Winding carrier, method for winding a film web, and system for producing a film web and winding station

Abstract

Winding carrier for a film web, especially winding shaft or winding sleeve, with an adhesive surface for holding when winding the film web to be applied there, characterized in that the winding carrier has an adhesive release mechanism arranged inside the winding carrier, acting on the adhesive surface.

Description

[0001] The invention relates to a winding carrier, a method for winding a film web, a system for producing a film web, and a winding station.

[0002] Methods for producing film webs with a subsequent winding station are well known in the art. Common manufacturing methods can be found, for example, in blown film lines or cast film lines. The invention can be applied to all types of production, although in this patent application the description of exemplary embodiments relates primarily to blown film lines.

[0003] In a blown film line, plastic granules are melted and compacted (homogenized) by an extruder and fed to a blowing head. Within the blowing head, a pre-distribution system leads to an arrangement of several helixes, which guide the molten material flowing through them to an annular die. A molten tube emerges from the annular die. This tube is drawn off – usually upwards against gravity – and, while still molten, stretched laterally by inflating it with air, while take-off rollers cause longitudinal stretching. Thus, the film tube is stretched biaxially in its molten state.

[0004] Beyond a frost line, beyond which the foil tube is no longer in a molten state, it is flattened and deflected, often with a reversing machine, and ultimately fed either as a flattened foil tube or in cut form as a double layer, but in any case as a foil web to a winding station.

[0005] The winding station transfers the incoming film web onto discrete windings to facilitate further transport of the film web.

[0006] Particularly at the beginning of a new winding, it must be ensured that the force required for winding is transferred from a winding carrier arranged along the winding axis to the film web. When winding a new web after a cut or a production break, a force component tangential to the winding axis must be exerted on the surface of the winding carrier in the direction of rotation of the winding carrier to wind the incoming film web with sufficient tension, which is generally precisely or at least substantially defined beforehand. Simultaneously, a force acting radially towards the winding axis must also be applied to ensure winding around the winding axis or the outer surface of the winding carrier, thus preventing the beginning of the incoming film web from detaching.

[0007] Typically, winding sleeves are used for winding, which are clamped concentrically to the winding axis onto a winding shaft.

[0008] To ensure that the newly supplied film web adheres during winding, the winding tubes are usually coated with adhesive, or winding tubes already coated with adhesive by the manufacturer are used.

[0009] After winding, the finished roll is removed by releasing the tension on the winding shaft's tensioning device. The winding shaft can then be pulled out of the winding sleeve, or the winding sleeve can be pulled off the winding shaft.

[0010] The adhesive surface on the winding sleeve, i.e. the surface coated with adhesive which causes the incoming film web to adhere, is located on the outer surface, which is generally exactly cylindrical, of the winding carrier.

[0011] The present invention is based on the objective of providing an improvement or an alternative to the prior art.

[0012] According to a first aspect of the present invention, the stated problem is solved by a winding carrier for a film web, in particular a winding shaft or a winding sleeve, with an adhesive surface for winding the film web to be applied therein, wherein the winding carrier is characterized in that it has an adhesive release arranged inside the winding carrier, acting on the adhesive surface.

[0013] For conceptual purposes, it should first be explained that the "interior" of the winding carrier is located within the cylindrical, or at least substantially cylindrical, space formed by the outer environment of the winding carrier, especially an imaginary hollow cylinder that lies coaxially with the winding carrier, has the axial length of the winding carrier, and has a wall thickness of zero. The interior space of this imaginary cylinder constitutes the interior; in a preferred subset, the interior is the actual free space within the wall thickness of the material from which the winding carrier is formed at its load-bearing outer surface.

[0014] The "adhesion releaser" can be any device that can controllably or regulateably reduce or completely eliminate the adhesive effect between the adhesive surface and a film subsequently wound onto it, thus adhering at least partially. The adhesion releaser can, for example, operate mechanically, electrically, and / or chemically.

[0015] It should generally be noted that, within the context of the present patent application, indefinite articles and numerical specifications such as "one...", "two...", etc., are regularly to be understood as minimum specifications, i.e., as "at least one...", "at least two...", etc., unless it is clear from the respective context or wording that only "exactly one...", "exactly two..." is meant.

