EP3802386A1 - Hülse, wickeleinrichtung und verfahren zum mehrfachen, aufeinanderfolgenden aufwickeln von bahnen zu materialwickeln - Google Patents
Hülse, wickeleinrichtung und verfahren zum mehrfachen, aufeinanderfolgenden aufwickeln von bahnen zu materialwickelnInfo
- Publication number
- EP3802386A1 EP3802386A1 EP19726979.8A EP19726979A EP3802386A1 EP 3802386 A1 EP3802386 A1 EP 3802386A1 EP 19726979 A EP19726979 A EP 19726979A EP 3802386 A1 EP3802386 A1 EP 3802386A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- winding
- diameter
- edge
- winding shaft
- 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.)
- Granted
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
- B65H19/00—Changing the web roll
- B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
- B65H19/30—Lifting, transporting, or removing the web roll; Inserting core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
- B65H19/12—Lifting, transporting, or inserting the web roll; Removing empty core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/04—Kinds or types
- B65H75/08—Kinds or types of circular or polygonal cross-section
- B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/24—Constructional details adjustable in configuration, e.g. expansible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/24—Constructional details adjustable in configuration, e.g. expansible
- B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
- B65H75/243—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages actuated by use of a fluid
- B65H75/2437—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages actuated by use of a fluid comprising a fluid-pressure-actuated elastic member, e.g. a diaphragm or a pneumatic tube
-
- 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
-
- 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
- B65H2301/417—Handling or changing web rolls
- B65H2301/418—Changing web roll
- B65H2301/4182—Core or mandrel insertion, e.g. means for loading core or mandrel in winding position
- B65H2301/41828—Core or mandrel insertion, e.g. means for loading core or mandrel in winding position in axial direction
-
- 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
- B65H2301/417—Handling or changing web rolls
- B65H2301/418—Changing web roll
- B65H2301/4185—Core or mandrel discharge or removal, also organisation of core removal
- B65H2301/41854—Core or mandrel discharge or removal, also organisation of core removal by extracting core from wound roll, i.e. in coreless applications only
-
- 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
- B65H2701/50—Storage means for webs, tapes, or filamentary material
- B65H2701/51—Cores or reels characterised by the material
- B65H2701/511—Cores or reels characterised by the material essentially made of sheet material
- B65H2701/5112—Paper or plastic sheet 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
- B65H2701/00—Handled material; Storage means
- B65H2701/50—Storage means for webs, tapes, or filamentary material
- B65H2701/51—Cores or reels characterised by the material
- B65H2701/511—Cores or reels characterised by the material essentially made of sheet material
- B65H2701/5114—Metal sheets
-
- 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
- B65H2701/50—Storage means for webs, tapes, or filamentary material
- B65H2701/51—Cores or reels characterised by the material
- B65H2701/514—Elastic elements
-
- 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
- B65H2701/71—Special purposes; Special handling other than the normal handling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/84—Paper-making machines
Definitions
- the invention relates to a sleeve for multiple, successive winding of webs to material coils and a winding device comprising such a sleeve.
- winding shafts known in the prior art generally have the embodiment shown below.
- three or more shells are arranged on the circumference. These can be brought by inflating an air hose inside the winding shaft core to a larger diameter. In this state, the film is wound up. After completion of the winding process, the air is released and the shells retract by spring force to their original, smaller diameter. In this condition, the inner layers of the roll carry the film wrap and it arises a gap to the winding shaft. Thus, the finished roll can be pulled by the winding shaft.
- clamping elements are heavy and significantly reduce the load-bearing cross-section of the winding shaft. This means straight for 2 "applications (2" is the outer diameter of the cores) low working widths and / or low line speeds.
- the second disadvantage is gaps that result in an expanded winding shaft between the shells. There presses foil while winding. This complicates the impanding of the shells after winding, which reduces the process reliability of the peeling. In addition, the impressions are visible through the gaps inside the roll, which is a negative quality mark.
- the object of the present invention is therefore to propose an arrangement and a winding device as well as a method in which the aforementioned disadvantages are eliminated or at least reduced.
- the standard winding shaft comprises adjusting elements, which are displaceable relative to the winding shaft, wherein a component of the displacement points radially outward.
- the adjusting elements are drivable, preferably within the Winding shaft, a pressure chamber and / or a flexible hose are provided.
- a pressure chamber may be filled with a fluid which is pressurized to displace the control elements.
- a flexible hose can also be pumped up in a simple manner, ie be charged with a larger volume of fluid.
- This shaft By pushing and attaching a very thin-walled spiral sleeve, this shaft becomes a coreless winding shaft.
