EP2630287B1 - Procédé et dispositif de fabrication d'un non-tissé composite - Google Patents

Procédé et dispositif de fabrication d'un non-tissé composite Download PDF

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Publication number
EP2630287B1
EP2630287B1 EP11781766.8A EP11781766A EP2630287B1 EP 2630287 B1 EP2630287 B1 EP 2630287B1 EP 11781766 A EP11781766 A EP 11781766A EP 2630287 B1 EP2630287 B1 EP 2630287B1
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EP
European Patent Office
Prior art keywords
installation
woven
belt
composite
layer
Prior art date
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Not-in-force
Application number
EP11781766.8A
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German (de)
English (en)
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EP2630287A1 (fr
Inventor
Norbert KÜHL
Markus Hones
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Hi Tech Textile Holding GmbH
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Hi Tech Textile Holding GmbH
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Publication of EP2630287A1 publication Critical patent/EP2630287A1/fr
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/559—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/04—Carding machines with worker and stripper or like rollers operating in association with a main cylinder
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres

Definitions

  • the invention relates to a method for producing a composite nonwoven fabric in a continuous process sequence and to an apparatus for carrying out the method.
  • the US 5,806,154 A shows such a method in addition to device, wherein a carded and already laid in multiple layers fiber web is passed over a suction roll and here covered with a nonwoven layer of synthetic fibers, which is formed by melt blowing a plurality of a polymer melt of extruded synthetic fibers. The nonwoven fibrous web is then fed to a winder.
  • EP 0 501 842 A1 and EP 0 543 863 A1 disclose similar methods and devices.
  • composite nonwovens For the production of composite nonwovens, it is generally known that the properties of the composite nonwoven fabric are essentially determined by the interaction of several different types of nonwoven layers. For example, in the case of the composite nonwovens used for noise insulation, it has been found that, in particular, the differences in the material density of the nonwoven layers cause sound waves to be compensated for and to be little reflected. Such composite nonwovens, which are used for insulation and noise reduction, have a relatively low basis weight, so that special demands are made on their production.
  • a sound absorbing thin film laminate which consists of a foam or a nonwoven fabric and associated meltblown fibers.
  • the foam or the non-woven fabric is drawn off in the form of a web from a first roll, then sprayed with a contact adhesive and dried with an infrared radiator and then combined with a second web of meltblown fibers. Both webs are then guided together by squeezing rollers and interconnected. Possibly.
  • another cover layer of a nonwoven web may be applied to the thin film laminate.
  • This nonwoven facing layer may consist of a meltblown web which is provisionally bonded by ultrasound.
  • the thin-film laminate is then cut into blanks and fed to a molding press.
  • a first nonwoven layer of microfibers is made by meltblowing, forming a second, carded nonwoven layer and then attaching it under the first layer.
  • the two layers are entangled by fluid jets and connected and then dried.
  • the second carded nonwoven layer is preferably pre-needled.
  • a third nonwoven layer can be added.
  • a meltblown microfiber layer may be directly applied and formed on a second carded layer.
  • a further object of the invention is to guide a batt produced by a carding device with the highest possible belt speed to a composite web. Further, an object of the invention is the formation of a multi-layer acoustic insulating nonwoven member.
  • a composite nonwoven fabric is formed from a batt produced by a carding device and a nonwoven layer produced by a meltblown process. During meltblowing, the fibers are produced with the lowest possible air pressure and the greatest possible distance from the batt. However, this does not produce fine fibers. Therefore, the known method and device are essentially suitable only for the production of composite webs with relatively high basis weights.
  • the claimed technique has the advantage that even very loose and lightweight laid batts can be safely combined with a nonwoven layer made by meltblowing.
  • a turbulence and change of the batt caused by the fiber flow of the meltblowing is avoided by guiding the batt into a holding zone, eg a suction zone, so that the batt on the depositing belt receives a fixation, eg generated by the suction flow.
  • the synthetic fibers produced by meltblowing are in the range the holding or suction zone deposited to a nonwoven layer directly on the batt and in this case connected with this to a compound.
  • the resulting excess blown air can also be advantageously absorbed and removed via a suction zone.
