WO2017037273A1

WO2017037273A1 - Embossing device

Info

Publication number: WO2017037273A1
Application number: PCT/EP2016/070788
Authority: WO
Inventors: Michael Niklaus
Original assignee: Autefa Solutions Germany Gmbh
Priority date: 2015-09-03
Filing date: 2016-09-03
Publication date: 2017-03-09
Also published as: DE202015104671U1; EP3344810A1; EP4001486A1; EP3344810B8; EP3344810B1

Abstract

The invention relates to an embossing device (4) and to an embossing method for a material web (2) of a textile fibrous material, in particular a fiber non-woven, comprising an embossing tool (5) which embosses and optionally perforates the material web (2) with fluidic negative pressure and/or fluidic overpressure. The embossing tool (5) has an embossing body (7) with a perforated body shell (9), the web material (2) resting on said body shell.

Description

DESCRIPTION

Embossing device The invention relates to an embossing device with the

Features in the preamble of the main claim.

Embossing devices with embossing rollers are known from practice, which are based on a cooled web of a textile fiber material, in particular a nonwoven web.

Interweave non-woven fabric. These embossing rollers are heated.

It is an object of the present invention to provide a

show improved embossing technique.

The invention solves this problem with the features in the main claim.

With the claimed embossing technique, i. of the

Embossing device and the embossing process, can be more efficient in terms of function and quality of the

Embossing process and construction and energy costs are achieved. Embossing can be done for different purposes, e.g. for solidifying and possibly perforating the web or for decoration purposes. The web preferably consists of a textile

Fiber material, e.g. may be a nonwoven nonwoven fabric.

In the claimed embossing technique, the web is embossed by a stamping tool with fluidic underpressure and / or fluidic overpressure. The web can

in particular with a fluid flow, preferably a gas flow, embossed and optionally also perforated. For this purpose, the embossing tool has an embossing body with a perforated body shell, against which the material web rests. The fluidic pressure can act here from the inside of the embossing body and / or from the outside. The fluidic Pressure or the fluid flow moves the applied web portion in the underlying through hole of the body shell and deforms this web area while plastic and durable to form a local bead or a dome. The curvature direction of the

Deformation and fluid flow are the same direction.

A sharp, in particular jet-like, and possibly very hot fluid flow is suitable for a perforation of the e.g.

already produced by negative pressure on the embossing body and located in the local perforation there local deformation of the web particularly favorable. In particular, a nozzle or aperture opening of the overpressure device can emit a thin, preferably hot, fluid flow which perforates a region of the material web which has already been deformed, if necessary.

The embossing body may have any suitable shape and is preferably designed as a rotating embossing roller. At the perforation of the body shell, the web material is drawn locally into the interior of the embossing body or the body shell and thereby deformed and solidified. The perforated body shell is preferably smooth-walled on the outside directed to the web.

The fluid flow used for fluidic embossing, in particular gas flow, can have a lower temperature than the applied web, in particular the

pressurized or through-flow web area, have. This temperature difference is favorable for the formation and solidification of the local deformation.

On the other hand, the said fluid flow can have the same or higher temperature than the applied web, whereby a cooling of the web is delayed and its plastic deformability is maintained longer. This can be advantageous for a multi-stage embossing deformation and / or for a subsequent perforation be .

In a simple embodiment, a negative pressure applied to the embossing body can be sufficient from a preferably controllable negative pressure source, in particular a suction device. In another embodiment, an additional on the opposite web side or

Outside acting overpressure of a preferred

controllable overpressure source, in particular one

Blowing device, act. This can be a

Fluid flow, in particular gas flow, against the

Embossing body and the product web there are directed, which causes or supports the said deformation of the web in the perforation of the embossing body. In a further modification, only such an overpressure or an overpressure source, in particular a blowing device, can be present.

Further, the use of a counter body is advantageous, which bears against the free outer side of the web, so that the web between the embossing body and the counter body can be held at a contact point and possibly clamped. The counter body may be formed on the outside smooth-walled. He can also punch

have, which is adapted to the perforation of the embossing body. This allows the generation and direction of a

Fluid flow from the counter body through the web into the embossing body. This can ensure a particularly favorable and permanent deformation of the web.

A counter-body is also for a purposeful

Temperature control of the web at the contact point and / or for a temperature control of fluid flow of

Advantage. The vacuum and / or overpressure source can be arranged separately or possibly also connected to a circulation device. The said fluid flow can be guided in the circulation and possibly also processed. The fluid flow can be conditioned as required, for example in terms of temperature and / or humidity. Furthermore, it is possible to additionally or alternatively supply ambient air into the counter-body. The embossing body can be assigned one or more counter-body. In a multiple arrangement, the counter-body may be the same or different. You can, for example, a different perforation,

in particular different hole sizes. You can also without or with a blowing device,

especially for perforating, be equipped.

