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WO2009049563A2 - Dispositif de production d'une couche de nanofibres par filage électrostatique de matrices de polymères - Google Patents

Dispositif de production d'une couche de nanofibres par filage électrostatique de matrices de polymères Download PDF

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Publication number
WO2009049563A2
WO2009049563A2 PCT/CZ2008/000122 CZ2008000122W WO2009049563A2 WO 2009049563 A2 WO2009049563 A2 WO 2009049563A2 CZ 2008000122 W CZ2008000122 W CZ 2008000122W WO 2009049563 A2 WO2009049563 A2 WO 2009049563A2
Authority
WO
WIPO (PCT)
Prior art keywords
spinning
electrode
collecting electrode
belt
substrate material
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.)
Ceased
Application number
PCT/CZ2008/000122
Other languages
English (en)
Other versions
WO2009049563A3 (fr
Inventor
Ladislav Mares
David Petras
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.)
Elmarco sro
Original Assignee
Elmarco sro
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 Elmarco sro filed Critical Elmarco sro
Publication of WO2009049563A2 publication Critical patent/WO2009049563A2/fr
Publication of WO2009049563A3 publication Critical patent/WO2009049563A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • D01D5/0007—Electro-spinning
    • D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
    • D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid

Definitions

  • the invention relates to the device for production of layer of nanofibres through electrostatic spinning of polymer matrices in electrostatic field of a high intensity induced by difference of potentials between the spinning electrode and the collecting electrode, which comprises endless belt mounted at least on two stretching shafts, out of which at least one is coupled with a drive, while between the spinning electrode and the collecting electrode is in vicinity of the collecting electrode performed the guidance of substrate material is.
  • the device for production of layer of nanofibres through electrostatic spinning of polymer matrices comprises the spinning electrode and the collecting electrode, which is usually formed of a rod or metal plate connected to opposite pole of high voltage source than the spinning electrode or is grounded.
  • EP 1059106 and US 4.143.196 disclose the device at which the collecting electrode comprises electrically conductive smooth belt, on which the produced layer of nanofibres is deposited, which is subsequently removed from the belt of the collecting electrode and is transported outside the device.
  • EP 1059106 and US 4.143.196 disclose the device at which the collecting electrode comprises electrically conductive smooth belt, on which the produced layer of nanofibres is deposited, which is subsequently removed from the belt of the collecting electrode and is transported outside the device.
  • the collecting electrode formed of a body of cylindric shape is in contact with substrate material, which through the spinning device is guided basically horizontally.
  • the disadvantage of this solution is an increased friction of substrate material against surface of the collecting electrode, when especially at fine substrate materials consisting of little mutually fixed fibres, which are for example fine webs, damage of substrate material occurs or may occur, especially in cases when the device comprises more spinning units, thus also more collecting electrodes and the substrate material must be strongly stretched so that its slacking is prevented.
  • the goal of the invention is to reduce or eliminate the disadvantages of the background art.
  • the goal of the invention has been reached by the device for production of layer of nanofibres through electrostatic spinning of polymer matrices according to the invention, whose principle consists in that the guidance of substrate material is formed of hold-down means of substrate material, which are performed on endless belt of the collecting electrode.
  • the hold-down means of substrate material performed on the endless belt serve to secure a good contact of substrate material with surface of the collecting electrode and an steady speed in motion of substrate material through the spinning space.
  • a good contact of substrate material with surface of the collecting electrode is a basic prerequisite for uniform depositing of nanofibres into a layer of nanofibres on the substrate material.
  • the hold-down means are formed of openings in the belt of the collecting electrode, and the space behind the belt in direction from the spinning electrode to the collecting electrode is coupled with a source of underpressure.
  • the endless belt of the collecting electrode is provided on its outer side with tips, that are able to extend into the substrate material and to exit from it again, thus exactly determine the speed of motion of substrate material, its position and also its stretching between the collecting electrodes of individual one after another arranged spinning units.
  • the tips form the hold-down means and on the belt are used either independently or in combination with openings and under pressure behind the belt of the collecting electrode.
  • the tips are made of electrically conductive material and their length corresponds to thickness of the substrate material.
  • the conductive tips on belt of the collecting electrode create irregularities of electrostatic field between the spinning electrode and the collecting electrode and so contribute to formation of Taylor cones from polymer solution on the spinning electrode, thus also to formation of nanofibres.
  • these tips are mounted in body made of electrically nonconducting material and at least in position against the spinning electrode the tips are connected to the high voltage source of opposite polarity than the spinning electrode or grounded. Electrostatic field in this case is induced between the tips and the spinning electrode. The produced nanofibres are carried from the spinning electrode towards the tips of the collecting electrode and they deposit on the substrate material.
  • the tips are made of electrically nonconducting material and they are mounted on belt made from electrically conductive material, which is connected to high voltage source of opposite polarity than the spinning electrode or grounded.
  • This embodiment is suitable for substrate materials formed of thin webs of electrically conductive material or of material, at which the electric conductivity was increased by some of the known methods. At such thin webs it is sufficient, when the electrostatic field is induced between the spinning electrode and surface of the belt of the collecting electrode, with which the web is in contact.
  • Fig. 1 shows the spinning device with the collecting electrode containing the rotatably mounted smooth belt with openings with assigned source of underpressure is assigned
  • Fig. 2 another variant of the device at which the endless belt of the collecting electrode is provided with tips.
  • Fig. 1 Examples of embodiment Exemplary embodiment of the device for production of layer of nanofibres through electrostatic spinning of polymer matrices in electrostatic field of high intensity according to the invention is represented in Fig. 1.
  • Polymer matrix is formed of any electrostatic spinnable form of polymer possibly with various additives or mixture of polymers, that may also be added with various additives, while usually the electrostatic spinnable form is solution or melt.