  • the nonwoven fibrous web can be led out of the suction zone and directed to a web laying device.
  • the fleece-laying device then combines several layers of the fiber pile or compound into the composite fleece.
  • the development of the invention is particularly advantageous in which the batt inside the suction zone passes through several successive suction regions with separately adjustable suction ,
  • the batt inside the suction zone passes through several successive suction regions with separately adjustable suction .
  • different pressure settings also allow the immediate deposition of the synthetic fibers to be influenced in order to create certain structures within the nonwoven layers.
  • the batt can be formed from fibers and fiber mixtures of synthetic or natural fibers.
  • the fibers or fiber mixtures are formed to form the batt with a weight fraction in the range between 10% and 100% of synthetic fibers.
  • the method variant is preferably used, in which the fiber material of the synthetic fibers and the polymer melt for extruding the synthetic fibers are formed from an identical base material. This considerably improves the recycling of such composite nonwovens.
  • the nonwoven layer on the surface of the batt is preferably laid with fine fibers to obtain the properties advantageous for the soundproofing.
  • the variant of the method is preferably used, in which the synthetic fibers are placed on the fiber web during melt blowing with a fine fiber cross section in the range of 0.2 microns to 3 microns to the nonwoven layer.
  • the composite fleece can also be produced advantageously with coarser synthetic fibers.
  • the performance of the carding device is exploited in particular with the variant of the method in which the batt is continuously guided after removal until it is deposited at a belt speed in the range from 50 m / min to 200 m / min.
  • a belt speed in the range from 50 m / min to 200 m / min.
  • essentially the capacity of the fleece-laying device is decisive for the limitation of the belt speed.
  • a further process variant is proposed in which a plurality of batts are taken parallel next to each other from the carding device and are pooled together after the meltblowing and laying down of the synthetic fibers, wherein the nonwoven layer forms an intermediate layer between the batts.
  • Such double batt layers are particularly suitable for protecting the intermediate nonwoven layer of the synthetic fibers from further treatment.
  • the structure and distribution of the synthetic fibers within the nonwoven layer remain unchanged and can thus already adjusted in the manufacturing process to the required specific properties.
  • the process variant is particularly advantageous, in which the composite nonwoven is solidified by a thermal treatment in a belt dryer, wherein the composite nonwoven is guided during solidification through a calibration zone, in which Relative to a guide band adjustable calibration belt acts on a free top of the composite web.
  • a specific thickness on the composite nonwoven it is also possible to set a specific thickness on the composite nonwoven.
  • the melting of the synthetic fibers within the nonwoven layers can be advantageously avoided such that the fiber material of the synthetic fibers has a slightly higher melting point than the synthetic fibers of the batt. This can be advantageously achieved by additives even with the same base polymer.
  • the composite nonwoven in a storage device to a winding or alternatively to is stored in a stack.
  • the storage device additionally has a cutting device in order to cut each of the composite nonwoven into individual nonwoven pieces, which are then stacked on top of each other.
  • the device according to the invention preferably has a carding device, a pickup device, a transport device and a web laying device, wherein a station for producing a nonwoven layer made of synthetic fibers is provided between the pickup device and the web laying device.
  • the station is designed as a melt blowing device, which is associated with a holding, in particular suction device.
  • the suction device is preferably arranged below a storage belt of the transport device, so that the guided on the storage belt batt is held fixed on a suction effect on the storage belt.
  • the suction device for the suction of the storage belt is formed according to an advantageous development of the device according to the invention by a plurality of suction chambers, which are connected to a vacuum source, the suction chambers are assigned to set an individual negative pressure separate control means.
  • the suction chambers are assigned to set an individual negative pressure separate control means.
  • the development of the device according to the invention is preferably used, in which the melt blowing device has a movable spinning head, which between a Operating position above the storage belt and a rest position laterally next to the storage belt is feasible.
  • the melt blowing device has a movable spinning head, which between a Operating position above the storage belt and a rest position laterally next to the storage belt is feasible.
  • the device according to the invention is specially developed in such a way that the pickup device has two separate pickup locations, which cooperate with two band arrangements of the transport device for receiving and removing a plurality of bobbins.