With the perforation of the embossing body and possibly the perforation of the counter body, a desired embossing pattern in the

Web are generated. As a result, decorative or other effects can be achieved in addition to the consolidation of the web. In addition, can be through a

Lochungsabstimmung the shape and size of a fluidic deformation, in particular embossing, the web

influence and adjust.

The claimed embossing technique can be inside or

outside a heating device, in particular a furnace, are carried out for thermo-consolidation of the web. The preferred embossing outside and close to the heater has the advantage that in the

Web existing heat and temperature can be used to achieve a plastic and permanent deformation of the web and the fiber material contained during embossing. In this case, a temperature difference between the web and the embossing tool may be advantageous. With a cooling device for the stamping tool can the temperature difference can be optimized as well as controlled and regulated.

The claimed embossing technique is particularly suitable for a continuously moving web. The training of the

Embossing tool with a rotating and preferred

cylindrical embossing body and possibly a correspondingly formed, preferably cylindrical, counter body is of particular advantage. Furthermore, synchronized drives for the said embossing and counter-body or a common drive are favorable.

The embossing device can be an independent structural unit, which is a heating device for the web, e.g. a thermobonding furnace, can be assigned. This can be done by original equipment or retrofitting or

Conversion done. A positioning device is advantageous for the spatial assignment. The embossing device can also with the heater to a

Heat treatment device can be combined.

For the efficient utilization of the heat energy present in the material web, the embossing device can be arranged very close to the heating device, in particular at this heating device

be grown. The close allocation of heating device and embossing device saves energy as well as space and construction costs. Alternatively, a larger distance between the heater and embossing device is possible, with an additional heating means may be interposed. A detection device for process parameters, in particular temperature (s), allows optimal control of the

Embossing process. To the embossing device can connect a cooling line of any kind. With the embossing process can the aforementioned

Solidification of the web can be achieved. This also brings advantages with the guidance and the transport of the Web with itself. The web can be through the

can be quickly and effectively mechanically stabilized immediately after the heating process, and can then be guided and transported more easily and safely. Unwanted deformations of the web on transport stretch behind the heater can be avoided.

A particular advantage of the claimed embossing technique is the ability to increase performance and increase the speed of the moving web.

Due to the heat energy already contained in the web, a spatially and temporally short loading of the web with the embossing tool and the fluidic underpressure and / or overpressure is sufficient for the embossing process. The introduced deformations in the web are quickly fixed by thermal adhesion or fusion of the fibers. This is the aforementioned

Temperature difference between the web and embossing tool and / or fluid flow particularly favorable. The fibers in the web can be entrained or deformed without adhesion risk of the fluid flow and fixed only at the end of the embossing process. In addition, fiber fly through the embossing body and possibly the Gegegenkörper

prevented, in particular when the web already pre-consolidated by the heater and the fibers contained are bound.

The previously known Prageemrichtungen with heated

In contrast, embossing rollers have a significantly reduced efficiency and efficiency. The heat input from the embossing roller in the web takes a certain amount of time, which significantly reduces the possible web speed. in the subclaims are further advantageous

Embodiments of the invention indicated. The invention is illustrated by way of example and schematically in the drawings. In detail show:

Figure 1: a schematic representation of a

Fiber treatment plant with one

Embossing device and a

Heat treatment device, Figure 2: a variant of the fiber treatment plant of

FIG. 1,

Figure 3: a broken view of a

Embossing device on a heating device,

Figure 4: a fragmentary and enlarged

Representation of the embossing device of Figure 3,

Figure 5: a variant of a pair of rollers and

FIG. 6 shows a variant of the embossing device of FIGS. 3 and 4.

The invention relates to a stamping device (4) and a stamping method for a web (2). The invention further relates to a heat treatment device (1), which is formed by an embossing device (4) and a heating device (3) and a heat treatment process. Finally, the invention also relates to a

Fiber treatment plant (29) with such

Embossing device (4) and possibly also one

Heat treatment device (1). The invention also includes an in the fiber treatment plant (29)

performed treatment method for fibers. The web (2) consists in the shown

Embodiments of a textile fiber material. Preferably, it is a nonwoven fibrous material, e.g. a nonwoven fiber fleece. The

Fiber material is preferably short

cut fibers. The fibers may be synthetic fibers, in particular so-called BiCo fibers or two-component fibers. Alternatively, natural fibers or fiber mixtures are possible.

Figures 1 and 2 show variants of a

Fiber treatment plant (29) for the manufacture and

Processing such a web (2). In one

entrance side pile fabricators (30), e.g. a card or carding machine or an airlay machine, a single-ply or multi-ply fiber web is produced which forms the web (2) at an early stage. The batt is then fed to a leveler (31), e.g. a cruciate ligament player,

fed and there to a multi-layer nonwoven fabric

stored. This can then be in a

Heating device (3) are thermally solidified. This process is also called thermobonding. The heated fibers in the web (2) melt at least partially and adhere to each other or connect

together.

