EP1001065A1 - Verfahren und System zur Herstellung von Vliesen aus hochfesten synthetischen Endlosfasern, daraus hergestellte Vliese und diese Fasern enthaltende Vliesstoffe - Google Patents

Verfahren und System zur Herstellung von Vliesen aus hochfesten synthetischen Endlosfasern, daraus hergestellte Vliese und diese Fasern enthaltende Vliesstoffe Download PDF

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Publication number
EP1001065A1
EP1001065A1 EP99113123A EP99113123A EP1001065A1 EP 1001065 A1 EP1001065 A1 EP 1001065A1 EP 99113123 A EP99113123 A EP 99113123A EP 99113123 A EP99113123 A EP 99113123A EP 1001065 A1 EP1001065 A1 EP 1001065A1
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EP
European Patent Office
Prior art keywords
filaments
laps
lap
woven fabric
fibers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99113123A
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English (en)
French (fr)
Inventor
Rosaldo Fare
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.)
Fare SpA
Original Assignee
Fare SpA
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Filing date
Publication date
Application filed by Fare SpA filed Critical Fare SpA
Publication of EP1001065A1 publication Critical patent/EP1001065A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/11—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/12—Stretch-spinning methods
    • D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
    • 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
    • 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
    • D04H3/105—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 needling
    • 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
    • D04H3/14—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 yarns or filaments produced by welding

Definitions

  • the present invention relates to a novel method and system for making continuous high toughness fiber or filament laps.
  • the invention also relates to the laps made by the inventive novel method, as well as a non-woven fabric material made by said fibers.
  • the field of the invention is that of the processes used for making synthetic fiber laps, comprising a filament mattress which, as suitably needled and thermocalendered, can be used for making non-woven fabric materials.
  • thermoplastic polymer PP-HDPE-PET-PA and the like
  • continuous filaments which are made by extruding the polymers through longitudinal dies having a large number of die holes.
  • the extruded filament assembly will form, at the outlet of the extruding die, a vertical filament flat beam, which will be then subjected to a drawing operation.
  • the drawing of the filaments, as necessary for increasing the fiber toughness, is conventionally carried out in said spun-bonding systems, by using strong air jets, oriented in the direction of the filament plane (i.e. the vertical plane).
  • the filament lap is made by feeding the drawn filament flat beam to an air jet entangling device, for forming a filament mattress which, upon needling or calendering, will allow a non-woven fabric material.
  • the non-woven material made by the above mentioned prior fibers does not always provide the desired mechanical strength properties.
  • the use of very strong air jets, in order to better drawing the fibers, would involve a comparatively high power cost.
  • the main object of the present invention is to provide a novel method, and the related system, for continuously making fiber laps, as well as a non-woven material made from said laps, said laps being made from improved toughness fibers, having mechanical toughness and strength properties better than that of prior fibers as conventionally made in conventional air jet drawing systems.
  • Another object of the present invention is to provide such a non-woven fabric having mechanical characteristics better than that of prior like fabric materials.
  • the inventive method provides the advantages of making laps which are obtained from filaments having a toughness larger than that of prior filaments made by conventional pneumatic drawing methods.
  • the method according to the present invention advantageously provides a non-woven fabric having better mechanical properties and which can be continuously made directly starting from one or more basic polymers.
  • the non-woven material made starting from needled or thermosealed filament laps, is provided of strength and ultimate elongation properties [M.D. ("Machine-Direction”) and C.D. ("Cross Direction”)], which are better than those of standard available fabric materials.
  • the starting polymeric material (polypropylene thermoplastic polymer PP, high density polyethylene HDPE, polyester PET, polyamides PA and the like) is supplied to a plurality of extruders 1 and being conveyed therefrom, in a molten condition, toward a flow head 2.
  • Said head 2 comprises one or more longitudinal dies having a high number of die holes (not shown), from said die holes a flat beam of filaments 3 being ejected.
  • Said filament beam is then subjected to a preliminarily cooling by air at a cooling station 4 and being then processed in a sizing or antistatic oil application station 5, for facilitating subsequent needling and drawing operations.
  • the thus drawn filament beam is then caused to pass through an air jet entangling device 9, in which a filament mattress or lap 15 will be formed, the lap being then deposited, at the outlet of said device 9, on a conveyor belt 10, including an air suction box 17.
  • the thus made mattress or lap is made with a set weight in grams for specific surface and will have conventionally a width from 1 to 10 m.
  • the lap 15 is then conveyed to a needling apparatus 11 and then to a calender 12, thereby providing a non-woven fabric material 16 which, at the end of the process, will be wound in a winding device 13.
  • the beam filaments 3 will be brought to the desired end count (1.5 to 70 dtex), with a high toughness per filament value (greater than 30 cN/dtex).
  • the thus made thermoplastic fiber filaments will have, owing to the above mentioned mechanical drawing processing, a high level of toughness. This result, in particular, is achieved due to the fact that the filaments forming the filament beam 3 are fully drawn, with a consequent high molecular orientation obtained owing to the disclosed mechanical drawing operation (Full Oriented Yarn - FOY filaments).
  • the disclosed drawing will provide the non-woven fabric with mechanical properties, in the terms of strength and ultimate elongation [M.D. (Machine Direction) and C.D. (Cross Direction)] much greater than the standard values provided by like fabric materials made by filaments of the same type, but drawn by an air jet method (i.e. the so-called Partial Oriented Yarn - POY filaments).
  • the disclosed mechanical drawing of the filaments in addition to providing improved toughness fibers, will also provide the great advantage of allowing a great power saving with respect to prior pneumatic drawing equipment, larger than 30%, the weight of the fabric being the same, and the non-woven fabric coverage capability being the same.
  • the filament mechanical drawing unit could also comprise drawing means different from the disclosed rollers (such as opposite conveyor belts and/or the like) provided that they are adapted to subject the fibers to a mechanical drawing process as necessary for fully orienting said fibers.
  • the number of extruders could be different from that which has been above shown and disclosed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
EP99113123A 1998-11-12 1999-07-07 Verfahren und System zur Herstellung von Vliesen aus hochfesten synthetischen Endlosfasern, daraus hergestellte Vliese und diese Fasern enthaltende Vliesstoffe Withdrawn EP1001065A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI982459 IT1303748B1 (it) 1998-11-12 1998-11-12 Procedimento e impianto per la realizzazione di falde di fibresintetiche o filamenti continui a tenacita' elevata, falde ottenute
ITMI982459 1998-11-12

