EP0878567B1 - Polyolefinfasern und Polyolefingarne und daraus hergestellte textile Flächengebilde - Google Patents

Polyolefinfasern und Polyolefingarne und daraus hergestellte textile Flächengebilde Download PDF

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Publication number
EP0878567B1
EP0878567B1 EP98107669A EP98107669A EP0878567B1 EP 0878567 B1 EP0878567 B1 EP 0878567B1 EP 98107669 A EP98107669 A EP 98107669A EP 98107669 A EP98107669 A EP 98107669A EP 0878567 B1 EP0878567 B1 EP 0878567B1
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EP
European Patent Office
Prior art keywords
mass
polyolefin
propylene
yarns
polypropylene
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
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EP98107669A
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German (de)
English (en)
French (fr)
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EP0878567A3 (de
EP0878567A2 (de
Inventor
Manfred Prof. Dr. Rätzsch
Ulf Dr. Panzer
Achim Dr. Hesse
Norbert Dr. Reichelt
Manfred Ing. Kirchberger
Peter Ing. Niedersüss
Anton Ing. Wolfsberger
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Borealis AG
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Borealis AG
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Priority claimed from DE1997120135 external-priority patent/DE19720135B4/de
Priority claimed from DE1997122579 external-priority patent/DE19722579B4/de
Application filed by Borealis AG filed Critical Borealis AG
Publication of EP0878567A2 publication Critical patent/EP0878567A2/de
Publication of EP0878567A3 publication Critical patent/EP0878567A3/de
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Publication of EP0878567B1 publication Critical patent/EP0878567B1/de
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Classifications

    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
    • 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
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
    • Y10T428/2931—Fibers or filaments nonconcentric [e.g., side-by-side or eccentric, etc.]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2964—Artificial fiber or filament
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2964—Artificial fiber or filament
    • Y10T428/2967—Synthetic resin or polymer

Definitions

  • the invention relates to melt-processed polyolefin fibers and Polyolefin yarns of high strength and elongation, especially not post-drawn Polyolefin fibers and polyolefin yarns, and textile fabrics made therefrom.
  • Fibers, yarns and textile fabrics made of polypropylene are known (US 3,092 891; Films, fabrics and nonwovens made of polypropylene ", p.175-189, VDI-Verlag Düsseldorf 1979; Moore, P., Polypropylene Handbook "pp. 350-358, Carl Hanser Verlag Kunststoff 1996).
  • the manufacturing process for fibers and yarns based on polypropylene differ in spinning speed and aftertreatment Strands.
  • Preoriented Yarn Spinning ["Pre-Oreinted-Yarn (POY) Spinning”]
  • POY Pre-Oreinted-Yarn
  • the fiber properties are significantly due to the orientation introduced from the melt-shaped Condition determined [Wulfhorst, B., Chemiefaser / Textilindustrie 92 (1990), 971-976]. This orinting effect results from the difference between Extrusion speed and the take-off or winding speed.
  • a special variant of the nonwoven production is the blown fiber (melt-blow) Spinning technology, in which the thread formation with application of a highly heated Luttstromes around the capillary nozzle openings takes place [Fourne ', F. Chemical fibers / textile industry 81 (1979), 445-449].
  • the air flow divides the molten polymer thread in many small individual vials with very little Diameter and at the same time causes stretching of the individual threads.
  • the Further processing of the fibers deposited on the screen conveyor belt or Filaments are made using spunbond technology.
  • the Filaments are removed from the spinneret using godets and placed in Successor devices from stretching device and winder further processed.
  • the Production of high tenacity filament yarns can be carried out using either the short spinning method or also take place after the fast spinning process.
  • a three-dimensional crimp by texturing devices [Bussmann, M., chemical fibers / textile industry 35 (1986) 87, 668-672].
  • the properties of the fibers, yarns and textile fabrics are determined by the Manufacturing process and the polypropylene used determined.
