EP4001488B1 - Dispositif de fabrication de tissus non tissés à partir de filaments continus - Google Patents

Dispositif de fabrication de tissus non tissés à partir de filaments continus Download PDF

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Publication number
EP4001488B1
EP4001488B1 EP20208671.6A EP20208671A EP4001488B1 EP 4001488 B1 EP4001488 B1 EP 4001488B1 EP 20208671 A EP20208671 A EP 20208671A EP 4001488 B1 EP4001488 B1 EP 4001488B1
Authority
EP
European Patent Office
Prior art keywords
roller
nonwoven web
nose
mesh belt
lift
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20208671.6A
Other languages
German (de)
English (en)
Other versions
EP4001488A1 (fr
EP4001488C0 (fr
Inventor
Tobias Wagner
Dirk Büttner
Alexander Klein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Original Assignee
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Reifenhaeuser GmbH and Co KG Maschinenenfabrik filed Critical Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Priority to EP20208671.6A priority Critical patent/EP4001488B1/fr
Priority to JP2021175253A priority patent/JP2022081417A/ja
Priority to KR1020210159418A priority patent/KR20220068941A/ko
Priority to CN202111374384.XA priority patent/CN114541044A/zh
Priority to US17/530,509 priority patent/US11598035B2/en
Publication of EP4001488A1 publication Critical patent/EP4001488A1/fr
Application granted granted Critical
Publication of EP4001488B1 publication Critical patent/EP4001488B1/fr
Publication of EP4001488C0 publication Critical patent/EP4001488C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D13/00—Complete machines for producing artificial threads
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/25—Driving or guiding arrangements
    • B65H2404/256—Arrangement of endless belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/261—Arrangement of belts, or belt(s) / roller(s) facing each other for forming a transport nip
    • B65H2404/2614—Means for engaging or disengaging belts into or out of contact with opposite belts, rollers or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/262—Arrangements of belts facing rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/177—Fibrous or compressible material

Definitions

  • the invention relates to a device for producing nonwovens from continuous filaments, wherein a spinning device for spinning the filaments and a cooling device for cooling the filaments are present, wherein a depositing screen belt is also provided on which the filaments can be deposited in a depositing area to form a nonwoven web, wherein the depositing screen belt can be deflected from its transport direction in a deflection area by at least one nose roller and wherein at least one follow-up device for the nonwoven web is present downstream of the depositing screen belt in the conveying direction of the nonwoven web.
  • the invention also relates to a method for transporting and treating a nonwoven web made of continuous filaments.
  • - Continuous filaments differ from staple fibers due to their practically endless length, which have significantly shorter lengths of, for example, 10 mm to 60 mm.
  • Devices and methods of the type mentioned at the beginning are basically known in different embodiments from practice and from the state of the art.
  • the filaments are spun using a spinning device, then cooled in a cooling device and finally deposited on a depositing screen belt to form the nonwoven web.
  • WO 00/46434 A1 describes a device and a method for producing nonwovens, wherein the spun filaments are deposited on a deposit belt to form a nonwoven web, detached from the deposit belt by means of a lifting roller and then consolidated in a calender.
  • US$5,807,795 discloses a device and a method for producing a nonwoven fabric, wherein the filaments are spun in a spinning device and deposited on a deposit belt to form the nonwoven web. The nonwoven web is detached from the deposit belt by means of a roller arrangement.
  • EP 3 495 543 A1 describes a system and a method for producing a spunbonded nonwoven from continuous filaments, whereby the filaments are deposited on a first depositing belt to form the nonwoven web and are then transferred to a second depositing belt.
  • the nonwoven web is guided by the second depositing belt around a suction drum arranged above the second depositing belt and is thus detached from the depositing belt.
  • US 2007/0271749 A1 relates to a device for producing nonwovens, whereby filaments are spun in a spinning device and deposited on a deposit belt to form a nonwoven web. It is possible for the nonwoven web to be guided over a drum arranged above the deposit belt.
  • the depositing screen belt of the devices known from practice is usually designed as an endlessly rotating depositing screen belt that is deflected from its transport direction in a deflection area by a nose roller. In this deflection area arranged at the end of the depositing screen belt, the nonwoven web is transferred from the depositing screen belt or from the nose roller to a subsequent device and is detached from the depositing screen belt in the deflection area.
  • detaching the nonwoven web from the depositing screen belt requires a relatively high level of force and is therefore not always easy or reliable.
  • a sufficiently good adhesion of the nonwoven web to the depositing screen belt is generally desirable, at least in the depositing area, so that there is a conflict of objectives between good detachment behavior and sufficient adhesion to the depositing screen belt.
  • the strong deflection of the depositing screen belt can lead to jamming or trapping of the continuous filaments in the depositing screen belt, particularly in the deflection area.
  • the A great deal of force is required to detach the fleece web from the depositing screen belt, and the fleece web can be damaged by filaments being torn out.
  • filament residues can remain on the depositing screen belt, which are torn out of the fleece web during the detachment process. - There is a need for improvement in this regard.
  • the invention is based on the technical problem of specifying a device of the type mentioned at the beginning with which the nonwoven web can be detached from the depositing screen belt in a simple and functionally reliable manner, with which in particular damage to the nonwoven web can be avoided during the detachment process and the amount of force required to detach the nonwoven web from the depositing screen belt can be reduced.
  • the invention is also based on the technical problem of specifying a corresponding method for transporting and treating a nonwoven web.
  • the invention teaches a device for producing nonwovens from continuous filaments, wherein a spinning device for spinning the filaments and a cooling device for cooling the filaments are present, wherein a depositing screen belt is also provided on which the filaments can be deposited in a depositing area to form a nonwoven web, wherein the depositing screen belt can be deflected from its transport direction in a deflection area by at least one nose roller, wherein at least one follow-up device for the nonwoven web is provided downstream of the depositing screen belt in the conveying direction of the nonwoven web, wherein the nonwoven web can be detached from the depositing screen belt before the deflection area and then transferred to the follow-up device, wherein at least one lifting roller is provided for detaching the nonwoven web from the depositing screen belt, wherein the lifting roller is arranged or is arranged above the depositing screen belt can be detached from the depositing screen belt by means of the at least one lifting roller in a detachment area which is arranged at a distance A from
  • the spinning device according to the invention is designed in particular as a spinnerette within the scope of the invention.
  • the transport direction of the depositing screen belt means in particular the direction in which the depositing screen belt or the endlessly rotating depositing screen belt moves to convey the nonwoven web.
