EP3276051B1 - Nanofiber production device and nanofiber production method - Google Patents

Nanofiber production device and nanofiber production method Download PDF

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Publication number
EP3276051B1
EP3276051B1 EP16768902.5A EP16768902A EP3276051B1 EP 3276051 B1 EP3276051 B1 EP 3276051B1 EP 16768902 A EP16768902 A EP 16768902A EP 3276051 B1 EP3276051 B1 EP 3276051B1
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EP
European Patent Office
Prior art keywords
raw material
unit
pressure gas
nanofiber
liquid raw
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EP16768902.5A
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German (de)
English (en)
French (fr)
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EP3276051A1 (en
EP3276051A4 (en
Inventor
Morihiko Ikegaya
Hiroyoshi Sota
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M Techx Inc
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M Techx Inc
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Publication of EP3276051A4 publication Critical patent/EP3276051A4/en
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    • 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
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • 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
    • D01D13/00—Complete machines for producing artificial threads
    • 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
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • D04H1/565—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres by melt-blowing

Definitions

  • the present invention relates to an apparatus and a method for producing a nanofiber, which are capable of providing a high-quality nanofiber in a simple structure.
  • a nanofiber producing method there are conventional methods such as an electrospinning method, a melt blown method or the like, and there are advantages and disadvantages with each method.
  • Patent Document 1 as the above-mentioned background of the invention discloses a method for producing a nonwoven fabric consisting of a plurality of kinds of fiber which is made by mixing a solution discharging fiber to a melt blown fiber. Specifically, by using a solution spinning unit which ejects a spinning solution discharged from a liquid discharge portion with a gas ejected from a gas discharge portion, the solution discharge fiber made by discharging and fiberizing the spinning solution is mixed into a fiber flow of a melt blown fiber delivered from a nozzle by the melt blown method.
  • Non-Patent Document 1 discloses a nanofiber producing method using an electrospinning method.
  • a conventional electrospinning method for producing the nanofiber requires solvent for swelling resin, however, Non-Patent Document 1 discloses a configuration for preventing flashing and explosion caused by using a solvent by swelling by a heat without using the solvent. Additionally, disadvantages of the nanofiber producing method using the meld blown method are described in detail.
  • Patent Documents 2 to 5 disclose several fiber producing apparatuses. Among Patent Documents 2 to 5, Patent Document 3 discloses an apparatus as specified in the preamble of claim 1, which is capable of producing microfibers in the range of 1 to 20 microns or down to 0.1 micron.
  • Non-Patent Document 1 WEB-Journal No. 151 Nonwoven Fabric Extra Issue (http://www.webj.co.jp/index.html )
  • Non-Patent Document 1 when a fiber diameter is reduced in the nanofiber producing method of the conventional melt blown method, it is considered to apply a method for ejecting high-temperature air at high speed and a method for suppressing discharge of polymer.
  • the high-temperature air is ejected at high speed, the fiber diameter is reduced but length of the fiber is shortened and shredded.
  • discharge of polymer is suppressed, an amount of production per unit time is extremely reduced. Accordingly, it is difficult for either method to achieve mass production of the nanofiber having a good quality.
  • productivity has been improved, however, an apparatus has become complicated, countermeasures is required for preventing flashing and explosion, and cost of manufacture has become expensive.
  • the present invention was made in consideration of the above problems, and an object of the present invention is to provide an apparatus and a method for producing a nanofiber which is capable of supplying a large amount of the nanofiber having good quality in nanofiber producing method of a melt blown method, and improving safety by eliminating factor of flashing and explosion.
  • an apparatus for producing a nanofiber comprising the features set forth in claim 1.
  • a nanofiber having a smaller diameter and good quality can be safely produced. Furthermore, when the nanofiber is produced, it is not necessary to apply an apparatus using high voltage, and a problem of an amount of production per unit time which is disadvantage for the melt blown method can be solved by providing a plurality of resin discharge unit.
  • a nanofiber is formed by supplying a liquid raw material to fluid (preferably, gaseous fluid) ejected in high pressure.
  • a term “GAS” without specifying composition means gases consisting of any composition and molecular structure.
  • a term “raw material” means all of materials applicable for forming the nanofiber.