[0016] Regarding the distinction between "regulating" and "controlling," it should be noted that the wording here does not necessarily have to be strictly adhered to. Rather, whenever "controlling" is mentioned, "regulating" is to be understood as a more complex embodiment and thus as a subset, whereas whenever "regulating" is mentioned, "controlling" is also to be disclosed as a simplified embodiment. With regard to the disclosure content of the present patent application, an exchange or addition of the other word is expressly permitted in each case.

[0017] The first aspect of the invention presented here involves using one or more adhesive surfaces on the winding carrier to influence the adhesive effect and, in particular, to selectively reduce or eliminate the adhesive effect in order to peel the existing winding from the winding carrier, for example, a winding shaft or a winding sleeve, or conversely, to pull the winding carrier out of the film winding. Even if, in a practical implementation, the force of gravity acting on the winding carrier will generally necessitate mechanical or machine-assisted peeling, the mere possibility of peeling represents a significant improvement over previous technology.This is because the winding carrier can be used again immediately on the system for producing and winding the film web, whereas previously it had to be transported with the film roll for further processing.

[0018] With suitable design, the adhesive surface can also be recycled and / or it can be designed to be reusable – even if this is more complex in individual cases than applying a simple adhesive layer.

[0019] Alternatively or cumulatively, with suitable design, it is possible to dispense with a winding core and instead generate the film roll directly on a winding shaft. For the actual product of a film web production system—namely, the unwound film web—it is irrelevant whether the winding is done on a winding shaft, a winding shaft with a winding core, or some other method.

[0020] In a constructively clever embodiment, the adhesive surface is formed on an outer side of a film, with the film being attached to the winding carrier.

[0021] The term "film" generally refers to a flexible membrane.

[0022] Even when using the invention presented here, the winding carrier must fulfill the basic functions of providing an adhesive surface, either on a winding shaft or on a reusable winding sleeve, for example. This surface must preferably be removable from the film web without leaving any residue, but simultaneously transmit the forces required for winding tangentially and radially to the winding axis. Such adhesion to the surface can be achieved by means of a structuring whose dimensions are in the micrometer or nanometer range in at least one dimension. Such a structuring can, for example, increase the surface area so that the van der Waals forces generated there result in sufficient adhesion of the film web. Films with a corresponding surface effect can, for example, be obtained from Gottlieb-Binder GmbH & Co.KG D-71088 Holzgerlingen, from their product line under the brand name Gecko® Nanoplast®, uses a silicone film approximately 0.34 mm thick with microscopic elements on one side. These elements adhere to all smooth and flat surfaces. Thanks to van der Waals forces, an electrostatic interaction occurs, creating an intermolecular attraction similar to that of a magnet, as described there.

[0023] If the film proposed here is arranged on the outside of the winding carrier, with the adhesive surface on an outer side, i.e., facing away from the winding carrier, then the microstructuring of the film can ensure sufficient adhesion of the incoming film web.

[0024] A different surface design can be used on the inside of the film, for example a sliding design and / or a firm connection with the winding carrier.

[0025] To remove the film roll from the winding carrier, either the film roll with the adhesive film can be removed from the winding carrier, and the adhesive film can then be removed from the film roll inwards if desired; or the adhesive film can first be peeled inwards from the film roll while still attached to the winding carrier, making it particularly easy to remove the film roll from the winding carrier.

[0026] To eliminate or at least reduce the adhesive effect between the adhesive surface and the created film web roll, the adhesion releaser can have a drive and a mechanical working means, wherein the drive is configured to act on the working means, and wherein the working means is configured to act on the adhesive surface.

[0027] In such a design, the drive simply needs to be activated during or after winding, for example by applying an electrical voltage, and the drive acts on the mechanical element. The mechanical element, in turn, moves the adhesive surface relative to its position during winding. In particular, a radial or at least substantially radial peeling of the adhesive surface from the inside of the film web roll towards the interior is envisaged, for example, a peeling action. With an adhesive effect, it is generally considerably easier to detach the adhesive surface from the inside of the film web roll if the detaching force acts perpendicular or at least substantially perpendicular to the surface of the inner cylindrical surface of the film web roll; a shearing motion, on the other hand, would require considerably more force.