  • nucleating agents leads to a decrease in the strength of the Fibers (Richeson, G., ANTEC'96, 2305-2311).
  • Formulations with fillers such as Calcium carbonate [Nago, S., J. Appl. Polymer Sci. 62 (1996), 81-86] or Poly (methylsesquioxane) [Nago, S., J. Appl. Polymer sci. 61 (1996), 2355-2359] result in microporous fibers after spinning and drawing. Fibers increased Heat resistance can be achieved by spinning polypropylene blends Polyethylene terephthalate [Qin, Y., J. Appl. Polymer sci. 61 (1966), 1287-1292] or with Prepare liquid crystalline polymers [Qin, Y., Polymer 34 (1993), 3597].
  • Polypropylene fibers have the disadvantage of being relatively low Tensile elongation.
  • An addition of elastomers such as ethylene-propylene rubber or Ethylene propylene diene rubber leads to an increase in elongation, however at the same time a sharp drop in the strength of the polypropylene fibers and Game polypropylene.
  • EP-A 0 412 518 discloses grafted ethylene-propylene copolymers which have been prepared with the aid of hydrolyzable silanes. You are connected. However, crosslinked copolymers are not suitable for spinning. According to EP-A 0 517 810, blends with high impact strength can be produced if they contain a PP with a very broad molecular weight distribution, namely an M w / M n ratio of 8 to 60.
  • DE-A 195 06 083 describes nonwovens made from cellulose staple fibers and PP staple fibers, the PP fibers containing up to 15% of a PP grafted with maleic anhydride
  • WO 96/26308 describes dyeable polyolefin fibers which contain a polymer containing polar monomers contain a double bond, contain grafted PP.
  • the object of the present invention was to develop Polyolefin fibers and polyolefin yarns of high strength and elongation, in particular of undrawn polyolefin fibers and yarns, and therefrom manufactured textile fabrics.
  • the in the polyolefin fibers and polyolefin yarns high strength and elongation and textile fabrics produced therefrom may contain modified propylene polymers A) are propylene polymers which are characterized by radical Coupling reactions or polymer-analogous reactions of functionalized Polypropylenes were made.
  • the starting products for the modified propylene polymers A) are preferred Propylene homopolymers as well as copolymers of propylene and alpha olefins with 2 to 18 carbon atoms and mixtures of the polypropylenes mentioned.
  • Especially preferred starting products for these modified propylene polymers are Polypropylene - homopolymers, statistical propylene - copolymers, propylene block copolymers and / or propylene statistical block copolymers.
  • the modified propylene polymers produced by polymer-analogous reactions A) can be implemented by implementing functionalized polypropylenes Create multifunctional compounds of opposite reactivity.
  • the modified propylene polymers A) can also by hydrolytic Condensation of polypropylenes containing hydrolyzable silane groups, getting produced. Examples are those in DE 4107635 or US 47 14 716 described products.
  • Polypropylenes used consist in particular of propylene homopolymers and / or copolymers of propylene and alpha-olefins with 2 to 18 carbon atoms and from mixtures of the polypropylenes mentioned.
  • Be particularly preferred Polypropylene particles made of polypropylenes with bimodal molar mass distribution which in a reactor cascade using Ziegler-Natta catalysts or Metallocene catalysts were produced with weight average molecular weights Mw of 500,000 to 1,500,000 g / mol, number-average molecular weights Mn from 25,000 to 100,000 g / mol and Mw / Mn values of 5 to 60, preferably with weight average molar mass Mw from 600,000 to 1,000,000 g / mol, number-average molecular weights Mn from 30,000 to 100000 g / mol and Mw / Mn values from 15 to 35.
  • the as unmodified propylene polymers B) in the in the polyolefin fibers and Polyolefin yarns and textile fabrics made therefrom, if necessary contained conventional propylene polymers 1) preferably consist of propylene homopolymers with an Mw / Mn ratio of 2 to 4.5 and / or copolymers from propylene and alpha-olefins with 2 to 18 carbon atoms and from mixtures of called polypropylene.
