EP0694644B2 - Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained - Google Patents

Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained Download PDF

Info

Publication number
EP0694644B2
EP0694644B2 EP94440050A EP94440050A EP0694644B2 EP 0694644 B2 EP0694644 B2 EP 0694644B2 EP 94440050 A EP94440050 A EP 94440050A EP 94440050 A EP94440050 A EP 94440050A EP 0694644 B2 EP0694644 B2 EP 0694644B2
Authority
EP
European Patent Office
Prior art keywords
filaments
manufacturing process
process according
sheet
nonwoven sheet
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.)
Expired - Lifetime
Application number
EP94440050A
Other languages
German (de)
French (fr)
Other versions
EP0694644A1 (en
EP0694644B1 (en
Inventor
Jean Baravian
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27236259&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0694644(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to FR9304919A priority Critical patent/FR2705698B1/en
Priority to US08/053,367 priority patent/US5355565A/en
Priority to DE69421612T priority patent/DE69421612T3/en
Priority claimed from ZA945637A external-priority patent/ZA945637B/en
Priority to EP94440050A priority patent/EP0694644B2/en
Priority to SI9430302T priority patent/SI0694644T1/en
Priority to DK94440050T priority patent/DK0694644T3/en
Priority to DE0694644T priority patent/DE694644T1/en
Priority to AT94440050T priority patent/ATE186578T1/en
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Priority to PT94440050T priority patent/PT694644E/en
Priority to ES94440050T priority patent/ES2141812T3/en
Publication of EP0694644A1 publication Critical patent/EP0694644A1/en
Publication of EP0694644B1 publication Critical patent/EP0694644B1/en
Application granted granted Critical
Priority to GR20000400294T priority patent/GR3032596T3/en
Publication of EP0694644B2 publication Critical patent/EP0694644B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4391—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres
    • D04H1/43918—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres nonlinear fibres, e.g. crimped or coiled fibres
    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • 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
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/018—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the shape
    • 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

Definitions

  • the present invention relates to the field of the production of nonwoven webs or strips, in continuous filaments obtained by spinning polymers with the molten state, and relates to a manufacturing process a nonwoven web made of continuous filaments linked together, as well as a sheet thus obtained.
  • These current binding methods consist of treat by jets of fluids, in particular by water jet under high pressure, nonwovens obtained by techniques such as wet or dry (by carding mechanical or pneumatic of fibers from 20 up 80 mm in length).
  • the wet process uses short fibers and flat, rarely exceeding 20 mm in length.
  • the dry process uses fibers generally curly, which greatly facilitates the realization single sails, the length of which can range up to 80 mm.
  • the high mobility of the cut fibers moved by the action of the jets, allows a rearrangement of the structure by sliding of all or part of the fibers in the direction of the lines of force exercised perpendicular to the plane of the sheet.
  • the subject of the present invention is in particular to overcome these drawbacks.
  • nonwoven web made up of filaments continuous linked together, characterized in that it consists making a nonwoven web from filaments biconstituents having a crimp, then to subject said ply to high pressure fluid jets, including mechanical action leads to a tangle and a interlacing of crimped filaments constituting said tablecloth.
  • Figure 1 shows schematically the deformation of a flat wire under the action of a jet of fluid according to conventional processes
  • Figure 2 shows schematically the deformation a crimped wire under the action of a jet of fluid in accordance to the process according to the invention.
  • the manufacturing process consists, first of all, of making a sheet of nonwoven from biconstituted filaments having crimping, then subjecting said sheet to jets of fluid under high pressure, the mechanical action of which results entanglement and intertwining of filaments crimps constituting said tablecloth.
  • the effect of the jet of fluid on filaments curly is significantly more effective than on filaments rectilinear.
  • the intensity of the tangle and the intertwining of biconstitued continuous filaments curly, and therefore the quality and solidity of the connection between said crimped filaments of nonwoven webs, are very much higher than those obtained for straight or rectilinear continuous filaments, this for an amount of energy expended during tying, identical.
  • the biconstituted and crimped filaments, constituting the nonwoven web have a bimetallic structure comprising two elementary filamentary components consisting of two different polymers.
  • nonwoven fabric composed continuous curly filaments, with bimetal structure can in particular be carried out according to the method described in the French deposit n ° 83 08770, leading to a spontaneous, intense and stable curling due to behavior asymmetric filaments during cooling by air or during stretching.
  • Biconstituent filaments comprising two filamentary components side by side, are advantageously composed of two different polymers, particularly in the form of a combination, a part, of a polyamide chosen from the group formed by polyamide 66, polyamide 6 and polyamide 11 and, on the other hand, of a polyester chosen from the group formed by polyethylene terephthalate, polybutylene terephthalate and the copolyester.
  • polyester-polypropylene pairs polyamide-polypropylene, pairs of two types of different polyamides or couples of polyester different, such as polyethylene terephthalate and polybutylene terephthalate, also very suitable well to get bimetallic structures leading to a spontaneous crimp.
  • the proportions of the two polymers, constituting the bimetal wire can vary in proportions notable from 95/5 to 5/95.
  • the relative proportions of both of the constituents influence the quality and intensity of the crimp.
  • the adjustment of this proportion of the one and the other constituent is one of means for regulating the crimping of the filaments.
  • filaments can be obtained by various known spinning / extrusion processes and present, in addition to a circular section, various sections such as, for example, trilobed, quadrangular sections, or in the form of croissants or quarters.
  • the latter can, if necessary, be increased by additional chemical treatments, such as those described in the aforementioned deposit or treatments physical such as heat treatment causing differential withdrawals on each of the polymers.
  • the process can advantageously consist, in the case of filamentary components elementals made of incompatible polymers, to be submitted, via the fluid jets, the filaments of the nonwoven web with mechanical action the intensity of which is such that said filaments are dissociated into their elementary filamentary components, the latter then being intertwined and entangled under the effect of said jets of fluid.
  • separation or complete dissociation of said filament is effective under the action of high pressure water jets and thus makes it possible to obtain, for example, from a filament biconstituent of 2 dtex, two filaments of 1 dtex separated.
  • the titer of the filaments biconstituents used is less than 4 dtex, said filaments having a crimp frequency of 3 to 30 crimps per centimeter, preferably 8 to 20 crimps per centimeter and a crimp rate of 50 to 400%.
  • crimp means in this specification the ripple in space of a wire or filament and can be defined numerically by the values of the crimp frequency, designating the number of crimps per unit of yarn or filament length, and the rate of crimp indicating, in percentage, the difference between the straightened length and crimped length of the wire or filament related to the straightened length of the latter or of this last.
  • the nonwoven web produced using biconstituted and crimped filaments has a weight of 10 to 400 g / m 2 , preferably 20 to 200 g / m 2 .
  • the fluid jets consist of water jets applied under a pressure of 140 x 10 5 Pa to 300 x 10 5 Pa, said jets being applied to the two faces of the non-woven sheet. -woven.
  • Nozzles for generation of fluid jets may advantageously have a diameter of orifices ejection range between 100 ⁇ m and 250 ⁇ m, said nozzles being grouped on bars, arranged on one or more rows, with a spacing between ejection ports preferably between 0.2 and 1.2 mm.
  • the fabrics supporting the nonwoven, during the treatment of binding consist of metallic filaments or synthetic material and their type of structure and the tightening of the mesh conditions the appearance of the nonwoven after treatment, as well as the dimensions and the nozzle spacing.
  • the fabrics supporting the nonwoven web when applying fluid jets consist of tight metal fabrics from 80 to 120 mesh.
  • the working speed possibilities depend on the titer of the filaments, their Young's modulus, their sensitivity to water, the weight / m 2 of the nonwoven, of course the energy available per unit area, and finally of the desired binding effect. They can be located between 10 and 100 m / min or even more for very light sheets.
  • the subject of the invention is also a tablecloth. nonwoven, obtained by the process described above, and composed of either continuous biconstituted filaments having a crimp, said ply having a linked structure resulting from a tangle and a intense interlacing of said filaments, ie of filaments continuous, tangled and interwoven curly, consistent in two different materials and obtained by dissociation of continuous biconstituted filaments with a structure bimetal.
  • the sheets thus treated have, of a part, the properties of nonwovens of continuous filaments, such as breaking strength levels, with very high tear and punch, but also, on the other hand, flexibility, drape, opacity and the property called "lintfree", that is to say not to have of free fibers or fibrils, which is an advantage considerable in medical applications and surgical such as dressings, surgical drape, medical coats or the like, and provides high resistance to friction and household washing. These properties can be further improved by the standard finishing treatments of the textile industry.
  • finishing treatments textiles such as dyeing, printing by transfer methods, pigment printing or fixed-washed, scraping or emery treatment or the like.
  • tablecloth applications thus obtained can also extend to other textile applications such as furniture (draperies, wall coverings, clothing in the traditional flannelized or felted aspects, seat or bed coverings, blankets, etc )., the coating supports (shoe, leather goods, luggage, interior car trim, etc %) or synthetic suede or coated leathers obtained by impregnating flexible binders or by example of coagulated polyurethanes.
  • furniture draperies, wall coverings, clothing in the traditional flannelized or felted aspects, seat or bed coverings, blankets, etc
  • the coating supports shoe, leather goods, luggage, interior car trim, etc
  • synthetic suede or coated leathers obtained by impregnating flexible binders or by example of coagulated polyurethanes.
  • the sheet of 110 g / m 2 thus obtained consisting of bicomponent filaments and whose spontaneous crimp, revealed on receipt on the receiving apron, is 16 crimps / cm, is then transported at a speed of 12 m / minute up to to a water jet binding device fitted with a 100 mesh metallic transport fabric with an opening of 25%.
  • the binding device makes it possible to successively treat the nonwoven on one face, then the other, using two sets of four rows (bars) of jets spaced apart from each other by 0.6 mm.
  • the nozzle orifices have a diameter of 100 ⁇ and the pressures of the water jets of each of the rows are successively 160 - 220 - 140 - 140 x 10 5 Pa on the first assembly and on one side, the same for the second set on the other side of the tablecloth.
  • the tablecloth after spinning, is dried on a air-through drum at a temperature of 160 ° C.
  • the tablecloth obtained has a very soft touch and is very flexible.
  • the breaking load as well as the energy of rupture of the water table, measured according to the AFNOR standard GO7OO1, the initiated tear resistance, measured according to AFNOR GO7055 standard and resistance to bursting, according to standard AFNOR GO7112 are at a very high level; flexural stiffness is achieved according to ISO / TC.94 / SC 1139 F 3/70.
  • the table below shows the different characteristics, on the one hand, of a nonwoven web (A) made of continuous and crimped filaments with structure polyamide 6.6 / polyethylene terephthalate bimetallic strip (50/50) of 1.5 dtex linked by pressurized water jets according to the method described above, and, on the other hand, a nonwoven web (B) made of monolame filaments, continuous and non-curly, of 1.5 dtex, and composed of polyester polyethylene terephthalate.
  • A nonwoven web
  • A made of continuous and crimped filaments with structure polyamide 6.6 / polyethylene terephthalate bimetallic strip (50/50) of 1.5 dtex linked by pressurized water jets according to the method described above
  • a nonwoven web (B) made of monolame filaments, continuous and non-curly, of 1.5 dtex, and composed of polyester polyethylene terephthalate.