  • the transport direction of the depositing screen belt means in particular the deflection area at the end of the depositing screen belt in which the depositing screen belt is deflected from its transport direction by the nose roller and thus leaves its transport direction.
  • the detachment area or detachment area of the nonwoven web means in particular the area in which the nonwoven web is detached from the depositing screen belt.
  • the detachment area is a detachment line which extends in particular transversely, preferably perpendicularly to the transport direction of the depositing screen belt.
  • the detachment area or detachment line is preferably arranged in the transport direction of the depositing screen belt in front of the deflection area and/or in front of the nose roller.
  • the distance A is measured in particular between a projection of the axis of rotation of the nose roller onto the depositing screen belt and the detachment area or the detachment line, whereby the projection of the axis of rotation is perpendicular to the longitudinal extension of the depositing screen belt in the area of the distance A.
  • the deposit area refers expediently to the area of the deposit screen belt in which the spun filaments are deposited to form the nonwoven web.
  • the device according to the invention is a spunbond device, wherein a stretching device is provided for stretching the filaments.
  • a stretching device is provided for stretching the filaments.
  • Another embodiment of the invention is characterized in that the device according to the invention is a meltblown device.
  • spunbond nonwovens or nonwoven webs are produced with the device according to the invention.
  • monocomponent filaments and/or multicomponent filaments or bicomponent filaments are produced as continuous filaments.
  • the multicomponent filaments or bicomponent filaments can be, for example, continuous filaments with a core-shell configuration or continuous filaments with a side-by-side configuration.
  • the multicomponent filaments or bicomponent filaments can have a tendency to curl.
  • the continuous filaments produced with the device according to the invention or with the method according to the invention consist of at least one thermoplastic material, in particular of at least one polyolefin, preferably of polypropylene and/or polyethylene.
  • the at least one thermoplastic material is a polyester or copolyester, in particular polyethylene terephthalate and/or a polyethylene terephthalate copolymer.
  • a cooling device for cooling the filaments.
  • the cooling device preferably has a cooling chamber through which the continuous filaments are guided for cooling. It is preferred that air supply cabins for supplying cooling air are arranged on two opposite sides of the cooling chamber. According to a preferred embodiment, air supply cabins arranged one above the other are present on two opposite sides of the cooling chamber, in particular two air supply cabins arranged one above the other, from which air of different temperatures is preferably introduced into the cooling chamber. It has proven useful to provide a monomer extraction device between the spinning device and the cooling device, with which disruptive gases that occur during the spinning process can be removed from the device or the spunbond device. The disruptive gases can be monomers, oligomers and similar substances.
  • a stretching device for stretching the filaments is expediently arranged downstream of the cooling device in the direction of filament flow.
  • the unit comprising the cooling device and the stretching device is designed as a closed unit in which, apart from the supply of cooling air in the cooling device, no further air is supplied to the closed unit.
  • At least one diffuser is arranged between the stretching device and the deposition screen belt.
  • the continuous filaments emerging from the stretching device are guided through the diffuser and then deposited on the deposition screen belt, in particular deposited in the deposition area of the deposition screen belt.
  • Two diffusers connected in series are provided.
  • the depositing sieve belt or the endlessly rotating depositing sieve belt is also expediently designed to be permeable to air, so that process air can be extracted from below through the depositing sieve belt. Expediently, at least in the depositing area of the depositing sieve belt, process air is sucked through the depositing sieve belt by means of at least one extraction device, in particular from below.
  • a preferred embodiment of the invention is characterized in that the at least one lifting roller is or can be arranged in relation to the nose roller in such a way that the detachment area is located in front of the deflection area in the transport direction of the depositing screen belt. It is recommended that the at least one lifting roller is or can be arranged in front of or behind the nose roller in the transport direction of the depositing screen belt. It is within the scope of the invention that the nonwoven web can be or is guided over the top of the at least one lifting roller. It is recommended that the at least one lifting roller is designed as a non-vacuum-fed lifting roller.
  • the distance A is smaller than the distance C between the nose roller and a deflection roller.
  • deflection roller means in particular a roller which is set up in addition to the nose roller for transporting the depositing screen belt and which is arranged in front of the nose roller in the transport direction of the depositing screen belt.
  • the deflection roller is provided in particular between the depositing area and the deflection area.
  • the depositing screen belt can be guided along the deflection roller without being deflected from its transport direction.
  • the depositing screen belt deflected from its transport direction by the deflection roller, as will be explained in more detail below.
  • the at least one nose roller is arranged behind the depositing area and behind the unit comprising the spinning device and the cooling device in the transport direction of the depositing screen belt or in the conveying direction of the nonwoven web.
  • the at least one deflection roller is expediently arranged behind the depositing area or behind the unit comprising the spinning device and the cooling device in the transport direction of the depositing screen belt or in the conveying direction of the nonwoven web, but in front of the nose roller.
  • Distance C between the nose roller and the deflection roller means in the context of the invention in particular the distance between the axes of rotation of the nose roller and the deflection roller, which is expediently measured between the projections of the axes of rotation onto the depositing screen belt, the projections of the axes of rotation being perpendicular to the longitudinal extent of the depositing screen belt in the region of the distance C.
  • the region between the deflection roller and the nose roller represents a transfer table, the length of which is defined in particular by the distance C.
  • the transfer table essentially has the function of transferring the nonwoven web from the depositing screen belt to the subsequent device.
  • the distance A is a maximum of 50%, preferably a maximum of 25%, preferably a maximum of 10%, particularly preferably a maximum of 5%, very particularly preferably a maximum of 2.5%, for example 1% of the distance C.
  • the distance A is at least 25% of the diameter n of the nose roller, preferably at least 50%, preferably at least 75%, particularly preferably at least 100% and very particularly preferably at least 125% of the diameter n of the nose roller.
  • the distance A is further preferably between 10% and 500%, particularly preferably between 25% and 400%, most preferably between 50% and 350% of the diameter n of the nose roller.
  • the at least one lifting roller is height-adjustable in relation to the depositing screen belt and can preferably be moved in a vertical direction for this purpose. It is recommended that the at least one lifting roller can be moved from a basic position to various lifting positions and back due to its height adjustability or vertical mobility. In the basic position of the at least one lifting roller, for example, cleaning work can be carried out on the device or the nonwoven web can be threaded. The device is then not in its operating state or in its operating position. In the lifting position, the at least one lifting roller is expediently arranged in relation to the nose roller in such a way that the distance A between the detachment area or the detachment line of the nonwoven web and the nose roller results in the operating state of the device.