[0028] A mechanical agent can, for example, be mounted in a rotary manner and be designed to cause a movement of the adhesive surface towards the interior of the winding carrier by rotating a winding axis.

[0029] In such a design, the mechanical agent would not exert a mechanical attack on the adhesive surface simultaneously around the entire circumference of the winding carrier or at least across the circumference of the adhesive surface. Rather, the mechanical agent would act on the adhesive surface along one or more lines of action, for example, with a release edge that precedes the rotation. However, due to the rotation of the mechanical agent, the point or line-shaped force would be exerted over a surface area, primarily around the entire inner surface of the film web winding, or at least across substantially the entire extent of the adhesive surface.

[0030] A particularly clever design provides that the mechanical agent has a sleeve.

[0031] A sleeve can be mounted around the interior, especially coaxially with the entire winding carrier and thus also with the film web being produced. Due to this coaxial mounting, the sleeve can rotate and thereby at least covers the adhesive surface, preferably the entire surface, of the winding carrier. Consequently, a sleeve can cause the adhesive surface to move away from the film web across its entire surface.

[0032] If the sleeve has a slot and an internal adhesive film holder, the adhesive film can be a strip rather than a tube. One edge of the adhesive film is then fixed inside the winding carrier, for example, clamped in place, while the opposite edge of the preferred rectangular film section can remain free. From the fixed edge, the adhesive film can extend through the slot in the sleeve to the outside and from there wrap around the sleeve.If the adhesive film is designed to be adhesive only on its outer surface, then the sleeve can be rotated so that, during the rotation of the sleeve, one side edge of the slot in the sleeve pulls the film at least substantially radially inwards from the inner surface of the adhesive film roll, while the other edge of the same slot, which precedes the rotation of the sleeve, moves away from under the adhesive film being pulled down, thus making room to draw the adhesive film radially inwards into the sleeve, so that, in a sense, the sleeve with its slot moves once rotationally and thereby draws the adhesive film, which is firmly clamped on one side, from the outside of the sleeve into the inside of the sleeve.

[0033] In such a design, means are preferably provided for securely attracting the adhesive film to the inside, so that accidental adhesion of the outer surface of the film, which may still be adhesive, to the inside of the rotating sleeve is prevented, for example a vacuum device can be arranged on a central roller or rod, wherein the rotating sleeve moves around this central roller or rod and the vacuum from the inside of the roller or rod acts outwards through a porous or perforated design into the inside of the rotating sleeve, drawing the film inwards.

[0034] Another, purely passive design would involve, for example, small rollers or wheels on the inside of the rotating sleeve. These wheels or rollers would run over the adhesive area of ​​the adhesive film drawn into the sleeve, but the adhesive film would remain undamaged and preferably still adhesive in the strips not traversed by the rollers or wheels due to the sleeve's counter-rotation. An alternative or cumulative design of the winding carrier could include a radial reducer in the active ingredient.

[0035] In such a design, it is important to ensure that the adhesive surface is not attached to a softly deformable film, but rather to a component that, as such, provides the mechanical stability necessary for the cylindrical winding of the film web. If this mechanically stable surface is pulled radially inwards into the interior of the winding carrier, the adhesive surface detaches from the inside of the film web roll. This is because the film web roll is inherently stable in its wound state, and with a suitable design, there is no risk of the innermost layer of the film web roll being harmfully pulled radially inwards away from the layers surrounding it.

[0036] One possible design embodiment for a radial reducer of a mechanically stable element used for winding can be achieved if the radial reducer has a fluid element with a pump.

[0037] A “fluid element” is understood to be an element with a sheath that is impervious to flow of fluid, for example a bladder made of rubber or another material that can be deformed without damage and subsequently restored to its shape.

[0038] For example, consider a bubble made of airtight plastic film which can be inflated so firmly by means of the pump that the pneumatic overpressure exerts sufficient force radially outwards to imprint a cylindrical shape on the inside of the wound-up film web.