- This sleeve consists of a one-piece, cylindrical shell, which comprises two edge regions which overlap to form an overlapping region. At rest, this sleeve preferably has an inner diameter that is smaller than, equal to or only minimally larger (max 5 mm) than the outer diameter of the winding shaft. This gives a nearly circular surface, which can be brought by clamping and relaxing in different diameters. In this case, the sleeve has a first diameter in the relaxed state.
- the sleeve is transferred to a tensioned state, wherein the overlap region is reduced.
- the sleeve has a second diameter, wherein this second diameter deviates from the first diameter.
- the second diameter is greater than the first diameter.
- the material is elastic, d. h., It returns after relaxing in its original position and resumes its initial geometry.
- a sleeve according to the invention may have an inner diameter which is smaller than the outer diameter of the winding shaft.
- the inner diameter of the sleeve can be up to 10%, preferably up to 5%, smaller than the outer diameter of the winding shaft.
- inner diameter of the sleeve the diameter is meant, which assumes the sleeve when it is not pushed onto the winding shaft. With such an inner diameter ensure that the sleeve also returns from the tensioned state to the relaxed state.
- Travel limiters and / or force limiters can act on the adjusting elements within the winding shaft, wherein the travel limiters and / or force limiters are in particular adjustable. In this way, the path of the adjusting elements in the radial direction can be limited to the outside, so that the second diameter assumes a desired value.
- Wegbebankr or force limiters are not necessary because a well-known from the prior art sleeve already limited the way or the force by their strength.
- a significant advantage of the invention is that it can be wound with a winding shaft both with and without conventional cores. Only the sleeve according to the invention must be postponed. That reduces
- Another very important advantage of the invention is the absence of gaps in the stressed state. This results in a substantially round interior of the material wrap. This is a quality feature for the sale of material wraps.
- the edges of the sleeve extend parallel to the main axis of inertia of the sleeve.
- the edges are parallel to the axis of rotation of the winding shaft when the sleeve is pushed onto this.
- the sleeve is thereby applied to the winding shaft, that the resting in the region of the overlap edge seen in the direction of rotation of the winding shaft is located at the rear end of the sleeve.
- the front end of the web can be placed when it is rewound.
- the shock that occurs after each revolution of the winding shaft, when the material web meets the web start be reduced, so that a more uniform winding is formed.
- the edges extend at an angle to the main axis of inertia of the sleeve, in particular spirally. With such an embodiment, an imbalance of the sleeve can be reduced or even avoided.
- the material of the sleeve comprises carbon fiber reinforced plastic (CFRP).
- CFRP carbon fiber reinforced plastic
- the sleeve can be made entirely of this material.
- a sleeve that includes CFRP can be very thin-walled. This imbalance of the stocked with the sleeve winding shaft can be avoided, the winding shaft thus runs around, which is particularly advantageous at high winding speeds.
- the high strength of this material also causes the outer circumference to maintain a very good circular shape as the diameter increases, which has a positive effect on the quality of the roll.
- the material of the sleeve comprises at least partially steel, in particular spring steel. With this material very inexpensive sleeves can be produced.
- the above object is also achieved by a winding device and a sleeve for successively winding material web sections to material wraps, the material winder having direct contact with the sleeve, wherein the material wraps are displaceable relative to the sleeve, wherein the sleeve during the displacement of the material roll relative to the winding core remains in a fixed position, wherein the sleeve is configured according to one or more of the above-described embodiments of the invention.
- the sleeve is transferred to a tensioned state having a second diameter, wherein the second diameter is greater than the first diameter
- the material roll is withdrawn from the sleeve
- the method is characterized in that the sleeve comprises a one-piece workpiece circumscribing a cylinder, which comprises two edge regions, each having an edge, wherein the edge regions overlap, wherein during the transfer of the sleeve from the relaxed state to the tensioned state of the distance Margins is reduced.
- the same advantages are achieved as with a winding device according to the invention and / or a sleeve according to the invention.
- the sleeve can remain in this process on the winding core or be removed with the finished material wrap.
- FIG. 2 As Figure 1, but with outwardly shifted actuators Fig. 3 cross-section of a winding shaft with a sleeve according to the invention in the relaxed state
- FIG. 6 Perspective view of another embodiment of a sleeve according to the invention
- Fig. 7 A provided with a fixing element embodiment of a winding shaft assembly
- FIG. 9 A winding device according to the invention
- FIG. 1 shows a section through a so-called coreless winding shaft 1 according to the prior art.
- the actual winding shaft which includes a supporting tube 10.
- the supporting tube 10 is surrounded by a plurality of shell parts 11, which in its entirety preferably surround the tube 10 concentrically and can rest in the relaxed state on its outer circumference.
- adjusting elements 12 of which each shell part 11 is associated with at least one, the shell parts 11 can be moved in the radial direction of the supporting tube 10.
- at least one force supply device is provided, which in the present FIG. 1 is designed as an expandable cavity, for example as a hose 13.
