EP1613802B1 - Non-tisse a base de fibres a composants multiples, eclatees ou susceptibles d'etre divisees - Google Patents

Non-tisse a base de fibres a composants multiples, eclatees ou susceptibles d'etre divisees Download PDF

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Publication number
EP1613802B1
EP1613802B1 EP20040727975 EP04727975A EP1613802B1 EP 1613802 B1 EP1613802 B1 EP 1613802B1 EP 20040727975 EP20040727975 EP 20040727975 EP 04727975 A EP04727975 A EP 04727975A EP 1613802 B1 EP1613802 B1 EP 1613802B1
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European Patent Office
Prior art keywords
fibers
layer
woven
process according
entangling
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Expired - Lifetime
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EP20040727975
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German (de)
English (en)
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EP1613802A2 (fr
Inventor
Vittorio Orlandi
Roberto Pedoja
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Suominen Oyj
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Suominen Corp
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—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
    • D04H1/425—Cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—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
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • 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
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—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
    • D04H1/4374—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 using different kinds of webs, e.g. by layering webs
    • 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
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43825—Composite 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
    • D04H1/42—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
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43838—Ultrafine fibres, e.g. microfibres
    • 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
    • D04H1/48—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 in combination with at least one other method of consolidation
    • D04H1/49—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 in combination with at least one other method of consolidation entanglement by fluid jet in combination with another consolidation means
    • 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
    • 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
    • D04H1/495—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 for formation of patterns, e.g. drilling or rearrangement
    • 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
    • D04H1/498—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 entanglement of layered webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • 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
    • D04H1/732—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 fluid current, e.g. air-lay
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • 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
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/689—Hydroentangled nonwoven fabric

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

Claims (27)