  • auxiliaries contained are preferably 0.01 to 2.5% by mass of stabilizers, 0.1 to 1 Mass% antistatic, 0.2 to 3 mass% pigments, 0.05 to 1 mass% Nucleating agents and / or 0.01 to 1 mass% processing aids.
  • This Auxiliaries can already be used in the melt processing Components A) and / or B) may be included or additionally these components be added.
  • HALS sterically hindered amines
  • Suitable phenolic antioxidants are 2-tert-butyl-4,6-dimethylphenol, 2,6-di-tert-butyl-4-methylphenol, 2,6-di-tert-butyl-4-isoamylphenol, 2,6, -di-tert-butyl-4-ethylphenol, 2-tert-butyl-4,6-diisopropylphenol, 2,6-dicyclopentyl-4-methylphenol, 2,6-di-tert-butyl-4-methoxymethylphenol, 2-tert-butyl-4,6-dioctadecylphenol, 2,5-di-tert-butylhydroquinone, 2,6-di-tert-butyl-4,4-hexadecyloxyphenol, 2,2'-methylene-bis (6-tert-butyl-4-methylphenol), 4,4'-thio-bis- (6-tert-butyl-2-methylphenol), 3 (3,5-d
  • 5,7-di-tert-butyl-3- (3,4-dimethylphenyl) -3H-benzofuran-2-one is a benzofuranone derivative suitable.
  • Calcium stearate, magnesium stearate and / or can be used as processing aids Waxes are used.
  • plasticizing extruders are for melting the mixtures Single screw extruder or twin screw extruder with screw lengths of 28 up to 30 D, preferably with flanged static or dynamic mixers, suitable.
  • the temperature control and speed make shear rates from 10 ⁇ 2> s ⁇ -1> to 10 ⁇ 3> s ⁇ -1>.
  • Diphenyl-heated melt pumps are preferred for use at 240-310 ° C heated melts used.
  • fibers are drawn off with the aid of high-speed godets and in Successor devices from stretching unit, crimper, fixing unit and Cutting machine processed by stretching, crimping and cutting, whereby in short spinning lines (slow spinning) with numbers of nozzle holes from 2000 to 70000 Hole / nozzle the thread take-off speeds to 60 to 250 m / min and in Long spinning lines (conventional high-speed spinning lines) Number of nozzle holes from 800 to 3500 holes / nozzle the thread take-off speeds can be set to 350 to 4000 m / min.
  • the crimping takes place in a stuffer box, at Long spinning lines over crimper, the crimp is two-dimensional.
  • the fibers are made from the Polypropylene mixtures according to the invention with the help of high-speed godets deducted in successor devices from stretching device, hot air texturing chamber, Relaxation device, tangle device and winder by stretching, Hot air testing, crimping and tangling Thread take-off speeds of 1000 to 4000 m / min further processed.
  • the Tangelung saves a separate two-way process.
  • the threads are made from According to the invention, polypropylene mixtures are used in downstream devices Cables and winders processed further.
  • Filament yarns of the "pre-oriented yarn” type (“pre-oriented yarn” type) with Capillary titers from 2 to 6 dtex and total titers up to 500 dtex according to the invention by further processing the fibers from the Polypropylene blends in downstream devices made up of a deflection system and winder and optionally interposed godets Thread take-off speeds of 1000 to 5000 m / min.
  • Textile fabrics in the form of nonwovens are according to the invention Extraction of the fibers from the polypropylene mixtures in the blow duct using air by processing the threads into spunbonded nonwovens in successor devices Screen conveyor belt, calender or needling device and winder Flat, disorderly laying down of the fibers on the sieve-shaped conveyor belt and application of thermal bonding or needling processes to achieve the required strength and dimensional stability. Across from Staple fiber nonwovens have this spunbonded fabrics a significantly cheaper lengthways / crossways - strength ratio.