Publications (1)

Publication Number Publication Date
EP1001065A1 true EP1001065A1 (de) 2000-05-17

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ID=11381051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99113123A Withdrawn EP1001065A1 (de) 1998-11-12 1999-07-07 Verfahren und System zur Herstellung von Vliesen aus hochfesten synthetischen Endlosfasern, daraus hergestellte Vliese und diese Fasern enthaltende Vliesstoffe

Country Status (2)

Country Link
EP (1) EP1001065A1 (de)
IT (1) IT1303748B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10333784A1 (de) * 2003-07-24 2005-02-24 Yao-Chang Lin Kontinuierlicher Prozess zum Erzeugen eines Vliesstoffes aus Fäden, die durch Kalendrieren gedehnt wurden

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3603814A1 (de) * 1986-02-07 1987-08-13 Reifenhaeuser Masch Anlage fuer die herstellung eines fadenvlieses und verfahren zum betrieb einer solchen anlage
US4997611A (en) * 1987-08-22 1991-03-05 Carl Freudenberg Process for the production of nonwoven webs including a drawing step and a separate blowing step

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3603814A1 (de) * 1986-02-07 1987-08-13 Reifenhaeuser Masch Anlage fuer die herstellung eines fadenvlieses und verfahren zum betrieb einer solchen anlage
US4997611A (en) * 1987-08-22 1991-03-05 Carl Freudenberg Process for the production of nonwoven webs including a drawing step and a separate blowing step

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BÉLA VON FALKAI: "SYNTHESEFASERN", 1981, VERLAG CHEMIE, WEINHEIM,DE, XP002130684 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10333784A1 (de) * 2003-07-24 2005-02-24 Yao-Chang Lin Kontinuierlicher Prozess zum Erzeugen eines Vliesstoffes aus Fäden, die durch Kalendrieren gedehnt wurden

Also Published As

Publication number Publication date
ITMI982459A1 (it) 2000-05-12
IT1303748B1 (it) 2001-02-23

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