Abstract

Non-woven sheet of continuous interconnected filaments is produced from bi-constituted filaments of less than 4 dtex comprising two interconnected elemental filament components of different polymers. Differential shrinkage is imparted to the filaments to produce a curl frequency of 3-30 curls per cm., 50-400 percent filament bunching and formation of a non-woven sheet weighing 10-400 grams per metre. The sheet is subjected to water jets at a pressure of 50-300 X 10 Pa to interface and entangle the curled filaments and separate the interconnected elemental filament components from each other. The resulting non-woven sheet is specifically claimed. <IMAGE>

Description

La présente invention concerne le domaine de la réalisation de nappes ou de bandes de non-tissé, en filaments continus obtenus par filage de polymères à l'état fondu, et a pour objet un procédé de fabrication d'une nappe de non-tissé constituée de filaments continus liés entre eux, ainsi qu'une nappe ainsi obtenue.The present invention relates to the field of the production of nonwoven webs or strips, in continuous filaments obtained by spinning polymers with the molten state, and relates to a manufacturing process a nonwoven web made of continuous filaments linked together, as well as a sheet thus obtained.

Parmi les techniques actuelles de liage de filaments, il existe notamment le liage par jets de fluide tels des jets d'air, de vapeur d'eau, de solutions acqueuses diverses ou encore de jets d'eau sous haute pression.Among the current filament tying techniques, there is in particular the binding by fluid jets such as air jets, water vapor, aqueous solutions various or high pressure water jets.

Ces procédés de liage actuels consistent à traiter par jets de fluides, notamment par jet d'eau sous haute pression, les non-tissés obtenus par des techniques telles que la voie humide ou la voie sèche (par cardage mécanique ou pneumatique de fibres de 20 jusqu'à 80 mm de longueur).These current binding methods consist of treat by jets of fluids, in particular by water jet under high pressure, nonwovens obtained by techniques such as wet or dry (by carding mechanical or pneumatic of fibers from 20 up 80 mm in length).

La voie humide fait appel à des fibres courtes et plates, de longueur dépassant rarement 20 mm.The wet process uses short fibers and flat, rarely exceeding 20 mm in length.

La voie sèche, quant à elle, utilise des fibres généralement frisées, ce qui facilite grandement la réalisation de voiles unitaires, dont la longueur peut aller jusqu'à 80 mm.The dry process, on the other hand, uses fibers generally curly, which greatly facilitates the realization single sails, the length of which can range up to 80 mm.

Ces deux procédés de formation de nappes de non-tissés font le plus souvent appel à des mélanges de fibres synthétiques, avec ajout éventuel de fibres artificielles ou naturelles. Les fibres naturelles ou artificielles, souvent d'origine cellulosique, permettent, par leur présence, un meilleur rendement du liage par jets d'eau sous pression du fait de leur sensibilité à cet élément.These two processes for forming layers of non-wovens most often use blends synthetic fibers, with possible addition of artificial fibers or natural. Natural or artificial fibers, often of cellulosic origin, allow, by their presence, better yield of binding by water jets under pressure due to their sensitivity to this element.

Par ailleurs, la grande mobilité des fibres coupées, déplacées sous l'action des jets, permet un réaménagement de la structure par glissement de tout ou partie des fibres dans la direction des lignes de forces exercées perpendiculairement au plan de la nappe.Furthermore, the high mobility of the cut fibers, moved by the action of the jets, allows a rearrangement of the structure by sliding of all or part of the fibers in the direction of the lines of force exercised perpendicular to the plane of the sheet.