  • the spinning unit which comprises the spinning electrode 2 and against it arranged the collecting electrode 3. Between the spinning electrode 2 and the collecting electrode 3 electrostatic field of high intensity is induced in a known manner.
  • the passage for substrate material 4 is created, which is unwound in the known not represented unwinding device and into the spinning chamber 1 it is brought by feeding rollers 51., 52. From the spinning chamber ⁇ the substrate material 4 is taken away by the draw-off rollers 61., 62, behind which it is in a known not represented manner wound in the not represented winding device.
  • the spinning electrode 2 may be created in any known manner, while in the represented example of embodiment is represented the rotating spinning electrode formed of rotating cylindric body, whose surface section extends into reservoir of polymer matrix being subjected to spinning.
  • the collecting electrode 3 contains the endless belt 3J. made of electrically conductive material, which in the spinning chamber ⁇ _ is mounted on a pair of stretching shafts 32, 33. In the belt 3J. the openings 311 are performed.
  • the endless belt 3J. forms between the stretching shafts 32, 33 two sections, the guiding section, which is in contact with the substrate material, and the reversible section. Between the guiding section and reversible section of endless belt 31_ and stretching shafts 32, 33 the underpressure chamber 34 is arranged, whose inner space is coupled with a known not represented source of underpressure, while the underpressure chamber 34 is positioned behind the guiding section of the belt 3J. in direction from the spinning electrode 2 to the collecting electrode 3. Belt 3J.
  • the collecting electrode 3 in a known not represented manner is connected to the high voltage source of opposite polarity than the spinning electrode 3 or grounded.
  • At least one of the stretching shafts 32, 33 of the collecting electrode is coupled with a not represented drive, which ensures its forced rotation in direction corresponding to the direction of motion of substrate material 4, while the rotation speed is by some of the known methods regulated according to the speed of motion of the substrate material 4.
  • the substrate material 4 is guided on a guiding section of endless belt 31.. During the spinning process the substrate material 4 moves through the spinning chamber 1 between the spinning electrode 2 and the collecting electrode 3, while it is in contact with surface of the guiding section of the endless belt 3J[ of the collecting electrode.
  • the air or other gas from the space of spinning chamber 1_ is sucked in through the openings 311 in the endless belt 31. by the underpressure chamber 34, thus the substrate material 4 is kept in contact with surface of the guiding section of the endless belt 3J. and during the spinning process the nanofibres are deposited on it. Suction of the air or other gas from the space of the spinning chamber 1 contributes also to depositing of produced nanofibres to the substrate material 4.
  • the formed layer 41 of nanofibres is taken away together with the substrate material by means of a pair of the draw-off rollers 61., 62.
  • the endless belt 3J. of the collecting electrode is provided with the tips 312 on the outer side.
  • Embodiment of the tips 312 and the belt 3J. of the collecting electrode may be various according to the technological conditions of spinning, according to the kind of the polymer matrix subjected to spinning, according to the application of the produced layer of nanofibres, etc.
  • the tips 312 are designated especially for improvement of transport of the substrate material 4 formed especially of fine webs of a low linear cohesion at relatively high thickness.
  • the tips 312 extend into the substrate material 4 and they penetrate it at least partially and subsequently exit from the substrate material 4 again. By this the tips 312 exactly determine the speed of motion of substrate material 4, its position and stretching of substrate material 4 between the collecting electrodes 3 of individual one after another arranged spinning units.
  • the belt 3J. of the collecting electrode 3 is made of electrically conductive material as well as the tips 312. Length of the tips 312 corresponds to thickness of substrate material 4 or it is smaller. The peaks of the tips 312 during passage through the spinning space remain inside the substrate material 4 or they are to be found in area of its surface, on which the nanofibres are deposited. At low concentration of the tips 312 arranged in the belt 3J. the electrostatic field between the spinning electrode 2 and the collecting electrode 3 is induced between the active part of the spinning electrode 2 and against it positioned section of the belt 3J. of the collecting electrode 3, while in the place of the tips 312 electrostatic field is induced between the peak of the tip 312 and the active section of the spinning electrode 2.
  • the brought charge is concentrated into a point singular charge, which contributes to producing of nanofibres especially in initial phase of the spinning process.
  • the produced nanofibres are deposited on surface of substrate material 4.
  • electrostatic field is induced between the active section of the spinning electrode 2 and peaks of the tips 312 to be found in the given moment against this active section of the spinning electrode 2.
  • the peaks of tips 312 form the grid of singular charges.
  • the produced nanofibres are deposited on surface of the substrate material 4.
  • the belt 31_ of the collecting electrode 3 is made of electrically nonconducting material and in it there are mounted the tips
  • the tips 312 are identical as at the previous embodiment.
  • the tips 312 are connected to high voltage source of opposite polarity than the spinning electrode 2 or grounded. Electrostatic field is induced between the peaks of the tips 312 and the active section of the spinning electrode 2 and the produced nanofibres are deposited on surface of the substrate material 4.
  • the collecting electrode 3 formed of the endless belt 3J_ made of electrically nonconducting material with the tips 312 made of electrically conductive material are to the high voltage source connected only those tips, whose peaks are to be found against the spinning electrode 2.
  • the stretching shafts 3_1, 32 of the endless belt 3_1 may be mounted outside the spinning chamber ⁇ _. Also the reversible section of the endless belt 3J. may pass outside of the spinning chamber ⁇ .
  • the belt 3J. of the collecting electrode 3 is made of electrically conductive material and in it the tips 312 made of electrically nonconducting material are mounted.
  • electrostatic field is induced between the active section of the spinning electrode 2 and against it positioned section of the belt 3J. of the collecting electrode, while the tips 312 exert only function of transportation and maintaining of position of the substrate material 4 and they may be longer than the thickness of the substrate material 4.
  • All embodiments of the endless belt 3_1 of the collecting electrode 3 equipped with tips 312 may be provided with openings 3_H in the belt 31., while to the rear side of the belt 3J. the underpressure chamber 34 is assigned.
  • the openings 311 are performed between the tips 312 and serve to sticking of the substrate material_4 to the belt 31. of the collecting electrode 3. List of referential markings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