Subsequently, the moving in the transport direction (25) hot web (2) passes through an embossing device (4), in which the web (2) is subjected to a mechanical embossing process, the fluidic negative pressure and / or overpressure in the manner described below

is carried out. Here impressions can be introduced into the web (2). The web (2) can also be perforated. To the embossing device (4) can be a cooling section (28) for the web (2)

connect. Furthermore, any further processing, in particular also a cutting, winding, storing or the like. possible.

In the variant of FIG. 1, the embossing device (4) is arranged in the immediate vicinity of the heating device (3). You can directly behind the heater (3)

be arranged or attached to the heating device (3). In the variant of Figure 2, a greater distance between the heater (3) and the embossing device (4) is present. If this should lead to excessive cooling of the web (2), an additional heating means (34) arranged in the intermediate space and the

Embossing device (4) upstream. Alternatively or additionally, one or more other measures to maintain the advantageous for the embossing process web temperature can be taken.

In Figure 1 is also schematically a

Positioning device (33) for the embossing device (4) shown. Thus, the embossing device (4) can be adjusted in one or more spatial axes, in particular in the height and / or horizontal distance and adapted to the heater (3) and possibly the position of the web (2). The positioning device (33) can also be present in the other embodiments.

The heating device (3) and the embossing device (4) can together form a heat treatment device (1). The embossing device (4) can be an integral part of the heat treatment device (1).

represent. It can alternatively form a separate unit.

Figures 3 and 4 show the heat treatment device (1). The heater (3) is e.g. formed as a furnace with a surrounding housing (26) and heats the

Web (2) on. This can be done for example with a hot gas. The heating device (3) and / or the Embossing device (4) has a conveying device (22) for the preferably continuous conveying of the material web (2). Alternatively, the conveying movement may be discontinuous, in particular intermittent. The web (2) is transported in the transport direction (25) and leaves the

Heating device (3) and the housing (26) by a

Spout (27). The additional heating means (34) can

also be designed as an oven or alternatively as a radiant heater or in another way.

The conveyor (22) can be designed in several parts. It has e.g. in the oven area a continuously moving and preferably continuously driven endless

Transport belt (24) on which the web (2)

rests. In the area of the embossing device (4), the

Conveyor (22) a web guide (23) with a plurality of and at least partially driven deflection and

Drive rollers for the web (2) on. The embossing device (4) has an embossing tool (5) for

Carrying out the embossing process on the running web (2). In the embossing process, plastic or permanent deformations are introduced into the material web (2) on a fluidic path. These are local and discreet

Deformations. They can be used as imprints on the

acted side, in particular top, the

Web (2) be formed. The imprints can also be perforated. Here, e.g. local

Through holes in the end or crest area of the indentations formed as limited depressions

be introduced.

The embossing device (4) is provided and designed for a hot material web (2). The embossing tool (5) can have a lower temperature than the hot web (2). The embossing device (4) and the embossing tool (5) are connected to the web (2) and the web material, preferably fiber material, adapted.

The stamping tool (5) impresses the web (2)

fluidic negative pressure and / or fluidic overpressure. In particular, embosses and possibly perforates the embossing tool

(5) the web (2) with a fluid flow (6), preferably as a gas flow, in particular as

Air flow is formed. Alternatively, the

Fluid flow (6) include a liquid.

The embossing tool (5) has an embossing body (7) with a perforated body shell (9) on which the web (2) rests. The embossing body (7) may have any suitable shape, e.g. a cubic or cuboidal shape, have. In the shown and preferred

Embodiment is the embossing body (7) as a rotating embossing roll with a perforated cylinder jacket (9)

educated . in the illustrated embodiment, the web (2) from the outlet (27) of the heater (3) occurs

preferably straight extension and e.g. in the horizontal direction. You can after the spout (27) from

Conveyor (24) are detached and then arrives at or on the in the transport direction (25) following

Embossing body (7). On the rotating embossing roller shown

(7), the web (2) while a larger

Angular range or wrap angle of e.g. about 90 ° or more to rest and be deflected. Figures 3, 4 and 6 show various embodiments.

The embossing tool has in the illustrated and preferred embodiments, a counter-body (8), the

Embossing body (7) across the web (2) is arranged opposite. Between embossing body (7) and counter body

(8) a gap is formed through which the web (2) is guided. Here can be a contact point (32) of the body (7,8) and the web (2) are formed, on which the web (2) can be guided and possibly clamped. The contact point (32), depending on the body geometry as

Contact surface or contact line to be formed. The embossing body (7) can be above or below the web

(2) can be arranged. This also applies if no counter-body (8) is present. An embossing body (7) can be associated with a plurality of counter-bodies (8, 8 '). The counter-body (8) also has a cylindrical shape and can be designed as a rotating counter-roller. He may also have a perforated body shell (11). The counter body (8) may be formed as a hollow body. In a modification of the embodiment shown, the

Counter-body (8) another and e.g. cubic or

have cuboid shape.