  • application forms a special variant of nonwoven production a highly heated airflow around the capillary nozzle openings during the extrusion of the Fibers from the polypropylene mixtures from the capillary tool in the Blowing shaft.
  • the air flow stretches the melted thread out of the Polyolefin mixture with simultaneous division into many individual vials Fiber diameters from 0.5 to 12 ⁇ m.
  • the further processing of the on the The screen conveyor belt of the deposited fibers is analogous to the spunbond production.
  • meltblowing variant of nonwoven production from the Polyolefin blends is the temperature and shear rate profile of the Melt processing facility that must be set so that the Melt a degradative reduction in viscosity to a melt index 150g / 10 min at 230 ° C / 2, 16 kp.
  • Preferred extruders (1) for melting the polyolefin mixtures are Single screw extruder with high homogenization effect with screw lengths of 28 up to 36 D, preferably with flanged static or dynamic mixers, used.
  • Preferred dimensions of the spinnerets (3) are spinnerets with Inside diameters from 0.35 to 1.5 mm.
  • the take-off device (5) can be done directly via the winder (6) or below Intermediate switching of high-speed godets.
  • preferred Withdrawal speeds for capillary titers from 2.5 to 5 dtex are 2500 to 3500 m / min.
  • a polyolefin mixture which consists of 99 % By mass of an unmodified polypropylene homopolymer (melt index 18.2 g / 10 min at 230 ° C / 2.16 kg), 1 mass% of a modified polypropylene (Melt index 5.5 g / 10 min at 230 ° C / 2.16 kg, quotient of the intrinsic viscosity (in Decalin at 135 ° C) of the modified polypropylene and the intrinsic viscosity of the unmodified polypropylene with largely the same molar mass weight average 0.74), 0.25 mass% 2-tert-butyl-4,6-diisopropylphenol, 0.2 mass% Up to - 2,2,6,6 - tetramethyl-4-piperidyl sebazate and 0.2 mass% calcium stearate (Auxiliaries based in each case on the sum of the propylene polymers) at one Melt temperature of 275 °
  • the resulting undrawn polypropylene yarn has a total titer of 252 dTex, a tensile strength of 19.5 cN / tex and an elongation of 202%.
  • a polyolefin mixture which consists of 89 % By mass of an unmodified polypropylene homopolymer (melt index 18.2 g / 10 min at 230 ° C / 2.16 kg), 10 mass% of an unmodified heterophasic statistical propylene-ethylene block copolymer (ethylene content 33 mol%, Melt index 8 g / 10 min at 230 ° C / 2.16 kg), 1 mass% of a modified Polypropylene (melt indices 5.5 g / 10 min at 230 ° C / 2, 16 kg, quotient from the Intrinsic viscosity (in decalin at 135 ° C) of the modified polypropylene and Intrinsic viscosity of the unmodified polypropylene with largely the same Molar mass weight average 0.74), 0.25 mass% 2-tert-butyl-4,6-diisopropylphenol, 0.25 mass% bis - 2,2,6,6 -
  • the melt With the spinning pump, the melt becomes the spinnerets transferred and at a temperature of the spinnerets of 275 ° C by the Blow duct, which is cooled with compressed air at a temperature of 20 ° C, with a take-off speed of 3000 m / min due to high-speed godets stripped and wound up.
  • the resulting undrawn polypropylene yarn has a total titer of 253 dTex, a tensile strength of 18.5 cN / tex and an elongation of 195%.
  • a polypropylene compound that is made 100% by mass of an unmodified polypropylene homopolymer (melt index 18.2 g / 10 min at 230 ° C / 2.16 kg), 0.2% by mass of pentaerythritol tetrakis [3- (3,5-ditert.butyl-4-hydroxyphenyl)] propionate, 0.2 mass% bis - 2,2,6,6 tetramethyl-4-piperidyl sebazate and 0.2% by mass of magnesium stearate (auxiliary materials in each case on the polypropylene homopolymer) at a melt temperature of 280 ° C in Extruder melted.
