WO2008119314A1 - Système pour traiter des non-tissés - Google Patents

Système pour traiter des non-tissés Download PDF

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Publication number
WO2008119314A1
WO2008119314A1 PCT/DE2008/000310 DE2008000310W WO2008119314A1 WO 2008119314 A1 WO2008119314 A1 WO 2008119314A1 DE 2008000310 W DE2008000310 W DE 2008000310W WO 2008119314 A1 WO2008119314 A1 WO 2008119314A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
distributor
nonwoven
steam
fleece
Prior art date
Application number
PCT/DE2008/000310
Other languages
German (de)
English (en)
Inventor
Ullrich MÜNSTERMANN
Stefan Krebs
Original Assignee
Fleissner Gmbh
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 Fleissner Gmbh filed Critical Fleissner Gmbh
Priority to PL08706907T priority Critical patent/PL2129821T3/pl
Priority to JP2010500061A priority patent/JP5509065B2/ja
Priority to AT08706907T priority patent/ATE521744T1/de
Priority to CN2008800105044A priority patent/CN101652509B/zh
Priority to EP08706907A priority patent/EP2129821B8/fr
Publication of WO2008119314A1 publication Critical patent/WO2008119314A1/fr

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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
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—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 yarns or filaments made mechanically
    • D04H3/11—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 yarns or filaments made mechanically by fluid jet
    • 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
    • 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
    • D04H1/542—Adhesive fibres
    • D04H1/544—Olefin series
    • 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
    • D04H1/542—Adhesive fibres
    • D04H1/55—Polyesters
    • 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
    • D04H13/00—Other non-woven fabrics
    • 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
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets

Definitions

  • the invention relates to a device for processing nonwovens according to the preamble of claim 1.
  • EP 1 553 222 A1 discloses an apparatus for processing nonwovens with the aid of steam, in which superheated steam is conducted onto the nonwoven via a hollow distributor device having numerous nozzle openings.
  • the invention has for its object to improve such a device and to expand the possibilities of nonwoven fabric / nonwoven processing
  • the nozzle openings for the gaseous medium such as inert gas, air, water vapor in a housing wall of the Verteilervor- direction are arranged and a distance A smaller than 10 mm, preferably less than 8 mm or 5 mm to the surface of the treated web or the web goods have.
  • the distributor device is designed as a distributor tube, which is acted upon by steam. With the help of the steam jet, the fleece can be treated in a cost effective manner. It is also advantageous if the distributor tube is subjected to a vapor pressure of between 5 and 30 bar or 10 and 25 bar.
  • An additional possibility according to the invention is when a length of the nozzle opening corresponds approximately to the thickness of the housing wall. Furthermore, it is advantageous if the distributor device is designed such that it emits the steam jet over its entire working width with approximately the same temperature and / or pressure on the nonwoven or the web.
  • a vapor discharge opening is provided in the region of the end or in the region of the downstream side of the distributor device.
  • a control valve or a steam release valve controllable in dependence on one or more parameters is connected to the steam outlet opening.
  • the distributor device and / or the distributor tube is driven to oscillate with the aid of an adjusting device. Another advantage is when the distributor device is exposed to superheated steam.
  • cross section in the region of the underside of the distributor tube is flattened with the nozzle openings or conically dented or concave.
  • the device for consolidating fibers and / or webs formed from filaments is arranged between two deflecting rollers of a structuring belt.
  • the apparatus for consolidating fibers and / or webs formed from filaments consists of stainless steel and is accommodated in two or more holders.
  • the nozzle openings are arranged in one, in two or more rows in the manifold. It is advantageous that the nozzle openings provided in the distributor device or the distributor tube are arranged offset in a row with respect to the nozzle openings of the adjacent and parallel rows.
  • the nozzle openings have an outlet diameter between 0.1 mm to 0.5 mm and the hole spacing between the nozzle openings is between 1 mm and 5 mm or between 1.2 mm and 2 mm.
  • the distributor device or the distributor tube has a length of between 1 m and 5 m and is equipped at least on its inlet and / or outflow side with a pipe coupling or a flange connection.
  • the distributor tube is received in a holder in height and / or laterally adjustable.
  • a plurality of devices for solidifying fibers and / or webs formed from filaments are associated with a structuring drum or a structuring belt with the aid of a gaseous medium.
  • the nonwoven is guided over the structuring belt or the patterning drum and the goods are applied from the rear side with the aid of the steam jet, forming surface patterns and / or protruding or raised elements or indentations from the web.
  • a further embodiment of the invention provides a superheater for generating superheated steam, wherein this superheater is controllable to influence the moisture content of the web material at least via an actuator.
  • this superheater is controllable to influence the moisture content of the web material at least via an actuator.
  • the superheater is connected to a control or regulating circuit for determining the moisture content of the web material and is adjusted to a corresponding heating temperature as a function of the moisture content of the nonwoven or the web.
