EP1302587A2 - Verfahren zur Herstellung eines wildlederähnlichen Vlies- oder Gewebestoffes mit elastischer Mikrofaser - Google Patents

Verfahren zur Herstellung eines wildlederähnlichen Vlies- oder Gewebestoffes mit elastischer Mikrofaser Download PDF

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Publication number
EP1302587A2
EP1302587A2 EP02021713A EP02021713A EP1302587A2 EP 1302587 A2 EP1302587 A2 EP 1302587A2 EP 02021713 A EP02021713 A EP 02021713A EP 02021713 A EP02021713 A EP 02021713A EP 1302587 A2 EP1302587 A2 EP 1302587A2
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EP
European Patent Office
Prior art keywords
polymer
ptt
preparation
woven fabric
microfiber
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EP02021713A
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English (en)
French (fr)
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EP1302587A3 (de
Inventor
David Latini
Omar Teofrasti
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Alcantara SpA
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Alcantara SpA
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Publication of EP1302587A2 publication Critical patent/EP1302587A2/de
Publication of EP1302587A3 publication Critical patent/EP1302587A3/de
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • 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
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4334—Polyamides
    • 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
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—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
    • 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
    • D04H1/4383—Composite fibres sea-island
    • 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
    • D04H1/42—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
    • D04H1/43914—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 hollow 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
    • D04H1/4391—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
    • 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
    • D04H1/482—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 in combination with shrinkage
    • 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
    • D04H1/50—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 treatment to produce shrinking, swelling, crimping or curling of 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
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/645—Impregnation followed by a solidification process
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)