  • the variant of the device is used in which one of the band arrangements cooperates with the depositing belt and the second belt arrangement is arranged with a transport section parallel to the depositing belt above the spinning head.
  • the second band arrangement has a second depositing band and that the second depositing band is assigned a second spinner head of the melt blowing device.
  • the second band arrangement has a second depositing band and that the second depositing band is assigned a second spinner head of the melt blowing device.
  • the further treatment of the composite web takes place within the device by means of a conveyor belt device which connects the web laying device with a solidification device and a storage device.
  • the composite fleece can thus be stored to form a roll or stack.
  • the device has a belt dryer with a guide belt and a calibration belt arranged above the guide belt, wherein the calibration belt is designed to be height-adjustable relative to the guide belt.
  • the calibration belt is designed to be height-adjustable relative to the guide belt.
  • the invention relates to a method and an apparatus for producing a composite nonwoven fabric (36) and to a sound-absorbing nonwoven element produced therefrom.
  • FIGS. 1 and 2 a first embodiment of the device according to the invention for carrying out the method according to the invention is shown.
  • FIG. 1 a partial view of the front half of the machine and in FIG. 2 a partial view of the rear half of the machine shown.
  • the device according to the invention has in the front half of the machine according to FIG. 1 a carding device (1).
  • the carding device (1) cooperates at one end with a feed device (2) and at the opposite end with a pickup device (7).
  • a pre-drum (4) and a main drum (5) are arranged, on whose circumference a plurality of carding elements (6) act.
  • a plurality of feed system (3) are provided for receiving a fiber stream continuously provided by the feed device (2) and leading to the pre-drum (4).
  • the fibers are carded and removed via the in the main drum (5) associated with the pickup device (7) as a batt.
  • the pickup device (7) is formed in this embodiment by a picking roller system (8) which interacts directly with a conveyor belt (10.1) of a transport device (9).
  • the transport device (9) is formed in this embodiment by a first conveyor belt (10.1), a storage belt (11) and a second conveyor belt (10.2), which cooperate together to continuously receive a batt (32) from the carding device (1) and evacuate.
  • the storage belt (11) is associated with a melt blowing device (12) on an upper side and a holding device (17) on an underside.
  • a nonwoven layer (35) of meltblown synthetic fibers (33) is applied to the surface of the fibrous web (32) by the meltblowing device (12), e.g. with a compressed gas stream.
  • the composite of batt (32) and nonwoven layer (35) is referred to below as compound.
  • the holding device (17) can act on the fiber web (32) and / or on a compressed gas stream of the melt blowing device (12). It can e.g. Hold the batt (32) on the storage belt (11) and stabilize it against the impinging compressed gas flow with the meltblown fibers (33). It can also act as a leader on the pressure gas flow and the fiber flow. It can e.g. the compressed gas stream after the delivery of the fibers (33) to the batt (32) derived controlled.
  • the holding device (17) may e.g. be designed as a suction device.
  • the storage belt (11) is gas-permeable and is guided over a total of three suction chambers (18.1, 18.2 and 18.3) of the suction device (17).
  • the suction chambers (18.1, 18.2 and 18.3) of the suction device (17) via separate suction lines (19.1, 19.2 and 19.3) independently of each other with a vacuum source (not shown here) and via associated control means (20.1, 20.2, 20.3) independently of each other in their suction power adjustable.
  • the melt blowing device (12) has a spinner head (13), which is coupled by a melt line (34) to an extruder (14).
  • the spinning head (13) also has a connection to a pressurized gas supply (15), eg compressed air supply, via a control valve (16) with a compressed air source (not shown here) is connected.
  • the spinner head (13) has on its underside a melt-blowing nozzle which extends substantially over the entire width of the depositing belt (11).
  • the width of the melt-blowing nozzle of the spinning head (13) is identical to the working width of the carding device (1).
  • the working widths of the carding device (1) may be in the range of 2 m to 4 m and above. Accordingly, the width of the meltblowing die is also in the range of 2 m to 4 m.
  • the spinning head (13) and the extruder (14) are held in this embodiment on a movable support (21) through which the spinner head (13) between an operating position and a rest position is guided back and forth.