Mais ces procédés de traitement des non-tissés par jets de fluides, lorsque lesdits non-tissés sont formés de filaments continus et rectilignes de polymères synthétiques, s'opèrent très difficilement, du fait de la continuité même des filaments qui représente un frein à leur mobilité, rend leur enchevêtrement très malaisé et nécessite des pressions de jets très élevées, supérieures à 200 x 105 Pa pour un résultat de liage médiocre, à savoir une nappe de non-tissé ne présentant pas de caractéristiques améliorées ou de propriétés supplémentaires avantageuses par rapport aux nappes de non-tissés en filaments continus traditionnelles.However, these methods of treating nonwovens by jets of fluids, when said nonwovens are formed from continuous and rectilinear filaments of synthetic polymers, operate very with difficulty, due to the very continuity of the filaments which represents a brake on their mobility, makes their entanglement very difficult and requires very high jet pressures, greater than 200 × 10 5 Pa for a poor bonding result, namely a nonwoven web having no improved characteristics or advantageous additional properties by compared to traditional continuous filament nonwoven webs.

La présente invention a notamment pour objet de pallier ces inconvénients.The subject of the present invention is in particular to overcome these drawbacks.

Elle a, en effet, pour objet un procédé de fabrication d'une nappe de non-tissé constituée de filaments continus liés entre eux, caractérisé en ce qu'il consiste à réaliser une nappe de non-tissé à partir de filaments biconstitués présentant une frisure, puis à soumettre ladite nappe à des jets de fluide sous haute pression, dont l'action mécanique entraíne un enchevêtrement et un entrelacement des filaments frisés constituant ladite nappe.It has, in fact, for a manufacturing process a nonwoven web made up of filaments continuous linked together, characterized in that it consists making a nonwoven web from filaments biconstituents having a crimp, then to subject said ply to high pressure fluid jets, including mechanical action leads to a tangle and a interlacing of crimped filaments constituting said tablecloth.

L'invention sera mieux comprise grâce à la description ci-après, qui se rapporte à un mode de réalisation préféré, donné à titre d'exemple non limitatif, et expliqué avec référence aux dessins schématiques, dans lesquels :The invention will be better understood thanks to the description below, which relates to an embodiment preferred, given by way of nonlimiting example, and explained with reference to schematic drawings, wherein :

la figure 1 représente schématiquement la déformation d'un fil plat sous l'action d'un jet de fluide selon les procédés classiques, etFigure 1 shows schematically the deformation of a flat wire under the action of a jet of fluid according to conventional processes, and

la figure 2 représente schématiquement la déformation d'un fil frisé sous l'action d'un jet de fluide conformément au procédé selon l'invention.Figure 2 shows schematically the deformation a crimped wire under the action of a jet of fluid in accordance to the process according to the invention.

Conformément à l'invention, le procédé de fabrication consiste, tout d'abord, à réaliser une nappe de non-tissé à partir de filaments biconstitués présentant une frisure, puis à soumettre ladite nappe à des jets de fluide sous haute pression, dont l'action mécanique entraíne un enchevêtrement et un entrelacement des filaments frisés constituant ladite nappe.In accordance with the invention, the manufacturing process consists, first of all, of making a sheet of nonwoven from biconstituted filaments having crimping, then subjecting said sheet to jets of fluid under high pressure, the mechanical action of which results entanglement and intertwining of filaments crimps constituting said tablecloth.

Comme le montrent les figures 1 et 2 des dessins annexés, la déformation maximale d'un élément filamentaire composé d'un filament frisé (figure 2) est nettement plus importante que celle d'un élément filamentaire composé d'un filament rectiligne, plat ou droit (figure 1), ce pour des éléments présentant des distances entre leurs extrémités identiques.As shown in Figures 1 and 2 of the drawings annexed, the maximum deformation of a filamentary element composed of a crimped filament (figure 2) is clearly more important than that of a filamentary element composed of a straight, flat or straight filament (figure 1), for elements with distances between their identical ends.

En outre, la force nécessaire pour le déplacement ou la déformation d'un tel filament frisé est inférieure à celle nécessaire pour un filament rectiligne, pour un résultat similaire.In addition, the force required for displacement or the deformation of such a crimped filament is less to that necessary for a straight filament, for a similar result.

De plus, l'effet du jet de fluide sur des filaments frisés est nettement plus efficace que sur des filaments rectilignes.In addition, the effect of the jet of fluid on filaments curly is significantly more effective than on filaments rectilinear.

Par conséquent, l'intensité de l'enchevêtrement et de l'entrelacement des filaments continus biconstitués frisés, et donc la qualité et la solidité de la liaison entre lesdits filaments frisés de nappes de non-tissé, sont très nettement supérieures à celles obtenues pour des filaments continus droits ou rectilignes, ce pour une quantité d'énergie dépensée, au cours du liage, identique.Therefore, the intensity of the tangle and the intertwining of biconstitued continuous filaments curly, and therefore the quality and solidity of the connection between said crimped filaments of nonwoven webs, are very much higher than those obtained for straight or rectilinear continuous filaments, this for an amount of energy expended during tying, identical.

Selon une première caractéristique de l'invention, les filaments biconstitués et frisés, constituant la nappe de non-tissé, présentent une structure bilame comprenant deux composantes filamentaires élémentaires consistant en deux polymères différents.According to a first characteristic of the invention, the biconstituted and crimped filaments, constituting the nonwoven web, have a bimetallic structure comprising two elementary filamentary components consisting of two different polymers.

La réalisation d'une nappe de non-tissé composée de filaments continus frisés, à structure bilame, peut notamment être effectuée selon le procédé décrit dans le dépôt français n° 83 08770, conduisant à une frisure spontanée, intense et stable du fait du comportement asymétrique des filaments lors de leur refroidissement par air ou au cours de leur étirage.The production of a nonwoven fabric composed continuous curly filaments, with bimetal structure, can in particular be carried out according to the method described in the French deposit n ° 83 08770, leading to a spontaneous, intense and stable curling due to behavior asymmetric filaments during cooling by air or during stretching.

Les filaments biconstitués comprenant deux composantes filamentaires côte-à-côte, sont avantageusement composés de deux polymères différents, sous la forme notamment d'une combinaison, d'une part, d'un polyamide choisi dans le groupe formé par le polyamide 66, le polyamide 6 et le polyamide 11 et, d'autre part, d'un polyester choisi dans le groupe formé par le polyéthylène terephtalate, le polybutylène terephtalate et le copolyester.Biconstituent filaments comprising two filamentary components side by side, are advantageously composed of two different polymers, particularly in the form of a combination, a part, of a polyamide chosen from the group formed by polyamide 66, polyamide 6 and polyamide 11 and, on the other hand, of a polyester chosen from the group formed by polyethylene terephthalate, polybutylene terephthalate and the copolyester.

Toutefois, des couples polyester-polypropylène, polyamide-polypropylène, des couples de deux types de polyamides différents ou des couples de polyester différents, tels que le polyterephtalate d'étylène et le polybutylène terephtalate, conviennent également très bien pour obtenir des structures bilames conduisant à une frisure spontanée.However, polyester-polypropylene pairs, polyamide-polypropylene, pairs of two types of different polyamides or couples of polyester different, such as polyethylene terephthalate and polybutylene terephthalate, also very suitable well to get bimetallic structures leading to a spontaneous crimp.

Les proportions des deux polymères, constituant le fil bilame, peuvent varier dans des proportions notables de 95/5 à 5/95. Les proportions relatives de l'un et l'autre des constituants influent d'ailleurs sur la qualité et l'intensité de la frisure. L'ajustement de cette proportion de l'un et l'autre constituant est l'un des moyens de régulation de la frisure des filaments.The proportions of the two polymers, constituting the bimetal wire, can vary in proportions notable from 95/5 to 5/95. The relative proportions of both of the constituents influence the quality and intensity of the crimp. The adjustment of this proportion of the one and the other constituent is one of means for regulating the crimping of the filaments.

