EP1637632B1 - Device for producing filaments from thermoplastic material - Google Patents

Device for producing filaments from thermoplastic material Download PDF

Info

Publication number
EP1637632B1
EP1637632B1 EP04022248A EP04022248A EP1637632B1 EP 1637632 B1 EP1637632 B1 EP 1637632B1 EP 04022248 A EP04022248 A EP 04022248A EP 04022248 A EP04022248 A EP 04022248A EP 1637632 B1 EP1637632 B1 EP 1637632B1
Authority
EP
European Patent Office
Prior art keywords
filaments
blown air
nozzle
sides
plastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04022248A
Other languages
German (de)
French (fr)
Other versions
EP1637632A1 (en
Inventor
Detlef Frey
Hans Georg Geus
Michael Latinski
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.)
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Original Assignee
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Reifenhaeuser GmbH and Co KG Maschinenenfabrik filed Critical Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Priority to ES04022248T priority Critical patent/ES2287619T3/en
Priority to DK04022248T priority patent/DK1637632T3/en
Priority to AT04022248T priority patent/ATE368759T1/en
Priority to DE502004004519T priority patent/DE502004004519D1/en
Priority to EP04022248A priority patent/EP1637632B1/en
Priority to MXPA05009748A priority patent/MXPA05009748A/en
Priority to KR1020050085835A priority patent/KR100783450B1/en
Priority to CN2005101040755A priority patent/CN1757800B/en
Priority to US11/226,231 priority patent/US20060061006A1/en
Priority to JP2005269633A priority patent/JP2006083511A/en
Priority to BRPI0504077-9A priority patent/BRPI0504077B1/en
Publication of EP1637632A1 publication Critical patent/EP1637632A1/en
Application granted granted Critical
Publication of EP1637632B1 publication Critical patent/EP1637632B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—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
    • 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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • D01D4/025—Melt-blowing or solution-blowing dies
    • 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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • 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
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching

Definitions

  • the invention relates to a device for producing filaments of thermoplastic material, comprising a meltblown die having a plastic guide core with at least one row of nozzle holes for the exit of the plastic melt and further arranged on both sides of the plastic guide core feed means for primary blowing air, with which the filaments in the region of the mouths of the nozzle bores can be acted upon on both sides with the primary blowing air.
  • endless filaments are produced with the device according to the invention.
  • the filaments are deposited on a laying device to form a random fleece or meltblown fleece.
  • the meltblown webs produced in this way are used as filters or in filters.
  • the technical problem underlying the invention to provide a device of the type mentioned, with the simple and functionally reliable manner, the filament diameter can be effectively reduced, so that diameters smaller than 1 .mu.m and in particular also can be achieved significantly less than 1 micron.
  • the invention teaches an apparatus for producing filaments of thermoplastic material, - having a meltblown die, which has a plastic guide core with at least one row of nozzle holes for the exit of the plastic melt and which further comprises on both sides of the plastic guide core arranged feeding means for primary blowing air, with which the filaments in the region of the mouths of the nozzle bores can be acted upon on both sides with the Primärblas Kunststoff and wherein at least one supply device for secondary blowing air is provided, with which the filaments below the meltblown blow head can be acted on laterally with secondary blowing air having a temperature higher than 50 ° C.
  • the exit of the plastic melt or polymer melt from the nozzle bores of the plastic guide core takes place in the form of plastic streams, which form the filaments as it were.
  • the Primärblas Kunststoff or Primärblas Kunststoffstrahlen are expediently guided acute angle against each other below the nozzle holes. It is within the scope of the invention that the primary blowing air is supplied through corresponding gaps on the plastic guide core in the form of Blas Kunststoff vomstrahlen.
  • the primary blowing air is supplied on both sides by gaps or channels between plastic guide core and die lips, and preferably, the gap width of the gap is adjustable.
  • the gap width of the gap is adjustable below the plastic guide core thus expediently two opposite nozzle lips arranged, which are preferably adjustable, so that the gap width of the gaps between the plastic guide core and the die lips is adjustable.
  • the distance x between the plastic guide core tip and the (imaginary) horizontal extension of the nozzle lip tip is expediently adjustable.
  • secondary blowing air below the meltblown blowing head is additionally blown from the side onto the filaments or onto the filament curtain.
  • the secondary blowing air at an angle ⁇ of 50 ° to 90 °, preferably from 65 ° to 90 ° and preferably from 75 ° to 90 ° to a running through a nozzle bore imaginary line or vertical sideways or is inflatable from the side.
  • the angle ⁇ is thus, so to speak, the angle between a Sekundärblasluftstrahl and said imaginary line or vertical.
  • the Sekundärblasluftstrahlen are thus at an angle ⁇ to the imaginary lines extending through the nozzle bores or vertical to the emerging from these nozzle bores filaments inflatable.
  • the direction of the imaginary straight line corresponds to the primary (undeflected) discharge direction of the filaments from the nozzle bores.
  • the Sekundärblas Kunststoff is orthogonal or substantially orthogonal to a running through a nozzle bore imaginary straight line or vertical inflatable.
  • Essentially orthogonal means that the angle ⁇ is 80 ° to 90 ° and preferably 85 ° to 90 °.
  • the secondary blowing air is blown at high speed to the filaments or to the filament curtain.
  • the vibrations of the filaments or of the threads are amplified both in their frequency and in their amplitude.
  • the invention is insofar the realization on the basis that additional draw points or additional points of the thread draw are generated in this way, so that a very effective and extensive stretching of the filaments is possible.
  • the at least one feed device for the secondary blowing air is set up with the proviso that secondary blowing air can be inflated with an elevated temperature compared with the room temperature (20 ° C.). It is within the scope of the invention that while Sekundärblas Kunststoff with a temperature higher than 50 ° C, preferably with a temperature higher than 60 ° C is inflatable. Particularly preferred is a secondary blowing air temperature between 65 ° C and 90 ° C, and more preferably between 70 ° C and 80 ° C. The heated secondary blowing air preferably has a relative humidity of less than 70%, preferably less than 50% and very preferably less than 20%. The invention is based on the finding that the thermoplastic phase of the filaments is, as it were, lengthened by blowing the warm or hot secondary blowing air so that the filaments remain stretchable on their way. In this way, a very effective stretching is thus achieved.
  • feeding devices for the secondary blowing air are arranged with the proviso that the filaments or the filament curtain can be acted upon by secondary blowing air from both sides.
  • supply means are provided on both sides of the filament curtain, so that the bidirectional loading of the filament curtain with secondary blowing air is possible.
  • the blowing with the secondary blowing air from at least one side of the filaments or the filament curtain is constant in time.
  • Temporal constant blowing means in particular, that the blowing speed of the secondary blowing air remains constant over time.
  • the blowing with the secondary blowing air is preferably constant in time from both sides of the filaments or the filament curtain.
  • the blowing with the secondary blowing air from at least one side of the filaments or the filament curtain is pulsating (i.e., not constant in time).
  • pulsating blowing means that the blowing speed of the secondary blowing air changes over time.
  • the speed of the secondary blowing air can change, for example, in a pulsating or alternating manner between 0 and a speed value v1.
  • the device according to the invention has a depositing device on which the filaments can be deposited as random or meltblown fleece.
  • the meltblown web produced in this way is used in a very preferred embodiment of the invention as a filter or in filters and in particular in fine filters.
  • the invention also provides a process for the production of the filaments of thermoplastic material, wherein - as described - is worked both with the Primärblas Kunststoffanblasung and with the Sekundärblas Kunststoffanblasung.
  • the invention furthermore relates to the use of the filaments or of a meltblown nonwoven produced with the filaments as filter material.
  • the invention is based on the finding that with a device according to the invention or with the corresponding method according to the invention filaments can be produced, which are characterized by a surprisingly small diameter. It can easily filaments with a filament diameter smaller than 1 micron and also be produced with a filament diameter significantly smaller than 1 micron.
  • the invention is further based on the finding that the filaments are effectively excited to additional oscillations with the aid of the secondary blowing-off of the invention, and that the number of draw points or drawing regions is thereby effectively increased. In combination with this, special importance is attached to the blowing of secondary higher-temperature blowing air, since this can effectively prolong the thermoplastic phase of the filaments.
  • FIGURE shows a schematic representation of a section through a device according to the invention.
  • the meltblown die 2 is equipped with a plastic guide core 3, which in the embodiment has a number of nozzle holes 4 for the exit of the plastic melt.
  • the row of nozzle bores 4 extends perpendicular to the plane of the paper.
  • supply means for secondary blowing air are present on both sides of the filament curtain from the filaments 1, with which the filaments below the meltblown blow head 2 are laterally charged with secondary blowing air.
  • This Sekundärblas Kunststoffbeetzhausung has been indicated in the figure by the arrows B.
  • the secondary blowing air can be inflated orthogonally or essentially orthogonally to the imaginary straight lines 7 passing through the nozzle bores 4.
  • the angle ⁇ between the Sekundärblas Kunststoffanblasung or between a Sekundärblas Kunststoff and a straight line 7 is therefore 90 ° or approximately 90 °.
  • an oscillation of the filaments 1 is effectively enhanced. In this way, additional draw points or points of Fadenunterziehung to the filaments.
  • secondary blowing air having a temperature higher than 50 ° C is blown.
  • the temperature of the secondary blowing air is 65 ° C to 85 ° C, preferably 70 ° C to 80 ° C.
  • a depositing device 8 which is preferably formed and in the embodiment as a wire belt.
  • the filaments are expediently stored as not shown meltblown fleece.
  • the meltblown fleece is particularly suitable for filter applications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The melt blowing head (2) has a core (3) feeding molten plastic to a row of nozzle bores (4). On each side of the core, primary air is blown against the sides of the filaments, close to the nozzle openings. At least one secondary blowing-air supply is provided. This impinges on the filaments (1) from the sides, below the blowing head. Primary air is supplied on both sides through gaps (5) between the core and nozzle lips (6). Gap width (w) and spacing (x) between core tip and a notional horizontal extension (broken line) of the nozzle lips, is adjustable. The secondary air blast is introduced preferably at 75[deg]-90[deg] with respect to the axis (7) through the nozzle bore (4). It is introduced at 90[deg]. It is heated above room temperature, to preferably 60[deg]C or more. Its relative humidity is preferably less than 20%. It is blown from both sides against the filaments. Blowing from at least one side is constant. Blowing from at least one side is pulsed. A unit (8) is provided, onto which the filaments are laid, to form a spun-bonded fleece fabric.