The contact point (32) or gap is e.g. approximately in the middle of the web loop on the embossing roll (7). The counter-roller (8) is e.g. arranged obliquely below the embossing roll (7). The rollers (7,8) rotate in opposite directions and move circumferentially on the

Contact point (32) in the running direction (25) of the web (2). The rotationally symmetrical bodies (7, 8) can be mutually connected, e.g. lie radially opposite. The corpus coats (9,11) of both bodies (7,8) point in the shown

Embodiments on to the web (2) or to

Pad (32) directed outside a smooth wall or surface.

The embossing device (4) has a preferably controllable vacuum source (14), which is fluidically connected to the preferably hollow embossing body (7). The vacuum source (14) is e.g. as a suction device

educated. From the vacuum source (14) is a

Vacuum applied to the perforation (10) of the body shell (9), which the adjacent web material in the Hole (10) sucks and thereby deformed like a bead. The cavity formation can be present in the embossing body (7) or possibly only in the body shell (9). In the illustrated embodiment of Figure 3, the

Embossing device (4) also a preferably controllable overpressure source (15), which directs a fluid flow (6) against the embossing body (7) and there adjacent web (2). The fluid flow (6) may be different, e.g. as a coherent curtain or in the form of discrete flow strands or

Fluid jets. The overpressure source (15) is e.g. when

Blowing device formed, which is a gas flow,

in particular an air flow, emitted. The

Fluid flow (6) may alternatively be formed by a liquid in the aforementioned manner.

The negative pressure source (14) and the overpressure source (15) can be arranged separately from one another and with regard to the fluid guidance and optionally also the temperature control

be independent of each other. FIG. 3 shows such a design.

In the other embodiment of FIG. 4, the negative pressure source (14) and the overpressure source (15) can be fluidly connected to each other by a fluid return (18). The fluid flow (6) is thereby circulated in a substantially closed circuit. The negative pressure source (14) and the overpressure source (15) can also be connected to a circulation device (16). You can do a structural and

forming a technical device, e.g. in the form of a fan or fan with suction and blast side. The fluid flow (6) can in one variant a

Lower temperature than the applied web (2). It has, for example, the external ambient temperature outside the heating device (3) or can be cooled with a cooler, such as a heat exchanger. The lower temperature is advantageous for the formation and subsequent solidification of the aforementioned web deformations on the perforation (10) of the embossing body (7). The fluid flow (6) directed against the perforation (10) can be the deformation of the product web region adjacent thereto

support. It can be a relatively large

Have flow cross-section.

The embossing device (4) can furthermore have a cooling device (20) for the embossing tool (5). This can e.g. an air or water cooling, with which the

Embossing body (7) and / or the counter-body (8), in particular their respective body shell (9,11) is cooled. The cooling device (20) can be used in addition to the

existing cooling of the fluid flow (6) may be present.

The embossing device (4) can have a fluid treatment (19) for the supplied or circulated fluid flow (6). The fluid treatment (19) may be e.g. a

Filtering or otherwise cleaning the supplied or circulated fluid flow (6) effect. If necessary, it can also be used for conditioning, in particular cooling, dehumidifying or the like. to care.

The overpressure source (15), in particular the

Blowing device, is e.g. with a against the embossing body (7) and there touching web (2) directed nozzle (17) fluidly connected. In the shown

Embodiments, the nozzle (17) in the hollow

Counter-body (8) preferably arranged stationary and is the outlet side against the contact point (32) of the embossing body (7), counter body (8) and web (2) directed. The nozzle (17) emits said fluid flow (6) through the perforation (12) of the counter body (8) and the

Web (2) and the perforation (10) of the embossing body (7). The nozzle (17) is preferably radially with its mouth opening against the body shell (11) of the

Counter roller (8) directed. The mouth opening may be formed in any suitable manner. It can also be adapted to the perforation (s) (10, 12). It can e.g. as a continuous slot or as a series of

discrete small punctate or slit-like

Be designed orifices. The mouth opening may be present individually or multiple times.

The perforation (10,12) of the embossing body (7) and the

Counter body (8) can be coordinated. They have one or more openings in the

Body shell (9,11) for the fluid flow (6) on. You can also for the passage of the fluid flow (6) have a similar opening distribution and be arranged in alignment. For the passage of the fluid flow (6) come the openings of the perforations (10,12) in the

preferably synchronously rotating rollers (7,8) on the

Contact point (32) each to cover.

The openings of the perforation (10) of the embossing body (7) may be larger than the openings of the perforation (12) of the counter body (8) in the illustrated embodiment of Figure 4. In the variant of Figure 5, the openings of the

Perforations (10.12) are the same size. The size ratios of the openings of the perforations (10,12) can be varied and adapted to achieve the desired deformation or perforation.

The size and shape of the openings of the Pregeseitigen perforation (10) determine the shape of the plastic web deformations generated during the embossing process. The

Shaping can be arbitrary, for example punctiform with circular, oval or primate outer contour or rod-shaped or cross-shaped or in waveform etc.

