EP3225722A1 - Düse mit mehreren ausgängen - Google Patents

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Publication number
EP3225722A1
EP3225722A1 EP15862295.1A EP15862295A EP3225722A1 EP 3225722 A1 EP3225722 A1 EP 3225722A1 EP 15862295 A EP15862295 A EP 15862295A EP 3225722 A1 EP3225722 A1 EP 3225722A1
Authority
EP
European Patent Office
Prior art keywords
fluid
nozzle
chamber
outlet
fluid distributor
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.)
Granted
Application number
EP15862295.1A
Other languages
English (en)
French (fr)
Other versions
EP3225722A4 (de
EP3225722B1 (de
Inventor
José María LAGARÓN CABELLO
Wilson Rolando CHALCO SANDOVAL
María José FABRA ROVIRA
Amparo LÓPEZ RUBIO
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.)
Consejo Superior de Investigaciones Cientificas CSIC
Original Assignee
Consejo Superior de Investigaciones Cientificas CSIC
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 Consejo Superior de Investigaciones Cientificas CSIC filed Critical Consejo Superior de Investigaciones Cientificas CSIC
Priority to SI201530983T priority Critical patent/SI3225722T1/sl
Priority to RS20191435A priority patent/RS59581B1/sr
Priority to PL15862295T priority patent/PL3225722T3/pl
Publication of EP3225722A1 publication Critical patent/EP3225722A1/de
Publication of EP3225722A4 publication Critical patent/EP3225722A4/de
Application granted granted Critical
Publication of EP3225722B1 publication Critical patent/EP3225722B1/de
Priority to HRP20192027TT priority patent/HRP20192027T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/06—Distributing spinning solution or melt to spinning nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
    • B05B1/205—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor characterised by the longitudinal shape of the elongated body
    • B05B1/207—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor characterised by the longitudinal shape of the elongated body the elongated body being a closed loop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/0255—Discharge apparatus, e.g. electrostatic spray guns spraying and depositing by electrostatic forces only
    • 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
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • 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
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • D01D1/09—Control of pressure, temperature or feeding rate
    • 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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
    • D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin

Definitions

  • the present invention falls within the technical field of injection systems with multiple outlets for the production of microstructured, submicrostructured and nanostructured materials.
  • a multi-outlet nozzle that can be simple, coaxial or multiaxial and that enables working with low-viscosity fluids ensuring that said fluids leave through all the outlets of the nozzle.
  • Electrohydrodynamic or aerohydrodynamic processing is a method for obtaining fibers, particles and/or capsules by means of the action of an outer electrical field that is applied between two electrodes and to which a dissolved or melted polymer is subjected.
  • the two electrodes are an atomizing nozzle-tip through which the polymer is made to flow and a collecting electrode.
  • the structures obtained through electrohydrodynamic or aerohydrodynamic processing are particles, fibers and/or capsules of micrometric, submicrometric and nanometric size.
  • temperature is used to process those polymers that are used from a melted state, the process is called electrohydrodynamic processing of a melt, also known as melt electrospinning.
  • a stream of polymer solution or of a polymer melt to be atomized is expelled from the atomizing nozzle-tip (it can be a stream of one liquid or a melt or several).
  • the stream is subsequently elongated and consequently the fibers, particles and/or capsules are formed by means of the evaporation of solvents or by solidification of the melt.
  • the blow spinning/spraying technique consists in applying pressure differences in order to accelerate the liquid or liquids that flow through a nozzle-tip in order to obtain particles, fibers and/or capsules of micrometric, submicrometric and nanometric size.
  • Simple multiple-outlet nozzles are devices comprising two or more nozzle-tips arranged in an organized manner in order to improve the distribution of the flow of fluid, of the voltage and/or of applied gas.
  • Multiaxial nozzles with multiple outlets are devices comprising two or more special nozzle-tips through which two or more different liquids, melts or gases circulate at the same time in a concentric or parallel manner.
  • nozzles enable increasing production levels for electrohydrodynamic or aerohydrodynamic processing since the productivity of single nozzle-tip equipment is very low and the workflow rate is typically limited to between 1 and 5 ml/hour and to 100 ml/hour at most.
  • a device that is used to produce nanofibers with a high production rate and that comprises a spray nozzle-tip, a liquid storage chamber, a gas storage tube, a gas transportation tube and another tube for the transportation of the liquid.
  • the present invention proposes a multi-outlet nozzle that can be simple, coaxial or multiaxial and in which the injection is produced at the outlets.
  • the nozzle is intended for the production of microstructured, submicrostructured and nanostructured materials.
  • the nozzle enables producing fibers, particles and/or capsules on a micrometric, submicrometric and nanometric scale through electrohydrodynamic or aerohydrodynamic processing like electrospinning, electrospraying, melt electrospinning and blow spinning and spraying.
  • the nozzle can also be used in uniaxial, coaxial or multiaxial electrohydrodynamic or aerohydrodynamic processes, these fluids being able to flow in a coaxial or parallel manner.
  • the present invention solves the problem of the nozzles in the state of the art that cannot be used with low-viscosity fluids because defective products are generated.
  • An example of a low-viscosity fluid to act as a reference is water, which has a viscosity of 1 centipoise at 20°-C.
  • the key of the nozzle of the present invention is that it comprises a fluid distributor that allows decreasing the speed of the fluid and distributing it homogeneously in all the nozzle outlets.
  • said nozzle comprises the following elements: an outer needle and an inner needle, an outer chamber and an inner chamber, an inner fluid inlet duct and an outer fluid inlet duct.
  • the number of emitters is not limiting, there could be more than two.
  • the nozzle comprises at least one fluid distributor, which is the element that achieves an even distribution of the low-viscosity fluid towards all the outlets of the nozzle.
  • the distributor can be in any of the chambers of the nozzle whether it is uniaxial, coaxial or multiaxial (the uniaxial nozzle has a single chamber, the coaxial nozzle has two chambers and the multiaxial nozzle has two or more chambers).
  • the fluid distributor can be used for the internal fluid, for the external fluid(s) or for all the fluids at the same time depending on where it is arranged.
  • the fluid distributor is a hollow body with a configuration corresponding to the chamber of the nozzle in which it will be installed.
  • the distributor can be made of any material that is not soluble in the components of the solution that will be introduced into the nozzle.
  • the fluid distributor can be made of a porous material that can be metallic, plastic and/or ceramic, which also allows for a homogeneous flow to circulate through each of the nozzle-tips. If a porous material is used, it causes a drop in pressure in the flow of the liquid, obtaining a similar result to when a fluid distributor of nonporous material is used with the advantage that it can be used for both low-viscosity liquids and viscous liquids.
  • the porosity of the material can be designed depending on the viscosity of the fluid that is going to pass through the fluid distributor.
  • porous materials for the production of the fluid distributor enables making multi-outlet nozzles with fluid distributor in which each fluid flows through the fluid distributor in the corresponding chamber having a material with different porosity depending on the viscosity of the fluid that will cross through it. This will ensure a better distribution of the fluid depending on its viscosity.