Description

Die Erfindung betrifft eine Vorrichtung zur Herstellung von Filamenten aus thermoplastischem Kunststoff, mit einem Meltblown-Blaskopf, der einen Kunststoffführungskern mit zumindest einer Reihe von Düsenbohrungen für den Austritt der Kunststoffschmelze aufweist und der fernerhin beidseitig des Kunststoffführungskernes angeordnete Zuführungseinrichtungen für Primärblasluft aufweist, mit denen die Filamente im Bereich der Mündungen der Düsenbohrungen beidseitig mit der Primärblasluft beaufschlagbar sind. - Es liegt im Rahmen der Erfindung, dass mit der erfindungsgemäßen Vorrichtung endlose Filamente hergestellt werden. Es liegt fernerhin im Rahmen der Erfindung, dass die Filamente auf einer Ablegeeinrichtung zu einem Wirrvlies bzw. Meltblown-Vlies abgelegt werden. Vorzugsweise werden die auf diese Weise erzeugten Meltblown-Vliese als Filter bzw. in Filtern verwendet.The invention relates to a device for producing filaments of thermoplastic material, comprising a meltblown die having a plastic guide core with at least one row of nozzle holes for the exit of the plastic melt and further arranged on both sides of the plastic guide core feed means for primary blowing air, with which the filaments in the region of the mouths of the nozzle bores can be acted upon on both sides with the primary blowing air. It is within the scope of the invention that endless filaments are produced with the device according to the invention. It is furthermore within the scope of the invention that the filaments are deposited on a laying device to form a random fleece or meltblown fleece. Preferably, the meltblown webs produced in this way are used as filters or in filters.