  • the temperature of the superheater and the moisture of the web material by means of at least one sensor each for influencing the moisture content of the web, wherein the sensors are connected to a control or regulating circuit and actual measured values are forwarded to a computer, stored there and compared with the adjustable or desired setpoints, the difference between the actual and setpoint serve as a control or controlled variable for setting the web to a desired moisture.
  • the distributor device and / or a distributor tube are assigned at least device parts for processing and / or forwarding the web material to a next processing or storage station, which is in the immediate vicinity the distribution device are arranged and partially or entirely made of plastic.
  • certain device parts according to this embodiment of the invention woven partially or entirely made of plastic, they heat up when using hot or superheated steam not so strong, since the plastic acts as an insulating agent. In this way, the heat energy inherent in the gaseous medium can be almost completely supplied to the product to be treated, which improves the overall efficiency.
  • the plastic jacket contributes significantly to the fact that the heat losses through the dissipation of heat z. B. be reduced by the metal strip or by the metal parts of the conveying organs. Furthermore, the parts made of plastic are cheaper than metal parts.
  • the pre-consolidation is also particularly suitable in order to avoid distortion of the fleece at the transfer points of the individual process stages at high production speeds and thus does not worsen the MD / CD ratio presented by the carding machine.
  • the fleece With the help of the steam jet, the fleece can be treated in a cost effective manner.
  • a particular embodiment of the invention provides an embodiment as a re-humidifying device.
  • the following arrangement is particularly advantageous:
  • c) to the distributor device is followed by a dryer and thereon one or more remoistening devices.
  • the steaming device is located in front of the dryer, then the surface of the nonwoven can be treated again in a cost-effective manner and can be made grippier or fluffier. It is particularly advantageous if the needling device is located immediately in front of the dryer.
  • the gaseous medium such as inert gas, air and / or water vapor is applied to the web or the web instead of the usual hydroentanglement and the web can be easily transported to the next processing station after the first edition of Vliesfaserstoffe or the card.
  • the amount of fiber can be applied to a conveyor belt by means of the feeding device (carding);
  • At least one of the gaseous medium such as inert gas, air and / or water vapor on the web or the nonwoven dispensing first distributor device connects to the task device (carding)
  • an air laying device by means of which the PuIp can be applied as a second layer on the conveyor belt; d) after the one air laying device (airlay) a second carding is provided with the help of nonwoven fabric made of a polymer such as PE or PET or a fiber mixture of natural fibers and Synthesefa- fibers and / or biofasem as a third layer applied to the web or the nonwoven is
  • a liquid medium such as water
  • the gaseous medium such as inert gas, air and / or water vapor
  • the dryer is followed by a remoistening device.
  • the device parts of the distributor device and / or the distributor tube at least one conveyor belt and / or Vernadelungsband heard, which is arranged below the distributor device and partially or entirely made of plastic or coated with plastic, wherein a distance between the outlet end of the nozzle openings in a housing wall and the point of impact of the gaseous medium such as inert gas, air and / or water vapor on the product to be loaded or the fleece between 0.5 mm and 8 mm or between 1 mm and 5 mm. If only a very small change in the surface of the fleece is to be achieved, the distance is set over 20 mm. If the distance is increased, so the effect of the gas or
  • the gaseous medium such as inert gas, air and / or water vapor
  • a device with the following features is also advantageous: a) to the feeding device (carding) includes at least a first gaseous medium such as inert gas, air and / or water vapor on the web or the nonwoven dispensing needling device or the distributor device, which is a distance between the outlet end of the nozzle openings in the housing wall and the Impact of the steam jet on the product to be acted upon or the fleece between 0.5 mm and 8 mm or between 1 mm and 5 mm; b) at least one second distributor device for the gaseous medium, such as inert gas, air and / or water vapor and / or a needling device for at least one second distributor device for the gaseous medium such as inert gas, air and / or water vapor on the web or fleece liquid medium such as water on; c) the distributor device and / or the distributor tube are at least
  • Device parts such as conveyor belt and / or deflection rollers for processing and / or forwarding the web material to a next processing or deposition station assigned, which are arranged in the immediate vicinity of the distribution device and partially or entirely made of plastic.
  • a feeding device carding machine 10
  • a conveyor belt (4) by means of the fibers or filaments (production of fleece or web material),
  • Pre-consolidation c) an application device (airlay 14) designed in particular as an airlaying device, with the aid of which paper can be brought as a second layer onto the nonwoven or the web material located on the conveyor belt (4),
  • a second applicator device (carding 10.2), by means of which nonwoven fibrous materials of a polymer such as PE or PET or a fiber mixture of natural fibers and synthetic fibers and / or biofibers can be brought as a third layer on the nonwoven or the web,
  • a gaseous medium inert gas, air and / or water vapor.