  • a preferred embodiment of the invention is characterized in that the at least one lifting roller is designed as a rotating lifting roller, in particular as a drivable rotating lifting roller.
  • the at least one lifting roller is designed as a simple round profile that is not rotating and not drivable. Such a round profile has a longitudinal axis instead of an axis of rotation.
  • the at least one lifting roller is designed as a rotating lifting roller.
  • a further preferred embodiment of the device according to the invention is characterized in that the at least one lifting roller is arranged at a distance D from the depositing screen belt or can be arranged can, wherein this distance D is expediently greater than 50% of the diameter d of the lifting roller and preferably at least 55%, particularly preferably at least 60% of the diameter d of the lifting roller.
  • distance D means in particular the distance of the axis of rotation of the at least one lifting roller to the depositing screen belt, wherein this distance D is expediently measured perpendicular to the longitudinal extension of the depositing screen belt in the region of the at least one lifting roller or to the imaginary extension of this longitudinal extension.
  • the diameter d of the at least one lifting roller is 10 to 500 mm, preferably 25 to 400 mm, preferably 50 to 300 mm, particularly preferably 100 to 250 mm.
  • the diameter d of the at least one lifting roller is expediently smaller than 8 times the diameter n of the nose roller.
  • An embodiment which is of particular importance within the scope of the invention is characterized in that at least two, in particular two lifting rollers are provided, wherein a second lifting roller is preferably arranged or can be arranged in front of the nose roller in the transport direction of the depositing screen belt and wherein a first or the first lifting roller is preferably arranged or can be arranged in the transport direction of the depositing screen belt between the second lifting roller and the nose roller or behind the nose roller.
  • the at least two, in particular the two lifting rollers are designed as rotating lifting rollers.
  • the at least two, in particular the two lifting rollers are designed as drivable rotating lifting rollers.
  • the first lifting roller and the second lifting roller have the same diameter d or essentially the same diameter d.
  • the first and second lifting rollers it is also possible for the first and second lifting rollers to have different diameters d 1 and d 2.
  • the diameters d 1 and d 2 are then expediently between 10 and 500 mm, preferably between 25 and 400 mm, more preferably between 50 and 300 mm, particularly preferably between 100 and 250 mm.
  • the distance between the axes of rotation m of the two lifting rollers is preferably at least 105%, preferably at least 110%, particularly preferably at least 115% of the diameter d of the lifting rollers. If the two lifting rollers have different diameters d 1 or d 2 , these details refer to the diameter of the lifting roller with the larger diameter.
  • the rotation axis distance m is expediently measured between the projections of the rotation axes of the lifting rollers onto the depositing screen belt, with the projections of the rotation axes being perpendicular to the longitudinal extension of the depositing screen belt in the area of the lifting rollers.
  • the rotation axis distance m of the two lifting rollers is less than 300%, preferably less than 250%, particularly preferably less than 200% of the diameter d of the lifting rollers. If the lifting rollers have a different diameter, these details refer to the diameter of the lifting roller with the larger diameter.
  • the two lifting rollers are or can be arranged at a distance D or D 1 and D 2 from the depositing screen belt, and wherein this distance D 1 and/or D 2 is preferably greater than 50% of the respective diameter d 1 or d 2 of the lifting roller, particularly preferably at least 55% and very particularly preferably at least 60% of the respective diameter d 1 or d 2 of the lifting roller.
  • the at least two, in particular the two lifting rollers are arranged with the same distance D or essentially with the same distance D in relation to the depositing screen belt.
  • the distance between the respective axis of rotation of the lifting roller and the depositing screen belt is then the same or essentially the same.
  • the lifting rollers are arranged at a different distance D 1 and D 2 from the depositing screen belt, wherein the distance D 1 of the first lifting roller from the depositing screen belt is then preferably greater than the distance D 2 of the second lifting roller from the depositing screen belt.
  • the nonwoven web can be guided over the top of the at least one lifting roller. If, according to a preferred embodiment of the device according to the invention, at least two lifting rollers, in particular two lifting rollers, are provided, the nonwoven web can expediently be guided over the underside of the second lifting roller and over the top of the first lifting roller. In this context, it is preferred that the second lifting roller is arranged in front of the first lifting roller in the transport direction of the depositing screen belt.
  • the nonwoven web can be guided over the underside of the second lifting roller and over the top of the first lifting roller, the first lifting roller is responsible in particular for detaching the nonwoven web from the depositing screen belt and the second lifting roller is then recommended for holding the nonwoven web down near the depositing screen belt.
  • This The embodiment is based on the knowledge that the second lifting roller, which holds down the nonwoven web, means that the detachment area is or can be arranged close to the second lifting roller and in particular in the area of the second lifting roller.
  • the distance A from the nose roller can be further limited so that it is in particular a maximum of 25%, preferably a maximum of 10%, preferably a maximum of 5%, particularly preferably a maximum of 2.5% of the distance C, very particularly preferably a maximum of 1%, for example 0.1% of the distance C.
  • the use of two lifting rollers, with a first lifting roller being provided for the detachment process and a second lifting roller being provided for holding it down, is also based on the knowledge that the detachment area or the detachment line can be defined very reliably by the second lifting roller.
  • the distance D 2 of the second lifting roller from the depositing screen belt has a significant influence on the distance A of the detachment area or the detachment line from the nose roller.
  • the ratio of the distance D 1 of the first lifting roller to the depositing screen belt to the distance D 2 of the second lifting roller to the depositing screen belt (D 1 /D 2 ) preferably influences the position of the detachment area or the detachment line in such a way that, with a larger wrap angle of the nonwoven web around the second lifting roller, the detachment area or the detachment line is arranged closer to an intersection point of a straight line running perpendicular to the depositing screen belt and passing through the center of the second lifting roller. It is within the scope of the invention that the detachment area or the detachment line is located in the area of the second lifting roller and in particular below the second lifting roller.
  • both lifting rollers are arranged in relation to the depositing screen belt are height-adjustable and can preferably be moved in a vertical direction for this purpose. It is possible for both lifting rollers to be able to be moved from a basic position to a lifting position or to various lifting positions and back. In the basic position, it is recommended that the device according to the invention can be cleaned and/or the fleece web can be threaded. When the device is in operation, the lifting rollers are expediently arranged in their lifting positions.