  • a cross section of the melt blowing device (12) is shown in FIG Figure 3.1 in the operating position and in Figure 3.2 shown in the rest position. In so far, in addition to the Figures 3.1 and 3.2 Referenced.
  • the spinning head (13) of the melt blowing device (12) is located directly above the depositing belt (11), which is sucked on its underside by the suction chamber (18.2).
  • the suction chamber (18.2) is connected via the suction line (19.2) and a control means (20.2) with a vacuum source, not shown here.
  • the carrier (21) of the spinning head (13) and the extruder (14) is designed to be movable and can be moved back and forth, for example via a rail system or a roller system transversely to the storage belt (11). In this case, the connections to the spinning head (13) remain unchanged. Thus, the spinning head (13) via the melt line (34) to the extruder (14).
  • a connection to a pressure source is provided via the compressed air supply (15) and the control valve (16).
  • the carrier (21) can be moved so that the spinning head (13) is obtained in a rest position laterally next to the storage belt (11). In this position, maintenance work and piecing processes can be carried out at the start of the process without a fiber web (32) being guided on the depositing belt (11).
  • a nonwoven laying device (22) is arranged next to the melt blowing device (12), wherein between the melt blowing device (12) and the nonwoven laying device (22) the conveyor belt (10.2) of the transport device (9) is held.
  • the fleece laying device (22) has depositing means (not shown here) in order to apply the fleece (32) or compound in continuous and, for example, uniform reciprocating motion over the conveyor belt (10.2) to a conveyor belt of a conveyor belt device (23) in multiple layers and with a selectable one Deposit layer number and form a composite fleece (36).
  • the basis weight of the multilayer composite nonwoven fabric (36) can be controlled or regulated as required and continuously or locally changed in the transverse and / or longitudinal direction (so-called profiling).
  • the conveyor belt device (23) is accordingly operated at a lower belt speed depending on the number of layers and on the delivery width.
  • the conveying direction of the conveyor belt device (23) is thus aligned transversely to the transport direction of the transport device (9).
  • the following devices of the device according to the invention form a second machine longitudinal side on which the devices are arranged one behind the other for further treatment of a composite nonwoven fabric.
  • the solidification device (24) is formed by a belt dryer (25) which has a guide belt (26) and a calibration belt (27) arranged above the guide belt in a calibration zone.
  • the calibration belt (27) is designed to be height-adjustable relative to the position of the guide belt (26) so that a composite web (36) guided on the guide belt (26) can be solidified with a specific material thickness.
  • the solidification takes place here via a heat treatment and is referred to in the art as thermobonding. In this case, a stable cohesion of all fibers is produced by melting the fiber material of some fibers within the composite web.
  • the multilayer composite nonwoven fabric (36) laid by the nonwoven laying device (22) is continuously fed to the solidification device (24) by the conveyor belt device (23).
  • the storage device (28) On the outlet side of the solidification device (24), the storage device (28) is provided, which is formed in this embodiment by a winding station (29).
  • the winding station (29) generates a nonwoven roll (30) from the continuously supplied composite nonwoven (36).
  • FIG. 1 and 2 illustrated device of the invention is particularly suitable to carry out the process for producing a composite nonwoven fabric (36), which is used as insulating or Dämmmaterial.
  • composite nonwovens usually have a relatively low basis weight and a relatively loose structure contained within the composite nonwoven Fibers.
  • a continuous fiber stream of fibers or fiber mixtures of the carding device (1) abandoned.
  • the fibers (31) are fed via the feed device (2) and carded within the carding device (1) via one or more drum systems and removed as a batt (32).
  • the batt (32) is taken up by the transport device (9) and continuously discharged.
  • the conveyor belts (10.1) and (10.2) of the transport device (9) are operated at a belt speed in the range of 50 m / min to 200 m / min.
  • the belt speed is determined by the carding device (1) or the fleece laying device (22).
  • the batt (32) is transferred from the first conveyor belt (10.1) to the delivery belt (11) such that the batt (32) leads to the meltblowing device (12) in which a nonwoven layer is formed on the surface of the batt (32) (35) made of synthetic fibers (33) laid and the compound is formed.