Ces filaments peuvent être obtenus par divers procédés connus de filage / extrusion et présenter, outre une section circulaire, des sections variées telles que, par exemple, des sections trilobées, quadrangulaires, ou encore en forme de croissants ou de quartiers.These filaments can be obtained by various known spinning / extrusion processes and present, in addition to a circular section, various sections such as, for example, trilobed, quadrangular sections, or in the form of croissants or quarters.

Pour ces différentes formes de filaments, il est à chaque fois essentiel de faire intervenir simultanément l'asymétrie et la différenciation du comportement physique des deux composantes élémentaires lors des phases de refroidissement et d'étirage du filament biconstitué, en vue d'obtenir la frisure.For these different forms of filaments, it is each time essential to involve simultaneously asymmetry and differentiation of behavior physics of the two elementary components during cooling and stretching phases of the biconstituted filament, in order to obtain the crimp.

Cette dernière peut, le cas échéant, être accrue par des traitements chimiques supplémentaires, tels que ceux décrits dans le dépôt précité ou des traitements physiques tels que traitement thermique provoquant des retraits différentiels sur chacun des polymères.The latter can, if necessary, be increased by additional chemical treatments, such as those described in the aforementioned deposit or treatments physical such as heat treatment causing differential withdrawals on each of the polymers.

Conformément à un mode de réalisation préféré de l'invention, le procédé peut avantageusement consister, dans le cas de composantes filamentaires élémentaires réalisées en des polymères incompatibles, à soumettre, par l'intermédiaire des jets de fluide, les filaments de la nappe de non-tissé à une action mécanique dont l'intensité est telle que lesdits filaments sont dissociés en leurs composantes filamentaires élémentaires, ces dernières étant ensuite entrelacées et enchevêtrées sous l'effet desdits jets de fluide.According to a preferred embodiment of the invention, the process can advantageously consist, in the case of filamentary components elementals made of incompatible polymers, to be submitted, via the fluid jets, the filaments of the nonwoven web with mechanical action the intensity of which is such that said filaments are dissociated into their elementary filamentary components, the latter then being intertwined and entangled under the effect of said jets of fluid.

Dans le cas, par exemple, d'un filament bilame à une composante en polyéthylène terephtalate et une composante en polyhexaméthylène adipamide, la séparation ou dissociation complète dudit filament est effective sous l'action de jets d'eau sous haute pression et permet ainsi d'obtenir, par exemple, à partir d'un filament biconstitué de 2 dtex, deux filaments de 1 dtex séparés.In the case, for example, of a bimetallic filament with a polyethylene terephthalate component and a polyhexamethylene adipamide component, separation or complete dissociation of said filament is effective under the action of high pressure water jets and thus makes it possible to obtain, for example, from a filament biconstituent of 2 dtex, two filaments of 1 dtex separated.

Cet abaissement du titre des filaments participe aussi à l'obtention d'une meilleure réaction du réseau fibreux à l'action mécanique des jets d'eau améliorant l'enchevêtrement.This lowering of the title of the filaments contributes also to obtain a better network reaction fibrous to the mechanical action of water jets improving entanglement.

De manière avantageuse, le titre des filaments biconstitués utilisés est inférieur à 4 dtex, lesdits filaments comportant une fréquence de frisure de 3 à 30 frisures par centimètre, préférentiellement 8 à 20 frisures par centimètre et un taux de frisure de 50 à 400 %.Advantageously, the titer of the filaments biconstituents used is less than 4 dtex, said filaments having a crimp frequency of 3 to 30 crimps per centimeter, preferably 8 to 20 crimps per centimeter and a crimp rate of 50 to 400%.

Le terme frisure désigne dans le présent mémoire l'ondulation dans l'espace d'un fil ou d'un filament et peut être défini numériquement par les valeurs de la fréquence de frisure, désignant le nombre de frisures par unité de longueur de fil ou de filament, et du taux de frisure indiquant, en pourcentage, la différence entre la longueur défrisée et la longueur frisée du fil ou filament rapportée à la longueur défrisée de ce dernier ou de cette dernière.The term crimp means in this specification the ripple in space of a wire or filament and can be defined numerically by the values of the crimp frequency, designating the number of crimps per unit of yarn or filament length, and the rate of crimp indicating, in percentage, the difference between the straightened length and crimped length of the wire or filament related to the straightened length of the latter or of this last.

De plus, la nappe de non-tissé réalisée au moyen de filaments biconstitués et frisés présente un poids de 10 à 400 g/m2, préférentiellement de 20 à 200 g/m2.In addition, the nonwoven web produced using biconstituted and crimped filaments has a weight of 10 to 400 g / m 2 , preferably 20 to 200 g / m 2 .

Selon une autre caractéristique de l'invention, les jets de fluide consistent en des jets d'eau appliqués sous une pression de 140 x 105 Pa à 300 x 105 Pa, lesdits jets étant appliqués sur les deux faces de la nappe de non-tissé.According to another characteristic of the invention, the fluid jets consist of water jets applied under a pressure of 140 x 10 5 Pa to 300 x 10 5 Pa, said jets being applied to the two faces of the non-woven sheet. -woven.

Les buses pour la génération des jets de fluide pourront présenter avantageusement un diamètre d'orifices d'éjection compris entre 100 µm et 250 µm, lesdites buses étant regroupées sur des barettes, disposées sur une ou plusieurs rangées, avec un espacement entre orifices d'éjection préférentiellement compris entre 0,2 et 1,2 mm.Nozzles for generation of fluid jets may advantageously have a diameter of orifices ejection range between 100 µm and 250 µm, said nozzles being grouped on bars, arranged on one or more rows, with a spacing between ejection ports preferably between 0.2 and 1.2 mm.

Les toiles supportant le non-tissé, lors du traitement de liage, sont constituées de filaments métalliques ou en matière synthétique et leur type de structure et le serrage des mailles conditionnent l'aspect du non-tissé après le traitement, de même que les dimensions et l'écartement des buses.The fabrics supporting the nonwoven, during the treatment of binding, consist of metallic filaments or synthetic material and their type of structure and the tightening of the mesh conditions the appearance of the nonwoven after treatment, as well as the dimensions and the nozzle spacing.

On obtient ainsi soit des produits ajourés avec un motif prédéterminé et un maillage de grande dimension, soit des produits avec un aspect maillé ou flanelle et un maillage serré.We thus obtain either openwork products with a predetermined pattern and a large mesh, either products with a mesh or flannel look and a tight mesh.

Dans ce dernier cas, les toiles supportant la nappe de non-tissé lors de l'application des jets de fluide consistent en des toiles métalliques serrées de 80 à 120 mesh.In the latter case, the fabrics supporting the nonwoven web when applying fluid jets consist of tight metal fabrics from 80 to 120 mesh.

Les possibilités de vitesse de travail dépendent du titre des filaments, de leur module de Young, de leur sensibilité à l'eau, du poids/m2 du non-tissé, bien entendu de l'énergie disponible par unité de surface, et enfin de l'effet de liaison souhaité. Elles peuvent être situées entre 10 et 100 m/mn voire plus pour les nappes très légères.The working speed possibilities depend on the titer of the filaments, their Young's modulus, their sensitivity to water, the weight / m 2 of the nonwoven, of course the energy available per unit area, and finally of the desired binding effect. They can be located between 10 and 100 m / min or even more for very light sheets.