Vorrichtungen der eingangs genannten Art sind aus der Praxis in verschiedenen Varianten bekannt. Viele dieser Vorrichtungen haben sich grundsätzlich bewährt. Die Durchmesser der Filamente, die mit diesen Vorrichtungen erzeugt werden können, liegen in der Regel im Bereich von 1 µm bzw. sind größer als 1 µm. Eine signifikante Reduzierung dieser Filamentdurchmesser bereitete bislang Schwierigkeiten. Man hat versucht die Luftmenge, die Geschwindigkeit und die Temperatur der Primärblasluft so zu verändern bzw. zu steuern, dass der Filamentdurchmesser verringert wird. In US 5,075,068 und WO 94/09200 ist die Herstellung von Filamenten beschrieben, die durch die Extrusion eines thermoplastischen Kunststoffes und Verstreckung mit Primärblasluft und Sekundärblasluft erfolgt. In WO 92/18677 ist darüber hinaus ein Verfahren beschrieben, in dem neben Primärblasluft auch Sekundärblasluft eingesetzt wird, wobei die Sekundärblasluft die Orientierung der Filamente beeinflussen soll und auch als Kühlmedium fungiert. In US 4,622,259 ist ein Verfahren dargestellt, das ebenfalls die Herstellung von Filamenten betrifft. Dabei werden die aus dem Blaskopf austretenden Filamente zur Verstreckung und Verfestigung zuerst durch heiße Primärblasluft und anschließend durch kühlende Sekundärblasluft, deren Temperatur maximal der Raumtemperatur entspricht, geführt. In US 5,523,033 ist zudem ein Verfahren zur Herstellung von polymeren Filamenten beschrieben, bei dem die extrudierten Filamente mit Primärblasluft und Sekundärblasluft behandelt werden, wobei sowohl die Primärblasluft als auch die Sekundärblasluft gepulst auf die Filamente einwirken. Auf diese Weise soll die Filamentdicke reduziert werden.Devices of the type mentioned are known from practice in different variants. Many of these devices have proven themselves in principle. The diameters of the filaments which can be produced with these devices are generally in the range of 1 μm or larger than 1 μm. A significant reduction in these filament diameters has been difficult. Attempts have been made to change or control the amount of air, the speed and the temperature of the primary blowing air in such a way that the filament diameter is reduced. In US 5,075,068 and WO 94/09200 is described the production of filaments, which takes place by the extrusion of a thermoplastic material and drawing with Primärblasluft and Sekundärblasluft. In WO 92/18677 In addition, a method is described in which in addition to primary blowing air and secondary blowing air is used, the secondary blowing air to influence the orientation of the filaments and also acts as a cooling medium. In US 4,622,259 is a Process, which also relates to the production of filaments. The emerging from the blow head filaments for drawing and solidification are first by hot Primärblasluft and then by cooling Sekundärblasluft whose temperature corresponds to a maximum of room temperature, out. In US 5,523,033 there is also described a method of making polymeric filaments wherein the extruded filaments are treated with primary blowing air and secondary blowing air, wherein both the primary blowing air and the secondary blowing air pulsed act on the filaments. In this way, the filament thickness is to be reduced.

Diese Maßnahmen haben jedoch nicht zu zufriedenstellenden Ergebnissen geführt. Sehr geringe Filamentdurchmesser bzw. Filamentdurchmesser, die deutlich kleiner sind als 1 µm wären sehr vorteilhaft für die Erzeugung von Meltblown-Vliesen zur Verwendung in Filtern bzw. Feinfiltern.However, these measures have not led to satisfactory results. Very small filament diameters or filament diameters, which are significantly smaller than 1 μm, would be very advantageous for the production of meltblown webs for use in filters or fine filters.

Dementsprechend liegt der Erfindung das technische Problem zugrunde, eine Vorrichtung der eingangs genannten Art anzugeben, mit der auf einfache und funktionssichere Weise der Filamentdurchmesser effektiv reduziert werden kann, so dass Durchmesser kleiner als 1 µm und insbesondere auch deutlich kleiner als 1 µm erzielt werden können.Accordingly, the technical problem underlying the invention to provide a device of the type mentioned, with the simple and functionally reliable manner, the filament diameter can be effectively reduced, so that diameters smaller than 1 .mu.m and in particular also can be achieved significantly less than 1 micron.

Zur Lösung dieses technischen Problems lehrt die Erfindung eine Vorrichtung zur Herstellung von Filamenten aus thermoplastischem Kunststoff, - mit einem Meltblown-Blaskopf, der einen Kunststoffführungskern mit zumindest einer Reihe von Düsenbohrungen für den Austritt der Kunststoffschmelze aufweist
und der fernerhin beidseits des Kunststoffführungskernes angeordnete Zuführungseinrichtungen für Primärblasluft aufweist, mit denen die Filamente im Bereich der Mündungen der Düsenbohrungen beidseitig mit der Primärblasluft beaufschlagbar sind
und wobei zumindest eine Zuführungseinrichtung für Sekundärblasluft vorgesehen ist, mit der die Filamente unterhalb des Meltblown-Blaskopfes seitlich mit Sekundärblasluft mit einer Temperatur höher 50 °C beaufschlagbar sind.To solve this technical problem, the invention teaches an apparatus for producing filaments of thermoplastic material, - having a meltblown die, which has a plastic guide core with at least one row of nozzle holes for the exit of the plastic melt
and which further comprises on both sides of the plastic guide core arranged feeding means for primary blowing air, with which the filaments in the region of the mouths of the nozzle bores can be acted upon on both sides with the Primärblasluft
and wherein at least one supply device for secondary blowing air is provided, with which the filaments below the meltblown blow head can be acted on laterally with secondary blowing air having a temperature higher than 50 ° C.

Der Austritt der Kunststoffschmelze bzw. Polymerschmelze aus den Düsenbohrungen des Kunststoffführungskernes findet in Form von Kunststoffströmen statt, die gleichsam die Filamente bilden. Die Primärblasluft bzw. die Primärblasluftstrahlen sind unterhalb der Düsenbohrungen zweckmäßigerweise spitzwinklig gegeneinander geführt. Es liegt im Rahmen der Erfindung, dass die Primärblasluft durch entsprechende Spalte am Kunststoffführungskern in Form von Blasluftflächenstrahlen zugeführt wird.The exit of the plastic melt or polymer melt from the nozzle bores of the plastic guide core takes place in the form of plastic streams, which form the filaments as it were. The Primärblasluft or Primärblasluftstrahlen are expediently guided acute angle against each other below the nozzle holes. It is within the scope of the invention that the primary blowing air is supplied through corresponding gaps on the plastic guide core in the form of Blasluftflächenstrahlen.

Zweckmäßigerweise wird die Primärblasluft beidseitig durch Spalte bzw. Kanäle zwischen Kunststoffführungskern und Düsenlippen zugeführt und vorzugsweise ist dabei die Spaltweite der Spalte einstellbar. Unterhalb des Kunststoffführungskerns sind also zweckmäßigerweise zwei gegenüberliegende Düsenlippen angeordnet, die vorzugsweise verstellbar sind, so dass die Spaltweite der Spalte zwischen Kunststoffführungskern und Düsenlippen einstellbar ist. Außerdem ist zweckmäßigerweise der Abstand x zwischen der Kunststoffführungskernspitze und der (gedachten) horizontalen Verlängerung der Düsenlippenspitze einstellbar.Conveniently, the primary blowing air is supplied on both sides by gaps or channels between plastic guide core and die lips, and preferably, the gap width of the gap is adjustable. Below the plastic guide core thus expediently two opposite nozzle lips arranged, which are preferably adjustable, so that the gap width of the gaps between the plastic guide core and the die lips is adjustable. In addition, the distance x between the plastic guide core tip and the (imaginary) horizontal extension of the nozzle lip tip is expediently adjustable.