  • the fibrous web (32) is guided on the depositing belt (11) through a holding zone, for example a suction zone.
  • the suction zone is formed in this embodiment by the three suction chambers (18.1, 18.2 and 18.3) in the suction zone, the underside of the storage belt (11), which is gas-permeable and, for example, may be a mesh belt or fabric tape, sucked.
  • a holding force is generated on the batt (32), so that in the deposition zone of the synthetic fibers (33), the structure of the batt (32) is maintained despite the air flows generated during meltblowing.
  • meltblowing a polymer melt is melted via an extruder (14) and fed to a spinning head (13).
  • a meltblowing die On the underside of the spinning head (13) there is provided a meltblowing die through which a plurality of synthetic fibers (33) are extruded and fed through a pressurized gas also supplied in the spinning head (13), e.g. Compressed air, withdrawn and blown in the direction of the storage belt (11).
  • the melt-blowing nozzle, the melt throughput and the compressed air setting are hereby preferably chosen such that relatively fine synthetic fibers (33) are produced.
  • the synthetic fibers (33) preferably have a fine fiber cross section in the range of 0.5 ⁇ m to 3 ⁇ m to form the nonwoven layer (35) on the surface of the batt (32).
  • the synthetic fibers (33) are preferably deposited on the fibrous web (32) in the middle region of the suction zone, so that the separately adjustable suction capacities of the suction chambers (18.1 to 18.3) in an inlet region, in an abutment region and in an outlet region of the fibrous web (32).
  • the separately adjustable suction capacities of the suction chambers (18.1 to 18.3) in an inlet region, in an abutment region and in an outlet region of the fibrous web (32).
  • a sufficient holding force can be generated on the fiber web (32) when the fibrous web (32) enters.
  • the deposits of the synthetic fibers (33) can be influenced by different suction powers.
  • the blown air generated by melt blowing can be incorporated into the deposition process of the synthetic fibers by the suction chamber ambient air. This allows additional effects and structures to be produced in the nonwoven layer.
  • the batt (32) with the nonwoven layer (35), ie the compound, through the conveyor belt (10.2) of the batt (22) is supplied.
  • the fleece laying device (22) is the Fibrous web (32) with the nonwoven layer (35) laid in multiple layers to the desired composite nonwoven fabric (36).
  • the composite nonwoven (36) has, for example, at least two superimposed layers of the batt (32) or a plurality of double layers of the batt (32) or compounds.
  • the composite web (36) is continuously removed by the conveyor belt device (23) and fed to the solidification device (24).
  • the belt speed of the conveyor belt device (23) is dependent on the number of layers and the laying width of the fleece laying device (22).
  • the composite fleece (36) is thermally consolidated, where in particular in a calibration zone on the interaction of the guide belt (26) and the Kalibrierbandes (27), the material thickness of the composite web (36) is determined.
  • the composite nonwoven fabric (36) is wound up into the nonwoven roll (30).
  • the method and apparatus shown are used to form the batt (32) preferably 100% synthetic fibers.
  • the fiber material of the synthetic fibers and the polymer melt for extruding the synthetic fibers (33) are formed from an identical base material.
  • a base material for example, a polyester or a polypropylene would be suitable.
  • the specific properties of the fiber material of the synthetic fibers and the fiber material of the synthetic fibers (33) are matched to one another such that essentially only the synthetic fibers in the batt (32) are melted for solidification during the thermobonding.
  • the fiber material of the synthetic fibers which may also be formed as a biofibers, with a something lower melting point compared to the synthetic fibers.
  • a second carding device with a pickup device is arranged between the meltblowing device (12) and the web laying device (22) in order to produce a second web.
  • the second batt would be laid on the batt so that the batt layer is sandwiched between a lower and upper batt layer.
  • one or both batt made of a fiber blend of synthetic fibers and natural fibers.
  • at least 10% of the fibers are formed by synthetic fibers.
  • FIG. 4 a further embodiment of the device according to the invention for carrying out the method according to the invention schematically shown in a partial view.
  • the embodiment is essentially identical to the aforementioned embodiment according to FIG. 1 and 2 , so that at this point only the differences will be explained and otherwise reference is made to the above description.
