CH711945A1 - Rotary punching device for a production plant for the production of nonwoven products by punching from a nonwoven strip, as well as production plant and process for the production of nonwoven products. - Google Patents

Abstract

The invention relates to a rotary punching device for a production plant for the production of nonwoven products by punching from a nonwoven strip, a production plant for the production of nonwoven products and a process for the production of nonwoven products with such a production plant. In the method for producing nonwoven products (31) with a production line, the following steps are carried out: (a) inserting a nonwoven strip (3) between a stamped sheet (12) on a punching roll (11) and a counter roll (13) in a rotary punching device (1 ); (B) punching nonwoven products (31) from the nonwoven strip (3) by interaction of the punching plate (12) on the punching roller (11) and the counter-roller (13); (c) sucking the nonwoven products (31) against the blanking sheet (12) by a suction device; (d) transferring the nonwoven products (31) from the rotary blanking device (1) by a transfer device (2), wherein a transport aspirator exerts a transport suction force greater than the suction force of the aspirator; (E) delivery of the nonwoven products (31) to a product carrier (4) or in a package (4) in a delivery area (24) of the transfer device (2). In a method for applying an embossing to a nonwoven strip (3), a embossing plate is attached to an embossing roller, the embossing roller is aligned with a coining counter roll, and when passing through the nonwoven strip (3) between the embossing roller and the embossing counter roller by means of the embossing plate embossing on the nonwoven tape (3) applied.

Description

Description FIELD OF THE INVENTION

The present invention is in the field of producing nonwoven products, preferably fiber composite products, in particular cotton pads. It relates to an apparatus and a method for producing nonwoven products with rotary punches.

BACKGROUND OF THE INVENTION

Nonwoven products, especially cotton pads, are used in everyday life in particular for cosmetic applications as disposable products. In addition to constitutional requirements, such as Soft surface, skin compatibility and the like, therefore, a cost-effective production of cotton pads is particularly desirable. Various devices and methods for producing cotton wool pads in various formats are known from the prior art.

DE 10 361 339 B4 describes a method for producing a cosmetic cotton pad comprising the method steps: a) feeding a fiber fabric; b) moistening the fiber fabric; c) water jet needling a first upper side of the fiber fabric; d) water jet needling an opposite second upper side of the fiber fabric; e) area-wise water jet needling one of the sides of the fiber fabric such that on this side of the cotton pad areally extending depressions, which are bounded in the direction of the plane on all sides of surveys are formed.

WO 98/39 237 A1 describes an apparatus for producing and stacking sheet-like pulp products, in particular cotton pads, by cutting pulp products from an endless web and transferring the pulp products to a stack. The apparatus comprises a rotary cutting unit for the continuous, serial cutting of the pulp products from the continuous web, a conveyor belt device which continuously removes the pulp products deposited by the rotary cutting unit, and a transfer station in which the pulp products are fed from the continuously moving conveyor belt device Lifting handle can be lifted and successively inserted into the stack memory.

WO 2009/035 316 A1 describes a method for producing cotton wool pads, comprising the method steps: a) providing a web of a base material for the cotton wool pads; b) placing the base material between a series of lower and upper punches which are displaceable relative to each other; c) punching a series of cotton pads of the same shape from the web by moving the lower and upper stamps to each other; d) shifting the web transversely to the feed direction; and e) repeating steps c) and d) so that the rows of cotton pads are punched out in a mutually offset arrangement.

KR 2 0140 117 153 A describes an integrated device for the production and packaging of cotton wool pads, in particular a Rotativschneidvorrichtung for the production and packaging of cotton wool pads, the cotton wool pads are made at a high rate on a Rotativschneidart and automatically counted the cotton pads and then counted be introduced into a packaging housing. The apparatus comprises a feed unit, a processing unit comprising a thermal calender for forming patterns on the cotton pads and thermally compressing the cotton pads, a cutter for cutting the compressed cotton pads in a longitudinal direction, a rotary cutter for cutting the cotton pads in a transverse direction, and a packaging unit. The packaging unit comprises a stacking device for counting the cotton pads after the processing in a processing unit has been completed, a cotton pad separator for separating the cotton pads when the number of the stacked cotton pads reaches a predetermined number, a conveyor for conveying the separated cotton pads, a slider for pushing the cotton pads, which have been conveyed by the conveyor into a packaging housing, and a control unit for controlling the feed unit, the processing unit and the packaging unit.

The solutions known from the prior art have in common that the devices for cutting and / or embossing the cotton pads u.a. expensive and maintenance-consuming and the subsequent cutting and / or embossing steps u.a. due to the circumstances of the individual cotton pads such. Mass, geometry, error prone and complicated.

For example, the Applicant Rotary stamping plants are known in which the cotton pads are punched by punching tools mounted on cutting rollers with punch cavities from a cotton wool tape. These punches are usually solid and expensive and maintenance-intensive. Since it is also complex to remove and install these punching tools, changes and / or modifications to the manufacturing process are complex to implement and associated with high costs. After the punching, the cotton pads usually undergo several conveying and stacking steps until they are handled in a packaging. In particular, the transfer of cotton pads with high susceptibility to errors is connected between these steps, since the individual cotton pads can easily be diverted from the intended paths and eliminated from the production process.

PRESENTATION OF THE INVENTION

It is therefore an object of the invention to improve the prior art of producing nonwoven products, in particular cotton pads, at least partially and / or to flexibilize.

This object is solved by the features of the independent claims. Preferred embodiments of the invention are given in the dependent claims and in the present disclosure.

For the cost-effective production of nonwoven products, in particular cotton pads, a high production rate is an important aspect. In order to ensure a high production rate while maintaining a reliable production, the resistance of components of a production plant against wear plays an important role. On the other hand, it is desirable to keep the cost of components and spare parts low and to increase reliability and production rate. For the reliability of the production, it is further important that the error rate in the interaction of the components, especially in the transfer of cotton pads, can be minimized. Further requirements are usually placed on the equipment of the production plant with components, with the largest possible reduction of set-up time is desired.

The invention relates to a rotary punching device for a production plant for the production of nonwoven products by punching from a nonwoven tape. The rotary punching device comprises a punching roller and a counter-roller, wherein the punching roller and the counter-roller are rotatably mounted about a respective axis of rotation. The rotary punching device further comprises a punching plate, which is releasably attachable to the punching roller via a holding device, wherein the punching roller is arranged to mating roll such that by mantelsynchrone rotation of the punching roller and the backing roll, the nonwoven products are punched between the punching plate and the backing roll from an introduced nonwoven tape ,

The nonwoven products are preferably fiber composite products, in particular cotton pads. The fiber composite products are preferably constructed of cotton, but may also be composed of other corresponding materials which are suitable for the production of cotton pads. It may also be provided for cotton pads suitable plastics for the fiber composite products.

