 (de) 2014-05-10 2015-12-09 SML Maschinengesellschaft m.b.H. Verfahren und vorrichtung zur herstellung einer anzahl aufgewickelter folienrollen
DE102014006933B4 (de) * 2014-05-10 2016-02-25 Sml Maschinengesellschaft M.B.H. Verfahren und Vorrichtung zur Herstellung einer Anzahl aufgewickelter Folienrollen
US9701507B2 (en) 2014-05-10 2017-07-11 Sml Maschinengesellschaft M. B. H. Method and device for the production of a number of coiled foil rolls

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ES2205402T3 (es) 2004-05-01
DE69817255T2 (de) 2004-07-01
FR2763321B1 (fr) 1999-07-23
CA2237042C (en) 2002-11-05
CA2237042A1 (en) 1998-11-13
ATE247594T1 (de) 2003-09-15
FR2763321A1 (fr) 1998-11-20
EP0878425A1 (de) 1998-11-18
DE69817255D1 (de) 2003-09-25
US5967437A (en) 1999-10-19

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