L'invention concerne un dispositif de production d'une couche de nanofibres par filage électrostatique de matrices de polymères dans un champ électrostatique d'une haute intensité induit par une différence de potentiels entre l'électrode de filage (2) et l'électrode collectrice (3), qui comporte la courroie sans fin (31) montée au moins sur deux arbres d'étirement (31, 32), dont au moins un est couplé à un système d'entraînement ; pendant qu'il se trouve entre l'électrode de filage (2) et l'électrode collectrice (3) à proximité de l'électrode collectrice (3), le guidage du matériau de substrat (4) est exécuté. Le guidage du matériau de substrat (4) est formé des moyens de maintien du matériau de substrat (4), qui sont placés sur la courroie sans fin (31) de l'électrode collectrice (3), et ils peuvent être formés d'ouvertures (311) dans la courroie sans fin (31) couplée à la source de sous-pression ou aux extrémités (312) placées sur la partie extérieure de la courroie (31).
PCT/CZ2008/000122 2007-10-18 2008-10-15 Dispositif de production d'une couche de nanofibres par filage électrostatique de matrices de polymères Ceased WO2009049563A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZPV2007-728 2007-10-18
CZ20070728A CZ2007728A3 (cs) 2007-10-18 2007-10-18 Zarízení pro výrobu vrstvy nanovláken elektrostatickým zvláknováním polymerních matric

Publications (2)

Publication Number Publication Date
WO2009049563A2 true WO2009049563A2 (fr) 2009-04-23
WO2009049563A3 WO2009049563A3 (fr) 2009-10-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2008/000122 Ceased WO2009049563A2 (fr) 2007-10-18 2008-10-15 Dispositif de production d'une couche de nanofibres par filage électrostatique de matrices de polymères