The nonwoven products are, especially in cotton pads, preferably circular. The geometry is not limited to circular nonwoven products. The nonwoven products are in other preferred embodiments polygonal, in particular rectangular or oval.

The nonwoven tape from which the nonwoven products are punched out is preferably constructed in multiple layers. The individual layers of the nonwoven tape can be processed individually before the layers are joined together. Processing steps usually include embossing, pressing or cutting. Alternatively or in addition, the nonwoven tape is processed after joining the individual layers.

The web of the nonwoven tape can be dry or wet formed or processed. Dry web formation preferably takes place aerodynamically and / or by means of carding. The nonwoven bonding for the formation of the nonwoven tape can be done chemically, mechanically or thermally. The nonwoven consolidation is preferably carried out by calendering, wherein the nonwoven ribbon can be embossed during calendering. For multi-layer nonwoven tapes, the individual layers can be calendered separately. Optionally, the multilayer nonwoven tapes are additionally calendered after joining the layers. The web bonding takes place in a variant by hydroentanglement.

The rotary blanking of nonwoven products from a nonwoven tape has the advantage that the production rate is high and the production plant can be operated continuously. In conventional punching solutions with punches there are periodic interruptions between the punching steps, in which the punches must be moved apart and the fleece band must be tracked, which adversely affects the production rate.

The cutting of nonwoven products from a nonwoven tape is challenging in that the material does not have high homogeneity due to the fibers and the composite of the fibers. In a multilayer construction, there may be shifts between layers during cutting, which may be another challenge. The rotary die cutting according to the invention offers a solution which can master these challenges cost-effectively and efficiently.

In contrast to the prior art, a die plate attached to the punching roller, which co-rotates with the punching roller, is used for punching the nonwoven products. This has the advantage, inter alia, that the costs of the rotary punching device can be massively reduced, since the costs for a stamped sheet are significantly lower than the costs for a punching tool. The possibility of releasably attaching the stamping sheet to the punching roll by means of the holding device enables the stamping sheet to be easily replaced, offering the advantage that the production process of the non-woven products can be modified in a simple manner, e.g. by using different punching plates. Next, the set-up time can be significantly reduced by the ease of installation or simple interchangeability advantageously. Another advantage is that in case of wear in a cost effective and time-saving manner, the worn punching sheet can be replaced by a new punching sheet. In addition, the punching plates are particularly suitable for test purposes of punching processes due to the easy interchangeability and the low costs.

The stamped sheet has the further advantage that the height compared to the known from the prior art stamping tools can be significantly reduced. The known solid stamping tools require a minimum height in the range of 1-2 cm to ensure a stable mounting on the punching roller. When stamped sheet height can be reduced to a few millimeters or in the micrometer range, which advantageously reduces the mass to be moved and reduces the clumsiness of the rotary punching device. A reduction of the mass to be moved is particularly advantageous in view of high rotational speeds of the rotary punching device, which correlate positively with the production rate.

Another advantage of using a punching plate is that arranged on the punching sheet punching and / or embossing molds can be arranged much more compact than punching tools with punching cavities, in which due to the massive structure, a minimum distance between the punching cavities is required. This allows for increased utilization of the nonwoven web from which the nonwoven products are stamped.

In existing systems, special advantages of the invention can also be used by an embossing plate is used only for the embossing step and the punching operation is carried out with a conventional method. In this case, an embossing device is provided for a production line for embossing nonwoven products and / or a nonwoven strip. The embossing device comprises an embossing roll and an embossing counter roll, wherein the embossing roll and the embossing counter roll are rotatably mounted about a respective axis of rotation. The embossing device further comprises a embossing plate, which is releasably attachable to the embossing roller via a holding device, wherein the embossing roller is arranged to the embossing counter roller such that mantle-synchronous rotation of the embossing roller and the embossing counter roller embossed the nonwoven and / or the nonwoven products between the embossing plate and the embossing counter roller become. Some of the additional features intended for punching can also be used analogously for the embossing device. The advantages of the stamping sheet are analogously given even with embossing sheets.

In general, cutting edges in the form of elevations are formed on the blanking plate, which can punch out the nonwoven products from the nonwoven ribbon by interaction with the counter roll. The cutting edges are preferably designed to converge in cross section towards the top and typically have a cutting angle between preferably 10 ° and 40 °, more preferably 15 °, and an outer angle between preferably 30 ° and 60 °, particularly preferably 45 °.

With mantelsynchroner rotation is meant that the punching roller and the counter roll rotate at a substantially same mantle speed. Even with embossing rollers is meant with mantel-synchronous rotation that embossing roll and (embossing) counter roll rotate at a substantially same shell speed.

In an advantageous embodiment, the punching roller and the counter-roller are arranged spaced from each other such that the force exerted by the cutting edges of the punching plate in cooperation with the counter-roller cutting pressure is sufficient for punching the non-woven products. The distance between the punching roller and the counter-roller is preferably adjustable. The distance between the punching / embossing rolls and the counter roll (i.e., between the punching / embossing surface and the counter roll or counterplate) is preferably set to an accuracy (or tolerance) of 1/1000 mm-5/1000 mm. For the cutting of nonwoven such high tolerance accuracies are of particular importance.

In a particularly advantageous embodiment, the rotary punching device comprises a suction device, which is designed for releasably holding the nonwoven products on the punching sheet arranged on the punching sheet suction holes with a defined suction force.

By suction, the nonwoven products stamped from the nonwoven ribbon can be held on the blanking plate, while the punching roller continues to rotate and delivered to the nonwoven products for further follow-up steps from the stamping sheet. The suction device comprises in one embodiment arranged within the punching roller lines, which are preferably connected to a pump arranged outside the punching roller. By applying a defined suction force to hold the nonwoven products on the blanking sheet, the nonwoven products in an advantageous embodiment of a follower device, e.g. a transfer device as described in the present disclosure, by suction with a suction force, which is greater than the suction force can be removed. Under a defined suction force is understood that the suction force is predetermined, and preferably on the nonwoven products whose design or shape, or other parameters such as rotational speeds, or distance to followers, is tuned. Such transfer of the nonwoven products from the die to the follower is particularly advantageous because it provides high control and low susceptibility to failure unlike prior art solutions, e.g. with blowing operations to transfer the nonwoven products, e.g. Cotton pads.