- FIG. 3 shows a first embodiment of a sleeve 50 according to the invention in a sectional view.
- This sleeve can be pushed onto a winding shaft, which likewise comprises a supporting tube 10.
- adjusting elements 12 and an expandable cavity 13 are provided, whose structure and function are analogous to the prior art.
- the sleeve extends circumferentially around the supporting tube 10, with the sleeve extending through an angle greater than 360 °.
- the sleeve 50 overlaps itself in an overlap region, which is represented by the double arrow 53.
- the sleeve 50 has a first diameter D1
- D1 it being noted that due to the overlap, the sleeve does not have an ideal circular cross-section.
- FIG. 4 now shows the arrangement of FIG. 3, but with adjusting elements 12 displaced outwardly in the radial direction of the supporting tube 10.
- Moving the adjusting elements again preferably proceeds as in the prior art.
- the parts of the sleeve which lie one above the other in the overlapping region, move relative to one another.
- the edges 51 and 52 approach each other. It can also be said that the overlapping area 53 is reduced.
- the sleeve 50 has a diameter D2 which is greater than the diameter D1.
- the winding process can now begin and a material roll can be formed on the sleeve 50. If a material roll is finished wound and this must now be removed from the sleeve, the sleeve 50 is again transferred to the relaxed state according to FIG. 3, in FIG which now the diameter D1 of the sleeve 50 is smaller than the inner diameter of the material roll.
- FIG. 5 now shows a perspective view of a supporting tube 10 and the sleeve 50 pushed onto it. It can be seen that the edge 51 extends parallel to the main axis of inertia of the sleeve 51, which runs close to or on the axis of rotation of the winding shaft and thus of the supporting tube 10 ,
- FIG. 6 now shows a further embodiment of a sleeve 50 according to the invention.
- the illustration is likewise in perspective.
- the edge 51 (and thus also the edge 52, not shown) does not run parallel here, but at an angle to the main axis of inertia of the sleeve 50.
- the edge 51 runs in a spiral.
- the circumferential angle of the rim 51 is preferably more than 360 °.
- an overlap area in this embodiment. Also preserved are the properties according to which the edges approach for transferring the sleeve from a relaxed state into a tensioned state, or the overlap area is reduced in size.
- FIG. 7 shows a first embodiment in which a pin 20 arranged on the supporting sleeve is provided, wherein the pin represents the fixing element.
- the sleeve 50 has a complementary hole 60 into which the pin can engage.
- the pin 20 may include a run-on slope 21 or be movably disposed on the supporting tube.
- a on the load-bearing tube slidable and fastened there ring 22 is provided.
- This ring can now carry the fixing element.
- Such a ring may also be part of a fixing element.
- the fixing element may be designed as a screw 23, with which the sleeve is pressed against the supporting tube.
- a sleeve according to the invention and a winding shaft explained in the context of this description can together form a winding shaft arrangement according to the invention.
- FIG. 9 now shows a winding device 100 according to the invention, which comprises a winding shaft arrangement 101 according to the invention.
- a material web 102 which is for example a plastic web
- the material web 102 can be pressed against the winding shaft arrangement with the contact roller.
- the winding device is constructed and operated in such a way that the winding shaft arrangement rotates in the direction R.
- a new beginning 105 of a web 102 is supplied to form a new roll, it is advantageous if the beginning 105 seen in the direction R is placed just behind the edge 51 on the sleeve.
- short is meant an angle range from 0 to a maximum of 30 degrees. In this way, the step 51 resulting from the edge 51, but also the step resulting from the beginning 105, is reduced.