  • the device can also be operated with the lifting rollers in the basic position if it is not necessary to remove the fleece web using the lifting rollers. It is recommended that the first lifting roller is arranged in its basic position below the depositing screen belt and/or that the second lifting roller is arranged in its basic position above the depositing screen belt. In principle, however, both lifting rollers can also be arranged above or below the depositing screen belt in their basic position.
  • the depositing sieve belt or the transfer table is arranged parallel or essentially parallel to the device base or the ground when the device is in operation.
  • the nose roller can be moved or lowered in the vertical direction. It is recommended that the nose roller can be moved or lowered in the vertical direction in such a way that the depositing sieve belt is oriented towards the device base at least between the deflection roller and the nose roller in the transport direction and preferably has a gradient of greater than 0° to 20°, in particular from 3° to 20°, preferably from 4° to 18°, particularly preferably from 5° to 16°.
  • the depositing sieve belt has a gradient in the direction of the device base
  • the depositing sieve belt is expediently moved by the deflection roller from its - previously in particular parallel to the device base - transport direction.
  • the ability of the nose roller to move in the vertical direction means in particular the ability of the nose roller to move in the direction of the device base and back.
  • a further preferred embodiment of the device according to the invention is characterized in that the nose roller can be moved or telescoped in a horizontal direction.
  • horizontal direction means in particular in a direction parallel to the device base. Due to the horizontal moveability or telescoping of the nose roller, the nose roller can thus be moved closer to the following device, for example.
  • the distance C between the nose roller and the deflection roller is expediently increased when moving or telescoping and reduced when the nose roller is retracted.
  • the nose roller can be moved or telescoped in a horizontal direction and can be moved or lowered in a vertical direction. This embodiment is based on the knowledge that the nose roller can be set to a wide variety of positions.
  • a deposit screen belt oriented towards the device base can be realized and at the same time the nose roller can be moved close to the following device.
  • horizontal movability or telescoping also expediently means the movability or telescoping of the nose roller in the transport direction of the deposit screen belt, i.e. in accordance with the set gradient of the deposit screen belt or the transfer table between the deflection roller and the nose roller.
  • the nose roller can be moved or telescoped in the horizontal direction and lowered or moved in the vertical direction and, in addition, the lifting roller or the lifting rollers can be moved in the vertical direction, different positions of the nose roller can be set and the lifting rollers can be arranged in their lifting positions in such a way that the above-described distances between the rollers and between the detachment area A and the nose roller are achieved. These distances and positions therefore relate to the operating state of the device.
  • the distance A of the detachment area from the nose roller can be adjusted (also) by the vertical mobility and/or the horizontal mobility or telescoping of the nose roller.
  • the nose roller can only be moved or telescoped in the horizontal direction and not moved or lowered in the vertical direction.
  • the depositing sieve belt is arranged parallel or substantially parallel to the device base or the ground and the nose roller can be moved or telescoped in the horizontal direction.
  • the nose roller can neither be moved or lowered in the vertical direction nor moved or telescoped in the horizontal direction, so that there is a rigid depositing sieve belt that is arranged parallel or substantially parallel to the device base or the ground.
  • the distance A between the detachment area or the detachment line and the nose roller is smaller than the distance E between the nose roller and the deposit area of the deposit screen belt.
  • the distance E is measured in the context of the invention in particular between a projection of the axis of rotation of the nose roller onto the deposit screen belt and the deposit area, in particular the middle of the deposit area, wherein the projection of the axis of rotation of the nose roller is perpendicular to the longitudinal extent of the deposit screen belt in the region of the distance E.
  • the distance A is a maximum of 50%, preferably a maximum of 25%, preferably a maximum of 10%, particularly preferably a maximum of 5%, very particularly preferably a maximum of 2.5%, for example 1% of the distance E.
  • the distance E expediently refers to a state of the device in which the deposit screen belt is arranged parallel or essentially parallel to the device base or to the ground and in particular to an embodiment in which the device does not have a deflection roller and/or in which the nose roller cannot be moved or lowered in the vertical direction and/or cannot be moved or telescoped in the horizontal direction.
  • the downstream device is a consolidation device, in particular a hot-air bonder, for example an oven, and/or a calender and/or that the downstream device is a winder.
  • the device it is possible for the device to have at least two downstream devices, for example a consolidation device, in particular a calender and a winder.
  • the consolidation device or calender is then expediently arranged first in the conveying direction of the nonwoven web and the winder is provided behind the consolidation device or calender.
  • the consolidation device or calender serves in particular for the consolidation or final consolidation of the Nonwoven web. After the detachment process, the nonwoven web is conveniently transferred to the bonding device or calender in the detachment area.
  • the consolidation device or the calender has at least one calender roller, in particular at least one pair of calender rollers, with at least one calender roller preferably being movable in the vertical direction.
  • the nonwoven web is guided in particular through the gap or nip between the at least two - preferably arranged one above the other - calender rollers of the at least one pair of calender rollers.
  • the nonwoven web can either be guided in such a way that it does not touch any of the calender rollers, since the calender or the at least one pair of calender rollers is open, or it can be guided in such a way that it only touches one of the calender rollers in order to influence the properties of the corresponding side of the nonwoven web, or it can be guided in such a way that it touches both calender rollers, since the calender or the at least one pair of calender rollers is closed. It is also within the scope of the invention that the nonwoven web is consolidated as it passes between the two calender rollers - in particular by thermal bonding.
  • At least three calender rolls are provided for the consolidation device or for the calender, whereby preferably at least one calender roll is movable in the vertical direction and whereby the at least three calender rolls are particularly preferably arranged one above the other.
  • This arrangement results in two calender roll pairs each consisting of the uppermost calender roll and the middle calender roll and of the lowermost calender roll and the middle calender roll.
  • the nonwoven web is expediently guided through one of the resulting gaps for consolidation or final consolidation.
  • the position of the nose roll and/or the lifting rolls is dependent on the The operating mode of the calender is adjustable or is set.
  • the consolidation device or the calender is recommended to have at least one consolidation area in which the nonwoven web is consolidated or finally consolidated.
  • consolidation area means the area in which the nonwoven web is consolidated or finally consolidated or otherwise treated by interaction or contact with at least one calender roller. It is recommended that the consolidation area of the consolidation device or the calender is arranged above the nose roller and/or above the deposit screen belt. The arrangement of the consolidation area relates to the operating position or the operating state of the device.
  • the calender is a consolidation calender and/or a coating calender and/or a calibration calender and/or a laminating calender and/or an activation calender.
