EP1900863A1 - Verfahren und Anlage zum Herstellen eines textilen Gebilde mit Zwischenlagen und Vorrichtung - Google Patents

Verfahren und Anlage zum Herstellen eines textilen Gebilde mit Zwischenlagen und Vorrichtung Download PDF

Info

Publication number
EP1900863A1
EP1900863A1 EP07291076A EP07291076A EP1900863A1 EP 1900863 A1 EP1900863 A1 EP 1900863A1 EP 07291076 A EP07291076 A EP 07291076A EP 07291076 A EP07291076 A EP 07291076A EP 1900863 A1 EP1900863 A1 EP 1900863A1
Authority
EP
European Patent Office
Prior art keywords
webs
web
layers
elementary
elemental
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.)
Withdrawn
Application number
EP07291076A
Other languages
English (en)
French (fr)
Inventor
Karim Behlouli
Francois Louis
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.)
Asselin Thibeau SAS
Original Assignee
Asselin Thibeau SAS
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 Asselin Thibeau SAS filed Critical Asselin Thibeau SAS
Publication of EP1900863A1 publication Critical patent/EP1900863A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G25/00—Lap-forming devices not integral with machines specified above
    • 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
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • 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

Definitions

  • the present invention relates to a method for manufacturing a textile having layers and interlays.
  • the present invention also relates to a device for implementing this method.
  • the present invention also relates to an installation for manufacturing a textile of the kind indicated at the beginning.
  • Such textiles are of interest when it comes to combining physical properties that are impossible to combine in a textile of a single nature, or when it comes to the cooperation between them the properties of two textile nature different, or to cooperate or coexist textile layers with interlayers that may be of a non-textile nature, such as a film.
  • the invention is particularly applicable to manufacture a textile in which layers of non-woven web such as a web from a card, and inter-layers formed of nanofibers or nanofilaments, whose diameter is typically between 50 nm and 1000 nm.
  • the object of the invention is to manufacture a textile of the kind indicated at the beginning in an efficient and economical manner.
  • the process for producing a textile having layers resulting from a fibrous web and intermediate layers is characterized in that a continuous sandwich is formed with an intermediate strip between two elementary nonwoven webs, and the web is the sandwich in a spreader-lapper.
  • the interlayer is held between the two elemental webs during the layering.
  • the topping is therefore carried out in a conventional manner, in principle without any particular precaution.
  • the intermediate layers are separated from each other by two adjacent layers of elemental sail.
  • the two elementary webs are manufactured in a card.
  • Many cards provide two elementary sails that are common to gather in a single sail at the entrance to the crosslapper.
  • the interlayer is placed between the two elementary veils before joining them and thus forming the sandwich of the invention.
  • This elemental veil serves as a support for the interlayer which can therefore be intrinsically very fragile, and in particular do not have a mechanical strength that would allow it to be manipulated separately.
  • the spacer strip may be formed by deposition of fibers against one side of one of the elementary webs, in particular electrostatically.
  • the device for implementing the method according to the first aspect is characterized in that it comprises for the formation of a spacer strip a production apparatus intended to be mounted downstream of a card and between spaced guiding paths for two elementary webs produced simultaneously by this card.
  • the installation for manufacturing a textile having layers derived from a fibrous web and intermediate layers comprises a card producing two elementary webs, means for guiding the two elementary webs along two pathways. first spaced, then joined, and a production apparatus according to the second aspect, placed between the two spaced paths.
  • the installation shown very schematically in Figure 1 comprises a card 3 equipped with a carding drum 31 cooperating with two cylindrical combers 11, 21, each associated with a respective detacher 12, 22 also cylindrical.
  • the drum 31 is rotated about its axis 32 in the direction of the arrow F3.
  • a peripheral lining of the drum 31 drives fibers which have been placed on this periphery and then oriented in essentially circumferential direction by means of known non-illustrated co-operating with the lining of the drum 31.