  • the term “liquid raw material” in the description does not limit property of the material to liquid, and includes "molten raw material” applicable for the embodiment 1 forming the nanofiber by melting and extruding a solid raw material from an extruding unit.
  • liquid raw material in the description also includes “dissolved raw material” applicable for the embodiment 2 which forms the nanofiber by dissolving in advance a solid or a liquid raw material in a predetermined solvent so that a predetermined concentration can be obtained, and by feeding by using an appropriate means and discharging or extruding from a discharge holes.
  • the "liquid raw material” of the present invention needs property having viscosity enough to supply (eject, discharge) "raw material” from supplying holes (ejection holes, discharge holes), and “raw material” having such liquid property is described as “liquid raw material” in the present invention.
  • the discharge unit 73a for discharging the liquid raw material is provided at the supply angle ⁇ to a central line 91 of the high-pressure gas flow 90, and the liquid raw material is discharged/supplied from a plurality of the discharge units 73a toward the central line 91 of the high-pressure gas flow 90.
  • the liquid raw material discharged/supplied from the plurality of discharge units 73a is preferably provided to be intersected on the central line 91.
  • Fig. 11 arrangement condition of each component is as mentioned above, and positional relationship is as follows.
  • distance a represents a distance from the gas ejection hole to the discharge unit 73a
  • distance b represents a distance from the gas ejection hole to a point that the raw materials discharged from the discharge unit 73a are intersected
  • distance c represents an opening diameter of the gas ejection hole
  • distance d represents a distance between the gas ejection holes.
  • the discharge unit 73a for discharging the liquid raw material is provided at the supply angle ⁇ to the central line 91 of the high-pressure gas flow 90.
  • the raw material supply tangent angle ⁇ is adjustable within a scope of 0° ⁇ 90°.
  • ⁇ is preferably equal to 20° plus/minus 10°.
  • the raw material supply tangent angle ⁇ should be determined by the "distance a", the “distance b", and the “distance d" between the gas ejection holes, and moreover, should be determined by relationship among the opening diameter "distance c" of the high-pressure gas ejection hole, pressure and temperature of the ejected high-pressure gas.
  • a pellet-shaped raw material (resin) fed into a hopper is supplied and melted in a heating cylinder heated by a heater, and sent to a front part of the heating cylinder by a screw rotated by a motor.
  • the heating cylinder is provided with a head portion, and the high-pressure gas is ejected from the gas ejection hole provided at a center of the head portion.
  • the liquid molten raw material (molten resin) sent to an end of the heating cylinder is supplied (discharged) from the supply unit (the discharge unit) of the liquid molten raw material (molten resin) having a plurality of superfine tubes provided in a downstream side of the gas ejection unit, through inside of the head portion.
  • a plurality of superfine tubes of the discharge units of the liquid molten raw material are provided equally around the gas ejection hole provided at a center. Thereby, the molten resin discharged from the discharge units of the liquid molten raw material is elongated and the fiber having the nanometer-order fiber can be obtained.
  • configuration is made to eject the high-pressure gas from the gas ejection hole provided at a center thereof, and the liquid dissolved raw material is discharged from a plurality of superfine tubes of the discharge units of the liquid dissolved raw material provided in a downstream side of the discharge units of the liquid dissolved raw material.
  • a nanofiber producing apparatus 1 as shown in Fig. 1 comprises a hopper 2, a heating cylinder 3, a heater 4 as a heating unit, a screw 5 as an extruding unit, a motor 6 as a driving unit, and a cylindrical head portion 7.
  • the hopper 2 feeds a resin (a granular synthetic resin having a fine particle) to be a material for the nanofiber into the nanofiber producing apparatus 1.
  • the heating cylinder 3 heats and melts the resin supplied from the hopper 2.
  • the heater heats the heating cylinder from outside.
  • the screw 5 is rotatably stored in the heating cylinder 3 and functions to move the molten resin to the end of the heating cylinder 3 by rotating.
  • a nanofiber producing apparatus 1 further comprises a gas ejection hole 71 (an opening nozzle) for ejecting a gaseous hot air from the center area, and a resin discharge unit inside thereof for discharging the molten resin described below from the periphery of the gas ejection hole 71 (an opening nozzle) .
  • the high-pressure gas is supplied to the head portion 7 through a pipe 81 connected to a gas piping unit 8 as a gas supplying pipe for ejecting the gas from the center area.