  • the device expediently has a pre-consolidation device, which is preferably arranged in the transport direction of the depositing screen belt in front of the detachment area. It is possible that the nonwoven web is detached from the depositing screen belt before the nonwoven web is finally consolidated. In principle, however, it is also possible for the device to be set up in such a way that the nonwoven web is finally consolidated before the nonwoven web is detached from the depositing screen belt.
  • Such an embodiment, in which the nonwoven web is finally consolidated before the nonwoven web is detached from the depositing screen belt, is particularly preferred if the nonwoven web is immediately subjected to a coating calender and/or a calibration calender and/or a laminating calender and/or an activation calender and/or a hot air bonder, for example an oven.
  • the at least one lifting roller and/or the second lifting roller has a distance U from the nose roller that is at least 50% of the diameter of the respective lifting roller.
  • the distance U is expediently measured between the projections of the axes of rotation of the lifting roller and the nose roller onto the depositing screen belt, wherein the projections of the axes of rotation are perpendicular to the longitudinal extension of the depositing screen belt or to the imaginary extension of this longitudinal extension in the region of the distance U.
  • both lifting rollers preferably have a distance U 1 and U 2 from the nose roller that is at least 50% of the diameter of the respective lifting roller.
  • the invention further teaches a method for transporting and treating a nonwoven web made of continuous filaments, in particular with a device described above, wherein the nonwoven web is guided over a depositing screen belt that can be deflected from its transport direction in a deflection area by a nose roller, wherein the nonwoven web is transferred to a downstream device, wherein the nonwoven web is detached from the depositing screen belt before the deflection area.
  • the method according to the invention is characterized in that the nonwoven web is guided over at least one lifting roller for detachment from the depositing screen belt, which is arranged above the depositing screen belt, wherein the at least one lifting roller is height-adjustable in relation to the depositing screen belt and is preferably movable in the vertical direction for this purpose, wherein the nonwoven web is detached from the depositing screen belt by means of the at least one lifting roller in a detachment region which is arranged at a distance A from the nose roller and wherein the nonwoven web is subsequently fed to the subsequent device.
  • the nonwoven web is subsequently wound and/or coated and/or calibrated and/or activated and/or consolidated in the subsequent device(s).
  • the invention is based on the finding that the device according to the invention enables the nonwoven web to be detached from the depositing screen belt in a functionally reliable and simple manner and that, in particular, the amount of force required to detach the nonwoven web can be reduced compared to known measures. This is achieved by detaching the nonwoven web by means of at least one lifting roller in a detachment area that is arranged in the transport direction of the depositing screen belt in front of the deflection area.
  • the nonwoven web can be detached by the measures according to the invention in particular without damaging the nonwoven web, for example by tearing out filaments, so that no unwanted filament residues remain on the depositing screen belt. It should also be emphasized that the measures according to the invention can be implemented relatively easily and without any significant effort or cost.
  • the detachment area or the detachment line and thus the distance A from the nose roller can be set very precisely. Due to the preferred vertical mobility of the lifting roller(s) and/or the horizontal mobility or telescopicity of the nose roller and/or the vertical mobility of the nose roller, different operating states of the device can be set and in particular the distance of the nose roller to a subsequent device, for example to a calender, can be adjusted and/or a gradient of the depositing screen belt can be realized, whereby the lifting roller or the lifting rollers can nevertheless be arranged in relation to the depositing screen belt such that the detachment of the nonwoven web takes place or can take place in a detachment area or on a detachment line in front of the deflection area.
  • the device or the method according to the invention can therefore be used very flexibly, whereby in the various operating positions a simple and functionally reliable detachment of the nonwoven web from the depositing screen belt is possible, for which a relatively small amount of force is required and which can take place in particular without damaging the nonwoven web.
  • the figures show a device for producing nonwovens from continuous filaments, with a spinning device 1 designed as a spinneret for spinning the filaments and a cooling device 2 for cooling the filaments.
  • a depositing screen belt 3 is also provided, on which the filaments can be deposited in a depositing area 4 to form the nonwoven web 5.
  • the device is a spunbond device, with a stretching device 17 being provided for stretching the filaments.
  • the continuous filaments can expediently be monocomponent filaments made of at least one thermoplastic.
  • the cooling device 2 has, as recommended and in the exemplary embodiment, a cooling chamber 18 through which the continuous filaments are guided for cooling.
  • two air supply cabins 19, 20 arranged one above the other are arranged on two opposite sides of the cooling chamber 18, from which air of different temperatures is preferably introduced into the cooling chamber 18.
  • a monomer extraction device 21 is provided between the spinning device 1 and the cooling device 2, with which interfering gases that occur during the spinning process can be removed from the device or the spunbond device.
  • the interfering gases can be monomers, oligomers and similar substances.
  • the stretching device 17 for stretching the filaments is arranged downstream of the cooling device 2 in the filament flow direction FS.
  • the unit comprising the cooling device 2 and the stretching device 17 is designed as a closed unit in which, apart from the supply of cooling air in the cooling device 2, no further air is supplied to the closed unit.
  • a diffuser 23 through which the continuous filaments are guided is arranged between the stretching device 17 and the depositing screen belt 3.
  • secondary air inlet gaps 24 for the introduction of secondary air into the diffuser 23 are provided between the stretching device 17 and the diffuser 23.
  • the continuous filaments are deposited on the depositing screen belt 3 in the depositing area 4 to form the nonwoven web 5 and are then expediently transported away with the depositing screen belt 3 in the transport direction T of the depositing screen belt 3.
  • a suction device 22 is provided under the depositing screen belt 3 for sucking air or process air through the depositing screen belt 3.
  • the depositing screen belt 3 can be deflected from its transport direction T in a deflection area 6 by at least one nose roller 7.
  • the fleece web 5 is in the operating state of the device ( Figures 2 to 4 ) can be detached from the depositing screen belt 3 before the deflection area 6 and then transferred to at least one subsequent device 8.
  • two subsequent devices 8, a calender 16 and a winder 26 are provided.
  • two lifting rollers 9, 14 are preferably provided in the embodiment according to the figures. It is recommended and in the embodiment the lifting rollers 9, 14 are designed to be height-adjustable in relation to the depositing screen belt 3 and preferably and in the embodiment they are movable in the vertical direction. This is particularly the case in the Fig.1
  • the lifting rollers 9, 14 can be conveniently adjusted in height or moved vertically from a basic position to various lifting positions and back. In a basic position of the lifting rollers 9, 14, which are in the Fig.1 As shown, cleaning of the device according to the invention and/or threading of the fleece web is possible, so that the device is not yet in its operating state.