Optionally, the suction device is connected to a suction control, wherein the defined suction force is controllable via the suction control.

The control of the suction force via the intake control has the advantage that the suction force can be precisely defined and controlled. In an advantageous embodiment, the intake control with a follower device, in particular a transfer device is connected, which indicates the suction control the value of the suction, after which the suction controls the suction so that the nonwoven products can be removed in a controlled manner from the punching plate by the follower. Alternatively or in addition, a controlled transfer is provided, wherein the defined extraction force is reduced during the transfer or set to zero. The suction control has the advantage that the defined suction force can be adapted to further parameters, in particular with advantage of the nature of the nonwoven products or rotational speeds of the punching roller.

In an advantageous embodiment, control information is detected by sensors. Advantageously, the sensors are connected to increase the accuracy of the intake control. To monitor the transfer, a sensor can be arranged on the transfer device. To capture pressure sensors or optical sensors can be used. For monitoring the jacket speeds, sensors can also be arranged on the rotary punching device and connected to a jacket control.

In one embodiment, the holding device comprises at least one permanent magnet and / or an electromagnet.

A holding device, which comprises a permanent magnet and / or an electromagnet, offers the advantage that a stamped sheet can be attached in a simple manner releasably on the punching roller. The use of an electromagnet is advantageous in that the magnetic support of the stamping sheet can be turned on and off as needed in a simple manner.

Alternatively or in addition, the holding device comprises a clamping device. With the help of the clamping device, the punching plate can be clamped on the punching roller.

Alternatively or in addition, the holding device comprises holding elements, preferably pins, or pins, hooks, bayonet locking elements or threaded bolts.

Optionally, the holding device comprises positioning elements for positioning the stamping sheet.

The positioning provide the advantage that the punching plate can be attached to the punching roller in a simple and fast manner, as it is provided for the operation of the rotary punching device. This is particularly advantageous for punching fleece where precise alignment of the punching sheet on the punching roll is important.

Positioning elements are preferably grooves, but also pins, pins, or bolts.

Alternatively or in addition, the positioning elements comprise markings.

In one embodiment, the stamped sheet stamping dies for embossing the nonwoven products.

This offers the advantage that the flexibility of use of the punching plate in the manufacturing process can be increased by adding the embossing function. In this embodiment, the embossing shapes on embossing surveys, wherein the embossing surveys have a different, usually lower, height than the also arranged on the punching sheet cutting edges. Preferably, the stamped sheet cutting edges with a height between 1 mm and 1.5 mm and with advantage embossing surveys with a height that is set back by 0 mm to 0.5 mm from the cutting edge.

Alternatively or in addition, the embossing surveys on a same height as the cutting edges, but differ in the geometric shape such that the nonwoven web embossed in cooperation with a counter-roller in the embossing mold, but is not stamped.

Preferably, the embossing elevations are trapezoidal in cross-section, or else prismatic, formed.

In an advantageous embodiment, the nonwoven products are coined simultaneously during the stamping process, which increases the production efficiency.

Alternatively or in addition, punching and embossing are carried out successively with the stamped sheet, with advantage through the use of various counter-rollers.

In a further particular embodiment, the counter-roller is equipped with a counter-plate, which may have the cutting edges of the punching plate corresponding or complementary shapes. In an advantageous embodiment, the counter-plate has complementary (i.e., concave) depressions to the cutting edges of the punching plate. This can be used with advantage in a stamped sheet with cutting edges and embossing shapes to selectively avoid the punching of the nonwoven product by interaction of the concave recesses of the counter plate with the cutting edges of the punching plate, so that only the embossing of the nonwoven product takes place. Alternatively or in addition to this variant, the counter-plate may also have one of the elevations of the embossing forms corresponding or complementary shapes. Similarly, embossing counter rollers can be equipped with counter plates.

In one embodiment, the rotary punching device has an embossing area, wherein an embossing counter roll is arranged on the embossing area such that nonwoven products held on the stamped sheet are embossed in the embossing area between the stamped sheet and the embossing counter roll.

In this embodiment, the punching of the nonwoven products is carried out in a punching area by interaction of the punching plate with a counter-roller. The punched and held by the suction on the blanking sheet nonwoven products can then be brought by turning the punching roller in the embossing area, where they are coined by interaction of the punching plate with the embossing counter roll.

In an advantageous embodiment, at the same time a first profile is embossed into the nonwoven products during punching and then in the stamping area a second profile, e.g. on the edge of the nonwoven products, embossed.

Optionally, the embossing counter roll on the embossing surveys of the punching plate corresponding elevations or depressions.

In one embodiment, the rotary punching device comprises additional punching rollers and / or rollers, over which the punched sheet is guided circumferentially, wherein the rotary punching device comprises a punching area for punching the nonwoven products and a delivery area for delivering the nonwoven products, preferably to a product carrier or into a packaging, wherein the positions of the punching area and the discharge area are determined by the arrangement of the punching rollers and / or rollers.

There may be provided two punching rollers and / or rollers or four punching rollers and / or rollers over which the punching sheet is circumferentially guided with intermediate flat sections. Due to the small overall height of the punching plate is such a guide of the punching plate, in which the curvature of the punching plate changes during the circulation around the punching rollers, possible. In known from the prior art punching tools with punch cavities such a flexible arrangement is not possible due to the massive and rigid design of the punch cavities, so that the punch cavities must be arranged with a fixed predetermined curvature on a single punching roller. This embodiment therefore has the advantage that the flexibility in the arrangement and the configuration of the components of the rotary punching device can be further increased. A further advantage of this embodiment is that the nonwoven products without a follower device, such as e.g. a transfer device, can be stacked directly in product carriers or in packaging, which can massively reduce costs and increase the efficiency of production.

Alternatively or in addition, in special embodiments, a Matrizen / Patrizenlösung be provided, wherein the die or the male is arranged on the punching roller or on the counter-roller.

Optionally, the stamped sheet stamped sheet metal sub-elements, which are connected to each other in chains, for example, via joints. In a preferred embodiment, the stamped sheet sub-elements are arranged on a carrier tape.