  • the gas piping unit 8 is provided with a heating unit such as a heater or the like (not shown), and configuration is made to eject a hot air from the gas ejection unit 71 (the opening nozzle).
  • the head portion 7 and the heating cylinder 3 are connected via a seal portion 9 of a sheet member having a shape of O-ring and a doughnut-shape, and the molten resin is not leaked to outside of the apparatus thereby.
  • a plurality of heaters 4 provided at an outer circumference of the heating cylinder 3 is capable of controlling temperature separately or collectively by a control unit (not shown).
  • a control unit not shown
  • four heaters 4 are provided as shown in Fig. 1 , but not limited thereto, modification is applicable to the number of installation, size of each heater, and condition of arrangement in conformity to material and property of the resin to be used, and conditions of a diameter and length of the heating cylinder 3.
  • Fig. 2 is a plan view and Fig. 3 is a front view of a nanofiber producing apparatus 1 according to the present embodiment.
  • Figs. 4 to 6 are explanatory diagrams showing structure of the head portion 7.
  • the head portion 7 of the present embodiment is connected to the pipe 81 into which the high-pressure gas is fed from the outer circumference of the heating cylinder 3 through the gas piping unit 8.
  • the high-pressure gas from the pipe 81 is introduced to inside of the head portion 7 and ejected from the gas ejection hole (the opening nozzle: Fig. 3 ) provided at the center area.
  • a plurality of resin discharge units 73 are provided at equal intervals around the gas ejection hole 71.
  • the resin discharge unit 73 comprises a resin discharge needle 73a and a resin discharge needle fitting unit 73b having a structure for fitting the resin discharge needle 73a to the head portion 7.
  • the head portion 7 shown in Fig. 3 comprises a heating cylinder cover unit 77 for covering the end portion of the heating cylinder 3 and a resin discharge unit holding ring 78 as a means for holding the resin discharge unit 73.
  • the resin discharge unit holding ring 78 is fixed to the heating cylinder cover unit 77 without fixing means such as a bolt (without reference number).
  • this resin discharge unit holding ring 78 if a plurality of the resin discharge units 73 are provided around the gas ejection hole 71 (the opening nozzle), there is achieved greatly increasing productivity of the nanofiber having a uniform diameter and fiber length by arranging a plurality of resin discharge unit 73 at an equal interval, an equal distance ("distance a" from the gas ejection hole), or an equal angle (discharge angle ⁇ ).
  • the gas flow 90 is ejected from the gas ejection hole 71 provided at a center area of the head portion 7.
  • the resin discharge holes of the resin discharge needles 73a are provided forward (in downstream side along with the gas flow 90 from the ejection holes 71) with "distance a" from the ejection hole 71.
  • Each resin discharge hole of a plurality of resin discharge needles 73a is provided for discharging the resin forward with "distance b" from the ejection holes 71 (in the downstream side along with the gas flow 90 from the ejection holes 71) so as to intersect resins.
  • an arrangement condition of a plurality of resin discharge units 73 it is also capable of forming a nanofiber having an ununiformed diameter or fiber length by changing the number of the resin discharge units 73, an arrangement interval, an arrangement distance ("distance a" from the gas ejection hole), and an arrangement angle ⁇ .
  • the arrangement condition of the resin discharge unit 73 such as the arrangement interval or the like may be appropriately selected and changed.
  • Fig. 4 is a cross-sectional view of the head portion 7 of Fig. 3 , taken along the line A-A.
  • Fig. 5 (a), (b) and (c) are cross-sectional views of main part of the head portion 7 of Fig. 4 , taken along the lines B-B, C-C and D-D, respectively.
  • Fig. 6 is an explanatory diagram showing a flow passage A of the high-pressure gas and a flow passage B of the molten resin.
  • six resin flow passages 75 are provided at equal intervals corresponding to the resin discharge unit 73 in the head portion 7.
  • the resin discharge unit 73 is connected to the heating cylinder 3 through the resin flow passage 75.
  • the molten resin pressed by rotation of the screw 5 flows into the resin flow passage 75 shown in the cross-sectional view, taken along the lines D-D of Fig. 5 (c) , and through the resin flow passage 75 shown in the cross-sectional view taken along the lines C-C, the molten resin flows in the resin discharge needle fitting unit 73b shown in the cross-sectional view, taken along the lines B-B and is discharged from the resin discharge needle 73a.