  • FIG. 2 and 3 Two different lifting positions of the lifting rollers 9, 14 are shown in the Figures 2 and 3 These figures show the device in the operating state.
  • the lifting rollers 9, 14 are expediently arranged above the depositing screen belt 3 and the fleece web 5 can be detached from the depositing screen belt 3 by means of the lifting rollers 9, 14 in a detachment area 10 or on a detachment line, which is arranged at a distance A from the nose roller 7 and is arranged in particular in front of the nose roller 7 in the transport direction T.
  • Distance A between the nose roller 7 and the detachment area 10 or the detachment line means in particular the distance between the axis of rotation of the nose roller 7 and the detachment area or the detachment line 10.
  • the distance A is expediently measured between a projection of the axis of rotation of the nose roller 7 onto the depositing screen belt 3 and the detachment area 10 or the detachment line, whereby the projection of the axis of rotation is perpendicular to the longitudinal extension of the depositing screen belt 3 in the area of the distance A ( Figures 2 to 4 ).
  • the first lifting roller 9 is arranged in the transport direction T of the depositing screen belt 3 behind the nose roller 7 ( Fig.2 ) or arranged in front of the nose roller 7 ( Fig.3 ).
  • the second lifting roller 14 is preferably arranged in front of the nose roller 7 in the transport direction T of the depositing screen belt 3.
  • the distance A is smaller than the distance C between the nose roller 7 and a deflection roller 15.
  • the deflection roller 15 is expediently a roller set up in addition to the nose roller 7 for transporting the depositing screen belt 3, which is arranged in front of the nose roller 7 in the transport direction T of the depositing screen belt 3.
  • the deflection roller 15 is recommended and in the exemplary embodiment provided between the depositing area 4 and the deflection area 6.
  • the depositing screen belt 3 can be guided along the deflection roller 15 either without deflection from its transport direction ( Fig.1 ) or be deflected from its transport direction by the deflection roller 15 ( Figures 2 and 3 ), as explained in more detail below.
  • Distance C between the nose roller 7 and the deflection roller 15 means in the context of the invention in particular the distance between the axes of rotation of the nose roller 7 and the deflection roller 15, which is expediently measured between the projections of the axes of rotation onto the depositing screen belt 3, whereby the projections of the axes of rotation are perpendicular to the longitudinal extension of the depositing screen belt 3 in the area of the distance C. It is recommended that the distance A is a maximum of 30%, preferably a maximum of 20% of the distance C. In the embodiment according to the Fig.2 the distance A may be about 5% of the distance C. In the embodiment according to the Fig.3 the distance A may be about 15% of the distance C.
  • the lifting rollers 9, 14 are designed as rotating lifting rollers.
  • the diameter d of the lifting rollers 9, 14 is preferably 25 to 400 mm, particularly preferably 100 to 250 mm.
  • the first lifting roller 9 and the second lifting roller 14 have the same diameter d or essentially the same diameter d.
  • the rotational axis distance m of the two lifting rollers 9, 14 in the operating state of the device is at least 115% of the diameter d of the lifting rollers 9, 14.
  • the rotational axis distance m of the two lifting rollers 9, 14 may be approximately 130% of the diameter d of the lifting rollers 9, 14.
  • Rotational axis distance m in this context means in particular the distance between the rotational axes of the two lifting rollers 9, 14, wherein this rotational axis distance m is expediently measured between the projections of the rotational axes of the lifting rollers 9, 14 onto the depositing screen belt 3, wherein the projections of the rotational axes are perpendicular to the longitudinal extent of the depositing screen belt 3 or to the imaginary extension of this longitudinal extent.
  • the lifting rollers 9, 14 are arranged at a distance D in relation to the depositing screen belt 3.
  • Distance D in this context means in particular the distance of the axis of rotation of the respective lifting roller 9, 14 to the depositing screen belt 3.
  • the distance D to the depositing screen belt 3 is thereby conveniently measured or determined perpendicular to the longitudinal extension of the depositing screen belt 3 in the area of the lifting rollers 9, 14 or to the imaginary extension of this longitudinal extension.
  • the distance of the first lifting roller 9 from the depositing screen belt 3 is marked with D 1 and the distance of the second lifting roller 14 from the depositing screen belt 3 is marked with D 2.
  • the distance D or the distances D 1 and D 2 are greater than 50% of the diameter d of the respective lifting roller 9, 14.
  • the distance D 1 of the first lifting roller 9 from the depositing screen belt 3 is greater than the distance D 2 of the second lifting roller 14 from the depositing screen belt 3.
  • the fleece web 5 can be guided expediently and in the embodiment in the operating state of the device over the underside of the second lifting roller 14 and over the top of the first lifting roller 9. This is particularly the case in the Figures 2 to 4
  • the first lifting roller 9 is preferably responsible for detaching the nonwoven web 5 from the depositing screen belt 3.
  • the second lifting roller 14 is recommended for holding down the nonwoven web 5 close to the depositing screen belt 3.
  • the detachment area 10 or the detachment line is expediently and in the exemplary embodiment close to the second lifting roller 14 and in particular below the second lifting roller 14.
  • the nose roller 7 can be moved or lowered in the vertical direction in such a way that the depositing screen belt 3 between the deflection roller 15 and the nose roller 7 is oriented in the transport direction T towards the device base 11.
  • the depositing screen belt has a gradient of 3° to 20° in this area.
  • the sieve belt 3 may have a gradient of about 7° and in the embodiment according to the Fig.3 have a gradient of about 15°.
  • the deflection roller 15 thus deflects the depositing screen belt 3 from its transport direction T, which previously ran parallel to the device base 11 ( Figures 2 and 3 ).
  • the ability of the nose roller 7 to move in the vertical direction means in particular the ability to move in the direction of the device base 11 and back.
  • the nose roller 7 is movable or telescopic in the horizontal direction.
  • Horizontal direction means in this context in particular in the direction parallel to the device base 11. Due to the horizontal mobility or telescoping of the nose roller 7, this nose roller 7 can, for example, be moved closer to the following device 8 or the calender 16.
  • the nose roller 7 can be moved or telescopic in the horizontal direction and can be moved or lowered in the vertical direction, so that a wide variety of positions of the nose roller can be set.