In the embodiment of the rotary punching device with a plurality of punching rollers, the subdivision of the punching sheet into punched sheet sub-elements has the advantage that a Beugelast occurring during rotation over the punching rollers by the changing curvature can be collected on the stamping sheet.

The invention further relates to a transfer device for transferring nonwoven products from a rotary punching device according to the present disclosure. The transfer device comprises at least one conveyor belt for conveying nonwoven products, at least one roller for guiding the conveyor belt and a transport suction device for releasably holding the nonwoven products via suction holes with a Transportansaugkraft. The transfer device has a takeover area and a delivery area for delivering the nonwoven products, preferably to a product carrier or into a packaging, wherein the conveyor belt in the takeover area is guided flat or concave on the punching plate of the rotary punching device.

The transfer device includes so far on the punching plate of the rotary punching device, as the conveyor belt preferably extends in a suitable for the transfer of the nonwoven products distance to the punching plate. The flat or concave configuration of the conveyor belt in the transfer area offers the advantage that the takeover area, in which the nonwoven products can be reliably transferred from the stamped sheet to the transfer device, can be increased. In the solutions of the prior art, in which the transfer area are formed by a roll of the transfer device and a subsequent punching roller, the transfer area is essentially limited to the point at which the surface of the roll of the conveyor belt and the punching roller come next, since both the conveyor belt and the punching roller diverge from this point due to the circular cross sections of the rollers / rollers with a relatively large opening angle. In a flat or concave configuration of the takeover area can be increased because the conveyor belt and the punching plate over a larger area close to each other, which increases the reliability of the transfer of the nonwoven products.

In a concave configuration, the concavity of the conveyor belt in the transfer area is advantageously adapted to the curvature of the punching plate, so that the conveyor belt in the transfer area can run as parallel as possible to the stamped sheet, which increases the reliability of the transfer of the nonwoven products.

The transfer area and the delivery area of the transfer device are preferably arranged opposite one another. At one end of the transfer device, the transfer region can be arranged adjacent to the rotary punching device, and the delivery region can be arranged at another end of the transfer device. However, other arrangements, e.g. a right-angled arrangement of transfer area and delivery area, be beneficial.

In the transfer area, a peeling device, e.g. arranged in the form of a tab, which can support the detachment of the nonwoven products from the stamped sheet. This may be particularly advantageous for flat nonwoven products, especially cotton pads.

In one embodiment, the transfer device comprises at least four rollers and the transfer area is delimited by two rollers, wherein the conveyor belt runs flat in the transfer area.

In a further embodiment, the transfer device comprises guides through which the conveyor belt is guided in the transfer area in a concave path.

The guides may be made of a suitable plastic, e.g. Teflon, be formed.

In a particularly advantageous embodiment, the Transportansaugvorrichtung is formed to apply a defined Transportansaugkraft, which is sufficient to replace the nonwoven products from the stamping sheet against the defined suction of the intake.

The Transportansaugvorrichtung can be connected to a pump, which can muster a defined Transportansaugkraft. The transfer of nonwoven products due to the defined transport suction force, which, contrary to the defined suction force of the suction device, removes the nonwoven products from the stamped sheet, offers the advantage that no blowing ejections are required, which significantly increases the reliability of the transfer and the control over the transfer of the nonwoven products. Preferably, the defined transport suction force is greater than the suction force of the suction device of the rotary punching device. Advantageously, the Transportansaugkraft is so sufficient that the nonwoven products are held during transport on the conveyor belt. The suction holes over which the nonwoven products can be held are advantageously formed in the conveyor belt.

Optionally, the Transportansaugvorrichtung is connected to a Transportansaugsteuerung, the defined Transportansaugkraft is controllable via the Transportansaugsteuerung.

This offers the advantage that the control over the transfer of the nonwoven products can be increased. If necessary, if e.g. lost fleece products due to a poor handover, the Transportansaugkraft can be adjusted via the Transportansaugsteuerung.

In one embodiment, a stop element is arranged in the delivery area, through which the nonwoven products held on the conveyor belt, preferably in the vertical direction, are removable.

As a stop element in the delivery area adjacent to the conveyor belt tab is advantageous by which the nonwoven products are detached from the conveyor belt when abutting the tab. By a suitable arrangement of the stop element, preferably in a downwardly directed region of the conveyor belt, the nonwoven products can be advantageously removed so that they fall vertically downwards. By a suitable arrangement of a product carrier or an open package these detached nonwoven products can be easily collected and stacked. A vertical separation offers the advantage that additional stamping elements, which are required for horizontal detachment and stacking, can be avoided.

If the conveyor belt is guided over rollers in the delivery area, the curvature of the conveyor belt in the delivery area can be used in addition to the stop element in order to support the detachment of the nonwoven products.

In one embodiment, the rollers have different radii, so that the radius of curvature of the guided over the rollers conveyor belt when running over the rollers is different in each case.

Different radii of curvature of the conveyor belt can be used for various purposes, including with advantage for detachment. It may be advantageous when rolling over rollers in a region in which the nonwoven products are to remain as reliable as possible on the conveyor belt to use rollers with large radii, so that the radius of curvature of the conveyor belt is large there. In the dispensing area, it may be advantageous to use rollers with a small radius, so that the radius of curvature of the conveyor belt is small there, which promotes the detachment of the nonwoven products by a Umlegbewegung the nonwoven products. This is particularly advantageous for flat nonwoven products, especially for cotton pads.

In one embodiment, the transfer device comprises upper and lower transfer sub-units, each comprising conveyor belts and rollers for guiding the conveyor belts and upper and lower takeover areas, wherein the transfer sub-units are arranged on the blanking sheet subsequently, that the upper and lower transfer areas at different positions on Connect punching plate.

In an operation of several parallel conveyor belts, it is typically required that the conveyor belts have a minimum distance, especially horizontally, to each other, in particular due to requirements of stacking devices in the delivery area of the transfer device. In a parallel arrangement of the conveyor belts in a plane in a plane limits this specification, the maximum possible number of simultaneously operable conveyor belts. In the prior art, a solution is known from the applicant for this, in which the conveyor belts are guided in a plane parallel to each other in the horizontal direction parallel to the transfer area, but spread to the discharge area, which requires a complicated design of the transfer device.

The embodiment with upper and lower transfer sub-units offers the advantage that the number of transfer sub-units and the conveyor belts can be increased and at the same time a suitable minimum distance between the conveyor belts of the transfer sub-units can be maintained.