Country Status (3)

Country Link
CZ (1) CZ2007728A3 (fr)
TW (1) TW200938666A (fr)
WO (1) WO2009049563A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009049564A3 (fr) * 2007-10-18 2010-02-25 Nanopeutics S.R.O. Électrode collectrice d'un dispositif de fabrication de nanofibres par filage électrostatique de matrices polymères, et dispositif comprenant cette électrode collectrice
EP2458042A1 (fr) 2010-11-24 2012-05-30 SpinPlant GmbH Matériau de feuille, procédé de production associé et dispositif permettant d'effectuer le procédé
US9065122B2 (en) 2010-09-30 2015-06-23 Applied Materials, Inc. Electrospinning for integrated separator for lithium-ion batteries
WO2016038528A1 (fr) * 2014-09-08 2016-03-17 Fanavaran Nano- Meghyas Company (Ltd.) Appareil d'électrofilage sans aiguille
CN114657649A (zh) * 2020-12-24 2022-06-24 长胜纺织科技发展(上海)有限公司 一种静电纺丝装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ2016622A3 (cs) * 2016-10-06 2017-09-13 Nafigate Corporation, A.S. Způsob ukládání vrstvy polymerních nanovláken připravených elektrostatickým zvlákňováním roztoku nebo taveniny polymeru na elektricky nevodivé materiály, a tímto způsobem připravený vícevrstvý kompozit obsahující alespoň jednu vrstvu polymerních nanovláken

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
IL132945A0 (en) * 1999-06-07 2001-03-19 Nicast Ltd Filtering material and device and method of its manufacture
DE10105843A1 (de) * 2001-01-16 2002-07-18 Fleissner Gerold Verfahren und Vorrichtung zum Transport eines Vlieses zwischen zwei mit Abstand voneinander angeordneten Walzen
CZ294274B6 (cs) * 2003-09-08 2004-11-10 Technická univerzita v Liberci Způsob výroby nanovláken z polymerního roztoku elektrostatickým zvlákňováním a zařízení k provádění způsobu
JP4276962B2 (ja) * 2004-01-28 2009-06-10 日本バイリーン株式会社 積層繊維集合体の製造方法
US20090189319A1 (en) * 2004-02-02 2009-07-30 Kim Hak-Yong Process of preparing continuous filament composed of nanofibers
US20060012084A1 (en) * 2004-07-13 2006-01-19 Armantrout Jack E Electroblowing web formation process
US7887311B2 (en) * 2004-09-09 2011-02-15 The Research Foundation Of State University Of New York Apparatus and method for electro-blowing or blowing-assisted electro-spinning technology
US8522520B2 (en) * 2006-11-20 2013-09-03 Stellenbosch University Yarn and a process for manufacture thereof
CZ2007108A3 (cs) * 2007-02-12 2008-08-20 Elmarco, S. R. O. Zpusob a zarízení pro výrobu vrstvy nanocástic nebo vrstvy nanovláken z roztoku nebo tavenin polymeru

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009049564A3 (fr) * 2007-10-18 2010-02-25 Nanopeutics S.R.O. Électrode collectrice d'un dispositif de fabrication de nanofibres par filage électrostatique de matrices polymères, et dispositif comprenant cette électrode collectrice
US9065122B2 (en) 2010-09-30 2015-06-23 Applied Materials, Inc. Electrospinning for integrated separator for lithium-ion batteries
US9871240B2 (en) 2010-09-30 2018-01-16 Applied Materials, Inc. Electrospinning for integrated separator for lithium-ion batteries
EP2458042A1 (fr) 2010-11-24 2012-05-30 SpinPlant GmbH Matériau de feuille, procédé de production associé et dispositif permettant d'effectuer le procédé
WO2012069558A1 (fr) 2010-11-24 2012-05-31 Spinplant Gmbh Matériau en feuille, procédé de fabrication associé et dispositif pour réaliser le procédé
US9522507B2 (en) 2010-11-24 2016-12-20 Spinplant Gmbh Method and device for producing sheet material
WO2016038528A1 (fr) * 2014-09-08 2016-03-17 Fanavaran Nano- Meghyas Company (Ltd.) Appareil d'électrofilage sans aiguille
CN114657649A (zh) * 2020-12-24 2022-06-24 长胜纺织科技发展(上海)有限公司 一种静电纺丝装置

Also Published As

Publication number Publication date
TW200938666A (en) 2009-09-16
WO2009049563A3 (fr) 2009-10-29
CZ2007728A3 (cs) 2009-04-29

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