Definitions

  • the present invention relates to a production process for suede-finished microfibrous woven and non-woven fabrics characterized by high formability and elasticity, which can be dyed at relatively low temperatures and have good color characteristics (fastness of the color to washing, abrasion and light).
  • the present invention refers to the employment of a particular polymer that, when used as the microfiber component in the preparation of the felt of the non-woven fabric, gives advanced properties to the finished product.
  • the preparation of the microfiber which is a critical stage in the preparation of the microfibrous non-woven fabric, can be favorably achieved by means of co-extruding the chosen polymer with another polymer through a spinneret with particular holes in such a way that the two-component fiber has a cross-section where a bundle of microfibers are surrounded by the co-extruded polymer (islands-in-the-sea).
  • Several treatments of the extruded fiber provide for the separation of the microfiber from the polymer that surrounds it.
  • the products obtained with the series of stages defined above and described in some of the patents cited have good physical-mechanical and textile characteristics.
  • the end product comprising impregnated fibers (microfibers) in a polymer binder that confers a suede-leather appearance on it and is generally polyurethane, has the defects and advantages of its components and, in particular, of the microfiber used.
  • PET polyethylene terephthalate
  • Nylon 6 or 6.6
  • PET offers the advantage to guaranteeing good dyeing characteristics to the finished product -- even though the dyeing process must be carried out at high temperatures (> 120 °C) which reduces the mechanical characteristics.
  • the intrinsic properties of PET do not permit products with high levels of formability and elasticity to be obtained.
  • the present invention relates to a polymer that can be transformed into a fiber or microfiber that does not have the aforementioned defects of PET.
  • the fiber or the microfiber used as a constituent of suede-finished fabrics according to the present invention confers characteristics of considerable formability and elasticity on these.
  • the raw product shows optimum dyability even with treatment carried out at relatively low temperatures, thus maintaining the good mechanical characteristics of the intermediate before dyeing, and, once dyed, has colour properties of the level of PET-based products.
  • the object of the present invention is achieved by using a polyester consisting of a repeating monomer unit of trimethylene terephthalate(PTT), of formula: (where n is a number between 30 and 300) as the polymer for the preparation of the microfibers that constitute the non-woven fabric.
  • PTT trimethylene terephthalate
  • the PTT has high formability as well as high elastic recovery. This means that products prepared with PTT fibers can be considerably distorted, but, once the force causing the deformation is removed, they resume their original shape. This mechanical property is particularly appreciated in the field of use of the suede-finished microfibrous non-woven fabric of the present invention, particularly in the technological area of interior coverings of automobiles, furniture and clothing.
  • PTT fibres can be dyed using dye treatments at temperatures somewhat lower than those demanded by PET, especially the fibers and the microfibers, therefore products obtained from PTT, as well as having good dyability, assure retention of mechanical characteristics of the raw product.
  • Polytrimethylene terephthalate is readily avilable nowadays, and can be obtained by reaction of terephthalic acid or its ester with propylene glycol. Many methods are described in the literature for the preparation of polymers and co-polymers of PTT.
  • the aforesaid objectives can be conventionally reached through the use of "conjugated" fibers, that is fibers of higher denier (> 1 den) obtained by co-extruding two or more polymers with different chemical composition.
  • the coextruded fibers once transformed into staple by means of drawing, crimping and cutting, are subjected to carding and needle-punching to be transformed into felt or are processed to give wovens. Only at this point is the microfiber generated by separating the two polymers with appropriate mechanical or chemical treatment (heating, extraction with solvent, selective swelling, use of high pressure water-jets).
  • Mono-component spinning of low denier fibers or microfibers can also be proceeded to, followed by multi-layer distribution technology (as for the production of paper from cellulose microfiber) and water punching.
  • Non-woven fabric with better mechanical properties can be obtained by lamination of two external layers of PTT-base staple with an inner fabric support in knit or woven cotton, acrylic or polyester, or by heat-bonding the finished product with a woven fabric support.
  • the textile support is intrinsically elastic (e.g. uses polyurethane fibers) the formability and elastic properties given by the microfiber to the finished product are further improved.
  • woven fabrics can be produced by starting from the stretched fiber. Microfibres are then generated from the above mentioned wovens according to the methods already described, and the process is completed by polyurethane application, mechanical treatment to upgrade the surface (suede effect), dyeing and finishing.
  • EXAMPLE 1 (comparison of standard PET base product and PTT base product).
  • a fiber is prepared in staple formed from microfibers of the component base ( PET, PTT respectively) in a polystyrene matrix ("island-sea" fiber obtained using a spinneret having the section identified as 1 in the figure) through a spinning process that has the following steps:
  • a first felt is produced by carding and successive needle-punching is proceeded to until a finished felt is obtained with density of 0,2 g/cm3.
  • the felt is then impregnated with a polyvinyl alcohol (PVA) solution in water (12% by weight) at high temperature (95°C) in order to carry out shrinkage.
  • PVA polyvinyl alcohol
  • the product is dried in an oven and then the sea component (polystyrene) is dissolved with trichloroethylene.
  • the following step is impregnation of the intermediate product with polyurethane in dimethylformamide (12.5% by weight) solution and the successive coagulation in aqueous solution.
  • the polyvinyl alcohol is extracted with water at 80°C and a mixture of silicone and an antistatic agent (quaternated polyalkylene-polyamide) in aqueous dispersion (0.2% by weight for both) is applied to the wet product, which is finally dried in an oven.
  • an antistatic agent quaternated polyalkylene-polyamide
  • EXAMPLE 2 (comparison between standard PET base product and PTT base product obtained without using organic solvents).
  • the fiber has the cross section 1 as reported in figure 1 and is composed of island base components (PET, PTT) in a matrix of soluble co-polyester in aqueous alkaline solutions (TLAS) with an island to sea weight ratio of 57/43.
  • PTT island base components
  • TLAS aqueous alkaline solutions
  • the fiber is stretched at a temperature of 75 °C, in two steps, for a stretch ratio of 3,5.
  • the final staple has the same weight, length and curl characteristics as reported in example 1.
  • the mechanical characteristics of the stretched fiber are: Base component Bicomponent fibre Polyester microfibre Tenacity (g/den) Elongation at break (%) Shrinkage in water at 100°C (%) Tenacity (g/den) Elongation at break (%) PET 2.8 50 26 4.6 65 PTT 2.5 75 35 4.4 96
  • the staple is carded and successively needle-punching until a felt of density 0,22 g/cm 3 is obtained.
  • the felt then undergoes a shrinkage process in water at 95°C in order stabilize the structure and its density increases to 0,33 g/cm3.
  • the felt is then impregnated with an 8% by weight aqueous solution of high saponification polyvinyl alcohol (HS-PVA with saponification value > 99.5% molar). After drying (at 100°C) the product is thermally treated (4 minutes at 180°C) in order to reduce the solubility in water of the HS-PVA.
  • a polyurethane in aqueous emulsion (2.5% by weight) with to an appropriate thickening-reticulating agent of blocked isocyanate type (10% by weight of polyurethane) is then applied the product is dried at 100°C, then thermofixed at 150°C.
  • the next step is the dissolving of the sea component in Sodium Hydroxide solution in the following conditions:
  • the raw product is then impregnated with polyurethane in aqueous emulsion (12.5% by weight) containing 5% of blocked isocyanate reticulating agent, followed by the drying and the thermosetting at 160°C.
  • the polyvinyl alcohol is extracted with water at 90°C and a mixture of silicone and an antistatic agent (quaternated polyalkylene-polyamide) in aqueous dispersion (0.2% by weight for both) is applied to the damp product which is finally dried in an oven.
  • an antistatic agent quaternated polyalkylene-polyamide
  • the piece is finally cut in two in the section, buffed and colored with dispersing dyes. Also in this case the finished products made from PTT have deformation values under dynamic load (50 N) increased by 40% on average compared to standard (PET).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Woven Fabrics (AREA)
EP02021713A 2001-10-12 2002-09-25 Verfahren zur Herstellung eines wildlederähnlichen Vlies- oder Gewebestoffes mit elastischer Mikrofaser Withdrawn EP1302587A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001MI002108A ITMI20012108A1 (it) 2001-10-12 2001-10-12 Produzione di tessuto non tessuto scamosciato con microfibra ad elevata elasticita'
ITMI20012108 2001-10-12