  • the rotary combers 11, 21 are arranged substantially one above on the other side near the descending side of the periphery of the drum 31.
  • Each dof 11, 21 collects on its own peripheral lining a certain thickness of fibers taken from the periphery of the drum 31.
  • Each of the rotary detachers 12 and 22 detaches from the doffer associated 11, 21, the collected fibers at the periphery of this doffer and deposited in the form of an elementary web 13, 23 on the corresponding one of two superimposed conveyor belts 14, 24.
  • Each elementary sail 13, 23 consists of individualized fibers not bonded together, and generally oriented substantially parallel to the longitudinal direction of the elementary web considered 13, 23.
  • the veil is extremely sparse because it contains a large amount of 'air. It is in the form of a continuous strip flowing in the direction of the arrows F1 (elemental sail 13) or respectively F2 (elemental sail 23).
  • the conveyor belt 24 associated with the lower elemental web 23 conducts the elemental web 23 to a zone 4 for grouping the elementary webs, where the continuous elementary webs are superimposed on one another.
  • the conveyor belt 14 associated with the upper elemental web 13 constitutes the beginning of a guiding and transport device which conducts the elementary web 13 of its detacher 12 to the grouping zone 4, along a path located at a certain distance above the path followed by the elemental sail 23 on the conveyor belt 24.
  • the aforementioned transport device further comprises the conveyor belt 14, a terminal conveyor belt 16 which leads the upper elemental web 13 to the grouping zone 4.
  • the conveyor belt 16 like the conveyor belts 14 and 24, carries the veil elementary associated on its outer face in the region where it is turned upwards. The associated elemental web thus rests on the conveyor belt by gravity.
  • the conveyor belts 14 and 24 have a horizontal carrier face to support the associated web 13, 23.
  • the conveyor belt 16 has a horizontal carrying face 17 in line with that of the conveyor belt 14, then an oblique bearing face 18 along which the elemental sail 13 follows a downward slope to reach the grouping zone 4.
  • the guide and transport device for the upper elemental web 13 further comprises an upper conveyor 7 comprising a porous conveyor belt 8, and a vacuum box 9 whose open side is adjacent to the inner face of the lower part of the porous conveyor belt 8. Said lower portion covers the end of the upper portion of the conveyor belt 14, the beginning of the horizontal portion 17 of the conveyor belt 16, as well as the entire space between the conveyor belts 14 and 16.
  • the elemental web approaching the downstream end of the carrying part of the conveyor belt 14 is sucked against the lower part of the conveyor belt 8 by virtue of the suction prevailing in the casing 9 and the pores of the conveyor belt 8.
  • the elemental web 13 continues to be guided along its path by being sucked against the outer and lower face of the conveyor belt 8.
  • the elementary web 13 reaches the horizontal carrying part 17 of the conveyor belt 16, it is deposited on it by gravity when it leaves the area subjected to the suction produced by the box 9.
  • the veil upper elementary element 13 continues its path resting on the horizontal parts 17 and inclined 18 of the conveyor belt 16. Leaving the conveyor belt 16 and more particularly the inclined bearing portion 18, the upper elemental web 13 is deposited on the lower elementary web 23 in the grouping area 4.
  • the device according to the invention further comprises an apparatus 41 for the formation of an intermediate layer 42 or interlayer between the two elementary webs 13 and 23.
  • the apparatus 41 is housed in the space 6 formed between the two webs 13, 23, downstream of the card 3 and upstream of the grouping zone 4.
  • the intermediate layer has the same width as each of the elementary webs 13, 23.
  • the intermediate layer is formed by a deposit against one of the elementary webs, on its side facing the other elemental sail.
  • the deposit is formed over the entire width of the elemental veil. Even more particularly, in this example, the deposit is formed against the lower face of the upper elemental web 13 in the zone where it is supported by suction against the lower part of the upper conveyor belt 8.
  • the apparatus 41 is an apparatus for the electrostatic deposition of nanofibers intended to form against the lower face of the upper elemental veil 13 a sort of nonwoven mat of nanofibers and / or nanofilaments.
  • a solution polymer is sprayed from a reserve, while establishing between the projection means and the receiving surface, that is to say the lower surface of the upper elemental sail 13 , a potential difference of, for example, 10,000 V.