  • the amount of fiber can be brought to a conveyor belt by means of the feeder (carding); b) at least one of the gaseous medium such as inert gas, air and / or water steam on the web or the nonwoven dispensing first distributor device connects to the task device (carding) to c) and an air laying device (airlay), with the help of the PuIp as second layer can be brought onto the conveyor belt; d) according to the one airlaying device (airlay) is provided a second carding, with the help of nonwoven fabric made of a polymer such as PE or
  • PET or a fiber mixture of natural fibers and synthetic fibers and / or biofibers as a third layer on the web or the nonwoven can be brought, e) then the web or the web using a Vemadelungs- device, a liquid medium such as water fed and / or with Help the distribution device the gaseous medium such as inert gas, air and / or water vapor; f) the nozzle openings are arranged in the housing wall of the distributor device or the distributor tube and have the distance between the outlet end of the nozzle openings in the housing wall and the point of impact of the steam jet on the product to be acted upon or fleece between 1 mm and 5 mm, in particular between 1 mm and
  • the distributor device and / or the distributor tube are at least associated with device parts for processing and / or forwarding the web to a next processing or storage station, which are arranged in the immediate vicinity of the distribution device and partially or entirely made of plastic.
  • the distributor device and / or the distributor tube can be driven in an oscillating manner by means of an adjusting device.
  • the distributor device is designed as a manifold, which is acted upon by superheated steam and a vapor pressure between 5 and 30 bar or between 10 and 25 bar.
  • the distance between nozzle and nonwoven is between 1 mm and 2 mm. At very large distances, turbulence occurs, ie exactly the opposite of solidification. However, this may also be desired for a product in order to make it more voluminous.
  • the fleece can also be treated with water needling and then with a dryer.
  • the dryer can be saved when the web is needled with superheated steam. In this case, it is also possible to use non-synthetic fibers or products which should not be exposed to excessive moisture or heat.
  • the needling device according to the invention can also be used for preconsolidation of a nonwoven.
  • An advantageous arrangement consists of:
  • the grafting device (clutter) is followed by a gaseous medium such as inert gas, air and / or water vapor on the web or the nonwoven dispensing needling device or the distributor device,
  • a gaseous medium such as inert gas, air and / or water vapor
  • a device having the following features: a) the amount of fiber can be applied to a conveyor belt with the aid of the feeding device (carding machine);
  • the feeding device connects the gaseous medium such as inert gas, air and / or water vapor on the web or the nonwoven dispensing distribution device
  • the web or fleece can be supplied with a liquid medium such as water by means of a needling device and / or the gaseous medium such as inert gas, air and / or water vapor can be fed to the web or the fleece with the aid of the distributor device,
  • the web or web is fed to the dryer and / or the storage or collection point.
  • 1a shows a device for the consolidation of fibers and / or webs formed from filaments
  • FIG. 1b shows a further embodiment with a first distributor pipe for the supply of steam to a second distributor pipe, which is connected to the second distributor pipe via a plurality of connecting lines,
  • FIG. 2 shows a longitudinal section through the apparatus for solidifying fibers and / or webs formed from filaments according to FIG. 1a, FIG.
  • FIG. 3a shows a cross section of the device according to Fig. 1b
  • 3b shows the cross section in the region of the underside of the distributor tube with the flattened nozzle openings
  • 3c shows the cross section in the region of the underside of the distributor tube with the conically dented or concave nozzle openings
  • 4 shows a schematic representation of a holder for receiving a distributor tube
  • FIG. 5 shows a cross section of the apparatus for consolidating fibers and / or webs formed from filaments according to FIG. 1b, FIG.
  • FIG. 6 shows a further embodiment of a device for consolidating fibers and / or webs formed from filaments with a remoistening device
  • Fig. 8 is a schematic representation of a processing plant in which the surface of the web is treated at at least one point from two sides by the needling device for a gaseous medium.
  • a device 1 or 1.1 for solidification of fibers and / or formed from filaments webs is shown. It essentially consists of a hardening drum or structuring drum 3 over which, according to FIG. 2, a needling belt 4 is guided.
  • the fibers and / or the fleece formed from filaments is supplied to the hardening drum or structuring drum 3 via a compacting device 6 which is only partially shown in the drawing.
  • the compacting device 6 on a conveyor belt 6.1.
  • the solidification drum 3 has a suction device 3.1, via which the gaseous medium is removed.
  • the apparatus 1 for consolidating fibers and / or filaments formed from filaments comprises one or more distributor devices 2, which is supplied with a gaseous medium or with water vapor at an inflow side 7 of the distribution devices 2.
  • the distributor devices 2 are arranged adjustable in height by means of a lifting device 2.11 in order to change the distance between the surface of a web 11 and the outlet end of a nozzle opening 2.2 as needed.