In an advantageous embodiment, the upper takeover areas are arranged offset by 90 ° to the lower takeover areas.

Preferably, the upper transfer regions are then arranged laterally on the punching roller on the stamped sheet metal and the lower transfer regions are subsequently arranged on the punching sheet at the bottom of the punching roller.

The invention further relates to a production plant for the production of nonwoven products, comprising a rotary punching device according to the present disclosure and / or a transfer device according to the present disclosure and / or an embossing device according to the present disclosure.

In one embodiment, the production plant comprises at least one calendering station in which the nonwoven ribbon is calendered. The calendering station is usually arranged in front of the rotary punching device, so that the nonwoven belt can be fed to the rotary punching device after calendering. Optionally, the fleece band can be embossed in the calendering station. For embossing on calender rolls of the calendering station, a stamping plate with embossing molds is preferably applied.

In a preferred embodiment, the production plant comprises two calendering stations, wherein in a first calendering station a first layer of the nonwoven strip is calendered and in a second calendering station a second layer of the nonwoven strip is calendered. The two layers can be connected after calendering in an additional station to a nonwoven tape.

Optionally, the production plant may have an embossing station with an embossing device, wherein the embossing device comprises at least one embossing roller and at least one embossing roller, which cooperate for embossing the nonwoven belt. In the embossing station, a surface embossing of the nonwoven products, but in particular also an edge embossing of the nonwoven products, can be carried out. The embossing station can optionally be integrated in a calendering station.

The invention further relates to a process for the production of nonwoven products with a production plant according to the present disclosure, comprising the steps of: a) introducing a nonwoven ribbon between the stamped sheet on the punching roll and the counter roll; b) punching nonwoven products from the nonwoven strip by interaction of the punching plate on the punching roller and the counter-roller; c) sucking the nonwoven products to the stamping sheet by the suction device with a suction force; d) taking over the nonwoven products from the rotary die-cutting device by the transfer device, the transport suction device exerting a transport suction force which is greater than the suction force of the suction device, and e) delivering the nonwoven products to a product carrier or into a packaging in the delivery area of the transfer device.

In a preferred embodiment, prior to step a) of introducing the nonwoven product between the stamped sheet on the stamping roll and the backing roll, the method comprises one or more of: aa) carding, ab) calendering, ac) embossing the nonwoven ribbon.

Optionally, additional carding steps and / or calendering steps may be included between steps aa) carding, ab) calendering, or ac) embossing of the nonwoven ribbon.

In an advantageous embodiment, the nonwoven products are additionally embossed in step b) of the punching of nonwoven products from the nonwoven tape.

Alternatively or in addition, the nonwoven products can be embossed in a separate embossing region of the rotary punching device by means of an embossing counter roll, which cooperates with the stamped sheet.

Preferably, only suction forces and no blowing operations are involved in the transfer of the nonwoven products from the stamped sheet to the transfer device. Optionally, the nonwoven products can also be peeled off the stamping sheet with a peeling device.

With the help of a sufficient Transportansaugkraft the nonwoven products can be held on the conveyor belt and conveyed into the delivery area.

Preferably, the nonwoven products are delivered in the delivery area in the vertical direction in a product carrier or in a package.

Optionally, a stop element can replace the nonwoven products in the delivery area of the conveyor belt.

The invention further relates to a method for applying an embossing to a nonwoven tape, characterized in that a embossing plate is attached to an embossing roller, the embossing roller is aligned with a coining counter roll, and when passing through the nonwoven tape between the embossing roller and the embossing counter roller by means of Embossing plate embossing is applied to the nonwoven tape.

LIST OF FIGURES

The invention will be explained in more detail below with reference to exemplary embodiments in conjunction with the following figures and the associated description. Show it:

Fig. 1 is a perspective view of an embodiment of a rotary punching device and a transfer device;

FIG. 2 is a side view of the rotary punching apparatus and transfer apparatus of FIG. 1; FIG.

3 shows a schematic side view of an embodiment of a transfer device with a rotary punching device;

4 shows a schematic side view of a further embodiment of a rotary punching device;

Fig. 5a is a schematic representation of an embodiment of a production plant;

5b is a schematic representation of an embodiment of the inventive method;

Fig. 6 is a perspective view of an embodiment of an embossing device.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

In the following figures, embodiments of the invention are shown for purposes of illustration by means of round cotton pads punched out of a cotton wool band. However, the embodiments can also be applied to other nonwoven products, in particular also with other geometries.

Fig. 1 shows a perspective view of an embodiment of a rotary punching device 1 and a transfer device 2. The rotary punching device 1 comprises a punching roller 11, on which a stamped sheet 12 is attached. The blanking plate 12 has cutting edges 121 which serve to form a, e.g. 3-ply, cotton wool band 3 round cotton pads 31 punch out. The cutting edges 121 are arranged in a circle, so that circular cotton pads 31 are punched out. In the embodiment shown, the cutting edge is directed with a cutting angle against the interior of the circle shown and arranged with an outside angle on the outside of the circle shown. The cutting angle here is 15 ° and the outer angle 45 ° for the embodiment shown, which is particularly well suited for cutting cotton pads. Further, the stamped sheet 12 embossing bumps 122, which serve to emboss a profile in the cotton pads 31 (the embossed profiles of the cotton pads 31 are not shown in the figure). The punching roller 11 is rotatably mounted about an axis A. Upon rotation of the punching roller 11, the stamped sheet 12 rotates in the same mass. Adjacent to the punching roller 11, a counter-roller 13 is shown, which is rotatably mounted about an axis B with a synchronous shell speed. The axes A and B are designed parallel to each other. The punching roller 11 and the counter-roller 13 are arranged at a distance from one another such that a cotton wool band 3 can be introduced between the rollers 11, 13. By rotation of the punching roller 11 and the counter-roller 13, the cotton wool band 3 is guided between the rollers 11,13. By interaction of the punching plate 12 with the counter-roller 13 3 cotton pads 31 are punched out of the cotton wool band. The punching plate 12 and the counter-roller 13 are spaced apart and optionally also aligned with respect to the angular position. The punched cotton pads 31 are held by a defined suction of a suction device on the blanking plate, while the punching roller 11 continues to rotate after punching. After punching out the cotton pads 31, the remainder 32 of the cotton swathe is guided out of the space between the rollers 11, 13. Laterally on the punching roller 11 on the stamped sheet 12, a transfer device 2 is shown, which comprises upper transfer sub-units 25 and lower transfer sub-units 26. The transfer device 2 shown comprises two upper transfer sub-units 25 and three lower transfer sub-units 26, each comprising conveyor belts 21 and rollers 22a, b. The conveyor belts 21 are guided circumferentially over the rollers 22a, b. The transfer device 2 has a transfer region 23, which adjoins the stamping plate 12 laterally from the punching roller 11. The transfer region 23 is delimited by rollers 22a over which the conveyor belts 21 are guided. By suction with a defined Transportansaugkraft a Transportansaugvorrichtung, which may be greater than the suction of the suction, held on the punching plate 12 cotton pads 31 are transferred to the conveyor belts 21. It may also be that the intake force during the transfer can be reduced or reduced to almost zero. The transferred cotton wool pads 31 are conveyed on the conveyor belts 21 to the delivery area 24, in which the cotton wool pads 31 are delivered to the product carrier 4. In the figure, a horizontal discharge of the cotton pads 31 is shown. However, a vertical delivery is also preferred. During conveyance, the transport suction device ensures by exercising the transport suction force that the cotton pads 31 are held on the conveyor belts 21. Due to the arrangement with the upper and lower transfer sub-units 25, 26 five conveyor belts 21 can be operated in parallel in the embodiment shown, which would not be possible if the conveyor belts 21 were arranged in a plane next to each other, since the distance between the conveyor belts 21 would be too small, to ensure a reliable delivery into the product carrier 4. The cotton pads 31 are therefore punched close to each other to minimize the residual material. Cutting dies formed by the cutting edges 121 are therefore preferably arranged on the stamped sheet 12 with a high density.