  1. Procédé de production d'un tissu non-tissé, comprenant les étapes de fabrication suivantes :
    a) préparation d'au moins une couche (T1) de fibres polymères à plusieurs composants pouvant être séparées ;
    b) enchevêtrement hydraulique de ladite au moins une couche de manière à obtenir un tissu non tissé dans lequel les fibres polymères à plusieurs composants sont séparées en micro-fibres à composant unique enchevêtrées les unes aux autres,
    caractérisé en ce que l'étape a) comprend :
    - la préparation d'au moins une couche (T1) de fibres polymères à plusieurs composants pouvant être séparées ;
    - l'agencement d'au moins une couche de fibres du matériau absorbant (T3) sur ladite au moins une couche (T1) ;
    - l'agencement d'au moins une autre couche (T2) de fibres polymères à plusieurs composants pouvant être séparées sur ladite au moins une couche de fibres de matériau absorbant,
    de telle sorte que l'étape b) d'enchevêtrement hydraulique est mise en oeuvre de manière à obtenir un tissu non tissé à couche multiple dans lequel les fibres polymères à plusieurs composants sont séparées en micro-fibres à composant unique individuelles s'enchevêtrant à la fois les unes aux autres et avec les fibres du matériau absorbant, et
    dans lequel chaque étape de préparation des fibres polymères et d'agencement des fibres de matériau absorbant est réalisée sur un support (S) présentant une surface comprenant des sections avec un profil sensiblement perpendiculaire au flux d'agencement vertical des fibres séparées par des sections avec un profil incliné de 10° à 50° par rapport audit flux vertical.
  2. Procédé selon la revendication 1, dans lequel ladite étape a) est réalisée par extrusion séparée d'au moins deux polymères par une filière appropriée (5, 7, 11, 15) au-dessous de laquelle lesdits au moins deux composants polymères sont liés de manière à former une fibre à plusieurs composants pouvant être séparée.
  3. Procédé selon la revendication 2, dans lequel ladite fibre à plusieurs composants pouvant être séparé est obtenue par filage et liaison consécutive de jusqu'à 16 fils continus de différents polymères.
  4. Procédé selon l'une quelconque des revendications 1 à 3, dans lequel lesdites fibres polymères dérivent d'au moins deux fils d'un seul polymère et de jusqu'à 16 fils de différents polymères, que ce soit leurs homopolymères, copolymères ou des mélanges de ceux-ci.
  5. Procédé selon la revendication 4, dans lequel lesdits polymères sont sélectionnés à partir de polyesters, polyamides, polyoléfines, polyuréthane, polyester modifié par des additifs, polypropylène, polyéthylène, polypropylène téréphtalate, polybutylène téréphtalate.
  6. Procédé de production d'un tissu non tissé, comprenant les étapes de fabrication suivantes :
    i) préparation d'au moins une couche (T1) de fibres polymères éclatées ;
    ii) enchevêtrement hydraulique de ladite au moins une couche de manière à obtenir un tissu non tissé dans lequel les fibres polymères sont éclatées en micro-fibres enchevêtrées les unes entre les autres,
    caractérisé en ce que l'étape i) comprend :
    - la préparation d'au moins une couche (T1) de fibres polymères éclatées ;
    - l'agencement d'au moins une couche de fibres de matériau absorbant (T3) sur ladite au moins une couche (T1) ;
    - l'agencement d'au moins une autre couche (T2) de fibres polymères éclatées sur ladite au moins une couche de fibres de matériau absorbant,
    de telle sorte que l'étape d'enchevêtrement hydraulique ii) est mise en oeuvre de manière à obtenir un tissu non tissé à couches multiples dans lequel les fibres polymères éclatées en micro-fibres individuelles s'enchevêtrent à la fois les unes avec les autres et avec les fibres du matériau absorbant, et
    dans lequel chaque étape de préparation des fibres polymères et d'agencement des fibres du matériau absorbant est réalisée sur un support (S) présentant une surface comprenant des sections avec un profil sensiblement perpendiculaire au flux d'agencement vertical des fibres séparées par des sections avec un profil incliné de 10° à 50° par rapport audit flux vertical.
  7. Procédé selon la revendication 6, dans lequel les fibres polymères éclatées sont obtenues par le passage de fibres polymères à travers une tuyère de Laval.
  8. Procédé selon la revendication 6 ou 7, dans lequel les polymères des fibres éclatées sont sélectionnées à partir de polymères naturels ou synthétiques.
  9. Procédé selon la revendication 8, dans lequel les polymères naturels sont sélectionnés à partir de la cellulose, de Lyocell et de PLA, alors que les polymères synthétiques sont sélectionnés à partir du polypropylène, du polyéthylène, du polyamide et du polyester.
  10. Procédé selon l'une quelconque des revendications 1 à 9, dans lequel ledit agencement de fibres de matériau absorbant est mis en oeuvre avec des fibres de pulpe de cellulose.