  • the apparatus 1 for preconsolidating fibers and / or webs formed from filaments is provided between two deflecting rollers 4.1 of the structuring belt 4.
  • the still unconsolidated bulky web 11 is compressed between the two strands and coarsely consolidated in this compressed state by the steam jets before undergoing its final consolidation with a second or further distribution device.
  • the distributor device 2 is part of a needling device which can be operated with a gaseous medium such as inert gas, hot air or steam at a temperature between 150 ° C and 250 0 C, preferably above the saturation temperature.
  • a gaseous medium such as inert gas, hot air or steam
  • the distributor device 2 is designed as a distributor tube 2.4, which according to FIG. 1a can be acted upon with steam and, as already mentioned, also with another gaseous medium.
  • the distribution pipe 2.4 is made of corrosion-resistant steel or stainless steel and has a length of approximately 1 m to 5 m.
  • the manifold 2.4 is equipped with a pipe coupling or according to the drawing with a flange 9, so that can be connected to the flange 9 each have a further line or valves.
  • the distributor tube 2.4 is height and / or side adjustable received in a holder 5.
  • the supply of steam is effected according to FIG. 1b by a first upstream, parallel distribution pipe 2.6, which is connected to the third distribution pipe 2.4 via a plurality of connecting pipes 2.7. Furthermore, the cross-section in the region of the underside of the distributor tube 2.4 can be flattened with the nozzle openings 2.2 (FIG. 3b) or conically dented or concave (FIG. 3c).
  • the nozzle openings 2.2 can be arranged in one, in two or more rows in the manifold 2.4.
  • the distributor tube 2.4 can be subjected to a vapor pressure of between 5 and 30 bar.o of 10 and 25 bar.
  • the setting of the vapor pressure can be changed by means of a control device not shown in the drawing.
  • the distributor device 2 is designed such that it delivers the steam jet to the nonwoven or the web 11 over its entire working width with approximately the same temperature and / or the same pressure.
  • a steam discharge opening 3.2 (FIG. 4) or a steam discharge valve 2.5 (FIG. 1a) is provided, so that cold air is forced out of the distribution device 2 when the system is started up can, when the distributor device 2 is supplied with water vapor. In this way, the system is brought to the required operating temperature with little energy in a very short time.
  • a control valve or a controllable depending on one or more parameters steam-relief valve (control valve) 2.5 may be connected.
  • the distributor tube 2.4 is designed as a single-walled tube and the nozzle openings 2.2 are embedded directly in a housing wall 2.1.
  • the vapor pressure is reduced by the dynamic pressure loss until it is virtually depressurised at the exit from the nozzle bore, but still retains its kinetic energy. Only when the nozzle jet leaves the nozzle bore 2.2, its kinetic energy is reduced by the beam gradually spreads fan-shaped. Therefore, it is advantageous that a distance A between the outlet end of the nozzle openings 2.2 in the housing wall 2.1 and the point of impact of the steam jet on the goods to be acted upon or the fleece 11 is as small as possible.
  • FIGS. 1 b and 5 show a second exemplary embodiment of the device 1 for consolidating fibers and / or webs formed from filaments.
  • the distribution of the steam takes place via the first distributor pipe 2.6, which is connected via the connecting lines 2.7 to a second distributor pipe 2.9, which is connected to the third distributor pipe 2.4 extending parallel to the first and second distributor pipes 2.6, 2.9.
  • the distribution pipes 2.4, 2.6, 2.9 may have differently shaped cross-sectional shapes.
  • constrictions can additionally be provided in the first distributor tube 2.6 which change or reduce the cross section of the distributor tube 2.6 continuously or stepwise to an inflow side 7.1 and 7.2.
  • the change in cross section can be achieved with the aid of a cone-shaped installation body 2.10, which is designed as a solid or closed hollow body and is flowed around by the steam.
  • a cone-shaped installation body 2.10 which is designed as a solid or closed hollow body and is flowed around by the steam.
  • cone-shaped 2.10 or internals of similar shapes may be provided in the first manifold 2.6 to improve vapor distribution.
  • the steam supply according to the arrows 7.1, 7.2 provided at both ends of the distributor device 2 ensures a uniform vapor pressure distribution in the distributor tube 2.6.
  • the steam discharge opening 3.2 can thus be dispensed with, since the steam no longer propagates longitudinally but transversely to the distributor pipe 2.4 and the condensate formed or residual air remaining in the distributor pipe can be displaced very well downwards out of the nozzle bores 2.2 when the overall apparatus is started up.
  • FIG. 6 shows a further exemplary embodiment of a device 1 for consolidating fibers and / or webs formed from filaments.
  • the needling device is provided between two deflection rolls 4.1 of the structuring strip 4, which lie very close to each other. The distance is chosen so that only one needling between the guide rollers 4.1 can be provided.