By the negative pressure and / or the overpressure or blowing pressure, the web is pressed into the openings of the perforation (10) and thereby deformed like a bead. The

Fluid flow (6) can also flow through the deformed material web areas in the manner mentioned and optionally perforate. FIG. 5 shows this arrangement of embossing body (7),

Counter body (8) and a web located therebetween at the contact point (32) (2). Figure 5 also illustrates on the left side of the training of

bead-like deformation of the web (2) by the

Fluid flow (6) in an opening of the perforation (10) of the embossing body (7). For the other openings this deformation is not shown for the sake of clarity.

Figure 5 also shows a primarily for embossing

bead-like deformations provided pairing and

Design of embossing and counter body (7,8) and their perforation (10,12).

The perforation (10) of the embossing body (7) and possibly the perforation (12) of the counter body (8) can be arranged and designed to form a desired embossing pattern. The perforations (10, 12) can in particular consist of a uniform or irregular matrix of the

Lochungsöffnungen exist. The perforation openings are arranged distributed over the respective body shell (9,11). The distribution may e.g. be uniform according to Figure 4 and 5, wherein a plurality of axial and over the entire body length extending rows of holes are arranged distributed uniformly over the body or cylinder circumference. In another embodiment, the

Rows of holes extend only over a portion of the body length or possibly also be interrupted. Furthermore, can a plurality of perforation openings may be arranged in a different pattern and a different distribution, which may be arranged only locally on the body shell and solid

Sheath areas is surrounded. Such local clusters of punched holes may be repeated over the body shell with a uniaxial or multiaxial offset, e.g. be arranged with offset in the axial and circumferential direction of the rollers (7,8). The Lochungsausbildung can also be changed if necessary. The respective training of

Punching arrangement can be both deformation and

Solidification purposes, as well as serve decorative purposes.

The embossing body (7) and the counter body (8) may have a common or synchronized drive technology (13) for their movement, in particular rotation. By the drive technology (13) and the investment or clamping contact on the one hand, the web (2) is driven and

advanced. On the other hand, the above-mentioned aligned arrangement of the perforations (10,12) at the point of passage of the fluid flow (6) is ensured.

The drive technology (13) can have one or more drives, in particular rotary drives. For controlling the drive technology (13) or its drive (e), a suitable controller (not shown) may be present. To this control, the other components of the embossing seal (4), in particular the positive pressure and / or negative pressure source (14,15) may be connected. In the embodiments shown in FIGS. 3 and 4, the nozzle (17) locally directs a defined fluid flow (6) against the perforated body shell (11) of the preferably rotating counter body (8). From the openings of the

Perforation (12) occur thereby discrete and each directed against an opening of the perforation (10) flow strands. By a negative pressure in the embossing body (7) or its body shell (9) also ambient air can be sucked become .

The negative pressure in the embossing body (7) produces a bead-like deformation in the perforation (10), which can be additionally perforated with a sharp fluid flow (6) from the nozzle (17). In a perforation (12) of the counter body (8) with relatively small openings is the bead-like

Deformation smaller or flatter than in a larger perforation (12) according to Figure 5.

The ambient air can pass through the gap at the

Contact point (32) and / or from a hollow counter body

(8) are sucked through the perforation (12). One

Suction of ambient air outside the contact area (32) of the bodies or rollers (7, 8) can be prevented, e.g. by a corresponding cover of the perforation (s)

(10,12) of the embossing body (7) and / or the counter body

(8th) . in another and shown in Figure 6

Embodiment, the same effect by a in the hollow counter-body (8) arranged aperture (35) can be achieved, which has only a local aperture at said contact point (32) of the body (7,8) and the passage point of the fluid flow (6) , In this case, the overpressure source (15) can build up an overpressure in the entire hollow interior of the counter body (7) or a possibly multi-layered and hollow body shell (11).

In a further embodiment, the counter body (7) can be omitted, with only the nozzle (17) is present.

Furthermore, it is possible to provide only one overpressure source (15) or only one vacuum source (14). in the

The latter case may be due to the negative pressure in the

Embossing body (7) or its body shell (9) are sucked in particular ambient air. In a further embodiment according to FIG. 4, the overpressure device (15), in particular its nozzle (17), can emit a sharp and preferably jet-like fluid flow (6). The same can be done with a corresponding

Design of an opening of the diaphragm (35) can be achieved.

The discrete and directed against an opening of the perforation (10) fluid jets have a very small diameter and can have a particularly high speed. This can be done by a particularly small

Opening diameter of the perforation (12) of the counter body (8) and / or by a corresponding mouth design of the nozzle (17) or the diaphragm (35) can be achieved.

The fluid jets are directed against the central region of the material, e.g. by a factor of 10, larger holes of the perforation (10) on the embossing body (7) and the local

primarily generated by negative pressure and possibly by

Ambient air cooled and solidified local deformation of the web (2). The sharp fluid flow (6) or the fluid jets may be heated and have a high temperature, which also thermally deforms the struck fibers of the web, and e.g. melts. You can perforate the deformation areas encountered. The sharp fluid flow (6) or the fluid jets can act like a jet meter. For this is one

Actuation of the web (2) in the central region of the wrap on the embossing body (7) advantageous.