[0039] In order to allow the adhesion release mechanism to function, the overpressure can either be reduced or, preferably, a vacuum is applied in such a design, so that the surface of the previously hydraulically or pneumatically tensioned body is pulled inwards and thus detaches itself from the inside of the film web winding.

[0040] A centering mechanism for such a bellows is proposed to ensure that the bellows does not detach from the inside of the film web winding at various points, but, for example, remain stuck at another point.

[0041] A combination of different force sources can also be advantageous, for example, a bellows with internal springs that pull the bellows back towards the winding axis. This ensures that when overpressure is applied, the cylindrical winding surface is prepared for the film web to be wound. However, as soon as the overpressure is released, the contact surface automatically retracts radially inwards. Such a design allows for the reliable removal of the film web from the winding carrier even if, for example, a leak develops in the bellows.

[0042] It is perfectly sufficient if the winding carrier has a segment in its surface and the radial reducer has a mechanical means for the segment.

[0043] Thus, one or more segments may be present in the cylindrical surface provided for winding the film web, which can be pulled radially inwards and are adhesive, while other segments of the cylindrical surface of the winding carrier, ready for winding, are fixed but not adhesive to the film web to be wound.

[0044] A "segment" is understood not only as a circular arc segment in the mathematical sense, but as any kind of partial area of ​​the entire surface of the winding carrier covered by the film web to be wound during winding.

[0045] Stripes or dots are the most likely options.

[0046] Structurally, the winding carrier can have a sleeve made of metal or plastic, which is provided with various perforations, so that a mechanism coming from the inside can bring the adhesive surface through the perforations to the outside into the plane of the cylindrical surface of the winding carrier and from there remove it again to activate the adhesion release.

[0047] To remove the film web from the winding carrier, an ejection device is preferably provided inside the winding carrier. For example, a driven wheel can be pressed against the inside of the film web through a recess in the cylindrical surface of the winding carrier and driven, so that the winding carrier moves axially out of the film web.

[0048] If the risk of damaging the wound film web on the inside is too great, an axially acting force transmitter device can be provided, which, for example, engages at the axial end of the film web winding and over which the winding shaft or the differently designed winding carrier can be pulled or pushed axially out.

[0049] According to a second aspect of the present invention, the stated problem is solved by a method for winding a film web onto a winding support, especially onto a winding shaft or a winding sleeve, comprising the steps (a) placing the film web against an adhesive surface to hold the film web during winding; (b) winding the film web onto the winding support and inserting an adhesive release device arranged inside the winding support, acting on the adhesive surface to release the adhesive effect between the adhesive surface and the film web; and (c) removing the winding support from the wound film web.

[0050] It has already been explained that removing the winding carrier from the wound film web does not necessarily have to be done directly at the production plant, but is preferably done there.

[0051] According to a third aspect of the present invention, the stated problem is solved by a system for producing a film web, comprising an extruder, a continuous film-producing round or slot die, a cooling system for the produced film web, a deflection system, and a winding station, wherein the winding station is configured for winding the film web, and wherein the winding station is configured to receive a winding carrier as described above, to wind a film web onto it, and to control an adhesion release mechanism arranged inside the winding carrier that acts on the adhesive surface, so that the film web roll can be removed from the winding carrier directly at the system.

[0052] According to a fourth aspect of the present invention, the stated problem is solved by a suitably equipped winding station. Such a winding station can also be retrofitted to an existing system, for example, a blown film line.

[0053] In general, it can be said that in order to remove the finished roll, i.e., the finished roll of film, the adhesion between the winding carrier and the innermost layer of the wound web material must be prevented to such an extent that the winding carrier can be pulled out of the finished roll.

[0054] The reduction of adhesion is achieved, for example, by covering the adhesive surface of the winding shaft and / or the winding sleeve with a non-adhesive film or sleeve before removing the winding carrier.

[0055] Overall, this solution makes it possible to wind web material without the need for transportable cores and / or additional adhesive. With previously known winding cores, the costs for cores and, if applicable, adhesive are incurred solely because they are required as auxiliary materials for transport and further processing, but do not contribute to the value of the actual product.