  • two or more needling devices or associated distribution pipes 2 may be provided between two guide rollers 4.1.
  • deflection rollers 4.1 further needling devices can be provided, which can act on the fleece 11 either only from one or both sides.
  • SAP superabsorbents used herein in the form of fibers, powders or superabsorbent polymers, hereinafter referred to as SAP, means plastics which are capable of many times their own weight - up to 1000 times - of liquid, usually water or distilled water, soak up.
  • the powder is mainly used in the manufacture of diapers but also of feminine hygiene products, incontinence care and in small quantities also in cable sheathing for deep sea pipelines.
  • the powder or SAP can be applied to the surface of the fleece and covered with the aid of a second layer, wherein the two layers are needled in a method step according to the invention.
  • the superabsorber is a copolymer of acrylic acid (propionic acid, C 3 H 4 O 2 ) and sodium salt (sodium salt of acrylic acid, NaC 3 H 3 O 2 ), it being possible for the ratio of the two monomers to vary from one another.
  • a so-called core cross-linker (CXL) is added to the monomer solution, which connects the long-chain polymer molecules formed in places with each other by chemical bridges (they "cross-linked”). These bridges make the polymer water insoluble. When water or aqueous salt solutions penetrate into the polymer particles, it swells up, tightens this network at the molecular level and the water can no longer escape by itself.
  • SXL Surface Cross-Unking
  • the basis weight is advantageously between 35 g / m 2 and 45 g / m 2 and with a total thickness of the web of 0 , 5 mm 40 gsm.
  • the nonwoven or the web can be produced according to the following method steps (see Fig. 7a) - 7c); Fig. 6):
  • the amount of fiber can be brought onto the conveyor belt 4 with the aid of the feeding device, in particular a first carding machine 10.
  • the gaseous medium such as inert gas, air and / or water vapor, adjoins the delivery device or first carding machine 10 onto the web or the nonwoven 11 which deposits the dispensing device 2
  • a second carding machine 10.2 is provided so that, as desired, a three-layer nonwoven fabric can also be produced with the same installation.
  • the second carding 10.2 adjoins the airlaying device (airlay 14), with the aid of which nonwoven fibrous materials made of a polymer such as PE or PET can be brought onto the web or web 11 as a third layer.
  • the distributor device 2 is followed by a dryer 12 and, at the same time, one or more remoistening devices 20, with the aid of which the end product is adjusted to the desired moisture content.
  • the nozzle openings 2.2 are arranged in the housing wall 2.1 of the distributor device or the distributor tube 2 and have the distance A between the outlet end of the nozzle openings 2.2 in the housing wall 2.1 and the point of impact of the steam jet on the product to be acted upon or the fleece 11 between 0, 5 mm and 50 mm or between 10 mm and 50 mm in particular between
  • the feel and fluffiness of the fleece is to be influenced. If the fleece is to be solidified exclusively, it is advantageous if the distance A is chosen to be small, it is then between 0.5 mm and 3 mm,
  • the web or web 11 is or can be fed to a storage or collection point 13 , i) subsequently, the web or web 11 is or can be fed to a storage or collection point 13 ,.15.
  • the fleece or the web can also be produced in the following process steps: a) the given from a feeder 10 on the conveyor belt 4 filaments are compacted by means of a calender and / or the compacting device (6), b) the compacted web or the web (11) is one or more Vernadelungs wornen (1, 1.1) supplied and with the aid of the gaseous medium such as inert gas, air and / or the superheated steam at a temperature which is above the saturation temperature, processed from one or two sides, c) depending on the moisture content, the nonwoven or the web (11) of a dryer ( 12) and then fed to a further processing device and / or dispensing station or to a winding device (13).
  • the gaseous medium such as inert gas, air and / or the superheated steam
  • the total thickness of the web may be less than 1, 2 mm or have a thickness of 0.2 to 1.0 mm or 0.3 to 0.8 mm or 0.4 to 0.6 mm in one-sided solidification. For bilateral solidification, these values may be higher.
  • FIGS. 7a to 7f schematically show various possible variations of the arrangement of the device parts of the device for consolidating fibers and / or webs formed from filaments with a similar device, in which arrangement the water needling device 16 assigned.
  • the vertical arrows correspond to the distributor tube 2 or the needling device for consolidating nonwovens or webs formed from fibers and / or from polymer filaments by means of a gaseous medium, such as
  • Reference numeral 3 corresponds to a solidification drum or patterning drum which may be associated with one or more beam hardening means.
  • the distributor tube 2 can be insulated and for this purpose be provided with a sheath, not shown in the drawing, which completely surrounds the distributor tube 2 into the region of the nozzle openings 2.2.
  • the steam comes from an evaporator and is passed through a superheater 7.3 as superheated steam to the manifold 2
  • the steam comes from an evaporator and is passed as shown in Fig. 1b via a superheater 7.3 as superheated steam to the manifold 2.