Erfindungsgemäß wird zusätzlich Sekundärblasluft unterhalb des Meltblown-Blaskopfes von der Seite an die Filamente bzw. an den Filamentvorhang angeblasen. Es liegt dabei im Rahmen der Erfindung, dass die Sekundärblasluft mit einem Winkel α von 50° bis 90°, vorzugsweise von 65° bis 90° und bevorzugt von 75° bis 90° zu einer durch eine Düsenbohrung verlaufenden gedachten Geraden bzw. Vertikalen seitlich bzw. von der Seite her anblasbar ist. Bei dem Winkel α handelt es sich also gleichsam um den Winkel zwischen einem Sekundärblasluftstrahl und der genannten gedachten Geraden bzw. Vertikalen. Die Sekundärblasluftstrahlen sind also mit einem Winkel α zu durch die Düsenbohrungen verlaufenden gedachten Geraden bzw. Vertikalen an die aus diesen Düsenbohrungen austretenden Filamente anblasbar. Es liegt im Rahmen der Erfindung, dass die Richtung der gedachten Geraden der primären (unabgelenkten) Austrittsrichtung der Filamente aus den Düsenbohrungen entspricht.According to the invention, secondary blowing air below the meltblown blowing head is additionally blown from the side onto the filaments or onto the filament curtain. It is within the scope of the invention that the secondary blowing air at an angle α of 50 ° to 90 °, preferably from 65 ° to 90 ° and preferably from 75 ° to 90 ° to a running through a nozzle bore imaginary line or vertical sideways or is inflatable from the side. The angle α is thus, so to speak, the angle between a Sekundärblasluftstrahl and said imaginary line or vertical. The Sekundärblasluftstrahlen are thus at an angle α to the imaginary lines extending through the nozzle bores or vertical to the emerging from these nozzle bores filaments inflatable. It is within the scope of the invention that the direction of the imaginary straight line corresponds to the primary (undeflected) discharge direction of the filaments from the nozzle bores.

Nach besonders bevorzugter Ausführungsform der Erfindung ist die Sekundärblasluft orthogonal bzw. im Wesentlichen orthogonal zu einer durch eine Düsenbohrung verlaufenden gedachten Geraden bzw. Vertikalen anblasbar. Im Wesentlichen orthogonal meint dabei, dass der Winkel α 80° bis 90° und bevorzugt 85° bis 90° beträgt. - Es liegt im Rahmen der Erfindung, dass die Sekundärblasluft mit hoher Geschwindigkeit an die Filamente bzw. an den Filamentvorhang angeblasen wird. Dadurch werden erfindungsgemäß die Schwingungen der Filamente bzw. der Fäden sowohl in ihrer Frequenz als auch in ihrer Amplitude verstärkt. Der Erfindung liegt insoweit die Erkenntnis zugrunde, dass auf diese Weise zusätzliche Verstreckpunkte bzw. zusätzliche Punkte der Fadenunterziehung erzeugt werden, so dass eine sehr effektive und weitgehende Verstreckung der Filamente möglich ist.According to a particularly preferred embodiment of the invention, the Sekundärblasluft is orthogonal or substantially orthogonal to a running through a nozzle bore imaginary straight line or vertical inflatable. Essentially orthogonal means that the angle α is 80 ° to 90 ° and preferably 85 ° to 90 °. - It is within the scope of the invention that the secondary blowing air is blown at high speed to the filaments or to the filament curtain. As a result, according to the invention, the vibrations of the filaments or of the threads are amplified both in their frequency and in their amplitude. The invention is insofar the realization on the basis that additional draw points or additional points of the thread draw are generated in this way, so that a very effective and extensive stretching of the filaments is possible.

Es liegt im Rahmen der Erfindung, dass die zumindest eine Zuführungseinrichtung für die Sekundärblasluft mit der Maßgabe eingerichtet ist, dass Sekundärblasluft mit im Vergleich zur Raumtemperatur (20 °C) erhöhter Temperatur anblasbar ist. Es liegt im Rahmen der Erfindung, dass dabei Sekundärblasluft mit einer Temperatur höher 50 °C, vorzugsweise mit einer Temperatur höher 60 °C anblasbar ist. Besonders bevorzugt ist eine Sekundärblaslufttemperatur zwischen 65 °C und 90 °C und sehr bevorzugt zwischen 70 °C und 80 °C. Vorzugsweise weist die erwärmte Sekundärblasluft eine relative Luftfeuchtigkeit kleiner 70 %, bevorzugt kleiner 50 % und sehr bevorzugt kleiner 20 % auf. Der Erfindung liegt die Erkenntnis zugrunde, dass durch Anblasung der warmen bzw. heißen Sekundärblasluft die thermoplastische Phase der Filamente gleichsam verlängert wird, so dass die Filamente auf ihrem Weg lange verstreckbar bleiben. Auf diese Weise wird somit eine sehr effektive Verstreckung erzielt.It is within the scope of the invention that the at least one feed device for the secondary blowing air is set up with the proviso that secondary blowing air can be inflated with an elevated temperature compared with the room temperature (20 ° C.). It is within the scope of the invention that while Sekundärblasluft with a temperature higher than 50 ° C, preferably with a temperature higher than 60 ° C is inflatable. Particularly preferred is a secondary blowing air temperature between 65 ° C and 90 ° C, and more preferably between 70 ° C and 80 ° C. The heated secondary blowing air preferably has a relative humidity of less than 70%, preferably less than 50% and very preferably less than 20%. The invention is based on the finding that the thermoplastic phase of the filaments is, as it were, lengthened by blowing the warm or hot secondary blowing air so that the filaments remain stretchable on their way. In this way, a very effective stretching is thus achieved.

Nach besonders bevorzugter Ausführungsform der Erfindung sind Zuführungseinrichtungen für die Sekundärblasluft mit der Maßgabe angeordnet, dass die Filamente bzw. der Filamentvorhang von beiden Seiten mit Sekundärblasluft beaufschlagbar sind bzw. ist. Zweckmäßigerweise sind also Zuführungseinrichtungen an beiden Seiten des Filamentvorhangs vorgesehen, so dass die beidseitige Beaufschlagung des Filamentvorhangs mit Sekundärblasluft möglich ist.According to a particularly preferred embodiment of the invention, feeding devices for the secondary blowing air are arranged with the proviso that the filaments or the filament curtain can be acted upon by secondary blowing air from both sides. Appropriately, therefore, supply means are provided on both sides of the filament curtain, so that the bidirectional loading of the filament curtain with secondary blowing air is possible.