2 shows a side view of the rotary punching device 1 and the transfer device 2 from FIG. 1. Between the punching roller 11 and the counter-roller 13 adjoining thereon, the cotton wool tape 3 is guided, from which cotton wool pads 31 are punched out. After punching, the remainder 32 of the cotton wool band 3 is led away from the punching roller 11 and the counter-roller 13. On the punching roller 11, a punching plate 12 is mounted, which punches the cotton pads 31 from the cotton wool band 3 by cooperation with the counter-roller 13. There is an upper handover subunit 25 and a lower handover subunit 26, respectively. The upper transfer sub-unit 25 adjoins the side of the punching roller 11 in the upper transfer area 23a, where the transport belt 21 is guided over the roller 22a. The lower transfer sub-unit 26 includes in the lower transfer area 23b down to the punching roller 11, wherein the transport belt 21 is guided over the roller 22a. In the embodiment shown, therefore, the upper transfer region 23a and the lower transfer region 23b are arranged at 90.degree. With angular offset from one another. Furthermore, two product carriers 4 can be seen, which in each case in an upper delivery area 24a and in a lower delivery area 24b connect to transport belts 21 guided via rollers 22b and take over there the cotton pads 31 from the conveyor belts 21. In the case of a vertical discharge of the cotton wool pads 31, the upper lower transfer sub-units 25, 26 also have different lengths in the delivery area 24a, b, so that the delivery areas 24a, b are arranged offset from one another, which allows a trouble-free delivery of the cotton wool pads 31 into the product carriers 4.

Fig. 3 shows a schematic side view of an embodiment of a transfer device 2 'with a rotary punching device 1. The rotary punching device comprises a punching roller 11, on which a punching plate 12 is mounted and a counter-roller 13. Between the punching roller 11 and the counter-roller 13 is a Cotton tape 3 so feasible that can be punched out of the cotton wool band 3 cotton pads 31 by interaction of the punching plate 12 with the backing roll 13. The punched cotton pads 31 are held by a suction device (not shown in the figure) on the punching plate. The transfer device 2 'has a transfer area 23' which is delimited by two rollers 22a 'and 22b' and in which the cotton wool pads 31 are transferred from the die plate 12 to the transport belt 21 '. In the transfer region 23 ', the conveyor belt 21' runs flat, with the result that, in comparison with the embodiments in FIGS. 1 and 2, the takeover region 23 'in which a reliable transfer of the cotton wool pads 31 is ensured is increased. The conveyor belt 21 'is guided over rollers 22a', 22b ', wherein the rollers 22a' have a larger radius than the rollers 22b '. The larger radius of the rollers 22a 'causes the cotton pads 31 when running on the rollers 22a' do not have to overcome a large curvature and thus can be reliably held on the conveyor belt 21 '. In the delivery area 24 ', the conveyor belt 21' runs over a roller 22b 'with a smaller radius, which leads to the cotton pads 31 having to overcome a comparatively large curvature, which leads to a repositioning movement of the cotton pads 31 and results in the cotton pads 31 can be easily detached from the conveyor belt 21 '. In the embodiment shown, the transfer device 2 'comprises a stop element 27 arranged on the delivery region 24' in the form of a tab 27, which supports the detachment of the cotton wool pads 31. The detached cotton pads 31 are placed in a vertical direction in a product carrier 4 'or a package 4', where they are stacked.

FIG. 4 shows a schematic side view of a further embodiment of a rotary punching device 1 '. The rotary punching device 1 'comprises a stamped sheet 12', which is divided into stamped sheet metal sub-elements 123. The blanking plate 12 'is guided over rollers 11 ", 11a' and 11b '.The blanking plate subelements 123 are connected in chains via hinges 124 (for the sake of simplicity, only some of the hinges 124 are indicated.) Alternatively, the blanking plate subelements 123 may also be mounted on a carrier tape The rotary punching device 1 'has a punching area 15 in which a cotton wool tape 3 is inserted between a punching roll 11a' and a counter roll 13 'and cotton wool pads 31 are punched out of the cotton wool ribbon 3 by cooperation of the stamped sheet metal subelements 123 with the counter roll 13' punched cotton pads 31 are held by a suction device (not shown in the figure) to the stamped sheet metal sub-elements 123 and conveyed into a stamping area 16. In the stamping area 16, the stamped sheet 12 'runs between a roller 11b' and an embossing counter-roller 14. By interaction of the stamped sheet sub-elements 123, which embossing surveys (not shown) a ufweisen, with the embossing counter roll 14 a profile is embossed in the cotton pad 31. In a dispensing area 24 ", the embossed cotton pads 31 are dispensed into a product carrier or a package 4". In the delivery area 24 ", a stop element 27 'is arranged, which supports the detachment of the cotton wool pads 31.

In the figures, the cotton pads 31 are shown in a flat shape. But the cotton pads 31 can also rest curved on the conveyor belts.