  • the gas flow passage 72 (an arrow A in the drawings) is provided at a center of the head portion 7 so as not to interfere the resin flow passage 75 (an arrow B in the drawings).
  • the gas flow passage 72 is provided by changing a direction from outside to inside of the head portion 7 through the any adjacent resin flow passage 75.
  • the gas piping unit 8 is connected to the gas flow passage 72 through the pipe 81.
  • the resin flow passage 75 and the gas flow passage 72 are provided in the head portion 7 so as not to interfere each other.
  • the numeral reference 79 in Fig. 5(b) represents a screw portion 79 for fitting the pipe (the gas flow passage) 81 on the heating cylinder cover unit 77.
  • a holding adjusting unit 74 for the resin discharge unit 73 is provided.
  • a diameter of the resin discharge hole of the resin discharge needle 73a in the resin discharge unit 73 is very small and the resin discharge needle 73a is susceptible to the effects of stress such as vibrations of an apparatus and pressure of the resin, and therefore, the arrangement condition of the previously mentioned resin discharge unit 73 may be changed and detachment may be occurred from the head portion 7. It becomes necessary to avoid stress on the resin discharge needle 73a if an angle of the resin discharge needle 73a is adjusted and changed, and to make a structure not to detach the resin discharge needle 73a from the head portion 7.
  • Fig. 7(a) is an explanatory diagram showing a support structure of the holding adjusting unit 74 for fixing the resin discharge unit 73 to the resin discharge unit holding ring 78, and for making a fitting angle adjustable.
  • the resin discharge unit 73 comprises the resin discharge needle 73a and the resin discharge needle fitting unit 73b, and the resin discharge needle fitting unit 73b is fixed on the resin discharge unit holding ring 78 of the head portion 7 by screwing (not shown), engaging and using a fixing means such as a pin or the like.
  • the resin discharge needle 73a is provided with the holding adjusting unit 74.
  • This holding adjusting unit 74 comprises a resin discharge needle gripping unit 74a for gripping the resin discharge needle 73a from the periphery and a adjusting unit 74b having an adjusting pestle 74c which is retractable and provided penetrating from outside to inside of the head portion 7.
  • the adjusting unit 74b By operating the adjusting unit 74b, the adjusting pestle 74c is advanced and retracted, and the resin discharge needle gripping unit 74a is moved in a diameter direction of the head portion 7. Thereby, the resin discharge needle 73a can be fixed at a desired position and angle.
  • the resin discharge unit 73 is adjusted so that the discharging molten resin is discharged at a desired discharge angle to the ejection gas flow from the gas ejection hole 71, and is surely fixable at the angle.
  • This structure is useful as the adjusting unit of the discharge angle of the molten resin against the ejection has flow, and the resin discharge needle 73a has a shape of very thin pipe.
  • the nanofiber producing apparatus 1 is operated, big vibration of the pipe may be occurred on the top thereof by driving the motor 6 and the screw 5, and the holding adjusting unit 74 can suppress the vibration effectively.
  • the six resin discharge units 73 are provided, and the six holding adjusting unit 74 are also provided, but not limited thereto, the number of thereof may be appropriately selected in accordance with condition of the resin for use, an amount of production, property of products.
  • Fig. 7(b) shows another example of an angle adjusting function of the resin discharge unit 73.
  • the holding adjusting unit 74 comprises a resin discharge needle gripping unit 74d for gripping the resin discharge needle 73a from the periphery, and an adjusting unit (not shown) having an adjusting pestle 74e which is retractable and provided penetrating from outside to inside of the head portion 7.
  • the adjusting pestle 74e is advanced and retracted, and the resin discharge needle gripping unit 74d is moved in a diameter direction of the head portion 7.
  • the resin discharge needle 73a can be fixed at a desired position and angle.
  • the resin discharge needle fitting unit 73c is made spherical and cylindrical, a sliding surface 76 on which the resin discharge needle fitting unit 73c can rotate or be rotatable is provided on the resin discharge unit holding ring 78 of the head portion 7, and the resin discharge needle fitting unit 73c is provided.
  • a sliding surface 76 on which the resin discharge needle fitting unit 73c can rotate or be rotatable is provided on the resin discharge unit holding ring 78 of the head portion 7, and the resin discharge needle fitting unit 73c is provided.