  • a multi-outlet nozzle is proposed of the type comprising at least one chamber for the flowing of a fluid.
  • Said chamber in turn comprises an inlet opening connected to a fluid inlet duct and a plurality of outlet openings through which the fluid leaves the nozzle.
  • the key of the nozzle of the present invention is that it comprises a fluid distributor (3), arranged in the chamber, which is a hollow body intended for the flow of the fluid crossing said chamber and having a configuration corresponding to the geometry of the interior of the chamber (1, 2), and it is connected to a first opening that is an inlet opening for allowing the flow of the fluid therein and comprises a plurality of second openings (4) aligned with the outlet openings of the chamber (1, 2) for allowing the outlet of the flow crossing it, through the outlet openings in a uniform manner.
  • the nozzle comprises two or more chambers (1, 2) and comprises a fluid distributor (3) in at least one of the chambers.
  • the nozzle comprises at least one inner chamber (1) and at least one outer chamber (2) arranged after the inner chamber as seen for example in Figure 3 .
  • Each chamber (1, 2) of the nozzle comprises at least one inlet opening connected to a fluid inlet duct and a plurality of outlet openings through which the fluid leaves out the nozzle.
  • the nozzle comprises at least one fluid distributor (3), such as the one seen in Figure 1 , arranged in at least one of the chambers (1, 2) which is a hollow body intended for the flow of the fluid crossing said chamber (1, 2) in which it is found.
  • the fluid distributor (3) is removable and in another exemplary embodiment it is integrally shaped to fit the chamber of the nozzle.
  • the fluid distributor (3) has a configuration corresponding to the geometry of the interior of the chamber (1, 2) and it is connected to a first opening that is an inlet opening for allowing the flow of the fluid therein and it comprises a plurality of second openings (4) aligned with the outlet openings of the chamber (1, 2) in order to allow the outlet of the flow through the outlet openings in a uniform manner.
  • Figure 2 shows a fluid distributor (3) placed in the inner chamber of a nozzle.
  • the materials used for the production of the fluid distributor (3) are materials that are insoluble to the fluid crossing therethrough. Said materials could be porous or not. In the case where they are porous, said porosity depends on the viscosity of the fluid crossing therethrough in order to ensure the best distribution of the fluid towards all the outlet openings of the chamber.
  • Figure 5 shows how the porous material allows distributing the fluid in a uniform manner through several outlets.
  • the nozzle has a circular configuration and the outside diameter of the fluid distributor (3) coincides with the inner diameter of the chamber.
  • the diameter of the second openings (4) of the fluid distributor is between 0.0001 mm and 100 mm. In an even more preferred embodiment, the diameter of the second openings (4) of the distributor is between 0.01 mm and 2 mm.
  • the multi-outlet nozzle comprises 20 needles.
  • the fluid distributor To produce the fluid distributor, it is started with a hollow body that is molded in order to give it the same shape as the chamber of the nozzle.
  • the chamber of the nozzle is circular and the material of the hollow body can be Teflon (PTFE), for example, and the fluid distributor has a circular configuration with a 5.7 cm diameter, like the chamber of the nozzle in which the internal fluid is deposited and which, in this exemplary embodiment, is paraffin.
  • PTFE Teflon
  • the fluid distributor has 20 openings, each having a 1 mm diameter in this case, and the distance between holes is 8 mm. These outlet openings are oriented towards the next chamber (in this case towards the external fluid chamber) and, on the opposite side, facing towards the opposite side, there is an opening, which preferably is larger and, in this case, is 1.5 mm wide which is intended to allow the connection of the fluid distributor with a needle through which it is connected to the feeding system of the internal fluid.
  • the electrospinning was carried out with the high-performance nozzle having 40 stainless steel needles arranged concentrically in order to carry out coaxial electrohydrodynamic processing.
  • the conditions of the process in this example are: the flow rate of the inner solution 50 ml/h, the flow rate of the outer solution 60 ml/h, the distance between the nozzle and the collector 28 cm, the voltage of the nozzle 23 KV, the voltage of the collector 25 KV and the duration 3 hours.
  • the paraffin When a nozzle from the state of the art is used, the paraffin is not distributed uniformly over all the needles and leaves through a third of the outlets with different flow rates. This causes the encapsulation performance to be zero and that the block that is gathered in the collector has the appearance of a wet product (due to the lack of encapsulation of the paraffin).
  • the nozzle of the present invention comprising a fluid distributor, a block with a high encapsulation performance (95%) is obtained.
  • Figure 4 shows an image of the morphology of polyvinylpyrrolidone and RT5 fibers obtained by coaxial electrohydrodynamic or aerohydrodynamic processing using a multi-outlet nozzle as described herein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Nozzles (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • External Artificial Organs (AREA)
EP15862295.1A 2014-11-24 2015-11-24 Düse mit mehreren ausgängen Active EP3225722B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SI201530983T SI3225722T1 (sl) 2014-11-24 2015-11-24 Šoba z več odprtinami
RS20191435A RS59581B1 (sr) 2014-11-24 2015-11-24 Mlaznica sa više izlaza
PL15862295T PL3225722T3 (pl) 2014-11-24 2015-11-24 Dysza z wieloma wylotami
HRP20192027TT HRP20192027T1 (hr) 2014-11-24 2019-11-07 Mlaznica s više izlaza