Nach einer Ausführungsform der Erfindung erfolgt die Anblasung mit der Sekundärblasluft von zumindest einer Seite der Filamente bzw. des Filamentvorhangs zeitlich konstant. Zeitlich konstante Anblasung meint dabei insbesondere, dass die Anblasgeschwindigkeit der Sekundärblasluft zeitlich konstant bleibt. Nach dieser Ausführungsform erfolgt die Anblasung mit der Sekundärblasluft vorzugsweise von beiden Seiten der Filamente bzw. des Filamentvorhangs zeitlich konstant.According to one embodiment of the invention, the blowing with the secondary blowing air from at least one side of the filaments or the filament curtain is constant in time. Temporal constant blowing means in particular, that the blowing speed of the secondary blowing air remains constant over time. According to this embodiment, the blowing with the secondary blowing air is preferably constant in time from both sides of the filaments or the filament curtain.

Nach einer anderen Ausführungsform der Erfindung erfolgt die Anblasung mit der Sekundärblasluft von zumindest einer Seite der Filamente bzw. des Filamentvorhangs pulsierend (d. h. zeitlich nicht konstant). Pulsierende Anblasung meint dabei insbesondere, dass die Anblasgeschwindigkeit der Sekundärblasluft sich im Laufe der Zeit ändert. Dabei kann die Geschwindigkeit der Sekundärblasluft beispielsweise pulsierend bzw. alternierend zwischen 0 und einem Geschwindigkeitswert v1 wechseln.According to another embodiment of the invention, the blowing with the secondary blowing air from at least one side of the filaments or the filament curtain is pulsating (i.e., not constant in time). In particular, pulsating blowing means that the blowing speed of the secondary blowing air changes over time. In this case, the speed of the secondary blowing air can change, for example, in a pulsating or alternating manner between 0 and a speed value v1.

Es liegt im Rahmen der Erfindung, dass die erfindungsgemäße Vorrichtung eine Ablegeeinrichtung aufweist, auf der die Filamente als Wirrvlies bzw. Meltblown-Vlies ablegbar sind. Das auf diese Weise erzeugte Meltblown-Vlies wird nach sehr bevorzugter Ausführungsform der Erfindung als Filter bzw. in Filtern und insbesondere in Feinfiltern verwendet.It is within the scope of the invention that the device according to the invention has a depositing device on which the filaments can be deposited as random or meltblown fleece. The meltblown web produced in this way is used in a very preferred embodiment of the invention as a filter or in filters and in particular in fine filters.

Gegenstand der Erfindung ist im Übrigen auch ein Verfahren zur Herstellung der Filamente aus thermoplastischem Kunststoff, wobei - wie beschrieben - sowohl mit der Primärblasluftanblasung als auch mit der Sekundärblasluftanblasung gearbeitet wird. Gegenstand der Erfindung ist fernerhin die Verwendung der Filamente bzw. eines mit den Filamenten hergestellten Meltblown-Vlieses als Filtermaterial.The invention also provides a process for the production of the filaments of thermoplastic material, wherein - as described - is worked both with the Primärblasluftanblasung and with the Sekundärblasluftanblasung. The invention furthermore relates to the use of the filaments or of a meltblown nonwoven produced with the filaments as filter material.

Der Erfindung liegt die Erkenntnis zugrunde, dass mit einer erfindungsgemäßen Vorrichtung bzw. mit dem entsprechenden erfindungsgemäßen Verfahren Filamente hergestellt werden können, die sich durch einen überraschend geringen Durchmesser auszeichnen. Es können problemlos Filamente mit einem Filamentdurchmesser kleiner als 1 µm und auch mit einem Filamentdurchmesser deutlich kleiner als 1 µm erzeugt werden. Der Erfindung liegt weiterhin die Erkenntnis zugrunde, dass mit Hilfe der erfindungsgemäßen Sekundärblaslufteinblasung die Filamente effektiv zu zusätzlichen Schwingungen angeregt werden und dass dadurch die Anzahl der Verstreckpunkte bzw. Verstreckbereiche effektiv erhöht wird. In Kombination damit kommt besondere Bedeutung der Anblasung von Sekundärblasluft mit höherer Temperatur zu, da hierdurch die thermoplastische Phase der Filamente wirksam verlängert werden kann. Im Ergebnis wird gleichsam durch die effektiven Zusatzverstreckungen eine überraschend weitgehende Reduzierung des Filamentdurchmessers gegenüber bislang bekannten Maßnahmen erreicht. Diese Filamente mit sehr geringem Durchmesser können zu Meltblown-Vliesen abgelegt werden, die als leistungsstarke Filter bzw. Feinfilter mit hoher Abscheideleistung bei geringem Druckverlust eingesetzt werden können. Insbesondere können bislang bekannte Glasfaserfilter durch erfindungsgemäß erzeugte Meltblown-Vliese ersetzt werden.The invention is based on the finding that with a device according to the invention or with the corresponding method according to the invention filaments can be produced, which are characterized by a surprisingly small diameter. It can easily filaments with a filament diameter smaller than 1 micron and also be produced with a filament diameter significantly smaller than 1 micron. The invention is further based on the finding that the filaments are effectively excited to additional oscillations with the aid of the secondary blowing-off of the invention, and that the number of draw points or drawing regions is thereby effectively increased. In combination with this, special importance is attached to the blowing of secondary higher-temperature blowing air, since this can effectively prolong the thermoplastic phase of the filaments. As a result, as a result of the effective additional dilutions, a surprisingly substantial reduction of the filament diameter is achieved in comparison to previously known measures. These very small diameter filaments can be deposited into meltblown webs that can be used as high performance filters or fine filters with high separation efficiency and low pressure loss. In particular, previously known glass fiber filters can be replaced by meltblown webs produced according to the invention.

Nachfolgend wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Die einzige Figur zeigt in schematischer Darstellung einen Schnitt durch eine erfindungsgemäße Vorrichtung.The invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment. The single FIGURE shows a schematic representation of a section through a device according to the invention.

Dargestellt ist eine Vorrichtung zur Herstellung von Filamenten 1 aus thermoplastischem Kunststoff, wobei die Vorrichtung einen Meltblown-Blaskopf 2 aufweist. Der Meltblown-Blaskopf 2 ist mit einem Kunststoffführungskern 3 ausgestattet, der im Ausführungsbeispiel eine Reihe von Düsenbohrungen 4 für den Austritt der Kunststoffschmelze aufweist. Die Reihe der Düsenbohrungen 4 erstreckt sich senkrecht zur Papierebene.Shown is a device for producing filaments 1 of thermoplastic material, wherein the device comprises a meltblown die 2. The meltblown die 2 is equipped with a plastic guide core 3, which in the embodiment has a number of nozzle holes 4 for the exit of the plastic melt. The row of nozzle bores 4 extends perpendicular to the plane of the paper.