In addition, in a further and not shown variant, a different shape and arrangement of the counter-body (8) is possible, e.g. as embossing roll with preferred

radial pin or needle-like projections with

coordinated number and distribution is formed. These grip into the openings of the perforation (10) and mechanically support the fluidic and by negative pressure on Embossing body (7) caused deformation process and / or cause perforation of the deformations.

In the embodiments shown are the

Components of the embossing tool (5) each individually

available. Alternatively, multiple arrangements are possible. In particular, a plurality of nozzles (17) may be arranged in the counter-body (8) or free-standing. The embossing device (4) may have an adjusting device (21) for the delivery of the embossing tool (5) to the web (2). As a result, the embossing body (7) and / or the counter-body (8) can be adjusted as needed. The controllable adjusting devices (21) are indicated schematically in Figure 4 by arrows.

As shown in FIGS. 3 and 4, the embossing device (4) is arranged behind the heating device (3) in the transport direction (25) of the moving material web (2). It is located near the outlet (27). In the illustrated and preferred embodiments, the embossing device (4) is arranged directly behind the heating device (3).

Preferably, the embossing device (4) is attached to the

Heater (3) and its housing (26) grown. The emerging from the outlet (27) web (2) thereby enters directly into the embossing device (4). The

Web (2) cools on this short path not or only insignificantly. The embossing device (4) forms a

Hardening device for the web (2). The

Web (2) is mechanically stabilized and solidified in the manner mentioned by the mechanical indentations and / or perforations. In

Transport direction (25) behind the embossing tool (5) is the mechanical strength, especially the

Tensile strength in the direction of travel, so great that the web (2) guided over deflecting and driving rollers of the web guide (23) and with terminal connection or possibly also at

appropriate roller training with positive locking

can be driven.

The embossing device (4) and / or the

Heat treatment device (1) may have a detection device (32), indicated in FIG. 3, for one or more process parameters. This can e.g. the temperature of the web (2) and / or the embossing tool (5). Furthermore, the railway and / or

Tool speed, the web structure, etc. are detected. The detection device (32) can be used for the

Parameter detection one or more suitable sensors or the like. Comprise detection means, e.g. one

Temperature sensor, a thermal imaging camera or the like .. Furthermore, a control, not shown, is present, to which the detection device (32) and the other

driven components of the embossing device (4)

are connected. A connection possibility can also be used for the other components of the

Heat treatment device (1) or the entire system exist. The controller controls and regulates the

Embossing process and possibly other processes or devices.

FIG. 6 shows a variant of the embossing device (4) or of the embossing tool (5), in which two or more counter-rollers (8, 8 ') are assigned to an embossing roller (7). The

Counter rollers (8,8 ') are in the direction of the

Web (2) and distributed on the circumference of the embossing roller (7) arranged one behind the other. The counter rollers (8,8 ') may have a different perforation (12,12'). The size and distribution of the openings of the perforation (12) of a counter-roller (8) may e.g. in the manner described above and shown in Figure 5 of the perforation (10) of the

Embossing body (7) correspond. The openings of the perforation (12 ') of the downstream in the web running direction counter roll (8 ') are smaller than the openings of the perforation (10) of the embossing roll (7). They may correspond to the embodiment of FIG. The small openings of the perforation (12) are at the contact point (32) in each case in overlap,

preferably in centric cover, opposite to the

Openings of the perforation (10) arranged. The small

Openings and / or a nozzle (17) (not shown) each emit a sharp fluid jet, which penetrates and perforates the respectively assigned and already existing deformation of the material web (2).

FIG. 6 also shows the stationary arrangement of a diaphragm (35) instead of a nozzle (17) on the counter-roller (8). The counter rollers (8,8 ') are in Figure 6 to a

Circulating means (16) are connected and together with a preferably supplied under pressure and in

Circulation moving fluid, in particular air, supplied.

The supplied fluids can, as shown in Figure 6, similarly conditioned, in particular tempered. Alternatively, that of the counter roll (8 ') for the

Perforate supplied fluid have a higher temperature. Furthermore, in a modification to Figure 6 instead of the

Umwälzeinrichtung (16) the mating rollers (8,8 ') each have its own overpressure source (15) to be assigned. In a further modification, it is possible on a special

Dispensing fluid supply or its own overpressure source (15) for a counter-roller (8) and to generate the fluid flow (6) only with the negative pressure in the embossing roller (7). In the counter-roll (8) while ambient air is sucked through this negative pressure. To the direction and

Control of the fluid flow (6) it is useful that

Supply ambient air axially and insert the diaphragm (35) shown in FIG. In a further variation, in a hollow rotating mating roll (8, 8 ') a Fluid supply with positive pressure via a blowing device and in addition a supply of ambient air possible.