  • the liquid jet or jets break up into very fine filaments much like a multiple electric arc in the air. These very fine filaments constitute the nanofibers or nanofilaments making up the interlayer to be produced.
  • FIG. 2A represents an elementary web 13 or 23 in the zone A1 or A2 respectively, just after the detachers 12, 22.
  • the upper elemental web 13 (FIG. 2B) has on its underside the intermediate layer 42 while the lower elementary web 23 is unchanged.
  • the sandwich web 47 formed by the grouping (FIG. 2C) comprises the intermediate layer 42 forming a continuous band between the two elementary webs 13, 23.
  • the two elementary webs 13, 23 and the intermediate layer or strip 42 have the same width and are exactly superimposed in the sandwich 47.
  • the grouping zone 4 substantially coincides with the entry into a crosslapper 43 (FIG. 3). It will be understood that Figure 3 should be viewed as the extension of Figure 1 on the right side thereof.
  • the crosslapper 43 is conventional in itself. It can be of any known type. The one represented corresponds substantially to EP 0 517 563 B2 . It comprises a front carpet 44 and a rear carpet 46. The web to be covered, hence here the sandwich web 47 of FIG. 2C, is deposited on the front carpet 44 which circulates along the arrow F4 and leads the web 47 to the roof. entry 48 of a nip 49 along which the web 47 is held between the two mats 44, 46.
  • the belt 46 flows in the direction indicated by the arrow F6 so that the speeds of the two mats are equal and same direction along the nip 49.
  • the nip 49 results in a lapping slot 51 formed between the two mats 44, 46 and carried by a lapping carriage 52 which moves back and forth according to the double arrow F7 above an output conveyor 53.
  • the upper bearing surface 54 of the conveyor 53 moves along the arrow F8 transversely to the longitudinal direction of the elementary webs 13 to 23.
  • the movement F7 back and forth of the lapper carriage is longitudinal ort to the elementary webs 13, 23 seen from above, and parallel to the width of the carrier surface 54 of the conveyor 53. Thanks to the movement of the carriage 52, the sandwich web 47 is deposited on the upper bearing surface 54 of the conveyor 53 in successive segments. , essentially transverse, interconnected by folds 55 which form the longitudinal edges of the web.
  • the segments are typically more numerous than those shown in FIG. 3 in order to simplify the latter.
  • the segments instead of being strictly transversal on the output conveyor 53, are in zig-zag and have oblique edges. 56 ( Figure 4).
  • the crosslapper 43 further comprises an accumulator carriage 57 ( Figure 3) which moves back and forth along the arrow F9 parallel to the reciprocating direction F7.
  • the purpose of moving the accumulator carriage 57 is to keep the length of the path of the sandwich web 47 constant or substantially constant between the entry in the crosslapper 43 and the deposition slot 51.
  • Each belt 44, 46 makes a turn to 180 ° on a respective auxiliary carriage 58, 59 which moves back and forth parallel to the lapper carriages 52 and accumulator 57 so that the developed length of the path followed by each of the front mats 44 and rear 46 is constant.
  • the resulting textile has the structure shown in section in FIG. 5, corresponding to a stack of sandwich webs 47 which have been turned once in one direction. (sail 13 on the top) and once in the other (veil 23 on the top) by the topping operation. There are therefore pairs of elementary sails 13, 13 or 23, 23. These pairs are separated from each other by the intermediate layers 42.
  • the product obtained at the exit of the lapping spreader may then undergo any appropriate subsequent treatment, for example a heat treatment and / or chemical and / or physicochemical for its mechanical stabilization and / or to confer one or more particular properties.
  • the invention is not limited to the example described and shown. It could also be formed in a space such as 6 between the two elementary webs an intermediate layer having a certain mechanical strength and which would come to join one and / or the other of the two elemental sails at a later stage of training of this interlayer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
EP07291076A 2006-09-15 2007-09-07 Verfahren und Anlage zum Herstellen eines textilen Gebilde mit Zwischenlagen und Vorrichtung Withdrawn EP1900863A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0608115A FR2905956A1 (fr) 2006-09-15 2006-09-15 Procede et installation pour fabriquer un textile comportant des intercouches, et dispositif s'y rapportant.