  • the superheater 7.3 for determining the desired humidity can be controlled according to the user-specified parameter settings for determining the moisture content of the web at least via an actuator which is in operative connection with a temperature sensor and / or a moisture sensor, so that the web or the fleece the optimal humidity can be adjusted. If the humidity is set to a certain value, the electric charge can also be favorably influenced and reduced in a simple manner.
  • the superheater 7.3 can be formed as an electric or gas-powered superheater. Furthermore, the temperature of the superheater can be variable for influencing the moisture content of the web material with the aid of the control or regulating device.
  • the superheater 7.3 is connected to the inlet side of the distributor device 2 and heats or superheats the medium entering the distributor device, such as water vapor, to a desired temperature, so that the web material, which is exposed to the gaseous medium, is adjusted to the desired humidity can be.
  • the determined actual measured values are forwarded to a computer, stored there and compared with the settable or desired setpoint values. The difference The actual and setpoint value serves as a controlled or controlled variable for adjusting the web to a desired moisture content.
  • the carrier fleece may consist of the polyester fibers and / or polypropylene fibers or a fiber mixture which is placed on the conveyor belt 4 via the fleece laying device or the first carding machine 10.
  • the carding machine 10 consists of a box feeder with a shaking slide arranged underneath, which transfers the fibers of the carding machines with scraping and tear rollers 17, which spread uniformly over the width.
  • the following endless belt 4 transfers the laid carded web of the needling device 2 instead of a calendering device.
  • a calendering device 19 can be saved according to FIG. Ever, if no synthetic fibers are used or if not wet but needled only with superheated steam.
  • the calender 19 may, as desired, provide with energy and heat a finely embossed, consolidated nonwoven.
  • the solidification effect should only be small, so that the pigtail still intimately bonds with the carded fiber fleece by means of needling.
  • FIGS. 7a to 7f and 8 show similar exemplary embodiments of the device 1 for consolidating fibers and / or fleeces formed from polymer filaments or two- or multilayer composite nonwovens, wherein in all examples the amount of fiber is determined with the aid of the first application device or the like
  • Carding machine 10 can be deposited on the conveyor belt 4 as web material or nonwoven fabric 11, onto the hollow first steam atomizing device or distributor device 2 comprising numerous nozzle openings 2.2 a gaseous medium such as inert gas, air and / or water vapor or in particular superheated steam the surface of the fleece can be passed.
  • FIGS. 7a to 7b show a continuous system for producing a composite web with only one carded web as carrier support.
  • the first needling device 2 for inert gas, air and / or water vapor which is followed by the air laying device Airlay device 14 for PuIp.
  • the fleece is solidified in such a way that it can be readily fed to a subsequent conveying device, since it already has a low strength.
  • Pre-consolidation is also particularly suitable in order to avoid distortions of the fleece at the transfer points of the individual process stages at high production speeds and thus not to impair the MD / CD ratio presented by the carding machine.
  • Vliesvorverfest By Vliesvorverfest only inevitable delays at the transfer points of the individual process stages can be minimized at high production speeds, so that the presented by the carding MD / CD ratio is not deteriorated.
  • the second nonwoven layer is laid onto the conveyor belt or endless belt 4 with the aid of the second carding machine 10.2 and then the two nonwoven layers are loaded with the aid of the first water needling device 16 and connected to one another. Subsequently, the nonwoven fabric according to FIG. 7a is fed to the dryer 12 and then to the depositing station 15.
  • only the steam needling device 2 is used instead of the water needling device 16.
  • This has, among other things, the part that only natural fibers or a mixture of natural fibers and synthetic fibers and / or biofibers can be used and solidified using the Dampfvernade- treatment device 2. Since only steam needling is used according to this example, it is possible to dispense with the very expensive dryer or sieve drum device 12.
  • the sieve drums according to the arrows is assigned directly to the front side of the fan.
  • the dryer 12, the calender 19 can connect.
  • the calender is advantageously used in the processing of synthetic fibers.
  • the solidification must be so intense that a higher, satisfactory abrasion resistance results in the end product.
  • FIG. 7c likewise shows a continuous system for the production of a composite nonwoven with a carded web as carrier support.
  • the second carding 10.2 is placed on this after application of the pulp layer, so that a three-day composite is formed.
  • the carding 10.2 or the web 11 is fed via the deflection rollers 4.1 two water needling devices 16 connected in series and then to the dryer 12.
  • the Dampfvemadelungs worn 2 is provided after the tear rollers 17, 10 natural fibers or a mixture of natural fibers and synthetic fibers and / or biofibers can be placed on the conveyor belt 4 at the feed point.
  • FIG. 7d likewise shows a continuous system for producing a composite nonwoven with only one carded web as carrier support.