  • the pickup device (7) forms two pickup points (37.1) and (37.2).
  • a picking roller system (8) is provided in each case for picking up a respective fiber web (32.1) and (32.2) and feeding it to the transport device (9).
  • the transport device (9) has in this embodiment, a lower band assembly (38.1) and an upper band assembly (38.2).
  • Under the band arrangement (38.1) is identical to the embodiment according to FIG. 1 and 2 educated.
  • the upper band arrangement (38.2) has a transport section (10.3), which is guided parallel to the depositing belt (11) above the spinning head (13).
  • the upper band arrangement (38.2) can in this case be formed in several parts by a plurality of conveyor belts or also in one piece by a circulating conveyor belt.
  • both belt assemblies (38.1) and (38.2) of the transport device (9) are brought together in such a way that the two fiber webs (32.1) and (32.2) are combined in a sandwich and between them Include nonwoven layer (35).
  • the multilayer nonwoven fabric or multilayer compound thus formed is fed to the nonwoven laying device (22) and laid down in several layers to form the composite nonwoven fabric (36).
  • the suction zone is formed in this embodiment only by a suction chamber (18) of the suction device (17).
  • the suction chamber (18) preferably extends in the longitudinal direction of the storage belt (11) such that immediately before or at the inlet of the batt (32) in the deposition zone of the meltblowing device (12) a holding force on the batt (32) by the suction of the suction chamber (18) is produced.
  • FIG. 5 a further embodiment shown schematically in a partial view, which is substantially identical to the embodiment in FIG. 4 is.
  • the band arrangements (38.1) and (38.2) are identical, so that the band arrangement (38.1) has a lower depositing band (11.1) and the band arrangement (38.2) has an upper depositing band (11.2).
  • Each of the storage belts (11.1) and (11.2) is assigned in each case a suction chamber (18.1) and (18.2) which independently of one another convey the respective storage belts (11.1) and (11.2).
  • a respective spinning head (13.1) and (13.2) of the melt blowing device (12) is arranged above the storage belts (11.1) and (11.2).
  • the spinning heads (13.1) and (13.2) are coupled together with an extruder (14).
  • each of the batt (32.1) and (32.2) each generates a nonwoven layer (35.1) and (35.2).
  • the nonwoven layers (35.1) and (35.2) can be identical or different in structure and construction.
  • the two batts (32.1) and (32.2) are brought together with the nonwoven layers (35.1) and (35.2) laid on the surfaces and fed as a multi-layer nonwoven or multi-layer compound to the nonwoven laying device (22).
  • the method shown and the apparatus shown can be expanded flexibly to produce single-layer or multi-ply batt for the production of composite nonwovens.
  • three fiber piles could simultaneously be produced by three separate pickup locations, which are combined via three conveyor belt systems to form a multi-layer nonwoven or multi-layer compound and fed to a fleece laying device.
  • two meltblowing devices could be arranged, which are associated with the conveyor belt systems, so that two of the three fiber webs are covered with a nonwoven layer of synthetic fibers prior to the joining.
  • multilayer nonwovens can advantageously be produced which contain synthetic fibers of two different polymers.
  • meltblowing devices could also be assigned one after the other to a conveyor belt system in order to deposit two nonwoven layers on a batt.
  • FIG. 1 and 2 illustrated means for producing the composite nonwoven fabric are exemplary.
  • the method according to the invention and the device according to the invention are also suitable for the production of composite tiles, in which the solidification is produced by chemical means or by mechanical means, such as needle punching.
  • the composite nonwoven fabric can also be cut into individual nonwoven pieces for storage and then stacked to form a stack.
  • the winding station could be replaced by a stacking station.
  • the holding device (17) may be formed and arranged in another way, e.g. as electrostatic or mechanical holding device which holds the batt (32) with electrostatic forces, hooks or needles or the like.
  • the storage belt (11, 11.1, 11.2) On the storage belt (11, 11.1, 11.2) and stabilized against blowing.
  • the storage belt (11, 11.1, 11.2) can in turn be gas-permeable.
  • On a suction device can be omitted in these cases.
  • a suction device may alternatively be present, but designed to be weaker.