L'invention a également pour objet une nappe de non-tissé, obtenue au moyen du procédé décrit ci-dessus, et composée, soit de filaments continus biconstitués comportant une frisure, ladite nappe présentant une structure liée résultant d'un enchevêtrement et d'un entrelacement intenses desdits filaments, soit de filaments continus frisés enchevêtrés et entrelacés, consistant en deux matériaux différents et obtenus par dissociation de filaments continus biconstitués à structure bilame.The subject of the invention is also a tablecloth. nonwoven, obtained by the process described above, and composed of either continuous biconstituted filaments having a crimp, said ply having a linked structure resulting from a tangle and a intense interlacing of said filaments, ie of filaments continuous, tangled and interwoven curly, consistent in two different materials and obtained by dissociation of continuous biconstituted filaments with a structure bimetal.

Les nappes ainsi traitées possèdent, d'une part, les propriétés des non-tissés de filaments continus, telles que des niveaux de résistance à la rupture, à la déchirure et au poinçonnement très élevés, mais également, d'autre part, la souplesse, le drapé, l'opacité et la propriété dite "lintfree", c'est-à-dire de ne pas avoir de fibres ou de fibrilles libres, ce qui représente un avantage considérable dans les applications médicales et chirurgicales telles que pansements, champ opératoire, blouses médicales ou analogues, et permet d'obtenir une résistance au frottement et au lavage ménager élevée. Ces propriétés peuvent encore être améliorées par les traitements d'apprêts classiques de l'industrie textile.The sheets thus treated have, of a part, the properties of nonwovens of continuous filaments, such as breaking strength levels, with very high tear and punch, but also, on the other hand, flexibility, drape, opacity and the property called "lintfree", that is to say not to have of free fibers or fibrils, which is an advantage considerable in medical applications and surgical such as dressings, surgical drape, medical coats or the like, and provides high resistance to friction and household washing. These properties can be further improved by the standard finishing treatments of the textile industry.

De même on pourra effectuer avantageusement selon les applications, des traitements d'ennoblissement textile tels que la teinture, l'impression par les méthodes de transfert, de l'impression pigmentaire ou fixée-lavée, les traitements de grattage ou d'émerisage ou similaires.Likewise, we can advantageously perform depending on the applications, finishing treatments textiles such as dyeing, printing by transfer methods, pigment printing or fixed-washed, scraping or emery treatment or the like.

Outre les applications médicales citées, les applications de nappes ainsi obtenues peuvent aussi s'étendre à d'autres applications textiles telles que l'ameublement (tentures, revêtements muraux, habillement dans les aspects traditionnels flanellisés ou feutrés, revêtements de sièges ou de literie, couvertures, etc ...), les supports d' d'enduction (chaussure, maroquinerie, bagagerie, l'habillage intérieur automobile, etc ...) ou encore les cuirs synthétiques suèdés ou enduits obtenus par imprégnation de liants souples ou par exemple des polyuréthanes coagulés.In addition to the medical applications cited, tablecloth applications thus obtained can also extend to other textile applications such as furniture (draperies, wall coverings, clothing in the traditional flannelized or felted aspects, seat or bed coverings, blankets, etc ...), the coating supports (shoe, leather goods, luggage, interior car trim, etc ...) or synthetic suede or coated leathers obtained by impregnating flexible binders or by example of coagulated polyurethanes.

La présente invention sera avantageusement illustrée par l'exemple décrit ci-après.The present invention will advantageously illustrated by the example described below.

On réalise, par le procédé et au moyen du dispositif faisant l'objet du document FR 74 20254, une nappe non-tissée de 110 g/m2 dans les conditions suivantes :

  • extrusion de filaments de 1,5 dtex, chacun constitué de deux composantes filamentaires, l'une en polyester (polyterephtalate d'éthylène glycol) et l'autre en polyamide (polyhexaméthylène adipamide) en position côte-côte et en proportion 50/50 en volume ;
  • étirage dans une buse pneumatique avec une pression d'air de 3,2 x 105 Pa, située à 125 cm de la filière ;
  • dépôt des filaments sur un tablier sans fin récepteur en utilisant le procédé dit "travelling" décrit dans FR 74 20254.
A nonwoven web of 110 g / m 2 is produced by the method and by means of the device which is the subject of document FR 74 20254, under the following conditions:
  • extrusion of 1.5 dtex filaments, each made up of two filamentary components, one made of polyester (polyethylene terephthalate glycol) and the other made of polyamide (polyhexamethylene adipamide) in side-by-side position and in 50/50 proportion volume;
  • drawing in a pneumatic nozzle with an air pressure of 3.2 x 10 5 Pa, located 125 cm from the die;
  • depositing the filaments on an endless receiving apron using the so-called "traveling" method described in FR 74 20254.

La nappe de 110 g/m2 ainsi obtenue, constituée de filaments bicomposés et dont la frisure spontanée, révélée dès la réception sur le tablier récepteur, est de 16 frisures/cm, est alors transportée à une vitesse de 12 m/minute jusqu'à un dispositif de liage par jet d'eau muni d'une toile métallique de transport de 100 mesh avec une ouverture de 25 %.The sheet of 110 g / m 2 thus obtained, consisting of bicomponent filaments and whose spontaneous crimp, revealed on receipt on the receiving apron, is 16 crimps / cm, is then transported at a speed of 12 m / minute up to to a water jet binding device fitted with a 100 mesh metallic transport fabric with an opening of 25%.

Le dispositif de liage permet de traiter successivement le non-tissé sur une face, puis l'autre, à l'aide de deux ensembles de quatre rangées (barettes) de jets espacés les uns des autres de 0.6 mm. Les orifices des buses ont un diamètre de 100 µ et les pressions des jets d'eau de chacune des rangées sont successivement de 160 - 220 - 140 - 140 x 105 Pa sur le premier ensemble et sur une face, de même pour le second ensemble situé sur l'autre face de la nappe.The binding device makes it possible to successively treat the nonwoven on one face, then the other, using two sets of four rows (bars) of jets spaced apart from each other by 0.6 mm. The nozzle orifices have a diameter of 100 μ and the pressures of the water jets of each of the rows are successively 160 - 220 - 140 - 140 x 10 5 Pa on the first assembly and on one side, the same for the second set on the other side of the tablecloth.

La nappe, après essorage, est séchée sur un tambour à air traversant, à une température de 160°C.The tablecloth, after spinning, is dried on a air-through drum at a temperature of 160 ° C.

Il a été noté que la soumission de la nappe, lors de l'opération de séchage, à une ambiance chaude et humide a généralement une action accentuant la frisure des filaments au sein du non-tissé, surtout si ceux-ci ont été imparfaitement séparés en constituants unitaires par l'action des jets d'eau sous pression. Ceci a tendance à faire rétracter la nappe en consolidant la liaison et en conférant des propriétés supérieures de "drapé" au non-tissé.It was noted that the submission of the tablecloth, during the drying operation, in a warm atmosphere and wet generally has an action accentuating the crimp filaments within the nonwoven, especially if these have been imperfectly separated into unitary constituents by the action of pressurized water jets. This has tendency to retract the sheet by consolidating the binding and imparting superior properties of "draped" in nonwoven.

La nappe obtenue a un toucher très doux et est très souple.The tablecloth obtained has a very soft touch and is very flexible.

On constate à l'examen au microscope que les brins de polyamide et de polyester sont complètement séparés et que l'enchevêtrement est poussé à un stade très avancé.On examination under the microscope, it can be seen that the strands of polyamide and polyester are completely separated and that entanglement is pushed to a stage very advanced.