Publications (1)

Publication Number Publication Date
EP1900863A1 true EP1900863A1 (de) 2008-03-19

Family

ID=37907199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07291076A Withdrawn EP1900863A1 (de) 2006-09-15 2007-09-07 Verfahren und Anlage zum Herstellen eines textilen Gebilde mit Zwischenlagen und Vorrichtung

Country Status (2)

Country Link
EP (1) EP1900863A1 (de)
FR (1) FR2905956A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008083637A1 (en) * 2007-01-11 2008-07-17 Elmarco, S.R.O. Production method of layered sound absorptive non-woven fabric
CN101838887A (zh) * 2010-05-14 2010-09-22 东华大学 一种轻质柔性保暖间隔材料的成型装置及方法
CN101892599A (zh) * 2010-05-14 2010-11-24 东华大学 一种经编网固定羽绒絮片的成型装置和方法
WO2012049457A1 (en) 2010-10-13 2012-04-19 Eco Technilin Sas Fibre mats
WO2012059273A1 (de) * 2010-11-02 2012-05-10 Trützschler Nonwovens Gmbh Vliesbandleger und verfahren zum bilden eines vlieses
WO2013144748A1 (en) * 2012-03-28 2013-10-03 Lakshmi Machine Works Limited Web drafting assembly of carding machine
WO2020025640A1 (en) * 2018-07-30 2020-02-06 Swm Luxembourg Sarl Apparatus and method for making fibrous webs having isotropic structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH239576A (de) 1944-07-20 1945-10-31 Europaeische Holding Intercito Elektrische Gleichstromschweisseinrichtung.
FR2770855A1 (fr) 1997-11-07 1999-05-14 Asselin Procede et dispositif pour produire une nappe textile
WO2006108363A2 (en) 2005-04-11 2006-10-19 Elmarco, S.R.O Layered sound absorptive non-woven fabric

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH239576A (de) 1944-07-20 1945-10-31 Europaeische Holding Intercito Elektrische Gleichstromschweisseinrichtung.
FR2770855A1 (fr) 1997-11-07 1999-05-14 Asselin Procede et dispositif pour produire une nappe textile
WO2006108363A2 (en) 2005-04-11 2006-10-19 Elmarco, S.R.O Layered sound absorptive non-woven fabric

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008083637A1 (en) * 2007-01-11 2008-07-17 Elmarco, S.R.O. Production method of layered sound absorptive non-woven fabric
CN101838887A (zh) * 2010-05-14 2010-09-22 东华大学 一种轻质柔性保暖间隔材料的成型装置及方法
CN101892599A (zh) * 2010-05-14 2010-11-24 东华大学 一种经编网固定羽绒絮片的成型装置和方法
CN101838887B (zh) * 2010-05-14 2011-11-23 东华大学 一种轻质柔性保暖间隔材料的成型装置及方法
WO2012049457A1 (en) 2010-10-13 2012-04-19 Eco Technilin Sas Fibre mats
WO2012059273A1 (de) * 2010-11-02 2012-05-10 Trützschler Nonwovens Gmbh Vliesbandleger und verfahren zum bilden eines vlieses
CN103221592A (zh) * 2010-11-02 2013-07-24 特吕茨勒非织造布有限公司 形成非织造织物的非织造网铺设设备和方法
WO2013144748A1 (en) * 2012-03-28 2013-10-03 Lakshmi Machine Works Limited Web drafting assembly of carding machine
WO2020025640A1 (en) * 2018-07-30 2020-02-06 Swm Luxembourg Sarl Apparatus and method for making fibrous webs having isotropic structure
US11585018B2 (en) 2018-07-30 2023-02-21 Delstar Technologies, Inc. Fibrous webs having isotropic structure and apparatus and method for making same