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201431738 2014-11-24
PCT/ES2015/070845 WO2016083643A1 (es) 2014-11-24 2015-11-24 Inyector multisalida

Publications (3)

Publication Number Publication Date
EP3225722A1 true EP3225722A1 (de) 2017-10-04
EP3225722A4 EP3225722A4 (de) 2018-06-20
EP3225722B1 EP3225722B1 (de) 2019-08-07

Family

ID=56073662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15862295.1A Active EP3225722B1 (de) 2014-11-24 2015-11-24 Düse mit mehreren ausgängen

Country Status (12)

Country Link
EP (1) EP3225722B1 (de)
CY (1) CY1122430T1 (de)
DK (1) DK3225722T3 (de)
ES (1) ES2754651T3 (de)
HR (1) HRP20192027T1 (de)
HU (1) HUE046324T2 (de)
LT (1) LT3225722T (de)
PL (1) PL3225722T3 (de)
PT (1) PT3225722T (de)
RS (1) RS59581B1 (de)
SI (1) SI3225722T1 (de)
WO (1) WO2016083643A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020095331A1 (en) * 2018-11-11 2020-05-14 E-Spin Nanotech Pvt Ltd Capillary type multi-jet nozzle for fabricating high throughput nanofibers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10112677A1 (de) * 2000-03-17 2001-09-20 Barmag Barmer Maschf Vorrichtung zum Schmelzspinnen von Mehrkomponentenfäden
WO2006009854A2 (en) * 2004-06-18 2006-01-26 Yale University Increase of electrospray throughput using multiplexed microfabricated sources for the scalable generation of monodisperse droplets
US7160391B2 (en) * 2004-10-20 2007-01-09 The Procter & Gamble Company Electrostatic nozzle apparatus
US20120138701A1 (en) * 2010-12-02 2012-06-07 Olivier Marc X Electrospray Dispensing System
CN103403234B (zh) * 2011-02-24 2016-06-29 欧瑞康纺织有限及两合公司 用于熔融纺丝的设备
CN202809020U (zh) * 2012-05-30 2013-03-20 湖南博弈飞装备新材料研究所 连续静电纺丝系统
CN103451749A (zh) * 2012-05-30 2013-12-18 湖南博弈飞装备新材料研究所 连续静电纺丝系统及制备精细纤维的方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020095331A1 (en) * 2018-11-11 2020-05-14 E-Spin Nanotech Pvt Ltd Capillary type multi-jet nozzle for fabricating high throughput nanofibers

Also Published As

Publication number Publication date
ES2754651T3 (es) 2020-04-20
SI3225722T1 (sl) 2020-02-28
PT3225722T (pt) 2019-11-21
EP3225722A4 (de) 2018-06-20
LT3225722T (lt) 2019-12-10
WO2016083643A1 (es) 2016-06-02
DK3225722T3 (da) 2019-11-18
CY1122430T1 (el) 2021-01-27
HRP20192027T1 (hr) 2020-02-07
PL3225722T3 (pl) 2020-05-18
EP3225722B1 (de) 2019-08-07
RS59581B1 (sr) 2019-12-31
HUE046324T2 (hu) 2020-02-28

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