Further, it is possible to apply the arrangement of Figure 6 to other e.g. cubic shapes of embossing and counter-bodies

(7,8,8 ') with appropriate adjustment to transfer.

Here, the web (2) can also be moved discontinuously. Modifications of the shown and described

Embodiments are possible in various ways. In particular, the features of the embodiments and their modifications can be arbitrarily combined with each other, in particular also be reversed.

In the embodiments shown, the

Embossing device (4) a single embossing tool (5). Alternatively, a multiple arrangement of stamping tools

(5) be present.

The embossing body (7), in particular the embossing roller is partially covered by the web (2) or

entwined. Alternatively, a tangential orientation is possible. The embossing body (7) and possibly the counter-body (8) need not be part of the web guide (23). You can also change the contact area differently

have molded, in particular flat, body shell (9,11). They can be delivered to the web (2), in particular a flat web portion, for embossing intermittently and removed again. The web (2) can be moved discontinuously in this and in other cases. It is also possible that

To switch negative pressure source (14) and / or the overpressure source (15) and to act intermittently. Furthermore, it is possible to form the embossing device (4) as a separate and separate structural unit. You can also go further than in the shown

Embodiments of the heater (3) in

Transport direction (25) of the web (2) are distanced. The conveyor (22) is for this purpose

adjusted accordingly.

In the case of an independent arrangement of the heating device (34), the distance to the heating device (3) can just be chosen so large that no heat loss detrimental to the embossing process occurs in the material web (2). A thermal insulation can avoid or minimize heat losses of the web (2) and larger distances

enable. Between the embossing device (4) and the heating device (3) can in a modification of the

Embodiments may also be arranged further machine parts or components, which subject the web (2) of an additional treatment.

In the embodiments shown, a single web (2) passes through the heating device (3) and the embossing device (4). In a modification to this is a

Multiple arrangement of webs (2) possible.

In particular, a plurality of webs (2) separated from each other by the heating device (3) and transported to the embossing device (3) for a common

Milling process be merged. It is also possible, a stamping device (4) a plurality

Assign heating devices (3).

The web (2) has a continuous, mat-like structure in the embodiments, wherein the

Width is greater than the thickness. It may have a substantially flat and homogeneous surface on a broad side before entering the embossing device (3). The

Web (2) may alternatively be paralleled by individual ones Strands are formed. The claimed embossing technique and possibly the heat treatment technique is suitable in appropriate adaptation for webs (2) made of a different material, such as a tape or films of metal, plastic or the like. consist.

LIST OF REFERENCE NUMBERS

1 heat treatment device

2 web, fleece

3 heating device, oven

4 embossing device, solidification device

5 embossing tool

6 fluid flow, gas flow

7 embossing body, embossing roller

8 counter-body, counter-roller

8 'counter-body, counter roll

9 carcass jacket, cylinder jacket embossing roller

10 holes

11 corpus mantle, cylinder mantle counter roller 12 holes

12 'perforation

13 drive

14 negative pressure source, suction device

15 overpressure source, blowing device

16 circulation device

17 nozzle, tuyere

18 fluid recycling

19 fluid treatment

20 cooling device

21 adjusting device

22 conveyor

23 track guide

24 conveyor belt

25 transport direction, running direction

26 housing

27 outlet

28 cooling section

29 fiber treatment plant

30 florists, card

31 fleece layer

32 contact point

33 positioning device Heating means aperture

Claims

Embossing device for a web (2) made of a textile fiber material, in particular a nonwoven nonwoven fabric, with an embossing tool (5) for embossing the web (2), characterized

e, that the embossing tool (5) embosses the web (2) with fluidic underpressure and / or fluidic overpressure.

Embossing device according to claim 1, characterized

that the embossing tool (5) embosses the material web (2) with a fluid flow (6), in particular a gas flow, and if necessary

perforated.

Embossing device according to claim 1 or 2, characterized in that the embossing tool (5) has an embossing body (7) with a perforated one

Carcass jacket (9), on which the web (2) rests.

4.) Embossing device according to claim 3, characterized

e, that the body shell (9) is smooth-walled on the outside facing the web (2).

5.) embossing device according to one of the preceding

Claims, characterized in that the embossing body (7) is designed as a rotating embossing roller with a perforated cylinder jacket (9).

Embossing device according to one of the preceding

Claims, characterized in that the embossing body (7), in particular the embossing roller partially covered or wrapped by the web (2).

7.) embossing device according to one of the preceding

Claims, characterized in that the embossing device (4) a preferably controllable vacuum source (14), in particular a

Suction device, which is fluidically connected to the preferably hollow embossing body (7).

8.) embossing device according to one of the preceding

Claims, characterized in that the embossing device (4) a preferably controllable overpressure source (15), in particular a

Blowing device, which has a fluid flow

(6), in particular gas flow, against the embossing body

(7) and the web (2) applied there.