  • the nose roller 7 can be moved or telescopic in the horizontal direction and can be lowered in the vertical direction and in addition the lifting rollers 9, 14 can be moved in the vertical direction, different positions of the nose roller 7 can be set and the lifting rollers 9, 14 can be arranged in their lifting positions in such a way that in particular the distance A of the detachment area 10 from the nose roller 7 can be realized in the operating state of the device.
  • a follow-up device 8 is designed as a calender 16.
  • a further follow-up device 8 in the form of a winder 26 can be provided, with the calender 16 and then the winder 26 being arranged in the conveying direction of the nonwoven web 5.
  • the calender 16 has three calender rollers 12.1, 12.2 and 12.3, which can be moved in the vertical direction.
  • the nonwoven web 5 is guided in particular through the gap or nip between two of the calender rollers 12.1, 12.2, 12.3.
  • the three calender rollers 12.1, 12.2, 12.3 are expediently arranged one above the other in the exemplary embodiment.
  • the nonwoven web 5 is solidified or final consolidation is expediently and in the exemplary embodiment through a gap or nip that is formed between the calender rolls 12.1, 12.2, 12.3.
  • a consolidation area 13 of the calender 16 the nonwoven web 5 can then be consolidated or finally consolidated.
  • Consolidation area 13 in this context means the area in which the nonwoven web 5 can be consolidated or finally consolidated by the action of at least one calender roll 12.1, 12.2, 12.3.
  • the consolidation region 13 of the calender 16 is arranged above the nose roller 7 and above the deposition screen belt 3.
  • the detachment of the nonwoven web 5 from the depositing screen belt 3 takes place after a pre-consolidation of the nonwoven web 5.
  • the nonwoven web is thus recommended and in the embodiment before detachment from the depositing screen belt 3 pre-consolidated by means of a pre-consolidation device 25. This is particularly the case in the Fig.1 to recognize.
  • first lifting roller 9 and/or the second lifting roller 14 has a distance U from the nose roller 7 which is at least 50% of the diameter of the respective lifting roller 9, 14.
  • Distance U in this context means in particular the distance of the axis of rotation of the at least one lifting roller 9, 14 from the axis of rotation of the nose roller 7, wherein the distance U is expediently measured between the projections of the axes of rotation of the lifting roller 9, 14 and the nose roller 7 onto the depositing screen belt 3, wherein the projections of the axes of rotation are perpendicular to the longitudinal extension of the depositing screen belt 3 or to the imaginary extension of this longitudinal extension in the region of the distance U.
  • both lifting rollers 9, 14 each have a center distance U 1 and U 2 from the nose roller 7, which is at least 50% of the diameter d of the respective lifting roller 9, 14 ( Fig.4 ).

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

Claims (17)

  1. Dispositif, destiné à fabriquer des non-tissés en filaments continus, un système de filage (1) étant prévu pour filer les filaments et un système de refroidissement (2) étant présent pour refroidir les filaments, étant prévue par ailleurs une bande tamiseuse (3) de dépose sur laquelle les filaments peuvent être déposés dans une zone de dépose (4) pour former un voile de non-tissé (5), dans une zone de renvoi (6), la bande tamiseuse (3) de dépose étant susceptible d'être déviée de sa direction de transport par au moins un cylindre à ergots (7), au moins un dispositif de post-traitement (8) placé en aval de la bande tamiseuse (3) de dépose dans la direction de convoyage du voile de non-tissé (5) étant présent pour le voile de non-tissé (5), à l'avant de la zone de renvoi (6), le voile de non-tissé (5) étant désolidarisable de la bande tamiseuse (3) de dépose et transférable par la suite au dispositif de post-traitement (8), pour désolidariser le voile de non-tissé (5) de la bande tamiseuse (3) de dépose étant prévu au moins un cylindre de relevage (9), le cylindre de relevage (9) étant placé ou pouvant être placé au-dessus de la bande tamiseuse (3) de dépose, le voile de non-tissé (5) étant susceptible d'être désolidarisé au moyen de l'au moins un cylindre de relevage (9) dans une zone de désolidarisation (10) de la bande tamiseuse (3) de dépose qui est placée avec un écart A par rapport au cylindre à ergots (7), caractérisé en ce que
    l'au moins un cylindre de relevage (9) est réglable en hauteur par rapport à la bande tamiseuse (3) de dépose et est déplaçable vers celle-ci de préférence dans la direction verticale.
  2. Dispositif selon la revendication 1, l'au moins un cylindre de relevage (9) étant ou pouvant être placé par rapport au cylindre à ergots (7) de telle sorte que la zone de désolidarisation (10) se situe à l'avant de la zone de renvoi (6) dans la direction de transport de la bande tamiseuse (3) de dépose, l'au moins cylindre de relevage (9) étant placé ou pouvant être placé de préférence à l'avant ou à l'arrière du cylindre à ergots (7) dans la direction de transport de la bande tamiseuse (3) de dépose.
  3. Dispositif selon l'une quelconque des revendications 1 ou 2, l'écart A étant inférieur à l'écart C entre le cylindre à ergots (7) et un cylindre de renvoi (15) et s'élevant notamment à un maximum de 50 %, de préférence à un maximum de 25 %, de manière préférentielle à un maximum de 10 %, de manière particulièrement préférentielle à un maximum de 5 %, de manière tout particulièrement préférentielle à un maximum de 2,5 %, par exemple à 1 % de l'écart C.
  4. Dispositif selon l'une quelconque des revendications 1 à 3, l'au moins un cylindre de relevage (9) étant conçu sous la forme d'un cylindre de relevage (9) rotatif, notamment d'un cylindre de relevage (9) rotatif, susceptible d'être entraîné.
  5. Dispositif selon l'une quelconque des revendications 1 à 4, l'au moins un cylindre de relevage (9) étant placé ou pouvant être placé à un écart D par rapport à la bande tamiseuse (3) de dépose et ledit l'écart D étant supérieur à 50 % du diamètre d du cylindre de relevage (9) et s'élevant de manière préférentielle à au moins 55 %, de manière particulièrement préférentielle à au moins 60 % du diamètre d du cylindre de relevage (9).
  6. Dispositif selon l'une quelconque des revendications 1 à 5, le diamètre d de l'au moins un cylindre de relevage (9) s'élevant à de 10 à 500 mm, de préférence à de 25 à 400 mm, de manière préférentielle à de 50 à 300 mm, de manière particulièrement préférentielle, à de 100 à 250 mm.