Landscapes
- Winding Of Webs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018208221 | 2018-05-24 | ||
| PCT/EP2019/063511 WO2019224370A1 (de) | 2018-05-24 | 2019-05-24 | Hülse, wickeleinrichtung und verfahren zum mehrfachen, aufeinanderfolgenden aufwickeln von bahnen zu materialwickeln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3802386A1 true EP3802386A1 (de) | 2021-04-14 |
| EP3802386B1 EP3802386B1 (de) | 2025-07-30 |
Family
ID=66668925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19726979.8A Active EP3802386B1 (de) | 2018-05-24 | 2019-05-24 | Hülse, wickeleinrichtung und verfahren zum mehrfachen, aufeinanderfolgenden aufwickeln von bahnen zu materialwickeln |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US12091271B2 (de) |
| EP (1) | EP3802386B1 (de) |
| WO (1) | WO2019224370A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MY198615A (en) * | 2019-10-03 | 2023-09-11 | Gt Max Plastic Ind M Sdn Bhd | An apparatus for coreless film roll |
| FI4049954T3 (fi) * | 2020-12-28 | 2024-01-24 | Corelex Shin Ei Co Ltd | Hylsyttömän paperirullan valmistusmenetelmä |
| WO2024083848A1 (de) | 2022-10-18 | 2024-04-25 | Windmöller & Hölscher Kg | Hülse zum aufwickeln eines wickelguts und wickelwelle zur aufnahme einer hülse |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3220664A (en) * | 1962-08-06 | 1965-11-30 | Minnesota Mining & Mfg | Attaching means for reels |
| US5344091A (en) * | 1993-08-20 | 1994-09-06 | Elsner Engineering Works, Inc. | Apparatus for winding stiffened coreless rolls and method |
| JP2003192236A (ja) * | 2001-12-26 | 2003-07-09 | Daika Kogyo Kk | ロール製品とその巻き取り方法 |
| WO2007061897A2 (en) * | 2005-11-17 | 2007-05-31 | Eastern Ribbon & Roll Corp. | Coreless winding apparatus |
| US20100320302A1 (en) * | 2009-06-23 | 2010-12-23 | Catbridge Machinery, Llc | In-Line Formed Core Supporting a Wound Web |
| EP2266904A2 (de) * | 2009-06-24 | 2010-12-29 | Elsner Engineering Works Inc | Folienrolle mit gewickeltem Versteifungskern, Vorrichtung zum Wickeln der Rolle und Verfahren |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2656990A (en) | 1950-11-18 | 1953-10-27 | Int Harvester Co | Expansible core for glass filament windings |
| FR1103912A (fr) | 1953-07-09 | 1955-11-08 | Kenyon & Sons Ltd William | Fixation du retordage de fibres textiles |
| FR1145624A (fr) | 1956-03-12 | 1957-10-28 | Dispositif de support contractable pour enroulements textiles | |
| FR1166667A (fr) | 1957-02-05 | 1958-11-13 | Tube pour le travail des fils de matières thermoplastiques et procédé pour l'utilisation de ce tube | |
| US4832276A (en) * | 1988-04-18 | 1989-05-23 | Usx Corporation | Polyurethane sleeve for tension reels |
| US4802637A (en) * | 1988-04-22 | 1989-02-07 | Williams Logan D | Apparatus for being positioned on an expandable mandrel |
| US6036139A (en) * | 1996-10-22 | 2000-03-14 | The Procter & Gamble Company | Differential ply core for core wound paper products |
| US20040052987A1 (en) * | 2002-09-12 | 2004-03-18 | Shetty Shankara R. | Paper based retortable can and method for making same |
| US7946523B2 (en) * | 2006-12-12 | 2011-05-24 | Lincoln Global, Inc. | Self-adjusting payoff core |
| WO2011103696A1 (de) | 2010-02-23 | 2011-09-01 | Swiss Winding Inventing Ag | Wickelhülse für eine endlose bahn einer kunststofffolie |
| ITMI20110467A1 (it) * | 2011-03-24 | 2012-09-25 | No El Srl | Mandrino per l'avvolgimento di bobine senz'anima di un film plastico |
| MX2015010864A (es) * | 2013-02-21 | 2015-12-03 | Procter & Gamble | Centros fibrosos. |
| US9756991B2 (en) * | 2013-02-21 | 2017-09-12 | The Procter & Gamble Company | Fibrous cores |
-
2019
- 2019-05-24 EP EP19726979.8A patent/EP3802386B1/de active Active
- 2019-05-24 US US17/057,597 patent/US12091271B2/en active Active
- 2019-05-24 WO PCT/EP2019/063511 patent/WO2019224370A1/de not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3220664A (en) * | 1962-08-06 | 1965-11-30 | Minnesota Mining & Mfg | Attaching means for reels |
| US5344091A (en) * | 1993-08-20 | 1994-09-06 | Elsner Engineering Works, Inc. | Apparatus for winding stiffened coreless rolls and method |
| JP2003192236A (ja) * | 2001-12-26 | 2003-07-09 | Daika Kogyo Kk | ロール製品とその巻き取り方法 |
| WO2007061897A2 (en) * | 2005-11-17 | 2007-05-31 | Eastern Ribbon & Roll Corp. | Coreless winding apparatus |
| US20100320302A1 (en) * | 2009-06-23 | 2010-12-23 | Catbridge Machinery, Llc | In-Line Formed Core Supporting a Wound Web |
| EP2266904A2 (de) * | 2009-06-24 | 2010-12-29 | Elsner Engineering Works Inc | Folienrolle mit gewickeltem Versteifungskern, Vorrichtung zum Wickeln der Rolle und Verfahren |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2019224370A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US12091271B2 (en) | 2024-09-17 |
| US20210380362A1 (en) | 2021-12-09 |
| WO2019224370A1 (de) | 2019-11-28 |
| EP3802386B1 (de) | 2025-07-30 |
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