  • the further treatment is designed as a fleece laying device (22), for example as a crosslapper, in particular as a leveler, which screens or deposits the supplied single-layer or multilayer compound on the discharge belt (23) in a zigzag shape and with shingled layer formation.
  • a fleece laying device (22) may be designed as a feeder, Camel-back-Leger or the like.
  • the single-layer or multi-layer compound can be cut before the tray in a further variation and subdivided into pieces, the pieces being laid one on top of the other and possibly aligned one above the other to form a multilayer composite nonwoven (36).
  • the fleece laying device (22) is designed for this purpose in a correspondingly modified manner.
  • the mono- or multi-layer compound is fed to a nonwoven laying device (22) as soon as it is formed.
  • an intermediate step between the compound formation and a nonwoven laying device (22) can be inserted.
  • the single-layer or multi-layered compound are taken up and temporarily stored, whereby it is supplied to a nonwoven laying device (22) or another further processing process at a later point in time.
  • said compound may e.g. stabilized and wound up in a suitable manner.
  • a multilayer composite fleece (36) with an outer and / or inner fleece layer (35, 35.1, 35.2) has particular advantages for the sound insulation.
  • the exemplary embodiments shown for multilayer or sandwich formation of the composite nonwoven (36) are particularly advantageous for this purpose.
  • a composite nonwoven fabric can also be produced in one layer in the aforementioned manner and used for insulation purposes.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Claims (15)

  1. Procédé de fabrication d'un non-tissé composite (36) par une séquence de procédé continue en plusieurs étapes :
    - l'introduction d'un courant de fibres continu constitué par des fibres ou des mélanges de fibres dans une unité de cardage (1),
    - le cardage et le peignage des fibres en au moins un voile de fibres (32),
    - l'introduction du voile de fibres (32) dans une zone de rétention et la rétention du voile de fibres (32) sur un moyen de déplacement continu dans la zone de rétention,
    - le soufflage à l'état fondu d'une pluralité de fibres synthétiques (33) extrudées à partir d'une masse fondue polymère et le dépôt des fibres synthétiques (33) en une couche de non-tissé (35) sur le voile de fibres (32) dans la zone de rétention,
    - le déchargement du voile de fibres (32) avec la couche de non-tissé (35) de la zone de rétention dans une unité de dépôt de non-tissé (22).
  2. Procédé selon la revendication 1, caractérisé en ce que le voile de fibres (32) est aspiré sur le moyen de déplacement dans une zone de rétention configurée sous la forme d'une zone d'aspiration.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le voile de fibres (32) avec la couche de non-tissé (35) est déposé dans l'unité de dépôt de non-tissé (22) en plusieurs couches pour former un non-tissé composite (36).
  4. Procédé selon la revendication 1, 2 ou 3, caractérisé en ce que les fibres ou mélanges de fibres pour la formation du voile de fibres (32) sont formées avec une proportion en poids de fibres synthétiques dans la plage comprise entre 10 % et 100 %.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau des fibres synthétiques et la masse fondue polymère pour l'extrusion des fibres synthétiques (33) sont formés en un matériau de base identique.
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les fibres synthétiques (33) sont déposées lors du soufflage à l'état fondu avec une section de fibre fine dans la plage allant de 0,2 µm à 3 µm pour former la couche de non-tissé (35) sur le voile de fibres (32).
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que plusieurs voiles de fibres (32.1, 32.2) sont peignés les uns sur les autres par l'unité de cardage (1) et déposés ensemble en sandwich après le soufflage à l'état fondu et le dépôt des fibres synthétiques (33), la couche de non-tissé (35) formant une couche intermédiaire entre les voiles de fibres (32.1, 32.2), ou en ce que plusieurs voiles de fibres (32.1, 32.2) sont déposés avec à chaque fois une couche de non-tissé (35.1, 35.2), et en ce que les voiles de fibres (32.1, 32.2) sont rassemblés avec les couches de non-tissé (35.1, 35.2) avant l'unité de dépôt de non-tissé (22) en un non-tissé multicouche (36).
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un non-tissé composite (36) déposé par une unité de dépôt de non-tissé (22) est introduit en continu dans une unité de solidification (24) et solidifié, ou introduit dans une unité de stockage (28) et stocké sous la forme d'un enroulement ou d'un empilement.