  • the gas ejection hole 71 is provided in a downstream side from the resin discharge unit 73. According to this structure, the molten resin is gradually elongated along with a distribution of ejected gas flow ejected from the gas ejection hole 71, and a fiber having nanometer-order is obtained.
  • gas is ejected from the gas piping unit 8 as a hot air. Accordingly, the resin discharged from the resin discharge unit 73 has a nanofiber larger in length and smaller in fiber diameter in comparison with the case the normal temperature gas is ejected.
  • the raw material (the resin) fed into the hopper 2 is melted in the heating cylinder 3 by heating by the heater 4, and sent to a front part of the heating cylinder 3 by a screw rotated by the motor 6.
  • the molten resin arrived at the end of the heating cylinder 3 is discharged from the raw material discharge holes of six resin discharge needles 73 through six resin flow passages 75 provided in the inside of the head portion 7.
  • the discharged molten resin is carried along with an air current generated by the high-pressure and high-temperature gas supplied from the gas piping unit 8 and ejected from the gas ejection hole 71.
  • the nanofiber is formed by elongating the molten resin by the difference in velocity between rapid air current of the high-temperature gas and slow air retained therearound.
  • the nanofiber producing apparatus in which the granular synthetic resin having a fine particle is melted and used as a raw material.
  • the liquid raw material of the nanofiber is not limited thereto, and a dissolved raw material may be used, which is prepared by dissolving the solid or liquid raw material in the predetermined solvent in advance so as to obtain the predetermined concentration. This is also called as the liquid raw material.
  • Figs. 8 to 10 show the nanofiber producing apparatus for forming the nanofiber from the dissolved raw material. Same reference numerals are used to the structure same as that in the embodiment 1.
  • a solvent storage unit 5A is used having function for extruding the dissolved raw material with the predetermined pressure instead of using the hopper 2, the screw 5 and the motor 6 of the embodiment 1.
  • the gravity caused by difference in height may be applied as the predetermined pressure.
  • the head portion 7A is connected to a solvent supplying hose 3A and the gas piping unit 8.
  • the unit for ejecting gas (illustration omitted) may be provided in the gas piping unit 8 or be introduced from the high-pressure gas supply unit (not shown) to the gas piping unit 8. As shown in Fig.
  • the head portion 7A is provided with a gas flow passage 72A and a gas ejection hole 71A as a flow passage of the gas supplied from the gas piping unit 8.
  • the head portion 7A is provided with a resin flow passage 75A as the flow passage of the dissolved raw material, and the resin flow passage 75A is connected to the resin discharge unit 73.
  • the resin discharge unit 73 comprises the resin discharge needles 73a as a discharge hole of the dissolved raw material and the resin discharge needle fitting unit not shown in Figs. 8 to 10 .
  • the head portion 7A is provided with the resin discharge unit holding ring 78A.
  • the holding adjusting unit 74 comprising he resin discharge needle gripping unit 74a and the adjusting unit 74b having the adjusting pestle 74c which is retractable and provided penetrating from outside to inside of the head portion 7A
  • the discharge angle of the resin discharge needle 73a can be adjustable at all by the holding adjusting unit 74 as same in the embodiment 1.
  • the nanofiber producing apparatus according to the embodiment 2 is, as shown in Fig. 10 , provided with two resin discharge units 73.
  • the number of resin discharge unit 73 is not limited to two, and three or more resin discharge units 73 can be equally provided around the gas ejection holes 71A. In this case, the resin discharge unit 73 is preferably equally provided.
  • the embodiment in the drawings shows a horizontal ejection type, however, those skilled in the art can easily consider variations for ejecting vertically (from upward to downward, or from downward to upward) in a vertical direction from the gas ejection hole 71A to the gas flow passage 72A.
  • the dissolved raw material is used which the raw material is dissolved in the solvent, and the nanofiber producing apparatus can be composed without using a complicated component, such as the heating cylinder, the motor, the screw and so on.
  • the apparatus becomes small in size and space can be saved.
  • a portable nanofiber producing apparatus can be obtained.
  • the nanofiber can be formed by spraying the nanofiber to an area where the nanofiber should be attached, and use of a fiber can be expanded.