La charge de rupture ainsi que l'énergie de rupture de la nappe, mesurée selon la norme AFNOR GO7OO1, la résistance à la déchirure amorcée, mesurée selon la norme AFNOR GO7055 et la résistance à l'éclatement, selon la norme AFNOR GO7112 sont à un niveau très élevé ; la rigidité à la flexion est réalisée selon la recommandation ISO/TC.94/SC 1139 F 3/70.The breaking load as well as the energy of rupture of the water table, measured according to the AFNOR standard GO7OO1, the initiated tear resistance, measured according to AFNOR GO7055 standard and resistance to bursting, according to standard AFNOR GO7112 are at a very high level; flexural stiffness is achieved according to ISO / TC.94 / SC 1139 F 3/70.

La déformation sous charge est également très limitée, ce qui démontre parfaitement le très bon niveau de liaison.The deformation under load is also very limited, which perfectly demonstrates the very good link level.

Le tableau ci-après représente les différentes caractéristiques, d'une part, d'une nappe (A) de non-tissé constituée de filaments continus et frisés à structure bilame polyamide 6.6 / polyéthylène terephtalate (50/50) de 1,5 dtex liés par jets d'eau sous pression selon le procédé décrit ci-dessus, et, d'autre part, d'une nappe (B) de non-tissé constituée de filaments monolame, continus et non frisés, de 1,5 dtex, et composés de polyester polyéthylène terephtalate.The table below shows the different characteristics, on the one hand, of a nonwoven web (A) made of continuous and crimped filaments with structure polyamide 6.6 / polyethylene terephthalate bimetallic strip (50/50) of 1.5 dtex linked by pressurized water jets according to the method described above, and, on the other hand, a nonwoven web (B) made of monolame filaments, continuous and non-curly, of 1.5 dtex, and composed of polyester polyethylene terephthalate.

La comparaison des deux colonnes de valeurs permet d'apprécier les avantages notables procurés par l'invention. (A) (B) Masse surfacique (g/m2) 108,5 110 Charge rupture - SL (daN) 43,7 32,3 Charge rupture - ST (dAN) 26,4 22,1 Isotropie 1,65 1,46 Allongement - SL (%) 84,2 72,3 Allongement - ST (%) 88,5 75,6 Allongement / 3daN - SL (%) 4,4 8,2 Allongement / 5daN - SL (%) 7,3 15,6 Allongement / 10daN - SL (%) 15,3 26,5 Allongement / 3daN - ST (%) 14,2 23,6 Allongement / 5daN - ST (%) 21,5 36,8 Allongement / 10daN - ST (%) 36,3 51,5 Energie rupture - SL (j) 42,1 21,3 Energie rupture - ST (j) 22,9 13,6 Epaisseur (mm) 0,66 1,17 Retrait thermique - SL (%) 0,9 0,8 Retrait thermique - ST (%) 0,8 0,7 Flexion SL (mg/cm) 846 1025 Flexion ST (mg/cm) 221 348 The comparison of the two columns of values makes it possible to appreciate the significant advantages provided by the invention. (AT) (B) Area mass (g / m 2 ) 108.5 110 Breaking load - SL (daN) 43.7 32.3 Breaking load - ST (dAN) 26.4 22.1 isotropy 1.65 1.46 Elongation - SL (%) 84.2 72.3 Elongation - ST (%) 88.5 75.6 Elongation / 3daN - SL (%) 4.4 8.2 Elongation / 5daN - SL (%) 7.3 15.6 Elongation / 10daN - SL (%) 15.3 26.5 Elongation / 3daN - ST (%) 14.2 23.6 Elongation / 5daN - ST (%) 21.5 36.8 Elongation / 10daN - ST (%) 36.3 51.5 Breaking energy - SL (j) 42.1 21.3 Breaking energy - ST (j) 22.9 13.6 Thickness (mm) 0.66 1.17 Thermal shrinkage - SL (%) 0.9 0.8 Thermal shrinkage - ST (%) 0.8 0.7 Flexion SL (mg / cm) 846 1025 ST bending (mg / cm) 221 348

Claims (9)

  1. A process for manufacturing a nonwoven sheet formed from continuous filaments bonded together, characterized in that it consists in producing continuous bicomponent filaments, the linear density of which is less than 4 dtex, these filaments comprising two elementary filamentary components side by side made of two different polymers and exhibiting a spontaneous crimp with a crimp frequency of 3 to 30 crimps per centimetre and a percentage crimp of 50 to 400%, in forming a nonwoven sheet from these crimped bicomponent filaments which has a weight of 10 to 400 g/m2, then in subjecting both sides of the said sheet to successive fluid jets under a pressure of from 140 × 105 Pa to 300 × 105 Pa, the mechanical action of which causes dissociation of the said filaments into their elementary filamentary components and also entanglement and interlacement of the said filaments and their components.
  2. A manufacturing process according to claim 1, characterized in that the crimped bicomponent filaments forming the nonwoven sheet have a bilayer structure.
  3. A manufacturing process according to either of claims 1 and 2, characterized in that the bicomponent filaments, comprising two filamentary components side by side, are composed of two different polymers in the form of a combination, on the one hand, of a polyamide chosen from the group formed by nylon-6,6, nylon-6 and nylon-11 and, on the other hand, of a polyester chosen from the group formed by polyethylene terephthalate, polybutylene terephthalate and copolyester.
  4. A manufacturing process according to any one of claims 1 to 3, characterized in that the filaments have a crimp frequency of 8 to 20 crimps per centimetre.
  5. A manufacturing process according to any one of claims 1 to 4, characterized in that the nonwoven sheet has a weight of 20 to 200 g/m2.
  6. A manufacturing process according to any one of claims 1 to 5, characterized in that the nozzles for generating the fluid jets have an ejection orifice diameter of from 100 µm to 250 µm, the said nozzles being grouped together in linear arrays, lying in one or more rows, with a space preferably of between 0.2 and 1.2 mm between ejection orifices.
  7. A manufacturing process according to any one of claims 1 to 6, characterized in that the wires supporting the nonwoven sheet during application of the fluid jets consist of closely woven metal wires of 80 to 120 mesh.
  8. A manufacturing process according to any one of claims 1 to 7, characterized in that it consists in subjecting the nonwoven sheet, while it is being dried, to a hot and wet environment making it possible to accentuate the crimping of the filaments and to bring about shrinkage and consolidation of the said sheet, as well as improved handle properties.
  9. A nonwoven sheet obtained by means of the manufacturing process according to any one of claims 1 to 8, characterized in that it is formed from entangled and interlaced, crimped continuous filaments, consisting of two different materials and obtained by dissociation of continuous bicomponent filaments having a bilayer structure.
EP94440050A 1993-04-22 1994-07-29 Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained Expired - Lifetime EP0694644B2 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
FR9304919A FR2705698B1 (en) 1993-04-22 1993-04-22 Method of manufacturing a nonwoven web consisting of continuous filaments bonded together and the web thus obtained.
US08/053,367 US5355565A (en) 1993-04-22 1993-04-28 Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained
ES94440050T ES2141812T3 (en) 1993-04-22 1994-07-29 MANUFACTURING PROCEDURE OF A SHEET OF NON-WOVEN MATERIAL, CONSTITUTED BY CONTINUOUS FILAMENTS UNITED BETWEEN THEM, AND SHEET SO OBTAINED.
EP94440050A EP0694644B2 (en) 1993-04-22 1994-07-29 Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained
SI9430302T SI0694644T1 (en) 1993-04-22 1994-07-29 Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained
DK94440050T DK0694644T3 (en) 1993-04-22 1994-07-29 Process for making a nonwoven fabric consisting of continuous filaments interconnected
DE0694644T DE694644T1 (en) 1993-04-22 1994-07-29 Manufacturing process for a nonwoven layer made of bound filaments and balm thus produced
AT94440050T ATE186578T1 (en) 1993-04-22 1994-07-29 PRODUCTION METHOD FOR A NON-WOVEN LAYER OF BONDED FILAMENTS AND BALM PRODUCED THEREFORE
DE69421612T DE69421612T3 (en) 1993-04-22 1994-07-29 Manufacturing process for a nonwoven layer made of bound filaments and balm thus produced
PT94440050T PT694644E (en) 1993-04-22 1994-07-29 PROCESS FOR THE MANUFACTURE OF A NON-TISSUE BAND CONSTITUTED BY CONTINUOUS FILAMENTS LINKED BETWEEN IT AND OBTAINED BAND
GR20000400294T GR3032596T3 (en) 1993-04-22 2000-02-09 Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9304919A FR2705698B1 (en) 1993-04-22 1993-04-22 Method of manufacturing a nonwoven web consisting of continuous filaments bonded together and the web thus obtained.
ZA945637A ZA945637B (en) 1994-07-29 1994-07-29 Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained
EP94440050A EP0694644B2 (en) 1993-04-22 1994-07-29 Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained

Publications (3)

Publication Number Publication Date
EP0694644A1 EP0694644A1 (en) 1996-01-31
EP0694644B1 EP0694644B1 (en) 1999-11-10
EP0694644B2 true EP0694644B2 (en) 2004-03-10

Family

ID=27236259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94440050A Expired - Lifetime EP0694644B2 (en) 1993-04-22 1994-07-29 Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained

Country Status (10)

Country Link
US (1) US5355565A (en)
EP (1) EP0694644B2 (en)
AT (1) ATE186578T1 (en)
DE (2) DE694644T1 (en)
DK (1) DK0694644T3 (en)
ES (1) ES2141812T3 (en)
FR (1) FR2705698B1 (en)
GR (1) GR3032596T3 (en)
PT (1) PT694644E (en)
SI (1) SI0694644T1 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5587225A (en) * 1995-04-27 1996-12-24 Kimberly-Clark Corporation Knit-like nonwoven composite fabric
US6352948B1 (en) 1995-06-07 2002-03-05 Kimberly-Clark Worldwide, Inc. Fine fiber composite web laminates
US6200669B1 (en) 1996-11-26 2001-03-13 Kimberly-Clark Worldwide, Inc. Entangled nonwoven fabrics and methods for forming the same
US5970583A (en) * 1997-06-17 1999-10-26 Firma Carl Freudenberg Nonwoven lap formed of very fine continuous filaments
JPH11217757A (en) * 1998-01-30 1999-08-10 Unitika Ltd Staple fiber nonwoven fabric and its production
US7091140B1 (en) 1999-04-07 2006-08-15 Polymer Group, Inc. Hydroentanglement of continuous polymer filaments
DE19934442C2 (en) * 1999-07-26 2001-09-20 Freudenberg Carl Fa Process for producing a nonwoven and nonwoven for producing cleanroom protective clothing
DE19962355A1 (en) * 1999-12-23 2001-07-05 Freudenberg Carl Fa Sanitary clothing
DE19962359B4 (en) * 1999-12-23 2004-07-08 Carl Freudenberg Kg Thermo nonwoven
DE19962357A1 (en) * 1999-12-23 2001-07-05 Freudenberg Carl Fa Sleepwear
DE19962360B4 (en) * 1999-12-23 2005-06-30 Carl Freudenberg Kg Protective clothing
DE19962356A1 (en) * 1999-12-23 2001-07-05 Freudenberg Carl Fa Sanitary linen
DE19962361A1 (en) * 1999-12-23 2001-07-12 Freudenberg Carl Fa Sportswear
DE10009281C1 (en) * 2000-02-28 2001-03-22 Freudenberg Carl Fa Sound-damping fleece especially suited for vehicle interior cladding, is made of fine melt-spun fibers, split to microfilaments following pre-solidification
DE10009248C2 (en) * 2000-02-28 2002-06-27 Freudenberg Carl Kg Medical dressings
DE60122501T2 (en) 2000-05-16 2007-02-01 Polymer Group, Inc. METHOD FOR PRODUCING A NONWOVEN FABRIC WITH FISSILE FIBERS
US6736916B2 (en) 2000-12-20 2004-05-18 Kimberly-Clark Worldwide, Inc. Hydraulically arranged nonwoven webs and method of making same
FR2835866B1 (en) 2002-02-12 2004-08-20 Meritor Light Vehicle Sys Ltd MOTOR VEHICLE OPENING DEVICE
US6715189B2 (en) * 2002-02-27 2004-04-06 Milliken & Company Method for producing a nonwoven fabric with enhanced characteristics
DE10219929A1 (en) * 2002-05-03 2003-12-04 Freudenberg Carl Kg Process for improving softness and / or dropping nonwovens
US6739023B2 (en) 2002-07-18 2004-05-25 Kimberly Clark Worldwide, Inc. Method of forming a nonwoven composite fabric and fabric produced thereof
US6958103B2 (en) 2002-12-23 2005-10-25 Kimberly-Clark Worldwide, Inc. Entangled fabrics containing staple fibers
US7022201B2 (en) 2002-12-23 2006-04-04 Kimberly-Clark Worldwide, Inc. Entangled fabric wipers for oil and grease absorbency
US7645353B2 (en) 2003-12-23 2010-01-12 Kimberly-Clark Worldwide, Inc. Ultrasonically laminated multi-ply fabrics
US7194788B2 (en) 2003-12-23 2007-03-27 Kimberly-Clark Worldwide, Inc. Soft and bulky composite fabrics
GB2415011B (en) * 2004-06-11 2009-01-14 Louver Lite Ltd Blind fabric
ES2279679B1 (en) * 2005-05-09 2008-07-16 Antonio Bullon Herrera IMPROVEMENTS IN THE CONSTITUTION OF CURTAINS, STORES AND SIMILAR ELEMENTS.
US8021996B2 (en) 2008-12-23 2011-09-20 Kimberly-Clark Worldwide, Inc. Nonwoven web and filter media containing partially split multicomponent fibers
MX2022002543A (en) * 2019-09-03 2022-03-22 Berry Global Inc Hydroentangled nonwoven fabrics including crimped continuous fibers.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485706A (en) † 1968-01-18 1969-12-23 Du Pont Textile-like patterned nonwoven fabrics and their production
EP0586924A1 (en) † 1992-08-21 1994-03-16 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric and method for making same