Also Published As

Publication number Publication date
FR2905956A1 (fr) 2008-03-21

Similar Documents

Publication Publication Date Title
EP1900863A1 (de) Verfahren und Anlage zum Herstellen eines textilen Gebilde mit Zwischenlagen und Vorrichtung
EP1226297B1 (de) Verfahren zur herstellung eines vliesstoffes mit hydrodynamischer vernadelung
EP1117860B1 (de) Verfahren zur herstellung von komplexen vliesen und hergestellte vliese
FR2803604A1 (fr) Procede pour la realisation d'un materiau non tisse complexe et nouveau type de materiau ainsi obtenu
EP3347515A1 (de) Verfahren zur herstellung einer innenabdeckung, insbesondere eines bodenbelags für ein kraftfahrzeug
FR2662711A2 (fr) Procede de fabrication de nontisse.
FR2502199A1 (fr) Procede de conditionnement pour la fabrication de feutre aiguillete
EP2113041B1 (de) Vorrichtung und verfahren zur herstellung einer matte aus faser- oder filamentbasis
EP1300492B1 (de) Verfahren und Anlage zur Herstellung eines verdichteten Vliesstoffes und Vorrichtung zur Verdichtung eines Vliesstoffes
EP1798175B1 (de) Förderung einer vliesstoffbahn mittels einer förderbahn mit aufsteigendem förderteil und/oder veränderlicher geschwindigkeit
EP1589132B1 (de) Karde mit einer drehbaren Absaugübertragungsvorrichtung
EP1777182B1 (de) Verfahren und Vorrichtung zum Transport einer Bahn von Vliesstoff mit elektrostatischer Halterung der Bahn von Vliesstoff
FR2582296A1 (fr) Procede et dispositif de fabrication de produits en fibres de verre, tels que nappes, mats, files et meches
BE1005562A4 (fr) Procede et machine pour la production d'un voile de fibres.
WO2006084987A1 (fr) Carde et machine de production d'un non-tissé
EP1777187B1 (de) Verfahren und Anordnung zur Bildung einer Bahn aus mehrschichtigem Vliesstoff mit elektrostatischem Halten dieser Bahn aus Vliesstoff
EP1268905A2 (de) Vorrichtung zur verfestigung von vliesstoffbahnen durch flüssigkeitsstrahlen
EP1367165A1 (de) Saugwalze zur Behandlung eines textilen Faserbandes oder vergleichbares Produkt
FR3083806A1 (fr) Procede de formation d'une couche fibreuse pour une piece d'equipement de vehicule automobile, installation et piece d'equipement associees
WO2024023049A1 (fr) Dispositif tampon pour adapter la vitesse de sortie d'une nappe d'un etaleur nappeur a la vitesse d'entree d'un dispositif de traitement de la nappe en aval de l'etaleur nappeur
EP1702874A2 (de) Method and device of transporting a non-woven web with electrostatic charge in at least an area with a dimension smaller than the width of said web
EP1497488B1 (de) Vliesstoff mit teilweise verbundenen schichten sowie verfahren und vorrichtung zu dessen herstellung
FR2885620A1 (fr) Procede de production simultanee de deux nappes de fibres aiguilletees indivisualisees
FR2879628A1 (fr) Procede et dispositif de transport d'un non-tisse, et leur application au transport d'un non-tisse carde ou d'un non-tisse produit par voie aeraulique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20080825

17Q First examination report despatched

Effective date: 20081010

AKX Designation fees paid

Designated state(s): AT CH CZ DE FR IT LI

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20091211