  • the present invention is not limited to the prescribed embodiments, and various modifications may be possible within a scope of the present invention.
  • the horizontal nanofiber producing apparatus is described which the molten resin and the gas ejection hole are provided in a horizontal direction, however it is not limited thereto, there is no problem to arrange the vertical apparatus and method for producing the nanofiber in the downward. If we adopt the vertical apparatus and method, an effect of gravity can be effectively prevented.
  • the extruding unit is explained as the screw 5, however as a die cast method, there is no problem if the solvent is supplied in order and intermittent extrusion is made by using a piston, although countermeasures should be taken against interruption of produced nanofiber.
  • the gas ejection hole 71 may be nozzle shape by forming in a taper shape so as to increase the pressure thereof.
  • Two examples are raised and described about the structure of adjusting the angles of the resin discharge needle 73a, however, there can be applied the structure capable of adjusting the angles of the bellows-type resin discharge unit and so on.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
EP16768902.5A 2015-03-26 2016-03-24 Nanofiber production device and nanofiber production method Active EP3276051B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015065171A JP6047786B2 (ja) 2015-03-26 2015-03-26 ナノファイバー製造装置及びナノファイバー製造方法
PCT/JP2016/059462 WO2016152999A1 (ja) 2015-03-26 2016-03-24 ナノファイバー製造装置及びナノファイバー製造方法

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EP3276051A1 EP3276051A1 (en) 2018-01-31
EP3276051A4 EP3276051A4 (en) 2018-11-14
EP3276051B1 true EP3276051B1 (en) 2020-11-18

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US (3) US20180094363A1 (ja)
EP (1) EP3276051B1 (ja)
JP (1) JP6047786B2 (ja)
CN (2) CN107614764B (ja)
AU (3) AU2016237135A1 (ja)
CA (1) CA3000318A1 (ja)
ES (1) ES2850075T3 (ja)
HU (1) HUE052847T2 (ja)
MY (1) MY187225A (ja)
RU (1) RU2727941C2 (ja)
SA (1) SA517390020B1 (ja)
SG (1) SG11201707906QA (ja)
TW (2) TWI711729B (ja)
WO (1) WO2016152999A1 (ja)
ZA (1) ZA201805436B (ja)

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JP6362147B2 (ja) * 2016-05-09 2018-07-25 エム・テックス株式会社 ナノファイバー製造装置及びナノファイバー製造方法
JP6171072B1 (ja) * 2016-11-14 2017-07-26 関西電子株式会社 樹脂ファイバの製造方法、これに用いられるノズルヘッド及び製造装置
JP6964861B2 (ja) * 2017-05-22 2021-11-10 エム・テックス株式会社 ナノファイバー製造装置およびそれに用いられるヘッド
CZ307745B6 (cs) * 2017-09-07 2019-04-10 Technická univerzita v Liberci Způsob pro výrobu polymerních nanovláken elektrickým nebo elektrostatickým zvlákňováním roztoku nebo taveniny polymeru, zvlákňovací elektroda pro tento způsob, a zařízení pro výrobu polymerních nanovláken osazené alespoň jednou takovou zvlákňovací elektrodou
JP6560734B2 (ja) * 2017-12-25 2019-08-14 エム・テックス株式会社 ナノファイバー製造装置及びナノファイバー製造方法
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CN107614764B (zh) 2022-04-19
CA3000318A1 (en) 2016-09-29
TWI711729B (zh) 2020-12-01
US20210025079A1 (en) 2021-01-28
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SG11201707906QA (en) 2017-10-30
WO2016152999A1 (ja) 2016-09-29
MY187225A (en) 2021-09-13
RU2727941C2 (ru) 2020-07-27
RU2017137356A (ru) 2019-04-26
ES2850075T3 (es) 2021-08-25
SA517390020B1 (ar) 2021-06-19
EP3276051A1 (en) 2018-01-31
AU2021206844A1 (en) 2021-08-12
EP3276051A4 (en) 2018-11-14
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US20180094363A1 (en) 2018-04-05
TWI789643B (zh) 2023-01-11
JP2016183435A (ja) 2016-10-20
TW201702443A (zh) 2017-01-16
US20230416944A1 (en) 2023-12-28
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AU2023233190A1 (en) 2023-10-12
HUE052847T2 (hu) 2021-05-28

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