[0056] The invention is explained in more detail below with reference to five exemplary embodiments and the accompanying drawings. These drawings show... Fig. 1.1 and 1.2 a first embodiment of a winding shaft with a rotatably arranged sleeve and an adhesive film attached to one side. Fig. 2.1 and 2.2 a second embodiment of a winding shaft, with a rollable adhesive film arranged on one side, Fig. 3.1 and 3.2 a third embodiment of a winding shaft with mechanically retractable and extendable segment strips, Fig. 4.1 and 4.2 a fourth embodiment of a winding shaft with a pneumatically controlled bellows and Fig. 5.1 and 5.2 a fifth embodiment of a winding shaft with rotatably retractable segment strips.

[0057] The winding shaft 1 according to the first embodiment in the Fig. Sections 1.1 and 1.2 essentially consist of an inner body (2) and a rotatably mounted sleeve (3) arranged around it. The sleeve (3) has a slot (4). The slot (4) is formed by a first edge (5) and a second edge (6) of the sleeve (3).

[0058] The inner body (2) – in the embodiment shown here, although other embodiments such as production from solid material are also conceivable – is hollow in its interior (7) and accommodates various bearings and controls (not shown). An adhesive film (9) is arranged on its surface (8) and held in place on one side by a clamp (10).

[0059] The adhesive film (9) extends from the clamp (10) through the slot (4) to an outer surface (11) of the winding shaft (1), continues clockwise around the sleeve (3) around the second edge (6), and only ends when it reaches the first edge (5), i.e., after almost a complete wrap around the sleeve (3). The adhesive film (9) is coated with an adhesive layer on the outer surface (11) of the winding shaft (1) (not shown), while on the inner surface, i.e., towards the sleeve (3), it is designed to slide.

[0060] Inside (7) is a drive for the sleeve (3).

[0061] For the sake of completeness, it should be noted that in other embodiments, in the case of a non-hollow inner body, but also in the case of a hollow inner body (2), a mechanism may also be arranged outside the inner body.

[0062] The sleeve (3) is mounted rotatably around a winding axis (12).

[0063] In the operation of the first winding shaft (1), the surface of the adhesive film (9) facing the outside (11) of the first winding shaft (1) serves as an adhesive surface for an approaching film web to be wound (not shown). The first winding shaft (1) can be set into rotation for this purpose, and the approaching edge of the film web is placed against the adhesive film (9), whereupon the winding takes place and a film web roll is formed layer by layer on the first winding shaft (1).

[0064] If the adhesive effect between the adhesive film (9) and the innermost layer of the film web roll is to be reduced, the drive acts on the rotatably mounted sleeve (3) in a clockwise direction. This causes the sleeve (3) to rotate along the inside of the adhesive film (9). As a result, the second edge (6) of the sleeve (3), which rotates against the adhesive surface of the adhesive film (9), pulls the adhesive film (9) away from the inside of the film web roll, at least substantially radially inwards. Simultaneously, due to the leading first edge (5) of the sleeve (3), the slot (4) is always located directly beneath the adhesive film that has just been detached. Because of the non-rotating inner body (2) and the thus stationary clamp (10), the adhesive film (9) is drawn through the slot (4) into the interior of the rotating sleeve (3). In the final state (see Figure 1), the adhesive film (9) is pulled through the slot (4) into the interior of the rotating sleeve (3). Fig. 1.2) The sleeve (3) covers the adhesive film (9) with its non-adhesive outer surface (13), and the adhesive, outwardly facing surface of the adhesive film (9) is covered by the sleeve (3).

[0065] As a result, there is no longer an adhesive bond between the adhesive film (9) and the inside of the film web wrap.

[0066] At the same time, the outer diameter of the sleeve (3) in the rotated state is the outer diameter of the entire first winding shaft (1); the outer diameter is thereby reduced compared to the original state by twice the thickness of the adhesive film (9), which allows a small clearance between the inside of the innermost layer of the film web winding and the outer diameter of the first winding shaft (1).