Beidseits des Kunststoffführungskernes 3 sind nicht näher dargestellte Zuführungseinrichtungen angeordnet, mit denen die Filamente 1 im Bereich der Mündungen der Düsenbohrungen 4 beidseitig mit der Primärblasluft beaufschlagbar sind. Die beidseitige Primärblasluftbeaufschlagung ist im Ausführungsbeispiel durch die beiden Pfeile A angedeutet. In der Figur ist erkennbar, dass die Primärblasluft bzw. die Primärblasluftflächenstrahlen unterhalb der Düsenbohrung 4 spitzwinklig gegeneinander geführt sind. Die Primärblasluft wird beidseitig durch Spalte 5 zwischen Kunststoffführungskern 3 und den Düsenlippen 6 zugeführt. Dabei sind zweckmäßigerweise die Düsenlippen 6 verstellbar, so dass die Spaltweite w einstellbar ist. Vorzugsweise und im Ausführungsbeispiel ist auch der Abstand x zwischen der Spitze des Kunststoffführungskernes 3 und der horizontalen Verlängerung der Düsenlippenspitzen einstellbar.On both sides of the plastic guide core 3 supply means not shown are arranged, with which the filaments 1 in the mouths of the nozzle bores 4 are acted on both sides with the Primärblasluft. The bilateral Primärblasluftbeaufschlagung is indicated in the embodiment by the two arrows A. In the figure, it can be seen that the primary blowing air or the Primärblasluftflächenstrahlen are guided at an acute angle below the nozzle bore 4 against each other. The primary blowing air is supplied on both sides by column 5 between the plastic guide core 3 and the die lips 6. In this case, the nozzle lips 6 are expediently adjustable, so that the gap width w is adjustable. Preferably and in the embodiment, the distance x between the tip of the plastic guide core 3 and the horizontal extension of the nozzle lip tips is adjustable.

Erfindungsgemäß sind beidseitig des Filamentvorhangs aus den Filamenten 1 nicht näher dargestellte Zuführungseinrichtungen für Sekundärblasluft vorhanden, mit der die Filamente unterhalb des Meltblown-Blaskopfes 2 seitlich mit Sekundärblasluft beaufschlagt werden. Diese Sekundärblasluftbeaufschlagung ist in der Figur durch die Pfeile B angedeutet worden. In der Figur ist weiterhin erkennbar, dass die Sekundärblasluft nach bevorzugter Ausführungsform der Erfindung orthogonal bzw. im Wesentlichen orthogonal zu den durch die Düsenbohrungen 4 verlaufenden gedachten Geraden 7 anblasbar ist. Der Winkel α zwischen der Sekundärblasluftanblasung bzw. zwischen einem Sekundärblasluftstrahl und einer Geraden 7 beträgt also 90° oder in etwa 90°. In der Figur ist angedeutet worden, dass aufgrund der Anblasung mit Sekundärluft hoher Geschwindigkeit eine Schwingung der Filamente 1 effektiv verstärkt wird. Auf diese Weise ergeben sich zusätzliche Verstreckpunkte bzw. Punkte der Fadenunterziehung an den Filamenten.According to the invention, supply means for secondary blowing air, not shown in greater detail, are present on both sides of the filament curtain from the filaments 1, with which the filaments below the meltblown blow head 2 are laterally charged with secondary blowing air. This Sekundärblasluftbeaufschlagung has been indicated in the figure by the arrows B. It can also be seen in the figure that according to a preferred embodiment of the invention, the secondary blowing air can be inflated orthogonally or essentially orthogonally to the imaginary straight lines 7 passing through the nozzle bores 4. The angle α between the Sekundärblasluftanblasung or between a Sekundärblasluftstrahl and a straight line 7 is therefore 90 ° or approximately 90 °. In the figure, it has been indicated that due to the blowing of high-velocity secondary air, an oscillation of the filaments 1 is effectively enhanced. In this way, additional draw points or points of Fadenunterziehung to the filaments.

Vorzugsweise und im Ausführungsbeispiel wird Sekundärblasluft mit einer Temperatur höher 50 °C angeblasen. Im Ausführungsbeispiel und nach sehr bevorzugter Ausführungsform beträgt die Temperatur der Sekundärblasluft 65 °C bis 85 °C, bevorzugt 70 °C bis 80 °C.Preferably, and in the embodiment, secondary blowing air having a temperature higher than 50 ° C is blown. In the embodiment and according to a very preferred embodiment, the temperature of the secondary blowing air is 65 ° C to 85 ° C, preferably 70 ° C to 80 ° C.

Unterhalb des Meltblown-Blaskopfes 2 und unterhalb der Sekundärblasluftanblasung befindet sich im Ausführungsbeispiel eine Ablegeeinrichtung 8, die vorzugsweise und im Ausführungsbeispiel als Siebband ausgebildet ist. Auf diese Ablegeeinrichtung 8 werden die Filamente zweckmäßigerweise als nicht dargestelltes Meltblown-Vlies abgelegt. Das Meltblown-Vlies eignet sich insbesondere für Filteranwendungen.Below the meltblown die 2 and below the Sekundärblasluftanblasung is in the embodiment, a depositing device 8, which is preferably formed and in the embodiment as a wire belt. In this depositing device 8, the filaments are expediently stored as not shown meltblown fleece. The meltblown fleece is particularly suitable for filter applications.

Claims (10)