  • the melt becomes the with the spinning pump Spinnerets transferred and at a temperature of the spinnerets of 290 ° C the blow duct, which is cooled with compressed air at a temperature of 20 ° C is, with a take-off speed of 3000 m / min by high-speed Stripped and wound up godets.
  • the resulting undrawn polypropylene yarn has a total titer of 254 dtex, a tensile strength of 23.7 cN / tex and an elongation of 124%.
  • a powdered Polypropylene homopolymer (melt index of 0.2 g / 10 min at 230 ° C / 2.16 kp, average particle diameter 0.55 mm) continuously metered. Furthermore, in the continuous mixer 0.1% by weight calcium stearate and 0.09% by weight Bis (tert.butylperoxy) -2,5-dimethylhexane, in each case based on the polypropylene homopolymer, dosed continuously.
  • the resulting modified polypropylene has an IR spectroscopic determined bound butadiene content of 1.0% by weight and a Melt index of 0.85 g / 10 min at 230 ° C / 2.16 kp.
  • a polypropylene mixture is made up of 99 mass% of a polypropylene homopolymer (melt index 18.2 g / 10 min at 230 ° C / 2.16 kg), 1 mass % of a modified polypropylene (melt index of 0.85 g / 10 min at 230 ° C / 2.16 kp, content of bound butadiene 1.0% by weight), 0.25% by mass of 2-tert-butyl-4.6 -diisopropylphenol, 0.2 mass% bis - 2,2,6,6 - tetramethyl-4-piperidyl sebazate and 0.2 mass% calcium stearate (auxiliaries in each case based on the sum of the propylene polymers) melted at a melt temperature of 272 ° C.
  • a polypropylene homopolymer melt index 18.2 g / 10 min at 230 ° C / 2.16 kg
  • a modified polypropylene melt index of 0.85 g / 10 min at
  • the melt is transferred to the spinnerets with the melt pump and drawn off at a spinning nozzle temperature of 290 ° C through the blow shaft, which is cooled with compressed air at a temperature of 20 ° C, at a take-off speed of 3000 m / min by high-speed godets and wound up.
  • the resulting filament yarn of the EMR1.1 pre-oriented yarn type has a total titer of 252 dtex, a tensile strength of 19.5 cN / tex and a tensile elongation of 202%.
  • a polypropylene compound that is 100% by mass of an unmodified polypropylene homopolymer (melt index 18.2 g / 10 min at 230 ° C / 2.16 kg), 0.2% by mass of pentaerythritol tetrakis [3- (3,5-ditert.butyl-4-hydroxy-phenyl)] propionate, 0.2 mass% bis - 2,2,6,6-tetramethyl-4-piperidyl sebazate and 0.2% by mass of magnesium stearate (auxiliaries in each case based on the polypropylene homopolymer) at a melt temperature of 275 ° C in Plasticizing extruder melted.
  • the melt is closed with the melt pump transferred to the spinnerets and at a temperature of the spinnerets of 290 ° C through the blow duct, which with compressed air at a temperature of 20 ° C is cooled, with a take-off speed of 3000 m / min by high-speed Stripped and wound up godets.
  • the resulting filament yarn from EMR1.1 pre-oriented yarn type has a total titer of 254 dtex, one Tensile strength of 23.7 cN / tex and an elongation of 124%.
  • a powdery random polypropylene copolymer (melt index of 0.85 g / 10 min at 230 ° C / 2.16 kp, average particle diameter 0.85 mm) is continuously metered into a continuous heatable continuous mixer. Furthermore, 0.05% by weight of hydrotalcite, 0.05% by weight of calcium stearate and 0.45% by weight of tert-butyl peroxybenzoate, in each case based on the polypropylene copolymer, are metered continuously into the continuous mixer. With homogeneous mixing at 70 ° C., the polypropylene homopolymer loaded with thermally disintegrating radical generator and auxiliary material is at a residence time of 4 min at 70 ° C.