  • the second carding machine 10.2 is placed on the pulp layer, so that a three-layered composite is also formed, but this only with the aid of the first steam-atomizing devices 2 directly after the second carding machine 10.2 and the two successively arranged DampfVernadelungs wornen 2 after the pulley 4.1 is treated.
  • This makes it possible that in this composite also natural fibers or a mixture of natural fibers and synthetic fibers and / or biofibers can be used.
  • the elaborate dryer 12 can be dispensed with if the product is treated only with superheated steam or superheated steam, since the product leaves the steam needling devices 2 in a dry state.
  • the finished web is then stored or fed to the take-up device 15.
  • Fig. 7e, and 7f is also a continuum plant for producing a composite nonwoven fabric with only one carded web as a support pad shown.
  • the steam needling devices 2 are provided directly behind the second carding machine 10.2, and then the fleece 11 according to FIG. 7e is provided to the two water needling devices 16 arranged one behind the other, then to the dryer 12, possibly the calender 19 and finally the Deposit point 15 supplied.
  • the water needling devices 16 according to FIG. 7e are replaced by two steam-spreaders 2 and the drier 12 is dispensed with.
  • FIGS. 1 to 8 have the following features in unison:
  • the amount of fiber can be brought onto the conveyor belt 4 with the aid of the feeding device, in particular the first carding machine 10.
  • the gaseous medium such as inert gas, air and / or water vapor, adjoins the delivery device or first carding device 10 onto the web or the nonwoven distribution device 2
  • the second carding machine 10.2 is provided in each case, so that, as desired, a three-layer nonwoven fabric can also be produced with the same installation.
  • the second carding machine 10.2 adjoins the airlaying device (airlay 14), with the aid of which nonwoven fabric materials of a polymer such as PE or PET can be brought onto the web or the nonwoven 11 as a third layer,
  • the web or web 11 can be supplied with inert gas, air and / or water vapor and / or with the aid of the needling device 16 a liquid medium such as water, with the aid of the filling device 2,
  • the nozzle openings 2.2 are arranged in the housing wall 2.1 of the distributor device or the distributor tube 2 and have the distance A between the outlet end of the nozzle openings 2.2 in the housing wall 2.1 and the point of impact of the steam jet on the product to be acted upon or the fleece 11 between 0, 5 mm and 50 mm or between 10 mm and 50 mm, in particular between 8 mm and 20 mm, if the grippiness and fluffiness of the fleece is to be influenced. If the fleece is to be solidified exclusively, it is advantageous if the distance A is chosen to be small, then it is between 0.5 mm and 3 mm. In the device described above, the method for producing a composite nonwoven for receiving and storing liquids can be carried out.
  • the composite fleece consists of a carded web which is treated for consolidation.
  • the solidified carded web is given a pulp layer of wood pulp fibers, which is brought into firm contact with the carded web.
  • the carded web is dry preconsolidated prior to coating with the superabsorbent material, then the layer of pulp fibers is placed on this preconsolidated carded web and all bonded together.
  • the preconsolidation can be carried out with compressed air, advantageously with superheated superheated steam. Furthermore, the pre-consolidation can be generated by calendering. However, the calender is not suitable for all fibrous materials, therefore, the steaming is particularly advantageous.
  • connection of the cellulose fiber layer with the carded web can also be produced by means of hydrodynamic needling and the composite nonwoven then dried.
  • hot steam is preferably used so that as many as possible fiber mixtures or superabsorbers can be used which are not adversely affected by the superheated steam.
  • the device parts for processing and / or forwarding the web material to a next processing or storage station which are arranged in the immediate vicinity of the distribution device 2, partially or entirely made of plastic.
  • the device parts of the distributor device 2 and / or the distributor tube 2.4 include, in particular, the deflection rollers or deflection rollers 4.1 of the individual conveyor belts 4, the compacting device and also those parts which are directly or indirectly exposed to the superheated steam. This is to ensure that the components, parts of the device or the entire device does not heat up too much during operation of the device and thus deprive the steam heat energy, as far as possible the railway goods to be supplied.
  • the overall efficiency of the system can be significantly improved and the web material can be effectively treated or edited.
  • it is also very important that the distance A between the outlet end of the nozzle openings 2.2 in the housing wall 2.1 and the point of impact of the gaseous medium such as inert gas, air and / or water vapor to the product to be acted upon or the fleece between 0.5 mm and 8 mm or between 1 mm and 5 mm or between 1 mm and 3 mm.
  • An optimal needling of the fleece is achieved at a distance of about 1 mm. At this distance, the steam jet has its optimum effect and the heat losses are low, as the
  • plastic PE PET or plastic composite material can be used.
  • the plastic sheathing should be correspondingly high with respect to the material thickness. It is advantageous if the thickness of the casing corresponds to approximately 20 to 50% of the thickness of a sheet metal part.