  7. Dispositif selon l'une quelconque des revendications 1 à 6, au moins deux, notamment deux cylindres de relevage (9, 14) étant prévus, un deuxième cylindre de relevage (14) étant placé ou pouvant être placé de préférence dans la direction de transport de la bande tamiseuse (3) de dépose à l'avant du cylindre à ergots (7) et un premier cylindre de relevage (9) étant placé ou pouvant être placé de manière préférentielle dans la direction de transport de la bande tamiseuse (3) de dépose entre le deuxième cylindre de relevage (14) et le cylindre à ergots (7) ou à l'arrière du cylindre à ergots (7).
  8. Dispositif selon la revendication 7, le premier cylindre de relevage (9) et le deuxième cylindre de relevage (14) présentant le même diamètre d ou sensiblement le même diamètre d et de préférence l'écart m entre les axes de rotation des deux cylindres de relevage (9, 14) s'élevant à au moins 105 %, de manière préférentielle à au moins 110 %, de manière particulièrement préférentielle à au moins 115 % du diamètre d du cylindre de relevage (9, 14).
  9. Dispositif selon l'une quelconque des revendications 7 ou 8, le voile de non-tissé (5) pouvant être guidé par l'intermédiaire de la face inférieure du deuxième cylindre de relevage (14) et par l'intermédiaire de la face supérieure du premier cylindre de relevage (9).
  10. Dispositif selon l'une quelconque des revendications 1 à 9, le cylindre à ergots (7) étant déplaçable ou abaissable dans la direction verticale, de telle sorte qu'au moins entre le cylindre de renvoi (15) et le cylindre à ergots (7), la bande tamiseuse (3) de dépose soit orientée dans la direction de transport vers le fond inférieur (11) du dispositif et présente de préférence une pente de 3° à 20°, de manière préférentielle de 4° à 18°, de manière particulièrement préférentielle de 5° à 16°.
  11. Dispositif selon l'une quelconque des revendications 1 à 10, le cylindre à ergots (7) étant déplaçable ou télescopable dans la direction horizontale.
  12. Dispositif selon l'une quelconque des revendications 10 ou 11, l'écart A entre la zone de désolidarisation (10) et le cylindre à ergots (7) étant réglable par l'aptitude au déplacement vertical et / ou l'aptitude au déplacement horizontal ou l'aptitude au télescopage du cylindre à ergots (7).
  13. Dispositif selon l'une quelconque des revendications 1 à 12, le dispositif de post-traitement (8) étant un dispositif de consolidation, notamment un dispositif de liaison à air chaud, par exemple un four et /ou une calandre (16) et / ou le dispositif de post-traitement (8) étant une enrouleuse.
  14. Dispositif selon la revendication 13, le dispositif de consolidation ou la calandre (16) comportant au moins un cylindre de calandrage (12), notamment au moins une paire de cylindres de calandrage, au moins un cylindre de calandrage (12) étant déplaçable de préférence dans la direction verticale.
  15. Dispositif selon l'une quelconque des revendications 1 à 14, la désolidarisation du voile de non-tissé (5) de la bande tamiseuse (3) de dépose s'effectuant après une préconsolidation du voile de non-tissé (5).
  16. Dispositif selon l'une quelconque des revendications 1 à 15, l'au moins un cylindre de relevage (9) et /ou le deuxième cylindre de relevage (14) présentant par rapport au cylindre à ergots (7) un écart U qui s'élève à au moins 50 % du diamètre d du cylindre de relevage (9, 14) respectif.
  17. Procédé, destiné à transporter et à traiter un voile de non-tissé en filaments continus à l'aide d'un dispositif selon l'une quelconque des revendications 1 à 16, le voile de non-tissé (5) étant guidé par l'intermédiaire d'une bande tamiseuse (3) de dépose susceptible d'être déviée de sa direction de transport dans une zone de renvoi (6) par un cylindre à ergots (7), le voile de non-tissé (5) étant transféré à un dispositif de post-traitement (8) placé en aval, le voile de non-tissé (5) étant désolidarisé de la bande tamiseuse (3) de dépose à l'avant de la zone de renvoi (6), caractérisé en ce que
    pour sa désolidarisation de la bande tamiseuse (3) de dépose, le voile de non-tissé (5) est guidé par l'intermédiaire d'au moins un cylindre de relevage (9) qui est placé au-dessus de la bande tamiseuse (3) de dépose, l'au moins un cylindre de relevage (9) étant réglable en hauteur par rapport à la bande tamiseuse (3) de dépose et à cet effet, étant déplaçable de préférence dans la direction verticale, dans une zone de désolidarisation (10) qui est placée avec un écart A par rapport au cylindre à ergots (7), le voile de non-tissé (5) étant désolidarisé au moyen de l'au moins un cylindre de relevage (9) de la bande tamiseuse (3) de dépose, et le voile de non-tissé (5) étant amené ensuite vers le dispositif de post-traitement (8).
EP20208671.6A 2020-11-19 2020-11-19 Dispositif de fabrication de tissus non tissés à partir de filaments continus Active EP4001488B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP20208671.6A EP4001488B1 (fr) 2020-11-19 2020-11-19 Dispositif de fabrication de tissus non tissés à partir de filaments continus
JP2021175253A JP2022081417A (ja) 2020-11-19 2021-10-27 連続フィラメントから成る不織布を製造するための装置
KR1020210159418A KR20220068941A (ko) 2020-11-19 2021-11-18 연속 필라멘트로부터 부직포를 제조하는 방법
CN202111374384.XA CN114541044A (zh) 2020-11-19 2021-11-19 用于制造由连续长丝制成的非织造制品的设备
US17/530,509 US11598035B2 (en) 2020-11-19 2021-11-19 Method and apparatus for making a nonwoven from continuous filaments

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EP20208671.6A EP4001488B1 (fr) 2020-11-19 2020-11-19 Dispositif de fabrication de tissus non tissés à partir de filaments continus

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US5667749A (en) * 1995-08-02 1997-09-16 Kimberly-Clark Worldwide, Inc. Method for the production of fibers and materials having enhanced characteristics
US6338814B1 (en) * 1999-02-02 2002-01-15 Hills, Inc. Spunbond web formation
FR2861751B1 (fr) * 2003-10-31 2006-01-06 Rieter Perfojet Machine de production de nontisses de plusieurs qualites.
DE102017129300A1 (de) * 2017-12-08 2019-06-13 Trützschler GmbH & Co Kommanditgesellschaft Anlage und Verfahren zur Erzeugung eines Spinnvlieses

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