  • the resulting modified polypropylene copolymer has a content of bound divinylbenzene, determined by IR spectroscopy, of 0.32% by weight and a melt index of 1.35 g / 10 min at 230 ° C./2.16 kp.
  • the melt becomes the spinnerets with the melt pump transferred and at a temperature of the spinnerets of 285 ° C by the Blow duct, which is cooled with compressed air at a temperature of 20 ° C, with a take-off speed of 3000 m / min due to high-speed godets deducted and placed in a jug.
  • the discarded is used for the discontinuous production of staple fibers Polypropylene thread in a laboratory post-processing line made of stretching unit, crimper and cutting machine of a stretch by 850% and two-dimensional Rippled and cut into segments.
  • One after the stretching unit has a non-crimped sample (thread diameter 0.2 mm) a tensile strength of 540 MPa and an elongation of 46%.
  • the fiber segments are thermobonded on a laboratory calender a nonwoven processed, which has a basis weight of 60 g / m 2 and a longitudinal / transverse strength ratio of 2.6: 1.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Artificial Filaments (AREA)
  • Nonwoven Fabrics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Woven Fabrics (AREA)
EP98107669A 1997-05-14 1998-04-28 Polyolefinfasern und Polyolefingarne und daraus hergestellte textile Flächengebilde Expired - Lifetime EP0878567B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE1997120135 DE19720135B4 (de) 1997-05-14 1997-05-14 Nichtnachverstreckte Polyolefinfasern und Polyolefingarne hoher Festigkeit und Dehnung und daraus hergestellte textile Flächengebilde
DE19720135 1997-05-14
DE19722579 1997-05-30
DE1997122579 DE19722579B4 (de) 1997-05-30 1997-05-30 Fasern und Garne hoher Festigkeit und Dehnung, Verfahren zu deren Herstellung und Verwendung

Publications (3)

Publication Number Publication Date
EP0878567A2 EP0878567A2 (de) 1998-11-18
EP0878567A3 EP0878567A3 (de) 2001-01-17
EP0878567B1 true EP0878567B1 (de) 2004-09-29

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EP98107669A Expired - Lifetime EP0878567B1 (de) 1997-05-14 1998-04-28 Polyolefinfasern und Polyolefingarne und daraus hergestellte textile Flächengebilde

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US (2) US6218011B1 (cs)
EP (1) EP0878567B1 (cs)
CZ (1) CZ298667B6 (cs)
DE (1) DE59812014D1 (cs)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19738051A1 (de) * 1997-09-01 1999-03-04 Targor Gmbh Spritzgieß-Artikel aus Metallocen-Polypropylen
DE10026579A1 (de) * 2000-05-30 2001-12-06 Basell Polyolefine Gmbh Verfahren zur Herstellung von für das Faserspinnen geeigneten Propylenpolymerisaten
EP1213376A1 (en) * 2000-12-07 2002-06-12 Borealis GmbH Non-postdrawn polyolefin fibers with high strength
EP1213375A1 (en) * 2000-12-07 2002-06-12 Borealis GmbH Non-postdrawn polyolefin with high tenacity
US6541554B2 (en) * 2001-05-17 2003-04-01 Milliken & Company Low-shrink polypropylene fibers
US6656404B2 (en) * 2001-05-17 2003-12-02 Milliken & Company Methods of making low-shrink polypropylene fibers
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EP0878567A2 (de) 1998-11-18
US20020002241A1 (en) 2002-01-03
DE59812014D1 (de) 2004-11-04
US6218011B1 (en) 2001-04-17
US6537473B2 (en) 2003-03-25
CZ298667B6 (cs) 2007-12-12
CZ143798A3 (cs) 1999-05-12

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