9.) embossing device according to one of the preceding

Claims, characterized in that the negative pressure source (14), in particular a

Suction device, and the overpressure source (15), in particular a blowing device, by a

Fluid return (18) are fluidically connected to each other.

10.) Embossing device according to one of the preceding

Suction device, and the overpressure source (15), in particular a blowing device, to a

Circulating means (16) are connected.

11.) embossing device according to one of the preceding

Claims, characterized in that the fluid flow (6), in particular gas flow, a lower temperature than the applied web (2).

12.) embossing device according to one of the preceding

Claims, characterized in that the embossing device (4) has a fluid preparation (19) for the supplied or circulated fluid flow (6), in particular gas flow.

13.) embossing device according to one of the preceding

Claims, characterized in that the overpressure source (15), in particular

Blowing device, with a against the embossing body (7) and the web there applied web (2) directed nozzle (17) or orifice (35) is fluidly connected.

14.) embossing device according to one of the preceding

Claims, characterized in that the embossing tool (5) has a counter-body (8) with a perforated body shell (11), which extends the embossing body (7) transversely to the material web (2).

is arranged opposite.

15.) embossing device according to one of the preceding

Claims, characterized in that the overpressure source (15), in particular

Blowing device, with the preferred hollow

Counter body (8) is fluidically connected.

16.) embossing device according to one of the preceding

Claims, characterized in that the nozzle (17) or diaphragm (35) in the counter-body (8) is preferably arranged stationary.

17.) embossing device according to one of the preceding

Claims, characterized in that the nozzle (17) or aperture (35) in the counter-body (8) on the outlet side against the perforated body shell (11) is directed and the fluid flow (6) through the perforation (12) of the counter body (8) emitted.

18.) embossing device according to one of the preceding

Claims, characterized in that the nozzle (17) in the counter-body (8) on the outlet side against the contact point (32) of embossing body (7),

Counter body (8) and web (2) is directed. 19.) embossing device according to one of the preceding

Claims, characterized in that the nozzle (17) or diaphragm (35) has a thin,

preferably hot, fluid flow (6) emits, which perforates an optionally deformed region of the web (2).

20.) embossing device according to one of the preceding

Claims, characterized in that the perforation (10,12) of the embossing body (7) and the counter body (8) matched and for the

Durchläse a fluid flow (6), in particular gas flow, are arranged in alignment.

21.) Embossing device according to one of the preceding

Claims, characterized in that the perforation (10) of the embossing body (7) and possibly the perforation (12) of the counter body (8) are arranged and configured to form a desired embossing pattern.

22.) embossing device according to one of the preceding

Claims, characterized in that the embossing body (7) and the counter-body (8) have a common or synchronized drive technology (13).

23.) Embossing device according to one of the preceding

Claims, characterized in that the embossing device (4) is provided and designed for a hot web of material (2), wherein the

Embossing tool (5) a lower temperature than the

Web (2).

Embossing device according to one of the preceding

Claims, characterized in that the embossing device (4) has a cooling device (20) for the embossing tool (5).

25.) embossing device according to one of the preceding

Claims, characterized in that the embossing device (4) has an adjusting device (21) for the delivery of the embossing tool (5) to the web (2).

26.) Embossing device according to one of the preceding

Claims, characterized in that the embossing device (4) has a conveying device (22) for the preferably continuous conveying of the material web (2). 27) heat treatment device for a web (2) made of a textile fiber material, in particular a nonwoven nonwoven fabric, with a heating device (3) and an embossing device (4) for the web

(2), characterized in that the embossing device (4) after at least one of

Claims 1 to 26 is formed, wherein the

Embossing device (4) in the transport direction (25) of the moving web (2) behind the heating device

(3) is arranged.

28.) A heat treatment device according to claim 27, characterized in that the

Embossing device (4) directly behind the

Heating device (3) is arranged.

29.) Heat treatment device according to claim 27 or

28, characterized in that the embossing device (4) is attached to the heating device (3).

30.) Heat treatment device according to claim 27, 28

or 29, characterized in that the embossing device (4) a cooling section (28) for the web (2) is connected downstream.

31) fiber treatment plant for a web (2) made of a textile fiber material, in particular a

Nonwoven nonwoven, with a pile producer,

especially a card or card, a

Nonwoven and a heat treatment device (1) for the web (2), characterized

There is no such thing as the

Heat treatment device (1) according to at least one of claims 27 to 30 is formed.

32.) A method for embossing a web (2) of a textile fiber material, in particular a nonwoven nonwoven fabric, with an embossing tool (5), characterized in that the web (2) from the embossing tool (5) with fluidic vacuum and / or fluidic Overpressure is coined.

33.) Method according to claim 32, characterized

e, that the web (2) with a fluid flow (6), in particular a

Gas flow, embossed and possibly perforated, wherein the web (2) at a contact point (32) between a Pragekorper (7) with a perforated body shell (9) and a counter-body (8) with a perforated body shell (11) is arranged.