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EP1302587A2 true EP1302587A2 (de) 2003-04-16
EP1302587A3 EP1302587A3 (de) 2004-10-06

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1722029A1 (de) * 2004-02-13 2006-11-15 Toray Industries, Inc. Lederartige folie und verfahren zu deren herstellung
ITFI20080157A1 (it) * 2008-08-27 2010-02-28 Texapel Spa Procedimento per la produzione di manufatti tessili
CN101906678A (zh) * 2010-08-19 2010-12-08 中国纺织科学研究院 一种改性聚酯复合纤维及其制备方法
EP2439331A2 (de) * 2009-06-04 2012-04-11 Kolon Industries, Inc Inselfaser, kunstleder und herstellungsverfahren dafür
CN103031680A (zh) * 2012-12-14 2013-04-10 江苏黄果树服饰有限公司 一种面料的生产工艺
CN103890262A (zh) * 2012-01-17 2014-06-25 阿尔坎塔拉股份公司 微纤维产品及其制备覆盖物和外壳的用途
EP2623655A4 (de) * 2010-09-29 2017-04-05 Kolon Industries, Inc. Kunstleder und verfahren zu seiner herstellung
WO2017183997A1 (es) * 2016-04-21 2017-10-26 Toro Malaga, Ana Lucia Procedimiento para la fabricación de textiles no tejidos

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JPH11107154A (ja) * 1997-09-29 1999-04-20 Asahi Chem Ind Co Ltd ポリエステル極細繊維ウエブ
JP3226024B2 (ja) * 1998-02-02 2001-11-05 旭化成株式会社 高度の耐摩耗性を有する起毛人工皮革
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1722029A1 (de) * 2004-02-13 2006-11-15 Toray Industries, Inc. Lederartige folie und verfahren zu deren herstellung
EP1722029A4 (de) * 2004-02-13 2009-07-08 Toray Industries Lederartige folie und verfahren zu deren herstellung
ITFI20080157A1 (it) * 2008-08-27 2010-02-28 Texapel Spa Procedimento per la produzione di manufatti tessili
EP2439331A2 (de) * 2009-06-04 2012-04-11 Kolon Industries, Inc Inselfaser, kunstleder und herstellungsverfahren dafür
EP2439331A4 (de) * 2009-06-04 2013-03-06 Kolon Inc Inselfaser, kunstleder und herstellungsverfahren dafür
CN101906678A (zh) * 2010-08-19 2010-12-08 中国纺织科学研究院 一种改性聚酯复合纤维及其制备方法
EP2623655A4 (de) * 2010-09-29 2017-04-05 Kolon Industries, Inc. Kunstleder und verfahren zu seiner herstellung
CN103890262A (zh) * 2012-01-17 2014-06-25 阿尔坎塔拉股份公司 微纤维产品及其制备覆盖物和外壳的用途
CN103031680A (zh) * 2012-12-14 2013-04-10 江苏黄果树服饰有限公司 一种面料的生产工艺
WO2017183997A1 (es) * 2016-04-21 2017-10-26 Toro Malaga, Ana Lucia Procedimiento para la fabricación de textiles no tejidos

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ITMI20012108A1 (it) 2003-04-12

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