[0067] The first winding shaft (1) can now be pulled axially out of the film web winding, either by its own force or with a force applied from the outside.

[0068] It should be expressly noted that part of the mechanism of the adhesion release need not be located inside the winding carrier, but can also be arranged externally. Thus, in the embodiment of the first winding carrier, the sleeve (3) is to be considered the adhesion release. However, the sleeve (3) is driven, so that, in a broader view, the drive is also part of the adhesion release. While the drive can be located inside the sleeve, this is not absolutely necessary to achieve the same effect as with an adhesion release located entirely inside the winding carrier.

[0069] The same applies analogously to all conceivable embodiments of the invention presented here.

[0070] It should also be noted that the release mechanism can be operated manually or semi-manually.

[0071] The embodiment of the second winding shaft (14) (for which Fig. 2.1 and 2.2) essentially consists of a winding shaft body (15) and an adhesive film (16), wherein, during operation of the second winding shaft (14), the adhesive film (16) is retracted from the adhesive film roll (not shown) into the second winding shaft (14) before the second winding shaft (14) is removed, specifically into a winding chamber (17) provided there. The second winding shaft (14) can be rotated for this purpose.

[0072] In the embodiment of the third winding shaft (18) ( Fig. 3.1 and 3.2) This essentially consists of a stationary cylindrical body (19) which has several, in the example shown here four, recesses (20) (numbered for illustrative purposes). The recesses (20) can have a wide variety of shapes, the shape depending on the Fig. The cross-section selected in sections 3.1 and 3.2 cannot be interpreted restrictively. Rather, the recesses (20) can, for example, be point-shaped, strip-shaped, axially parallel, or helically shaped, and can be identical or different. The essential point is that recesses are formed in the otherwise continuous cylindrical surface relative to a surrounding surface around the cylindrical body (19).

[0073] The recess (20) contains a mechanically extendable and retractable surface part (21) (numbered for illustrative purposes). An outer contour of the surface part (21) is designed such that, in the mechanically extended state, it forms a continuous cylindrical surface with the cylindrical body (19) (see Figure 20). Fig. 3.1).

[0074] In the retracted state, which is set to remove the third winding shaft (18), the surface of the surface part (21) has retracted radially inwards by a retraction distance (22), so that the adhesively coated outer surface of the surface part (21) has detached radially inwards from the innermost layer of the film web winding.

[0075] The cylindrical body (19) is designed to slide as easily as possible on its outer surface, so that the third winding shaft (18) can be pulled axially out of the film web winding.

[0076] To ensure that the adhesive surface areas actually make contact with the film web being wound, a suitable recess or design can be provided so that the segments passing through the recesses, with their adhesive surface, describe a larger average winding diameter than that of the winding shaft. During winding, the adhesive surfaces of the segments then reliably transmit the necessary forces to the film in both tangential and radial directions.

[0077] The fourth embodiment of a winding shaft (23) (see Fig. 4.1 and 4.2) also essentially consists of a cylindrical body with recesses and mechanically extendable and retractable surface parts (24) (numbered by way of example). To effect the extension and retraction of the surface parts (24), a bellows (25) extending along the winding axis is arranged inside the fourth winding shaft (23) and connected at a suitable point to an opening and a pumping device. An internal pressure can be introduced into the bellows (25) via the pump, which is either higher than the ambient pressure (see 4.1 and 4.2). Fig. 4.1), or an internal pressure can be generated that is less than or equal to the ambient pressure (see below). Fig. 4.2). This allows the surface parts (24) to be deliberately moved radially outwards to enable winding, or to be drawn radially inwards to detach from the inner layer of the film tape roll and to enable the separation of the fourth winding shaft (23) from the film tape roll.

[0078] In the fifth winding shaft (26) (cf. Fig. 5.1 and 5.2) the extension and retraction of surface parts is effected mechanically, in the example presented by mechanically outwardly spring-mounted surface parts which are rotated by an internal shaft (27) (cf. Fig. 5.2) are pulled inwards against the spring force via thread or wire pulls (28) (numbered by way of example, alternatively or cumulatively, rods or a truss may be considered).