  • Needling device for a liquid medium such as water 17 Tear roller, Scratch roller

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

Abstract

L'invention concerne un système pour traiter des non-tissés formés de fibres et/ou de filaments ou un autre tissu en bande. Ce système est constitué d'un dispositif distributeur (2) tubulaire qui présente une pluralité d'orifices (2.2) et permet de soumettre le non-tissé ou le tissu en bande à l'action d'un agent gazeux. L'invention se caractérise en ce que lesdits orifices (2.2) sont disposés dans une paroi de carter (2.1) du dispositif distributeur (2) située face au non-tissé ou au tissu en bande.
PCT/DE2008/000310 2007-03-29 2008-02-21 Système pour traiter des non-tissés WO2008119314A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PL08706907T PL2129821T3 (pl) 2007-03-29 2008-02-21 Urządzenie do obróbki włóknin
JP2010500061A JP5509065B2 (ja) 2007-03-29 2008-02-21 フリース処理装置
AT08706907T ATE521744T1 (de) 2007-03-29 2008-02-21 Vorrichtung zur bearbeitung von vliesen
CN2008800105044A CN101652509B (zh) 2007-03-29 2008-02-21 用于加工无纺布的装置
EP08706907A EP2129821B8 (fr) 2007-03-29 2008-02-21 Système pour traiter des non-tissés

Applications Claiming Priority (13)

Application Number Priority Date Filing Date Title
DE102007015564.8 2007-03-29
DE102007015564 2007-03-29
DE102007017957.1 2007-04-17
DE102007017957 2007-04-17
DE102007029227 2007-06-22
DE102007031163 2007-07-04
DE102007031163.1 2007-07-04
DE102007034902.7 2007-07-24
DE102007034902 2007-07-24
DE102007036464.6 2007-08-01
DE102007036464 2007-08-01
DE102007036579 2007-08-02
DE102007036579.0 2007-08-02

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2104402A (en) * 1934-11-09 1938-01-04 Rieffel August Steaming and drying machine
US3010179A (en) 1959-11-18 1961-11-28 Alamac Knitting Mills Inc Method of treating pile fabrics
US3040412A (en) 1955-12-27 1962-06-26 Owens Corning Fiberglass Corp Method of making porous fibrous sheet material
US3113149A (en) 1963-12-03 Process for the continuous manufac-
US3113349A (en) * 1959-06-25 1963-12-10 Pellon Corp Methods and apparatus for the production of perforated non-woven fiber webs
EP1069222A1 (fr) 1999-07-16 2001-01-17 Sächsisches Textilforschungsinstitut e.V. Procédé pour consolider des non-tissés fibreux et/ou filamentaires
WO2001053588A2 (fr) 2000-01-17 2001-07-26 Fleissner Gmbh & Co. Maschinenfabrik Procede et dispositif pour produire des non tisses composites par enchevetrement par eau
WO2001063032A1 (fr) 2000-02-24 2001-08-30 Fleissner Gmbh & Co. Maschinenfabrik Procede et dispositif de fabrication de non-tisses composites a l'aide de l'aiguilletage hydrodynamique
EP1553222A1 (fr) 2002-10-08 2005-07-13 Mitsubishi Rayon Engineering Co., Ltd. Ajutage concu pour former des jets de vapeur sous pression, et procede et appareil permettant de produire un non-tisse au moyen de cet ajutage

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113149A (en) 1963-12-03 Process for the continuous manufac-
US2104402A (en) * 1934-11-09 1938-01-04 Rieffel August Steaming and drying machine
US3040412A (en) 1955-12-27 1962-06-26 Owens Corning Fiberglass Corp Method of making porous fibrous sheet material
US3113349A (en) * 1959-06-25 1963-12-10 Pellon Corp Methods and apparatus for the production of perforated non-woven fiber webs
US3010179A (en) 1959-11-18 1961-11-28 Alamac Knitting Mills Inc Method of treating pile fabrics
EP1069222A1 (fr) 1999-07-16 2001-01-17 Sächsisches Textilforschungsinstitut e.V. Procédé pour consolider des non-tissés fibreux et/ou filamentaires
WO2001053588A2 (fr) 2000-01-17 2001-07-26 Fleissner Gmbh & Co. Maschinenfabrik Procede et dispositif pour produire des non tisses composites par enchevetrement par eau
WO2001063032A1 (fr) 2000-02-24 2001-08-30 Fleissner Gmbh & Co. Maschinenfabrik Procede et dispositif de fabrication de non-tisses composites a l'aide de l'aiguilletage hydrodynamique
EP1553222A1 (fr) 2002-10-08 2005-07-13 Mitsubishi Rayon Engineering Co., Ltd. Ajutage concu pour former des jets de vapeur sous pression, et procede et appareil permettant de produire un non-tisse au moyen de cet ajutage

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