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL147200B (en) * 1964-08-04 1975-09-15 Du Pont PROCESS OF MANUFACTURE OF AN OPENED NON-WOVEN FABRIC AND NON-WOVEN FABRIC MANUFACTURED BY THIS PROCESS.
DE2011813A1 (en) * 1969-03-12 1970-10-01 Fiber Industries Inc., Charlotte, N.C. (V.St.A.) Elastic crimped polyester fibers and materials made therefrom
FR2299438A1 (en) * 1974-06-10 1976-08-27 Rhone Poulenc Textile PROCESS AND DEVICE FOR THE MANUFACTURE OF NON-WOVEN THERMOPLASTIC CONTINUOUS YARN TABLECLOTHS
US4188690A (en) * 1976-02-25 1980-02-19 Mitsubishi Rayon Company, Limited Nonwoven fabric and manufacturing method thereof
US4329763A (en) * 1979-01-04 1982-05-18 Monsanto Company Process for softening nonwoven fabrics
EP0090397B1 (en) * 1982-03-31 1990-01-24 Toray Industries, Inc. Ultrafine fiber entangled sheet and method of producing the same
US4548628A (en) * 1982-04-26 1985-10-22 Asahi Kasei Kogyo Kabushiki Kaisha Filter medium and process for preparing same
JPS599279A (en) * 1982-07-07 1984-01-18 東レ株式会社 Aniline-like artificial leather and production thereof
JPS59125954A (en) * 1982-12-31 1984-07-20 ユニ・チャ−ム株式会社 Production of non-woven fabric
FR2546536B1 (en) * 1983-05-25 1985-08-16 Rhone Poulenc Fibres PROCESS FOR THE TREATMENT OF NONWOVEN TABLECLOTHS AND PRODUCT OBTAINED
EP0148033B1 (en) * 1984-01-05 1990-09-05 E.I. Du Pont De Nemours And Company Nonwoven fabrics
US4939016A (en) * 1988-03-18 1990-07-03 Kimberly-Clark Corporation Hydraulically entangled nonwoven elastomeric web and method of forming the same
JPH0749619B2 (en) * 1990-04-12 1995-05-31 ユニチカ株式会社 Entangled nonwoven fabric and method for producing the same
JPH0434058A (en) * 1990-05-30 1992-02-05 Nippon Ester Co Ltd Production of nonwoven fabric of ultrafine short fiber
JPH0457950A (en) * 1990-06-25 1992-02-25 Nippon Ester Co Ltd Production of superfine staple fiber nonwoven fabric
JPH0465567A (en) * 1990-06-28 1992-03-02 Daiwabo Create Kk Nonwoven fabric and production thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485706A (en) † 1968-01-18 1969-12-23 Du Pont Textile-like patterned nonwoven fabrics and their production
EP0586924A1 (en) † 1992-08-21 1994-03-16 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric and method for making same

Also Published As

Publication number Publication date
FR2705698B1 (en) 1995-06-30
SI0694644T1 (en) 2000-04-30
EP0694644A1 (en) 1996-01-31
DE69421612T3 (en) 2004-11-04
DE694644T1 (en) 1996-12-12
EP0694644B1 (en) 1999-11-10
PT694644E (en) 2000-04-28
FR2705698A1 (en) 1994-12-02
ES2141812T3 (en) 2000-04-01
DE69421612D1 (en) 1999-12-16
ATE186578T1 (en) 1999-11-15
DK0694644T3 (en) 2000-05-15
US5355565A (en) 1994-10-18
DE69421612T2 (en) 2001-05-03
GR3032596T3 (en) 2000-05-31

Similar Documents

Publication Publication Date Title
EP0694644B2 (en) Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained
CA2208117C (en) Non-woven tablecloth formed with very thin endless threads
US5970583A (en) Nonwoven lap formed of very fine continuous filaments
EP1117860B1 (en) Method for producing a complex nonwoven material and resulting novel material
CA1226426A (en) Treatment of non woven mats, and product thus made
FR2490935A1 (en) TRIPLURE FOR CLOTHES OF CLOTHING AND METHOD OF MANUFACTURING THE SAME
JPH0268345A (en) Semipermanent and throwaway nonwoven fabric and manufacturing method concerning it
FR2711151A1 (en) Interlining support comprising a web of fibers intermingled in weft yarns and its method of manufacture.
CA2380220A1 (en) Bonded-fibre fabric for producing clean-room protective clothing
EP0452163A1 (en) Method for treating textile materials by high pressure jets
EP0937801A1 (en) Reinforcing textile for stiffening fabrics, manufacturing process and applications
EP0644287B1 (en) Weft knitted biodegradable textile support for thermofusible interlining
KR20010015762A (en) Textured Nonwoven Composite Material and Method for Making the Same
JP2017119937A (en) Sheet-like article and method for producing the same
FR2562918A1 (en) PROCESS FOR MANUFACTURING TEXTILE ARTICLE IN FLOORED FLOOR, AND TEXTILE ARTICLE IN SOFT FLOATING MATERIAL OBTAINED BY CARRYING OUT THE PROCESS
EP1444076A1 (en) Diaphanous nonwoven fabrics with improved abrasive performance
FR2752247A1 (en) Nonwoven fabric production
EP1136003B1 (en) Thermobondable textile support and its method of manufacturing
JP2007197890A (en) Woven or knitted fabric for laminating non-woven fabric, composite non-woven fabric and leather like sheet using the same, and method for producing the woven or knitted fabric for laminating non-woven fabric
FR2791708A1 (en) PROCESS FOR PRODUCING FABRICS BASED ON SYNTHETIC FIBERS, ESPECIALLY POLYAMIDES, WITH A SURFACE EFFECT OBTAINED BY CALENDERING
JPH11152669A (en) Bulky nonwoven fabric and its production
JPH0694629B2 (en) Method for manufacturing flexible leather-like sheet
JPS5810504B2 (en) Manufacturing method of nonwoven fabric
BE852140A (en) METHOD OF MANUFACTURING HAIR FABRICS BY KNITTING THIN RIBBONS AND RESULTING FABRICS
EP1090174A1 (en) Use of three-dimensional crimping fibres for making staying material, and resulting staying material

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 CH DE DK ES FR GB GR IE IT LI LU NL PT SE

AX Request for extension of the european patent

Free format text: SI PAYMENT 940803

RAX Requested extension states of the european patent have changed

Free format text: SI PAYMENT 940803

17P Request for examination filed

Effective date: 19960503

GBC Gb: translation of claims filed (gb section 78(7)/1977)
TCAT At: translation of patent claims filed
TCNL Nl: translation of patent claims filed
DET De: translation of patent claims
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FREUDENBERG POLITEX SA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19990331

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE

AX Request for extension of the european patent

Free format text: SI PAYMENT 19940803

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19991110

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19991110

REF Corresponds to:

Ref document number: 186578

Country of ref document: AT

Date of ref document: 19991115

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: HEPP, WENGER & RYFFEL AG

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19991117

REF Corresponds to:

Ref document number: 69421612

Country of ref document: DE

Date of ref document: 19991216

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: FRENCH

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2141812

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20000125

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: KIMBERLY-CLARK WORLDWIDE, INC

Effective date: 20000809

NLR1 Nl: opposition has been filed with the epo

Opponent name: KIMBERLY-CLARK WORLDWIDE, INC

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: CARL FREUDENBERG KG

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: CARL FREUDENBERG KG

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20030630

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20030704

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20030707

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030716

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20030717

Year of fee payment: 10

Ref country code: DK

Payment date: 20030717

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20030718

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20030721

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20030724

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20030729

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20030731

Year of fee payment: 10

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

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

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20040310

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE

AX Request for extension of the european patent

Extension state: SI

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: MAINTIEN DU BREVET DONT L'ETENDUE A ETE MODIFIEE

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
NLR2 Nl: decision of opposition

Effective date: 20040310

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040610

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040621

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040621

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040630

REG Reference to a national code

Ref country code: SE

Ref legal event code: ECNC

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040729

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040731

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040731

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: SI

Ref legal event code: IF

BERE Be: lapsed

Owner name: S.A. *FREUDENBERG POLITEX

Effective date: 20040731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20050131

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050729

REG Reference to a national code

Ref country code: SI

Ref legal event code: KO00

Effective date: 20050602

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050729

BERE Be: lapsed

Owner name: S.A. *FREUDENBERG POLITEX

Effective date: 20040731

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20120728

Year of fee payment: 19

Ref country code: DE

Payment date: 20120809

Year of fee payment: 19

Ref country code: FR

Payment date: 20120808

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140201

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69421612

Country of ref document: DE

Effective date: 20140201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130729

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731