  11. Procédé selon l'une quelconque des revendications 1 à 10, comprenant en outre une étape de séchage après l'étape d'enchevêtrement hydraulique.
  12. Procédé selon la revendication 11, comprenant en outre une étape d'enroulement du tissu non-tissé sur un rouleau après ladite étape de séchage.
  13. Procédé selon l'une quelconque des revendications 1 à 9, comprenant en outre une étape de pré-enchevêtrement hydraulique après ladite étape de préparation d'au moins une couche (T1) de fibres polymères.
  14. Procédé selon la revendication 13, comprenant en outre une étape de séchage après ladite étape de pré-enchevêtrement hydraulique.
  15. Procédé selon l'une quelconque des revendications 11 à 14, comprenant en outre une étape de déshydratation simultanée ou consécutive à ladite étape de séchage.
  16. Procédé selon l'une quelconque des revendications 12 à 15, comprenant en outre l'étape d'épaississement avant l'étape d'enroulement.
  17. Procédé selon la revendication 16, dans lequel ladite étape d'épaississement est mise en oeuvre par l'intermédiaire d'un calandrage ou enchevêtrement hydraulique.
  18. Procédé selon l'une quelconque des revendications 1 à 17, dans lequel de l'air est aspiré à une température inférieure ou égale à la température ambiante à travers lesdites fibres polymères dans le but de les refroidir et de les durcir.
  19. Procédé selon l'une quelconque des revendications 6 à 18, dans lequel lesdites fibres éclatées sont humidifiées, avant l'enchevêtrement hydraulique.
  20. Procédé selon l'une quelconque des revendications 1 à 19, comprenant en outre une étape de finition de tissu non tissé.
  21. Procédé selon l'une quelconque des revendications 1 à 20, comprenant en outre une étape d'impression à plusieurs couleurs du tissu non tissé.
  22. Tissu non tissé à couches multiples, enchevêtré hydrauliquement qui peut être obtenu suivant le procédé selon l'une quelconque des revendications 1 à 21.
  23. Tissu non-tissé selon la revendication 22, comprenant au moins une couche de micro-fibres.
  24. Tissu non-tissé selon la revendication 22 ou 23, dans lequel lesdites micro-fibres présentent un diamètre compris entre 0,1 dTex et 0,9 dTex.
  25. Tissu non tissé selon la revendication 22 ou 23, dans lequel lesdites micro-fibres présentent un diamètre compris entre 1 et 5 microns.
  26. Tissu non tissé selon l'une quelconque des revendications 22 à 25, dans lequel le poids en grammes par mètre est compris entre 50 et 70, la résistance à la traction suivant la direction de la machine, exprimée en newton pour 5 cm (N/5cm) est comprise entre 50 et 150, alors qu'elle est, suivant la direction transversale, comprise entre 20 et 75, l'allongement calculé en pourcentage par rapport à la longueur dans un état relaxé est compris entre 35 % et 85 % suivant la direction de la machine (MD), alors qu'il est compris entre 70 % et 100 % suivant la direction transversale (CD), la teneur finale de la fibre de pulpe de cellulose est comprise entre 50 % et 75 % en poids du poids total du tissu non tissé, le facteur d'absorption calculé en pourcentage du poids total du poids du tissu non tissé sec est compris entre 600 % et 700 %.
  27. Tissu non tissé selon l'une quelconque des revendications 22 à 25, dans lequel ledit tissu non tissé est du type à trois couches présentant un poids total en grammes compris entre 48 et 65, un poids de la couche supérieure en grammes par mètre carré compris entre 11 et 13, un poids de la couche interne de la fibre de pulpe de cellulose compris entre 26 et 39 grammes par mètre carré, un poids de la couche inférieure en grammes par mètre carré compris entre 11 et 13, une résistance à la traction suivant la direction MD comprise entre 18 et 27 N/5cm, une résistance à la traction suivant la direction CD comprise entre 7 et 14 N/5cm et une épaisseur comprise entre 0,40 et 0,65 mm.
EP20040727975 2003-04-17 2004-04-16 Non-tisse a base de fibres a composants multiples, eclatees ou susceptibles d'etre divisees Expired - Lifetime EP1613802B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20030805 ITMI20030805A1 (it) 2003-04-17 2003-04-17 Non-tessuto a base di fibre esplose o fibre multicomponenti splittabili.
PCT/IT2004/000220 WO2004092472A2 (fr) 2003-04-17 2004-04-16 Non-tisse a base de fibres a composants multiples, eclatees ou susceptibles d'etre divisees

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EP1613802A2 EP1613802A2 (fr) 2006-01-11
EP1613802B1 true EP1613802B1 (fr) 2014-07-23

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US (1) US20070033779A1 (fr)
EP (1) EP1613802B1 (fr)
ES (1) ES2518318T3 (fr)
IT (1) ITMI20030805A1 (fr)
WO (1) WO2004092472A2 (fr)

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Also Published As

Publication number Publication date
EP1613802A2 (fr) 2006-01-11
US20070033779A1 (en) 2007-02-15
WO2004092472A2 (fr) 2004-10-28
ITMI20030805A1 (it) 2004-10-18
ES2518318T3 (es) 2014-11-05
WO2004092472A3 (fr) 2004-12-29

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