[0079] If no force is applied, a neutral state is established (cf. Fig. 5.1), in which the wire pulls (28) take the shortest path between the extendable and adjustable surface part and the inner shaft (27), whereby the surface parts move radially outwards to the maximum extent.

[0080] It should be expressly noted that the invention can also be implemented constructively in numerous other embodiments, for example by moving the surface part segments according to a magnetic or electrical principle.

[0081] In another embodiment (not shown), the adhesion to the wound web material can be reduced by applying a magnetic field, allowing the winding shaft to be removed. For example, an adhesive is known whose adhesive effect is achieved by a multitude of hair-like bodies whose dimensions are in the micro or nano range in at least one dimension.

[0082] Applying a magnetic field can reversibly disable the adhesive properties of this adhesive. For example, an adhesive can contain a powder made of superparamagnetic particles; adhesives from Evonik Degussa GmbH, Essen, can be used, especially those containing the filler MagSilica® developed there. List of reference symbols used 1 First winding shaft 2 inner bodies 3 Sleeve 4 slots 5 First edge 6 Second edge 7 Interior 8 Surface of the inner body 9 adhesive film 10 terminals 11 Outside of the winding shaft 12 winding axis 13 Outer side of the sleeve 3 14 Second winding shaft 15 winding shaft bodies 16 adhesive film 17 Roll-up room 18 Third winding shaft 19 Cylindrical body 20 Exclusion 21 Surface part 22 retreat distance 23 Fourth winding shaft 24 surface area 25 bellows 26 Fifth winding shaft 27 Inner shaft 28 Wire draw

Claims

[1] Winding support for a film web, especially winding shaft or winding sleeve, with an adhesive surface for holding the film web to be wound thereon, characterized by that the winding carrier has an adhesion release agent arranged in an interior of the winding carrier and acting on the adhesive surface. [2] Winding support according to claim 1, characterized by that the adhesive surface is formed on an outer side of a film, wherein the film is attached to the winding carrier. [3] Winding support according to claim 1 or 2, characterized by that the adhesion release device has a drive and a mechanical active means, wherein the drive is designed to act on the active means, and wherein the active means is designed to act on the adhesive surface. [4] Winding support according to claim 3, characterized by that the active agent is mounted in a rotational manner and is designed to cause a movement of the adhesive surface towards the inside by rotating around a winding axis. [5] Winding support according to claim 4, characterized by that the active agent has a sleeve. [6] Winding support according to claim 5, characterized by that the sleeve has a slot and an adhesive film holder inside. [7] Winding support according to claim 6, characterized by that an adhesive film is arranged passing through the slot from the inside, wherein the adhesive film is designed to be adhesive to the outside, but provides a sliding surface to the sleeve. [8] Winding support according to one of claims 2 to 7, characterized by that the active agent has a radial reducer. [9] Winding support according to claim 8, characterized by that the radial reducer has a fluid element with a pump. [10] Winding support according to claim 8 or 9, characterized by that the winding carrier has a segment in its surface and the radial reducer has a mechanical means of action for the segment. [11] Winding support according to one of the preceding claims, characterized by that an ejection device is provided inside. [12] Method for winding a film web onto a winding support, in particular onto a winding shaft or a winding core, comprising the steps: a. Applying the film web to an adhesive surface to hold the film web during winding; b. Winding the film web onto the winding carrier and inserting an adhesive releaser arranged inside the winding carrier, acting on the adhesive surface to release the adhesive effect between the adhesive surface and the film web; and c. Removing the winding carrier from the wound film web. [13] Plant for producing a film web, with an extruder, a continuous film-producing round or slot die, a cooling system for the film web produced, and with a deflection and a winding station, wherein the winding station is designed to wind up the film web, wherein the winding station is designed to receive a winding carrier according to one of claims 1 to 11, to wind up a film web thereon and to control an adhesion releaser arranged in an interior of the winding carrier and acting on the adhesive surface. [14] Winding station for a system according to claim 13, arranged to carry out steps b and c of claim 12, using a winding carrier according to one of claims 1 to 11.

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