  9. Dispositif pour la fabrication d'un non-tissé composite (36), comprenant une unité de cardage (1), une unité de peignage (7), une unité de transport (9) et une unité de dépôt de non-tissé (22), une station (12) pour la formation d'une couche de non-tissé (35) étant prévue entre le dispositif de peignage (7) et l'unité de dépôt de non-tissé (22), qui est configurée sous la forme d'une unité de soufflage à l'état fondu (12), et une unité de rétention (17) pour le voile de fibres (32) étant attribuée à l'unité de soufflage à l'état fondu (12), qui est agencée sur l'unité de transport (9).
  10. Dispositif selon la revendication 9, caractérisé en ce que l'unité de rétention (17) est configurée sous la forme d'une unité d'aspiration, qui est agencée sous un moyen de déplacement (11), notamment une bande de dépôt, de l'unité de transport (9).
  11. Dispositif selon la revendication 9 ou 10, caractérisé en ce que l'unité de soufflage à l'état fondu (12) comprend une tête de filage mobile (13), qui peut être déplacée entre une position d'exploitation au-dessus du moyen de déplacement (11), notamment de la bande de dépôt, et une position de repos à côté du moyen de déplacement (11).
  12. Dispositif selon la revendication 9, 10 ou 11, caractérisé en ce que l'unité de peignage (7) comprend deux emplacements de peignage séparés (37.1, 37.2), qui interagissent avec deux agencements de bande (38.1, 38.2) de l'unité de transport (9) pour le peignage et le déchargement de plusieurs voile de fibres (32.1, 32.2).
  13. Dispositif selon l'une quelconque des revendications 9 à 12, caractérisé en ce que l'unité de dépôt de non-tissé (22) interagit avec une unité de bande de déplacement (23), une unité de solidification (24) et une unité de stockage (28), le non-tissé composite (36) déposé par l'unité de dépôt de non-tissé (22) étant introduit dans une station de stockage (29) pour former un enroulement (30) ou un empilement.
  14. Dispositif selon l'une quelconque des revendications 9 à 13, caractérisé en ce que l'unité de solidification (24) comprend un séchoir à bande (25) muni d'une bande de guidage (26) et une bande de calibrage (27) agencée au-dessus de la bande de guidage (26), et en ce que la bande de calibrage (27) est configurée sous forme ajustable en hauteur par rapport à la bande de guidage (26).
  15. Élément non-tissé absorbant les sons, caractérisé en ce que l'élément non-tissé comprend un non-tissé composite (36) et est fabriqué par un procédé selon les revendications 1 à 8.
EP11781766.8A 2010-10-21 2011-10-21 Procédé et dispositif de fabrication d'un non-tissé composite Not-in-force EP2630287B1 (fr)

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DE102010049180 2010-10-21
PCT/EP2011/068408 WO2012052535A1 (fr) 2010-10-21 2011-10-21 Procédé et dispositif de fabrication d'un non-tissé composite

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CN105780204B (zh) * 2016-05-03 2017-04-26 王宇轩 一种梳理装置
CN105887337A (zh) * 2016-06-03 2016-08-24 佛山市格菲林卫材科技有限公司 超柔疏水无纺布的生产***及生产方法
DE102016223571B4 (de) 2016-11-28 2020-08-13 Adidas Ag Herstellung von Vliesstoffen einschließlich einer Komponente
WO2020025640A1 (fr) * 2018-07-30 2020-02-06 Swm Luxembourg Sarl Appareil et procédé de fabrication de bandes fibreuses ayant une structure isotrope
DE102019104851A1 (de) * 2019-02-26 2020-08-27 Adler Pelzer Holding Gmbh Vorrichtung zur Herstellung von Nadelvliesen
DE102019104847A1 (de) * 2019-02-26 2020-08-27 Adler Pelzer Holding Gmbh Materialstruktur eines Nadelvlieses
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WO2012052535A1 (fr) 2012-04-26
EP2630287A1 (fr) 2013-08-28
CN103180501A (zh) 2013-06-26
CN103180501B (zh) 2017-06-06

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