  1. Device for producing filaments (1) from thermoplastic plastic, comprising a meltblown die head (2) which has a plastic-guiding core (3) with at least one row of nozzle bores (4) for the discharge of the plastic melt,
    and which furthermore has supply devices for primary blown air which are arranged on both sides of the plastic-guiding core (3) and by means of which the filaments (1) can be acted upon by the primary blown air on both sides in the region of the openings of the nozzle bores (4),
    and wherein at least one supply device for secondary blown air is provided, by means of which the filaments (1) can be acted upon laterally by secondary blown air at a temperature greater than 50°C below the meltblown die head (2).
  2. Device according to claim 1, wherein the primary blown air can be supplied on both sides through a gap (5) between the plastic-guiding core (3) and the nozzle lips (6), and wherein the gap width w of the gap and the distance x between the plastic-guiding core tip and an (imaginary) horizontal extension of the nozzle lip tip can be adjusted.
  3. Device according to one of claims 1 or 2, wherein the secondary blown air can be blown in at an angle α of 50° to 90°, preferably 65° to 90° and particularly preferably 75° to 90° with respect to an imaginary straight line (7) running through a nozzle bore (4).
  4. Device according to claim 3, wherein the secondary blown air can be blown in orthogonally or essentially orthogonally with respect to an imaginary straight line (7) running through a nozzle bore.
  5. Device according to one of claims 1 to 4, wherein secondary blown air can be blown in at a temperature of preferably greater than 60°C.
  6. Device according to one of claims 1 to 5, wherein the relative humidity of the secondary blown air is less than 70%, preferably less than 50% and particularly preferably less than 20%.
  7. Device according to one of claims 1 to 6, wherein supply devices for the secondary blown air are arranged with the proviso that the filaments (1) or the filament curtain can be acted upon by secondary blown air from both sides.
  8. Device according to one of claims 1 to 7, wherein the blowing with the secondary blown air takes place in a temporally constant manner from at least one side.
  9. Device according to one of claims 1 to 8, wherein the blowing with the secondary blown air takes place in a pulsed manner from at least one side.
  10. Device according to one of claims 1 to 9, wherein a depositing device (8) is provided, on which the filaments can be deposited as a spunbonded nonwoven.
EP04022248A 2004-09-17 2004-09-17 Device for producing filaments from thermoplastic material Expired - Lifetime EP1637632B1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
ES04022248T ES2287619T3 (en) 2004-09-17 2004-09-17 DEVICE FOR THE MANUFACTURE OF THERMOPLASTIC MATERIAL FILAMENTS.
DK04022248T DK1637632T3 (en) 2004-09-17 2004-09-17 Apparatus for making thermoplastic filaments
AT04022248T ATE368759T1 (en) 2004-09-17 2004-09-17 DEVICE FOR PRODUCING FILAMENTS FROM THERMOPLASTIC PLASTIC
DE502004004519T DE502004004519D1 (en) 2004-09-17 2004-09-17 Device for producing filaments of thermoplastic material
EP04022248A EP1637632B1 (en) 2004-09-17 2004-09-17 Device for producing filaments from thermoplastic material
MXPA05009748A MXPA05009748A (en) 2004-09-17 2005-09-13 Device for producing filaments from thermoplastic material.
KR1020050085835A KR100783450B1 (en) 2004-09-17 2005-09-14 Device for producing filaments from thermoplastic synthetic
CN2005101040755A CN1757800B (en) 2004-09-17 2005-09-15 Device for producing filaments from thermoplastic synthetic
US11/226,231 US20060061006A1 (en) 2004-09-17 2005-09-15 Device for producing filaments from thermoplastic synthetic
JP2005269633A JP2006083511A (en) 2004-09-17 2005-09-16 Mechanism for producing filament from thermoplastic synthetic material
BRPI0504077-9A BRPI0504077B1 (en) 2004-09-17 2005-09-16 Device for producing filaments of a synthetic thermoplastic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04022248A EP1637632B1 (en) 2004-09-17 2004-09-17 Device for producing filaments from thermoplastic material

Publications (2)

Publication Number Publication Date
EP1637632A1 EP1637632A1 (en) 2006-03-22
EP1637632B1 true EP1637632B1 (en) 2007-08-01

Family

ID=34926598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04022248A Expired - Lifetime EP1637632B1 (en) 2004-09-17 2004-09-17 Device for producing filaments from thermoplastic material

Country Status (11)

Country Link
US (1) US20060061006A1 (en)
EP (1) EP1637632B1 (en)
JP (1) JP2006083511A (en)
KR (1) KR100783450B1 (en)
CN (1) CN1757800B (en)
AT (1) ATE368759T1 (en)
BR (1) BRPI0504077B1 (en)
DE (1) DE502004004519D1 (en)
DK (1) DK1637632T3 (en)
ES (1) ES2287619T3 (en)
MX (1) MXPA05009748A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006014236A1 (en) 2006-03-28 2007-10-04 Irema-Filter Gmbh Fleece material used as a pleated air filter in a motor vehicle comprises thinner fibers homogeneously incorporated into thicker fibers
US9617658B2 (en) * 2010-08-12 2017-04-11 Boma Engineering Srl Apparatus for spinning fibres and producing a fibrous-containing nonwoven
DE102010052155A1 (en) 2010-11-22 2012-05-24 Irema-Filter Gmbh Air filter medium with two mechanisms of action
KR20130111591A (en) * 2010-12-06 2013-10-10 미쓰이 가가쿠 가부시키가이샤 Melt-blown nonwoven fabric, and production method and device for same
DE102012004227A1 (en) * 2012-03-06 2013-09-12 Carl Freudenberg Kg Producing polymer fibers, preferably e.g. nonwoven fabric, comprises extruding polymer melt using spinning nozzle arrangement to obtain polymer fibers in free jet, stretching fibers using primary gas stream, and cooling and tempering fibers
DE102012011065A1 (en) * 2012-06-04 2013-12-05 Irema-Filter Gmbh Process for producing a nonwoven fabric
DE102013008402A1 (en) 2013-05-16 2014-11-20 Irema-Filter Gmbh Nonwoven fabric and process for producing the same
WO2016013051A1 (en) * 2014-07-21 2016-01-28 ゼプト株式会社 Nanofibre-forming injection nozzle head, and nanofibre production device equipped with nanofibre-forming injection nozzle head
CN104532368B (en) * 2015-01-27 2018-01-09 嘉兴学院 A kind of loading and unloading type is adjustable long shuttle-type solution jet spinning nozzle and its application method
US20190106821A1 (en) * 2016-03-30 2019-04-11 Mitsui Chemicals, Inc. Apparatus for manufacturing non-woven fabric, method of manufacturing non-woven fabric, and non-woven fabric
CN118223137A (en) 2017-11-22 2024-06-21 挤压集团公司 Meltblowing die tip assembly and method
CN109837598A (en) * 2019-04-17 2019-06-04 中国科学院长春应用化学研究所 A kind of micro-fluidic device for spinning and method
CN111910262B (en) * 2020-08-04 2022-04-15 冯建国 Melt-blown non-woven fabric manufacturing equipment and method, melt-blown non-woven fabric and sanitary product
CN114075700B (en) * 2020-08-19 2022-11-29 中国科学院宁波材料技术与工程研究所 Chain type premodulation melt-blowing method, chain type premodulation melt-blowing nozzle and melt-blowing device
CN112030238B (en) * 2020-08-31 2021-06-08 山东恒鹏卫生用品有限公司 Melt-blown die head for melt-blown fabric production
WO2024098139A1 (en) * 2022-11-08 2024-05-16 Heat-Mx Worldwide Methods of reclaiming textile waste and recycling it without dyeing nor creating microplastic contamination in water system