5a shows a schematic representation of an embodiment of a production plant 5. In the production plant 5, a fleece is transferred from a carding station 51a to a conveying device 57, preferably a conveyor belt. The nonwoven passes through a first calendering station 53a, from where it is conveyed to the second calendering station 53b. Between the first calendering station 53a and the second calendering station 53b, an airlay station 52 for web formation and a further carding station 51b are arranged. The carding stations 51a, b, the calendering stations 53a, b and the airlay station 52 serve for web formation as well as nonwoven bonding, so that a nonwoven web is formed. From the second calendering station 53b, the nonwoven web is conveyed to an embossing station 54, where the nonwoven web is embossed by means of an embossing device. The embossed nonwoven tape is fed to a stamping station 55. In the punching station 55, nonwoven products are punched out of the nonwoven belt by means of a rotary punching device. Subsequently to the punching station 55 a transfer station 56 is arranged, in which by means of a transfer device the nonwoven products are taken over and stacked in product carriers or packages.

Fig. 5b shows a schematic representation of an embodiment of the inventive method. In a first carding step, the web is formed. The web is then calendered for consolidation and web formation. After calendering, airlayer and other carding steps can contribute to web formation / consolidation. In a further calendering step, the nonwoven is further solidified, so that a nonwoven ribbon is formed. The nonwoven tape can be embossed in one of the calendering steps. The calendering steps can be divided so that in a multilayer nonwoven tape first and second layers are calendered separately. The layers can be joined together after the individual calendering. After the second calendering step, the nonwoven tape is embossed. Nonwoven products are punched out of the embossed nonwoven strip in a next step using a rotary punching device. The die cut nonwoven products are transferred to a transfer device which stacks the nonwoven products in product carriers or packages. In the schematic illustration, a control process is shown which controls the suction force of the suction device of the rotary punching device. The controller receives control information from the transfer device, the control information comprising values such as the transport suction force or the rotational speed of the transfer belt of the transfer device, according to which the suction force can be adjusted. The controller can also receive externally independent control information.

In the schematic illustration, a jacket control is shown, which controls the rotational speeds of the punching roller and the counter-roller in such a way that the punching rollers and the counter-rollers rotate in a synchronized manner, that is to say with substantially the same circumferential speeds.

In an advantageous embodiment, the control information is detected by sensors. Advantageously, the sensors are connected to the controller for increased accuracy, as shown in Fig. 5b. For detecting data such as the transport suction force or the rotational speed of the conveyor belt, a sensor may be arranged on the transfer device. To capture pressure sensors or optical sensors can be used. To monitor the jacket speeds, sensors can also be arranged on the rotary punching device and connected to the jacket control. A sensor 7 for monitoring the transfer area 23 'is shown in FIG.

Fig. 6 shows a perspective view of an embodiment of a separate embossing device 6, comprising an embossing roll 14a and an embossing counter roll 14b. On the embossing roll 14a, a stamping plate 61 is arranged. The embossing device 6 is preferably arranged in an embossing station, as shown in FIG. 5a. Between the embossing roll 14a and the embossing counter roll 14b, a nonwoven ribbon 3 'is inserted. By co-operation of the embossing roll 14a with the embossing plate 61 and the embossing counter roll 14b, an embossed nonwoven web 33 is formed from the nonwoven web 3 '. The embossing roll 14a and the embossing counter roll 14b rotate about axes A 'and B', wherein the rotation is substantially synchronized. In the figure, the embossing forms on the embossing plate 61 and on the embossed nonwoven 33 are indicated schematically by lines.

LIST OF REFERENCE SIGNS

I, 1 'rotary punching device II, 11a' punching roller 11b ', 11 "roller 12, 12' punching plate 121 cutting edge 122 embossment elevation 123 punched sheet sub-elements 124 joints 13, 13 'counter roll 14a embossing roll 14, 14b embossing counter roll 15 punching area 16 embossing range 2.2 'Transfer device 21,21' conveyor belt 22a, 22b, 22a ', 22b' rollers 23,23 'takeover area 23a upper takeover area 23b lower takeover area

Claims (22)