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2618406B2 (en) * 1976-04-23 1979-07-26 Karl Fischer Apparate- & Rohrleitungsbau, 1000 Berlin Process for producing pre-oriented filament yarns from thermoplastic polymers
US4622259A (en) * 1985-08-08 1986-11-11 Surgikos, Inc. Nonwoven medical fabric
US4753843A (en) * 1986-05-01 1988-06-28 Kimberly-Clark Corporation Absorbent, protective nonwoven fabric
AU8275591A (en) * 1990-08-29 1992-03-05 Chicopee Spacer bar assembly for a melt blown die apparatus
US5075068A (en) * 1990-10-11 1991-12-24 Exxon Chemical Patents Inc. Method and apparatus for treating meltblown filaments
JP2989684B2 (en) * 1991-04-18 1999-12-13 株式会社クラレ Polymethylpentene ultrafine fiber web and method for producing the same
JP3581712B2 (en) * 1991-04-22 2004-10-27 ミネソタ マイニング アンド マニュファクチャリング カンパニー Stretched melt-blown fibers, methods for making such fibers, and webs made from such fibers
US5366793A (en) * 1992-04-07 1994-11-22 Kimberly Clark Co Anisotropic nonwoven fibrous web
US5273565A (en) * 1992-10-14 1993-12-28 Exxon Chemical Patents Inc. Meltblown fabric
US5405559A (en) * 1993-12-08 1995-04-11 The Board Of Regents Of The University Of Oklahoma Polymer processing using pulsating fluidic flow
CA2224906A1 (en) * 1995-08-02 1997-02-13 Kimberly-Clark Worldwide, Inc. Method and apparatus for the production of artificial fibers, non-woven webs and sorbency non-woven fabrics
US6001303A (en) * 1997-12-19 1999-12-14 Kimberly-Clark Worldwide, Inc. Process of making fibers
US6521555B1 (en) * 1999-06-16 2003-02-18 First Quality Nonwovens, Inc. Method of making media of controlled porosity and product thereof
JP2001081660A (en) * 1999-09-07 2001-03-27 Tonen Tapyrus Co Ltd High strength melt-blown nonwoven and its production
US6861025B2 (en) * 2002-06-20 2005-03-01 3M Innovative Properties Company Attenuating fluid manifold for meltblowing die

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2287619T3 (en) 2007-12-16
DE502004004519D1 (en) 2007-09-13
BRPI0504077A (en) 2006-05-02
BRPI0504077B1 (en) 2015-08-04
CN1757800B (en) 2010-05-05
EP1637632A1 (en) 2006-03-22
DK1637632T3 (en) 2007-10-29
KR100783450B1 (en) 2007-12-07
KR20060051299A (en) 2006-05-19
US20060061006A1 (en) 2006-03-23
CN1757800A (en) 2006-04-12
ATE368759T1 (en) 2007-08-15
JP2006083511A (en) 2006-03-30
MXPA05009748A (en) 2006-05-31

Similar Documents

Publication Publication Date Title
EP1637632B1 (en) Device for producing filaments from thermoplastic material
EP1323852B1 (en) Device for making a spunbond web
DE69115920T2 (en) Process for the treatment of meltblown filaments
EP1902164B1 (en) Spinning apparatus and process for producing fine threads by splicing for forming a nonwoven, and nonwoven obtainable thereby
EP1192301B1 (en) Method and device for the production of an essentially continuous fine thread
DE4332345C2 (en) Process and fleece blowing system for the production of a spunbonded web with high filament speed
DE3927254C2 (en)
EP1463851B1 (en) Spinning device and method having cooling by blowing
EP2181206B1 (en) Method for producing synthetic filaments from a polypropylene polymer blend
EP1463850B1 (en) Spinning method having turbulent cooling by blowing
DE1950669B2 (en) METHOD AND DEVICE FOR THE MANUFACTURING OF FLEECE
DE1560801A1 (en) Method and device for the production of fiber flat products by melt spinning
DE2053918A1 (en) Spunbonded fabric made from threads or strands of synthetic high polymers as well as method and device for its production
EP1710329B1 (en) Process and apparatus for meltspinning and cooling filaments
EP1630265B1 (en) Apparatus for the continuous production of a spunbonded web
DE102011087350A1 (en) Melt spinning device and melt spinning process
EP0598463A1 (en) Process and apparatus for conveying and for laying continuos filaments bundle with air force
DE10139228A1 (en) Stretching device and method for producing stretched plastic filaments
DE2532900A1 (en) METHOD FOR PRODUCING SPINNED FIBERS
DE4220915A1 (en) Cooling filaments in high speed melt spinning - with cooling air supplied by entrainment in perforated first section of cooling chimney
EP0455897A1 (en) Apparatus for the preparation of very fine fibres
DE1964060B2 (en) Process for the production of tangled nonwovens from high polymers
DE2025109A1 (en) Sohmeltspinning process
DE19716394C1 (en) Cooling control unit, for thermoplastic filament bundle from spinneret(s)
EP1057903A1 (en) Apparatus for the production of multicomponent yarns

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

17P Request for examination filed

Effective date: 20060419

17Q First examination report despatched

Effective date: 20060927

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 502004004519

Country of ref document: DE

Date of ref document: 20070913

Kind code of ref document: P

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

Effective date: 20070824

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2287619

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: NL

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

Effective date: 20070801

Ref country code: FI

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

Effective date: 20070801

Ref country code: BG

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

Effective date: 20071101

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

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

Effective date: 20070801

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

Ref country code: GR

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

Effective date: 20071102

Ref country code: MC

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

Effective date: 20070930

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

Ref country code: SK

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

Effective date: 20070801

Ref country code: IE

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

Effective date: 20070801

Ref country code: PT

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

Effective date: 20080102

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

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

Ref country code: RO

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

Effective date: 20070801

26N No opposition filed

Effective date: 20080506

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

Ref country code: EE

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

Effective date: 20070801

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: CH

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

Effective date: 20070930

Ref country code: LI

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

Effective date: 20070930

Ref country code: SI

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

Effective date: 20070801

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

Ref country code: CY

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

Effective date: 20070801

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

Ref country code: LU

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

Effective date: 20070917

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

Ref country code: HU

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

Effective date: 20080202

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

Ref country code: LI

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

Effective date: 20080930

Ref country code: CH

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

Effective date: 20080930

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

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

Ref country code: AT

Payment date: 20210923

Year of fee payment: 18

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

Ref country code: BE

Payment date: 20210924

Year of fee payment: 18

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 368759

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220917

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20220930

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

Ref country code: AT

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

Effective date: 20220917

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

Ref country code: BE

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

Effective date: 20220930

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

Ref country code: TR

Payment date: 20230914

Year of fee payment: 20

Ref country code: GB

Payment date: 20230920

Year of fee payment: 20

Ref country code: CZ

Payment date: 20230823

Year of fee payment: 20

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

Ref country code: SE

Payment date: 20230921

Year of fee payment: 20

Ref country code: FR

Payment date: 20230922

Year of fee payment: 20

Ref country code: DK

Payment date: 20230921

Year of fee payment: 20

Ref country code: DE

Payment date: 20230928

Year of fee payment: 20

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

Ref country code: ES

Payment date: 20231002

Year of fee payment: 20

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

Ref country code: IT

Payment date: 20230927

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 502004004519

Country of ref document: DE

REG Reference to a national code

Ref country code: DK

Ref legal event code: EUP

Expiry date: 20240917

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20240927

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20240916

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20240916