24, 24 ', 24 "discharge area 25 upper takeover subunit 26 lower takeover subunit 27, 27' stop element 3, 3 'cotton wool, nonwoven web 31 cotton pad 32 remainder of cotton swatch 33 embossed nonwoven web 4, 4', 4" product carrier, packaging 5 production plant 51a, 51b Carding station 52 Airlay station 53a, 53b Calendering station 54 Embossing station 55 Punching station 56 Transfer station 57 Conveying device 6 Embossing device 61 Embossing plate 7 Sensor A, A ', B, B' Rotary axes Claims 1. Rotary punching device (1, 1 ') for a production plant (5) for producing nonwoven products (31) by punching from a nonwoven strip (3, 3'), comprising a punching roller (11, 11a ') and a counter-roller, wherein the punching roller (11, 11a ') and the counter-roller (13, 13') are rotatably mounted about an axis of rotation (A, B), characterized in that the rotary punching device (1, 1 ') comprises a stamped sheet (12, 12'), which can be attached detachably to the punching roller (11, 11a ') by means of a holding device, the punching roller (11, 11a') being arranged in such a way to the counter-roller (13, 13 ') that the punching roller (11, 11a') can be rotated by a mantel-synchronous rotation and the counter-roller (13, 13 '), the non-woven products (31) between the stamped sheet (12, 12') and the counter-roller (13, 13 ') are punched out of an introduced non-woven band (3, 3'). 2. Rotary punching device (1, 1 ') according to claim 1, characterized in that the rotary punching device (1, 1') comprises a suction device, which for releasably holding the nonwoven products (31) on the blanking plate (12, 12 ') on the punching plate ( 12,12 ') arranged suction holes is formed with a defined suction force. 3. Rotary punching device (1,1 ') according to any one of the preceding claims, characterized in that the suction device is connected to a suction control, wherein the defined suction force is controllable via the suction control. 4. Rotary punching device (1, 1 ') according to one of the preceding claims, characterized in that the holding device comprises at least one permanent magnet and / or an electromagnet. 5. Rotary punching device (1, 1 ') according to one of the preceding claims, characterized in that the holding device comprises positioning elements for positioning the punching plate (12, 12'). 6. rotary punching device (1, 1 ') according to any one of the preceding claims, characterized in that the stamped sheet (12, 12') comprises embossing dies for embossing the nonwoven products (31). 7. Rotary punching device (1, 1 ') according to one of the preceding claims, characterized in that the rotary punching device (1, 1') has a stamping area (16), wherein the stamping area (16) an embossing counter-roller (14) is arranged in such a manner in that nonwoven products (31) held on the stamped sheet metal (12, 12 ') are embossed in the stamping area (16) between stamped sheet metal (12, 12') and embossing counter roll (14). 8. Rotary punching device (V) according to one of the preceding claims, characterized in that the rotary punching device (V) comprises additional punching rollers (11, 11a ') and / or rollers (11b', 11 ") over which the punching plate (12, 12 ') is guided circumferentially, wherein the rotary punching device (1') a punching area (15) for punching the nonwoven products (31) and a delivery area (24 ") for delivering the nonwoven products (31), preferably to a product carrier (4) or in a Packaging (4 ', 4 "), wherein the positions of the punching area (15) and the discharge area (24") by the arrangement of the punching rollers (11,11a') and / or rollers (11b ', 11 ") are determined , 9. Rotary punching device (1 ') according to claim 8, characterized in that the stamped sheet (12') stamped sheet sub-elements (123) which are connected in chains via hinges (124) or arranged on a carrier tape. 10. Transfer device (2, 2 ') for taking over nonwoven products (31) from a rotary punching device (1, 1') according to one of claims 1 to 7, comprising at least one conveyor belt (21, 21 ') for conveying nonwoven products (31). at least one roller for guiding the conveyor belt (21, 21 ') and a transport suction device for releasably holding the nonwoven products (31) via suction holes with a transport suction force, the transfer device (2, 2') having a transfer area and a discharge area (24, 24 '). ) for delivering the nonwoven products (31), preferably to a product carrier (4) or into a packaging (4 ', 4 "), characterized in that the conveyor belt (21, 21') in the transfer region (23, 23 ', 23a, 23b) is guided flat or concave on the blanking plate (12, 12 ') of the rotary punching device (1, 1'). 11. Transfer device (2, 2 ') according to claim 10, characterized in that the transfer device (2, 2') comprises at least four rollers (22a, 22b, 22a ', 22b') and the transfer region (23 ') of two rollers (22a ', 22b') is limited, wherein the conveyor belt (21,21 ') in the transfer region (23') is flat. 12. transfer device (2, 2 ') according to claim 10, characterized in that the transfer device (2, 2') comprises guides through which the conveyor belt (21, 21 ') in the transfer area (23, 23') in a concave path to be led. 13. Transfer device (2, 2 ') according to one of claims 10 to 12, characterized in that the transport suction device is adapted to apply a defined transport suction, which for the replacement of the nonwoven products (31) from the stamped sheet (12,12') against the defined Suction of the suction sufficient. 14. Transfer device (2, 2 ') according to claim 13, characterized in that the Transportansaugvorrichtung is connected to a Transportansaugsteuerung, wherein the defined Transportansaugkraft is controllable via the Transportansaug-control. 15. Transfer device (2, 2 ') according to any one of claims 10 to 14, characterized in that in the delivery area (24,24') a stop element (27,27 ') is arranged, through which on the conveyor belt (21,21 ') held nonwoven products (31), preferably in the vertical direction, are detachable. 16. transfer device (2, 2 ') according to any one of claims 10 to 15, characterized in that the rollers (22a', 22b ') have different radii, so that the radius of curvature of the over the rollers (22a', 22b ') out Transport belts (2 V) when running on the rollers (22a ', 22b') is different in each case. 17. transfer device (2, 2 ') according to any one of claims 10 to 16, characterized in that the transfer device (2, 2') upper and lower transfer sub-units (25, 26), which in each case conveyor belts and rollers (22a, 22b) for guiding the conveyor belts (21) and upper and lower takeover areas (23a, 23b), wherein the transfer sub-units (25, 26) are arranged on the blanking plate (12, 12 ') in such a way that the upper and lower takeover areas (23a, 23b ) at different positions on the punching plate (12, 12 '). 18. transfer device (2, 2 ') according to claim 17, characterized in that the upper transfer areas (23a) are arranged at 90 ° angularly offset from the lower transfer areas (23b). 19. embossing device (6) for a production line (5) for embossing a nonwoven strip (3, 3 ') and / or nonwoven products (31) comprising an embossing roll (14a) and an embossing counter roll (14b), wherein the embossing roll (14a) and the embossing counter roller (14b) are rotatably mounted about an axis of rotation (A ', B'), characterized in that the embossing device (6) comprises a embossing plate (61) which can be detachably attached to the embossing roller (14a) via a holding device, wherein the embossing roll (14a) to the embossing counter roll (14b) is arranged such that the nonwoven strip (3, 3 ') and / or the nonwoven products (31) between the embossing plate (14) by mantel-synchronous rotation of the embossing roll (14a) and the embossing counter roll (14b) 61) and the embossing counter roll (14b) are embossed. 20. Production plant (5) for the production of nonwoven products (31), comprising a rotary punching device (1, 1 ') according to one of claims 1 to 9 and / or a transfer device (2, 2') according to one of claims 10 to 18 and / or an embossing device (6) according to claim 19. 21. A method for producing nonwoven products (31) with a production plant (5) according to claim 20, comprising the steps: a. Inserting a nonwoven ribbon (3, 3 ') between the stamped sheet (12, 12') on the punching roll (11, 11a ') and the counter roll (13, 13'); b. Punching nonwoven products (31) from the nonwoven strip (3, 3 ') by interaction of the punching plate (12, 12') on the punching roller (11, 11a ') and the counter-roller (13,13'); c. Sucking the nonwoven products (31) against the stamped sheet (12, 12 ') by the suction device; d. Transferring the nonwoven products (31) from the rotary punching device (1, 1 ') by the transfer device (2, 2'), the transport suction device exerting a transport suction force which is greater than the suction force of the suction device; e. Delivery of the nonwoven products (31) to a product carrier (4) or in a package (4 ', 4 ") in the delivery area (24, 24') of the transfer device (2,2 '). 22. A method for applying an embossing on a nonwoven tape (3, 3 '), characterized in that a embossing plate (61) is attached to an embossing roll (14a), the embossing roll (14a) is aligned with a coining counter roll (14b), and when passing through the nonwoven strip between the embossing roll (14a) and the embossing counter roll (14b) by means of the embossing plate (61) embossing on the nonwoven strip (3, 3 ') is applied.